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Report on Proposals — Copyright, NFPA NFPA 54

Report of the Committee on

National Fuel Gas Code

Mike Gorham, ChairNorthwest Gas Company, MN [U]

Rep. National Propane Gas Association

Paul W. Cabot, Secretary (Nonvoting)American Gas Association, DC

James P. Brewer, Magic Sweep Corporation, VA [IM] Rep. National Chimney Sweep Guild Duane W. Brown, Ranger Insurance Company, TX [I]William H. Bruno, Brunoʼs Enterprises, MO [SE]Thomas E. Buchal,, Intertek Testing Services NA, Inc., NY [RT]Allen J. Callahan, CSA America, Inc., OH [RT]Bob Cave, American Public Gas Association, VA [U]Sharon E. Coates, State of Arkansas, AR [E] Rep. International Fire Marshals AssociationTim Collings, City of Salt Lake City, UT [E] Rep. International Association of Plumbing & Mechanical OfficialsThomas R. Crane, Crane Engineering and Forensic Services, MN [SE]John P. Doucette, Connecticut Department of Public Safety, CT [E]Glen Edgar, Selkirk Metalbestos, Inc., OH [M] Rep. Gas Appliance Manufacturers Association, Inc.Alberto Jose Fossa, MDJ Consultores Associados S/C Ltda, Brasil [SE] Rep. NFPA Latin American SectionRichard L. Gilbert, Railroad Commission of Texas, TX [E]Wilbur L. Haag, Jr., A.O. Smith Water Products Company, SC [M] Rep. Gas Appliance Manufacturers Association Inc.Steen Hagensen, EXHAUSTO, Inc., GA [M]Patricio J. Himes, Sistemas de Energia, Mexico, [U] Rep. Asociacion Mexicana de Distribuidores de GasRussel Iwan, Metropolitan Utilities District, NE [IM] Rep. American Gas AssociationMichael T. Kobel, Intʼl Assn. of Plumbing & Mechanical Officials, CA [E]Brian C. Olson, US Department of the Interior, CO [U]Kenneth P. Padgett, Piedmont Natural Gas Company/ICC, SC [E] Rep. Southern Building Code Congress Intʼl Inc./International Code Council, Inc.Windell F. Peters, AGL Resources Inc., GA [IM] Rep. American Gas AssociationDale L. Powell, Copper Development Association, PA [M]Phillip H. Ribbs, City of San Jose, CA [E] Rep. International Association of Plumbing & Mechanical OfficialsDavid W. Rock, City of Portland, OR [E] Rep. Oregon Mechanical Officials AssociationIssac P. Sargunam, Maytag Corporation, IA [M] Rep. Association of Home Appliance ManufacturersGregory L. Seitz, New Jersey Natural Gas Company, NJ [IM] Rep. American Gas AssociationHall Virgil, Carrier Corporation, IN [M] Rep. Gas Appliance Manufacturers Association Inc.Richard E. White, South Bend, IN [U] Rep. National Association of Plumbing Heating Cooling ContractorsRobert Wozniak, Underwriters Laboratories Inc., NY [RT]

Alternates

Edward Angelone, KeySpan Energy Delivery, NY [IM] (Alt. to Gregory L. Seitz)Paul E. Beach, Emerson Electric Company, OH [M] (Alt. to Wilbur L. Haag)C. John Beck, Pacific Gas and Electric Company, CA [IM] (Alt. to Windell F. Peters) C. Royal Edwards, National Chimney Sweep Guild, FL [IM] (Alt. to James P. Brewer)Jacob H. Hall, Rheem Manufacturing Company, AL [M] (Alt. to Hall Virgil)John M. Halliwill, International Association of Plumbing & Mechanical Officials, CA [E] (Alt. to Michael T. Kobel)Gregory S. Koll, Metropolitan Utilities District, NE [IM] (Alt. to Russel Iwan)Blaine R. Lanning, CSA International, OH [RT] (Alt. to Allen J. Callahan)Stephen L. Pitner, Railroad Commission of Texas, TX [E] (Alt. to W. Richard L. Gilbert)Hari Ramanathan, International Association of Plumbing & Mechanical Officials, CA [E] (Alt. to Phillip H. Ribbs)Bruce J. Swiecicki, National Propane Gas Association, IL [IM] (Alt. to Mike Gorham)John R. Wiggins, Underwriters Laboratories Inc., NC [RT] (Alt. to Robert Wozniak)

Staff Liaison: Theodore C. Lemoff

Committee Scope: This Committee shall have primary responsibility for documents on safety code for gas piping systems on consumers ̓premises and the installation of gas utilization equipment and accessories for use with fuel gases such as natural gas, manufactured gas, liquefied petroleum gas in the vapor phase, liquefied petroleum gas-air mixtures, or mixtures of these gases, including:a. The design, fabrication, installation, testing, operation, and maintenance of gas piping systems from the point of delivery to the connections with each gas utilization device. Piping systems covered by this Code are limited to a maximum operating pressure of 125 psig. For purposes of this Code, the point of delivery is defined as the outlet of the meter set assembly, or the outlet of the service regulator or service shutoff valve where no meter is provided.b. The installation of gas utilization equipment, related accessories, and their ventilation and venting systems.

This list represents the membership at the time the Committee was balloted on the text of this edition. Since that time, changes in the membership may have occurred. A key to classifications is found at the front of this book.

The Report of the Technical Committee on National Fuel Gas Code is presented for adoption.

This Report was prepared by the Technical Committee on National Fuel Gas Code and proposes for adoption, amendments to NFPA 54, National Fuel Gas Code, 2002 edition. NFPA 54 is published in Volume 9 of the 2003 National Fire Codes and in separate pamphlet form.

This Report has been submitted to letter ballot of the Technical Committee on National Fuel Gas Code, which consists of 30 voting members. The results of the balloting, after circulation of any negative votes, can be found in the report.

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Report on Proposals — Copyright, NFPA NFPA 54

_______________________________________________________________54-1 Log# 119 NFG-AAA Final Action: Reject(Entire Document) ________________________________________________________________Submitter : Karin Rountree , Ampco Safety ToolsRecommendation: Anywhere ignition sources are a concern, please include as a requirement: Non-Sparking Tools are required where hazardous, combustible or flammable gases, liquids, dusts, or residues are present. Substantiation: Ordinary hand tools are usually made of steel and if struck, scraped, or dropped, can cause sparks which can be disastrous in an explosive environment. Non-Sparking Tools eliminate this hazard, however, standards regarding their application are incomplete, inconsistent and in some cases inaccurate.We feel prevention is one of the most effective means of ensuring safety. If we can prevent an accident and save someoneʼs life and business, if we can implement standards and codes to educate and inform before an accident happens, then we should make the necessary standards and codes to solve the problem.The standards are recommended practices developed by NFPA are designed to improve overall safety and protection of property and personnel. Implementing a Non-Sparking Tools requirement wherever an ignition source is concern would reduce the risk of fire and explosion where hazardous conditions are present.Non-Sparking Tools are recommended by Safety Engineers and Insurance Companies and meet OSHA and EPA requirements where hazardous, combustible or flammable gases, liquids, dusts and residues are present. Non-Sparking Tools should be used when storing, processing, handling hazardous materials as well as maintenance and repair operations within hazardous environments. All it takes is just one spark to cause an explosion.Committee Meeting Action: Reject Committee Statement: Specific text is not provided as required.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-2 Log# CP133 NFG-AAA Final Action: Accept(Chapters 1, 3 and 4) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 1.1.1.1 This code is a safety code that shall apply to the installation of fuel gas piping systems, appliances , fuel gas utilization equipment, and related accessories as shown in 1.1.1.1(A) through 1.1.1.1(D):(A) Coverage of piping systems shall extend from the point of delivery to the appliance connections with each gas utilization device .(D) Requirements for appliances, gas utilization equipment and related accessories shall include installation, combustion, and ventilation air and venting.1.1.1.2 This code shall not apply to the following items (reference standards for some of which appear in Annex L): (1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system. (2) Installation of farm appliances and equipment such as brooders, dehydrators, dryers, and irrigation equipment. 3.3.5 Air Conditioner, Gas-Fired. A n gas-burning, automatically operated appliance for supplying cooled and/or dehumidified air or chilled liquid.3.3.17* Authority Having Jurisdiction (AHJ). The organization, office or individual responsible for approving appliances , equipment, materials, an installation, or a procedure. 3.3.27 Boiler, Low-Pressure. A self-contained gas-burning appliance for supplying steam or hot water.3.3.43 Clothes Dryer. A n device appliance used to dry wet laundry by means of heat derived from the combustion of fuel gases.3.3.56 Controls. Devices designed to regulate the gas, air, water, or electrical supply to a n gas appliance. These may be manual or automatic.3.3.66 Direct Gas-Fired Industrial Air Heater. A heater in which all of the products of combustion generated by the gas-burning device appliance are released 3.3.70 Draft. A pressure difference that causes gases or air to flow through a chimney, vent, flue, or fuel burning equipment appliance . 3.3.79 Equipment. See Appliance Devices other than appliances .3.3.95 Food Service Equipment Appliance , Gas Counter Appliance. An appliance such as a gas coffee brewer and coffee urn and any appurtenant water heating equipment appliance , food and dish warmer, hot plate, and griddle. 3.3.96 Food Service Equipment Appliance , Gas Deep Fat Fryer. 3.3.97 Food Service Equipment Appliance , Gas-Fired Kettle. 3.3.98 Food Service Equipment Appliance , Gas Oven, Baking and Roasting. 3.3.99 Food Service Equipment Appliance , Gas Range. 3.3.100 Food Service Equipment Appliance , Gas Steam Cooker. A n gas appliance that cooks, defrosts, or reconstitutes food by direct contact with steam.

3.3.101 Food Service Equipment Appliance , Gas Steam Generator. A separate appliance primarily intended to supply steam for use with food service equipment appliances . 3.3.102 Furnace, Central. A self-contained, gas-burning appliance for heating ... 3.3.111 Gas Utilization Equipment. Any device that utilizes gas as a fuel or raw material or both. 3.3.112 Gas Vent. A passageway ... for conveying vent gases from gas appliances or their vent connectors to the outside atmosphere.3.3.113 Gas Vent, Special Type. Gas vents for venting listed Category II, III, and IV gas appliances.3.3.114 Gas Vent, Type B. A vent for venting listed gas appliances with draft hoods and other Category I gas appliances listed for use with Type B gas vents.3.3.115 Gas Vent, Type B-W. A vent for venting listed gas-fired vented wall furnaces.3.3.120 Heat Pump, Gas-Fired. A n gas-burning , automatically operated appliance ...3.3.126 Household Cooking Gas Appliance. A n gas appliance for ...3.3.127 Household Cooking Gas Appliance, Built-In Unit. 3.3.128 Household Cooking Gas Appliance, Broiler. 3.3.130 Industrial Air Heaters, Direct Gas-Fired Non-Recirculating. A heater in which all the products of combustion generated by the gas-burning device appliance are released into the ...”3.3.131 Industrial Air Heaters, Direct Gas-Fired Recirculating. A heater in which all the products of combustion generated by the gas-burning device appliance are released into the ...3.3.135 Kettle, Gas-Fired . See Food Service Equipment, Gas-Fired Kettle3.3.136 Labeled. Appliances , e E quipment, piping, accessories, or materials or vent components to which has been attached a label, symbol or other identifying mark of an organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of production of labeled appliances , equipment, piping, accessories, or materials or vent components and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner. 3.3.138 Leak Check. An operation performed on a complete gas piping system and connected appliances and equipment to verify that the system does not leak. 3.3.140* Listed. Appliances , e E quipment, piping, accessories, materials, vent components or services included in a list published by an organization acceptable to the authority having jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed appliances , equipment, piping, accessories or materials , vent components or periodic evaluation of services, and whose listing states either that the appliances, equipment, piping, accessories, material , vent components or service meets appropriate designated standards or has been tested and found suitable for a specified manner. 3.3.157 Outdoor Cooking Gas Appliance. As used in this code, a post-mounted, fuel-gas burning outdoor cooking appliance for ...3.3.158 Oven, Gas Baking and Roasting. See Food Service Equipment Appliance , Gas Oven 3.3.175 Qualified Agency. Any individual, firm, corporation, or company that either in person or through a representative is engaged in and is responsible for (a) the installation, testing, or replacement of gas piping or (b) the connection, installation, testing, repair, or servicing of appliances and equipment; that is ...3.3.178 Refrigerator (Using Gas Fuel). A n fuel-gas-burning appliance that is designed to extract heat from a suitable chamber.3.3.179 Regulator, Gas Appliance. A pressure regulator for controlling pressure to the appliance manifold of gas equipment . 3.3.180 Regulator, Line Gas. A pressure regulator placed in a gas line between the service regulator and the gas appliance regulator.3.3.182 Regulator, Pressure. A device Equipment placed in a gas line for reducing, controlling, and maintaining the pressure in that portion of the piping system downstream of the device equipment .3.3.188 Room Large in Comparison with Size of Equipment Appliance . ...3.3.196 Sources of Ignition. Devices or Appliances or equipment that, ...3.3.210 Unit Heater, High-Static Pressure. A self-contained, automatically controlled, vented, fuel-gas-burning appliance having ...3.3.215 Valve, Equipment Appliance Shutoff. A valve located in the piping system, used to shut off individual appliance or equipment. 3.3.223 Vent. A passageway used to convey flue gases from gas utilization equipment appliances or their vent connectors to the outside atmosphere.3.3.225 Vent Damper Device, Automatic. A device ... individual automatically operated fuel-gas-burning appliance and that is ...3.3.229 Vent Gases. Products of combustion from fuel-gas-burning appliances plus ...3.3.236* Venting System. A continuous open passageway from the flue collar or draft hood of a n gas-burning appliance to the ...4.1 Qualified Agency. Installation, testing, and replacement of gas piping, gas utilization equipment appliances , or accessories, and ... Substantiation: Editorial, consistent terminology usage. Editorial changes to Chapters 1 through 4. Also see 54-40 (Log #CP138), 54-64 (Log #CP139), 54-86 (Log #CP140), and 54-101 (Log #CP141) for remaining revisions to chapters.

Note: To assist in review and comment, a preprint of NFPA 54 is available and downloadable from the NFPA website at www.nfpa.org. It is also in CD ROM and print versions available from NFPA upon request by calling Customer Service at 1-800-344-3555.

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Report on Proposals — Copyright, NFPA NFPA 54 The National Fuel Gas Code is sometimes inconsistent in the use of such terms as “gas utilization equipment,” “equipment,” “appliance,” “gas-burning devices,” “gas-fired appliances,” etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate “appliances” that consume gas from “equipment” and “systems” used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-3 Log# CP137 NFG-AAA Final Action: Accept(1.1.1.2(20) (New) ) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 1.1.1.2(20) Construction of appliances. Substantiation: Revise the scope to clarify that the requirements of the code do not apply to the internal components of appliances. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-4 Log# 36 NFG-AAA Final Action: Reject(1.4) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 1.4 Equivalency. The provisions of this code are not intended to prevent the use of any material, method of construction, or installation procedure not specifically prescribed prohibited by this code, provided any such alternate is acceptable to the authority having jurisdiction [see 3.3.17]. The authority having jurisdiction shall require that sufficient evidence be submitted to substantiate any claims made regarding the safety of such alternates.Substantiation: This surely is what is intended by this section. It is tempting to use “proscribed” here but that will invite the same mistake in another edition.Committee Meeting Action: Reject Committee Statement: The current wording is correct since the code intent is to permit the use of materials and equipment that the code does not prescribe. To make a change could cause confusion where the committee is not aware any exists.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-5 Log# 37 NFG-AAA Final Action: Reject(3.3.4) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.4 Air, Circulating. Air for cooling, heating, or ventilation distributed to habitable spaces . See Circulating Air. Substantiation: To better position the definition.Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on 54-6 (Log #44). The committee will review the style of the definitions, and may make style changes.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-6 Log# 44 NFG-AAA Final Action: Accept in Principle in Part(3.3.4) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.4 Air, Circulating. Air for cooling, heating, or ventila-tion distributed to habitable spaces. 3.3.43 Circulating Air. The air that flows through a heating (or cooling) unit and then into the space to be heated (or cooled). Substantiation: To put the term “circulating air” in a more logical place, and improve the definition.Committee Meeting Action: Accept in Principle in Part The definition will not be changed. The definition will be reorganized to eliminate commas and reordered and provide headings as appropriate. Committee Statement: The committee believes that the current definition is adequate.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-7 Log# 38 NFG-AAA Final Action: Reject(3.3.7) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.7 Air Shutter. An adjustable device for varying the size of the primary air inlet(s) . An air damper used to control the size of air intake or exhaust openings. Substantiation: The current definition is too narrow, the use of “primary air inlet” suggests a burner application only, and “adjustable” suggests a manual, preset application.Committee Meeting Action: Reject Committee Statement: This term is used only in Annex H. The definition is appropriate for the use in Annex H.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-8 Log# 39 NFG-AAA Final Action: Reject(3.3.11) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.11 Appliance Categorized Vent Diameter/Area. The minimum vent diameter/ area/ diameter permissible required for a Category I appliances appliance to maintain a nonpositive vent static pressure when tested in accordance with nationally recognized standards. Substantiation: To make “diameter/area” conform to the order of these words in the title, and to improve the wording of the definition.Secretary Note: Suggested correction of “diameter/area” applies to NFPA version. Committee Meeting Action: Reject Committee Statement: The proposal would be a significant change which is not substantiated.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-9 Log# 40 NFG-AAA Final Action: Accept(3.3.16) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.16 Atmospheric Pressure. The pressure of the weight of air and water vapor on the surface of the earth, approximately 14.7 pounds/square inch (psia) (101 kPa absolute) at sea level. Substantiation: This is redundant -- water vapor is a component of air.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-10 Log# 41 NFG-AAA Final Action: Accept in Principle(3.3.25) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.25 Boiler, Hot Water Heating , Low Pressure . A boiler in which no steam is generated, from which hot water is circulated for heating purposes and then returned to the boiler, and that operates at water pressures not exceeding 160 psi (1100 kPa) and at water temperatures not exceeding 250°F (121°C) at or near the boiler outlet. Substantiation: The definition is for a low pressure hot water heating boiler, and the title should say so.Committee Meeting Action: Accept in Principle Committee Statement: Refer to Committee Action on 54-11 (Log #33).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-11 Log# 33 NFG-AAA Final Action: Accept in Principle(3.3.25, 3.3.26, 3.3.27, 3.3.28) ________________________________________________________________Submitter : Wilbur L. Haag, Jr. , A.O. Smith Water Products CompanyRecommendation: 3.3.25 Boiler, Hot Water Heating Boiler . A boiler in which no steam is generated, from which hot water is circulated for heating purposes and then returned to the boiler, and that operates at water pressures not exceeding 160 psi (1100 kPa) and at water temperatures not exceeding 250°F (121°C) at or near the boiler outlet designed to heat water for circulation through an external space heating system .3.3.26 Boiler, Hot Water Supply. A boiler , completely filled with water, which furnishes hot water to be used externally to itself, and that operates at water pressures not exceeding 160 psi (1100 kPa) and at water temperatures not exceeding 250°F (121°C) at or near the boiler outlet used to heat water for

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Report on Proposals — Copyright, NFPA NFPA 54 purposes other than space heating. 3.3.27 Boiler, Low-Pressure. A self-contained gas-burning appliance for supplying steam or hot water Steam Heating. A boiler designed to convert water into steam which is supplied to an external space heating system. 3.3.28 Boiler, Steam Heating. A boiler in which steam is generated and that operates at a steam pressure not exceeding 15 psi (100 kPa) Low-Pressure. A boiler that supplies steam at a pressure not exceeding 15 psi (100 kPa), or hot water at a pressure not exceeding 160 psi (1100 kPa) at a temperature not exceeding 250 o F (121 o C). Substantiation: There is no explanation of what low pressure means in the present definition for Boiler, Low-Pressure. This proposal corrects that by using language for the four definitions exactly as in the Z21.13/CSA 4.9 Standard.Committee Meeting Action: Accept in Principle 1. Accept the proposed definitions of Hot Water Heating Boiler, Hot Water Supply Boiler, and Low Pressure Boiler2. Revise the definition of Steam Boiler to read:Steam Boiler. A boiler designed to convert water into steam which is supplied to an external system.Committee Statement: The proposed definitions are accepted, and the definition of Boiler is modified by changing the term to “Steam Boiler” and deleting of the word “space” which could be interpreted to limit its use.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-12 Log# 42 NFG-AAA Final Action: Accept in Principle(3.3.27) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.27 Boiler, Low-Pressure. A self-contained gas-burning appliance for supplying steam or hot water. Substantiation: The purpose of this definition is accomplished by “fixing” 3.3.25 and 3.3.28. In addition, the definition, as stated, is incorrect.Committee Meeting Action: Accept in Principle Committee Statement: Refer to Committee Action on 54-11 (Log #33).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-13 Log# 43 NFG-AAA Final Action: Accept in Principle(3.3.28) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.28 Boiler, Steam Heating , Low Pressure . A boiler in which steam is generated and that operates at a steam pressure not exceeding 15 psi (100 kPa). Substantiation: To make the title consistent with the definition.Committee Meeting Action: Accept in Principle Committee Statement: Refer to Committee Action on 54-11 (Log #33). Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-14 Log# CP125 NFG-AAA Final Action: Accept(3.3.39, various other sections) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 3.3.39 Chimney. [See also Gas Vent, Vent, and Venting System.] One or more passageways, vertical or nearly so, for conveying flue or vent gases to the outside atmosphere outdoors .3.3.66 Direct Gas-Fired Industrial Air Heater. A heater in which all of the products of combustion generated by the gas-burning device are released into the air stream being heated; whose purpose is to offset the building heat loss by heating incoming outside outdoor air, inside air or a combination of both.3.3.67 Direct Gas-Fired Make-Up Air Heater. A heater in which all the products of combustion generated by the fuel-gas burning device are released into the outside outdoor air stream being heated.3.3.68 Direct Vent Appliances. Appliances that are constructed and installed so that all air for combustion is derived directly from the outside atmosphere outdoors and all flue gases are discharged to the outside atmosphere outdoors .3.3.92 Flue, Chimney. The passage(s) in a chimney for conveying the flue or vent gases to the outside atmosphere outdoors .3.3.103 Furnace, Enclosed. A specific heating, or heating and ventilating, furnace incorporating an integral total enclosure and using only outside outdoor air for combustion.3.3.112 Gas Vent. A passageway composed of listed factory-built components assembled in accordance with the terms of listing for conveying vent gases from gas appliances or their vent connectors to the outside atmosphere outdoors .3.3.223 Vent. A passageway used to convey flue gases from gas utilization equipment or their vent connectors to the outside atmosphere outdoors .3.3.236* Venting System. A continuous open passageway from the flue collar

or draft hood of a gas-burning appliance to the outside atmosphere outdoors for the purpose of removing flue or vent gases.5.6.4 Plastic Pipe, Tubing, and Fittings. Plastic pipe, tubing, and fittings shall be used outside outdoors underground only and shall conform with ASTM D 2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings. Pipe to be used shall be marked “gas” and “ASTM D 2513.”5.6.9 Plastic Piping, Joints, and Fittings.5.8.5.1.1 An independent vent to the outside exterior of the building, sized in accordance with the regulator manufacturerʼs instructions, shall be provided where the location of a regulator is such that a ruptured diaphragm will cause a hazard. Where there is more than one regulator at a location, each regulator shall have a separate vent to the outside outdoors , or if approved …5.9.7 Vents. The discharge stacks, vents, or outlet parts of all pressure relieving and pressure limiting devices shall be located so that gas is safely discharged in to the outside atmosphere outdoors . …6.1.6 Piping Underground Beneath Buildings. …. The conduit shall extend at least 4 in. (100 mm) outside the building, be vented outdoors above grade to the outside , and be installed so as to prevent the entrance of water and insects. 6.1.7.1 Connection of Plastic Piping. Plastic pipe shall be installed outside outdoors , underground only.6.1.7.2 Connections between Metallic and Plastic Pipe. Connections made outside outdoor and underground between metallic and plastic piping shall be made only with ASTM D 2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, Category I transition fittings.6.2.1 … Where passing through an outside exterior wall, the piping shall also be protected against corrosion by coating or wrapping with an inert material approved for such applications. …8.1.11.2 Repair Garages. ... Air for combustion purposes shall be obtained from outside the outdoors building . …8.1.20 Bleed Lines for Diaphragm-Type Valves. Bleed lines shall comply with the following requirements: (1) Diaphragm-type valves shall be equipped to convey bleed gas to the outside atmosphere outdoors or into the combustion chamber adjacent to a continuous pilot.9.4.2 Exhausting to the Outdoors. Type 1 and Type 2 clothes dryers shall be exhausted to the outside air outdoors . 9.8.5 Air Supply. … Where outside outdoor air dampers or closing louvers are used, they shall be verified to be in the open position prior to main burner operation.9.9.5 Air Supply. … Where outside outdoor air dampers or closing louvers are used, they shall be verified to be in the open position prior to main burner operation.9.27.1.4 Direct-vent wall furnaces shall be installed with the vent-air intake terminal in the outside atmosphere outdoors . …10.2.2 Equipment Not Required to be Vented. Where any or all of this equipment in 10.2.2 (5) through (11) is installed so the aggregate input rating exceeds 20 Btu/hr/ft3 (207 W/m3) of room or space in which it is installed, one or more shall be provided with venting systems or other approved means for removing conveying the vent gases to the outside atmosphere outdoors so the aggregate input rating of the remaining unvented equipment does not exceed the 20 Btu/hr/ft3 (207 W/m3). …10.3.1 Minimum Safe Performance. A venting system shall be designed and constructed so as to develop a positive flow adequate to remove convey flue or vent gases to the outside atmosphere outdoors .Substantiation: Editorial, consistent terminology. Replace the word “outside” as it relates to air from the outdoors or outdoor atmosphere with the preferred term “outdoor.” Also replace “remove” with “convey” and “outside wall” with ʻexterior wall.”Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-15 Log# CP131 NFG-AAA Final Action: Accept(3.3.44 Clothes Dryer Type 1, 3.3.45 Clothes Dryer Type 2) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:3.3.44 Clothes Dryer, Type 1. Factory-built package, multiply produced. Primarily used in family living environment. May or may not be coin-operated for public use.3.3.45 Clothes Dryer, Type 2. Factory-built package, multiply produced. Used in business with direct intercourse of the function with the public. May or may not be operated by public or hired attendant. May or may not be coin-operated.Substantiation: To clarify the definitions.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-16 Log# 45 NFG-AAA Final Action: Accept in Principle(3.3.66) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors

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Report on Proposals — Copyright, NFPA NFPA 54 Recommendation: 3.3.66 Direct Gas-Fired Industrial Air Heater. A heater in which all of the products of combustion generated by the gas-burning device are released into the air stream being heated ; whose purpose is to offset the building heat loss by heating incoming outside air, inside air or a combination of both . Substantiation: The struck out material is not a definition -- it is an explanation!Committee Meeting Action: Accept in Principle 3.3.66 Direct Gas-Fired Industrial Air Heater , Recirculating. A n air recirculating heater in which all of the products of combustion generated by the gas-burning device are released into the air stream being heated. Committee Statement: The revised definition is accepted with an editorial revision.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-17 Log# 46 NFG-AAA Final Action: Accept in Principle(3.3.67) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.67 Direct Gas-Fired Make-Up Air Heater. A heater in which all the products of combustion generated by the fuel-gas burning device are released into the flow of air that is passing through the heater outside air stream being heated . Substantiation: The proposed change is more readily understandable.Committee Meeting Action: Accept in Principle 3.3.67 Direct Gas-Fired Non-Recirculating Industrial Air Heater. A non-recirculating industrial air heater in which all the products of combustion generated by the fuel-gas burning device are released into the air stream being heated.Committee Statement: The proposed definition is accepted with an editorial revision, and the title is changed to match the revised title of the standard to which these products are listed.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-18 Log# 47 NFG-AAA Final Action: Reject(3.3.72) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.72 Draft, Natural. Draft produced by the difference in the weight of a column of flue gases within a chimney or vent and a corresponding column of air of equal dimension outside the chimney or vent. [211:1-5.2.31.2] See Natural Draft.3.3.151 Natural Draft. A negative pressure in a chimney or vent that results from difference in density of the gases in the chimney or vent and the air in the ambient atmosphere, or from venturi effects of the wind blowing across the top of the chimney or vent. Substantiation: More likely place to search for the definition of “Natural Draft.” To provide an improved definition of a term presently found in 3.3.72.Committee Meeting Action: Reject Committee Statement: The proposed definition does not significantly improve the definition, and the committee notes that the current definition is extracted from NFPA 211.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-19 Log# 48 NFG-AAA Final Action: Reject(3.3.74) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.74 Draft Regulator. A device that functions to maintain a desired draft in at or near the appliance outlet by automatically varying the amount of dilution air entering the vent reducing to reduce excessive draft the draft to the desired value. Substantiation: This change makes clear that the regulator regulates excessive draft only, and the method is by “short-circuiting” the excess draft near the appliance outlet with additional dilution air. Committee Meeting Action: Reject Committee Statement: The change would make the definition unnecessarily restrictive.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-20 Log# 49 NFG-AAA Final Action: Accept(3.3.78) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep.

National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.78 Effective Ground-Fault Current Path. An intentionally constructed, permanent, low impedance electrically conductive path designed and intended to carry underground electric fault current conditions from the point of a ground fault on a wiring system to the electrical supply source. Substantiation: Change uses proper electrical terms. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: SWIECICKI: I agree with Mr. Wozniakʼs proposed revision.VIRGIL: I agree with Robert Wozniakʼs reason for voting negative.WOZNIAK: The original definition was much like that which appeared in the National Electrical Code (NEC), but due to a typographical error, the wording was altered. Also, one word was missing, which made the error appear to be grammatically correct. The definition should read, “Effective Ground-Fault Current Path”. An intentionally constructed, permanent, low impedance electrically conductive path designed and intended to carry current underground under ground- fault conditions from the point of a ground fault on a wiring system to the electrical supply source. This revision is now identical to the definition of paragraph 250.2 in the 2002 edition of the NEC.Comment on Affirmative WHITE: The definition should be identical with the NEC provision 250.2. However, his printed version deletes “underground” which I am sure he does not mean. The present reading in our book is “underground”, as in below the surface of the earth. In my zeal, I deleted the “underground”, but I did not check the NEC like I should have.

_______________________________________________________________54-21 Log# 50 NFG-AAA Final Action: Reject(3.3.84) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.84 FAN Max. The maximum capacity in Btu/Hour of a vent or connector serving i nput rating of a Category I, fan-assisted appliance attached to a vent or connector . Substantiation: The rating is the vent rating, not the appliance rating.Committee Meeting Action: Reject Committee Statement: The term FAN Max is correctly defined, as used in the venting tables.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-22 Log# 51 NFG-AAA Final Action: Reject(3.3.85) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.85 FAN Min. The minimum input in Btu/hour rating of a Category I, fan-assisted appliance attached to a vent or connector for satisfactory operation of the vent or connector . Substantiation: The rating is for satisfactory operation of the vent.Committee Meeting Action: Reject Committee Statement: The term FAN Min is correctly defined, as used in the venting tables.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-23 Log# 52 NFG-AAA Final Action: Reject(3.3.86) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.86 FAN+FAN. The maximum combined appliance input rating of capacity in Btu/Hour of a vent or connector serving two or more Category I, fan-assisted appliances attached to the common vent . Substantiation: The rating is the vent rating, not the appliance rating.Committee Meeting Action: Reject Committee Statement: The term FAN + FAN is correctly defined, as used in the venting tables.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-24 Log# 53 NFG-AAA Final Action: Reject(3.3.87) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors

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Report on Proposals — Copyright, NFPA NFPA 54 Recommendation: 3.3.87 FAN+NAT. The maximum combined appliance input rating of capacity in Btu/Hour of a vent or connector serving one or more Category I, fan-assisted appliances and one or more Category I, draft hood-equipped appliances attached to the common vent . Substantiation: The rating is the vent rating, not the appliance rating.Committee Meeting Action: Reject Committee Statement: The term FAN + NAT is correctly defined, as used in the venting tables.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-25 Log# 55 NFG-AAA Final Action: Reject(3.3.129) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.129 Hybrid Pressure System. A piping system in which the pressure at the point of delivery is reduced by one or more line pressure regulators prior to the appliance connec-tion. Substantiation: Delete this unless staff has found that we use it somewhere!(?)Committee Meeting Action: Reject Committee Statement: The term is used in 12.1.3 and the definition.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-26 Log# CP112 NFG-AAA Final Action: Accept(3.3.130, 3.3.131) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete 3.3.130 and 3.3.131. Substantiation: Duplicate definitions are deleted, see 3.3.66 and 3.3.67Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-27 Log# 54 NFG-AAA Final Action: Accept in Principle(3.3.131) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.131 Industrial Air Heaters, Direct Gas-Fired Recirculating. A heater in which all the products of combustion generated by the gas-burning device are released into the air stream being heated to compensate for building heat loss by heating incoming outdoor air, and, if applicable, inside air. See 3.3.66 Substantiation: To avoid defining the same thing in two places.Committee Meeting Action: Accept in Principle Committee Statement: The definition is deleted in 54-26 (Log #CP112).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-28 Log# 56 NFG-AAA Final Action: Accept(3.3.134) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.134 Joint. A connection between two lengths of pipe or between a length of pipe and a fitting. Substantiation: The definition given is not different from the dictionary meaning of the word “joint.”Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-29 Log# 57 NFG-AAA Final Action: Accept(3.3.145) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.145 Mechanical Exhaust System. Equipment installed in and made a part of the vent, which will provide a positive induced draft assure a satisfactory flow of gases through the vent. Substantiation: “A positive induced draft” is an oxymoron.Committee Meeting Action: Accept Revise 3.3.145 to read: 3.3.145 Mechanical Exhaust System. Equipment installed in and made a part of the vent, to provide the required flow of gases through the vent.Committee Statement: Accepted with an editorial revision.Number Eligible to Vote: 30

Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-30 Log# 58 NFG-AAA Final Action: Accept in Principle(3.3.152) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.152 Nondisplaceable Valve Member. A nondisplaceable valve member that cannot be moved from its seat by a force applied to the handle, or force applied by a plane surface to any exterior portion of the valve. Substantiation: Circular definition as presently shown.Committee Meeting Action: Accept in Principle 3.3.152 Nondisplaceable Valve Member. A nondisplaceable valve member that cannot be moved from its seat by a force applied to the handle, or force applied by a plane surface to any exterior portion of the valve. Committee Statement: Accepted and unneeded text is also deleted.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-31 Log# 59 NFG-AAA Final Action: Reject(3.3.157) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.157 Outdoor Cooking Gas Appliance. As used in this code, a post-mounted, fuel-gas burning outdoor cooking appliance for installation directly on and attachment attached to a post provided as a part of the appliance by the manufacturer. Substantiation: As presently offered, it is not quite the correct word.Committee Meeting Action: Reject Committee Statement: The definition is revised in 54-32 (Log #CP114).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-32 Log# CP114 NFG-AAA Final Action: Accept(3.3.157) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise 3.3.157 to read:3.3.157 Outdoor Cooking Gas Appliance. As used in this code, a post-mounted, fuel-gas burning outdoor cooking appliance for installation directly on and attachment to a post provided as a part of the appliance by the manufacturer. A gas-fired cooking appliance for outdoor use only that is provided with a means of support by the manufacturer and is connected to a fixed gas piping system. Substantiation: The definition is revised to reflect outdoor cooking products currently available.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-33 Log# 60 NFG-AAA Final Action: Accept in Principle(3.3.165) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.165 Piping. As used in this code, either pipe, tubing, or both. See Pipe, Tubing 3.3.205 Tubing. Substantiation: There is no entry for “Pipe, Tubing”Committee Meeting Action: Accept in Principle 3.3.165 Piping. As used in this code, either pipe, tubing, or both. See Pipe, Tubing 3.3.163 Pipe, 3.3.205 Tubing. Committee Statement: The definition section numbers are added to clarify.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-34 Log# 61 NFG-AAA Final Action: Reject(3.3.170) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.170 Pressure Drop. The loss in pressure of a fluid flowing in a piping system due to friction or obstruction in pipes, valves, fittings, regulators, and burners t he piping system . Substantiation: Pressure drop requires that the fluid be flowing. Also, “piping system” encompasses all the specified items. Committee Meeting Action: Reject Committee Statement: The definition is clear.Number Eligible to Vote: 30Ballot Results: Affirmative: 25

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Report on Proposals — Copyright, NFPA NFPA 54 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-35 Log# 62 NFG-AAA Final Action: Reject(3.3.174) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.174 Purge. To free a gas conduit of air or gas, or a mixture of gas and air replace the contents of a gas conduit by the vigorous introduction of an appropriate replacement fluid . Substantiation: To establish the concept that purging must be rapid or vigorous, and to avoid the idea that purging is only to replace fuel gas -- it may also be required to replace air in a piping system. Committee Meeting Action: Reject Committee Statement: The proposed changes are not needed. The proposed language adds terms that are too subjective. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-36 Log# CP127 NFG-AAA Final Action: Accept(3.3.205) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 3.3.205 Tubing. Semirigid conduit of copper, steel, aluminum, CSST or plastic. Substantiation: The clarify that CSST is included under the definition for tubing.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-37 Log# 63 NFG-AAA Final Action: Accept(3.3.238) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 3.3.238 Venting System, Mechanical Draft, Forced. A venting system in which a fan or other mechanical device issued is used to cause the flow of flue or vent gases under positive static vent pressure. Substantiation: To remove an oxymoron, viz., static pressure in a flowing gas. Committee Meeting Action: Accept Committee Statement: Inclusion of the word “static” can cause confusion. Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: SWIECICKI: I agree with Mr. Virgilʼs reasons.VIRGIL: I vote negative because “static” should not be deleted from the definition,“3.3.238 Venting System, Mechanical Draft, Forced. A venting system in which a fan or other mechanical device is used to cause the flow of flue or vent gases under positive static vent pressure.”The fact that the pressure is “static pressure” is fundamental to the definition in the same way it is used in the definitions for Vented Appliance, Category III and IV; i.e.“3.3.232 Vented Appliance, Category III. An appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.ʼ“3.3.233 Vented Appliance, Category IV. An appliance that operates with a positive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent.”Static pressure is the driving force that causes the flow of flue or vent gases in a forced mechanical draft venting system, just as it causes the flow of air in circulating air ducts.Static pressure is measured at the peripheral holes in a pitot-static tube. See the PRESSURE MEASUREMENT and PITOT-STATIC TUBES sections in the Measurement and Instruments chapter of the ASHRAE Fundamentals Handbook.The word “static” avoids confusion, rather than causes confusion in this definition in the NFGC.WHITE: I agree to leave the word “static” in the definition, but it still cries out for some sort of improvement!

_______________________________________________________________54-38 Log# 106 NFG-AAA Final Action: Reject(4 (New) ) ________________________________________________________________NOTE: This Proposal appeared as Comment 54-40 (Log # 71) which was held from the A2002 ROC on Proposal 54 -New . Submitter : Gordon (Don) Rogers , Con EdisonRecommendation: Add new text to read as follows: X.X.X Notice to Users. When disconnecting existing piping, proper personal

protective equipment and appropriate training is required to protect against injury and environmental mishaps. This can include, but is not limited to: PCBs in oily substances, asbestos in gaskets, elemental mercury in vent lines and some types of pressure reducing regulators or meters. Substantiation: Environmental issues are not addressed in the Code. For a national code to completely disregard environmental issues that contractors, utilities, and homeowners encounter is unethical, maybe criminal. The Code should not set environmental policy, but it should at least warn or bring it to the userʼs attention.Committee Meeting Action: Reject Committee Statement: Requirements of the type proposed are not appropriate for this Code. They are covered elsewhere, i.e., OSHA.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-39 Log# 64 NFG-AAA Final Action: Reject(4.4 (New) ) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 4.4 Operational Test of Completed Systems. When gas supply is available at the time of substantial completion of the work, the installing agency shall conduct an operational test of the complete system to be sure that the firing rates of appliances are correct, that the devices are venting properly, and that there is no undue vent products spillage. Substantiation: This proposal springs from a consulting inquiry that came to me. A contractor installed gas piping and some appliances in a residence in a rural location where natural gas was not available. Besides the appliances he installed, he also piped up other products that were supplied by the general contractor or the owner. The contractor also relocated some appliances from the ownerʼs original home and converted them to use LPG! Some of the new units were set up for natural gas and plainly labeled as such, but they were not modified for LPG. After a short time of using these devices, various parts of the new house were significantly sooted and the contractor refused to cover the damages! Eventually, the contractor was made to see the light, but only after legal fees (and my minor fee). It seems to me that the concept in this proposal should be in the code -- how it is said and where located, I leave to the panels and total committee. Committee Meeting Action: Reject Committee Statement: The committee agrees that the subject is important, and notes that this subject is covered elsewhere in the Code, i.e., Chapter 11. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-40 Log# CP138 NFG-AAA Final Action: Accept(Chapters 5, 6 and 7) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 5.1.2 Addition to Existing System. When additional gas utilization equipment is appliances are being connected to a gas piping system, the ...5.3.2 Interconnections for Stand-By Fuels. Where a supplementary gas for stand-by use is connected downstream from a meter or a service regulator where a meter is not provided, a device equipment to prevent backflow shall be installed. 5.4.2.1 The volume of ... from the manufacturers ̓input ratings of the gas utilization equipment appliances served. Where the input rating is not indicated, the gas supplier, equipment appliance manufacturer, or a qualified agency ...5.4.2.2 The total connected hourly load shall be used as the basis for piping sizing, assuming all appliances are equipment is operating at full capacity simultaneously. 5.4.4 Allowable Pressure Drop. The design pressure loss ...of the appliance gas utilization equipment , shall be such that the supply pressure at the appliance equipment is greater than the minimum pressure required for proper appliance equipment operation.5.4.1* General Considerations. Gas piping systems shall ... the point of delivery and the appliance gas utilization equipment .5.5.1 (3)(d) Boiler or mechanical equipment rooms. 5.8.1 Where Required. A line gas pressure regulator ... the branch supply line or gas utilization equipment is appliances are designed to ...5.8.5.1.4 A regulator shall not be vented to the gas equipment appliance flue or exhaust system.5.8.5.2 Gas Appliance Pressure Regulators. 5.10.1 Where to Install. Protective devices shall be installed as close to the utilization equipment as practical where the design of utilization equipment connected is ...5.11 Low-Pressure Protection. A protective device shall be installed between the meter and the gas utilization equipment appliance if the operation of the equipment appliance is such ...5.13.1 Design. Piping systems shall be ... at points of connections to appliances and equipment and at anchorage or guide points. 6.2.6.1 Piping shall be anchored to prevent undue strains on connected

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Report on Proposals — Copyright, NFPA NFPA 54 appliances and equipment and shall not be supported by other piping. 6.2.6.3 All parts of the supporting equipment system shall be designed and installed so they will not be disengaged by movement of the supported piping.6.5.1 (1) Bends shall be made only with bending equipment tools and procedures intended for that purpose.6.5.2 (4) Where the piping manufacturer specifies the use of special bending equipment tools or procedures, such equipment tools or procedures shall be used.6.7.2.1 Each outlet, including a valve shall be closed gastight with a threaded plug or cap immediately after installation and shall be left closed until the gas utilization appliance or equipment is connected thereto. When an appliance or equipment is disconnected ...Exception No. 1: Laboratory equipment appliances installed in accordance with 8.5.2(1) shall be permitted.6.7.2.2 Appliance Equipment shutoff valves installed ...6.9.2.2 Shutoff Valves for Multiple House Lines. In multiple tenant buildings ... accessible from the appliance or equipment location, an ...6.13.1 Gas piping shall ... connected to gas utilization equipment appliances that is are connected to the equipment appliance grounding ... that equipment appliance . 7.1.3.4 Where the piping system is connected to appliances , or equipment, or equipment components designed for operating pressures of less than the test pressure, such appliances , or equipment or equipment components shall be isolated from the piping system by disconnecting them and capping the outlet(s).7.1.3.5 Where the piping system is connected to appliances , or equipment, or equipment components designed for operating pressures equal to or greater than the test pressure, such appliances and or equipment shall be isolated from the piping system by closing the individual equipment appliance shutoff valve(s).7.2 Piping System , Appliance and Equipment Leakage Test. 7.2.4 Placing Appliances and Equipment in Operation. Gas utilization Appliances and equipment shall not be placed in operation ...7.3.4 Placing Appliances and Equipment in Operation. After the piping system has been placed in operation, all appliances and equipment ... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 5 through 7. Also see 54-2 (Log #CP133), 54-64 (Log #CP139), 54-86 (Log #CP140), and 54-101 (Log #CP141) for remaining revisions to chapters.The National Fuel Gas Code is sometimes inconsistent in the use of such terms as “gas utilization equipment,” “equipment,” “appliance,” “gas-burning devices,” “gas-fired appliances,” etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate “appliances” that consume gas from “equipment” and “systems” used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-41 Log# 109 NFG-AAA Final Action: Reject(5.5.1(4)) ________________________________________________________________NOTE: This Proposal appeared as Comment 54-74 (Log # 124 ) which was held from the A2002 ROC on Proposal 54 -181. Submitter : Hall Virgil , Carrier Corporation / Rep. Gas Appliance Manufacturers AssociationRecommendation: Add new text to read as follows:(4) CSST where installed in accordance with the manufacturerʼs instructions. Installer shall extend rigid metallic pipe 2 inches minimum outside an appliance casing to connect to CSST to prevent chafing of CSST on an edge of the gas connector opening in an appliance casing and to prevent exposure to high temperatures. Substantiation: CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions . Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on 54-75a (Log #CP115).Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Abstain: 1Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Abstention: VIRGIL: I vote abstain because this proposal section number is incorrectly identified because it was held from the A2002 ROC before the sections were renumbered. It should be identified as Section 8.5.1(4).Proposal 54-75a (Log #CP115) (8.5.1(4)) implements this proposal.

_______________________________________________________________54-42 Log# CP132 NFG-AAA Final Action: Accept(5.6.3.4, 6.2.8) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:5.6.3.4 Corrugated Stainless Steel. Corrugated stainless steel tubing shall be tested and listed in compliance accordance with the construction, installation, and performance requirements of ANSI LC 1/CSA 6.26, Fuel Gas Piping Systems Using Corrugated Stainless Steel Tubing. 6.2.8 CSST. CSST piping systems shall be installed in accordance with this code and the manufacturerʼs installation instructions. Substantiation: This code does not contain a requirement that CSST piping be installed in accordance with the manufacturerʼs instructions. Hardened listed nail plates, terminations at portable appliances, detailed sleeve requirements through the sides of fireplaces and fireplace inserts, as well as methods for installation of CSST underground are important requirements found only in the manufacturerʼs installation instructions. Changes to section 5.6.3.4 are made to eliminate the references to installation instructions since chapter 5 is the material chapter.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because the proposal for the new Section 6.2.8, should not be added unless it includes the same statements that are being added to 8.5.1(4) by Proposal 54-75a (Log #CP115) (8.5.1(4)) and for the same substantiation.Existing proposal:“5.5.3.4 Corrugated Stainless Steel. Corrugated stainless steel tubing shall be tested and listed in compliance accordance with the construction, installation, and performance requirements of ANSI LC 1/CSA 6.26, Fuel Gas Piping Systems Using Corrugated Stainless Steel Tubing.”“6.2.8 CSST. CSST piping systems shall be installed in accordance with this code and the manufacturerʼs installation instructions.” Add the following text to 6.2.8:“ CSST shall not pass through an appliance housing, cabinet, or casing. CSST shall connect only to appliances that are fixed in place.”

_______________________________________________________________54-43 Log# 81 NFG-AAA Final Action: Accept in Principle(5.6.4) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: 5.6.4 Plastic Pipe, Tubing, and Fittings. Plastic pipe, tubing, and fittings supplying gas shall be used outside underground only and shall conform with ASTM D 2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings. Pipe to be used shall be marked “gas” and “ASTM D 2513.” PVC pipe, tubing and fittings used to vent regulators shall conform to UL 651, Schedule 40 and 80 Rigid PVC Conduit. Substantiation: Section 5.8.5.1.1 requires vent materials used in regulator vent lines to be in accordance with section 5.6. Section 5.6 restrict plastic piping to outdoor, underground usage only. However, while the code appears clear-cut on this issue, it may have been an unintended consequence of a code change several editions back to provide guidance on acceptable vent materials when the code did not have any such requirements. We believe the committee failed to take into account the use of PVC vent lines that do not convey line pressure gas. The revision would allow the use of PVC indoors and outdoors above ground if it meets UL 651. Several utilities continue to use UL 651 PVC for vent line on utility owned regulators that are allowed under DOT regulations. NFPA 58, Liquefied Petroleum Gas Code, also allows it use. Committee Meeting Action: Accept in Principle Revise 5.6.4 to read: 5.6.4 Plastic Pipe, Tubing, and Fittings. 5.6.4.1 Plastic pipe, tubing, and fittings used to supply fuel gas shall be used outside underground only and shall conform with to ASTM D 2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings. Pipe to be used shall be marked “gas” and “ASTM D 2513.”5.4.6.2 Regulator vent piping. Plastic pipe, tubing, and fittings used to connect regulator vents to remote vent terminations shall be PVC conforming to UL 651, Schedule 40 and Schedule 80 rigid PVC conduit. Committee Statement: Accepted with editorial revisions.Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Negative: 2 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: KOBEL: ASTM D 2513 is the product standard for the acceptance of plastic fuel gas piping, it is for outside use and underground. The substantiation for the use of UL 651 indicates that a utility acceptance outside the building should allow for its usage in the building. DOT utility rules do not cover usage of these materials in a building.RIBBS: ASTM D 2513 is the product standard for the acceptance of plastic fuel gas piping, it is for outside use and underground. The substantiation for the

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Report on Proposals — Copyright, NFPA NFPA 54 use of UL 651 indicates that a utility acceptance outside the building should allow for its usage in the building. DOT utility rules do not cover usage of these materials in a building.

_______________________________________________________________54-44 Log# 65 NFG-AAA Final Action: Accept(5.6.4.1(2)) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 5.6.4.1 Anodeless Risers. Anodeless risers shall comply with the following:(2) Service head adapters and field-assembled anodeless risers incorporating service head adapters shall be recommended by the manufacturer for the gas used by the manufacturer and shall be design-certified to meet the requirements of Category I of ASTM D 2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, and 49 CFR 192.281(e). The manufacturer shall provide the user qualified installation instructions as prescribed by 49 CFR 192.283(b).Substantiation: To eliminate repetition.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-45 Log# 17 NFG-AAA Final Action: Reject(5.6.7 , Welder, Approved (New), 5.6.7.4 (New)) ________________________________________________________________Submitter : James M. Harper , City of Hastings, Nebraska / Rep. Nebraskaland Conference of Building OfficialsRecommendation: 5.6.7 Metallic Pipe Threads and welds . 5.6.7.4 Welds. Welding of joints in a gas supply system shall comply with AWS B2.1 or API 1104 or ASME Boiler and Pressure Vessel Code, Section IX. Welds shall be done by an approved welder. Welder, Approved. An approved welder is a person who can demonstrate experience in the type of work being performed, satisfactory to the code official, and has a certificate or similar document from an approved agency or institution that demonstrates the personʼs ability to meet the requirements of Section IX of the ASME Boiler and Pressure Vessel Code, relating to welder qualifications. Add reference into Chapter 14ASME Boiler and Pressure Vessel Code, Section IX, 2001AWS B2.1, Standard Welding Procedure Specification (SWPS), 2002API 1104, Welding of Pipelines and Related Facilities, 19th Edition , 1999Substantiation: The National Fuel Gas Code is silent about how to make a welded joint for gas piping systems. The added section provides direction on welded joints. The standards indicated (AWS B2.1, API 1104, ASME Boiler and Pressure Vessel Code) are widely recognized as acceptable standards for making welded joints in gas piping systems. The code change also indicates that an approved welder must fabricate the joints. Gas piping installations are too important not to have a qualified person doing the work and the method of welding specified. As a matter of organization, the specifics of how to make a joint probably should appear in section 5.6.7 and expand the title of this chapter. Standards for brazing joints, or making flared joints, eventually should also be under this same section. Committee Meeting Action: Reject Committee Statement: The committee believes that welding specification and welder qualification should be a state or local issue. Gas piping installed under the National Fuel Gas code is well below 20 percent of the specified minimum yield strength. Pipe standards exclude welding qualification for pipelines operating at these low pressures. A.5.6.8.1 includes the requirements for welding.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-46 Log# 88 NFG-AAA Final Action: Reject(5.6.8.1) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: 5.6.8.1* Pipe Joints. Pipe joints shall be threaded, flanged, brazed or welded. Where nonferrous pipe brazed, the brazing materials shall have a melting point in excess of 1000°F (538°C). Brazing alloys shall not contain more than 0.05 percent phosphorus. Brazed joints made in the field by the tee-drill process shall not be permitted. Substantiation: There is no ANSI standard to field made joints. The wall thickness of the copper is reduced. Joint dimension and quality are tool and operator dependent. Brazed joint dimension is critical to joint strength. Committee Meeting Action: Reject Committee Statement: No technical substantiation is provided to support that this process should be prohibited.Number Eligible to Vote: 30Ballot Results: Affirmative: 25

Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-47 Log# 21 NFG-AAA Final Action: Reject(5.6.8.4(8)) ________________________________________________________________Submitter : Gregg Gress , International Code CouncilRecommendation: (8) Special Fittings. Fittings such as couplings, proprietary-type joints, saddle tees, gland-type compression fittings, and flared, flareless, or compression-type tubing fittings shall be (1) used within the fitting manufacturers ̓pressure-temperature recommendations; (2) used within the service conditions anticipated with respect to vibration, fatigue, thermal expansion, or contraction; (3) installed or braced to prevent separation of the joint by gas pressure or external physical damage; and (4) acceptable to the authority having jurisdiction. Substantiation: Saddle tees are typically an assembly that is bolted onto a pipe over a hole drilled into the pipe, thereby creating a branch opening. such assemblies employ an elastomeric gasket. Such gaskets are not employed in any piping/fitting system recognized by this code for indoor piping systems.Committee Meeting Action: Reject Committee Statement: No substantiation is provided to support that there are problems with saddle tees.Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: Saddle valves are not a part of the systems approved for use for gas in this code. This type of fitting has a tendency to leak especially when disturbed. In an active seismic zone this could be a real problem. I agree with the proponent.KOBEL: Saddle valves are not a part of the systems approved for use for gas in this code. Saddle valve gaskets harden and deteriorate over time leading to leaks especially after being disturbed. In an active seismic zone this would create hazardous conditions. I agree with the proponents substantiation.RIBBS: Saddle valves are not a part of the systems approved for use for gas in this code. This type of fitting has a tendency to leak especially when disturbed. In an active systemic zone this could be a real problem. I agree with the proponent.

_______________________________________________________________54-48 Log# 76 NFG-AAA Final Action: Accept(5.6.9(3)) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: 5.6.9 Plastic Piping, Joints, and Fittings.(3) Where compression-type mechanical joints are used, the gasket material in the fitting shall be compatible with the plastic piping and with the gas distributed by the system. An internal tubular rigid stiffener shall be used in conjunction with the fitting. The stiffener shall be flush with the end of the pipe or tubing and shall extend at least to the outside end of the pipe or tubing and shall extend at least to the outside end of the compression fitting when installed. The stiffener shall be free of rough or sharp edges and shall not be a force fit in the plastic. Split tubular stiffeners shall not be used.Substantiation: Editorial correction. It appears that an error in printing occurred during the publication of the 1992 edition. The error has been carried forward to the latest edition.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-49 Log# 13 NFG-AAA Final Action: Reject(5.7.2.3) ________________________________________________________________Submitter : Kurt Baltrusch, PE , Energy West, Inc.Recommendation: 5.7.2.3 Gas meters regulators shall be located at least 3 ft (0.9 m) from sources of ignition unless specifically designed for the application Substantiation: Gas meters close to a source of ignition are not a concern, however, gas regulators, most of which contain a relief valve, can vent gas and having them close to an ignition source is a concern. Also, the 3 ft. should be measured not from the meter, but from the gas regulator vent. There are some regulators with high-pressure cut offs that are acceptable in these areas.Committee Meeting Action: Reject Committee Statement: No technical substantiated is provided to delete requirements for meters or to add restrictions for regulators. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-50 Log# 66 NFG-AAA Final Action: Accept in Principle(5.9.1.1(3)) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 5.9.1.1 The requirements of this section shall be met and a

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Report on Proposals — Copyright, NFPA NFPA 54 piping system deemed to have overpressure protection where the following are included in the piping system:(3) The O nly the simultaneous failure of both devices occurs simultaneously in order to will produce overpressure in the down - stream system.Substantiation: Torturous language selection to avoid the use of “must,” but better than the present entry.Committee Meeting Action: Accept in Principle Revise to read as follows: 5.9.1.1 The requirements of this section shall be met and a piping system deemed to have overpressure protection where two devices (a service or line pressure regulator plus one other device) are installed such that: (1) Each device shall limit the pressure to a value that does not exceed the maximum working pressure of the downstream system. ( 2) The individual failure of either device shall not result in overpressure of the downstream system. Committee Statement: Accepted with additional editorial revisions.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-51 Log# CP128 NFG-AAA Final Action: Accept(6.1.2.1) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:6.1.2.1 Cover Requirements. Underground piping systems shall be installed with a minimum of 18 in. (460 mm) 12 in. (300 mm) of cover. Where external damage to the pipe is not likely to result, the minimum cover shall be 12 in. (300 mm). The minimum cover shall be increased to 18 in. (460 mm) if external damage to the pipe or tubing from external forces is likely to result. Where a minimum of 12 in. (300 mm) of cover cannot be provided, the pipe shall be installed in conduit or bridged (shielded). Substantiation: To coordinate with NFPA 58. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Negative: 2 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: KOBEL: This proposal could cause a conflict with the Uniform Plumbing CodeTM (UPC TM) and the Uniform Mechanical CodeTM (UMCTM) as no proposal has been made to change the language in these documents. This would also add to the conflict that already exists in the International Fuel Gas Code that is based on Z223.1 National Fuel Gas Code.RIBBS: This proposal if accepted could cause a conflict in the Uniform Plumbing CodeTM (UPCTM) and the Uniform Mechanical CodeTM (UMCTM) as no proposal has been made to change the language in these documents. This would also add to the conflict that already exists in the International Fuel Gas Code that is based on Z223.1, National Fuel Gas Code.

_______________________________________________________________54-52 Log# 1 NFG-AAA Final Action: Accept in Principle(6.1.6) ________________________________________________________________Submitter : Russel Iwan , Metropolitan Utilities District / Rep. Metropolitan Utilities DistrictRecommendation: 6.1.6 Piping Underground Beneath Buildings. Where the installation of gas piping underground beneath buildings is unavoidable, the piping shall be encased in an approved conduit designed to withstand the superimposed loads. The conduit shall extend into a normally usable and accessible portion of the building, and, at the point where the conduit terminates in the building . , the space between the conduit and the gas piping shall be sealed to prevent the possible entrance of any gas leakage. Where the end sealing is of a type that will retain the full pressure of the pipe, the conduit shall be designed for the same pressure as the pipe. The conduit shall extend at least 4 in. (100 mm) outside the building, be vented above grade to the outside, and be installed so as to prevent the entrance of water and insects. Substantiation: If gas piping is installed underground beneath a building in a conduit that extends into a normally usable and accessible portion of the building, and it leaks, I see no difference between this and any gas piping that is leaking within the building. If any gas piping is leaking, whether installed within a building or underground in a conduit, it should be shut off and repaired. I think it would be easier to detect a leak in this manner instead of venting it to the outside. There are also no guidelines in how to size the vent to the outside in event that the conduit is long and has several bends to get to the outside.Committee Meeting Action: Accept in Principle Revise 6.1.6 to read:6.1.6 Piping Underground Beneath Buildings. Where the installation of gas piping underground beneath buildings is unavoidable, the piping shall be encased in an approved conduit designed to withstand the superimposed loads and installed in accordance with 6.1.6.1 or 6.1.6.2. 6.1.6.1 Conduit with One End Terminating Outdoors. The conduit shall extend into an normally usable and accessible portion of the building and, at the point where the conduit terminates in the building, the space between the conduit and the gas piping shall be sealed to prevent the possible entrance of

any gas leakage. Where the end sealing is of a type that will retain the full pressure of the pipe, the conduit shall be designed for the same pressure as the pipe. The conduit shall extend at least 4 in. (100 mm) outside the building, be vented above grade to the outside, and be installed so as to prevent the entrance of water and insects.6.1.6.2 Conduit with Both Ends Terminating Indoors. Where the conduit originates and terminates within the same building, the conduit shall originate and terminate in an accessible portion of the building and shall not be sealed. Committee Statement: Accepted with revisions to meet the intent of the submitter. Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: I feel that current code language offers a higher degree of safety. Underground piping even in a conduit that has not been pressure tested to be sure it has no leaks can be subject to a higher degree of degradation. By grading the conduit to the outside you can relieve any build up of gas. True you may or may not detect the leak as fast. However this system will help keep any concentration of gas at a safer level.KOBEL: This proposal if accepted could cause a conflict with the Uniform Plumbing CodeTM (UPCTM) and the Uniform Mechanical Code TM (UMCTM) as no proposal has been made to change the language in these documents.RIBBS: This proposal if accepted could cause a conflict in the Uniform Plumbing Code TM (UPC TM) and the Uniform Mechanical Code TM (UMCTM) as no proposal has been made to change the language in these documents.Comment on Affirmative VIRGIL: In the Committee Meeting Action for 6.1.6.2. revise the text as follows because this section applies to both ends of the conduit, and text does not indicate which end should be accessible and not sealed.“...in an accessible portions of the building...”

_______________________________________________________________54-53 Log# CP122 NFG-AAA Final Action: Accept(6.1.7.2) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 6.1.7.2 Connections Between Metallic and Plastic Piping. Connections made outside and underground between metallic and plastic piping shall be made only with fittings conforming to either: (1) ASTM D 2513, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, Category I transition fittings.(2) ASTM F1973 Standard Specification for Factory Assembled Anodeless Risers and Transition Fittings. Substantiation: Revised to add a relevant reference standard.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-54 Log# 19 NFG-AAA Final Action: Reject(6.2.6.1) ________________________________________________________________Submitter : Gregg Gress , International Code CouncilRecommendation: 6.2.6.1 Piping shall be supported with pipe hooks, metal pipe straps, bands, brackets, or hangers suitable for the type and size of piping, of adequate strength and quality, and located at intervals so as to prevent or damp out excessive vibration. All such means of support shall be metallic and compatible with the piping material. Piping shall be anchored to prevent undue strains on connected equipment and shall not be supported by other piping. Pipe hangers and supports shall conform to the requirements of ANSI/MSS SP-58, Pipe Hangers and Supports - Materials, Design and Manufacture. Substantiation: Piping is commonly supported with plastic stapping and plastic pipe hooks which could fail early in a fire and which could allow piping movement due to material creep. Metallic piping should be supported with like materials. The current text can be interpreted to allow plastic devices for all except pipe straps. Committee Meeting Action: Reject Committee Statement: The proposal would restrict hangers that are being used. Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: I agree with the proponent. Very few listed hangers are used and very few of the hangers that are manufactured for use with specific materials are used with the intended materials. Many try to use plastic hangers and strap with cast and iron pipe. These materials can become brittle over time and break. I feel the code change makes it much clearer that metallic pipe needs to be supported with the intended hangers and strap.KOBEL: I agree with the proponents substantiation. Using plastic hangers and straps with CSST and iron pipe could lead to failure. These materials can become brittle over time and break. I feel the code change makes it much clearer that metallic pipe needs to be supported with the intended hangers and

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Report on Proposals — Copyright, NFPA NFPA 54 strap.RIBBS: I agree with the proponent. Very few listed hangers are used and very few of the hangers that are manufactured for use with specific materials are used with the intended materials. Many try to use plastic hangers and strap with csst and iron pipe. These materials can become brittle over time and break. I feel the code change makes it much clearer that metallic pipe needs to be supported with the intended hangers and strap.

_______________________________________________________________54-55 Log# 32 NFG-AAA Final Action: Accept in Principle(6.2.6.3 (New) ) ________________________________________________________________Submitter : Edward Angelone , KeySpan Energy Delivery / Rep. New York State Gas Utilization CommitteeRecommendation: 6.2.6.3 Gas piping across flat roofs should be properly anchored to protect against wind storm damage. The piping should be anchored as per table 6.2.6.2 The piping should be strapped permanently to the roof top by means of additional support or directly to the roof utilizing roof support beams. Substantiation: The code is silent to roof top piping and should be addressed.Committee Meeting Action: Accept in Principle Revise as follows:6.2.6.3 Piping on Roof Tops. Gas piping installed on the roof surfaces shall be elevated above the roof surface and shall be supported in accordance with Table 6.2.6.2. Committee Statement: The code is silent on the installation of piping installed on roofs. The proposed coverage would provide minimum installation requirements. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-56 Log# 129 NFG-AAA Final Action: Accept(6.5.3 and A.6.5.3) ________________________________________________________________Submitter : Terry Swisher , IAPMO / Rep. Committee on Uniform Plumbing CodeRecommendation: Delete text as follows:6.5.3* Mitered Bends. Mitered bends shall be permitted subject to the following limitations:(1) Miters shall not be used in systems having a design pressure greater than 50 psi (340 kPa). Deflections caused by misalignments up to 3 degrees shall not be considered as miters.(2) The total deflection angle at each miter shall not exceed 90 degrees.A.6.5.3 Care should be taken in making mitered joints to provide proper root opening and alignment and full weld penetration. Substantiation: UNIFORM PLUMBING CODE (UPC) Section 1211.5.3 Mitered Joints and NFPA 54 Section 6.5.3 and the Annex reference are to be deleted because this joining method is no longer a gas industry practice. UPC Section 1211.5 and NFPA Section 6.5 and Annex delete the reference to field bends and renumber accordingly.See also Section 1211.5 and NFPA 6.5 in their entirety. The Task Group recommends the UPC & UMC – Technical Committees and the NFPA 54-TC review these requirements to see if they are still valid and do these requirements apply to all the materials allowed for piping systems by the codes. Specific concerns have been raised about steel pipe such as how the welding process for the manufacture of the pipe can affect bending. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-57 Log# 137 NFG-AAA Final Action: Accept(6.7.2.1) ________________________________________________________________Submitter : James P. Brewer , Magic Sweep Corp. / Rep. National Chimney Sweep GuildRecommendation: Modifiy last sentence of section 6.7.2.1 as follows:When equipment is disconnected from an outlet and the outlet is not to be used again immediately, it shall be closed capped or plugged gastight. Substantiation: The current wording, “closed gastight” could be interpreted to mean simply closing the gas valve serving the outlet. The real intent of this section is to prevent gas flow from unused openings irregardless of the position of the gas valve.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-58 Log# CP123 NFG-AAA Final Action: Accept(6.9.2.3) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Relocate 6.9.3 to 6.9.2.3.6.9.3 6.9.2.3 Emergency Shutoff Valves. An exterior shutoff valve to permit

turning off the gas supply to each building in an emergency shall be provided. The emergency shutoff valves shall be plainly marked as such and their locations posted as required by the authority having jurisdiction. Substantiation: The relocation no longer requires an emergency shutoff valve for buildings served by a single gas meter. The utility service valve will still be installed because it is required by Federal Regulations, and therefore there will be the same number of emergency shutoff valves installed.The code will still require emergency valves for systems where one meter serves multiple systems.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-59 Log# 82 NFG-AAA Final Action: Reject(6.9.3 Exception (New) ) ________________________________________________________________Submitter : Gregg Gress , International Code CouncilRecommendation: 6.9.3 Emergency Shutoff Valves. An exterior shutoff valve to permit turning off the gas supply to each building in an emergency shall be provided. The emergency shutoff valves shall be plainly marked as such and their locations posted as required by the authority having jurisdiction.Exception: Emergency shutoff valves serving one and two-family dwellings shall be permitted to be installed indoors provided that such valves control all outlets within and exterior to the building. Substantiation: This section requires all buildings to have an exterior emergency shutoff valve, which would include dwelling units. An exterior valve that is “posted” invites vandalism. Homeowners might return from vacation to find their water piping frozen and severe property damage. If the service riser valve does not satisfy the requirement of this section, a ball valve will likely be installed which is conspicuous and easily operated by pranksters or vandals. Committee Meeting Action: Reject Committee Statement: Refer to Proposal 54-58 (Log #CP123) which makes this proposal moot.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-60 Log# 94 NFG-AAA Final Action: Accept(7.1.1.4) ________________________________________________________________Submitter : Gregg Gress , International Code CouncilRecommendation: 7.1.1.4 Where new branches are installed from the point of delivery to new appliance(s), only the newly installed branch(es) shall be required to be pressure tested. Connections between the new piping and the existing piping shall be tested with a noncorrosive leak-detecting fluid or approved leak-detecting methods. Substantiation: The scope of this section is unnecessarily limited to branches that take off from the point of delivery. This provision is reasonable for new branches anywhere in a piping system. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-61 Log# 111 NFG-AAA Final Action: Reject(7.1.1.7 (New) ) ________________________________________________________________Submitter : John J. Lentini , Applied Technical Services, Inc.Recommendation: Add a new paragraph:7.1.1.7 For fixed systems, responsibility for ensuring that the requirements of this section have been met shall rest with the fuel gas retailer.Substantiation: The code, as currently written, requires inspection and testing of new, or out-of-gas systems, but it does not fix responsibility on a particular entity. This failure to name the responsible entity allows responsible parties to abdicate responsibility, resulting in tragic consequences. By fixing responsibility on the retailer, the entity in the best position to conduct an inspection and pressure test, retailers will be more focused on safety. Nothing in this proposal would prevent the retailer from contracting with another entity for actually conducting the tests and inspections required for safe operation, but the retailer would still retain ultimate responsibility.Committee Meeting Action: Reject Committee Statement: The Code should not assign responsibility, rather it should require what is needed for safety.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-62 Log# 8 NFG-AAA Final Action: Reject(7.1.1.7 (New) ) ________________________________________________________________2002: The comment proposed something that could not be properly handled within the time frame for processing the 2002 edition of NFPA 54, and was held for the 2005 edition.

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Report on Proposals — Copyright, NFPA NFPA 54 Submitter : Martin P. Petchul, PE , Peidmont Natural GasRecommendation: Add new text to read as follows: 7.1.1.7 Where the maximum working pressure of the existing gas piping system is increased, the piping system shall be pressure tested according to 7.1. A visual examination of the existing gas piping system is not required under these conditions. Where repairs or additions are made to the existing gas piping system, the affected piping shall be tested at the newly established test pressure. Connections to the piping system shall be tested with a noncorrosive leak-detecting fluid or approved leak-detecting methods. Substantiation: Coverage is needed for instances when the pressure of an existing piping system is increased. This frequently occurs when a contractor wants to use an existing low pressure (inches WC) system with higher pressure gas (either higher inches WC or PSIG). Please note: it is possible to raise the pressure of the system and still be within the previously met test pressure requirements of 7.1.4.2. The goal of the proposal is to require a pressure test and not a visual inspection when increasing the working pressure of an existing piping system . Committee Meeting Action: Reject Committee Statement: All piping systems are tested at a minimum of 3 psi. These systems can be used up to 2 psi. Based on this, and a review of the substantiation provided, the change is not needed. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-63 Log# 67 NFG-AAA Final Action: Reject(7.3.2) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 7.3.2 Placing in Operation. When piping full of air is placed in operation, the air in the piping shall be displaced with fuel gas, except where such piping is required by Table 7.3.2 to be purged with an inert gas prior to introduction of fuel gas. The air can be safely displaced with fuel gas provided that a moderately rapid and continuous flow of fuel gas is introduced at one end of the line and air is vented out at the other end. The fuel gas flow shall be continued without interruption until the vented gas is free of air. The point of discharge shall not be left unattended during purging. After purging, the vent shall then be closed. Where required by Table 7.3.2, the air in the piping shall first be displaced with an inert gas, and the inert gas shall then be displaced with fuel gas. 7.3.2 Placing in Operation. When piping full of air is placed in operation, the air in the piping shall be displaced by one of the following means:7.3.2.1 The general procedure is to purge the air in the piping with an inert gas, which is then purged by fuel gas.7.3.2.2 When the size and length of the piping to be placed in operation are less than the values given in Table 7.3.2, the following procedure is permitted:The air in the piping shall be purged with fuel gas, that is, a moderately rapid and continuous flow of fuel gas in introduced at one end of the line and air is vented out the other end.7.3.2.3 In either case, the point of discharge shall not be left unattended during purging. After purging, the vent shall be closed. Substantiation: To clarify and simplify the present wording.Committee Meeting Action: Reject Committee Statement: The proposed revision does not add clarity.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-64 Log# CP139 NFG-AAA Final Action: Accept(Chapter 8) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 8 Appliance, Equipment and Accessory Installation8.1.1* Appliances, Equipment and Accessories, and Equipment To Be Approved. Gas A a ppliances, equipment and accessories , and gas utilization equipment shall be approved. Approved shall mean “acceptable to the authority having jurisdiction.” Acceptance of unlisted appliances, gas utilization equipment and accessories shall be on the basis of a sound engineering evaluation. In such cases, the appliance, equipment or accessory shall be safe and suitable for the proposed service and shall be recommended for the service by the manufacturer.8.1.2 Added or Converted Appliances Equipment . When additional or replacement appliances or equipment is are installed or an appliance is converted to gas from another fuel, the location in which the appliances or equipment is are to be operated shall be checked to verify the following:(2) The installation components and equipment appliances meet the clearances to combustible material provisions of 8.2.2. It shall be determined that the installation and operation of the additional or replacement equipment appliances does not render the remaining equipment appliances unsafe for continued operation.8.1.3 Type of Gas(es). It shall be determined whether the appliance gas utilization equipment has been designed for use with the gas to which it will be connected. No attempt shall be made to convert the appliance equipment from

the gas specified on the rating plate for use with a different gas without consulting the installation instruction, the serving gas supplier, or the appliance equipment manufacturer for complete instructions.8.1.4 Safety Shutoff Devices for Unlisted LP- Gas Appliances Equipment Used Indoors. Unlisted appliances gas utilization equipment for use with ...8.1.6* Protection of Appliances Gas Equipment from Fumes or Gases Other than Products of Combustion. 8.1.6.2 Non-direct-vent type gas appliances installed ... shall be located in a mechanical an equipment room separate ... Direct vent appliances equipment shall be ...8.1.7 Process Air. In addition ... cooling of appliances , equipment or material, controlling ...8.1.8.1 Structural members of a building shall not pass through appliances gas utilization equipment having ...8.1.8.2 Structural members passing through appliances gas utilization equipment having an ... Building columns, girders, beams, or trusses shall not be installed within appliances equipment , unless ...8.1.8.3 Gas utilization Appliances and equipment shall be furnished ... the building structure, appliance and equipment.8.1.8.4 At the locations selected for installation of gas utilization appliances and equipment, the dynamic and static load-carrying capacities of the building structure shall be checked to determine if they are adequate to carry the additional loads. The appliances and equipment shall be supported and ...8.1.9 Flammable Vapors. Gas A a ppliances shall not be installed ... Gas utilization equipment Appliances installed in compliance with ...8.1.10.1 Gas utilization equipment Appliances in residential garages and ...8.1.10.2 Such equipment appliances shall be located or protected ...8.1.10.3 When appliances are installed in a separate, enclosed space having access only from outside of the garage, such equipment appliance shall be permitted to ...8.1.11.1 Parking Structures. Gas utilization equipment Appliances installed in enclosed ...8.1.11.2 Repair Garages. Gas utilization equipment Appliances installed in repair ...Exception No. 2: Heating equipment appliances for vehicle repair areas where ...8.1.13 Gas Equipment Appliance Physical Protection. Where it is necessary to locate appliances gas utilization equipment close to a passageway traveled by vehicles or machinery equipment , guardrails or bumper plates shall be installed to protect the equipment from damage.8.1.14 Venting of Flue Gases. Gas utilization equipment Appliances shall be vented in accordance with the provisions of Chapter 10.8.1.15 Extra Device or Attachment. No device or attachment shall be installed on any gas utilization equipment appliance that could in any way impair the combustion of gas.8.1.16 Adequate Capacity of Piping. When additional gas utilization equipment is appliances are being connected to a gas piping system .. Where inadequate, the existing system shall be enlarged as necessary, or separate gas piping of adequate capacity shall be run from the point of delivery to the appliance equipment . 8.1.17 Avoid Strain on Gas Piping. Gas utilization equipment Appliances shall be supported ...8.1.18 Gas Appliance Pressure Regulators. Where the gas supply pressure is higher than that at which the gas utilization equipment appliance is designed to operate or varies beyond the design pressure limits of the equipment appliance , an gas appliance pressure regulator shall be installed.8.1.19 Venting of Gas Appliance Pressure Regulators.(1) Gas A a ppliance pressure regulators requiring access to the atmosphere for successful operation shall be equipped with vent piping leading outdoors or, if the regulator vent is an integral part of the equipment appliance , into the ...(2) Vent limiting means shall be employed on listed gas appliance pressure regulators only.(4) Under no circumstances shall a regulator be vented to the gas utilization equipment appliance flue or exhaust system.(6) A vent line(s) from a gas appliance pressure regulator ...8.1.20 Bleed Lines for Diaphragm-Type Valves.(3) Bleed lines shall not terminate in the gas utilization equipment appliance flue or exhaust system.(5) A bleed line(s) from a diaphragm type valve and a vent line(s) from a gas appliance pressure regulator shall ...8.1.21 Combination of Appliances and Equipment. Any combination of appliances , gas utilization equipment, attachments, or devices used together in any manner shall comply with the standards that apply to the individual appliance and equipment.8.1.22 Installation Instructions. The installing agency shall conform with the appliance and equipment manufacturers ̓recommendations in completing an installation.8.1.23 Protection of Outdoor Equipment. Gas utilization equipment Appliances not listed for outdoor installation but installed outdoors shall be provided with protection to the degree that the environment requires. Equipment Appliances listed for outdoor installation shall be permitted to be installed without protection in accordance with the provisions of their listing. [See 8.2.1.]8.2.1 Accessibility for Service. All gas utilization equipment appliances shall be located with respect to building construction and other equipment so as to permit access to the gas utilization equipment appliance . Sufficient clearance

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Report on Proposals — Copyright, NFPA NFPA 54 shall be ... area adjacent to the equipment appliance shall be floored.8.2.2 Clearance to Combustible Materials. Gas utilization equipment Appliances and their vent connectors shall be ... Minimum clearances between combustible walls and the back and sides of various conventional types of equipment appliances and their vent connectors are ...8.2.3 Installation of Carpeting. Equipment Appliances shall not be installed on carpeting, unless the equipment appliance is listed for such installation. 8.3.1.1 Air for combustion, ventilation, and dilution of flue gases for gas utilization equipment appliances installed in ...8.3.1.2 Gas A a ppliances of other than ...8.3.1.3 Equipment Appliances shall be located ...8.3.1.4 Where used, a ... enclosure as the equipment appliance served so ...8.3.2.3 Indoor Opening Size and Location.(1)* Combining spaces on the same story. Each opening shall ... total input rating of all gas utilization equipment appliances in the space, but ...(2) Combining spaces in different stories. The volumes of ... total input rating of all gas utilization equipment appliances .8.3.3.1 Two Permanent Openings Method:(1)* Where directly communicating with ... total input rating of all equipment appliances in the enclosure. ...(2)* Where communicating with ,,, total input rating of all equipment appliances in the enclosure. ...8.3.3.2* One Permanent Opening Method: ... The equipment appliance shall have clearances of ...(1) ... total input rating of all equipment appliances located in the enclosure ...8.3.7.2 Motorized louvers shall be interlocked with the equipment appliance so they ...8.3.8.7 Exception: Direct vent gas-fired appliances designed for ...8.4 Appliances Equipment on Roofs.8.4.1.1 Gas utilization equipment Appliances on roofs shall be ... Where enclosures are ... service access panel(s) of the equipment appliance and the wall of the enclosure. 8.4.1.2 Roofs on which equipment is appliances are to be installed shall ...8.4.2 Installation of Equipment Appliances on Roofs.8.4.2.1 Gas utilization equipment Appliances shall be ...8.4.2.2 Equipment Appliances shall be installed on ... any part of the equipment appliance and the ...8.4.2.3 All equipment appliances requiring an external source of electrical power for its operation shall be provided with (1) a readily accessible electrical disconnecting means within sight of the equipment appliance that will completely deenergize the equipment appliance , and (2) a 120-V ac grounding-type receptacle outlet on the roof adjacent to the equipment appliance . The receptacle outlet shall be on the supply side of the disconnect switch.8.4.2.4 Where water stands on the roof at the equipment appliance or in the passageways to the equipment appliance , or where ... Such platform(s) or walkway(s) shall be located adjacent to the equipment appliance and control panels so that the equipment appliance can be safely serviced where water stands on the roof.8.4.3 Access to Equipment Appliances on Roofs.8.4.3.1 Gas utilization equipment Appliances located on roofs or other elevated locations shall be accessible.8.5 Appliance and Equipment Connections to Building Piping.8.5.1 Connecting Gas Appliances and Equipment. Gas utilization equipment Appliances and equipment shall be connected ...(3) ... The connector shall be used in accordance with the terms of their listing, and shall be in the same room as the equipment appliance . ...(6) Gas-fired F f ood service (commercial cooking) equipment appliances listed for use with casters or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment appliances that can be moved...8.5.2 Use of Nonmetallic Gas Hose Connectors.(1) Indoor. Indoor gas hose connectors shall be used only to connect laboratory, shop, and ironing equipment appliances requiring mobility during operation. An equipment appliance shutoff valve shall ...(2) Outdoor. Outdoor gas hose connectors are permitted to connect portable outdoor gas-fired equipment appliances . An equipment appliance shutoff valve .. This connection ... area where the equipment appliance is to be used. 8.5.3 Connection of Portable and Mobile Industrial Gas Equipment.8.5.3.1 Where portable industrial gas utilization equipment appliances or equipment appliances requiring mobility or subject to vibration is ...8.5.3.2 Where industrial gas utilization equipment appliances requiring mobility is connected to ...8.5.3.3 Where industrial gas utilization equipment appliances subject to vibration is ...8.5.4 Equipment Appliance Shutoff Valves and Connections. Gas utilization equipment Appliances connected to a piping system shall ... installed within 6 ft (1.8 m) of the equipment appliance it serves. … Shutoff valves serving decorative gas appliances shall be ...8.5.5 Quick-Disconnect Devices. Quick disconnect devices used to connect equipment appliances to the building piping shall be listed. 8.5.6* Gas Convenience Outlets. Gas utilization equipment Appliances shall be permitted to ...8.5.7 Sediment Trap. Where a sediment trap is not incorporated as a part of the gas utilization equipment appliance , a sediment trap shall be installed as close

to the inlet of the equipment appliance as practical at the time of equipment appliance installation. 8.5.8 Installation of Piping. Piping shall be installed in a manner not to interfere with inspection, maintenance, or servicing of the gas utilization equipment appliances .8.6.1 Electrical Connections. Electrical connections between gas utilization equipment appliances and the building wiring, including the grounding of the equipment appliances , shall conform to NFPA 70, National Electrical Code.8.6.2 Electrical Ignition and Control Devices. Electrical ignition... operation of the gas utilization equipment appliance in the event of ...8.6.3 Electrical Circuit. The electrical ... with the gas utilization equipment appliances shall be in accordance with the wiring diagrams supplied with the equipment appliance .8.6.4 Continuous Power. All gas utilization equipment appliances using electrical controls shall ... Central heating equipment appliances shall be provided ...8.7.2 Drafts. Any hole in the plaster ... thermostat to the gas utilization equipment appliance being controlled shall ... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 8. Also see 54-2 (Log #CP133), 54-40 (Log #CP138), 54-86 (Log #CP140), and 54-101 (Log #CP141) for remaining revisions to chapters.The National Fuel Gas Code is sometimes inconsistent in the use of such terms as “gas utilization equipment,” “equipment,” “appliance,” “gas-burning devices,” “gas-fired appliances,” etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate “appliances” that consume gas from “equipment” and “systems” used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-64a Log# CP111 NFG-AAA Final Action: Accept(8.1.1) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 3.3.40 Chimney, Factory-Built. A chimney composed of ... with the t erms of listing manufacturerʼs installation instructions to form the completed chimney.3.3.112 Gas Vent. A passageway composed of ... with the terms of listing manufacturerʼs installation instructions for conveying ...8.1.1* Appliances, Accessories, and Equipment To Be Approved. Gas appliances, accessories, and gas utilization equipment shall be approved. Approved shall mean “acceptable to the authority having jurisdiction.” Listed appliances, accessories and equipment shall be installed in accordance with the manufacturerʼs installation instructions. Acceptance of ...8.1.23 Protection of Outdoor Equipment. ... Equipment listed ... in accordance with the p rovisions of their listing manufacturerʼs installation instructions . 8.3.8.7 Exception: Direct vent gas-fired appliances ... installed in accordance with t he listing and the manufacturerʼs instruction s .8.4.2.1 Gas utilization equipment shall be installed in accordance with its listing and the manufacturerʼs installation instructions.8.5.1 (3) ... The connector shall be used in accordance with the t erms of their listing manufacturerʼs installation instructions , and shall be ...8.5.2 Use of Nonmetallic Gas Hose Connectors. Listed gas hose connectors ... with the terms of their listing manufacturerʼs installation instructions and as follows:8.5.6* Gas Convenience Outlets. Gas utilization equipment shall be ... used in accordance with the terms of their listings manufacturerʼs installation instructions .9.1.1 Application. .... Listed gas utilization equipment shall be installed in accordance with their listing and installed in accordance with the manufacturers ̓ manufacturerʼs installation instructions, or as ...9.2.3 (1) Listed air conditioning equipment … shall be installed with clearances per the terms of their listing and in accordance with the manufacturerʼs instructions. …9.3.2.1 Listed central heating furnaces and low-pressure boilers ... shall be installed with clearances per the terms of their listing and in accordance with the manufacturerʼs instructions. ...Table 9.2.3(b) 11. Listed single-wall connectors shall be installed in accordance with the terms of their listing and the manufacturerʼs installation instructions.9.4.1 (1) ... Clothes dryers listed for installation at reduced clearances shall be installed in accordance with the ir listing manufacturerʼs installation instructions . …9.6.2.1 A listed decorative appliance for installation in a vented fireplace shall be installed in accordance with its listing and the manufacturerʼs installation instructions.9.7.2 (1) Listed vented gas fireplaces shall be installed in accordance with the ir listing and the manufacturers ̓ manufacturerʼs installation instructions and ...9.10.1 (1) … Furnaces listed for installation at lesser clearances shall be installed in accordance with the ir listings manufactureʼs installation instructions . …9.11.1 (1) Listed floor furnaces shall be installed in accordance with the ir

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Report on Proposals — Copyright, NFPA NFPA 54 listing and the manufacturers ̓ manufacturerʼs installation instructions. 9.11.2.1 Listed automatically operated floor furnaces shall be equipped with temperature limit controls in accordance with the terms of their listing .9.12.1 Clearance for Listed Equipment. Floor-mounted food service equipment ... in accordance with its listing and the manufacturerʼs installation instructions. …9.12.3.1 Listed floor-mounted food service equipment ... in accordance with its listing and the manufacturerʼs installation instructions.9.12.6 For Use with Casters. Floor-mounted equipment ... in accordance with the ir listing and the accompanying manufacturerʼs installation instructions for ...9.13.2 Food service counter appliances ... in accordance with the ir listing and the manufacturers ̓ manufacturerʼs installation instructions. 9.15.1.1 Clearance from Combustible Material.(1) Listed floor-mounted household cooking appliances... in accordance with the ir listing and the manufacturers ̓ manufacturerʼs installation instructions.(3) Listed household cooking appliances ...in accordance with the manufacturerʼs installation instructions for standards applying to the supplementary ...9.15.1.2 (3) A listed cooking appliance or microwave oven ... the terms of the upper applianceʼs l isting and the manufacturerʼs installation instructions.9.15.2.2 (3) A listed cooking appliance or microwave oven ... the terms of the upper applianceʼs listing and the manufacturerʼs installation instructions.9.15.2.1 Installation. Listed built-in household cooking appliances shall be installed in accordance with their listing and the manufacturerʼs installation instructions. 9.16.1 Clearances for Listed Appliances. Listed illuminating appliances ... in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions.9.18.2 Clearance. (1) Listed heaters ... in accordance with the ir listing and the manufacturers ̓manufacturerʼs installation instructions.9.19.1 Listed Units. Listed open-top broiler units shall be installed in accordance with their listing and the manufacturers ̓ manufacturerʼs installation instructions.9.20.1 Listed Units. Listed outdoor cooking appliances ... in accordance with their listing and the manufacturers ̓ manufacturerʼs installation instructions.9.21.2 Clearance. (2) A listed pool heater shall be installed in accordance with its listing and the manufacturerʼs installation instructions.9.23.3 Clearance. … Listed room heaters shall be installed in accordance with their listings and the manufacturers ʻ manufacturerʼs installation instructions. In no case shall the clearances be such as to interfere with combustion air and accessibility. …9.25.1 Clearance. A listed gas-fired toilet shall be installed in accordance with its listing and the manufacturerʼs installation instructions, provided ...9.26.2.1 (1) ... A unit heater listed for reduced clearances shall be installed in accordance with its listing and the manufacturerʼs installation instructions. ...9.26.2.2 (1) ... A unit heater listed for reduced clearances shall be installed in accordance with its listing and the manufacturerʼs installation instructions.9.27.1.1 Listed wall furnaces shall be installed in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions. ...9.28.2.1 ... Listed water heaters shall be installed in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions.9.28.3 Pressure-Limiting Devices. A water heater installation shall be provided with overpressure protection by means of an approved, listed device installed in accordance with the terms of its listing and the manufacturerʼs installation instructions. 9.28.4 Temperature-Limiting Devices. Water heater installation ... in accordance with the terms of its listing and the manufacturers ʻ manufacturerʼs installation instructions. 9.28.5 Temperature, Pressure, and Vacuum Relief Devices. The installation of T t emperature, pressure, and vacuum relief devices or combinations thereof, and automatic gas shutoff devices, shall be installed in accordance with the terms of their listing and the manufacturers ʻ manufacturerʼs installation instructions. 10.1 General. .... Listed vents shall be installed in accordance with the manufacturerʼs installation instructions. 10.2.5 Direct-Vent Equipment. Listed direct-vent ... in accordance with the terms of its listing, the manufacturerʼs installation instructions , and 10.8.3.10.2.6 Equipment with Integral Vents. Gas utilization equipment ... in accordance with its listing, t he manufacturers ̓installation instructions , and 10.8.1 and 10.8.2.10.3.4.1 Mechanical draft systems ... in accordance with t he terms of their listing and both the appliance and the mechanical draft system manufacturers ʻ manufacturerʼs installation instructions.10.4.3 Special Gas Vent. Special gas vent ... in accordance with the terms of the special gas vent listing and the manufacturers ̓ manufacturerʼs installation instructions.10.5.1.1 Factory-built chimneys shall be installed in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions10.5.1.3* Exception: … The liner shall be installed in accordance with the liner manufacturerʼs installation instructions and the terms of the listing . … 10.5.6 Support of Chimneys. … Listed factory-built chimneys ... in accordance with their listings and the manufacturers ʻ manufacturerʼs installation

instructions.10.5.8.2 Exception: Direct vent gas-fired appliances ... in accordance with the listing and the manufacturerʼs installation instruction s .10.6.1 Application. The installation of gas vents shall comply with the following requirements: (1) Gas vents shall be installed in accordance with the terms of their listings and the manufacturers ̓ manufacturerʼs installation instructions.(6) Gas vents installed ... in accordance with the terms of their listing and the manufacturers ̓manufacturerʼs installation instructions. 10.6.5 Support of Gas Vents. Gas vents ... in accordance with their listings and the manufacturers ʻ manufacturerʼs installation instructions.Table 10.7.4.4 Note: These clearances shall apply unless the listing installation instructions of an a listed appliance or connector specifies different clearances, in which case the listed clearances shall apply.10.15 Obstructions. (1) Draft regulators and safety controls ... in accordance with the terms of their listing manufacturerʼs installation instructions .(3) Listed heat reclaimers and automatically operated vent dampers installed in accordance with the t erms of their listing manufacturerʼs installation instructions .11.1.2 (3) Listed appliances derated in accordance with the terms of the listing manufacturerʼs installation instructions shall be permitted. 13.1.9 Exception: Vents serving listed appliances installed in accordance with the appliance manufacturerʼs installation instructions and the terms of the listing . 13.2.20 Exception: Vents serving listed appliances installed in accordance with the appliance manufacturerʼs installation instructions and the terms of the listing . K.1.13 Fireplace, Factory-Built. A fireplace ... in accordance with the terms of listing manufacturerʼs installation instructions to form the completed fireplace.Substantiation: The phrasing “in accordance with its listing” is being eliminated from the entire code since the installer rarely has the product standard. The product standard contains required installation instructions as part of the listing that must be supplied by each manufacturer. Therefore in many cases, installed in accordance with itʼs listing is the same as the manufacturerʼs installation instructions. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 1 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, RIBBSExplanation of Negative: WOZNIAK: Removal of the statement, “...in accordance with its Listing” and replacement with “...manufacturerʼs installation instruction”, is not, contrary to the Rationale, the same. While the installer may not have the product standard or the report of the testing agency, the description of the product standard or the report of the testing agency, the description of the product category is readily obtainable. The “terms of the listing” are usually described therein. Reference to the listing in the Code - and reinforcement of the manufacturerʼs instructions - is essential to verify that the acceptability of the installation is indeed according to the specifications of the testing agency (vis-à-vis the standard) and not soley based upon the manufacturerʼs instructions.

_______________________________________________________________54-65 Log# CP136 NFG-AAA Final Action: Accept(8.1.4) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 8.1.4 Safety Shutoff Devices for Unlisted LP-Gas Equipment Used Indoors. Unlisted gas utilization equipment for use with undiluted liquefied petroleum gases and installed indoors , except attended laboratory equipment, shall be equipped with safety shutoff devices of the complete shutoff type. Substantiation: To allow lab equipment that do not contain shuttoff valves. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-66 Log# 115 NFG-AAA Final Action: Reject(8.1.10.1) ________________________________________________________________Submitter : Robert S. Boiko , R. Boiko CorporationRecommendation: Revise text to read as follows:Gas Utilization equipment in residential garages and in adjacent spaces that open to the garage and are not part of the living space of a dwelling unit shall be installed so that all burners and burner ignition devices are located not less than 18 in. (460 mm) above the floor unless listed as flammable vapor ignition resistant . Substantiation: They do not allow these “listed” heaters to be near hazardous flammable materials, but NFPA does. NFPA NEC 2002 is cited and demonstrates the special hazardous environment in garages and the very special precautions to take to avoid explosions and serious damage or death.

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Report on Proposals — Copyright, NFPA NFPA 54 Note: Supporting material is available for review at NFPA Headquarters.Committee Meeting Action: Reject Committee Statement: Residential garages are not classified, therefore the substantiation is not correct.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-67 Log# 118 NFG-AAA Final Action: Reject(8.1.10.1) ________________________________________________________________Submitter : Robert S. Boiko , R. Boiko CorporationRecommendation: Revise text to read as follows:Gas Utilization equipment in residential garages and in adjacent spaces that open to the garage and are not part of the living space of a dwelling unit shall be installed so that all burners and burner ignition devices are located not less than 18 in. (460 mm) above the floor unless listed as flammable vapor ignition resistant and of the direct vent or coaxial/concentric vent type where all combustion air is drawn from outside the structure. Substantiation: This is an addendum/update to 54-49 (Log #13). In addition to the previous supporting information the attached supporting material show two types of residential water heaters produced by all of the major manufacturers, that take all combustion air from outside and exhaust to the outside. One model requires no electrical connection, the other uses a 120 volt blower system. The chambers are sealed from burning contaminated air.Note: Supporting material is available for review at NFPA Headquarters.Committee Meeting Action: Reject Committee Statement: No reason is provided to support that the current requirements are inadequate.Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: I feel that the proponent is correct. Since the real issue is the source of combustion and not just the burner. Also if an incident does occur and the equipment functions properly there is still a high repair cost to reactivate the equipment. Tests show that raising the source of ignition to 18 in. above the floor delays ignition of fumes considerably which gives an added margin of safety and time to react to a spill or other incident that could create flammable vapors.

_______________________________________________________________54-68 Log# 68 NFG-AAA Final Action: Reject(8.3.3.2) ________________________________________________________________Submitter : Richard E. White , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: 8.3.3.2* One Permanent Opening Method: One permanent opening, commencing within 12 in. (300 mm) of the top of the enclosure, shall be provided. The equipment appliance shall have clearances of at least 1 in. (25 mm) from the sides and back and 6 in. (150 mm) from the f ront of the appliance enclosure . The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that freely communicate with the outdoors [see Figure A.8.3.3.2] and shall have a minimum free area of the comply with the following limitations :(1) Minimum free area of 1 in.2 /3000 Btu/hr (700 mm2 /kW) of the total input rating of all equipment located in the enclosure, and (2) Minimum free area of n N ot less than the sum of the areas of all vent connectors in the space ,(3) Minimum dimension of not less than 3 in. Substantiation: To clarify the wording and add the requirement of 3 inch minimum dimension.Committee Meeting Action: Reject Committee Statement: The proposal does not add clarity. The 3 in. requirement is currently in 8.3.3Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-69 Log# 112 NFG-AAA Final Action: Accept(8.3.7) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 1. Revise 8.3.7 to read as follows:8.3.7 Louvers and Grilles and Screens. 8.3.7.1 Louvers and Grilles. The required size of openings for combustion, ventilation, and dilution air shall be based on the net free area of each opening. Where the free area through a design of louver or grille or screen is known, it shall be used in calculating the size opening required to provide the free area specified. Where the louver and grille design and free area are not known, it shall be assumed that wood louvers will have 25 percent free area and metal louvers and grilles will have 75 percent free area. Nonmotorized louvers and grilles shall be fixed in the open position.

8.3.7.2 Minimum Screen Mesh Size. Screens shall not be smaller than 1/4-in. mesh. Renumber 8.3.7.2 as 8.3.7.3Substantiation: The requirement was inadvertently deleted form the 1999 edition of the code and users need the text. No reason for the deletion in 1999 was found.Committee Meeting Action: Accept 1. Accept the proposed 8.3.7 and 8.3.7.12. Revise 8.3.7.2 to read:8.3.7.2 Minimum Screen Mesh Size. Screens shall have a mesh size not smaller than 1/4-inch. Committee Statement: Accepted with an editorial change.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-70 Log# 20 NFG-AAA Final Action: Accept(8.3.8.1) ________________________________________________________________Submitter : Gregg Gress , International Code CouncilRecommendation: 8.3.8.1 Ducts shall be constructed of galvanized steel or an equivalent corrosion-resistant material a material having equivalent corrosion resistance, strength and rigidity. Substantiation: This section can be interpreted as allowing flexible non metallic and flexible metallic ducts, both of which have poor flow characteristics which were probably not anticipated when this provision was put in the code. Flexible ducts are also subject to restrictions and collapse because they are not structurally comparable to steel ducts. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-71 Log# 120 NFG-AAA Final Action: Reject(8.3.8.7) ________________________________________________________________Submitter : John Crouch , HPBA (Hearth, Patio & Barbecue Association)Recommendation: Revise text to read as follows:Exception: Direct Vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions. Substantiation: 8.3.8.7 The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air.Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions.10.5.8.2 The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air.Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions.Justification: The deletion clarifies that freestanding direct vent appliances also can be installed to use an existing chimney to supply combustion air, for example, through a thimble penetration of the chimney. There is no difference in technology or performance between a freestanding appliance and a fireplace insert that would provide a rationale for different treatment of the two appliance types with regard to combustion air from the chimney. Committee Meeting Action: Reject Committee Statement: The committee added the exception to 8.3.8.7 in the 2002 edition based on appliances that were listed. The committee is not aware of the need to expand this, and sees problems in doing so. The committee invites manufacturers who believe that this change is needed to provide specific substantiation.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-72 Log# CP129 NFG-AAA Final Action: Accept(8.5) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Add new text to read as follows: 8.5 Equipment in Attics. 8.5.1 Attic Access. An attic in which an appliance is installed shall be accessible through an opening and passageway at least as large as the largest component of the appliance, not less than 22 in. by 30 in. (560 mm x 760 mm). 8.5.1.1 Where the height of the passageway is less than 6 ft, the distance from the passageway access the to appliance shall not exceed 20 ft (6.1 m) measured along the center line of the passageway . 8.5.1.2 The passageway shall be unobstructed and shall have solid flooring not less than 24 in. (610 mm) wide from the entrance opening to the appliance. 8.5.2 Work Platform. A level working platform not less than 30 in. (760 mm) by 30 in. shall be provided in front of the service side of the appliance.

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Report on Proposals — Copyright, NFPA NFPA 54 8.5.3 Lighting and Convenience Outlet. A permanent 120-volt receptacle outlet and a lighting fixture shall be installed near the appliance. The switch controlling the lighting fixture shall be located at the entrance to the passageway.Substantiation: A new section is added to provide provisions for the installation of appliances in attics. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-73 Log# 122 NFG-AAA Final Action: Reject(8.5.1) ________________________________________________________________Submitter : Jon Nisja , Northcentral Regional Fire Code Development CommitteeRecommendation: Revise to read: 8.5.1 Connecting Gas Equipment. Gas utilization equipment shall be connected to the building piping in compliance with 8.5.4 through 8.5.6 by one of the following:(1) Rigid metallic pipe and fittings.(2) Semirigid metallic tubing and metallic fittings. Aluminum alloy tubing shall not be used in exterior locations.(3) A listed connector in compliance with ANSI Z21.24, Standard for Connectors for Gas Appliances. The connector shall be used in accordance with the terms of its listing and shall be in the same room as the equipment. Only one connector shall be used per appliance.(4) CSST where installed in accordance with the manufacturerʼs instructions.(5) Listed nonmetallic gas hose connectors in accordance with 8.5.2.(6) Gas-fired food service (commercial cooking) equipment listed for use with casters or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment that can be moved, shall be secured to prevent accidental damage or disconnection of the gas line and connected in accordance with the connector manufacturerʼs installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances.(7) In 8.5.1(2), 8.5.1(3), and 8.5.1(5), the connector or tubing shall be installed so as to be protected against physical and thermal damage. Aluminum alloy tubing and connectors shall be coated to protect against external corrosion where they are in contact with masonry, plaster, or insulation or are subject to repeated wettings by such liquids as water (except rain water), detergents, or sewage. Substantiation: This change was submitted in the May 2004 cycle to NFPA 96. The 96 committee rejected the proposal stating that this issue was covered in NFPA 54. Since portable gas appliances are specifically addressed it would be logical to insert this language in 54. Restaurants and other establishments frequently use gas fire appliances that have a degree of portability increasing the potential for an employee to inadvertently moving the appliance and severing the gas line.Committee Meeting Action: Reject Committee Statement: The subject is covered in 9.12.6.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-74 Log# CP126 NFG-AAA Final Action: Accept(8.5.1) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 8.5.1(7) In 8.5.1(2), (3), (4), and (5) the connector or tubing shall be installed so as to be protected against physical and thermal damage. Aluminum alloy tubing and connectors shall be coated to protect against external corrosion where they are in contact with masonry, plaster, or insulation or are subject to repeated wettings by such liquids as water (except rain water), detergents, or sewage. Substantiation: CSST is added to help ensure that it is protected as other tubing products are required too.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-75 Log# 73 NFG-AAA Final Action: Accept in Principle(8.5.1, 8.5.2, 8.5.4, 3.3.12 Appliance Connector (New), 3.3.166 Connecting Gas Equipment) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: 3.3.12 Appliance Connector. A length of semirigid tubing with end fittings, listed nonmetallic gas hose, or other suitable flexible connector as required by the code, specifically designed to connect gas equipment to the piping system. 3.3.166 Piping System. All piping, valves, and fittings from the outlet of the point of delivery from the supplier to the outlets point of connection of the gas equipment shutoff valves or appliance connector. 8.5.1 Connecting Gas Equipment.

(3) Listed appliance connector in compliance with ANSI Z21.24, Connectors for Gas Appliances. The connector shall be used in accordance with the terms of their listing, and shall be in the same room as the equipment. Only one connector shall be used per appliance.8.5.2 Maximum Length and Number of Unlisted Appliance Connectors. Unlisted appliance connectors shall be a maximum of 6 ft. Only one connector shall be used per appliance. 8.5.4 Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, located and installed in accordance with one of the following: 1. W w ithin 6 ft (1.8 m) of the equipment it serves. 2. At the manifold and installed in each gas line that serves an individual appliance located within 50 feet of the manifold. The valves shall be readily accessible and permanently identified.3. In the fireplace if listed for such use.4. In an area remote from a gas fireplace, room heater installed in a fireplace, or decorative appliance for installation in vented fireplace, where such valves are readily accessible, permanently identified and shall serve no other equipment. Where a n appliance connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this the valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. Substantiation: To permit alternative locations for manual shutoff valves in gas piping systems, define appliance connectors, and ensure that the codeʼs gas piping installation and pressure testing requirements are applied up to all parts of the gas piping system no matter where the valve is installed. Alternative valve locations: Manual shutoff valves are installed to permit the servicing of individual gas equipment without the need to shut down the entire system. Therefore, the remote installation of equipment shutoff valves serving individual appliances should be allowed if they are readily accessible and identified. The proposed revisions provide safe and reasonable installation requirements for shutoff valves that are only used when servicing or replacing the equipment. There is little safety need for these valves to be located within 6 feet of a gas log or gas fireplace or when a manifold piping system is installed. The requirement for gas fireplace and gas logs are similar to those include in the International Fuel Gas Code which is widely adopted in the US.Appliance Connector/Piping System Definitions: The new definition for appliance connector and the revision to the piping system definition are meant ensure that the length of pipe and tubing between the shutoff valve and appliance (in manifolded systems or where the valve is remotely located for gas fireplace equipment) are subject to all of the codeʼs piping installation and testing requirements.Clarification of valves located before appliance connectors: To clarify that shutoff valves are to be installed upstream from listed and other flexible appliance connectors. Since fixed appliances are often connected directly to the gas piping by the same gas piping material that is used through out the system (i.e. black steel, copper, CSST), the code requirement to locate the valve before the “connector” makes little sense for these appliances. One 6 ft Unlisted Connector Length: In making the above revisions, a loophole is created that raises the possibility that two or more unlisted connectors may be joined together as the piping system or appliance connector. The new requirement is meant to allow only one unlisted connector per appliance (same as for listed) and to limit overall connector length to 6 feet. Committee Meeting Action: Accept in Principle 8.5.4 Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, installed within 6 ft (1.8 m) of the equipment it serves. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use.8.5.4 Equipment Shutoff Valves and Connections. Each gas appliance connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet. Such valves and convenience outlets shall serve a single appliance.8.5.4.1 Shutoff Valve Location. The shutoff valve shall be located within 6 feet of the appliance it serves. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from the valve to permit removal of appliance controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use.Exception No. 1. Shutoff valves serving appliances installed in vented fireplaces and ventless firebox enclosures are not required to be located within a specified distance of the appliance where such valves are readily accessible and permanently identified. The piping from the shutoff valve to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6.Exception No. 2. Where installed at a manifold, valves shall be located within 50 feet of the appliance served and shall be readily accessible and permanently identified. The piping from the manifold to within 6 feet of the appliance shall

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Report on Proposals — Copyright, NFPA NFPA 54 be designed, sized and installed in accordance with Chapters 5 and 6.8.5.4.2 Shutoff Valve Location for Non-Manifolded Systems shall be located within 6 feet of the appliance it serves. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from the valve to permit removal of appliance controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use.8.5.4.3 Shutoff Valve Location for Manifolded Systems shall be located within 50 feet of the appliance served and shall be readily accessible and permanently identified. The piping from the manifold to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6.8.5.4.4 Shutoff valves serving appliances installed in vented fireplaces and ventless firebox enclosures shall not have a minimum required to the appliance where such valves are readily accessible and permanently identified. 8.5.4.5 The piping from the shutoff valve to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6.Committee Statement: Accepted with revisions. To permit alternative locations for equipment shutoff valves in gas piping systems and ensure that the codeʼs gas piping installation and pressure testing requirements are applied up to all parts of the gas piping system no matter where the valve is installed. The revision would only add in two exceptions, one for fireplace appliances and one for manifolds. The 50 feet requirement was based on successful experience in Canada. The proposed definition was not needed with the revisions that were made. Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because the proposal is indeterminate. The Committee Meeting Action includes two different sections identified as 8.5.4.1, which makes the proposal equivocal.

_______________________________________________________________54-75a Log# CP115 NFG-AAA Final Action: Accept(8.5.1(4)) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise 8.5.1 (4) to read:(4) CSST where installed in accordance with the manufacturerʼs instructions. CSST shall not pass through an appliance housing, cabinet, or casing. CSST shall connect only to appliances that are fixed in place. Substantiation: The proposed actions of 54-76 (Log #9) and 54-77 (Log #134) are combined into one action. CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions.The concept of the Proposal in 54-76 (Log #9) is accepted and is revised to allow options for installers.Committee Meeting Action: Accept Revise 8.5.1 (4) to read:(4) CSST where installed in accordance with the manufacturerʼs instructions. CSST shall not pass through an appliance housing, cabinet, or casing. Committee Statement: The proposed actions of 54-76 (Log #9) and 54-77 (Log #134) are combined into one action. CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions .The concept of the proposal in 54-76 (Log #9) is accepted and is revised to allow options for insallers. Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Negative: 0 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, RIBBS

_______________________________________________________________54-76 Log# 9 NFG-AAA Final Action: Accept in Principle(8.5.1(4)) ________________________________________________________________2002: The comment proposes something that could not be properly handled within the time frame for processing the report. Submitter : Hall Virgil , Carrier Corporation / Rep. GAMA-An Appliance and Equipment Manufacturers AssociationRecommendation: (4) CSST where installed in accordance with the manufacturerʼs instructions. Installer shall extend rigid metallic pipe 2 inches minimum outside an appliance casing to connect to CSST to prevent chafing of CSST on an edge of the gas connector opening in an appliance casing and to prevent exposure to high temperatures. Substantiation: CSST should not pass through a gas connector opening in an

appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions . Committee Meeting Action: Accept in Principle Committee Statement: See 54-75a (Log #CP115).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-77 Log# 134 NFG-AAA Final Action: Reject(8.5.1(4)) ________________________________________________________________Submitter : Richard Sekerchak , Dormont Manufacturing CompanyRecommendation: Revise text to read as follows:8.5.1(4) CSST where installed in accordance with the manufacturerʼs instructions , CSST is not to be used with appliances that can be moved such as ranges and dryers nor with commercial cooking appliances. Substantiation: Clarify the requirement for the appropriate use of CSST and make the Code consistent with manufacturerʼs instructions.Also, this revision will make the Code requirement consistent with the requirements of ANSI Z21.24 and ANSI Z21.69.Committee Meeting Action: Reject Committee Statement: See Proposal 54-75a (Log #CP115).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-78 Log# 133 NFG-AAA Final Action: Accept in Principle(8.5.1(6)) ________________________________________________________________Submitter : Richard Sekerchak , Dormont Manufacturing CompanyRecommendation: Revise text to read as follows:8.5.1(6) All Gas-fired food service ( commercial cooking appliances (ref. 3.3.95 thru 3.3.101), equipped with either legs or casters, ) equipment listed for use with castors or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment that can be moved, shall be connected in accordance with the connector manufacturers ̓installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances. Substantiation: Regardless if appliances are on legs or casters, commercial cooking appliances are all moved at intervals of time for cleaning, maintenance, or repair. The intervals differ depending on the type of equipment and reason for the movement. However, during the movement, the connector can and does get pulled hard axially and pushed against the wall and appliance which can easily damage an un-reinforced gas connector. Therefore, we recommend that only movable appliance connectors be permitted in commercial cooking applications to gain the benefit of the extra reinforcement afforded by its design and features.This revision will make the Code requirement consistent with the requirements of ANSI Z21.69-latest edition.The addition of the reference will provide clarity for installers on what is considered food service equipment.Committee Meeting Action: Accept in Principle (6) Gas-fired food service (commercial cooking) equipment listed for use with casters or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment that can be moved, shall be connected in accordance with the connector manufacturerʼs installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances. 8.5.1.1 Commercial Cooking Appliances. Commercial cooking appliances that are moved for cleaning and sanitation purposes shall be connected in accordance with the connector manufacturerʼs installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances. Committee Statement: Accepted with revisions to clarify the use of a Z21.69 connector with all commercial cooking appliances that can be moved for the purpose of cleaning and sanitation. Counter appliances are now included since they are often moved which can result in damage to a non-Z21.69 connector. Movable large equipment is not required to use a Z21.69 connector since this equipment is less often moved and will be connected in accordance with the requirements of 8.5.1(1) through (7).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-79 Log# 131 NFG-AAA Final Action: Accept in Part(8.5.1(8)) ________________________________________________________________Submitter : Richard Sekerchak , Dormont Manufacturing CompanyRecommendation: Add text to read as follows:8.5.1 (8) A listed connector in compliance with ANSI Z21.75. Standard for Connectors for Outdoor Gas Appliances and Manufactured Homes. The connector shall be used in accordance with the terms of its listing and shall be

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Report on Proposals — Copyright, NFPA NFPA 54 completely exposed. Only one connector shall be used per appliance. Substantiation: Add Code coverage for gas connectors used with appliances that are located outdoors and specify the appropriate consensus standard for the listing.Committee Meeting Action: Accept in Part Add text to read as follows:8.5.1 (4) A listed connector in compliance with ANSI Z21.75, Standard for Connectors for Outdoor Gas Appliances and Manufactured Homes. Only one connector shall be used per appliance. Renumber remaining items. Committee Statement: The remainder is not accepted because it is not needed to accomplish the intent of the proposal. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-80 Log# 14 NFG-AAA Final Action: Accept in Principle(8.5.4) ________________________________________________________________Submitter : Larry Krummert , Columbia Gas of PA - NISOURCE / Rep. Columbia Gas of PARecommendation: 8.5.4 Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, installed within 6 ft (1.8 m) of the equipment it serves. Each gas utilization equipment shall have a valve serving the appliance only. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. Substantiation: According to 8.5.4 you could have a valve that controls 2 appliances but still fits into 8.5.4. Diagram provided.Committee Meeting Action: Accept in Principle 8.5.4 Equipment Shutoff Valves and Connections. Each gas appliance connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet . Appliance shutoff valves and convenience outlets shall serve a single appliance only and shall be installed in accordance with the following: 8.5.4.1 The shutoff valve shall be located within 6 feet of the appliance it serves. (1) Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from the valve to permit removal of appliance controls. (2) Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. 8.5.4.2 Shutoff valves serving appliances installed in vented fireplaces and ventless firebox enclosures shall not be required to be located within 6 feet of the appliance where such valves are readily accessible and permanently identified. The piping from the shutoff valve to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6. 8.5.4.3 Where installed at a manifold, the appliance shutoff valve shall be located within 50 feet of the appliance served and shall be readily accessible and permanently identified. The piping from the manifold to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6.Committee Statement: The intent of the proposal is accomplished with an editorial revision.Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because the new and deleted text is not identified by underlining and strikeouts.When proposals are sent out for public review and comment, the reviewers should be provided with proposals that are easily analyzed and understood.

_______________________________________________________________54-81 Log# 31 NFG-AAA Final Action: Reject(8.5.4) ________________________________________________________________Submitter : Edward Angelone , KeySpan Energy Delivery / Rep. New York State Gas Utilization CommitteeRecommendation: 8.5.4 Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, located and installed in accordance with one of the following: 1. installed W w ithin 6 ft. (1.8m) of the equipment it serves and readily accessible.2. A permanently identified valve in the basement below the appliance or in an adjoining room not to exceed 50 feet from the manifold of the appliance. The valve shall be readily accessible.In addition the appliance valve should be a hand valve/ball valve that can be easily operated by the customer in an emergency without the need for a

wrench. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. Substantiation: To permit alternate locations for manual shut off valves in gas piping systems that are readily accessible and identified. A shutoff valve behind a cooking appliance is not readily accessible.Committee Meeting Action: Reject Committee Statement: Proposal 54-75 (Log #73) was accepted in principle and would include new requirements for alternative locations of shut off valves. There was no substantiation provided to require a hand operated ball valve in manifold systems. The size of piping systems, which include the valve, is to be accomplished in accordance with Chapter 12, which includes consideration of pressures losses due to the installed valve type. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-82 Log# 132 NFG-AAA Final Action: Accept(8.5.5) ________________________________________________________________Submitter : Richard Sekerchak , Dormont Manufacturing CompanyRecommendation: Revise text to read as follows:8.5.5 Quick-disconnect devices used to connect equipment to the building piping shall be listed to ANSI Z21.41, Quick-Disconnect Devices for use with Gas Fuel Appliances. Where installed indoors, an approved manual shutoff valve with a non-displaceable valve member shall be installed upstream of the quick-disconnect device. Substantiation: Make the Code requirement consistent with the other requirements such as 8.5.1(3) and 8.5.1(6) to assure that adequate devices are being used.Also, this revision will make the Code requirement consistent with the requirements of ASNI Z21.69.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-83 Log# 86 NFG-AAA Final Action: Reject(8.5.7) ________________________________________________________________Submitter : Gregg Gress , International Code CouncilRecommendation: 8.5.7 Sediment Trap. Where a sediment trap is not incorporated as a part of the gas utilization equipment, a sediment trap shall be installed as close to the inlet of the equipment as practical at the time of equipment installation. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet as illustrated in Figure 8.5.7 or other device recognized as an effective sediment trap. Illuminating appliances, ranges, clothes dryers, decorative vented appli-ances for installation in vented fireplaces, gas fireplaces, and outdoor grills shall not be required to be so equipped. Substantiation: There is no valid reason to deprive some appliances of protection from debris in the piping system. It has been argued that ranges, dryers and decorative appliances are manually operated and thus, any malfunction caused by debris would be apparent. All of these appliances can be operated for long time periods unattended, some cycling on thermostats. Common sense dictates that all appliances benefit from the basic protection afforded by the simple inexpensive sediment trap.Committee Meeting Action: Reject Committee Statement: The committee believes that the exemptions are reasonable for appliances that are not automatically operated.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-84 Log# 136 NFG-AAA Final Action: Reject(8.5.7) ________________________________________________________________Submitter : James P. Brewer , Magic Sweep Corp. / Rep. National Chimney Sweep GuildRecommendation: Modify the second sentence of Section 8.5.7 as follows:The sediment trap shall be either a tee fitting with a minimum 3 inch long capped nipple in the bottom outlet arranged to change the direction of gas flow as illustrated in figure 8.5.7 or other device recognized as an effective sediment trap. Substantiation: Eliminates the reference to Figure 8.5.7 and clearly states the fundamental requirements of a sediment trap.Committee Meeting Action: Reject Committee Statement: The proposal is unenforceable. Manufacturers should not be placed in a position to prohibit add on devices.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

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Report on Proposals — Copyright, NFPA NFPA 54 _______________________________________________________________54-85 Log# 113 NFG-AAA Final Action: Accept(8.6.3) ________________________________________________________________Submitter : Robert S. Boiko , R. Boiko CorporationRecommendation: Revise text to read as follows:The electrical circuit employed for operating the automatic main gas control valve, automatic pilot, room temperature limit control, or other electrical devices used with gas utilization equipment shall be in accordance with the wiring diagrams supplied with the equipment certified or approved by the original equipment manufacturer. Substantiation: Ambiguity exists as currently written. Whoʼs diagrams? It is now very common to see after market energy devices, controllers, draft induced motors, sequencers, sensors, alarms and other components which may also be supplied with “diagrams”, but not checked for safety or compatibility by AGA or the original equipment manufacturer. There must be one responsible authority to assure equipment design function and integrity.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Negative: 2 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: SWIECICKI: I agree with Mr. Virgilʼs reasons.VIRGIL: I vote negative because the proposed revision does not remove ambiguity.The original equipment manufacturer could be the manufacturer of the “automatic gas control valve, automatic pilot, room temperature [thermostat], limit control, or other electrical devices” or could be the “appliance manufacturer”.The original text needs no revisions except to replace “the gas utilization equipment” with “appliances” and to replace “equipment” with “appliance” as follows:“8.6.3 Electrical Circuit. The electrical circuit employed for operating the automatic main gas-control valve, automatic pilot, room temperature thermostat, limit control, or other electrical devices used with an appliance the gas utilization equipment shall be in accordance with the wiring diagrams supplied with the appliance equipment. ”Certified or approved wiring diagrams are not needed because appliance standards require appliance manufacturers to include the following items with completed appliances: wiring diagrams and a list of replacement parts with the source where parts are available. These diagrams and lists normally continue to be available from the appliance manufacturer, in case the diagrams and lists supplied with the appliances are lost.The proposed text is unacceptable for public review and comment because it fails to identify deleted text (i.e., “...room temperature thermostat , limit control...”).

_______________________________________________________________54-86 Log# CP140 NFG-AAA Final Action: Accept(Chapter 9) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 9 Installation of Specific Equipment Appliances 9.1.1 Application. This Chapter is applicable primarily to nonindustrial-type gas utilization equipment appliances and installations and, unless specifically indicated, does not apply to industrial -type equipment appliances and installations. Listed gas utilization equipment appliances shall be installed in accordance with their listing and the manufacturers ̓instructions, or as elsewhere specified in this part as applicable to the equipment appliance . Unlisted equipment appliances shall be installed as specified in this Chapter as applicable to the equipment appliance . For additional information concerning particular gas equipment appliances and accessories, including industrial types, reference can be made to the standards listed in Chapter 14 and Annex L.9.1.2* Installation in Bedroom or Bathroom. Gas utilization equipment Appliances shall not be installed ...9.1.3 Room Size in Comparison Calculation. Where the room size in comparison with the size of the equipment appliance is to be calculated,...9.2 Air Conditioning Equipment Appliances (Gas-Fired Air Conditioners and Heat Pumps).9.2.1 Independent Gas Piping. Gas piping serving heating gas utilization equipment appliances shall be permitted to also serve cooling equipment appliances where the heating and cooling equipment appliances cannot be operated simultaneously. [See Section 5.4.]9.2.3 Clearances for Indoor Installation. The installation of air-conditioning equipment appliances shall comply with the following requirements: (1) Listed air conditioning equipment appliances installed in rooms that are large in comparison with the size of the equipment appliance shall be ...(2) Air-conditioning equipment appliances installed in rooms that are NOT large (such as alcoves and closets) in comparison with the size of the equipment appliance ...(3) Unlisted air-conditioning equipment appliances shall be installed ... above the equipment appliance and ...(4) Air-conditioning equipment appliances (listed and unlisted) installed in rooms that are large in comparison with the size of the equipment appliance

shall ... provided the combustible material or equipment appliance is protected ...(6) Listed air-conditioning equipment appliances shall have ...Table 9.2.3(a) : Revise first column and note as follows: Equipment Appliance IV Air Conditioning equipment appliances Note: See 9.2.3 for additional requirements for air-conditioning equipment appliances and ...9.2.4 Assembly and Installation. Air-conditioning equipment appliances shall be installed ... instructions. Unless the equipment appliance is listed ...9.2.5 Furnace Plenums and Air Ducts. A furnace plenum ... the air-conditioning equipment appliance shall be ... Where a furnace plenum is not supplied with the equipment appliance , any fabrication ... Where the air conditioner is ... the size of the equipment appliance , the air circulated ... casing of the equipment appliance and ...9.2.7 Switches in Electrical Supply Line. Means for interrupting the electrical supply to the air-conditioning equipment appliance and ...9.3.2.1 Listed central heating furnaces and ... the size of the equipment appliance shall ...9.3.2.2 Central heating furnaces and ... the size of the equipment appliance shall ...Figure 9.3.2.2(1) Extent Of Protection Necessary to Reduce Clearances from Gas Equipment Appliance or Vent Connectors.Notes: A equals the clearance with ... types of equipment appliances .9.3.2.3 Unlisted central heating furnaces and ... the size of the equipment appliance shall be ...9.3.2.4 Central heating furnaces and ... the size of the equipment appliance shall be ... the combustible material or equipment appliance is protected ...9.3.2.7 The clearance to this equipment appliance shall not ...9.10.2 Erection of Equipment Appliances . 9.10.6.2 Duct furnaces used in conjunction with a cooling equipment appliance shall be ...9.10.6.4 ... Air washers operating with chilled water that deliver air below the dew point of the ambient air at the duct furnace equipment are considered ...9.11.9 Seepage Pan. Where the excavation ... provided or the equipment appliance is sealed by the manufacturer to meet this condition. 9.12 Food Service Equipment Appliances , Floor-Mounted.9.12.1 Clearance for Listed Equipment Appliances . Listed floor-mounted food service equipment appliances , such as ..., unit broilers, gas-fired kettles, steam cookers, steam generators, ... Floor-mounted food service equipment appliances listed ... Equipment Appliances designed ...9.12.2 Clearance for Unlisted Equipment Appliances . Unlisted floor-mounted food service equipment appliances shall ... sides and rear of the equipment appliance and ... the front of the equipment appliance . Clearances for unlisted equipment appliances installed ... Clearances for unlisted equipment appliances installed ... 9.12.3.1 Listed floor-mounted food service equipment appliances that is are listed specifically ...9.12.3.2 Floor-mounted food service equipment appliances that is are not listed ...(1) Where the equipment appliance is set ... the base of the equipment appliance or where ...(2) Where the equipment appliance is set ... the base of the equipment appliance , it shall ... the floor under the equipment appliance is protected ... The preceding specified floor ... beyond the equipment appliance on all sides. (3) Where the equipment appliance is set ... the base of the equipment appliance , it shall ... the equipment appliance is protected ...(4) Where the equipment appliance does not have ... under the equipment appliance is protected ...9.12.4 Mounting on Noncombustible Floor. Listed floor-mounted food service equipment appliances that is are designed ...9.12.6 For Use with Casters. Floor-mounted equipment appliances with casters shall ... the movement of the equipment appliance to prevent ...9.12.7 Level Installation. Floor-mounted food service equipment appliances shall be installed level on a firm foundation. 9.12.8* Ventilation. Means shall be provided ... food service equipment appliance is installed to permit proper combustion of the gas. 9.13 Food Service Equipment Appliances , Counter9.16.5 Gas Appliance Pressure Regulators. Where a gas appliance pressure regulator ... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 9. Also see 54-2 (Log #CP133), 54-40 (Log #CP138), 54-64 (Log #CP139), and 54-101 (Log #CP141) for remaining revisions to chapters.The National Fuel Gas Code is sometimes inconsistent in the use of such terms as “gas utilization equipment,” “equipment,” “appliance,” “gas-burning devices,” “gas-fired appliances,” etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate “appliances” that consume gas from “equipment” and “systems” used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25

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Report on Proposals — Copyright, NFPA NFPA 54 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-87 Log# 80 NFG-AAA Final Action: Accept in Principle(Table 9.2.3(b)) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: Table 9.2.3(b) Reduction of Clearances with Specified Forms of Protection(3) 0.024 in. (24 gauge) sheet metal over 1 in. glass fiber or mineral wool batts reinforced with wire on rear face with ventilated air space(5) 0.024 in. (24 gauge) sheet metal with ventilated air space(6) 1/2 in. thick insulation board with ventilated air space(7) 0.024 in. (24 gauge) sheet metal with ventilated air space over 0.024 in. (24 gauge) sheet metal with ventilated air space(8) 1 in. glass fiber or mineral wool batts sandwiched between two sheets 0.024 in. (24 gauge) sheet metal with ventilated air space.Substantiation: “0.024” without a dimensional term “inch” appears to be meaningless. Also, most installers would request “24 gauge” when purchasing sheet metal to meet the code requirements. Since neither the installer nor the code official is likely to physically measure the sheet metal for conformance, “24 gauge” is more practical and usable. Committee Meeting Action: Accept in Principle Table 9.2.3(b) Reduction of Clearances with Specified Forms of Protection(3) 0.024 in. (nominal 24 gauge) sheet metal over 1 in. glass fiber or mineral wool batts reinforced with wire on rear face with ventilated air space(5) 0.024 in. (nominal 24 gauge) sheet metal with ventilated air space(6) 1/2 in. thick insulation board with ventilated air space(7) 0.024 in. (nominal 24 gauge) sheet metal with ventilated air space over 0.024 in. (nominal 24 gauge) sheet metal with ventilated air space(8) 1 in. glass fiber or mineral wool batts sandwiched between two sheets 0.024 in. (nominal 24 gauge) sheet metal with ventilated air space.Committee Statement: The term “nominal” is added before “24 gauge” to recognize the different gauge scales are used. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-88 Log# 124 NFG-AAA Final Action: Reject(9.3.1) ________________________________________________________________Submitter : Roger Rotundo , IAPMO / Rep. Committee on Uniform Mechanical CodeRecommendation: Revise text as follows to read as follows:9.3.1 Location. Central heating furnace and low-pressure boiler installations in bedrooms or bathrooms shall comply with one of the following:(1) Central heating furnaces and low pressure boilers shall be installed in a closet located in the bedroom or bathroom, the closet shall have a weather stripped solid door with a self closing device, and all combustion air shall be obtained from the outdoors.(2) Central heating furnaces and low pressure boilers shall be of the direct vent type. Substantiation: Industry has noted that doors are not maintained in a closed position by removing or defeating the door closer, There is no standard for what type of weather stripping is to be used and how it is to be maintained. The new existing section has been deleted in at least one state code. There is nothing in the current language to indicate the room can not be used for storage or other uses. The current language has only been in the standard for one cycle.Committee Meeting Action: Reject Committee Statement: The code requires the use of outdoor air for appliances installed in the closet. This will minimize the potential for inadequate combustion air and any potential for CO. There is no evidence that the code provision has caused problems. Also refer to Committee Action on 54-96 (Log #125). Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: Direct vent sealed chamber type heating equipment offers a higher level of protection in areas where people may be ill or sleeping. Bath exhaust systems could cause negative pressures in the bathroom and could cause back drafting.KOBEL: Since the TC meeting our research has revealed that there was no technical substantiation given when this requirement was added to the NFGC. The original substantiation provides reasons to reconsider this section for deletion. If this change is allowed to stand, I believe language should be added to define the requirements for a weather stripped door and a self closing device. Direct vent heating equipment offers a higher level of protection in areas where people may be ill or sleeping. Bath exhaust systems can cause negative pressures in the bathroom resulting in back drafting of toxic combustion products.RIBBS: Since the TC meeting, I have learned that there was not a true technical substantiation given for adding this requirement into the NFGC. Additionally I feel the original substantiation gives reasons to reconsider this section for deletion. Should the existing coverage continue I feel additional

language should be added to clarifying what is a weather stripped door and a self closing device. Additionally direct vent sealed chamber type heating equipment offers a higher level of protection in areas where people may be ill or sleeping. Bath exhaust systems could cause negative pressures in the bathroom and could cause back drafting.

_______________________________________________________________54-89 Log# 89 NFG-AAA Final Action: Reject(9.3.4) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: 9.3.4 Temperature- or Pressure-Limiting Devices. Steam and hot water boilers, respectively, shall be provided with approved automatic limiting devices for shutting down the burner(s) to prevent boiler steam pressure or boiler water temperature from exceeding the maximum allowable working pressure or temperature.Safety limit controls shall not be used as operating controls unless approved by the boiler manufacturer . Substantiation: Almost all residential steam boilers only have one pressure control, like the HWPA 404A, this control is a safety limit and operating control. Many small hot water boilers have only one aquastat.Committee Meeting Action: Reject Committee Statement: This subject is covered in the appliance standard. All listed residential boilers include both operating and safety controls. The safety control is the pressure limit while the operating control is the thermostat. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-90 Log# 12 NFG-AAA Final Action: Accept in Part(9.4.5.4) ________________________________________________________________Submitter : Jennifer S. Henderson , CSA America Inc.Recommendation: 9.4.5.4 Exhaust ducts for unlisted Type 2 clothes dryers shall be installed with a minimum clearance of 6 in. (150 mm) from adjacent combustible material. Where exhaust ducts for Type 2 clothes dryers are installed with reduced clearances, the adjacent combustible material shall be protected in accordance with Table 9.2.3(b). Exhaust ducts for listed Type 2 clothes dryers shall be installed with clearances not less than that shown on the marking plate and in the manufacturers ̓instructions. Substantiation: Listed Type 2 clothes dryers are tested to verify clearances to combustible materials including clearances from the exhaust ducts. These clearances are marked on the appliance and are noted in the installation instructions. Additionally, listed Type 2 clothes dryers are equipped with operating thermostats and limits to ensure that the exhaust temperatures are less than 250 F. Specifying a 6 inch clearance from single wall vent systems to combustible material on listed clothes dryers is overly restrictive.Committee Meeting Action: Accept in Part Revise 9.4.5.4 to read: 9.4.5.4 Exhaust ducts for unlisted Type 2 clothes dryers shall be installed with a minimum clearance of 6 in. (150 mm) from adjacent combustible material. Where exhaust ducts for Type 2 clothes dryers are installed with reduced clearances, the adjacent combustible material shall be protected in accordance with Table 9.2.3(b). Committee Statement: The requirement for listed appliances is redundant to 9.1.1. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-91 Log# CP130 NFG-AAA Final Action: Accept(9.9.3) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 9.9.3 Installation.(3) Recirculating direct gas-fired industrial air heaters shall be permitted to provide fresh air ventilation only for the amount that exceeds the minimum ventilation air specified on the heaterʼs rating plate to maintain the combustion level created by the heater in the space being served by the heater below 25 ppm for carbon monoxide, 3 ppm for nitrogen dioxide, and 5000 ppm for carbon dioxide. Where gas-powered fork trucks or other fossil fueled equipment are utilized in the conditioned space, additional ventilation requirements for the facility must be addressed separately. (4) Recirculating direct gas-fired industrial air heaters shall be provided with access for removal of burners; replacement of motors, controls, filters, and other working parts; and for adjustment and lubrication of parts requiring maintenance.Substantiation: Eliminate provisions that are included in the manufacturerʼs installation instructions. The code only allows listed products. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-92 Log# 75 NFG-AAA Final Action: Accept in Principle(9.9.3(3))

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Report on Proposals — Copyright, NFPA NFPA 54 ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: 9.9.3 Installation.(3) Recirculating direct gas-fired industrial air heaters shall be permitted to provide fresh air ventilation only for the amount that exceeds the minimum ventilation air specified on the heaterʼs rating plate to maintain the combustion level created by the heater in the space being served by the heater below 25 ppm for carbon monoxide, 3 ppm for nitrogen dioxide, and 5000 ppm for carbon dioxide . Where gas-powered fork trucks or other fossil fueled equipment are utilized in the conditioned space, additional ventilation requirements for the facility must be addressed separately.Substantiation: The local enforcing authority is not equipped for, nor is typically expected to, perform indoor air sampling and therefore the code provision is unenforceable.Committee Meeting Action: Accept in Principle Committee Statement: Refer to 54-91 (Log #CP130) which eliminates (3) in its entirety.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-93 Log# 71 NFG-AAA Final Action: Reject(9.15.2.2(3), 9.15.1.2(3)) ________________________________________________________________Submitter : Joseph A. Peluso Jr. , Commonwealth of Massachusetts / Rep. Massachusetts State Plumbing & Gas Fitters BoardRecommendation: 9.15.2.2 Vertical Clearance. Built-in top (or surface) cooking appliances shall have a vertical clearance above the cooking top of not less than 30 in. (760 mm) to combustible material or metal cabinets. A minimum clearance of 24 in. (610 mm) is permitted when one of the following is installed:(3) A listed cooking appliance or microwave oven is installed over a listed cooking appliance a minimum clearance of 24 in. (610 mm) shall be maintained and will conform to the terms of the upper applianceʼs listing and the manufacturerʼs instructions . Substantiation: Consistency in minimum 24 in. clearance requirement above cook tops.Committee Meeting Action: Reject Committee Statement: This is a fire safety issue, and the committee believes that the current text provides adequate fire protection. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-94 Log# 30 NFG-AAA Final Action: Reject(9.23, 9.6.1) ________________________________________________________________Submitter : Kevin K. Kearns , Peoples EnergyRecommendation: 9.6.1* Prohibited Installations. Decorative appliances for installation in vented fireplaces shall not be installed in bathrooms or bedrooms unless the appliance is listed and the bedroom or bathroom has the required volume in accordance with Section 8.3.2. Unvented gas fireplaces shall not be install in bathrooms or bedrooms. Refer to part 9.23 for details and exceptions. 9.23 Room Heaters and Unvented Gas Fireplaces 9.23.1* Prohibited Installations. Unvented room heaters a nd unvented gas fireplaces shall not be installed in bathrooms or bedrooms.9.23.2 Installations in Institutions. Room heaters and unvented gas fireplaces shall not be installed in the following occupancies:9.23.3 Clearance. A room heater a nd unvented gas fireplaces shall be placed so as not to cause a hazard to walls, floors, curtains, furniture, doors when open, and so on, and to the free movements of persons within the room. Room H h eaters a nd unvented gas fireplaces designed and marked “For use in noncombustible fireplace only” shall not be installed elsewhere. Listed room heaters a nd unvented gas fireplaces shall be installed in accordance with their listings and the manufacturers ̓instructions. In no case shall the clearances be such as to interfere with combustion air and accessibility. Unlisted room heaters a nd unvented gas fireplaces shall be installed with clearances from combustible material not less than the following:Substantiation: Currently, Peoples Energy and the City of Chicago utilize the rules for room heaters (2002 edition, page 54-53, Section 9.23) and apply them to ventless gas fireplaces.Committee Meeting Action: Reject Committee Statement: The proposal is well intentioned, but the subject is covered in the Code. All vent free fireplace type room heaters are design certified to ANSI Z21. 11.2. Unvented gas fireplaces and gas logs in bedrooms and bathrooms are not wall mounted and therefore are prohibited by 9.23.1.Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: I feel the proponentʼs code change adds clarity. It would be easy to argue that a listed unvented fireplace installed in the center of a bedroom or

bathroom wall met the requirements of exceptions 1 and 2.Here are some real facts: When burning natural gas if the air fuel mixture is properly set and there is good ventilation the byproducts are CO2 and water; harmless unless displacing too much oxygen. However the flame is blue and nearly invisible. This is a far from acceptable condition for a decretive appliance. These appliances are purposely set so the flames are out of adjustment which will produce CO. Also unvented room heaters can be effected by any number of conditions including altitude that can cause any of these appliances to produce CO.

_______________________________________________________________54-95 Log# 96 NFG-AAA Final Action: Reject(9.23, K.1.38, K.1.39, K.1.44) ________________________________________________________________Submitter : Roger Rotundo , IAPMORecommendation: 9.23 Room Heaters. 9.23.1* Prohibited Installations. Unvented room heaters shall not be installed , used, maintained or permitted to exist in any residential occupancy whether new or as a replacement installation in bathrooms or bedrooms . Exception No. 1: Where approved by the authority having jurisdiction, one listed wall-mounted unvented room heater equipped with an oxygen depletion safety shutoff system shall be permitted to be installed in a bathroom provided that the input rating shall not exceed 6,000 Btu/hr (1760 W/hr) and combustion and ventilation air is provided as specified in 9.1.2.Exception No. 2: Where approved by the authority having jurisdiction, one listed wall-mounted unvented room heater equipped with an oxygen depletion safety shutoff system shall be permitted to be installed in a bedroom provided that the input rating shall not exceed 10,000 Btu/hr (2930 W/hr) and combustion and ventilation air is provided as specified in 9.1.2.K.1.38 Room Heater, Unvented Circulator. A room heater designed to convert the energy in fuel gas to convected and radiant heat by direct mixing of air to be heated with the combustion products and excess air inside the jacket.K.1.39 Room Heater, Unvented Closed Front, Wall Heater. An unvented circulator having a closed front, for insertion in or attachment to a wall or partition.K.1.44 Room Heater, Wall Heater, Unvented Closed Front. An unvented circulator having a closed front, for in-sertion in or attachment to a wall or partition. Substantiation: The Uniform Plumbing Code (UPC) prohibits the installation of unvented room heaters. The proposed deletion of the unvented heater provisions and the addition of the prohibition language in the NFGC would coordinate the coverage between the UPC and NFGC.Additionally, 1. Proposal provides additional life safety requirements for residential occupancies. Consumer Product Safety Commission Report (Oct 2000) identifies 135 deaths associated with CO poisoning due to fuel heating systems.2. Current NFPA requirements recognize and limit these appliances for uses in bedrooms and bathrooms. In reality all areas of residential occupancies are used in the same manner. Example: Family rooms are used for guest sleeping, slumber parties, etc. Since NFPA recognizes that there is a life safety issue for bedrooms and bathrooms, these same life, safety issues apply to the entire residence.3. Any exception can be handled by the AHJ in accordance with NFPA 54, Section 1.4.4. The UNIFORM MECHANICAL CODE (UMC) prohibits the installation of unvented room heaters. The proposed deletion of the unvented heater provisions and the addition of the prohibition language in the NFGC would coordinate the coverage between the UMC and the NFGC.Annex K – These definitions should also be deleted because they are not applicable to the current code.Committee Meeting Action: Reject Committee Statement: The products are listed to an ANSI standard that addresses the safety of the appliances. Since 1980, unvented appliances have been required to have an oxygen depletion safety system (ODS). The 23-year history of vent free room heaters has shown the appliances to be safe. 15-million units have been installed in the 20 years since ODS has been required. The committee is advised that communication with CPSC staff reports that no deaths have been connected to vent free heaters equipped with an ODS. The National Fuel Gas Code has addressed the safe installation of unvented heaters for 30 years.Number Eligible to Vote: 30Ballot Results: Affirmative: 19 Negative: 5 Abstain: 1Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: I agree with the proponents comments and reasoning. Reports on CO poisoning and deaths from fuel burning appliances does not necessarily indicate whether or not the appliances were vented. I have entered several different rooms that contained unvented fireplaces or room heaters. Each time I experienced two things. First I noticed the smell and second I begin feeling lightheaded and with extended exposure I begin to get a headache. Although not scientific the effects are real.Here are some real facts: When burning natural gas if the air fuel mixture is properly set and there is good ventilation the byproducts are CO2 and water; harmless unless displacing too much oxygen. However the flame is blue and nearly invisible. This is a far from acceptable condition for a decretive

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Report on Proposals — Copyright, NFPA NFPA 54 appliance. These appliances are purposely set so the flames are out of adjustment which will produce CO. Also unvented room heaters can be effected by any number of conditions including altitude that can cause any of these appliances to produce CO.EDGAR: Having mixed feelings on the subject, especially in northern climate areas, and now reading Mr. Hagensenʼs reasons for voting negative on Proposal 54-95 (Log #96), Iʼd like to change my vote to negative.HAGENSEN: Although I understand some of the committeeʼs reasons for rejecting the proposal, Iʼm concerned about the proposed committee action.Inquiries made in Europe indicate that permanently installed unvented room heaters are not allowed in several European countries. They are not considered safe and the Oxygen Depletion Sensors (ODS) are not meeting safety requirements in terms of reliability. This concerns me as I have attended presentations by the vent-free fireplace manufacturers stating the ODS ̓are supplied by European companies, are completely safe and are used “all over Europe”. This does not appear to be true statements and indicate either lack of knowledge or an attempt to misguide.During a presentation the GAMA Vent-Free Product Division representative stated that there had been no deaths, lawsuits or anything else that could indicate any safety problems with unvented room heaters. However, a discussion with a fireplace manufacturer (not vent-free) indicated that manufacturers of unvented fireplaces have settled cases out of court to avoid unwanted exposure.Based on the information available I can not support the committeeʼs action and believe more information is needed. KOBEL: I agree with the proponents substantiation under items 2, 3 and 4. If these installations continue to be allowed I believe additional requirements must be added. These additional requirements should include dedicated makeup air and a hardwired carbon monoxide detector located in the room where the unvented heater is used.RIBBS: I stand on the original substantiation items 2, 3, 4. Additionally should these installations continue there should be additional provisions for dedicated makeup air and provisions for a hardwired carbon monoxide detector located in the room where the unvented heater is used.Explanation of Abstention: VIRGIL: I vote abstain because I do not have enough experience with unvented appliances.

_______________________________________________________________54-96 Log# 125 NFG-AAA Final Action: Reject(9.28.1.1) ________________________________________________________________Submitter : Terry Swisher , IAPMO / Rep. Committee on Uniform Plumbing CodeRecommendation: Revise text to read as follows:9.28.1.1 Water heater installations in bedrooms and bathrooms shall comply with one of the following:(1) Water heater shall be installed in a closet equipped with a weather stripped door with a self closing device, and all combustion air shall be obtained from the outdoors in accordance with 8.3.3.(2) Water heater shall be of the direct vent type. Substantiation: Industry has noted that doors are not maintained in a closed position by removing or defeating the door closer, There is no standard for what type of weather stripping is to be used and how it is to be maintained. The new existing section has been deleted in at least one state code. There is nothing in the current language to indicate the room can not be used for storage or other uses. The current language has only been in the standard for one cycle.Committee Meeting Action: Reject Committee Statement: The code requires the use of outdoor air for appliances installed in the closet. This will minimize the potential for inadequate combustion air and any potential for CO. The is no evidence that the code provision has caused problems. Also refer to 54-88 (Log #124).Number Eligible to Vote: 30Ballot Results: Affirmative: 22 Negative: 3 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: Bathroom exhaust fans can create negative pressures causing the water heater to back draft. Direct vent systems provide a higher level of safety.KOBEL: See my Explanation of Negative on 54-88 (Log #124).RIBBS: Since the TC meeting, I have learned that there was not a true technical substantiation given for adding this requirement into the NFGC. Additionally I feel the original substantiation gives reasons to reconsider this section for deletion. Should the existing coverage continue I feel additional language should be added to clarifying what is a weather stripped door and a self closing device. Additionally bathroom exhaust fans can create negative pressures causing the water heater to back draft. Direct vent systems provide a higher level of safety.

_______________________________________________________________54-97 Log# 90 NFG-AAA Final Action: Reject(9.28.1.1(1)) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: 9.28.1.1 Water heater installations in bedrooms and

bathrooms shall comply with one of the following: (1) Water heater shall be installed in a closet equipped with a weather-stripped door with a self-closing device, and all combustion and dilution air shall be obtained from the outdoors in accordance with 8.3.3.Substantiation: Besides combustion air power vent (non direct vent) water heaters mix a large amount of dilution air to lower vent temperature so PVC venting may be used. Committee Meeting Action: Reject Committee Statement: This is covered in 8.3.1.1.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-98 Log# 91 NFG-AAA Final Action: Reject(9.28.1.2) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: 9.28.1.2 Water heaters of other than the direct-vent type shall be located as close as practical to the chimney or gas vent or vented in accordance with manufacturerʼs instructions . Substantiation: New power vent water heaters use inside air for combustion but use dedicated PVC vents rather than connecting to a chimney or other gas vent.Committee Meeting Action: Reject Committee Statement: The paragraph is deleted in 54-99 (Log #CP117).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-99 Log# CP117 NFG-AAA Final Action: Accept(9.28.1.2) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete 9.28.1.2. 9.28.1.2 Water heaters of other than the direct-vent type shall be located as close as practical to the chimney or gas vent. Substantiation: The requirement is not enforceable.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-100 Log# CP116 NFG-AAA Final Action: Accept(9.28.7) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete section 9.28.7 and Figure 9.28.79.28.7 Circulating Tank Types. 9.28.7.1 Connection to Tank. The method of connecting the circulating water heater to the tank shall provide proper circulation of water through the heater and permit a safe and useful temperature of water to be drawn from the tank. [See Figure 9.28.7.1.] Figure 9.28.7.1 Typical gravity circulating tank-type installation. 9.28.7.2 Size of Water Circulating Piping. The size of the water circulating piping shall conform with the size of the water connections of the heater. 9.28.7.3 Sediment Drain. A suitable water valve or cock, through which sediment can be drawn off or the tank emp-tied, shall be installed at the bottom of the tank. Substantiation: This is a plumbing item and should not be in the National Fuel Gas CodeCommittee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-101 Log# CP141 NFG-AAA Final Action: Accept(Chapter 10) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 10 Venting of Equipment Appliances 10.1 General. This chapter recognizes that ... characteristics of the gas utilization equipment appliance . The operating characteristics of vented gas utilization equipment appliance can be categorized ... whether or not the equipment appliance generates flue ...10.2.1 Connection to Venting Systems. Except as permitted in 10.2.2 through 10.2.6, all gas utilization equipment appliances shall be connected to venting systems.10.2.2 Equipment Appliances Not Required to be Vented. The following equipment appliances shall not be required to be vented:(5) A single listed booster-type ... provided that the equipment appliance is installed ... any surface other than the equipment appliance .(10) Other equipment appliances listed for unvented use and not provided with flue collars(11) Specialized equipment appliances of limited input such as laboratory

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Report on Proposals — Copyright, NFPA NFPA 54 burners or gas lightsWhere any or all of this equipment these appliances in ... the remaining unvented equipment appliances does not exceed ... Where the calculation includes ... space in which the equipment appliance is installed ...10.2.3* Ventilating Hoods. Ventilating hoods ... used to vent gas utilization equipment appliances installed in ... to vent industrial equipment appliances , particularly ...10.2.4 Well-Ventilated Spaces. The operation of industrial gas utilization equipment appliances such that ...10.2.5 Direct-Vent Equipment Appliances . Listed direct-vent gas utilization equipment appliances shall be considered ...10.2.6 Equipment Appliances with Integral Vents. Gas utilization equipment Appliances incorporating integral venting means ...10.3.2 Equipment Appliance Draft Requirements. A venting system shall satisfy the draft requirements of the equipment appliance in accordance ...10.3.3 Design and Construction. Gas utilization equipment Appliances required to be ...10.3.4.2 Gas utilization equipment Appliances requiring venting shall ...10.3.4.4 Vent connectors serving equipment appliances vented by natural ...10.3.4.5 Where a mechanical draft system is ... requirements of the equipment appliance for safe performance.10.3.5.1 Ventilating hoods and ... used to vent gas utilization equipment appliances installed in ...10.3.5.2 Where automatically operated gas utilization equipment is appliances are vented through ... to properly vent the equipment appliance and when ...Table 10.4.1 Type of Venting System to Be Used. REVISE TABLE ENTRIES AS FOLLOWS: Gas Utilization Equipment Appliances Listed Category I equipment appliances Listed equipment appliances equipped with draft hoods Equipment Appliances listed or use with Type B gas vents Special Gas Vent listed for this equipment these appliances [10.4.3]Category II equipment appliances Category III equipment appliances Category IV equipment appliances As specified or furnished by manufacturers of listed equipment appliances [10.4.2, 10.4.3] Equipment Appliances that can be converted to use of solid fuelUnlisted combination gas and oil-burning equipment appliances Combination gas- and solid-fuel-burning equipment appliances Equipment Appliances listed for use with chimneys onlyUnlisted equipment appliances Listed combination gas and oil-burning equipment appliances Direct vent equipment appliances Equipment Appliances with integral vent10.4.2 Plastic Piping. Plastic piping used for venting equipment appliances listed for ...10.5.1.3* Exception: Masonry chimney flues ...use with listed gas appliances with draft hoods, Category I appliances, and other gas appliances ...10.5.2.1 A chimney for residential-type or low-heat gas utilization equipment appliances shall extend ...10.5.2.2 A chimney for medium-heat equipment appliances shall extend ...10.5.2.3 A chimney shall extend ... connected equipment appliance draft hood ...10.5.3.1 The effective area of a chimney venting system serving listed gas appliances ...10.5.3.2 Where an incinerator is vented by a chimney serving other gas utilization equipment appliances , the gas ...10.5.4.4 When inspection reveals that ... be suitable for the equipment appliances to be attached.10.5.5.1 Gas utilization equipment An appliance shall not be ...10.5.5.2 Where one chimney serves gas utilization equipment appliances and equipment burning liquid fuel burning appliances , the equipment appliances shall ... Where the gas utilization equipment appliance is automatically controlled, it shall be equipped with a safety shutoff device.10.5.8.2 Exception: Direct vent gas-fired appliances designed ...Figure 10.5.2.1 Typical Termination Locations for Chimneys and Single-Wall Metal Pipes Serving Residential-Type and Low-Heat Equipment Appliances .10.6.2 Gas Vent Termination. (b) Industrial gas utilization equipment appliances as provided in 10.2.4.(d) Equipment Appliances with integral vents as provided in 10.2.6.(2) A Type B or a Type L gas vent shall ... the highest connected equipment appliance draft hood ...10.6.3 Size of Gas Vents. Venting systems shall ... the gas vent and gas equipment appliance manufacturers ̓instructions.10.6.3.2 Category II, Category III, and Category IV Appliances. The sizing of gas vents for Category II, Category III, and Category IV gas utilization equipment appliances shall be in accordance with the equipment appliance manufacturers ̓instructions.10.6.4 Gas Vents Serving Equipment Appliances on More Than One Floor. 10.6.4.1 A single or common gas vent shall ... to vent Category I gas utilization equipment appliances located ...10.6.4.2 All gas utilization equipment appliances connected to ...10.6.4.3 The size of the connectors ... for gas utilization equipment appliances listed ...

(2) The size of the connector ... from its gas utilization equipment t he applianceʼs gas heat input rate and ...(3) The size of the common ... the total gas utilization equipment applianceʼs gas heat input rate entering ...10.7.2 Cold Climate. Uninsulated single-wall metal ... for venting gas utilization equipment appliances .10.7.3 Termination. (1) Single-wall metal pipe ... connected equipment appliance draft hood outlet or flue collar.10.7.4 Installation with Equipment Appliances Permitted by 10.4.1. 10.7.4.1 Single-wall metal pipe ... which the gas utilization equipment appliance is located ...Table 10.7.4.4 Clearances for Connectors Equipment Appliance : REVISE TABLE ENTRIES AS FOLLOWS: Listed equipment appliance with draft hoods and equipment appliance listed for use with Type B Gas VentsResidential and low-heat equipment appliances other than those aboveMedium-heat equipment appliance 10.7.5 Size of Single-Wall Metal Pipe. (1)* A venting system of a single-wall metal pipe ... and the gas equipment appliance manufacturerʼs instructions:10.9.1 Provision shall be made ... serving Category II and Category IV gas utilization equipment appliances and ...10.9.2 Where local experience indicates ... serving Category I and Category III gas utilization equipment appliances in accordance...10.10 Vent Connectors for Category I Gas Utilization Equipment Appliances .10.10.1 Where Required. A vent connector ... to connect gas utilization equipment an appliance to a gas vent, chimney, ... directly connected to the equipment appliance .10.10.2.1 A vent connector shall be made ... produced by the gas utilization equipment appliance and of ...10.10.2.2 Where the vent connector used for gas utilization equipment an appliance having a ...10.10.2.3 Where the vent connector used for gas utilization equipment an appliance having a ...10.10.2.4 (1) Vent Connectors not Installed in Attics, Crawl Spaces, or Other Unconditioned Areas. Vent connectors for listed gas appliances ...10.10.2.5 A vent connector for a low-heat equipment appliance shall be a factory-built chimney section or steel pipe having resistance to heat and corrosion equivalent to that for the appropriate galvanized pipe as specified in Table 10.10.2.5. Factory-built chimney sections shall be joined together in accordance with the chimney manufacturerʼs instructions.10.10.2.6 Vent connectors for medium-heat equipment appliances and ...(1) A steel vent connector for equipment an appliance with ...Table 10.10.2.6 Minimum Thickness for Steel Vent Connectors for Medium-Heat Equipment Appliances and Commercial and Industrial Incinerators10.10.3.1 A vent connector for gas utilization equipment an appliance with a single draft hood ...10.10.3.3 Where two or more gas appliances are ...10.10.3.5 Where two or more gas appliances are ...10.10.3.7 Where the size of a ... equal to the equipment appliance input, the size increase shall be made at the equipment appliance draft hood outlet.10.10.9.1 A vent connector shall be as short as practical and the gas utilization equipment appliance located as ...10.10.14.1 Exception: Vent connectors made ... serving listed equipment appliances with draft hoods and other equipment appliances listed for ...10.10.14.3 Vent connectors for medium-heat equipment appliances shall ...10.11 Vent Connectors for Category II, Category III, and Category IV Gas Utilization Equipment Appliances . 10.12.1 Equipment Appliances Requiring Draft Hoods. Vented gas utilization equipment appliances shall be installed with draft hoods.Exception: Dual oven-type ..., direct-vent equipment appliances , fan-assisted combustion system appliances, equipment appliances requiring ... appliances equipped ... and equipment appliances designed for forced venting.10.12.2 Installation. A draft hood supplied ... part of a listed vented gas utilization equipment appliance shall ... specified by the equipment appliance manufacturer. 10.12.2.1 If a draft hood is not supplied by the equipment appliance manufacturer ... as the equipment appliance flue collar. ...10.12.2.2 Where it is determined that ... recommendations of the equipment appliance manufacturer ...10.12.3 Draft Control Devices. Where a draft control device is part of the gas utilization equipment appliance or is supplied by the equipment appliance manufacturer, it shall ... In the absence of manufacturerʼs instructions ... the equipment appliance or as near to the equipment appliance as practical.10.12.4* Additional Devices. Gas utilization equipment Appliances (except incinerators) requiring ... equipped with a listed double-acting barometric draft regulator s installed and adjusted in accordance with the manufacturerʼs manufacturers ̓instructions.10.12.5 Location. Draft hoods and barometric draft regulators ... as the equipment appliance in such ...10.12.6 Positioning. Draft hoods and draft regulators ... by any part of the equipment appliance or adjacent construction. The equipment appliance and ...10.12.7 Clearance. A draft hood shall ... that of the equipment appliance it serves and ... Where a greater or lesser clearance is indicated on the equipment

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Report on Proposals — Copyright, NFPA NFPA 54 appliance label ...10.13 Manually Operated Dampers. A manually operated damper shall not be placed in any equipment appliance vent ...10.15 Obstructions. 5) Approved economizers... systems of equipment appliances not required ... provided the gas utilization equipment appliance manufacturerʼs ... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 10. Also see 54-2 (Log #CP133), 54-40 (Log #CP138), 54-64 (Log #CP139), and 54-86 (Log #CP140), for remaining revisions to chapters.The National Fuel Gas Code is sometimes inconsistent in the use of such terms as “gas utilization equipment,” “equipment,” “appliance,” “gas-burning devices,” “gas-fired appliances,” etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate “appliances” that consume gas from “equipment” and “systems” used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTComment on Affirmative VIRGIL: I vote affirmative, with editorial comments.Revise 10.2.6 by adding and “s” to “appliance” for consistency plural/singular tense.Revise Table 10.4.1, Listed equipment appliances -equipped with draft hood s for consistency plural/singular tense.Revise Table 10.4.1, Equipment Appliances -with integral vent s for consistency plural/singular tense.Revise 10.6.4.3(2) as follows, “... applianceʼs gas heat rate input rate and...” for correct terminology.Revise 10.6.4.3(3) as follows, “... applianceʼs gas heat rate input rate entering...” for correct terminology.

_______________________________________________________________54-101a Log# CP101 NFG-AAA Final Action: Accept(10.1, 10.2.5, 10.3.1, 10.6.2, 10.8.2, 10.8.4) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 10.1 Minimum Safe Performance. A venting system shall be designed and constructed so as to develop a positive flow adequate to remove convey flue or vent gases to the outdoors. 10.3.1 Minimum Safe Performance. A venting system shall be designed and constructed so as to develop a positive flow adequate to remove flue or vent gases to the outside atmosphere. Substantiation: 10.3.1 that is general in nature is relocated to the actual General section 10.1.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, AND RIBBS

_______________________________________________________________54-102 Log# 87 NFG-AAA Final Action: Reject(10.2.4) ________________________________________________________________Submitter : René M. Beliveau , City of Golden Building Division / Rep. Colorado Association of Plumbing and Mechanical OfficialsRecommendation: 10.2.4 Well-Ventilated Spaces. The operation of industrial gas utilization equipment such that its flue gases are dis-charged directly into a large and well-ventilated space shall be permitted. Substantiation: There is presently no definition of “large and well-ventilated space” within the code. This type of language serves no purpose other than to create confusion as to what appliances may or may not be vented into a space that may or may not be large enough to dilute products of combustion to a safe level. All appliances shall be vented according to their respective manufacturerʼs installation instructions. This code section suggests that a gas appliance requiring venting, in accordance with its listing, may not have to be vented if the installer or inspector “thinks” the space is “large and well-ventilated”. Not only would this situation violate the listings, it could become potentially dangerous to occupants. This section is inappropriate without providing a proven and tested methodology to actually calculate and logically arrive at such a determination. Committee Meeting Action: Reject Committee Statement: The term “large well ventilated spaces” applies only in industrial occupancies where ventilation exists. The paragraph is needed for industrial applications. The committee recognizes that material would be very useful for enforcers and invites comments. Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1

Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: COLLINGS: I agree with the proponent. Industrial applications do not necessarily mean all areas are large and well ventilated. I have seen office space built inside a warehouse and also a manufacturing plant complete with roof and roof top units for heating and a/c. Ventilation conditions change considerably from summer to winter. Summer doors are open and fans are running. In the winter the place is closed up to keep warm. Further there is quite a history of people in these types of work places being exposed to various chemical and environmental elements that later have been found to cause them considerable harm. Generally the employees are unaware of their exposure.

_______________________________________________________________54-103 Log# 35 NFG-AAA Final Action: Accept in Principle(10.2.5) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.2.5 Direct-Vent Equipment. Listed direct-vent gas utilization equipment shall be considered properly vented where installed in accordance with the terms of its listing, the manufacturerʼs instructions, and 10.8.1, 10.8.3 and 10.8.4 . Substantiation: With respect to the requirements of sections 10.8.1 and 10.8.4, there is no reason to treat direct-vent appliances differently. Sections 10.8.1 and 10.8.4 would apply to a category IV furnace installed without an outdoor air intake but would not apply when the same appliance is installed as a direct-vent appliance.Committee Meeting Action: Accept in Principle 10.2.5 Direct-Vent Equipment. Listed direct-vent gas utilization equipment shall be considered properly vented where installed in accordance with the terms of its listing, the manufacturerʼs instructions, and 10.8. Committee Statement: Accepted with a change to refer to all of 10.8. Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because Section 10.8.3 is the only section in 10.8 that applies to direct-vent appliances.Section 10.8.1 applies to a “mechanical draft venting system”, not a direct-vent appliance. See “3.3.237 Venting System, Mechanical Draft. A venting system designed to remove flue or vent gases by mechanical means, which may consist of an induced draft portion under nonpositive static pressure or a forced draft portion under positive static pressure.” A mechanical draft venting system is a venting system, not an appliance.Section 10.8.2 applies to a “mechanical draft venting system, of other than direct-vent type”.Section 10.8.4 applies to “Through-the-wall vents for Category II and Category IV appliances and noncategorized appliances...”. Categorization does not determine whether an appliance is or is not a direct-vent appliance. Section 10.8.4 does not apply to Category II and IV appliances that are not direct-vent appliances. So, 10.8.4 should not be added to the requirements for section 10.2.5 Direct-Vent Appliances. Section 10.8.4 will automatically apply to direct-vent appliances, if the appliances are Category II or Category IV appliances.The Committee Meeting Action does not properly identify deleted text (i.e., “10.8.3”) as it should.

_______________________________________________________________54-104 Log# 104 NFG-AAA Final Action: Reject(10.3.6) ________________________________________________________________NOTE: This Proposal appeared as Comment 54-110 (Log #5) which was held from the A2002 ROC on Proposal 54 -195 . Submitter : James P. Brewer , Magic Sweep Corp. / Rep. National Chimney Sweep GuildRecommendation: Revise text to read as follows: 10.3.6 Circulating Air Ducts and Furnace Plenums . No portion of a venting system shall extend into or pass through any circulating air duct or furnace plenum. 10.3.6.1 Above Ceiling Spaces . Where venting systems pass through a space above a ceiling used as a return air plenum it shall be installed according to one of the following methods: 1. With joints within the above ceiling return air plenum sealed air-tight in a manner approved by the manufacturer of the venting system. 2. The venting system shall be a listed positive-pressure venting system. 3. Non-air-tight venting systems installed with no joints or fittings located within the above ceiling return air plenum. Substantiation: This modification will provide guidance for the installation of venting systems in above ceiling return air plenums. The intent of the new requirements is to identify qualities or properties of venting systems that would allow them to be safely installed in above ceiling return air plenums. Committee Meeting Action: Reject Committee Statement: 54-105 (Log #108) is accepted.Number Eligible to Vote: 30Ballot Results: Affirmative: 25

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Report on Proposals — Copyright, NFPA NFPA 54 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-105 Log# 108 NFG-AAA Final Action: Accept in Principle(10.3.6.1 (New) ) ________________________________________________________________NOTE: This Proposal appeared as Comment 54-112 (Log # 122) which was held from the A2002 ROC on Proposal 54 -195. Submitter : David S. Johnston , Washington GasRecommendation: Revise text to read as follows:7.3.6 Circulating Air Ducts and Furnace Plenums. No portion of a venting system shall extend into or pass through any circulating air duct or furnace plenum. 7.3.6.1 Above-Ceiling Return Air Plenums. Where a venting system passes through an above-ceiling return air plenum or other non-ducted portion of a return air system, it shall conform to one of the following requirements:1) The venting system shall be a listed Special Gas Vent or other system serving a Category III or Category IV appliance, with joints fully sealed in accordance with the appliance and vent manufacturers ̓instructions.2) Sections of piping shall be inherently sealed and installed such that no fittings or joints between sections are installed in the above-ceiling plenum.3) The venting system shall be installed in an airtight conduit or enclosure with joints between the interior of the enclosure and the plenum sealed.Substantiation: The committee action to make a distinction between plenums in general and furnace plenums is welcome. The changes made to most sections of the code that use the word “plenum” by committee proposal 195 are also appropriate, since those sections clearly pertain to furnace plenums. However, the issue is more complex with section 7.3.6. This section previously excluded venting systems from all types of plenums, including those that are formed by portions of the building structure. This is consistent with the broad understanding of the word “plenum” and its application in many other codes. (For instance, “plenum cable” wiring conforms to special requirements applicable to installations in air circulation systems, including building-space plenums.)The committeeʼs revised wording for 7.3.6 is certainly correct, as vents should clearly not be installed in furnace plenums or ducts. However, a means is needed to preserve the restriction on venting systems in other types of air circulation systems, especially those designed to operate under negative pressure. Because the pressure that will be present in any plenum is not limited or regulated by the code, there is no way of ensuring that a return air system would not draw combustion products through any unsealed portions of a venting system.The proposed additional paragraph is designed to permit venting systems that can be expected to be well enough sealed to prevent leakage of combustion products even if exposed to depressurized surroundings. The proposal would also permit non-sealed venting systems to pass through plenums if separated from the atmosphere of the plenum by a conduit or other enclosure. These options should provide a commonsense means of permitting nearly any venting system to run through areas such as above-ceiling plenums without creating an undue risk of hazard.Committee Meeting Action: Accept in Principle Revise text to read as follows:10.3.6 Circulating Air Ducts , Above-Ceiling Air Handling Spaces, and Furnace Plenums. 10.3.6.1 No portion of a venting system shall extend into or pass through any circulating air duct or furnace plenum.10.3.6.2 Where a venting system passes through an above-ceiling air space or other non-ducted portion of an air handling system, it shall conform to one of the following requirements: 1) The venting system shall be a listed Special Gas Vent, other system serving a Category III or Category IV appliance, or other positive pressure vent, with joints sealed in accordance with the appliance or vent manufacturers ̓instructions. 2) The vent system shall be installed such that no fittings or joints between sections are installed in the above-ceiling space. 3) The venting system shall be installed in a conduit or enclosure with joints between the interior of the enclosure and the ceiling space sealed.Committee Statement: Accepted with editorial revisions for clarity.Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because:1. Special Gas Vents (high temperature plastic vent) or other systems serving Category III appliances with joints sealed in accordance with the appliance or vent manufacturerʼs instructions have failed (leaked) in field applications, which were the subject of vent system recalls by vent and appliance manufacturers. Vent joints could leak within an above-ceiling air space or other non-ducted portion of an air handling system.2. Vent systems installed such that no fittings or joints between sections have failed (leaked) in field applications, which were the subject of vent system recalls by vent and appliance manufacturers. Vent pipes that are installed with no fittings or joints within an above-ceiling air space or other non-ducted portion of an air handling system.

3. The third vent system installation option within above-ceiling spaces (venting system installed in an airtight conduit or enclosure with joints between the interior of the enclosure and the plenum sealed) is more acceptable because the circulating air is not directly exposed to the vent system.Comment on Affirmative EDGAR: Proposed 10.3.6.2-1 indicates:“The venting system shall be a listed Special Gas Vent, other system serving a Category III or Category IV appliance, or other positive pressure vent, with joints sealed in accordance with the appliance or vent manufacturers ̓instructions.”It is unclear whether the term “listed” applies to all or just the first (Special Gas Vent) option. It should apply to all.In order to confirm same and clarify this issue, it is recommended to insert the term “listed” at two additional places in this clause as follows:“The venting system shall be a listed Special Gas Vent, other system listed as appropriate for serving a Category III or Category IV appliance or other listed positive pressure vent, with joints sealed in accordance with the appliance or vent manufacturers ̓instructions.”This should reduce the likelihood of misinterpretation.

_______________________________________________________________54-106 Log# 34 NFG-AAA Final Action: Accept(10.5.4.2 Exception) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.5.4.2 Chimneys shall be lined in accordance with NFPA 211, Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances. Exception: Existing chimneys shall be permitted to have their use continued when an appliance is replaced by an appliance of similar type, input rating, and efficiency.Substantiation: Allowing a new appliance to connect to an unlined chimney is in conflict with the appliance listing. For example, Z21.47/CSA 2.3 requires the furnace installation instructions to state: “Venting (Category I) into an unlined masonry chimney is prohibited.” This is a clear violation of the appliance listing.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Negative: 2 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: ANGELONE: I feel the exception is needed and justified in applications where an existing residential water heater is connected to an existing unlined chimney and needs to be replaced. In most installations the water heater may be the only gas appliance connected to the chimney and operating without any problems. Requiring the chimney to be lined, “for the only reason” due to the elimination of the “exception” appears to be unreasonable. The new replacement water heater is generally an appliance of similar type, input and efficiency. Requiring a liner creates a financial hardship, technically not justified and the only alternative is a direct vented water heater or “electric” water heater. WOZNIAK: The substantiation, while valid for Category I furnaces, is not valid for water heaters, which are not categorized and have no provision for installation of the vent to a lined masonry chimney as part of its listing. Requiring a liner/reliner should be encouraged if inspection of the chimney determines that it is required, but the code should grant the AHJ the prerogative to require or not require a liner for a particular installation.

_______________________________________________________________54-107 Log# 121 NFG-AAA Final Action: Reject(10.5.8.2) ________________________________________________________________Submitter : John Crouch , HPBA (Hearth, Patio & Barbecue Association)Recommendation: Revise text to read as follows:8.3.8.7 The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air.Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions.10.5.8.2 The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air.Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions. Substantiation: The deletion clarifies that freestanding direct vent appliances also can be installed to use an existing chimney to supply combustion air, for example, through a thimble penetration of the chimney. There is no difference in technology or performance between a freestanding appliances and a fireplace insert that would provide a rationale for different treatment of the two appliances types with regard to combustion air from the chimney.Committee Meeting Action: Reject Committee Statement: The committee does not agree freestanding appliances

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_______________________________________________________________54-107a Log# CP100 NFG-AAA Final Action: Accept(10.6.1) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: (4) Type B or and Type L vents shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60-degree offset shall be permitted. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal distance of a vent plus the horizontal vent connector serving draft hood-equipped appliances shall not be greater than 75 percent of the vertical height of the vent. Substantiation: EditorialCommittee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, AND RIBBS

_______________________________________________________________54-108 Log# CP118 NFG-AAA Final Action: Accept(10.6.1, 10.6.2, Figure 10.6.2) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete 10.6.1(3) as follows:10.6.1 Application. The installation of gas vents shall comply with the following requirements: (3) A gas vent passing through a roof shall extend through the roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap. (1) and (2) are unchanged.Revise 10.6.2 as follows: 10.6.2 Gas Vent Termination. The termination of gas vents shall comply with the following requirements:(1) A gas vent shall terminate in accordance with one of the following: (a) Gas vents that are 12 inches or less in size and located not less than 8 feet from a vertical wall or similar obstruction, shall terminate above the roof in accordance with Figure 10.6.2 and Table 10.6.2. (b) Gas vents that are over 12 inches in size or are located less than 8 feet from a vertical wall or similar obstruction, shall terminate not less than 2 feet above the highest point where they pass through the roof and not less than 2 feet above any portion of a building within 10 feet horizontally. (2) thru (5) unchanged. (6) All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. (7) A gas vent shall terminate at least 3 ft (0.9 m) above any forced air inlet located within 10 ft (3.0 m). Revise the title of Figure 10.6.2 to read: Termination locations for gas vents with listed caps 12 in. (300 mm) or less in size at least 8 ft (2.4 m) from a vertical wall. Substantiation: Sections 10.6.1 and 10.6.2 are revised based on proposals log 74 and 27. The title of Figure 10.6.2 is revised.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTComment on Affirmative VIRGIL: I vote affirmative with an editorial comment.In Substantiation, replace the second “10.6.1” with “10.6.2”.

_______________________________________________________________54-109 Log# 27 NFG-AAA Final Action: Accept in Principle(10.6.1(3), 10.6.2(1)(a)) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.6.1 Application. The installation of gas vents shall comply with the following requirements: (3) A gas vent passing through a roof shall extend through the roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap. 10.6.2 Gas Vent Termination. The termination of gas vents shall comply with the following requirements:(1) A gas vent shall terminate in accordance with one of the following: (a) Above the roof surface with a listed cap or listed roof assembly. Gas vents 12 in. (300 mm) in size or smaller with listed caps shall be permitted to be terminated in accordance with Figure 10.6.2 and Table 10.6.2 provided they are at least 8 ft (2.4 m) from a vertical wall or similar obstruction. All other gas vents shall terminate not less than 2 ft (0.6 m) above the highest point where they pass through the roof and at least 2 ft (0.6 m) higher

than any portion of a building within 10 ft (3.0 m). Gas vents that are 12 inches or less in size and located not less than 8 feet from a vertical wall or similar obstruction, shall terminate above the roof in accordance with Figure 10.6.2 and Table 10.6.2. Gas vents that are over 12 inches in size and gas vents of any size that are located less than 8 feet from a vertical wall or similar obstruction, shall terminate not less than 2 feet above the highest point where they pass through the roof and not less than 2 feet above any portion of a building within 10 feet horizontally. All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. Substantiation: Table 10.6.2 is not an option to which a vent is “permitted to be terminated.” Table 10.6.2 specifies the minimum required termination height and is not intended to be optional. The bulk of the rewording serves to improve the language and clarify the intent. If an installer wants to install a 6 inch B-vent 2 feet above anything within 10 feet, they can still do so. Committee Meeting Action: Accept in Principle 10.6.1(1) and (2) are unchanged, delete 10.6.1(3) as follows:(3) A gas vent passing through a roof shall extend through the roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap. 10.6.2 Gas Vent Termination. The termination of gas vents shall comply with the following requirements:(1) A gas vent shall terminate in accordance with one of the following: (a) Gas vents that are 12 inches or less in size and located not less than 8 feet from a vertical wall or similar obstruction, shall terminate above the roof in accordance with Figure 10.6.2 and Table 10.6.2. (b) Gas vents that are over 12 inches in size or are located less than 8 feet from a vertical wall or similar obstruction, shall terminate not less than 2 feet above the highest point where they pass through the roof and not less than 2 feet above any portion of a building within 10 feet horizontally. (2) thru (5) unchanged (6) All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. Committee Statement: Refer to 54-108 (Log #CP118).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-110 Log# 24 NFG-AAA Final Action: Accept(10.6.1(4)) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: Delete 10.6.1(4) and add new 10.6.3.2.10.6.1 Application. The installation of gas vents shall comply with the following requirements: (4) Type B or Type L vents shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60-degree offset shall be permitted. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal distance of a vent plus the horizontal vent connector serving draft hood-equipped appliances shall not be greater than 75 percent of the vertical height of the vent.Exception: Systems designed and sized as provided in Chapter 13 or in accordance with other approved engineering methods. 10.6.3.2 Type B and Type L vents sized in accordance with item (3) or (4) of section 10.6.3.1 shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60-degree offset shall be permitted. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal distance of a vent plus the horizontal vent connector serving draft hood-equipped appliances shall not be greater than 75 percent of the vertical height of the vent. Substantiation: The current text appears to be applicable to all vents, despite the fact that Chapter 13 has entirely different and conflicting rules for offsets. The current text is intended for vents that are sized by the old rules still hanging on in items (3) and (4) of section 10.6.3.1, therefore, that is where this text belongs. The current text is only associated with items (3) and (4) of 10.6.3.1, not chapter 13 or engineered systems. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because 10.6.1(4) clearly applies to all Type B and Type L vents except vent “systems designed and sized as provided in Chapter 13 or in accordance with other approved engineering methods.” The Exception following 10.6.1(4) makes that clear. The only improvement that could be made is to revise the NFPA version of the NFGC such that the Exception is indented and moved up closer to 10.6.1(4) as was done in the ANSI version of the NFGC.See below for ANSI version:

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Section 10.6.1 covers Gas Vent Applications. Section 10.6.3 covers Size of Gas Vents, not gas vent applications. Vent offsets and total horizontal distance of a vent are Gas Vent Application concerns, not Gas Vent Sizing concerns.Do not move the text to 10.6.3. Make no changes to 10.6.1(4) or 10.6.3. _______________________________________________________________54-111 Log# 74 NFG-AAA Final Action: Accept in Principle(10.6.2) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: 10.6.2 Gas Vent Termination. The termination of gas vents shall comply with the following requirements:(1) A gas vent shall terminate in accordance with one of the following:(a) Above the roof surface with a listed cap or listed roof assembly. Gas vents 12 in. (300 mm) in size or smaller with listed caps shall be permitted to be terminated in accordance with Figure 10.6.2 and Table 10.6.2 provided they are at least 8 ft (2.4 m) from a vertical perpendicular wall or similar obstruction. All other gas vents shall terminate not less than 2 ft (0.6 m) above the highest point where they pass through the roof and at least 2 ft (0.6 m) higher than any portion of a building within 10 ft (3.0 m). A gas vent shall terminate at least 3 ft (0.9 m) above any forced air inlet located within 10 ft (3.0 m). Substantiation: The code in section 10.8.1 requires that mechanical draft vent terminate a least 3 ft above a forced air inlet located within 10 ft. Section 10.8.1 was revised during the 1999 code revision cycle by adding the words “mechanical draft” and thus no longer applies to natural draft vents. A search of the public records on the 1999 change indicate that the change was made to correlate with an editorial clean up of figure A.10.8 and there were no committee discussions nor was a technical reason provided to exclude natural draft vent terminations. Therefore, the current code does not contain any minimum distance requirements for these natural draft vents from roof top outdoor air intakes. The revision would restore the 1996 edition requirement and apply the current mechanical draft distance requirement to natural draft vents. The word “vertical” is being replaced by “perpendicular” to clarify that the 8 foot distance does not apply to high ratio pitch roofs such as those listed in the last few entries of Table 10.6.2.Committee Meeting Action: Accept in Principle Committee Statement: Refer to 54-108 (Log #CP118).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTComment on Affirmative VIRGIL: I vote affirmative with an editorial comment.In the Substantiation, revise as follows, “...3 ft above a and forced air inlet...”.

_______________________________________________________________54-112 Log# 77 NFG-AAA Final Action: Accept(Table 10.6.2) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: Revise Table 10.6.2 as follows:Substantiation: Editorial corrections. “Slope” is the correct term and “Over” is missing from the second line of the table. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-113 Log# 3 NFG-AAA Final Action: Reject(10.6.2(1). (New) ) ________________________________________________________________Submitter : Thomas Cole Recommendation: Insert new (b) and relabel (b) through (f) to (c) through (g). (b) Listed vent termination caps shall be designed to prevent the entry of water, insects, birds, small animals or other foreign material (ex. Bird Nests) that could cause blockage in the vent termination cap and or the vent system. Substantiation: The birds are entering the class B double wall vent systems and the flexible liners installed into masonry chimneys through UL approved termination caps. When the vent system is blocked with nesting material, the products of combustion canʼt be vented to the outside of the structure. The furnace will not shut off even if there is a pressure switch since the products of combustion just come out of the draft hood of the water heater. The UL approved caps need to be redesigned so that the birds can not enter the vent system . The UL idea of taking the cap off once a year to check for a nest is not a solution to the problem.Additional Substantiation Submitted: Two CPSC Incident reports, venting manufacturers literature, correspondence from UL, CPSC & homeowners, photos, newspaper articles, Committee Meeting Action: Reject Committee Statement: The subject of vent cap design is covered by UL 441. The committee recommends that UL be contacted, and reference the action on this proposal.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-114 Log# 69 NFG-AAA Final Action: Accept(10.6.4.1) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.6.4.1 A single or common gas vent shall be permitted in multistory installations to vent Category I gas utilization equipment located on more than one floor level, provided the venting system is designed and installed in accordance with approved engineering methods. Substantiation: If appliances on different floor levels are connected to the same vent it must be a common vent and cannot be a “single vent.” Single vents serve a single appliance, section 10.6.4.2 and 10.6.4.3 speak only of “common vents.”

Table 10.6.2 Roof Pitch Slope Heights

H (minimum)Roof pitch slope Ft mFlat to 6/12 1.0 0.30Over 6/12 to 7/12 1.25 0.38Over 7/12 to 8/17 1.5 0.46Over 8/12 to 9/12 2.0 0.61Over 9/12 to 10/12 2.5 0.76Over 10/12 to 11/12 3.25 0.99Over 11/12 to 12/12 4.0 1.22Over 12/12 to 14/12 5.0 1.52Over 14/12 to 16/12 6.0 1.83Over 16/12 to 18/12 7.0 2.13Over 18/12 to 20/12 7.5 2.27Over 20/12 to 21/12 8.0 2.44

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Report on Proposals — Copyright, NFPA NFPA 54 Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-115 Log# CP105 NFG-AAA Final Action: Accept(10.6.4.1) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:10.6.4.1 A single or common gas vent shall be permitted in multistory installations to vent Category I gas utilization equipment located on more than one floor level, provided the venting system is designed and installed in accordance with approved engineering methods. For the purpose of this section, crawl spaces, basements and attics shall be considered as floor levels. Substantiation: An attic and crawl space should be considered as a floor level in multistory venting system design. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-116 Log# 18 NFG-AAA Final Action: Accept(10.6.4.2) ________________________________________________________________Submitter : Kevin Croshaw , City of Logan / Rep. Utah Chapter of ICCRecommendation: 10.6.4.2 All gas utilization equipment connected to the common vent shall be located in rooms separated from habitable occupiable space. Each of these rooms shall have provisions for an adequate supply of combustion, ventilation, and dilution air that is not supplied from habitable occupiable space. [See Figure 10.6.4.2.] Substantiation: This change uses the same wording that is used in the International Mechanical Code section 801.19 for multistory venting. Habitable space is defined in the International Building Code section 202 (A space in a building for living, sleeping, eating or cooking. Bathrooms, toilet rooms, closets, halls, storage or utility spaces and similar areas are not considered habitable spaces.) It could be argued that the current wording would not require a separation from a hallway in a dwelling, because the hallway is not habitable space, or any number of other spaces that are not considered habitable spaces but are considered occupiable. An office is occupiable, but not considered habitable under the International Building Code.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-117 Log# 70 NFG-AAA Final Action: Reject(10.6.4.2) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.6.4.2 All gas utilization equipment connected to the common vent shall be located in rooms or spaces that are accessed only from the outdoors. separated from habitable space. Each of these rooms shall have provisions for an adequate supply of combustion, ventilation, and dilution air that is not supplied from habitable space. The gas utilization equipment in these rooms or spaces shall be provided with combustion air in accordance with section 8.3.3. [See Figure 10.6.4.2.] Substantiation: Habitable is defined in building codes as excluding bathrooms, toilet rooms, closets, halls, storage and utility spaces and similar areas. By this definition, appliances and the multistory venting system would be allowed in such spaces, thus circumventing the intended separation requirement of this section. Occupied spaces includes bathrooms, toilet rooms, halls, etc.Committee Meeting Action: Reject Committee Statement: The proposed change makes the Code significantly more restrictive with no substantiation.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-118 Log# 138 NFG-AAA Final Action: Accept in Principle(10.7.2) ________________________________________________________________Submitter : James P. Brewer , Magic Sweep Corp. / Rep. National Chimney Sweep GuildRecommendation: Revise text to read as follows:10.7.2 Cold Climate. Uninsulated single-wall metal pipe shall not be used outdoors in cold climates for venting gas utilization equipment in areas where the 99 percent winter design temperature is below 32 degrees fahrenheit. Substantiation: The current criteria “cold climates” is undefined and unenforceable. The proposed criteria of 32 degrees will prohibit single-wall pipe in most areas but still allow it in warm climates like Florida and California.Committee Meeting Action: Accept in Principle Revise text to read as follows:

1. Revise 10.7.2 to read:10.7.2 * Cold Climate. Uninsulated single-wall metal pipe shall not be used outdoors in cold climates for venting gas utilization equipment in regions where the 99 percent winter design temperature is below 32 degrees Fahrenheit. 2. Add a new A.10.7.2 to read: A.10.7.2 Data on winter design temperature can be found in Figure G.2.4 and the 1993 edition of the ASHRAE Handbook — Fundamentals.Committee Statement: Accepted with an editorial change.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-119 Log# 5 NFG-AAA Final Action: Reject(10.8.1, 10.8.1, 10.8.2, 10.8.3, 10.8.4, Figures A.10.8.1 & A.10.8.2) ________________________________________________________________2002: The comment proposed something that could not be properly handled within the time frame for processing the 2002 edition of NFPA 54, and was held for the 2005 edition. Submitter : Drew Smith , State Industries, Inc. / Rep. State Industries, Inc.Recommendation: Revise wording in 10.8.1, 10.8.2, 10.8.3 and 10.8.4 to agree with proposed revisions to new Figures A.10.8.1 and A.10.8.2 (log #4)Substantiation: The current Figure A.10.8 and stated clearances do not adequately reflect the three types of through-the-wall vented appliances available today in the field. These are (1) direct vent, gravity type, (2) power vent, and (3) power direct vent.Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on 54-151 (Log #4).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-120 Log# 16 NFG-AAA Final Action: Reject(10.9.2) ________________________________________________________________Submitter : Carl A. Longino , County of Greenville SC / Rep. MyselfRecommendation: 10.9.2 Where local experience indicates that condensation is a problem, provision shall be made to drain off and dispose of condensate from venting systems serving Category I and Category III gas utilization equipment in accordance with 10.8.4. An auxiliary drain pan shall be required for each condensing furnace where damage to any building component will occur as a result of stoppage in the condensate piping. Substantiation: Evaporators and cooling coils are no longer the only equipment that produce condensate. All condensing furnaces are equipped with exhaust fans with drain ports that require drains to be run to the outside. Most manufacturers of condensing furnaces recommend a pan under their equipment. However a recommendation is not enforceable. Furnace drains are equally subject to stoppage and obstructions as cooling or evaporator coils, produce the same condensate, and damage building components in the same way. Committee Meeting Action: Reject Committee Statement: No substantiation was provided that demonstrates that a problem exists. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-121 Log# 23 NFG-AAA Final Action: Accept(10.10.2.4(1)) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.10.2.4 Vent connectors for residential-type appliances shall comply with the following: (1) Vent Connectors not Installed in Attics, Crawl Spaces, or Other Unconditioned Areas. Vent connectors for listed gas appliances having draft hoods , and for appliances having draft hoods and equipped with listed conversion burners , and Category I appliances that are not installed in attics, crawl spaces, or other unconditioned areas shall be one of the following: Substantiation: The code is silent on materials for connectors for non draft hood-equipped appliances.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-122 Log# CP120 NFG-AAA Final Action: Accept(10.10.2.5) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise 10.10.2.5 to read:10.10.2.5 A vent connector for nonresidential low-heat equipment shall be a factory-built chimney section or steel pipe having resistance to heat and corrosion equivalent to that for the appropriate galvanized pipe as specified in Table 10.10.2.5. Factory-built chimney sections shall be joined together in accordance with the chimney manufacturerʼs instructions.

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Report on Proposals — Copyright, NFPA NFPA 54 Substantiation: Editorial revision for clarification.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-123 Log# CP121 NFG-AAA Final Action: Accept(10.10.9.2, 10.10.9.3) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise to read:10.10.9.2 Except as provided for in 10.10.3, t T he maximum horizontal length of a single-wall connector shall be 75 percent of the height of the chimney or vent, except for engineered systems and in accordance with Chapter 13. The maximum length of an individual connector serving multiple appliances, from the appliance outlet to the junction with the common vent or another connector, shall be 100 percent of the height of the chimney or vent. 10.10.9.3 Except as provided for in 10.10.3, t T he maximum horizontal length of a Type B double-wall connector shall be 100 percent of the height of the chimney or vent, except for engineered systems and in accordance with Chapter 13 . For a chimney or vent system serving multiple appliances, t T he maximum length of an individual connector serving multiple appliances , from the appliance outlet to the junction with the common vent or another connector, shall be 100 percent of the height of the chimney or vent. Substantiation: The paragraph is split as it covers different subjects. The * is deleted as it is not needed. The reference to 10.10.3 is deleted, and replaced with the subject of 10.10.3. The second sentence of each paragraph is revised editorially to not begin with “For”. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 24 Negative: 1 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: VIRGIL: I vote negative because a substantive change was made in the attempt to editorially not begin with “For”. The original text applied to “a chimney or vent system serving multiple appliances”. This erroneous change was made in two places.The text can be corrected in both places as follows, “an individual connector for a chimney or vent system serving multiple appliances”.In replacing the reference to 10.10.3, “approved engineering methods” was inappropriately replaced with “engineered systems”. Engineered systems must be approved by the authority having jurisdiction. Add “approved” to “engineered systems”.The proposed text exception would require engineered systems AND in accordance with Chapter 13. Section 10.10.3 requires EITHER method, not BOTH methods. Change “engineered systems” to “engineered systems or accordance with Chapter 13.”

_______________________________________________________________54-124 Log# 28 NFG-AAA Final Action: Accept in Part(10.10.14.1) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 10.10.14.1 A vent connector shall not pass through any ceiling, floor, or fire-resistance rated wall. A single-wall metal pipe connector shall not pass through any interior wall.Exception: Vent connectors made of listed Type B or Type L vent material and serving listed equipment with draft hoods and other equipment listed for use with Type B gas vents that pass through walls or partitions constructed of combustible material shall be installed with not less than the listed clearance to combustible material.Single-wall metal pipe connectors shall not pass through any wall, floor or ceiling except as permitted by sections 10.7.4.1 and 10.10.14.2. Penetrations of walls, floors and ceilings by vent connectors constructed of Type B or Type L vent material shall be protected as required by the building code. Substantiation: This section conflicts with the manufacturerʼs installation instructions for all major manufacturers of B-vent. The B-vent design manuals depict B-vent connectors passing through ceilings and joining with common vents in attic spaces. This may be necessary to increase connector rise. It also conflicts with section 10.10.2.3 which speaks of Type B and L vent connectors that pass through attics, meaning that they first had to pass through a ceiling to enter the attic. In cases where a B-vent is installed in a fire rated shaft, a connector must pass through a fire-rated wall in order to enter the shaft and connect to the common vent. A B-vent and a B-vent connector are identical in construction, therefore, there is no reason to treat them differently. If a B-vent can rise from an appliance up through a ceiling, why canʼt a B-vent connector do the same? The only difference is that one is called a “connector” and the other is simply called a B-vent. The exception is no longer needed since the revised main section would not prohibit type B and L vent connector penetrations. The current exception literally applies only to connectors through combustible walls and is silent on noncombustible walls. The exception is not actually an exception anyway because the main section does not prohibit double-wall pipe from penetrating non fire-rated walls. The clearance to combustible requirements of the

exception are redundant with section 10.10.5.The revised text consolidates the penetration provisions for single-wall pipe connectors and clarifies that double-wall connectors need no prohibition other than what is specified in the building codes, related to penetrations of building elements. Committee Meeting Action: Accept in Part 10.10.14.1 A vent connector shall not pass through any ceiling, floor, or fire-resistance rated wall. A single-wall metal pipe connector shall not pass through any interior wall. Exception: Vent connectors made of listed Type B or Type L vent material and serving listed equipment with draft hoods and other equipment listed for use with Type B gas vents that pass through walls or partitions constructed of combustible material shall be installed with not less than the listed clearance to combustible material. Single-wall metal pipe connectors shall not pass through any wall, floor or ceiling except as permitted by sections 10.7.4.1 and 10.10.14.2. Committee Statement: Reference to building codes is deleted as building codes always apply.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-125 Log# 22 NFG-AAA Final Action: Reject(10.10.14.2, 10.7.4.5 (New) ) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: Delete 10.10.14.2 and add new 10.7.4.5. 10.7.4.5 A single-wall metal pipe shall not pass through a combustible exterior wall unless guarded at the point of passage by a ventilated metal thimble not smaller than the following: (1) For listed appliances equipped with draft hoods and appliances listed for use with Type B gas vents, the thimble shall be a minimum of 4 in. (100 mm) larger in diameter than the single-wall metal pipe. Where there is a run of not less than 6 ft (1.8 m) of single-wall metal pipe in the open between the draft hood outlet and the thimble, the thimble shall be a minimum of 2 in. (50 mm) larger in diameter than the single-wall metal pipe.(2) For unlisted appliances having draft hoods, the thimble shall be a minimum of 6 in. (150 mm) larger in diameter than the single-wall metal pipe.(3) For residential and low-heat appliances, the thimble shall be a minimum of 12 in. (300 mm) larger in diameter than the single-wall metal pipe. Exception: In lieu of thimble protection, all combustible material in the wall shall be removed from the single-wall metal pipe a sufficient distance to provide the specified clearance from such single-wall metal pipe to combustible material. Any material used to close up such opening shall be noncombustible. 10.10.14.2 A vent connector made of a single-wall metal pipe shall not pass through a combustible exterior wall unless guarded at the point of passage by a ventilated metal thimble not smaller than the following: (1) For listed appliances equipped with draft hoods and appliances listed for use with Type B gas vents, the thimble shall be a minimum of 4 in. (100 mm) larger in diameter than the vent connector. Where there is a run of not less than 6 ft (1.8 m) of vent connector in the opening between the draft hood outlet and the thimble, the thimble shall be a minimum of 2 in. (50 mm) larger in diameter than the vent connector.(2) For unlisted appliances having draft hoods, the thimble shall be a minimum of 6 in. (150 mm) larger in diameter than the vent connector.(3) For residential and low-heat appliances, the thimble shall be a minimum of 12 in. (300 mm) larger in diameter than the vent connector. Exception: In lieu of thimble protection, all combustible material in the wall shall be removed from the vent connector a sufficient distance to provide the specified clearance from such vent connector to combustible material. Any material used to close up such opening shall be noncombustible. Substantiation: This section conflicts with the intent of sections 10.10.2.2 and 10.10.2.3. A single-wall connector that passes through an exterior wall will be in an unconditioned area (outdoors). The current text should be relocated with the “single-wall” text since this is where it is applicable. Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on 54-124 (Log #28).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-126 Log# CP142 NFG-AAA Final Action: Accept(Chapters 11, 12,13, Annex A, B, C, D, H, J, K and L) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 11 Procedures to Be Followed to Place Equipment Appliance in Operation.11.1.1* Adjusting Input. The input shall be adjusted to the proper rate in accordance with the equipment appliance manufacturers ̓manufacturerʼs ...11.1.2 High Altitude. Ratings of gas utilization equipment appliances are based ... at elevations above 2000 ft (600 m), equipment appliance ratings ...(1) At the rate of 4 percent ... sized equipment appliance .11.2* Primary Air Adjustment. The primary air for injection ... in accordance with the appliance manufacturers ̓instructions. ...

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Report on Proposals — Copyright, NFPA NFPA 54 11.3 Safety Shutoff Devices. Where a safety shutoff device is ... replaced with a new equipment device. 11.4 Automatic Ignition. Gas utilization equipment Appliances supplied with ...11.5 Protective Devices. All protective devices furnished with the gas utilization equipment appliance , such as ...11.6* Checking the Draft. Vent-connected gas utilization equipment appliances shall be ... Where the combustion products ... the draft hood, the equipment appliance shall ...11.7 Operating Instructions. Operating instructions shall ... near the equipment appliance for the use of the consumer.13.2.12 Vent Height. For multiple units of gas utilization equipment appliances all located on ...A.3.3.15 Approved. The American Gas Association ... installations, procedures, appliances, equipment, or materials; ... In determining the acceptability of installations, procedures, appliance, equipment, or materials, the ...A.3.3.15 Approved. The American Gas Association , American National Standards Institute, and the National Fire Protection Association ... procedures, appliances, equipment, or materials; ... procedures, appliances, equipment, or materials, ... compliance with AGA, ANSI, CSA or NFPA , or other appropriate ... The authority ... labeling practices [see Section 3.3.17] of an organization ... Additional information regarding the coordination of appliance design, construction, and maintenance can be found in Annex B. A.3.3.140 Listed. The means for identifying listed appliances and equipment may ... do not recognize appliances and equipment a listed unless it is also labeled. ...A.5.4.1 (1) Allowable loss in pressure [see 5.4.4] from point of delivery to equipment appliance .A.5.4. Where the ratings of the equipment appliances to be installed ...A.5.4.3 Gas Piping Size. For any gas piping system, for special gas utilization equipment appliances , or for conditions ....A.6.12.5.4 Additional interlocks might be necessary for safe operation of equipment appliances supplied by the gas-mixing machine.A.8.1.1 The American Gas Association, ... procedures, appliances, equipment, or materials ; nor do they approve or evaluate testing laboratories . In determining ... procedures, appliances, equipment, or materials, the authority having jurisdiction can may base acceptance on compliance with AGA, ANSI , CSA or NFPA, or other appropriate standards. ...The authority having jurisdiction can may also refer to ... product evaluations and is thus in a position to determine ... Additional information regarding the coordination of gas utilization equipment appliance design, ...A.8.3 Special Conditions Created by Mechanical Exhausting or Fireplaces. Operation of exhaust fans, ... installed gas utilization equipment appliances .A.9.12.8 Where exhaust fans are ... operation of the equipment appliance .A.10.6.3.1 (2) The gas equipment appliance manufacturerʼs instructions(3) The vent ing equipment system manufacturerʼs sizing instructions(4) Drawings, calculations, and specifications provided by the venti ng equipment system manufacturerCoordination of Gas Utilization Appliance and Equipment Design, Construction, and MaintenanceB.1.2 The person or agency planning an installation of gas appliances and equipment does the following:B.1.4 The gas appliance or equipment manufacturer or builder provides the following:(1) Design and construction of all gas appliances or equipment or assemblies shipped from its plant(2) Design and construction of all gas appliances or equipment fabricated, erected, or assembled by the gas appliances or equipment manufacturer or builder in the fieldB.1.5 The person or agency installing the gas appliances or equipment and the person or agency authorizing the installation of gas appliances or equipment (purchaser) jointly should do the following:(1) Select, erect, or assemble gas appliances and equipment, ...(4) Initially operate the gas appliances or equipment in a safe mannerB.2 Gas Appliance and Equipment Design and Construction Checklist.B.2.1 (1) Suitability of appliance and equipment for process requirementsB.2.4 (6) Arrangement of piping to provide accessibility for appliance and equipment adjustments ...B.2.5 ... Gas controls and electrical equipment systems should be selected ...B.3 Maintenance of Gas Appliances and Equipment.B.3.1 These recommendations are prepared for maintenance of gas appliances and equipment. Special types of appliances and equipment demand special attention.B.3.5.1 A necessary part of the gas appliance or equipment maintenance ...B.3.5.2 Gas combustion equipment systems , including blowers, ...B.3.7 A necessary part of the gas appliance or equipment maintenance is ...B.3.8 Standby or substitute fuel equipment and systems for gas appliances or equipment should ...C.1 General. (1) Allowable loss in pressure from point of delivery to equipment appliance For any gas piping system, or special gas utilization equipment appliance , or for conditions ...C.2.1 General. The quantity of gas to be provided ... from the manufacturerʼs Btu gas input Btu/hr rating of the equipment appliance that will be installed.

In case the ratings of the equipment appliances to be installed ...To obtain the cubic feet per hour of gas required, divide the total Btu /hr input of all equipment appliances by the average ...C.6 Use of Sizing Charts.(1) ... However, in some cases, certain combinations of utilization equipment appliances will not occur simultaneously ...(3) Determine the minimum pressure required at the inlet to the critical utilization equipment appliance . Usually, the critical item will be the piece of equipment appliance with the highest ...”(5) To use Figure C.6 (a) (low pressure applications), calculate the piping length from the inlet to the critical utilization equipment appliance . ...D.3 Testing for Leakage not Using a Meter(2) For Gas Systems Using Undiluted Liquefied Petroleum Gas: System Preparation for Propane. ... Accordingly, each individual equipment appliance shutoff valve ...D.4 When Leakage is Indicated. If the meter test hand moves or a pressure drop on the gauge is noted, all appliances and equipment or outlets supplied ...H.1 General ... Accordingly, in some cases, d... of the equipment appliance .J.1 Example of Combustion Combination Indoor and Outdoor Combustion Air Opening Design. Determine the required ... the following equipment appliance installation example.Example Installation: ... No additional indoor spaces can be used to help meet the equipment appliance combustion air needs.Solution (1) Determine the total available room volume:Equipment Appliance room volume: K.1.2 Automatic Damper Regulator. A mechanically or ... on combustion equipment appliances .K.1.26 Household Cooking Gas Appliance, Floor Supported Unit. K.1.31 Loads, Connected. Sum of the rated Btu/ hr gas input to individual gas utilization equipment appliances connected to a ...”K.1.35 Regulator, Gas Appliance, Adjustable. K.1.36 Regulator, Gas Appliance, Multistage. K.1.37 Regulator, Gas Appliance, Nonadjustable. L.1 This list of documents is included because they pertain to appliances , equipment, accessories, materials, and ...” Substantiation: Editorial, consistent terminology use. Editorial changes to Chapters 11 through Annex L. Also see 54-2 (Log #CP133), 54-40 (Log #CP138), 54-64 (Log #CP139), 54-86 (Log #CP140), and 54-101 (Log #CP141) for remaining revisions to chapters.The National Fuel Gas Code is sometimes inconsistent in the use of such terms as “gas utilization equipment,” “equipment,” “appliance,” “gas-burning devices,” “gas-fired appliances,” etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate “appliances” that consume gas from “equipment” and “systems” used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTComment on Affirmative VIRGIL: I vote affirmative with editorial comments.In A.3.3.15, revise as follows, “...American National Standards Institute, and National Fire Protection Association do does not approve,...”In K.1.31, revise as follows, “...rated Btu/ hr gas input...”.Add K.1.59 from the AGA version of NFGC to NFPA version of NFGC.In L.1, “Chapter 13” should be “Chapter 14” and “reference” should be “referenced”.

_______________________________________________________________54-127 Log# 139 NFG-AAA Final Action: Accept(11, Chapter 12, Chapter 13) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: Relocate Chapter 11 after Chapter 9.Relocate Chapter 12 after Chapter 5.Relocate Chapter 13 after Chapter 10.Substantiation: To improve the usability of the code. The proposed chapter relocations would group like subjects in logical order as follows: “Pipe Sizing” (Chapter 12) would follow “Gas Piping System Design, Materials, and Components” (Chapter 5), “Placing Equipment in Operation” (Chapter 11) would follow “Installation of Specific Equipment´(Chapter 9), “Sizing of Category I Venting Systems” (Chapter 13) would follow “Venting of Equipment” (Chapter 10).Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

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Report on Proposals — Copyright, NFPA NFPA 54 _______________________________________________________________54-128 Log# CP134 NFG-AAA Final Action: Accept(11.1.1, A.11.1.1) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 11Procedures to Be Followed to Place Equipment in Operation11.1 Adjusting the Burner Input. 11.1.1* Adjusting Input. The input shall be adjusted to the proper rate in accordance with the equipment manufacturers ̓instructions .The input rate can be adjusted by either changing the size of a fixed orifice, changing the adjustment of an adjustable orifice, or readjusting the applianceʼs gas pressure regulator outlet pressure (where a regulator is provided in the appliance ). Input rate can be determined by either:11.1.1 (1)* Checking burner input by using a gas meter.11.1.1 (2)* Checking burner input by using orifice pressure drop and orifice size. Overfiring shall be prohibited. [ See Table 11.1.1. ] 11.1.2 High Altitude. Gas input ratings Ratings of gas utilization equipment are based on sea level operation and shall not be changed for operation at elevations up to 2000 ft (600 m). For operation at elevations above 2000 ft (600 m), equipment input ratings shall be reduced in ac-cordance with one of the following methods:(1) At the rate of 4 percent for each 1000 ft (300 m) above sea level before selecting appropriately sized equipment.(2) As permitted by the authority having jurisdiction.(3) Listed appliances derated in accordance with the terms of the ir listing shall be permitted. 11.3 Safety Shutoff Devices. Where a safety shutoff device is provided, it shall be checked for proper operation and adjustment in accordance with the appliance manufacturerʼs instructions. Where the device does not func-tion properly to turn off the gas supply in the event of pilot outage or other improper operation , it shall be properly serviced or replaced with a new device equipment . DELETE IN ITS ENTIRELY: Table 11.1.1 A.11.1.1 Burner input shall be checked in accordance with the appliance manufacturerʼs installation instructions. If no appliance instructions are provided, burner input rate can be checked as follows:(1) Checking Burner Input Using a Meter (clocking). To check the Btu /hr input rate, the test hand on the gas meter should be timed for at least one revolution and the input determined from this timing. Test dials are generally marked ... are given in Table 11.1.1 Tables Table A.11.1.1a through A.11.1.1c. These tables are provided for specific gas pressures within the meters and give gas flow rate (corrected to standard conditions) in cubic feet of gas per hour. Standard temperature is 60°F, and standard pressure is 29.92 inches of mercury. Measure the time for at least one revolution of a dial. Look up the gas flow rate in Tables A.11.1.1a through A.11.1.1c.Gas flow rates can be calculated for meter pressures other than in these tables in the following manner.A pressure adjustment factor F should be determined for use in the gas input calculation for the gas pressure difference Delta-P between the meter inlet and the atmosphere. The gas supplier can provide the pressure at the meter inlet.The pressure adjustment factor F is calculated with the following formula. Tables A.11.1.1a through A.11.1.1c was were calculated with this formula.

F = (Delta-P+(B x 13.596)) / (29.92 x 13.596)

where: F is the pressure correction factor. Deltat-P is the meter inlet pressure (inches of water column). B is the barometric pressure, unadjusted to sea level (inches of mercury)

NOAA weather reports barometric pressure inches of mercury, adjusted to sea level. The sea level adjustment must be subtracted from the barometric pressure reported by NOAA weather. The local sea level adjustment can be obtained from NOAA.

EXAMPLE: NOAA reported barometric pressure to be 30.12 inches of mercury for a city at 250 feet elevation. The barometric pressure adjustment for 250 feet is 0.27 inches of mercury. Subtract the local sea level adjustment from the NOAA barometric pressure to get the unadjusted barometric pressure.

30.12 - 0.27 = 29.85

The gas flow rate Q is calculated with the following formula. Q = F x C where: Q is gas flow rate at standard conditions (ft 3 /hr) F is the pressure adjustment factor. C is the timed gas flow rate (ft 3 /hr)

The gas input rate I is calculated with the following formula.

I=Q x HHV

where: I is gas input rate (Btu/hr) Q is the gas flow rate at standard conditions (ft 3 /hr). HHV is the average Higher Heat Value of the gas at standard temperature and pressure conditions (Btu/ft 3 ), which can be obtained from the gas supplier.

Appliances can be seriously overfired, if the timed meter gas flow rate used to set input rate is not adjusted for meter pressure. At 2 psi meter pressure an appliance would be 13% overfired, if the gas flow rate is not adjusted for meter pressure.

(2) The fixed orifice size for each burner can be determined in accordance with Table F.1 for utility gases and Table F.2 for undiluted liquefied petroleum gases. Checking Burner Input by Using Orifice Pressure Drop and Orifice Size Not Using a Meter .

REVISE TABLE TITLES:Table F.4 Equivalent Orifice Sizes at High Altitudes (includes 4% input reduction for each 1000 ft above sea level )Table F.4 Equivalent Orifice Sizes at High Altitudes (includes 4% input reduction for each 1000 ft above sea level )(Continued)

See next page for tables

Substantiation: Provide guidance on two methods to adjust appliance input rate. If furnace gas input rate is set accurately by using orifice size and manifold pressure, the apparent input rate measured by clocking the utility gas meter will always be lower than the actual input rate, unless we account for pressure drop at the manifold (normally 3.5 iwc) plus the difference in pressure (presssure drop) between the manifold and the meter. The meter is uncompensated for the difference between meter gas pressure and barometric pressure. The higher pressure within the meter will result in more mass (higher density) per cubic foot of gas. The effect on clocked gas input rate due to higher gas pressure within the gas meter can be significant.ANSI Z21.47•CSA 2.3-2001, 1.27.3-b.9. requires a rating plate marking that states, “Minimum permissible gas supply pressure for purposes of input adjustment”, which we could mark as 4.5 iwc for natural gas. With the meter pressure equal to the minimum gas supply pressure of 4.5 iwc, the actual input will be 1.11% higher than the apparent clocked input rate. Any increase in meter pressure beyond 4.5 iwc will cause still greater overfiring. At 13.5 iwc meter pressure, the actual input will be 3.32% high. Some gas utilities are installing gas meters in the 2 psi service lines ahead of the service regulators, which will cause even greater overfiring unless the input measurement accounts for the pressure difference. If the meter pressure is 2 psi, the actual input would be 13.61% higher than the apparent clocked rate, unless the measurement accounts for the pressure difference.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTComment on Affirmative VIRGIL: I vote affirmative with editorial comments.Revise A.11.1.1(1) in three places as follows, “...Table s A.11.1.1 a through A.11.1.1c.” Revise A.11.1.1(1) as follows, “... was were calculated with this formula.”In the example,Indent the paragraphs starting with “NOAA”, “The gas flow...” and “The gas input...”. The lines that are already indented should be indented further than the three listed above. The line that starts with “HHV” should be indented under “HHV” after it wraps around to the next line.Revise A.11.1.1(2) by adding the following sentence to the first line, “The fixed orifice size for each burner can be determined in accordance with Table F.1 for utility gases and Table F.2 for undiluted liquefied petroleum gases.”

_______________________________________________________________54-129 Log# 114 NFG-AAA Final Action: Reject(11.3, 11.5) ________________________________________________________________Submitter : Robert S. Boiko , R. Boiko CorporationRecommendation: Revise text to read as follows:11.3 Safety Shutoff Devices. Where a safety shutoff device is provided, it shall be checked for proper operation and adjustment in accordance with the manufacturerʼs instructions. Where the device does not function properly to turn off the gas supply in the event of a pilot outage, or electronic ignition failure, it shall be properly serviced or replaced with new equipment. Any replacement parts required shall be approved by the original equipment

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Table A.11.1.1 Gas Flow Rate to Burnerin Cubic Feet per Hour

at Standard Temperature and Pressure

Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psiSeconds for One

Revolution

Size of Test Meter Dial1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3

10 183 366 732 1831 185 370 739 1849 205 409 818 204511 166 333 666 1665 168 336 672 1681 186 372 744 185912 153 305 610 1526 154 308 616 1541 170 341 682 170413 141 282 563 1408 142 284 569 1422 157 315 629 157314 131 262 523 1308 132 264 528 1320 146 292 584 146115 122 244 488 1221 123 246 493 1232 136 273 545 136316 114 229 458 1144 116 231 462 1155 128 256 511 127817 108 215 431 1077 109 217 435 1087 120 241 481 120318 102 203 407 1017 103 205 411 1027 114 227 454 113619 96 193 385 964 97 195 389 973 108 215 431 107620 92 183 366 915 92 185 370 924 102 205 409 102321 87 174 349 872 88 176 352 880 97 195 390 97422 83 166 333 832 84 168 336 840 93 186 372 93023 80 159 318 796 80 161 322 804 89 178 356 88924 76 153 305 763 77 154 308 770 85 170 341 85225 73 146 293 732 74 148 296 739 82 164 327 81826 70 141 282 704 71 142 284 711 79 157 315 78727 68 136 271 678 68 137 274 685 76 151 303 75728 65 131 262 654 66 132 264 660 73 146 292 73029 63 126 253 631 64 127 255 637 71 141 282 70530 61 122 244 610 62 123 246 616 68 136 273 68231 59 118 236 591 60 119 239 596 66 132 264 66032 57 114 229 572 58 116 231 578 64 128 256 63933 55 111 222 555 56 112 224 560 62 124 248 62034 54 108 215 539 54 109 217 544 60 120 241 60235 52 105 209 523 53 106 211 528 58 117 234 58436 51 102 203 509 51 103 205 514 57 114 227 56837 49 99 198 495 50 100 200 500 55 111 221 55338 48 96 193 482 49 97 195 486 54 108 215 53839 47 94 188 469 47 95 190 474 52 105 210 52440 46 92 183 458 46 92 185 462 51 102 205 51141 45 89 179 447 45 90 180 451 50 100 200 49942 44 87 174 436 44 88 176 440 49 97 195 48743 43 85 170 426 43 86 172 430 48 95 190 47644 42 83 166 416 42 84 168 420 46 93 186 46545 41 81 163 407 41 82 164 411 45 91 182 45446 40 80 159 398 40 80 161 402 44 89 178 44547 39 78 156 390 39 79 157 393 44 87 174 43548 38 76 153 381 39 77 154 385 43 85 170 42649 37 75 149 374 38 75 151 377 42 83 167 41750 37 73 146 366 37 74 148 370 41 82 164 409

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Table A.11.1.1 Gas Flow Rate to Burnerin Cubic Feet per Hour

at Standard Temperature and Pressure (Continued)

Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psiSeconds for One

Revolution

Size of Test Meter Dial1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3

51 36 72 144 359 36 72 145 362 40 80 160 40152 35 70 141 352 36 71 142 356 39 79 157 39353 35 69 138 345 35 70 140 349 39 77 154 38654 34 68 136 339 34 68 137 342 38 76 151 37955 33 67 133 333 34 67 134 336 37 74 149 37256 33 65 131 327 33 66 132 330 37 73 146 36557 32 64 128 321 32 65 130 324 36 72 144 35958 32 63 126 316 32 64 127 319 35 71 141 35359 31 62 124 310 31 63 125 313 35 69 139 34760 31 61 122 305 31 62 123 308 34 68 136 34162 30 59 118 295 30 60 119 298 33 66 132 33064 29 57 114 286 29 58 116 289 32 64 128 32066 28 55 111 277 28 56 112 280 31 62 124 31068 27 54 108 269 27 54 109 272 30 60 120 30170 26 52 105 262 26 53 106 264 29 58 117 29272 25 51 102 254 26 51 103 257 28 57 114 28474 25 49 99 247 25 50 100 250 28 55 111 27676 24 48 96 241 24 49 97 243 27 54 108 26978 23 47 94 235 24 47 95 237 26 52 105 26280 23 46 92 229 23 46 92 231 26 51 102 25682 22 45 89 223 23 45 90 225 25 50 100 24984 22 44 87 218 22 44 88 220 24 49 97 24386 21 43 85 213 21 43 86 215 24 48 95 23888 21 42 83 208 21 42 84 210 23 46 93 23290 20 41 81 203 21 41 82 205 23 45 91 22794 19 39 78 195 20 39 79 197 22 44 87 21898 19 37 75 187 19 38 75 189 21 42 83 209100 18 37 73 183 18 37 74 185 20 41 82 205104 18 35 70 176 18 36 71 178 20 39 79 197108 17 34 68 170 17 34 68 171 19 38 76 189112 16 33 65 163 17 33 66 165 18 37 73 183116 16 32 63 158 16 32 64 159 18 35 71 176120 15 31 61 153 15 31 62 154 17 34 68 170130 14 28 56 141 14 28 57 142 16 31 63 157140 13 26 52 131 13 26 53 132 15 29 58 146150 12 24 49 122 12 25 49 123 14 27 55 136160 11 23 46 114 12 23 46 116 13 26 51 128170 11 22 43 108 11 22 43 109 12 24 48 120180 10 20 41 102 10 21 41 103 11 23 45 114

Note: To convert to Btu per hour, multiply the cubic feet per hour of gas by the Btu per cubic foot heating value of the gas used.

54-34

Report on Proposals — Copyright, NFPA NFPA 54 manufacturer of AGA as compatible for use in the control and operting circuit of that specific burning appliance. 11.5 Protective Devices. All protective devices furnished with the gas utilization equipment such as a limit control, fan control to blower, temperature and pressure relief valve, low water cutoof device, or manual operating features shall be checked for proper operation. Any replacement parts required shall be approved by the original equipment manufacturer or AGA as compatible for use in the control and operating circuit of that specific gas burning appliance. Substantiation: 11.3 as written does not describe electronic ignition via spark ignited pilots or direct spark ignition of burners. The new wording addresses this issue. 11.3 and 11.5 AGA and UL approval of appliances is based on specific components functioning in a precise manner. Replacing original factory parts with non-approved parts can be dangerous. Example, fast rise gas valve where designed for slow rise, undersized relief valve.Committee Meeting Action: Reject Committee Statement: Electronic ignition failure will result in no gas flow. There is no substantiation that a problem exists.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-130 Log# 15 NFG-AAA Final Action: Reject(12.1) ________________________________________________________________Submitter : Alfonso Fernandez-Fraga , Initial Engineers, P.A.Recommendation: 12.1 Pipe Sizing Methods.Where the pipe size is to be determined using any of the methods in 12.1.1 through 12.1.3, the diameter of each pipe segment shall be obtained from the pipe sizing tables in Section 12.2 or from the sizing equations in Section 12.3. [See calculation examples in Annex C]. For SI units, 1 ft3 = 0.028 m3 ; 1 ft = 0.305 m; 1 in. w.c. = 0.249 kPa; 1 psi = 6.894 kPa; 1000 Btu/hr = 0.293 kW. Linear interpolation is permitted for pipe sizing tables where the initial pressure is less than 1.5 psi. Substantiation: It is my understanding that linear interpolation is permitted for tables that reflect calculations for pressures less than 1.5 psig. Because Annex C item C3(f) indicates “choose the next larger figure below in the column,” the authorities having jurisdiction have taken this to mean that linear interpolation is not acceptable. Informal Interpretation by Paul Cabot dated October 8, 2002Committee Meeting Action: Reject Committee Statement: It is the intent of the committee to allow interpolation. Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-131 Log# 99 NFG-AAA Final Action: Accept in Principle(Table 12.1,12.-2,3,4,5,6,7,8,9,10,11,12,13,14,15,19,20,22,23,24,25,26,27,33; 3.3.149) ________________________________________________________________Submitter : Terry Swisher , IAPMORecommendation: Revise tables as follows:

See Tables on pages 35 through 55.

Substantiation: The Uniform Plumbing Code (UPC) Technical Committee requests the following revisions:1. The NFGC steel and copper gas piping tables should be expanded to longer lengths (up to 2000 feet) to make them more usable for UPC users and will allow their extraction into the UPC. 2. All steel and copper tables should use the following pipe length increments: 10 ft between 0-100ft, 25 ft between 100-200ft, 50ft between 200-1000ft, 100ft between 1000-2000ft. These increments should enable most users to directly use the tables without the need for interpolation. 3. Merge tables 12.1 & 12.5, 12.2 &12.6. The two merged tables will then list all of the pipe sizes for low pressure schedule 40 steel natural gas systems up to 2000 feet.4. Pipe capacities for sizes 1/4, 3/8 and 3-1/2 inch in the schedule 40 steel tables are not usable since these sizes are not available. These columns should be deleted where they appear in the tables. The minimum connecter pipe size for most appliances is 1/2 inch.5. By expanding the tables, some smaller diameter pipe size capacities fall below 10,000 Btu. Since this low capacity would not be useful for gas pipe design, a “NR” (Not Recommended) should replace all table capacities 10,000 Btu and below. A NR definition is also being proposed. 6. The low pressure natural gas tables should be labeled so the inlet pressure title block reads “0.5 psi*” with a footnote that indicates that the table capacities are valid for all inlet pressures below 2 psi with the same pressure drop. This change would make the table labeling consistent with the terminology understood and used by most installers and code officials. 7. Delete Table 12.33 for polyethylene plastic tubing since the material does not have consensus product standard.Committee Meeting Action: Accept in Principle Accept the proposal with the following revisions.

1. Revise the inlet pressure to “2.0 psi or less” in all low pressure tables, and delete the footnote.2. Replace “NR” where used in all tables with “NA”. Add a footnote “NA means a flow of less than 10 cfh” in all natural gas tables, and “NA means a flow of less than 10,000 btu/hr” in all propane tables.3. Provide 3 significant digits and no decimals in all table entries.4. Eliminate 2 1/2 inch copper tube size columns in all copper tables. Replace 1 5/8 and 2 1/8 ACR headings with “-”. 5. Do not delete Table 12.336. Revise Tables 12.19, 12.20, 12.31, 12.32 and 12.33 and extend the pipe lengths to 2,000 ft and make other revisions consistent with the other tables.

See revised tables on pages 56-87

Committee Statement: The concept of tables with longer lengths and other revisions is accepted. Tables 12.5 and 12.6 are deleted as they are combined in the revised Tables 12.1 and 12.2Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-132 Log# 126 NFG-AAA Final Action: Accept in Principle in Part(Table 12.4 (New) ) ________________________________________________________________Submitter : Terry Swisher , IAPMO / Rep. Committee on Uniform Plumbing CodeRecommendation: Add UPC Table 12-9 Natural Gas, Schedule 40, 3 psi with 1.5 psi pressure drop as a new table in the NFGC.

See tables on pages 88 and 89Substantiation: The Uniform Plumbing Code (UPC) contains pipe-sizing table for natural gas, schedule 40, 3 psi with 1.5 psi pressure drop. By adding this new table, the NFGC will be more usable and would better coordinate coverage between the UPC and NFGC.Committee Meeting Action: Accept in Principle in Part Add a new Table 12-4 with a 3 psi inlet and 2 psi drop, which has been revised per the tables accepted in 54-131 (Log #99).Insert Table 12-4 (Revised by Committee).Committee Statement: The revised table will be consistent with the tables approved in 54-131 (Log #99). The committee believes that a 2 psi drop is more realistic for this table.The metric table is not included as it is not needed. Metric conversions are provided.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-133 Log# 101 NFG-AAA Final Action: Accept in Principle(Table 12.14, 12.- 15, 16, 17, 18, 28, 29, 30) ________________________________________________________________Submitter : Robert Torbin , Foster-Miller, Inc.Recommendation: Update of existing tables to include two new CSST EHD sizes. The new EHD sizesinclude 48 and 60.

See tables on pages 90 through 92Substantiation: Occasionally, new CSST sizes are needed as manufacturers submit new products to testing labs for certification. Per the requirements of ANSI LC-1, there shall be two EHD sizes for each nominal size of CSST. Thus a second line is needed for 1.5-in and a second size is needed for 2-inch.Committee Meeting Action: Accept in Principle The tables are accepted and revised to limit all value to 3 significant digits and to show no decimal values.See tables on pages 90 through 92 The revisions in these tables are in addition to the changes made in proposal 54-131 (Log #99).Committee Statement: The tables are revised to be consistent with those accepted in 54-131 (Log #99).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-134 Log# 117 NFG-AAA Final Action: Reject(12.14, 12.18) ________________________________________________________________Submitter : Richard Powell , Ward Manufacturing Inc.Recommendation: Add nominal sizes to columns along with EHD values for CSST tables.Substantiation: Users do not understand the correlation between CSST nominal tubing sizes and EHD values. This has led some users to oversize systems.

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3.3.149 NR. Piping configuration is not recommended due to capacity of 10,000 Btu or less.

Table 12.1 Schedule 40 Metallic PipeGas Natural

Inlet pressure 0.50 psi or lessPressure Drop 0.3 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/43/8

1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.364 0.493 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 32 72 132 278 520 1,050 1,600 3,050 4,800 8,500 17,50020 22 49 92 190 350 730 1,100 2,100 3,300 5,900 12,00030 18 40 73 152 285 590 890 1,650 2,700 4,700 9,70040 15 34 63 130 245 500 760 1,450 2,300 4,100 8,30050 14 30 56 115 215 440 670 1,270 2,000 3,600 7,40060 12 27 50 105 195 400 610 1,150 1,850 3,250 6,80070 11 25 46 96 180 370 560 1,050 1,700 3,000 6,20080 11 23 43 90 170 350 530 990 1,600 2,800 5,80090 10 22 40 84 160 320 490 930 1,500 2,600 5,400

100 9 21 38 79 150 305 460 870 1,400 2,500 5,100125 8 18 34 72 130 275 410 780 1,250 2,200 4,500150 8 17 31 64 120 250 380 710 1,130 2,000 4,100175 7 15 28 59 110 225 350 650 1,050 1,850 3,800200 6 14 26 55 100 210 320 610 980 1,700 3,500

Table 12.2 Schedule 40 Metallic PipeGas Natural

Inlet pressure 0.50 psi or lessPressure Drop 0.5 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/43/8

1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.364 0.493 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 43 95 175 360 680 1,400 2,100 3,950 6,300 11,000 23,00020 29 65 120 250 465 950 1,460 2,750 4,350 7,700 15,80030 24 52 97 200 375 770 1,180 2,200 3,520 6,250 12,80040 20 45 82 170 320 660 990 1,900 3,000 5,300 10,90050 18 40 73 151 285 580 900 1,680 2,650 4,750 9,70060 16 36 66 138 260 530 810 1,520 2,400 4,300 8,80070 15 33 61 125 240 490 750 1,400 2,250 3,900 8,10080 14 31 57 118 220 460 690 1,300 2,050 3,700 7,50090 13 29 53 110 205 430 650 1,220 1,950 3,450 7,200

100 12 27 50 103 195 400 620 1,150 1,850 3,250 6,700125 11 24 44 93 175 360 550 1,020 1,650 2,950 6,000150 10 22 40 84 160 325 500 950 1,500 2,650 5,500175 9 20 37 77 145 300 460 850 1,370 2,450 5,000200 8 19 35 72 135 280 430 800 1,280 2,280 4,600

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Table 12.5 Schedule 40 Metallic PipeGas Natural

Inlet pressure 1.0 psi or lessPressure Drop 0.3 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1 11/4 11/2 2 21/2 3 31/2 4 5 6 8 10 12

Actual ID 1.049 1.380 1.610 2.067 2.469 3.068 3.548 4.026 5.047 6.065 7.981 10.020 11.938

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

50 215 442 662 1,275 2,033 3,594 5,262 7,330 13,261 21,472 44,118 80,130 126,855

100 148 304 455 877 1,397 2,470 3,616 5,038 9,114 14,758 30,322 55,073 87,187

150 119 244 366 704 1,122 1,983 2,904 4,046 7,319 11,851 24,350 44,225 70,014

200 102 209 313 602 960 1,698 2,485 3,462 6,264 10,143 20,840 37,851 59,923

250 90 185 277 534 851 1,505 2,203 3,069 5,552 8,990 18,470 33,547 53,109

300 82 168 251 484 771 1,363 1,996 2,780 5,030 8,145 16,735 30,396 48,120

400 70 143 215 414 660 1,167 1,708 2,380 4,305 6,971 14,323 26,015 41,185

500 62 127 191 367 585 1,034 1,514 2,109 3,816 6,178 12,694 23,056 36,501

1,000 43 87 131 252 402 711 1,041 1,450 2,623 4,246 8,725 15,847 25,087

1,500 34 70 105 203 323 571 836 1,164 2,106 3,410 7,006 12,725 20,146

2,000 29 60 90 173 276 488 715 996 1,802 2,919 5,997 10,891 17,242

Table 12.6 Schedule 40 Metallic PipeGas Natural

Inlet pressure 1.0 psi or lessPressure Drop 0.5 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1 11/4 11/2 2 21/2 3 31/2 4 5 6 8 10 12

Actual ID 1.049 1.380 1.610 2.067 2.469 3.068 3.548 4.026 5.047 6.065 7.981 10.020 11.938

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

50 284 583 873 1,681 2,680 4,738 6,937 9,663 17,482 28,308 58,161 105,636 167,236

100 195 400 600 1,156 1,842 3,256 4,767 6,641 12,015 19,456 39,974 72,603 114,940

150 157 322 482 928 1,479 2,615 3,828 5,333 9,649 15,624 32,100 58,303 92,301

200 134 275 412 794 1,266 2,238 3,277 4,565 8,258 13,372 27,474 49,900 78,998

250 119 244 366 704 1,122 1,983 2,904 4,046 7,319 11,851 24,350 44,225 70,014

300 108 221 331 638 1,017 1,797 2,631 3,666 6,632 10,738 22,062 40,071 63,438

400 92 189 283 546 870 1,538 2,252 3,137 5,676 9,190 18,883 34,296 54,295

500 82 168 251 484 771 1,363 1,996 2,780 5,030 8,145 16,735 30,396 48,120

1,000 56 115 173 333 530 937 1,372 1,911 3,457 5,598 11,502 20,891 33,073

1,500 45 93 139 267 426 752 1,102 1,535 2,776 4,496 9,237 16,776 26,559

2,000 39 79 119 229 364 644 943 1,313 2,376 3,848 7,905 14,358 22,731

54-131 (Log #99) Rec. continued

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Table 12.1 Schedule 40 Metallic PipeGas Natural

Inlet pressure 0.5 psi*Pressure Drop 0.3 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/23/4 1 1 1⁄4 11/2 2 21/2 3 4 5 6 8 10 12

Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 131 273 514 1,056 1,582 3,046 4,856 8,584 17,508 31,675 51,289 105,379 191,397 303,00520 90 188 353 726 1,087 2,094 3,337 5,900 12,033 21,770 35,251 72,426 131,546 208,25430 72 151 284 583 873 1,681 2,680 4,738 9,663 17,482 28,307 58,161 105,636 167,23540 62 129 243 499 747 1,439 2,294 4,055 8,270 14,962 24,228 49,778 90,411 143,13250 55 114 215 442 662 1,275 2,033 3,594 7,330 13,261 21,472 44,118 80,129 126,85560 50 104 195 400 600 1,156 1,842 3,256 6,641 12,015 19,456 39,974 72,603 114,94070 46 95 179 368 552 1,063 1,695 2,996 6,110 11,054 17,899 36,775 66,794 105,74380 42 89 167 343 514 989 1,576 2,787 5,684 10,284 16,651 34,212 62,139 98,37490 40 83 157 322 482 928 1,479 2,615 5,333 9,649 15,623 32,100 58,303 92,301

100 38 79 148 304 455 877 1,397 2,470 5,038 9,114 14,758 30,322 55,072 87,187125 33 70 131 269 403 777 1,238 2,189 4,465 8,078 13,080 26,874 48,810 77,272150 30 63 119 244 366 704 1,122 1,983 4,046 7,319 11,851 24,349 44,225 70,014175 28 58 109 224 336 648 1,032 1,825 3,722 6,733 10,903 22,401 40,687 64,412200 26 54 102 209 313 602 960 1,698 3,462 6,264 10,143 20,840 37,851 59,923250 23 48 90 185 277 534 851 1,505 3,069 5,552 8,990 18,470 33,547 53,109300 21 43 82 168 251 484 771 1,363 2,780 5,030 8,145 16,735 30,396 48,120350 19 40 75 154 231 445 709 1,254 2,558 4,628 7,493 15,396 27,964 44,270400 18 37 70 143 215 414 660 1,167 2,380 4,305 6,971 14,323 26,015 41,185450 17 35 66 135 202 389 619 1,095 2,233 4,039 6,541 13,439 24,409 38,642500 16 33 62 127 191 367 585 1,034 2,109 3,816 6,178 12,694 23,056 36,501550 15 31 59 121 181 349 556 982 2,003 3,624 5,868 12,056 21,898 34,667600 14.2 30 56 115 173 333 530 937 1,911 3,457 5,598 11,502 20,891 33,073650 13.6 29 54 110 165 318 508 897 1,830 3,311 5,361 11,015 20,005 31,671700 13.1 27 52 106 159 306 488 862 1,758 3,181 5,150 10,582 19,219 30,426750 12.6 26 50 102 153 295 470 830 1,694 3,064 4,962 10,194 18,515 29,312800 12.2 26 48 99 148 285 454 802 1,636 2,959 4,791 9,844 17,880 28,306850 11.8 25 46 95 143 275 439 776 1,583 2,864 4,637 9,527 17,303 27,393900 11.4 24 45 93 139 267 426 752 1,535 2,776 4,496 9,237 16,776 26,559950 11.1 23 44 90 135 259 413 731 1,490 2,696 4,366 8,970 16,292 25,793

1,000 10.8 23 43 87 131 252 402 711 1,450 2,622 4,246 8,725 15,847 25,0871,100 10.3 21 40 83 124 240 382 675 1,377 2,491 4,033 8,286 15,050 23,8261,200 NR 20 39 79 119 229 364 644 1,313 2,376 3,848 7,905 14,358 22,7311,300 NR 20 37 76 114 219 349 617 1,258 2,275 3,685 7,570 13,750 21,7671,400 NR 19 35 73 109 210 335 592 1,208 2,186 3,540 7,273 13,209 20,9121,500 NR 18.1 34 70 105 203 323 571 1,164 2,106 3,410 7,006 12,725 20,1461,600 NR 17.5 33 68 102 196 312 551 1,124 2,034 3,293 6,766 12,289 19,4551,700 NR 17.0 32 66 98 189 302 533 1,088 1,968 3,187 6,548 11,892 18,8271,800 NR 16.4 31 64 95 184 293 517 1,055 1,908 3,090 6,348 11,530 18,2541,900 NR 16.0 30 62 93 178 284 502 1,024 1,853 3,001 6,165 11,198 17,7272,000 NR 15.5 29 60 90 173 276 488 996 1,802 2,919 5,996 10,891 17,242

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.3 in. pressure drop.

54-131 (Log #99) Rec. continued

54-131 (Log #99) Rec. continued

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Table 12.2 Schedule 40 Metallic PipeGas Natural

Inlet pressure 0.5 psi*Pressure Drop 0.5 in. WC

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4 5 6 8 10 12Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 172 360 678 1,392 2,085 4,016 6,401 11,316 23,081 41,758 67,615 138,923 252,322 399,45720 118 247 466 957 1,433 2,760 4,400 7,778 15,864 28,700 46,471 95,481 173,419 274,54530 95 199 374 768 1,151 2,217 3,533 6,246 12,739 23,047 37,318 76,675 139,262 220,46940 81 170 320 657 985 1,897 3,024 5,345 10,903 19,725 31,940 65,624 119,190 188,69350 72 151 284 583 873 1,681 2,680 4,738 9,663 17,482 28,307 58,161 105,636 167,23560 65 137 257 528 791 1,523 2,428 4,293 8,756 15,840 25,649 52,698 95,714 151,52770 60 126 237 486 728 1,402 2,234 3,949 8,055 14,573 23,596 48,482 88,055 139,40380 56 117 220 452 677 1,304 2,078 3,674 7,494 13,557 21,952 45,103 81,919 129,68890 52 110 207 424 635 1,223 1,950 3,447 7,031 12,720 20,597 42,318 76,862 121,682

100 50 104 195 400 600 1,156 1,842 3,256 6,641 12,015 19,456 39,974 72,603 114,940125 44 92 173 355 532 1,024 1,632 2,886 5,886 10,649 17,243 35,428 64,347 101,869150 40 83 157 322 482 928 1,479 2,615 5,333 9,649 15,623 32,100 58,303 92,301175 37 77 144 296 443 854 1,361 2,406 4,907 8,877 14,373 29,532 53,638 84,915200 34 71 134 275 412 794 1,266 2,238 4,565 8,258 13,372 27,474 49,900 78,997250 30 63 119 244 366 704 1,122 1,983 4,046 7,319 11,851 24,349 44,225 70,014300 27 57 108 221 331 638 1,017 1,797 3,666 6,632 10,738 22,062 40,071 63,438350 25 53 99 203 305 587 935 1,653 3,372 6,101 9,879 20,297 36,865 58,362400 23 49 92 189 283 546 870 1,538 3,137 5,676 9,190 18,883 34,296 54,294450 22 46 86 177 266 512 816 1,443 2,944 5,325 8,623 17,717 32,179 50,943500 21 43 82 168 251 484 771 1,363 2,780 5,030 8,145 16,735 30,396 48,120550 20 41 78 159 239 459 732 1,295 2,641 4,777 7,736 15,894 28,868 45,702600 19 39 74 152 228 438 699 1,235 2,519 4,558 7,380 15,163 27,541 43,600650 18 38 71 145 218 420 669 1,183 2,413 4,365 7,067 14,521 26,374 41,753700 17.3 36 68 140 209 403 643 1,136 2,318 4,193 6,790 13,950 25,337 40,112750 16.6 35 66 135 202 389 619 1,095 2,233 4,039 6,541 13,439 24,409 38,642800 16.1 34 63 130 195 375 598 1,057 2,156 3,901 6,316 12,978 23,571 37,316850 15.6 33 61 126 189 363 579 1,023 2,087 3,775 6,113 12,559 22,811 36,112900 15.1 32 59 122 183 352 561 992 2,023 3,660 5,927 12,177 22,116 35,013950 14.7 31 58 118 178 342 545 963 1,965 3,555 5,756 11,826 21,479 34,003

1,000 14.2 30 56 115 173 333 530 937 1,911 3,457 5,598 11,502 20,891 33,0731,100 13.5 28 53 109 164 316 503 890 1,815 3,284 5,317 10,924 19,841 31,4111,200 12.9 27 51 104 156 301 480 849 1,732 3,133 5,072 10,422 18,929 29,9661,300 12.4 26 49 100 150 289 460 813 1,658 3,000 4,857 9,980 18,126 28,6961,400 11.9 25 47 96 144 277 442 781 1,593 2,882 4,666 9,588 17,414 27,5691,500 11.4 24 45 93 139 267 426 752 1,535 2,776 4,496 9,237 16,776 26,5591,600 11.0 23 44 89 134 258 411 727 1,482 2,681 4,341 8,920 16,200 25,6471,700 10.7 22.4 42 86 130 250 398 703 1,434 2,595 4,201 8,632 15,678 24,8201,800 10.4 21.7 41 84 126 242 386 682 1,390 2,516 4,073 8,369 15,200 24,0641,900 10.1 21.1 40 81 122 235 375 662 1,350 2,443 3,956 8,128 14,762 23,3702,000 10.0 20.5 39 79 119 229 364 644 1,313 2,376 3,848 7,905 14,358 22,731

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop.

54-131 (Log #99) Rec. continued

54-39

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.3 Schedule 40 Metallic PipeGas Natural

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 0.60

Pipe Size (in.)

Nominal 1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 1,506 3,041 5,561 11,415 17,106 32,944 52,505 92,819 189,32620 1,065 2,150 3,932 8,072 12,096 23,295 37,127 65,633 133,87330 869 1,756 3,211 6,591 9,876 19,020 30,314 53,589 109,30740 753 1,521 2,781 5,708 8,553 16,472 26,253 46,410 94,66350 673 1,360 2,487 5,105 7,650 14,733 23,481 41,510 84,66960 615 1,241 2,270 4,660 6,983 13,449 21,435 37,893 77,29270 569 1,150 2,102 4,315 6,465 12,452 19,845 35,082 71,55880 532 1,075 1,966 4,036 6,048 11,647 18,563 32,817 66,93790 502 1,014 1,854 3,805 5,702 10,981 17,502 30,940 63,109

100 462 934 1,708 3,508 5,257 10,125 16,138 28,530 58,194125 414 836 1,528 3,138 4,702 9,056 14,434 25,518 52,050150 372 751 1,373 2,817 4,222 8,130 12,960 22,911 46,732175 344 695 1,271 2,608 3,909 7,527 11,999 21,211 43,265200 318 642 1,174 2,413 3,613 6,959 11,093 19,608 39,997250 279 583 1,043 2,141 3,209 6,179 9,849 17,411 35,513300 253 528 945 1,940 2,907 5,599 8,924 15,775 32,177350 232 486 869 1,785 2,675 5,151 8,210 14,513 29,602400 216 452 809 1,661 2,488 4,792 7,638 13,502 27,539450 203 424 759 1,558 2,335 4,496 7,166 12,668 25,839500 192 401 717 1,472 2,205 4,247 6,769 11,966 24,408550 182 381 681 1,398 2,094 4,034 6,429 11,365 23,181600 174 363 650 1,334 1,998 3,848 6,133 10,842 22,115650 166 348 622 1,277 1,913 3,685 5,873 10,383 21,178700 160 334 598 1,227 1,838 3,540 5,642 9,975 20,346750 154 322 576 1,182 1,771 3,410 5,436 9,609 19,600800 149 311 556 1,141 1,710 3,293 5,249 9,280 18,928850 144 301 538 1,105 1,655 3,187 5,080 8,980 18,317900 139 292 522 1,071 1,605 3,090 4,925 8,707 17,759950 135 283 507 1,040 1,558 3,001 4,783 8,456 17,247

1,000 132 275 493 1,012 1,516 2,919 4,652 8,224 16,7751,100 125 262 468 961 1,439 2,772 4,418 7,811 15,9321,200 119 250 446 917 1,373 2,645 4,215 7,452 15,2001,300 114 239 427 878 1,315 2,533 4,037 7,136 14,5551,400 110 230 411 843 1,263 2,433 3,878 6,856 13,9831,500 106 221 396 812 1,217 2,344 3,736 6,605 13,4711,600 102 214 382 784 1,175 2,264 3,608 6,378 13,0091,700 99 207 370 759 1,137 2,191 3,491 6,172 12,5891,800 96 200 358 736 1,103 2,124 3,385 5,984 12,2061,900 93 195 348 715 1,071 2,063 3,287 5,812 11,8542,000 91 189 339 695 1,042 2,006 3,197 5,653 11,530

54-131 (Log #99) Rec. continued

54-40

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.4 Schedule 40 Metallic PipeGas Natural

Inlet pressure 5.0 psiPressure Drop 3.5 psi

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 3,185 6,434 11,766 24,161 36,206 69,727 111,133 196,468 400,73220 2,252 4,550 8,320 17,084 25,602 49,305 78,583 138,924 283,36130 1,839 3,715 6,793 13,949 20,904 40,257 64,162 113,431 231,36340 1,593 3,217 5,883 12,080 18,103 34,864 55,566 98,234 200,36650 1,425 2,878 5,262 10,805 16,192 31,183 49,700 87,863 179,21360 1,301 2,627 4,804 9,864 14,781 28,466 45,370 80,208 163,59870 1,204 2,432 4,447 9,132 13,685 26,354 42,004 74,258 151,46380 1,153 2,330 4,260 8,542 12,801 24,652 39,291 69,462 141,68090 1,062 2,145 3,922 8,054 12,069 23,242 37,044 65,489 133,577

100 979 1,978 3,617 7,427 11,128 21,433 34,159 60,387 123,173125 876 1,769 3,235 6,643 9,953 19,170 30,553 54,012 110,169150 786 1,589 2,905 5,964 8,937 17,211 27,431 48,494 98,911175 728 1,471 2,690 5,522 8,274 15,934 25,396 44,897 91,574200 673 1,360 2,487 5,104 7,649 14,729 23,478 41,504 84,656250 558 1,167 2,199 4,515 6,765 13,028 20,764 36,708 74,872300 506 1,058 1,992 4,091 6,129 11,804 18,814 33,260 67,840350 465 973 1,833 3,763 5,639 10,860 17,309 30,599 62,412400 433 905 1,705 3,501 5,246 10,103 16,102 28,466 58,062450 406 849 1,600 3,285 4,922 9,479 15,108 26,709 54,478500 384 802 1,511 3,103 4,649 8,954 14,271 25,229 51,459550 364 762 1,435 2,947 4,416 8,504 13,554 23,961 48,873600 348 727 1,369 2,812 4,213 8,113 12,931 22,859 46,626650 333 696 1,311 2,692 4,034 7,769 12,383 21,891 44,650700 320 669 1,260 2,587 3,876 7,464 11,896 21,030 42,895750 308 644 1,214 2,492 3,734 7,190 11,460 20,260 41,324800 298 622 1,172 2,406 3,605 6,944 11,067 19,565 39,906850 288 602 1,134 2,329 3,489 6,720 10,710 18,933 38,618900 279 584 1,100 2,258 3,383 6,515 10,384 18,357 37,442950 271 567 1,068 2,193 3,285 6,327 10,085 17,828 36,363

1,000 264 551 1,039 2,133 3,195 6,154 9,809 17,340 35,3681,100 250 524 987 2,025 3,035 5,845 9,316 16,468 33,5901,200 239 500 941 1,932 2,895 5,576 8,887 15,711 32,0461,300 229 478 901 1,850 2,773 5,340 8,511 15,045 30,6881,400 220 460 866 1,778 2,664 5,130 8,176 14,454 29,4821,500 212 443 834 1,713 2,566 4,942 7,877 13,924 28,4011,600 205 428 806 1,654 2,478 4,772 7,606 13,447 27,4271,700 198 414 780 1,600 2,398 4,618 7,361 13,013 26,5421,800 192 401 756 1,552 2,325 4,478 7,137 12,617 25,7341,900 186 390 734 1,507 2,258 4,349 6,931 12,253 24,9922,000 181 379 714 1,466 2,196 4,230 6,741 11,918 24,308

54-131 (Log #99) Rec. continued

54-41

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.7 Semi-Rigid Copper TubingGas Natural

Inlet pressure 0.5 psi or less*Pressure Drop 0.3 in. WC

Specific Gravity 0.60Tube Size (in.)

Nominal:K & L 1⁄4 3/8

1/25/8

3/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 20 42 85 148 210 448 806 1,271 2,646 4,68220 14 29 58 102 144 308 554 873 1,819 3,21830 11 23 47 82 116 247 445 701 1,461 2,58440 10 20 40 70 99 211 381 600 1,250 2,21250 NR 8.4 17 35 62 88 187 337 532 1,108 1,96060 NR 7.6 16 32 56 79 170 306 482 1,004 1,77670 NR 7.0 14 29 52 73 156 281 443 924 1,63480 NR 6.5 13 27 48 68 145 262 413 859 1,52090 NR 6.1 13 26 45 64 136 245 387 806 1,426

100 NR 5.8 12 24 43 60 129 232 366 761 1,347125 NR 5.1 11 22 38 53 114 206 324 675 1,194150 NR 4.7 10 20 34 48 103 186 294 612 1,082175 NR 4.3 NR 8.8 18 31 45 95 171 270 563 995200 NR 4.0 NR 8.2 17 29 41 89 159 251 523 926250 NR 3.5 NR 7.3 15 26 37 78 141 223 464 821300 NR 3.2 NR 6.6 13 23 33 71 128 202 420 744350 NR NR 12 22 31 65 118 186 387 684400 NR NR 11 20 28 61 110 173 360 636450 NR NR 10.8 19 27 57 103 162 338 597500 NR NR 10.2 18 25 54 97 153 319 564550 NR NR NR 17 24 51 92 145 303 536600 NR NR NR 16 23 49 88 139 289 511650 NR NR NR 15.4 22 47 84 133 277 489700 NR NR NR 14.8 21 45 81 128 266 470750 NR NR NR 14.3 20.3 43 78 123 256 453800 NR NR NR 13.8 19.6 42 75 119 247 437850 NR NR NR 13.4 18.9 40 73 115 239 423900 NR NR NR 12.9 18.4 39 71 111 232 410950 NR NR NR 12.6 17.8 38 69 108 225 399

1,000 NR NR NR 12.2 17.4 37 67 105 219 3881,100 NR NR NR 11.6 16.5 35 63 100 208 3681,200 NR NR NR 11.1 15.7 34 60 95 199 3511,300 NR NR NR 10.6 15.1 32 58 91 190 3361,400 NR NR NR 10.2 14.5 31 56 88 183 3231,500 NR NR NR NR 13.9 30 54 84 176 3111,600 NR NR NR NR 13.5 29 52 82 170 3011,700 NR NR NR NR 13.0 28 50 79 164 2911,800 NR NR NR NR 12.6 27 49 77 159 2821,900 NR NR NR NR 12.3 26 47 74 155 2742,000 NR NR NR NR 11.9 25 46 72 151 266Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.3 in. pressure drop

54-131 (Log #99) Rec. continued

54-42

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.8 Semi-Rigid Copper TubingGas Natural

Inlet pressure 0.5 psi or less*Pressure Drop 0.5 in. WC

Specific Gravity 0.60Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81⁄2 5/8

3/47/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 27 55 111 195 276 590 1,062 1,675 3,489 6,17320 18 38 77 134 190 406 730 1,151 2,398 4,24230 15 30 61 107 152 326 586 925 1,926 3,40740 13 26 53 92 131 279 502 791 1,648 2,91650 11 23 47 82 116 247 445 701 1,461 2,58460 10 21 42 74 105 224 403 635 1,323 2,34170 NR 9.3 19 39 68 96 206 371 585 1,218 2,15480 NR 8.6 18 36 63 90 192 345 544 1,133 2,00490 NR 8.1 17 34 59 84 180 324 510 1,063 1,880

100 NR 7.6 16 32 56 79 170 306 482 1,004 1,776125 NR 6.8 14 28 50 70 151 271 427 890 1,574150 NR 6.1 13 26 45 64 136 245 387 806 1,426175 NR 5.6 12 24 41 59 125 226 356 742 1,312200 NR 5.2 11 22 39 55 117 210 331 690 1,221250 NR 4.7 10 20 34 48 103 186 294 612 1,082300 NR 4.2 NR 8.7 18 31 44 94 169 266 554 980350 NR NR 16 28 40 86 155 245 510 902400 NR NR 15 26 38 80 144 228 474 839450 NR NR

14 25 35 75 135 214 445 787500 NR NR 13.4 23 33 71 128 202 420 744550 NR NR 12.7 22 32 68 122 192 399 706600 NR NR 12.2 21 30 64 116 183 381 674650 NR NR 11.6 20 29 62 111 175 365 645700 NR NR 11.2 19.6 28 59 107 168 350 620750 NR NR 10.8 18.8 27 57 103 162 338 597800 NR NR 10.4 18.2 26 55 99 156 326 577850 NR NR 10.1 17.6 25 53 96 151 315 558900 NR NR NR 17.1 24.2 52 93 147 306 541950 NR NR NR 16.6 23.5 50 90 143 297 525

1,000 NR NR NR 16.1 22.9 49 88 139 289 5111,100 NR NR NR 15.3 21.7 46 84 132 274 4851,200 NR NR NR 14.6 20.7 44 80 126 262 4631,300 NR NR NR 14.0 19.8 42 76 120 251 4431,400 NR NR NR 13.4 19.1 41 73 116 241 4261,500 NR NR NR 12.9 18.4 39 71 111 232 4101,600 NR NR NR 12.5 17.7 38 68 108 224 3961,700 NR NR NR 12.1 17.2 37 66 104 217 3841,800 NR NR NR 11.7 16.6 36 64 101 210 3721,900 NR NR NR 11.4 16.2 35 62 98 204 3612,000 NR NR NR

11.1 15.7 34 60 95 199 351Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop

54-131 (Log #99) Rec. continued

54-43

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.9 Semi-Rigid Copper TubingGas Natural

Inlet pressure 0.5 psi or less*Pressure Drop 1.0 in. WC

Specific Gravity 0.60

SPECIAL USE: Use this Table to Size Tubing from House Line Regulator to the Appliance.Tube Size (in.)

Nominal:K & L 1/4 3/8 1/2 5/8 3/4 1 1-1/4 1-1/2 2 2-1/2

ACR 3/8 1/2 5/8 3/4 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 39 80 162 283 402 859 1,546 2,437 5,076 8,98120 27 55 111 195 276 590 1,062 1,675 3,489 6,17330 21 44 89 156 222 474 853 1,345 2,802 4,95740 18 38 77 134 190 406 730 1,151 2,398 4,24250 16 33 68 119 168 359 647 1,020 2,125 3,76060 15 30 61 107 152 326 586 925 1,926 3,40770 13 28 57 99 140 300 539 851 1,772 3,13480 13 26 53 92 131 279 502 791 1,648 2,91690 12 24 49 86 122 262 471 742 1,546 2,736

100 11 23 47 82 116 247 445 701 1,461 2,584125 NR 9.8 20 41 72 103 219 394 622 1,295 2,290150 NR 8.9 18 37 65 93 198 357 563 1,173 2,075175 NR 8.2 17 34 60 85 183 329 518 1,079 1,909200 NR 7.6 16 32 56 79 170 306 482 1,004 1,776250 NR 6.8 14 28 50 70 151 271 427 890 1,574300 NR 6.1 13 26 45 64 136 245 387 806 1,426350 NR 11.6 24 41 59 125 226 356 742 1,312400 NR 10.8 22 39 55 117 210 331 690 1,221450 NR 10.2 21 36 51 110 197 311 647 1,145500 NR NR 19.5 34 48 103 186 294 612 1,082550 NR NR 18.5 32 46 98 177 279 581 1,028600 NR NR 17.7 31 44 94 169 266 554 980650 NR NR 16.9 30 42 90 162 255 531 939700 NR NR 16.3 28.5 40 86 155 245 510 902750 NR NR 15.7 27.4 39 83 150 236 491 869800 NR NR 15.1 26.5 38 80 144 228 474 839850 NR NR 14.7 25.6 36 78 140 220 459 812900 NR NR 14.2 24.8 35.2 75 135 214 445 787950 NR NR 13.8 24.1 34.2 73 132 207 432 764

1,000 NR NR 13.4 23.5 33.3 71 128 202 420 7441,100 NR NR 12.7 22.3 31.6 68 122 192 399 7061,200 NR NR 12.2 21.3 30.2 64 116 183 381 6741,300 NR NR 11.6 20.4 28.9 62 111 175 365 6451,400 NR NR 11.2 19.6 27.7 59 107 168 350 6201,500 NR NR 10.8 18.8 26.7 57 103 162 338 5971,600 NR NR 10.4 18.2 25.8 55 99 156 326 5771,700 NR NR 10.1 17.6 25.0 53 96 151 315 5581,800 NR NR NR 17.1 24.2 52 93 147 306 5411,900 NR NR NR 16.6 23.5 50 90 143 297 5252,000 NR NR NR 16.1 22.9 49 88 139 289 511

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 1.0 in. pressure drop.

54-131 (Log #99) Rec. continued

54-44

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.10 Semi-Rigid Copper TubingGas Natural

Inlet pressure 2.0 psi or lessPressure Drop 17.0 in. WC

Specific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 190 391 796 1,391 1,974 4,216 7,591 11,968 24,926 44,10020 130 269 547 956 1,357 2,898 5,217 8,226 17,132 30,31030 105 216 439 768 1,089 2,327 4,189 6,605 13,757 24,34040 90 185 376 657 932 1,992 3,586 5,653 11,775 20,83250 79 164 333 582 826 1,765 3,178 5,010 10,436 18,46360 72 148 302 528 749 1,599 2,879 4,540 9,455 16,72970 66 137 278 486 689 1,471 2,649 4,177 8,699 15,39080 62 127 258 452 641 1,369 2,464 3,886 8,093 14,31890 58 119 243 424 601 1,284 2,312 3,646 7,593 13,434

100 55 113 229 400 568 1,213 2,184 3,444 7,172 12,689125 48 100 203 355 503 1,075 1,936 3,052 6,357 11,246150 44 90 184 321 456 974 1,754 2,765 5,760 10,190175 40 83 169 296 420 896 1,614 2,544 5,299 9,375200 38 77 157 275 390 834 1,501 2,367 4,930 8,721250 33 69 140 244 346 739 1,330 2,098 4,369 7,730300 30 62 126 221 313 670 1,205 1,901 3,959 7,004

350 28 57 116 203 288 616 1,109 1,749 3,642 6,443400 26 53 108 189 268 573 1,032 1,627 3,388 5,994450 24 50 102 177 252 538 968 1,526 3,179 5,624500 23 47 96 168 238 508 914 1,442 3,003 5,312550 22 45 91 159 226 482 868 1,369 2,852 5,046600 21 43 87 152 215 460 829 1,306 2,721 4,814650 20 41 83 145 206 441 793 1,251 2,605 4,610700 19 39 80 140 198 423 762 1,202 2,503 4,428750 18.3 38 77 135 191 408 734 1,158 2,411 4,266800 17.7 37 74 130 184 394 709 1,118 2,329 4,120850 17.1 35 72 126 178 381 686 1,082 2,253 3,987900 16.6 34 70 122 173 370 665 1,049 2,185 3,865950 16.1 33 68 118 168 359 646 1,019 2,122 3,754

1,000 15.7 32 66 115 163 349 628 991 2,064 3,6511,100 14.9 31 63 109 155 332 597 941 1,960 3,4681,200 14.2 29 60 104 148 316 569 898 1,870 3,3081,300 13.6 28 57 100 142 303 545 860 1,791 3,1681,400 13.1 27 55 96 136 291 524 826 1,720 3,0441,500 12.6 26 53 93 131 280 505 796 1,657 2,9321,600 12.2 25 51 89 127 271 487 768 1,600 2,8311,700 11.8 24.3 49 86 123 262 472 744 1,549 2,7401,800 11.4 23.6 48 84 19 254 457 721 1,502 2,6571,900 11.1 22.9 47 81 115 247 444 700 1,458 2,5802,000 10.8 22.3 45 79 112 240 432 681 1,418 2,509

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

54-131 (Log #99) Rec. continued

54-45

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.11 Semi-Rigid Copper Tubing

Gas NaturalInlet pressure 2.0 psi or less

Pressure Drop 1.0 psiSpecific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 245 506 1,030 1,800 2,554 5,455 9,820 15,483 32,247 57,05120 169 348 708 1,237 1,755 3,749 6,749 10,641 22,163 39,21130 135 279 568 993 1,409 3,011 5,420 8,545 17,798 31,48840 116 239 486 850 1,206 2,577 4,639 7,314 15,232 26,94950 103 212 431 754 1,069 2,284 4,111 6,482 13,500 23,88560 93 192 391 683 969 2,069 3,725 5,873 12,232 21,64170 86 177 359 628 891 1,904 3,427 5,403 11,253 19,91080 80 164 334 584 829 1,771 3,188 5,027 10,469 18,52290 75 154 314 548 778 1,662 2,991 4,716 9,823 17,379

100 71 146 296 518 735 1,570 2,826 4,455 9,279 16,416125 63 129 263 459 651 1,391 2,504 3,948 8,223 14,549150 57 117 238 416 590 1,260 2,269 3,577 7,451 13,183175 52 108 219 383 543 1,160 2,087 3,291 6,855 12,128200 49 100 204 356 505 1,079 1,942 3,062 6,377 11,283250 43 89 181 315 448 956 1,721 2,714 5,652 10,000300 39 80 164 286 406 866 1,559 2,459 5,121 9,060

350 36 74 150 263 373 797 1,435 2,262 4,711 8,335400 33 69 140 245 347 741 1,335 2,104 4,383 7,754450 31 65 131 230 326 696 1,252 1,974 4,112 7,276500 30 61 124 217 308 657 1,183 1,865 3,885 6,873550 28 58 118 206 292 624 1,123 1,771 3,689 6,527600 27 55 112 196 279 595 1,072 1,690 3,520 6,227650 26 53 108 188 267 570 1,026 1,618 3,371 5,963700 25 51 103 181 256 548 986 1,555 3,238 5,729750 24 49 100 174 247 528 950 1,498 3,119 5,519800 23 47 96 168 239 510 917 1,446 3,012 5,330850 22.2 46 93 163 231 493 888 1,400 2,915 5,158900 21.5 44 90 158 224 478 861 1,357 2,826 5,001950 20.9 43 88 153 217 464 836 1,318 2,745 4,856

1,000 20.3 42 85 149 211 452 813 1,282 2,670 4,7241,100 19.3 40 81 142 201 429 772 1,217 2,536 4,4861,200 18.4 38 77 135 192 409 737 1,161 2,419 4,2801,300 17.6 36 74 129 183 392 705 1,112 2,317 4,0981,400 16.9 35 71 124 176 376 678 1,069 2,226 3,9371,500 16.3 34 68 120 170 363 653 1,029 2,144 3,7931,600 15.8 33 66 116 164 350 630 994 2,070 3,6631,700 15.2 31 64 112 159 339 610 962 2,004 3,5451,800 14.8 30.5 62 108 154 329 592 933 1,943 3,4371,900 14.4 29.6 60 105 149 319 575 906 1,887 3,3382,000 14.0 28.8 59 102 145 310 559 881 1,835 3,246

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

54-131 (Log #99) Rec. continued

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Table 12.12 Semi-Rigid Copper Tubing

Gas NaturalInlet pressure 2.0 psi

Pressure Drop 1.5 psiSpecific Gravity 0.60

SPECIAL USE: Pipe Sizing Between Point of Delivery and the House Line Regulator. Total Load Supplied by a Single House Line Regulator Not Exceeding 150 Cubic Feet per Hour.2

Tube Size (in.)

Nominal:K & L 1⁄4 3/8

1/25/8

3/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside1: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 303 625 1,272 2,224 3,155 6,739 12,131 19,127 39,837 70,481

20 208 430 874 1,528 2,168 4,631 8,338 13,146 27,380 48,441

30 167 345 702 1,227 1,741 3,719 6,696 10,557 21,987 38,900

40 143 295 601 1,050 1,490 3,183 5,731 9,035 18,818 33,293

50 127 262 533 931 1,321 2,821 5,079 8,008 16,678 29,507

60 115 237 483 843 1,197 2,556 4,602 7,256 15,112 26,736

70 106 218 444 776 1,101 2,352 4,234 6,675 13,903 24,597

80 98 203 413 722 1,024 2,188 3,939 6,210 12,934 22,882

90 92 191 388 677 961 2,053 3,695 5,826 12,135 21,470

100 87 180 366 640 908 1,939 3,491 5,504 11,463 20,280

125 77 159 324 567 804 1,718 3,094 4,878 10,159 17,974

150 70 145 294 514 729 1,557 2,803 4,420 9,205 16,286

175 64 133 270 473 671 1,432 2,579 4,066 8,469 14,983

200 60 124 252 440 624 1,333 2,399 3,783 7,878 13,938

250 53 110 223 390 553 1,181 2,126 3,352 6,982 12,353300 48 99 202 353 501 1,070 1,927 3,038 6,327 11,193

350 44 91 186 325 461 984 1,772 2,793 5,818 10,293400 41 85 173 302 429 916 1,648 2,599 5,412 9,576450 39 80 162 283 402 859 1,546 2,438 5,078 8,985500 36 75 153 268 380 811 1,461 2,303 4,797 8,487550 35 72 146 254 361 771 1,387 2,187 4,556 8,060600 33 68 139 243 344 735 1,324 2,087 4,346 7,690650 32 65 133 232 330 704 1,267 1,998 4,162 7,364700 30 63 128 223 317 676 1,218 1,920 3,999 7,074750 29 60 123 215 305 652 1,173 1,849 3,852 6,815800 28 58 119 208 295 629 1,133 1,786 3,720 6,581850 27.4 57 115 201 285 609 1,096 1,728 3,600 6,369900 26.6 55 111 195 276 590 1,063 1,676 3,490 6,175950 25.8 53 108 189 268 573 1,032 1,627 3,390 5,997

1,000 25.1 52 105 184 261 558 1,004 1,583 3,297 5,8331,100 23.8 49 100 175 248 530 954 1,503 3,131 5,5401,200 22.7 47 95 167 237 505 910 1,434 2,987 5,2851,300 21.8 45 91 160 227 484 871 1,373 2,861 5,0611,400 20.9 43 88 153 218 465 837 1,319 2,748 4,8621,500 20.1 42 85 148 210 448 806 1,271 2,648 4,6841,600 19.5 40 82 143 202 432 779 1,228 2,557 4,5231,700 18.8 39 79 138 196 419 753 1,188 2,474 4,3771,800 18.3 38 77 134 190 406 731 1,152 2,399 4,2441,900 17.7 37 74 130 184 394 709 1,119 2,330 4,1222,000 17.2 36 72 126 179 383 690 1,088 2,266 4,009Notes: 1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. When this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized using a pressure drop no

greater than 1 inch w.c.

54-131 (Log #99) Rec. continued

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Table 12.13 Semi-Rigid Copper Tubing

Gas NaturalInlet pressure 5.0 psi or less

Pressure Drop 3.5 psiSpecific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 511 1,054 2,144 3,747 5,315 11,354 20,441 32,229 67,125 118,75820 351 724 1,473 2,575 3,653 7,804 14,049 22,151 46,135 81,62230 282 582 1,183 2,068 2,934 6,267 11,282 17,788 37,048 65,54540 241 498 1,013 1,770 2,511 5,364 9,656 15,224 31,708 56,09850 214 441 898 1,569 2,225 4,754 8,558 13,493 28,102 49,71960 194 400 813 1,421 2,016 4,307 7,754 12,225 25,463 45,04970 178 368 748 1,308 1,855 3,962 7,134 11,247 23,425 41,44480 166 342 696 1,216 1,726 3,686 6,636 10,463 21,793 38,55690 156 321 653 1,141 1,619 3,459 6,227 9,817 20,447 36,176

100 147 303 617 1,078 1,529 3,267 5,882 9,273 19,315 34,172125 130 269 547 955 1,356 2,896 5,213 8,219 17,118 30,286150 118 243 495 866 1,228 2,624 4,723 7,447 15,510 27,441175 109 224 456 796 1,130 2,414 4,345 6,851 14,269 25,245200 101 208 424 741 1,051 2,245 4,042 6,374 13,275 23,486250 90 185 376 657 932 1,990 3,583 5,649 11,765 20,815300 81 167 340 595 844 1,803 3,246 5,118 10,660 18,860

350 75 154 313 547 777 1,659 2,987 4,709 9,807 17,351 400 69 143 291 509 722 1,543 2,778 4,381 9,124 16,142 450 65 134 273 478 678 1,448 2,607 4,110 8,560 15,145 500 62 127 258 451 640 1,368 2,462 3,882 8,086 14,306 550 58 121 245 429 608 1,299 2,339 3,687 7,680 13,587 600 56 115 234 409 580 1,239 2,231 3,518 7,327 12,962 650 53 110 224 392 556 1,187 2,137 3,369 7,016 12,413 700 51 106 215 376 534 1,140 2,053 3,236 6,740 11,925 750 49 102 207 362 514 1,098 1,977 3,118 6,493 11,488 800 48 98 200 350 497 1,061 1,910 3,011 6,271 11,094 850 46.2 95 194 339 481 1,026 1,848 2,914 6,068 10,736 900 44.8 92 188 328 466 995 1,792 2,825 5,884 10,409 950 43.5 90 182 319 452 967 1,740 2,743 5,714 10,109

1,000 42.3 87 177 310 440 940 1,692 2,668 5,558 9,833 1,100 40.2 83 169 295 418 893 1,607 2,534 5,278 9,338 1,200 38.3 79 161 281 399 852 1,533 2,418 5,036 8,909 1,300 36.7 76 154 269 382 816 1,468 2,315 4,822 8,531 1,400 35.2 73 148 259 367 784 1,411 2,224 4,633 8,196 1,500 34.0 70 143 249 353 755 1,359 2,143 4,463 7,896 1,600 32.8 68 138 241 341 729 1,312 2,069 4,310 7,625 1,700 31.7 65 133 233 330 705 1,270 2,002 4,171 7,379 1,800 30.8 63 129 226 320 684 1,231 1,942 4,044 7,154 1,900 29.9 62 125 219 311 664 1,196 1,886 3,927 6,948 2,000 29.1 60 122 213 302 646 1,163 1,834 3,820 6,758

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

54-131 (Log #99) Rec. continued

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Table 12.14 Corrugated Stainless Steel Tubing (CSST)

Gas NaturalInlet pressure 1.0 0.5 psi* or Less

Pressure Drop 0.5 in. WCSpecific Gravity 0.60

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop.

Table 12.15 Corrugated Stainless Steel Tubing (CSST)Gas Natural

Inlet pressure 1.0 0.5 psi* or LessPressure Drop 3.0 in. WC

Specific Gravity 0.60*Table capacities are valid or any inlet gas pressure less than 2 psi with a 3.0 in. pressure drop.

Table 12.16 Corrugated Stainless Steel Tubing (CSST)Gas Natural

Inlet pressure 1.0 0.5 psi* or LessPressure Drop 6.0 in. WC

Specific Gravity 0.60*Table capacities are valid or any inlet gas pressure less than 2 psi with a 6.0 in. pressure drop.

Table 12.19 Polyethylene Plastic PipeGas Natural

Inlet pressure 1.0 0.5 psi* or LessPressure Drop 0.3 in. WC

Specific Gravity 0.60

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.3 in. pressure drop.

Table 12.20 Polyethylene Plastic PipeGas Natural

Inlet pressure 1.0 0.5 psi* or LessPressure Drop 0.5 in. WC

Specific Gravity 0.60

*Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop.

54-131 (Log #99) Rec. continued

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Table 12.22 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 10.0 psiPressure Drop 1.0 psi

Specific Gravity 1.50

SPECIAL USE: Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator)

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 2 1/2 3 31/2 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 3.548 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 3,323 6,949 13,091 26,876 40,269 77,554 123,608 218,517 445,706 20 2,284 4,776 8,997 18,472 27,677 53,302 84,955 150,186 306,331 30 1,834 3,835 7,225 14,834 22,225 42,804 68,222 120,604 176,583 245,99540 1,570 3,283 6,184 12,696 19,022 36,634 58,389 103,222 151,132 210,53950 1,391 2,909 5,480 11,252 16,859 32,468 51,749 91,484 133,946 186,59760 1,261 2,636 4,966 10,195 15,275 29,419 46,889 82,891 121,364 169,07170 1,160 2,425 4,568 9,379 14,053 27,065 43,137 76,258 111,654 155,54380 1,079 2,256 4,250 8,726 13,074 25,179 40,131 70,944 103,872 144,70390 1,012 2,117 3,988 8,187 12,267 23,624 37,653 66,56 97,460 135,770

100 956 2,000 3,767 7,733 11,587 22,315 35,567 62,876 92,060 128,247125 848 1,772 3,338 6,854 10,269 19,778 31,522 55,726 113,663150 768 1,606 3,025 6,210 9,305 17,920 28,562 50,492 73,927 102,987175 706 1,477 2,783 5,713 8,560 16,486 26,276 46,452 94,747 200 657 1,374 2,589 5,315 7,964 15,337 24,445 43,214 63,272 88,144250 582 1,218 2,294 4,711 7,058 13,593 21,665 38,300 56,077 78,120300 528 1,104 2,079 4,268 6,395 12,316 19,630 34,703 50,810 70,782350 486 1,015 1,913 3,927 5,883 11,331 18,060 31,926 46,744 65,119400 452 945 1,779 3,653 5,473 10,541 16,801 29,701 43,487 60,581450 424 886 1,669 3,428 5,135 9,890 15,764 27,867 40,802 56,841500 400 837 1,577 3,238 4,851 9,342 14,890 26,323 38,541 53,691550 380 795 1,498 3,075 4,607 8,873 14,142 25,001 50,993600 363 759 1,429 2,934 4,395 8,465 13,492 23,851 34,921 48,648650 347 726 1,368 2,809 4,209 8,106 12,920 22,840 46,587700 334 698 1,314 2,699 4,044 7,788 12,412 21,943 32,127 44,756750 321 672 1,266 2,600 3,895 7,502 11,957 21,139 43,116800 310 649 1,223 2,511 3,762 7,245 11,547 20,413 29,888 41,637850 300 628 1,183 2,430 3,640 7,011 11,175 19,755 40,293900 291 609 1,147 2,356 3,530 6,798 10,834 19,153 28,043 39,066950 283 592 1,114 2,288 3,428 6,602 10,522 18,601 37,940

1,000 275 575 1,084 2,225 3,334 6,421 10,234 18,092 26,489 36,9021,100 275 575 1,084 2,225 3,334 6,421 9,720 17,183 36,9021,200 261 546 1,029 2,113 3,166 6,098 9,273 16,393 35,0471,300 249 521 982 2,016 3,021 5,818 8,880 15,698 33,4361,400 239 499 940 1,931 2,893 5,571 8,531 15,081 32,0191,500 221 462 870 1,787 2,677 5,156 8,218 14,528 21,272 29,6331,600 213 446 840 1,726 2,585 4,979 7,936 14,030 28,6171,700 206 432 813 1,670 2,502 4,819 7,680 13,577 27,6931,800 200 419 789 1,619 2,426 4,672 7,446 13,164 26,8501,900 194 407 766 1,572 2,356 4,537 7,232 12,784 26,0762,000 189 395 745 1,529 2,291 4,413 7,034 12,435 18,206 25,362

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Report on Proposals — Copyright, NFPA NFPA 54

Table 12.23 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 1.50Pipe Size (in.)

Nominal 1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 2,676 5,595 10,539 21,638 32,420 62,438 99,516 175,927 358,83520 1,839 3,845 7,243 14,872 22,282 42,913 68,397 120,914 246,62530 1,477 3,088 5,817 11,942 17,893 34,461 54,925 97,098 198,04940 1,264 2,643 4,978 10,221 15,314 29,494 47,009 83,103 169,50450 1,120 2,342 4,412 9,059 13,573 26,140 41,663 73,653 150,22960 1,015 2,122 3,998 8,208 12,298 23,685 37,750 66,735 136,11870 934 1,952 3,678 7,551 11,314 21,790 34,729 61,395 125,22780 869 1,816 3,422 7,025 10,526 20,271 32,309 57,116 116,49990 815 1,704 3,210 6,591 9,876 19,020 30,314 53,590 109,307

100 770 1,610 3,033 6,226 9,329 17,966 28,635 50,621 103,251125 682 1,427 2,688 5,518 8,268 15,923 25,378 44,865 91,510150 618 1,293 2,435 5,000 7,491 14,427 22,995 40,651 82,914175 569 1,189 2,240 4,600 6,892 13,273 21,155 37,398 76,280200 529 1,106 2,084 4,279 6,411 12,348 19,681 34,792 70,964

250 469 981 1,847 3,793 5,682 10,944 17,442 30,835 62,894300 425 889 1,674 3,436 5,149 9,916 15,804 27,939 56,987350 391 817 1,540 3,161 4,737 9,122 14,540 25,703 52,427400 364 760 1,432 2,941 4,407 8,487 13,526 23,912 48,773450 341 714 1,344 2,759 4,135 7,963 12,691 22,436 45,762500 322 674 1,270 2,607 3,905 7,522 11,988 21,193 43,227550 306 640 1,206 2,476 3,709 7,144 11,386 20,128 41,054600 292 611 1,150 2,362 3,539 6,815 10,862 19,202 39,167650 280 585 1,102 2,262 3,389 6,526 10,402 18,389 37,507700 269 562 1,058 2,173 3,255 6,270 9,993 17,666 36,033750 259 541 1,020 2,093 3,136 6,040 9,627 17,019 34,713800 250 523 985 2,021 3,029 5,833 9,297 16,435 33,522850 242 506 953 1,956 2,931 5,645 8,997 15,904 32,440900 235 490 924 1,897 2,842 5,473 8,723 15,420 31,452950 228 476 897 1,842 2,760 5,315 8,471 14,976 30,545

1,000 222 463 873 1,791 2,684 5,170 8,239 14,566 29,7091,100 210 440 829 1,701 2,549 4,910 7,825 13,834 28,2161,200 201 420 791 1,623 2,432 4,684 7,465 13,198 26,9191,300 192 402 757 1,554 2,329 4,485 7,149 12,638 25,7781,400 185 386 727 1,493 2,237 4,309 6,868 12,142 24,7651,500 178 372 701 1,439 2,156 4,151 6,617 11,697 23,8581,600 172 359 677 1,389 2,082 4,009 6,389 11,295 23,0391,700 166 348 655 1,344 2,014 3,880 6,183 10,931 22,2961,800 161 337 635 1,304 1,953 3,761 5,995 10,598 21,6171,900 157 327 617 1,266 1,897 3,653 5,822 10,293 20,9942,000 152 318 600 1,231 1,845 3,553 5,663 10,011 20,419

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Table 12.24 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 11.0 in. WCPressure Drop 0.5 in. WC

Specific Gravity 1.50

SPECIAL USE: Pipe Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance.

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 21/2 3 31/2 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 3.548 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 291 608 1,145 2,352 3,523 6,786 10,815 19,119 27,993 38,99720 200 418 787 1,616 2,422 4,664 7,433 13,141 19,240 26,80230 160 336 632 1,298 1,945 3,745 5,969 10,552 15,450 21,52340 137 287 541 1,111 1,664 3,205 5,109 9,031 13,223 18,42150 122 255 480 984 1,475 2,841 4,528 8,004 11,720 16,32660 110 231 434 892 1,337 2,574 4,103 7,253 10,619 14,79380 94 197 372 763 1,144 2,203 3,774 6,207 9,088 12,661

100 84 175 330 677 1,014 1,952 3,511 5,501 8,055 11,221125 74 155 292 600 899 1,730 3,295 4,876 7,139 9,945150 67 140 265 543 814 1,568 3,112 4,418 6,468 9,011175 62 129 243 500 749 1442 2,758 4,064 8,290200 58 120 227 465 697 1,342 2,499 3,781 5,536 7,712250 51 107 201 412 618 1,189 2,299 3,351 4,906 6,835300 46 97 182 373 560 1,078 2,139 3,036 4,446 6,193350 42 89 167 344 515 991 1,896 2,793 4,090 5,698400 40 83 156 320 479 922 1,718 2,599 3,805 5,301450 37 78 146 300 449 865 1,379 2,438 4,973500 35 73 138 283 424 817 1,303 2,303 4,698550 33 70 131 269 403 776 1,237 2,187 4,462600 32 66 125 257 385 741 1,180 2,087 4,257650 30 64 120 246 368 709 1,130 1,998 4,076700 29 61 115 236 354 681 1,086 1,920 3,916750 28 59 111 227 341 656 1,046 1,850 3,773800 27 57 107 220 329 634 1,010 1,786 3,643850 26 55 104 213 319 613 978 1,728 3,526900 25 53 100 206 309 595 948 1,676 3,418950 25 52 97 200 300 578 921 1,628 3,320

1,000 24 50 95 195 292 562 895 1,583 3,2291,100 23 48 90 185 277 534 850 1,503 3,0671,200 22 46 86 176 264 509 811 1,434 2,9261,300 21 44 82 169 253 487 777 1,374 2,8021,400 20 42 79 162 243 468 746 1,320 2,6911,500 19.3 40 76 156 234 451 719 1,271 2,5931,600 18.7 39 74 151 226 436 694 1,228 2,5041,700 18.1 38 71 146 219 422 672 1,188 2,4231,800 17.5 37 69 142 212 409 652 1,152 2,3491,900 17.0 36 67 138 206 397 633 1,119 2,2822,000 16.5 35 65 134 200 386 615 1,088 2,219

54-131 (Log #99) Rec. continued

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Table 12.25 Semi-Rigid Copper Tubing

Gas Undiluted PropaneInlet pressure 10.0 psi

Pressure Drop 1.0 psiSpecific Gravity 1.50

SPECIAL USE: Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator)

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 513 1,058 2,152 3,760 5,335 11,396 20,516 32,347 67,371 119,19320 352 727 1,479 2,585 3,667 7,832 14,101 22,232 46,303 81,92130 283 584 1,188 2,075 2,944 6,290 11,323 17,853 37,183 65,78540 242 500 1,016 1,776 2,520 5,383 9,691 15,280 31,824 56,30450 215 443 901 1,574 2,234 4,771 8,589 13,542 28,205 49,90160 194 401 816 1,426 2,024 4,323 7,782 12,270 25,556 45,21470 179 369 751 1,312 1,862 3,977 7,160 11,288 23,511 41,59680 166 343 699 1,221 1,732 3,700 6,661 10,502 21,873 38,69790 156 322 655 1,145 1,625 3,471 6,250 9,853 20,522 36,308

100 147 304 619 1,082 1,535 3,279 5,903 9,307 19,385 34,297125 131 270 549 959 1,361 2,906 5,232 8,249 17,181 30,396150 118 244 497 869 1,233 2,633 4,741 7,474 15,567 27,541175 109 225 457 799 1,134 2,423 4,361 6,876 14,321 25,338200 101 209 426 744 1,055 2,254 4,057 6,397 13,323 23,572225 95 196 399 698 990 2,115 3,807 6,002 12,501 22,117250 90 185 377 659 935 1,997 3,596 5,669 11,808 20,891275 85 176 358 626 888 1,897 3,415 5,385 11,215 19,841300 81 168 342 597 847 1,810 3,258 5,137 10,699 18,929

350 75 155 314 549 779 1,665 2,997 4,726 9,843 17,414400 70 144 292 511 725 1,549 2,789 4,397 9,157 16,201450 65 135 274 480 680 1,453 2,616 4,125 8,592 15,201500 62 127 259 453 643 1,373 2,471 3,897 8,116 14,358550 59 121 246 430 610 1,304 2,347 3,701 7,708 13,637600 56 115 235 410 582 1,244 2,239 3,531 7,353 13,010650 54 111 225 393 558 1,191 2,144 3,381 7,042 12,458700 51 106 216 378 536 1,144 2,060 3,248 6,765 11,969750 50 02 208 364 516 1,102 1,985 3,129 6,517 11,530800 48 99 201 351 498 1,065 1,917 3,022 6,294 11,135850 46 96 195 340 482 1,030 1,855 2,924 6,091 10,775900 45 93 189 330 468 999 1,798 2,835 5,905 10,447950 44 90 183 320 454 970 1,746 2,753 5,735 10,146

1,000 42 88 178 311 442 944 1,699 2,678 5,578 9,8681,100 40 83 169 296 420 896 1,613 2,544 5,298 9,3731,200 38 79 161 282 400 855 1,539 2,427 5,054 8,9421,300 37 76 155 270 383 819 1,474 2,324 4,840 8,5631,400 35 73 148 260 368 787 1,416 2,232 4,650 8,2261,500 34 70 143 250 355 758 1,364 2,151 4,479 7,9251,600 33 68 138 241 343 732 1,317 2,077 4,326 7,6531,700 32 66 134 234 331 708 1,275 2,010 4,186 7,4061,800 31 64 130 227 321 687 1,236 1,949 4,059 7,1801,900 30 62 126 220 312 667 1,200 1,892 3,942 6,9732,000 29 60 122 214 304 648 1,167 1,841 3,834 6,783

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

54-131 (Log #99) Rec. continued

54-53

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.26 Semi-Rigid Copper Tubing

Gas Undiluted PropaneInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCSpecific Gravity 1.50

SPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and ApplianceTube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 45 93 188 329 467 997 1,795 2,830 5,895 10,42920 31 64 129 226 321 685 1,234 1,945 4,051 7,16830 25 51 104 182 258 550 991 1,562 3,253 5,75640 21 44 89 155 220 471 848 1,337 2,784 4,92650 19 39 79 138 195 417 752 1,185 2,468 4,36660 17 35 71 125 177 378 681 1,074 2,236 3,95670 16 32 66 115 163 348 626 988 2,057 3,63980 15 30 61 107 152 324 583 919 1,914 3,38690 14 28 57 100 142 304 547 862 1,796 3,177

100 13 27 54 95 134 287 517 814 1,696 3,001125 11 24 48 84 119 254 458 722 1,503 2,660150 10 21 44 76 108 230 415 654 1,362 2,410175 NR 10 20 40 70 99 212 382 602 1,253 2,217200 NR 8.9 18 37 65 92 197 355 560 1,166 2,062225 NR 8.3 17 35 61 87 185 333 525 1,094 1,935250 NR 7.9 16 33 58 82 175 315 496 1,033 1,828275 NR 7.5 15 31 55 78 166 299 471 981 1,736300 NR 7.1 15 30 52 74 158 285 449 936 1,656

350 NR 14 28 48 68 146 262 414 861 1,524400

NR13 26 45 63 136 244 385 801 1,418

450NR

12 24 42 60 127 229 361 752 1,330500

NR11 23 40 56 120 216 341 710 1,256

550NR

10.6 22 38 53 114 205 324 674 1,193600

NR10.1 21 36 51 109 196 309 643 1,138

650NR

NR 20 34 49 104 188 296 616 1,090700

NRNR 19 33 47 100 180 284 592 1,047

750NR

NR 18 32 45 96 174 274 570 1,009800

NRNR 17.6 31 44 93 168 264 551 974

850NR

NR 17.0 30 42 90 162 256 533 943900

NRNR 16.5 29 41 87 157 248 517 914

950NR

NR 16.0 28 40 85 153 241 502 8881,000

NRNR 15.6 27 39 83 149 234 488 863

1,100NR

NR 14.8 26 37 78 141 223 464 8201,200

NRNR 14.1 25 35 75 135 212 442 782

1,300NR

NR 13.5 24 34 72 129 203 423 7491,400

NRNR 13.0 23 32 69 124 195 407 720

1,500NR

NR 12.5 22 31 66 119 188 392 6931,600

NRNR 12.1 21 30 64 115 182 378 670

1,700NR

NR 11.7 20.4 29 62 112 176 366 6481,800

NRNR 11.3 19.8 28 60 108 170 355 628

1,900NR

NR 11.0 19.2 27.3 58 105 166 345 6102,000

NRNR 10.7 18.7 26.6 57 102 161 335 593

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

54-131 (Log #99) Rec. continued

54-54

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.27 Semi-Rigid Copper TubingGas Undiluted Propane

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 1.50

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 21/8 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 413 852 1,732 3,027 4,295 9,175 16,517 26,042 54,240 95,96220 284 585 1,191 2,081 2,952 6,306 11,352 17,899 37,279 65,95430 228 470 956 1,671 2,371 5,064 9,116 14,373 29,936 52,96340 195 402 818 1,430 2,029 4,334 7,802 12,302 25,621 45,33050 173 356 725 1,267 1,798 3,841 6,915 10,903 22,708 40,17560 157 323 657 1,148 1,629 3,480 6,266 9,879 20,575 36,40170 144 297 605 1,057 1,499 3,202 5,764 9,088 18,929 33,48980 134 276 562 983 1,394 2,979 5,363 8,455 17,609 31,15590 126 259 528 922 1,308 2,795 5,031 7,933 16,522 29,232

100 119 245 498 871 1,236 2,640 4,753 7,493 15,607 27,612125 105 217 442 772 1,095 2,340 4,212 6,641 13,832 24,472150 95 197 400 700 992 2,120 3,817 6,017 12,533 22,173175 88 181 368 644 913 1,950 3,511 5,536 11,530 20,399200 82 168 343 599 849 1,814 3,267 5,150 10,727 18,978225 77 158 321 562 797 1,702 3,065 4,832 10,064 17,806250 72 149 304 531 753 1,608 2,895 4,564 9,507 16,819275 69 142 288 504 715 1,527 2,750 4,335 9,029 15,974300 66 135 275 481 682 1,457 2,623 4,136 8,614 15,240

350 60 124 253 442 628 1,340 2,413 3,805 7,925 14,020400 56 116 235 411 584 1,247 2,245 3,540 7,372 13,043450 53 109 221 386 548 1,170 2,106 3,321 6,917 12,238500 50 103 209 365 517 1,105 1,990 3,137 6,534 11,560550 47 97 198 346 491 1,050 1,890 2,979 6,206 10,979600 45 93 189 330 469 1,001 1,803 2,842 5,920 10,474650 43 89 181 316 449 959 1,726 2,722 5,669 10,030700 41 86 174 304 431 921 1,659 2,615 5,447 9,636750 40 82 168 293 415 888 1,598 2,519 5,247 9,283800 39 80 162 283 401 857 1,543 2,433 5,067 8,965850 37 77 157 274 388 829 1,493 2,354 4,903 8,675900 36 75 152 265 376 804 1,448 2,283 4,754 8,411950 35 72 147 258 366 781 1,406 2,217 4,617 8,169

1,000 34 71 143 251 356 760 1,368 2,156 4,491 7,9451,100 32 67 136 238 338 721 1,299 2,048 4,265 7,5461,200 31 64 130 227 322 688 1,239 1,954 4,069 7,1991,300 30 61 124 217 309 659 1,187 1,871 3,896 6,8941,400 28 59 120 209 296 633 1,140 1,797 3,743 6,6231,500 27 57 115 201 286 610 1,098 1,731 3,606 6,3801,600 26 55 111 194 276 589 1,061 1,672 3,482 6,1611,700 26 53 108 188 267 570 1,026 1,618 3,370 5,9621,800 25 51 104 182 259 553 995 1,569 3,267 5,7811,900 24 50 101 177 251 537 966 1,524 3,173 5,6142,000 23 48 99 172 244 522 940 1,482 3,086 5,461

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

54-131 (Log #99) Rec. continued

54-55

Report on Proposals — Copyright, NFPA NFPA 54 54-131 (Log #99) Rec. continued

54-56

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.1 Schedule 40 Metallic PipeGas Natural

Inlet pressure 0.50 psi or lessPressure Drop 0.3 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/43/8

1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.364 0.493 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 32 72 132 278 520 1,050 1,600 3,050 4,800 8,500 17,50020 22 49 92 190 350 730 1,100 2,100 3,300 5,900 12,00030 18 40 73 152 285 590 890 1,650 2,700 4,700 9,70040 15 34 63 130 245 500 760 1,450 2,300 4,100 8,30050 14 30 56 115 215 440 670 1,270 2,000 3,600 7,40060 12 27 50 105 195 400 610 1,150 1,850 3,250 6,80070 11 25 46 96 180 370 560 1,050 1,700 3,000 6,20080 11 23 43 90 170 350 530 990 1,600 2,800 5,80090 10 22 40 84 160 320 490 930 1,500 2,600 5,400

100 9 21 38 79 150 305 460 870 1,400 2,500 5,100125 8 18 34 72 130 275 410 780 1,250 2,200 4,500150 8 17 31 64 120 250 380 710 1,130 2,000 4,100175 7 15 28 59 110 225 350 650 1,050 1,850 3,800200 6 14 26 55 100 210 320 610 980 1,700 3,500

Table 12.2 Schedule 40 Metallic PipeGas Natural

Inlet pressure 0.50 psi or lessPressure Drop 0.5 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/43/8

1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.364 0.493 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 43 95 175 360 680 1,400 2,100 3,950 6,300 11,000 23,00020 29 65 120 250 465 950 1,460 2,750 4,350 7,700 15,80030 24 52 97 200 375 770 1,180 2,200 3,520 6,250 12,80040 20 45 82 170 320 660 990 1,900 3,000 5,300 10,90050 18 40 73 151 285 580 900 1,680 2,650 4,750 9,70060 16 36 66 138 260 530 810 1,520 2,400 4,300 8,80070 15 33 61 125 240 490 750 1,400 2,250 3,900 8,10080 14 31 57 118 220 460 690 1,300 2,050 3,700 7,50090 13 29 53 110 205 430 650 1,220 1,950 3,450 7,200

100 12 27 50 103 195 400 620 1,150 1,850 3,250 6,700125 11 24 44 93 175 360 550 1,020 1,650 2,950 6,000150 10 22 40 84 160 325 500 950 1,500 2,650 5,500175 9 20 37 77 145 300 460 850 1,370 2,450 5,000200 8 19 35 72 135 280 430 800 1,280 2,280 4,600

54-131 (Log #99) C. A.

54-57

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.5 Schedule 40 Metallic PipeGas Natural

Inlet pressure 1.0 psi or lessPressure Drop 0.3 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1 11/4 11/2 2 21/2 3 31/2 4 5 6 8 10 12

Actual ID 1.049 1.380 1.610 2.067 2.469 3.068 3.548 4.026 5.047 6.065 7.981 10.020 11.938

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

50 215 442 662 1,275 2,033 3,594 5,262 7,330 13,261 21,472 44,118 80,130 126,855

100 148 304 455 877 1,397 2,470 3,616 5,038 9,114 14,758 30,322 55,073 87,187

150 119 244 366 704 1,122 1,983 2,904 4,046 7,319 11,851 24,350 44,225 70,014

200 102 209 313 602 960 1,698 2,485 3,462 6,264 10,143 20,840 37,851 59,923

250 90 185 277 534 851 1,505 2,203 3,069 5,552 8,990 18,470 33,547 53,109

300 82 168 251 484 771 1,363 1,996 2,780 5,030 8,145 16,735 30,396 48,120

400 70 143 215 414 660 1,167 1,708 2,380 4,305 6,971 14,323 26,015 41,185

500 62 127 191 367 585 1,034 1,514 2,109 3,816 6,178 12,694 23,056 36,501

1,000 43 87 131 252 402 711 1,041 1,450 2,623 4,246 8,725 15,847 25,087

1,500 34 70 105 203 323 571 836 1,164 2,106 3,410 7,006 12,725 20,146

2,000 29 60 90 173 276 488 715 996 1,802 2,919 5,997 10,891 17,242

Table 12.6 Schedule 40 Metallic PipeGas Natural

Inlet pressure 1.0 psi or lessPressure Drop 0.5 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1 11/4 11/2 2 21/2 3 31/2 4 5 6 8 10 12

Actual ID 1.049 1.380 1.610 2.067 2.469 3.068 3.548 4.026 5.047 6.065 7.981 10.020 11.938

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

50 284 583 873 1,681 2,680 4,738 6,937 9,663 17,482 28,308 58,161 105,636 167,236

100 195 400 600 1,156 1,842 3,256 4,767 6,641 12,015 19,456 39,974 72,603 114,940

150 157 322 482 928 1,479 2,615 3,828 5,333 9,649 15,624 32,100 58,303 92,301

200 134 275 412 794 1,266 2,238 3,277 4,565 8,258 13,372 27,474 49,900 78,998

250 119 244 366 704 1,122 1,983 2,904 4,046 7,319 11,851 24,350 44,225 70,014

300 108 221 331 638 1,017 1,797 2,631 3,666 6,632 10,738 22,062 40,071 63,438

400 92 189 283 546 870 1,538 2,252 3,137 5,676 9,190 18,883 34,296 54,295

500 82 168 251 484 771 1,363 1,996 2,780 5,030 8,145 16,735 30,396 48,120

1,000 56 115 173 333 530 937 1,372 1,911 3,457 5,598 11,502 20,891 33,073

1,500 45 93 139 267 426 752 1,102 1,535 2,776 4,496 9,237 16,776 26,559

2,000 39 79 119 229 364 644 943 1,313 2,376 3,848 7,905 14,358 22,731

54-131 (Log #99) C. A. continued

54-58

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.1 Schedule 40 Metallic PipeGas Natural

Inlet pressure Less than 2 psiPressure Drop 0.3 in. WC

Specific Gravity 0.60Pipe Size (in.)

Nominal 1/23/4 1 1 1⁄4 11/2 2 21/2 3 4 5 6 8 10 12

Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938Length (ft) Capacity in Cubic Feet of Gas per Hour

10 131 273 514 1,060 1,580 3,050 4,860 8,580 17,500 31,700 51,300 105,000 191,000 303,00020 90 188 353 726 1,090 2,090 3,340 5,900 12,000 21,800 35,300 72,400 132,000 208,00030 72 151 284 583 873 1,680 2,680 4,740 9,660 17,500 28,300 58,200 106,000 167,00040 62 129 243 499 747 1,440 2,290 4,050 8,270 15,000 24,200 49,800 90,400 143,00050 55 114 215 442 662 1,280 2,030 3,590 7,330 13,300 21,500 44,100 80,100 127,00060 50 104 195 400 600 1,160 1,840 3,260 6,640 12,000 19,500 40,000 72,600 115,00070 46 95 179 368 552 1,060 1,690 3,000 6,110 11,100 17,900 36,800 66,800 106,00080 42 89 167 343 514 989 1,580 2,790 5,680 10,300 16,700 34,200 62,100 98,40090 40 83 157 322 482 928 1,480 2,610 5,330 9,650 15,600 32,100 58,300 92,300

100 38 79 148 304 455 877 1,400 2,470 5,040 9,110 14,800 30,300 55,100 87,200125 33 70 131 269 403 777 1,240 2,190 4,460 8,080 13,100 26,900 48,800 77,300150 30 63 119 244 366 704 1,120 1,980 4,050 7,320 11,900 24,300 44,200 70,000175 28 58 109 224 336 648 1,030 1,820 3,720 6,730 10,900 22,400 40,700 64,400200 26 54 102 209 313 602 960 1,700 3,460 6,260 10,100 20,800 37,900 59,900250 23 48 90 185 277 534 851 1,500 3,070 5,550 8,990 18,500 33,500 53,100300 21 43 82 168 251 484 771 1,360 2,780 5,030 8,150 16,700 30,400 48,100350 19 40 75 154 231 445 709 1,250 2,560 4,630 7,490 15,400 28,000 44,300400 18 37 70 143 215 414 660 1,170 2,380 4,310 6,970 14,300 26,000 41,200450 17 35 66 135 202 389 619 1,090 2,230 4,040 6,540 13,400 24,400 38,600500 16 33 62 127 191 367 585 1,030 2,110 3,820 6,180 12,700 23,100 36,500550 15 31 59 121 181 349 556 982 2,000 3,620 5,870 12,100 21,900 34,700600 14 30 56 115 173 333 530 937 1,910 3,460 5,600 11,500 20,900 33,100650 14 29 54 110 165 318 508 897 1,830 3,310 5,360 11,000 20,000 31,700700 13 27 52 106 159 306 488 862 1,760 3,180 5,150 10,600 19,200 30,400750 13 26 50 102 153 295 470 830 1,690 3,060 4,960 10,200 18,500 29,300800 12 26 48 99 148 285 454 802 1,640 2,960 4,790 9,840 17,900 28,300850 12 25 46 95 143 275 439 776 1,580 2,860 4,640 9,530 17,300 27,400900 11 24 45 93 139 267 426 752 1,530 2,780 4,500 9,240 16,800 26,600950 11 23 44 90 135 259 413 731 1,490 2,700 4,370 8,970 16,300 25,800

1,000 11 23 43 87 131 252 402 711 1,450 2,620 4,250 8,720 15,800 25,1001,100 10 21 40 83 124 240 382 675 1,380 2,490 4,030 8,290 15,100 23,8001,200 NA 20 39 79 119 229 364 644 1,310 2,380 3,850 7,910 14,400 22,7001,300 NA 20 37 76 114 219 349 617 1,260 2,280 3,680 7,570 13,700 21,8001,400 NA 19 35 73 109 210 335 592 1,210 2,190 3,540 7,270 13,200 20,9001,500 NA 18 34 70 105 203 323 571 1,160 2,110 3,410 7,010 12,700 20,1001,600 NA 18 33 68 102 196 312 551 1,120 2,030 3,290 6,770 12,300 19,5001,700 NA 17 32 66 98 189 302 533 1,090 1,970 3,190 6,550 11,900 18,8001,800 NA 16 31 64 95 184 293 517 1,050 1,910 3,090 6,350 11,500 18,3001,900 NA 16 30 62 93 178 284 502 1,020 1,850 3,000 6,170 11,200 17,7002,000 NA 16 29 60 90 173 276 488 1,000 1,800 2,920 6,000 10,900 17,200

NA means a flow of less than 10 cfh

54-131 (Log #99) C. A. continued

54-59

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.2 Schedule 40 Metallic PipeGas Natural

Inlet pressure Less than 2 psiPressure Drop 0.5 in. WC

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4 5 6 8 10 12Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938

Length (ft) Capacity in Cubic Feet of Gas per Hour10 172 360 678 1,390 2,090 4,020 6,400 11,300 23,100 41,800 67,600 139,000 252,000 399,00020 118 247 466 957 1,430 2,760 4,400 7,780 15,900 28,700 46,500 95,500 173,000 275,00030 95 199 374 768 1,150 2,220 3,530 6,250 12,700 23,000 37,300 76,700 139,000 220,00040 81 170 320 657 985 1,900 3,020 5,350 10,900 19,700 31,900 65,600 119,000 189,00050 72 151 284 583 873 1,680 2,680 4,740 9,660 17,500 28,300 58,200 106,000 167,00060 65 137 257 528 791 1,520 2,430 4,290 8,760 15,800 25,600 52,700 95,700 152,00070 60 126 237 486 728 1,400 2,230 3,950 8,050 14,600 23,600 48,500 88,100 139,00080 56 117 220 452 677 1,300 2,080 3,670 7,490 13,600 22,000 45,100 81,900 130,00090 52 110 207 424 635 1,220 1,950 3,450 7,030 12,700 20,600 42,300 76,900 122,000

100 50 104 195 400 600 1,160 1,840 3,260 6,640 12,000 19,500 40,000 72,600 115,000125 44 92 173 355 532 1,020 1,630 2,890 5,890 10,600 17,200 35,400 64,300 102,000150 40 83 157 322 482 928 1,480 2,610 5,330 9,650 15,600 32,100 58,300 92,300175 37 77 144 296 443 854 1,360 2,410 4,910 8,880 14,400 29,500 53,600 84,900200 34 71 134 275 412 794 1,270 2,240 4,560 8,260 13,400 27,500 49,900 79,000250 30 63 119 244 366 704 1,120 1,980 4,050 7,320 11,900 24,300 44,200 70,000300 27 57 108 221 331 638 1,020 1,800 3,670 6,630 10,700 22,100 40,100 63,400350 25 53 99 203 305 587 935 1,650 3,370 6,100 9,880 20,300 36,900 58,400400 23 49 92 189 283 546 870 1,540 3,140 5,680 9,190 18,900 34,300 54,300450 22 46 86 177 266 512 816 1,440 2,940 5,330 8,620 17,700 32,200 50,900500 21 43 82 168 251 484 771 1,360 2,780 5,030 8,150 16,700 30,400 48,100550 20 41 78 159 239 459 732 1,290 2,640 4,780 7,740 15,900 28,900 45,700600 19 39 74 152 228 438 699 1,240 2,520 4,560 7,380 15,200 27,500 43,600650 18 38 71 145 218 420 669 1,180 2,410 4,360 7,070 14,500 26,400 41,800700 17 36 68 140 209 403 643 1,140 2,320 4,190 6,790 14,000 25,300 40,100750 17 35 66 135 202 389 619 1,090 2,230 4,040 6,540 13,400 24,400 38,600800 16 34 63 130 195 375 598 1,060 2,160 3,900 6,320 13,000 23,600 37,300850 16 33 61 126 189 363 579 1,020 2,090 3,780 6,110 12,600 22,800 36,100900 15 32 59 122 183 352 561 992 2,020 3,660 5,930 12,200 22,100 35,000950 15 31 58 118 178 342 545 963 1,960 3,550 5,760 11,800 21,500 34,000

1,000 14 30 56 115 173 333 530 937 1,910 3,460 5,600 11,500 20,900 33,1001,100 14 28 53 109 164 316 503 890 1,810 3,280 5,320 10,900 19,800 31,4001,200 13 27 51 104 156 301 480 849 1,730 3,130 5,070 10,400 18,900 30,0001,300 12 26 49 100 150 289 460 813 1,660 3,000 4,860 9,980 18,100 28,7001,400 12 25 47 96 144 277 442 781 1,590 2,880 4,670 9,590 17,400 27,6001,500 11 24 45 93 139 267 426 752 1,530 2,780 4,500 9,240 16,800 26,6001,600 11 23 44 89 134 258 411 727 1,480 2,680 4,340 8,920 16,200 25,6001,700 11 22 42 86 130 250 398 703 1,430 2,590 4,200 8,630 15,700 24,8001,800 10 22 41 84 126 242 386 682 1,390 2,520 4,070 8,370 15,200 24,1001,900 10 21 40 81 122 235 375 662 1,350 2,440 3,960 8,130 14,800 23,4002,000 NA 20 39 79 119 229 364 644 1,310 2,380 3,850 7,910 14,400 22,700

NA means a flow of less than 10 cfh.

54-131 (Log #99) C. A. continued

54-60

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.3 Schedule 40 Metallic PipeGas Natural

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 1,506 3,041 5,561 11,415 17,106 32,944 52,505 92,819 189,32620 1,065 2,150 3,932 8,072 12,096 23,295 37,127 65,633 133,87330 869 1,756 3,211 6,591 9,876 19,020 30,314 53,589 109,30740 753 1,521 2,781 5,708 8,553 16,472 26,253 46,410 94,66350 673 1,360 2,487 5,105 7,650 14,733 23,481 41,510 84,66960 615 1,241 2,270 4,660 6,983 13,449 21,435 37,893 77,29270 569 1,150 2,102 4,315 6,465 12,452 19,845 35,082 71,55880 532 1,075 1,966 4,036 6,048 11,647 18,563 32,817 66,93790 502 1,014 1,854 3,805 5,702 10,981 17,502 30,940 63,109

100 462 934 1,708 3,508 5,257 10,125 16,138 28,530 58,194125 414 836 1,528 3,138 4,702 9,056 14,434 25,518 52,050150 372 751 1,373 2,817 4,222 8,130 12,960 22,911 46,732175 344 695 1,271 2,608 3,909 7,527 11,999 21,211 43,265200 318 642 1,174 2,413 3,613 6,959 11,093 19,608 39,99710 1,510 3,040 5,560 11,400 17,100 32,900 52,500 92,800 189,00020 1,070 2,150 3,930 8,070 12,100 23,300 37,100 65,600 134,00030 869 1,760 3,210 6,590 9,880 19,000 30,300 53,600 109,00040 753 1,520 2,780 5,710 8,550 16,500 26,300 46,400 94,70050 673 1,360 2,490 5,110 7,650 14,700 23,500 41,500 84,70060 615 1,240 2,270 4,660 6,980 13,500 21,400 37,900 77,30070 569 1,150 2,100 4,320 6,470 12,500 19,900 35,100 71,60080 532 1,080 1,970 4,040 6,050 11,700 18,600 32,800 67,00090 502 1,010 1,850 3,810 5,700 11,000 17,500 30,900 63,100

100 462 934 1,710 3,510 5,260 10,100 16,100 28,500 58,200125 414 836 1,530 3,140 4,700 9,060 14,400 25,500 52,100150 372 751 1,370 2,820 4,220 8,130 13,000 22,900 46,700175 344 695 1,270 2,601 3,910 7,530 12,000 21,200 43,300200 318 642 1,170 2,410 3,610 6,960 11,100 19,600 40,000250 279 583 1,040 2,140 3,210 6,180 9,850 17,400 35,500300 253 528 945 1,940 2,910 5,600 8,920 15,800 32,200350 232 486 869 1,790 2,670 5,150 8,210 14,500 29,600400 216 452 809 1,660 2,490 4,790 7,640 13,500 27,500450 203 424 759 1,560 2,330 4,500 7,170 12,700 25,800500 192 401 717 1,470 2,210 4,250 6,770 12,000 24,400550 182 381 681 1,400 2,090 4,030 6,430 11,400 23,200600 174 363 650 1,330 2,000 3,850 6,130 10,800 22,100650 166 348 622 1,280 1,910 3,680 5,870 10,400 21,200700 160 334 598 1,230 1,840 3,540 5,640 9,970 20,300750 154 322 576 1,180 1,770 3,410 5,440 9,610 19,600800 149 311 556 1,140 1,710 3,290 5,250 9,280 18,900850 144 301 538 1,100 1,650 3,190 5,080 8,980 18,300900 139 292 522 1,070 1,600 3,090 4,930 8,710 17,800950 135 283 507 1,040 1,560 3,000 4,780 8,460 17,200

1000 132 275 493 1,010 1,520 2,920 4,650 8,220 16,8001100 125 262 468 960 1,440 2,770 4,420 7,810 15,9001200 119 250 446 917 1,370 2,640 4,220 7,450 15,2001300 114 239 427 878 1,320 2,530 4,040 7,140 14,6001400 110 230 411 843 1,260 2,430 3,880 6,860 14,0001500 106 221 396 812 1,220 2,340 3,740 6,600 13,5001600 102 214 382 784 1,180 2,260 3,610 6,380 13,0001700 99 207 370 759 1,140 2,190 3,490 6,170 12,6001800 96 200 358 736 1,100 2,120 3,390 5,980 12,2001900 93 195 348 715 1,070 2,060 3,290 5,810 11,9002000 91 189 339 695 1,040 2,010 3,200 5,650 11,500

54-131 (Log #99) C. A. continued

54-61

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.4 Schedule 40 Metallic PipeGas Natural

Inlet pressure 5.0 psiPressure Drop 3.5 psi

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 3,185 6,434 11,766 24,161 36,206 69,727 111,133 196,468 400,73220 2,252 4,550 8,320 17,084 25,602 49,305 78,583 138,924 283,36130 1,839 3,715 6,793 13,949 20,904 40,257 64,162 113,431 231,36340 1,593 3,217 5,883 12,080 18,103 34,864 55,566 98,234 200,36650 1,425 2,878 5,262 10,805 16,192 31,183 49,700 87,863 179,21360 1,301 2,627 4,804 9,864 14,781 28,466 45,370 80,208 163,59870 1,204 2,432 4,447 9,132 13,685 26,354 42,004 74,258 151,46380 1,153 2,330 4,260 8,542 12,801 24,652 39,291 69,462 141,68090 1,062 2,145 3,922 8,054 12,069 23,242 37,044 65,489 133,577

100 979 1,978 3,617 7,427 11,128 21,433 34,159 60,387 123,173125 876 1,769 3,235 6,643 9,953 19,170 30,553 54,012 110,169150 786 1,589 2,905 5,964 8,937 17,211 27,431 48,494 98,911175 728 1,471 2,690 5,522 8,274 15,934 25,396 44,897 91,574200 673 1,360 2,487 5,104 7,649 14,729 23,478 41,504 84,65610 3,190 6,430 11,800 24,200 36,200 69,700 111,000 196,000 401,00020 2,250 4,550 8,320 17,100 25,600 49,300 78,600 139,000 283,00030 1,840 3,720 6,790 14,000 20,900 40,300 64,200 113,000 231,00040 1,590 3,220 5,880 12,100 18,100 34,900 55,600 98,200 200,00050 1,430 2,880 5,260 10,800 16,200 31,200 49,700 87,900 179,00060 1,300 2,630 4,800 9,860 14,800 28,500 45,400 80,200 164,00070 1,200 2,430 4,450 9,130 13,700 26,400 42,000 74,300 151,00080 1,150 2,330 4,260 8,540 12,800 24,700 39,300 69,500 142,00090 1,060 2,150 3,920 8,050 12,100 23,200 37,000 65,500 134,000

100 979 1,980 3,620 7,430 11,100 21,400 34,200 60,400 123,000125 876 1,770 3,240 6,640 9,950 19,200 30,600 54,000 110,000150 786 1,590 2,910 5,960 8,940 17,200 27,400 48,500 98,900175 728 1,470 2,690 5,520 8,270 15,900 25,400 44,900 91,600200 673 1,360 2,490 5,100 7,650 14,700 23,500 41,500 84,700250 558 1,170 2,200 4,510 6,760 13,000 20,800 36,700 74,900300 506 1,060 1,990 4,090 6,130 11,800 18,800 33,300 67,800350 465 973 1,830 3,760 5,640 10,900 17,300 30,600 62,400400 433 905 1,710 3,500 5,250 10,100 16,100 28,500 58,100450 406 849 1,600 3,290 4,920 9,480 15,100 26,700 54,500500 384 802 1,510 3,100 4,650 8,950 14,300 25,200 51,500550 364 762 1,440 2,950 4,420 8,500 13,600 24,000 48,900600 348 727 1,370 2,810 4,210 8,110 12,900 22,900 46,600650 333 696 1,310 2,690 4,030 7,770 12,400 21,900 44,600700 320 669 1,260 2,590 3,880 7,460 11,900 21,000 42,900750 308 644 1,210 2,490 3,730 7,190 11,500 20,300 41,300800 298 622 1,170 2,410 3,610 6,940 11,100 19,600 39,900850 288 602 1,130 2,330 3,490 6,720 10,700 18,900 38,600900 279 584 1,100 2,260 3,380 6,520 10,400 18,400 37,400950 271 567 1,070 2,190 3,290 6,330 10,100 17,800 36,400

1,000 264 551 1,040 2,130 3,200 6,150 9,810 17,300 35,4001,100 250 524 987 2,030 3,030 5,840 9,320 16,500 33,6001,200 239 500 941 1,930 2,900 5,580 8,890 15,700 32,0001,300 229 478 901 1,850 2,770 5,340 8,510 15,000 30,7001,400 220 460 866 1,780 2,660 5,130 8,180 14,500 29,5001,500 212 443 834 1,710 2,570 4,940 7,880 13,900 28,4001,600 205 428 806 1,650 2,480 4,770 7,610 13,400 27,4001,700 198 414 780 1,600 2,400 4,620 7,360 13,000 26,5001,800 192 401 756 1,550 2,330 4,480 7,140 12,600 25,7001,900 186 390 734 1,510 2,260 4,350 6,930 12,300 25,0002,000 181 379 714 1,470 2,200 4,230 6,740 11,900 24,300

54-131 (Log #99) C. A. continued

54-62

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.7 Semi-Rigid Copper TubingGas Natural

Inlet pressure 0.5 psi or less Less than 2 psiPressure Drop 0.3 in. WC

Specific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 20 42 85 148 210 448 806 1,271 2,646 4,68220 14 29 58 102 144 308 554 873 1,819 3,21830 11 23 47 82 116 247 445 701 1,461 2,58440 10 20 40 70 99 211 381 600 1,250 2,21250 8.4 17 35 62 88 187 337 532 1,108 1,96060 7.6 16 32 56 79 170 306 482 1,004 1,77670 7.0 14 29 52 73 156 281 443 924 1,63480 6.5 13 27 48 68 145 262 413 859 1,52090 6.1 13 26 45 64 136 245 387 806 1,426

100 5.8 12 24 43 60 129 232 366 761 1,347125 5.1 11 22 38 53 114 206 324 675 1,194150 4.7 10 20 34 48 103 186 294 612 1,082175 4.3 8.8 18 31 45 95 171 270 563 995200 4.0 8.2 17 29 41 89 159 251 523 926250 3.5 7.3 15 26 37 78 141 223 464 821300 3.2 6.6 13 23 33 71 128 202 420 74410 20 42 85 148 210 448 806 1,270 2,65020 14 29 58 102 144 308 554 873 1,82030 11 23 47 82 116 247 445 701 1,46040 10 20 40 70 99 211 381 600 1,25050 NA 17 35 62 88 187 337 532 1,11060 NA 16 32 56 79 170 306 482 1,00070 NA 14 29 52 73 156 281 443 92480 NA 13 27 48 68 145 262 413 85990 NA 13 26 45 64 136 245 387 806

100 NA 12 24 43 60 129 232 366 761125 NA 11 22 38 53 114 206 324 675150 NA 10 20 34 48 103 186 294 612175 NA NA 18 31 45 95 171 270 563200 NA NA 17 29 41 89 159 251 523250 NA NA 15 26 37 78 141 223 464300 NA NA 13 23 33 71 128 202 420350 NA NA 12 22 31 65 118 186 387400 NA NA 11 20 28 61 110 173 360450 NA NA 11 19 27 57 103 162 338500 NA NA 10 18 25 54 97 153 319550 NA NA NA 17 24 51 92 145 303600 NA NA NA 16 23 49 88 139 289650 NA NA NA 15 22 47 84 133 277700 NA NA NA 15 21 45 81 128 266750 NA NA NA 14 20 43 78 123 256800 NA NA NA 14 20 42 75 119 247850 NA NA NA 13 19 40 73 115 239900 NA NA NA 13 18 39 71 111 232950 NA NA NA 13 18 38 69 108 225

1,000 NA NA NA 12 17 37 67 105 2191,100 NA NA NA 12 16 35 63 100 2081,200 NA NA NA 11 16 34 60 95 1991,300 NA NA NA 11 15 32 58 91 1901,400 NA NA NA 10 14 31 56 88 183 3231,500 NA NA NA NA 14 30 54 84 176 3111,600 NA NA NA NA 13 29 52 82 170 3011,700 NA NA NA NA 13 28 50 79 164 2911,800 NA NA NA NA 13 27 49 77 159 2821,900 NA NA NA NA 12 26 47 74 155 2742,000 NA NA NA NA 12 25 46 72 151 266Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

NA means a flow of less than 10 cfh.

54-63

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.8 Semi-Rigid Copper TubingGas Natural

Inlet pressure 0.5 psi or less Less than 2 psi Pressure Drop 0.5 in. WC

Specific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 27 55 111 195 276 590 1,062 1,675 3,489 6,173

20 18 38 77 134 190 406 730 1,151 2,398 4,242

30 15 30 61 107 152 326 586 925 1,926 3,407

40 13 26 53 92 131 279 502 791 1,648 2,916

50 11 23 47 82 116 247 445 701 1,461 2,584

60 10 21 42 74 105 224 403 635 1,323 2,341

70 9.3 19 39 68 96 206 371 585 1,218 2,154

80 8.6 18 36 63 90 192 345 544 1,133 2,00490 8.1 17 34 59 84 180 324 510 1,063 1,880

100 7.6 16 32 56 79 170 306 482 1,004 1,776125 6.8 14 28 50 70 151 271 427 890 1,574

150 6.1 13 26 45 64 136 245 387 806 1,426

175 5.6 12 24 41 59 125 226 356 742 1,312

200 5.2 11 22 39 55 117 210 331 690 1,221

250 4.7 10 20 34 48 103 186 294 612 1,082300 4.2 8.7 18 31 44 94 169 266 554 98010 27 55 111 195 276 590 1,060 1,680 3,49020 18 38 77 134 190 406 730 1,150 2,40030 15 30 61 107 152 326 586 925 1,93040 13 26 53 92 131 279 502 791 1,65050 11 23 47 82 116 247 445 701 1,46060 10 21 42 74 105 224 403 635 1,32070 NA 19 39 68 96 206 371 585 1,22080 NA 18 36 63 90 192 345 544 1,13090 NA 17 34 59 84 180 324 510 1,060

100 NA 16 32 56 79 170 306 482 1,000125 NA 14 28 50 70 151 271 427 890150 NA 13 26 45 64 136 245 387 806175 NA 12 24 41 59 125 226 356 742200 NA 11 22 39 55 117 210 331 690250 NA NA 20 34 48 103 186 294 612300 NA NA 18 31 44 94 169 266 554350 NA NA 16 28 40 86 155 245 510400 NA NA 15 26 38 80 144 228 474450 NA NA 14 25 35 75 135 214 445500 NA NA 13 23 33 71 128 202 420550 NA NA 13 22 32 68 122 192 399600 NA NA 12 21 30 64 116 183 381650 NA NA 12 20 29 62 111 175 365700 NA NA 11 20 28 59 107 168 350750 NA NA 11 19 27 57 103 162 338800 NA NA 10 18 26 55 99 156 326850 NA NA 10 18 25 53 96 151 315900 NA NA NA 17 24 52 93 147 306950 NA NA NA 17 24 50 90 143 297

1,000 NA NA NA 16 23 49 88 139 2891,100 NA NA NA 15 22 46 84 132 2741,200 NA NA NA 15 21 44 80 126 2621,300 NA NA NA 14 20 42 76 120 2511,400 NA NA NA 13 19 41 73 116 2411,500 NA NA NA 13 18 39 71 111 2321,600 NA NA NA 13 18 38 68 108 2241,700 NA NA NA 12 17 37 66 104 2171,800 NA NA NA 12 17 36 64 101 2101,900 NA NA NA 11 16 35 62 98 2042,000 NA NA NA 11 16 34 60 95 199Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

NA means a flow of less than 10 cfh.

54-64

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.9 Semi-Rigid Copper Tubing

Gas NaturalInlet pressure 0.5 psi or less

Less than 2 psiPressure Drop 1.0 in. WC

Specific Gravity 0.60

SPECIAL USE: Use this Table to Size Tubing from House Line Regulator to the Appliance.

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 39 80 162 283 402 859 1,546 2,437 5,076 8,981

20 27 55 111 195 276 590 1,062 1,675 3,489 6,173

30 21 44 89 156 222 474 853 1,345 2,802 4,957

40 18 38 77 134 190 406 730 1,151 2,398 4,242

50 16 33 68 119 168 359 647 1,020 2,125 3,760

60 15 30 61 107 152 326 586 925 1,926 3,407

70 13 28 57 99 140 300 539 851 1,772 3,134

80 13 26 53 92 131 279 502 791 1,648 2,916

90 12 24 49 86 122 262 471 742 1,546 2,736

100 11 23 47 82 116 247 445 701 1,461 2,584

125 9.8 20 41 72 103 219 394 622 1,295 2,290

150 8.9 18 37 65 93 198 357 563 1,173 2,075

175 8.2 17 34 60 85 183 329 518 1,079 1,909

200 7.6 16 32 56 79 170 306 482 1,004 1,776

250 6.8 14 28 50 70 151 271 427 890 1,574

300 6.1 13 26 45 64 136 245 387 806 1,42610 39 80 162 283 402 859 1,550 2,440 5,08020 27 55 111 195 276 590 1,060 1,680 3,49030 21 44 89 156 222 474 853 1,350 2,80040 18 38 77 134 190 406 730 1,150 2,40050 16 33 68 119 168 359 647 1,020 2,13060 15 30 61 107 152 326 586 925 1,93070 13 28 57 99 140 300 539 851 1,77080 13 26 53 92 131 279 502 791 1,65090 12 24 49 86 122 262 471 742 1,550

100 11 23 47 82 116 247 445 701 1,460125 NA 20 41 72 103 219 394 622 1,290150 NA 18 37 65 93 198 357 563 1,170175 NA 17 34 60 85 183 329 518 1,080200 NA 16 32 56 79 170 306 482 1,000250 NA 14 28 50 70 151 271 427 890300 NA 13 26 45 64 136 245 387 806350 NA 12 24 41 59 125 226 356 742400 NA 11 22 39 55 117 210 331 690450 NA 10 21 36 51 110 197 311 647500 NA NA 20 34 48 103 186 294 612550 NA NA 19 32 46 98 177 279 581600 NA NA 18 31 44 94 169 266 554650 NA NA 17 30 42 90 162 255 531700 NA NA 16 28 40 86 155 245 510750 NA NA 16 27 39 83 150 236 491800 NA NA 15 26 38 80 144 228 474850 NA NA 15 26 36 78 140 220 459900 NA NA 14 25 35 75 135 214 445950 NA NA 14 24 34 73 132 207 432

1,000 NA NA 13 23 33 71 128 202 4201,100 NA NA 13 22 32 68 122 192 3991,200 NA NA 12 21 30 64 116 183 3811,300 NA NA 12 20 29 62 111 175 3651,400 NA NA 11 20 28 59 107 168 3501,500 NA NA 11 19 27 57 103 162 3381,600 NA NA 10 18 26 55 99 156 3261,700 NA NA 10 18 25 53 96 151 3151,800 NA NA NA 17 24 52 93 147 3061,900 NA NA NA 17 24 50 90 143 2972,000 NA NA NA 16 23 49 88 139 289

NA means a flow of less than 10 cfh.

54-65

Report on Proposals — Copyright, NFPA NFPA 54 Table 12.10 Semi-Rigid Copper Tubing

Gas NaturalInlet pressure Less than 2.0 psi or less

Pressure Drop 17.0 in. WCSpecific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 190 391 796 1,391 1,974 4,216 7,591 11,968 24,926 44,10020 130 269 547 956 1,357 2,898 5,217 8,226 17,132 30,31030 105 216 439 768 1,089 2,327 4,189 6,605 13,757 24,34040 90 185 376 657 932 1,992 3,586 5,653 11,775 20,83250 79 164 333 582 826 1,765 3,178 5,010 10,436 18,46360 72 148 302 528 749 1,599 2,879 4,540 9,455 16,72970 66 137 278 486 689 1,471 2,649 4,177 8,699 15,39080 62 127 258 452 641 1,369 2,464 3,886 8,093 14,31890 58 119 243 424 601 1,284 2,312 3,646 7,593 13,434

100 55 113 229 400 568 1,213 2,184 3,444 7,172 12,689125 48 100 203 355 503 1,075 1,936 3,052 6,357 11,246150 44 90 184 321 456 974 1,754 2,765 5,760 10,190175 40 83 169 296 420 896 1,614 2,544 5,299 9,375200 38 77 157 275 390 834 1,501 2,367 4,930 8,721250 33 69 140 244 346 739 1,330 2,098 4,369 7,730300 30 62 126 221 313 670 1,205 1,901 3,959 7,00410 190 391 796 1,390 1,970 4,220 7,590 12,000 24,90020 130 269 547 956 1,360 2,900 5,220 8,230 17,10030 105 216 439 768 1,090 2,330 4,190 6,610 13,80040 90 185 376 657 932 1,990 3,590 5,650 11,80050 79 164 333 582 826 1,770 3,180 5,010 10,40060 72 148 302 528 749 1,600 2,880 4,540 9,46070 66 137 278 486 689 1,470 2,650 4,180 8,70080 62 127 258 452 641 1,370 2,460 3,890 8,09090 58 119 243 424 601 1,280 2,310 3,650 7,590

100 55 113 229 400 568 1,210 2,180 3,440 7,170125 48 100 203 355 503 1,080 1,940 3,050 6,360150 44 90 184 321 456 974 1,750 2,770 5,760175 40 83 169 296 420 896 1,610 2,540 5,300200 38 77 157 275 390 834 1,500 2,370 4,930250 33 69 140 244 346 739 1,330 2,100 4,370300 30 62 126 221 313 670 1,210 1,900 3,960350 28 57 116 203 288 616 1,110 1,750 3,640400 26 53 108 189 268 573 1,030 1,630 3,390450 24 50 102 177 252 538 968 1,530 3,180500 23 47 96 168 238 508 914 1,440 3,000550 22 45 91 159 226 482 868 1,370 2,850600 21 43 87 152 215 460 829 1,310 2,720650 20 41 83 145 206 441 793 1,250 2,610700 19 39 80 140 198 423 762 1,200 2,500750 18 38 77 135 191 408 734 1,160 2,410800 18 37 74 130 184 394 709 1,120 2,330850 17 35 72 126 178 381 686 1,080 2,250900 17 34 70 122 173 370 665 1,050 2,180950 16 33 68 118 168 359 646 1,020 2,120

1,000 16 32 66 115 163 349 628 991 2,0601,100 15 31 63 109 155 332 597 941 1,9601,200 14 29 60 104 148 316 569 898 1,8701,300 14 28 57 100 142 303 545 860 1,7901,400 13 27 55 96 136 291 524 826 1,7201,500 13 26 53 93 131 280 505 796 1,6601,600 12 25 51 89 127 271 487 768 1,6001,700 12 24 49 86 123 262 472 744 1,5501,800 11 24 48 84 119 254 457 721 1,5001,900 11 23 47 81 115 247 444 700 1,4602,000 11 22 45 79 112 240 432 681 1,420

54-66

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.11 Semi-Rigid Copper Tubing

Gas Natural

Inlet pressure 2.0 psi or less

Pressure Drop 1.0 psi

Specific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 245 506 1,030 1,800 2,554 5,455 9,820 15,483 32,247 57,051

20 169 348 708 1,237 1,755 3,749 6,749 10,641 22,163 39,211

30 135 279 568 993 1,409 3,011 5,420 8,545 17,798 31,48840 116 239 486 850 1,206 2,577 4,639 7,314 15,232 26,94950 103 212 431 754 1,069 2,284 4,111 6,482 13,500 23,88560 93 192 391 683 969 2,069 3,725 5,873 12,232 21,64170 86 177 359 628 891 1,904 3,427 5,403 11,253 19,91080 80 164 334 584 829 1,771 3,188 5,027 10,469 18,52290 75 154 314 548 778 1,662 2,991 4,716 9,823 17,379

100 71 146 296 518 735 1,570 2,826 4,455 9,279 16,416

125 63 129 263 459 651 1,391 2,504 3,948 8,223 14,549150 57 117 238 416 590 1,260 2,269 3,577 7,451 13,183175 52 108 219 383 543 1,160 2,087 3,291 6,855 12,128

200 49 100 204 356 505 1,079 1,942 3,062 6,377 11,283

250 43 89 181 315 448 956 1,721 2,714 5,652 10,000

300 39 80 164 286 406 866 1,559 2,459 5,121 9,060

10 245 506 1,030 1,800 2,550 5,450 9,820 15,500 32,20020 169 348 708 1,240 1,760 3,750 6,750 10,600 22,20030 135 279 568 993 1,410 3,010 5,420 8,550 17,80040 116 239 486 850 1,210 2,580 4,640 7,310 15,20050 103 212 431 754 1,070 2,280 4,110 6,480 13,50060 93 192 391 683 969 2,070 3,730 5,870 12,20070 86 177 359 628 891 1,900 3,430 5,400 11,30080 80 164 334 584 829 1,770 3,190 5,030 10,50090 75 154 314 548 778 1,660 2,990 4,720 9,820

10071 146 296 518 735 1,570 2,830 4,450 9,280

12563 129 263 459 651 1,390 2,500 3,950 8,220

15057 117 238 416 590 1,260 2,270 3,580 7,450

17552 108 219 383 543 1,160 2,090 3,290 6,850

20049 100 204 356 505 1,080 1,940 3,060 6,380

25043 89 181 315 448 956 1,720 2,710 5,650

30039 80 164 286 406 866 1,560 2,460 5,120

350 36 74 150 263 373 797 1,430 2,260 4,710

400 33 69 140 245 347 741 1,330 2,100 4,380

450 31 65 131 230 326 696 1,250 1,970 4,110

500 30 61 124 217 308 657 1,180 1,870 3,880

550 28 58 118 206 292 624 1,120 1,770 3,690

600 27 55 112 196 279 595 1,070 1,690 3,520

650 26 53 108 188 267 570 1,030 1,620 3,370

700 25 51 103 181 256 548 986 1,550 3,240

750 24 49 100 174 247 528 950 1,500 3,120

800 23 47 96 168 239 510 917 1,450 3,010

850 22 46 93 163 231 493 888 1,400 2,920

900 22 44 90 158 224 478 861 1,360 2,830

950 21 43 88 153 217 464 836 1,320 2,740

1,000 20 42 85 149 211 452 813 1,280 2,670

1,100 19 40 81 142 201 429 772 1,220 2,540

1,200 18 38 77 135 192 409 737 1,160 2,420

1,300 18 36 74 129 183 392 705 1,110 2,320

1,400 17 35 71 124 176 376 678 1,070 2,230

1,500 16 34 68 120 170 363 653 1,030 2,140

1,600 16 33 66 116 164 350 630 994 2,070

1,700 15 31 64 112 159 339 610 962 2,000

1,800 15 30 62 108 154 329 592 933 1,940

1,900 14 30 60 105 149 319 575 906 1,890

2,000 14 29 59 102 145 310 559 881 1,830

54-67

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.12 Semi-Rigid Copper Tubing

Gas Natural

Inlet pressure 2.0 psi

Pressure Drop 1.5 psi

Specific Gravity 0.60

SPECIAL USE: Pipe Sizing Between Point of Delivery and the House Line Regulator. Total Load Supplied by a Single House Line Regulator Not Exceeding 150 Cubic Feet per Hour.2

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside1: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 303 625 1,272 2,224 3,155 6,739 12,131 19,127 39,837 70,481

20 208 430 874 1,528 2,168 4,631 8,338 13,146 27,380 48,441

30 167 345 702 1,227 1,741 3,719 6,696 10,557 21,987 38,900

40 143 295 601 1,050 1,490 3,183 5,731 9,035 18,818 33,293

50 127 262 533 931 1,321 2,821 5,079 8,008 16,678 29,507

60 115 237 483 843 1,197 2,556 4,602 7,256 15,112 26,736

70 106 218 444 776 1,101 2,352 4,234 6,675 13,903 24,597

80 98 203 413 722 1,024 2,188 3,939 6,210 12,934 22,882

90 92 191 388 677 961 2,053 3,695 5,826 12,135 21,470

100 87 180 366 640 908 1,939 3,491 5,504 11,463 20,280

125 77 159 324 567 804 1,718 3,094 4,878 10,159 17,974

150 70 145 294 514 729 1,557 2,803 4,420 9,205 16,286

175 64 133 270 473 671 1,432 2,579 4,066 8,469 14,983

200 60 124 252 440 624 1,333 2,399 3,783 7,878 13,938

250 53 110 223 390 553 1,181 2,126 3,352 6,982 12,353

300 48 99 202 353 501 1,070 1,927 3,038 6,327 11,193

10 303 625 1,270 2,220 3,150 6,740 12,100 19,100 39,800

20 208 430 874 1,530 2,170 4,630 8,330 13,100 27,400

30 167 345 702 1,230 1,740 3,720 6,690 10,600 22,000

40 143 295 601 1,050 1,490 3,180 5,730 9,030 18,800

50 127 262 532 931 1,320 2,820 5,080 8,000 16,700

60 115 237 482 843 1,200 2,560 4,600 7,250 15,100

70 106 218 444 776 1,100 2,350 4,230 6,670 13,900

80 98 203 413 722 1,020 2,190 3,940 6,210 12,900

90 92 190 387 677 961 2,050 3,690 5,820 12,100

100 87 180 366 640 907 1,940 3,490 5,500 11,500

125 77 159 324 567 804 1,720 3,090 4,880 10,200

15070 144 294 514 729 1,560 2,800 4,420 9,200

17564 133 270 472 670 1,430 2,580 4,060 8,460

20060 124 252 440 624 1,330 2,400 3,780 7,870

25053 110 223 390 553 1,180 2,130 3,350 6,980

300 48 99 202 353 501 1,070 1,930 3,040 6,320

35044 91 186 325 461 984 1,770 2,790 5,820

40041 85 173 302 429 916 1,650 2,600 5,410

45039 80 162 283 402 859 1,550 2,440 5,080

50036 75 153 268 380 811 1,460 2,300 4,800

55035 72 146 254 361 771 1,390 2,190 4,560

60033 68 139 243 344 735 1,320 2,090 4,350

65032 65 133 232 330 704 1,270 2,000 4,160

70030 63 128 223 317 676 1,220 1,920 4,000

75029 60 123 215 305 652 1,170 1,850 3,850

80028 58 119 208 295 629 1,130 1,790 3,720

85027 57 115 201 285 609 1,100 1,730 3,600

90027 55 111 195 276 590 1,060 1,680 3,490

95026 53 108 189 268 573 1,030 1,630 3,390

1,00025 52 105 184 261 558 1,000 1,580 3,300

1,10024 49 100 175 248 530 954 1,500 3,130

1,20023 47 95 167 237 505 910 1,430 2,990

1,30022 45 91 160 227 484 871 1,370 2,860

1,40021 43 88 153 218 465 837 1,320 2,750

1,50020 42 85 148 210 448 806 1,270 2,650

1,60019 40 82 143 202 432 779 1,230 2,560

1,70019 39 79 138 196 419 753 1,190 2,470

1,80018 38 77 134 190 406 731 1,150 2,400

1,90018 37 74 130 184 394 709 1,120 2,330

2,00017 36 72 126 179 383 690 1,090 2,270

54-68

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.13 Semi-Rigid Copper Tubing

Gas NaturalInlet pressure 5.0 psi or less

Pressure Drop 3.5 psi

Specific Gravity 0.60

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 511 1,054 2,144 3,747 5,315 11,354 20,441 32,229 67,125 118,758

20 351 724 1,473 2,575 3,653 7,804 14,049 22,151 46,135 81,622

30 282 582 1,183 2,068 2,934 6,267 11,282 17,788 37,048 65,545

40 241 498 1,013 1,770 2,511 5,364 9,656 15,224 31,708 56,098

50 214 441 898 1,569 2,225 4,754 8,558 13,493 28,102 49,719

60 194 400 813 1,421 2,016 4,307 7,754 12,225 25,463 45,049

70 178 368 748 1,308 1,855 3,962 7,134 11,247 23,425 41,444

80 166 342 696 1,216 1,726 3,686 6,636 10,463 21,793 38,556

90 156 321 653 1,141 1,619 3,459 6,227 9,817 20,447 36,176

100 147 303 617 1,078 1,529 3,267 5,882 9,273 19,315 34,172

125 130 269 547 955 1,356 2,896 5,213 8,219 17,118 30,286

150 118 243 495 866 1,228 2,624 4,723 7,447 15,510 27,441

175 109 224 456 796 1,130 2,414 4,345 6,851 14,269 25,245

200 101 208 424 741 1,051 2,245 4,042 6,374 13,275 23,486

250 90 185 376 657 932 1,990 3,583 5,649 11,765 20,815

300 81 167 340 595 844 1,803 3,246 5,118 10,660 18,860

10 511 1,050 2,140 3,750 5,320 11,400 20,400 32,200 67,100

20 351 724 1,470 2,580 3,650 7,800 14,000 22,200 46,100

30 282 582 1,180 2,070 2,930 6,270 11,300 17,800 37,000

40 241 498 1,010 1,770 2,510 5,360 9,660 15,200 31,700

50 214 441 898 1,570 2,230 4,750 8,560 13,500 28,100

60 194 400 813 1,420 2,020 4,310 7,750 12,200 25,500

70 178 368 748 1,310 1,860 3,960 7,130 11,200 23,400

80 166 342 696 1,220 1,730 3,690 6,640 10,500 21,800

90 156 321 653 1,140 1,620 3,460 6,230 9,820 20,400

100 147 303 617 1,080 1,530 3,270 5,880 9,270 19,300

125 130 269 547 955 1,360 2,900 5,210 8,220 17,100

150 118 243 495 866 1,230 2,620 4,720 7,450 15,500

175 109 224 456 796 1,130 2,410 4,350 6,850 14,300

200 101 208 424 741 1,050 2,250 4,040 6,370 13,300

250 90 185 376 657 932 1,990 3,580 5,650 11,800

300 81 167 340 595 844 1,800 3,250 5,120 10,700

35075 154 313 547 777 1,660 2,990 4,710 9,810

40069 143 291 509 722 1,540 2,780 4,380 9,120

45065 134 273 478 678 1,450 2,610 4,110 8,560

50062 127 258 451 640 1,370 2,460 3,880 8,090

55058 121 245 429 608 1,300 2,340 3,690 7,680

60056 115 234 409 580 1,240 2,230 3,520 7,330

65053 110 224 392 556 1,190 2,140 3,370 7,020

70051 106 215 376 534 1,140 2,050 3,240 6,740

75049 102 207 362 514 1,100 1,980 3,120 6,490

80048 98 200 350 497 1,060 1,910 3,010 6,270

85046 95 194 339 481 1,030 1,850 2,910 6,070

90045 92 188 328 466 1,000 1,790 2,820 5,880

95043 90 182 319 452 967 1,740 2,740 5,710

1,00042 87 177 310 440 940 1,690 2,670 5,560

1,10040 83 169 295 418 893 1,610 2,530 5,280

1,20038 79 161 281 399 852 1,530 2,420 5,040

1,30037 76 154 269 382 816 1,470 2,320 4,820

1,40035 73 148 259 367 784 1,410 2,220 4,630

1,50034 70 143 249 353 755 1,360 2,140 4,460

1,60033 68 138 241 341 729 1,310 2,070 4,310

1,70032 65 133 233 330 705 1,270 2,000 4,170

1,80031 63 129 226 320 684 1,230 1,940 4,040

1,90030 62 125 219 311 664 1,200 1,890 3,930

2,00029 60 122 213 302 646 1,160 1,830 3,820

54-131 (Log #99) C. A. continued

54-69

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.14 Corrugated Stainless Steel Tubing (CSST)

Gas Natural

Inlet pressure 0.5 psi or lessLess than 2 psi

Pressure Drop 0.5 in. WCSpecific Gravity 0.60

Tube Size (EHD*)Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour5 46 63 115 134 225 270 471 546 895 1,790 4,142

10 32 44 82 95 161 192 330 383 639 1,261 2,93415 25 35 66 77 132 157 267 310 524 1,027 2,39820 22 31 58 67 116 137 231 269 456 888 2,07825 19 27 52 60 104 122 206 240 409 793 1,86030 18 25 47 55 96 112 188 218 374 723 1,69840 15 21 41 47 83 97 162 188 325 625 1,47250 13 19 37 42 75 87 144 168 292 559 1,31760 12 17 34 38 68 80 131 153 267 509 1,20370 11 16 31 36 63 74 121 141 248 471 1,11480 10 15 29 33 60 69 113 132 232 440 1,04290 10 14 28 32 57 65 107 125 219 415 983

100 9 13 26 30 54 62 101 118 208 393 933150 7 10 20 23 42 48 78 91 171 320 762200 6 9 18 21 38 44 71 82 148 277 661250 5 8 16 19 34 39 63 74 133 247 591300 5 7 15 17 32 36 57 67 95 226 540

5 46 63 115 134 225 270 471 546 895 1,790 4,14010 32 44 82 95 161 192 330 383 639 1,260 2,93015 25 35 66 77 132 157 267 310 524 1,030 2,40020 22 31 58 67 116 137 231 269 456 888 2,08025 19 27 52 60 104 122 206 240 409 793 1,86030 18 25 47 55 96 112 188 218 374 723 1,70040 15 21 41 47 83 97 162 188 325 625 1,47050 13 19 37 42 75 87 144 168 292 559 1,32060 12 17 34 38 68 80 131 153 267 509 1,20070 11 16 31 36 63 74 121 141 248 471 1,11080 10 15 29 33 60 69 113 132 232 440 1,04090 10 14 28 32 57 65 107 125 219 415 983

100 9 13 26 30 54 62 101 118 208 393 933150 7 10 20 23 42 48 78 91 171 320 762200 6 9 18 21 38 44 71 82 148 277 661250 5 8 16 19 34 39 63 74 133 247 591300 5 7 15 17 32 36 57 67 95 226 540

Table 12.15 Corrugated Stainless Steel Tubing (CSST)

Gas Natural Inlet pressure 0.5 psi or less Less

than 2 psiPressure Drop 3.0 in. WC

Specific Gravity 0.60Tube Size (EHD*)

Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour5 120 160 277 327 529 649 1,182 1,365 2,141 4,428 10,103

10 83 112 197 231 380 462 828 958 1,528 3,199 7,15615 67 90 161 189 313 379 673 778 1,254 2,541 5,84820 57 78 140 164 273 329 580 672 1,090 2,197 5,06925 51 69 125 147 245 295 518 599 978 1,963 4,53630 46 63 115 134 225 270 471 546 895 1,790 4,14240 39 54 100 116 196 234 407 471 778 1,548 3,59050 35 48 89 104 176 210 363 421 698 1,383 3,21360 32 44 82 95 161 192 330 383 639 1,261 2,93470 29 41 76 88 150 178 306 355 593 1,166 2,71780 27 38 71 82 141 167 285 331 555 1,090 2,54390 26 36 67 77 133 157 268 311 524 1,027 2,398

100 24 34 63 73 126 149 254 295 498 974 2,276150 19 27 52 60 104 122 206 240 409 793 1,860200 17 23 45 52 91 106 178 207 355 686 1,612250 15 21 40 46 82 95 159 184 319 613 1,442300 13 19 37 42 75 87 144 168 234 559 1,317

5 120 160 277 327 529 649 1,180 1,370 2,140 4,430 10,10010 83 112 197 231 380 462 828 958 1,530 3,200 7,16015 67 90 161 189 313 379 673 778 1,250 2,540 5,85020 57 78 140 164 273 329 580 672 1,090 2,200 5,07025 51 69 125 147 245 295 518 599 978 1,960 4,54030 46 63 115 134 225 270 471 546 895 1,790 4,14040 39 54 100 116 196 234 407 471 778 1,550 3,59050 35 48 89 104 176 210 363 421 698 1,380 3,21060 32 44 82 95 161 192 330 383 639 1,260 2,93070 29 41 76 88 150 178 306 355 593 1,170 2,72080 27 38 71 82 141 167 285 331 555 1,090 2,54090 26 36 67 77 133 157 268 311 524 1,030 2,400

100 24 34 63 73 126 149 254 295 498 974 2,280150 19 27 52 60 104 122 206 240 409 793 1,860200 17 23 45 52 91 106 178 207 355 686 1,610250 15 21 40 46 82 95 159 184 319 613 1,440300 13 19 37 42 75 87 144 168 234 559 1,320

54-131 (Log #99) C. A. continued

54-70

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.16 Corrugated Stainless Steel Tubing (CSST)

Gas NaturalInlet pressure 0.5 psi or less Less

than 2 psiPressure Drop 6.0 in. WC

Specific Gravity 0.60Tube Size (EHD*)

Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour5 173 229 389 461 737 911 1,687 1,946 3,000 6,282 14,263

10 120 160 277 327 529 649 1,182 1,365 2,141 4,428 10,10315 96 130 227 267 436 532 960 1,110 1,758 3,607 8,25720 83 112 197 231 380 462 828 958 1,528 3,119 7,15625 74 99 176 207 342 414 739 855 1,371 2,786 6,40430 67 90 161 189 313 379 673 778 1,254 2,541 5,84840 57 78 140 164 273 329 580 672 1,090 2,197 5,06950 51 69 125 147 245 295 518 599 978 1,963 4,53660 46 63 115 134 225 270 471 546 895 1,790 4,14270 42 58 106 124 209 250 435 505 830 1,656 3,83780 39 54 100 116 196 234 407 471 778 1,548 3,59090 37 51 94 109 185 221 383 444 735 1,458 3,386

100 35 48 89 104 176 210 363 421 698 1,383 3,213150 28 39 73 85 145 172 294 342 573 1,126 2,626200 24 34 63 73 126 149 254 295 498 974 2,276250 21 30 57 66 114 134 226 263 447 870 2,036300 19 27 52 60 104 122 206 240 409 793 1,860

5 173 229 389 461 737 911 1,690 1,950 3,000 6,280 14,26010 120 160 277 327 529 649 1,180 1,370 2,140 4,430 10,10015 96 130 227 267 436 532 960 1,110 1,760 3,610 8,26020 83 112 197 231 380 462 828 958 1,530 3,120 7,16025 74 99 176 207 342 414 739 855 1,370 2,790 6,40030 67 90 161 189 313 379 673 778 1,250 2,540 5,85040 57 78 140 164 273 329 580 672 1,090 2,200 5,07050 51 69 125 147 245 295 518 599 978 1,960 4,54060 46 63 115 134 225 270 471 546 895 1,790 4,14070 42 58 106 124 209 250 435 505 830 1,660 3,84080 39 54 100 116 196 234 407 471 778 1,550 3,59090 37 51 94 109 185 221 383 444 735 1,460 3,390

100 35 48 89 104 176 210 363 421 698 1,380 3,210150 28 39 73 85 145 172 294 342 573 1,130 2,630200 24 34 63 73 126 149 254 295 498 974 2,280250 21 30 57 66 114 134 226 263 447 870 2,040300 19 27 52 60 104 122 206 240 409 793 1,860

Table 12.17 Corrugated Stainless Steel Tubing (CSST)Gas Natural

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 0.60Tube Size (EHD*)

Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 270 353 587 700 1,098 1,372 2,592 2,986 4,509 9,599 21,63725 166 220 374 444 709 876 1,620 1,869 2,887 6,041 13,71530 151 200 342 405 650 801 1,475 1,703 2,642 5,509 12,52640 129 172 297 351 567 696 1,273 1,470 2,297 4,763 10,85550 115 154 266 314 510 624 1,135 1,311 2,061 4,255 9,71575 93 124 218 257 420 512 922 1,066 1,692 3,467 7,94080 89 120 211 249 407 496 892 1,031 1,639 3,355 7,689

100 79 107 189 222 366 445 795 920 1,471 2,997 6,881150 64 87 155 182 302 364 646 748 1,207 2,442 5,624200 55 75 135 157 263 317 557 645 1,049 2,111 4,874250 49 67 121 141 236 284 497 576 941 1,886 4,362300 44 61 110 129 217 260 453 525 862 1,720 3,983400 38 52 96 111 189 225 390 453 749 1,487 3,452500 34 46 86 100 170 202 348 404 552 1,329 3,08910 270 353 587 700 1,100 1,370 2,590 2,990 4,510 9,600 21,60025 166 220 374 444 709 876 1,620 1,870 2,890 6,040 13,70030 151 200 342 405 650 801 1,480 1,700 2,640 5,510 12,50040 129 172 297 351 567 696 1,270 1,470 2,300 4,760 10,90050 115 154 266 314 510 624 1,140 1,310 2,060 4,260 9,72075 93 124 218 257 420 512 922 1,070 1,690 3,470 7,94080 89 120 211 249 407 496 892 1,030 1,640 3,360 7,690

100 79 107 189 222 366 445 795 920 1,470 3,000 6,880150 64 87 155 182 302 364 646 748 1,210 2,440 5,620200 55 75 135 157 263 317 557 645 1,050 2,110 4,870250 49 67 121 141 236 284 497 576 941 1,890 4,360300 44 61 110 129 217 260 453 525 862 1,720 3,980400 38 52 96 111 189 225 390 453 749 1,490 3,450500 34 46 86 100 170 202 348 404 552 1,330 3,090

54-131 (Log #99) C. A. continued

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Table 12.18 Corrugated Stainless Steel Tubing (CSST)Gas Natural

Inlet pressure 5.0 psiPressure Drop 3.5 psi

Specific Gravity 0.60

Tube Size (EHD*)Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 523 674 1,084 1,304 1,995 2,530 4,923 5,659 8,295 18,080 40,35325 322 420 691 827 1,289 1,616 3,077 3,543 5,311 11,378 25,58030 292 382 632 755 1,181 1,478 2,803 3,228 4,860 10,377 23,36140 251 329 549 654 1,031 1,284 2,418 2,786 4,225 8,972 20,24650 223 293 492 586 926 1,151 2,157 2,486 3,791 8,015 18,11975 180 238 403 479 763 944 1,752 2,021 3,112 6,530 14,80980 174 230 391 463 740 915 1,694 1,955 3,016 6,320 14,341

100 154 205 350 415 665 820 1,511 1,744 2,705 5,646 12,834150 124 166 287 339 548 672 1,228 1,418 2,221 4,600 10,489200 107 143 249 294 478 584 1,060 1,224 1,931 3,977 9,090250 95 128 223 263 430 524 945 1,092 1,732 3,553 8,135300 86 116 204 240 394 479 860 995 1,585 3,240 7,430400 74 100 177 208 343 416 742 858 1,378 2,802 6,439500 66 89 159 186 309 373 662 766 1,035 2,503 5,76210 523 674 1,080 1,300 2,000 2,530 4,920 5,660 8,300 18,100 40,40025 322 420 691 827 1,290 1,620 3,080 3,540 5,310 11,400 25,60030 292 382 632 755 1,180 1,480 2,800 3,230 4,860 10,400 23,40040 251 329 549 654 1,030 1,280 2,420 2,790 4,230 8,970 20,20050 223 293 492 586 926 1,150 2,160 2,490 3,790 8,020 18,10075 180 238 403 479 763 944 1,750 2,020 3,110 6,530 14,80080 174 230 391 463 740 915 1,690 1,960 3,020 6,320 14,300

100 154 205 350 415 665 820 1,510 1,740 2,710 5,650 12,800150 124 166 287 339 548 672 1,230 1,420 2,220 4,600 10,500200 107 143 249 294 478 584 1,060 1,220 1,930 3,980 9,090250 95 128 223 263 430 524 945 1,090 1,730 3,550 8,140300 86 116 204 240 394 479 860 995 1,590 3,240 7,430400 74 100 177 208 343 416 742 858 1,380 2,800 6,440500 66 89 159 186 309 373 662 766 1,040 2,500 5,760

54-131 (Log #99) C. A. continued

54-72

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Table 12.19 Polyethylene Plastic Pipe

Gas NaturalInlet pressure 1.0 psi or Less

Less than 2 psiPressure Drop 0.3 in. WC

Specific Gravity 0.60

Pipe Size (in.)

Nominal OD: 1/23/4 1 11/4 11/2 2

Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 153 305 551 955 1,442 2,59020 105 210 379 656 991 1,78030 84 169 304 527 796 1,43040 72 144 260 451 681 1,22450 64 128 231 400 604 1,08460 58 116 209 362 547 98370 53 107 192 333 503 90480 50 99 179 310 468 84190 46 93 168 291 439 789

100 44 88 159 275 415 745125 39 78 141 243 368 661150 35 71 127 221 333 598175 32 65 117 203 306 551200 30 60 109 189 285 51210 153 305 551 955 1,440 2,590

20 105 210 379 656 991 1,780

30 84 169 304 527 796 1,430

40 72 144 260 451 681 1,220

50 64 128 231 400 604 1,080

60 58 116 209 362 547 983

70 53 107 192 333 503 904

80 50 99 179 310 468 841

90 46 93 168 291 439 789

100 44 88 159 275 415 745

125 39 78 141 243 368 661

150 35 71 127 221 333 598

175 32 65 117 203 306 551

200 30 60 109 189 285 512

250 27 54 97 167 253 454

300 24 48 88 152 229 411

350 22 45 81 139 211 378

400 21 42 75 130 196 352

450 19 39 70 122 184 330

500 18 37 66 115 174 312

54-131 (Log #99) C. A. continued

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Table 12.20 Polyethylene Plastic Pipe

Gas NaturalInlet pressure 1.0 psi or Less

Less than 2 psiPressure Drop 0.5 in. WC

Specific Gravity 0.60

Pipe Size (in.)Nominal OD: 1/2

3/4 1 11/4 11/2 2Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 201 403 726 1,258 1,900 3,41520 138 277 499 865 1,306 2,34730 111 222 401 695 1,049 1,88540 95 190 343 594 898 1,61350 84 169 304 527 796 1,43060 76 153 276 477 721 1,29570 70 140 254 439 663 1,19280 65 131 236 409 617 1,10990 61 123 221 383 579 1,040

100 58 116 209 362 547 983125 51 103 185 321 485 871150 46 93 168 291 439 789175 43 86 154 268 404 726200 40 80 144 249 376 67510 201 403 726 1,260 1,900 3,41020 138 277 499 865 1,310 2,35030 111 222 401 695 1,050 1,88040 95 190 343 594 898 1,61050 84 169 304 527 796 1,43060 76 153 276 477 721 1,30070 70 140 254 439 663 1,19080 65 131 236 409 617 1,11090 61 123 221 383 579 1,040

100 58 116 209 362 547 983125 51 103 185 321 485 871150 46 93 168 291 439 789175 43 86 154 268 404 726200 40 80 144 249 376 675250 35 71 127 221 333 598300 32 64 115 200 302 542350 29 59 106 184 278 499400 27 55 99 171 258 464450 26 51 93 160 242 435500 24 48 88 152 229 411

54-131 (Log #99) C. A. continued

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Table 12.21 Polyethylene Plastic PipeGas Natural

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 0.60

Pipe Size (in.)Nominal OD: 1/2

3/4 1 11/4 11/2 2Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 1,858 3,721 6,714 11,631 17,565 31,56020 1,277 2,557 4,614 7,994 12,072 21,69130 1,026 2,054 3,706 6,420 9,695 17,41940 878 1,758 3,172 5,494 8,297 14,90850 778 1,558 2,811 4,869 7,354 13,21360 705 1,412 2,547 4,412 6,663 11,97270 649 1,299 2,343 4,059 6,130 11,01480 603 1,208 2,180 3,776 5,703 10,24690 566 1,134 2,045 3,543 5,351 9,614

100 535 1,071 1,932 3,347 5,054 9,081125 474 949 1,712 2,966 4,479 8,048150 429 860 1,551 2,688 4,059 7,292175 395 791 1,427 2,473 3,734 6,709200 368 736 1,328 2,300 3,474 6,24110 1,860 3,720 6,710 11,600 17,600 31,60020 1,280 2,560 4,610 7,990 12,100 21,70030 1,030 2,050 3,710 6,420 9,690 17,40040 878 1,760 3,170 5,490 8,300 14,90050 778 1,560 2,810 4,870 7,350 13,20060 705 1,410 2,550 4,410 6,660 12,00070 649 1,300 2,340 4,060 6,130 11,00080 603 1,210 2,180 3,780 5,700 10,20090 566 1,130 2,050 3,540 5,350 9,610

100 535 1,070 1,930 3,350 5,050 9,080125 474 949 1,710 2,970 4,480 8,050150 429 860 1,550 2,690 4,060 7,290175 395 791 1,430 2,470 3,730 6,710200 368 736 1,330 2,300 3,470 6,240250 326 652 1,180 2,040 3,080 5,530300 295 591 1,070 1,850 2,790 5,010350 272 544 981 1,700 2,570 4,610400 253 506 913 1,580 2,390 4,290450 237 475 856 1,480 2,240 4,020500 224 448 809 1,400 2,120 3,800550 213 426 768 1,330 2,010 3,610600 203 406 733 1,270 1,920 3,440650 194 389 702 1,220 1,840 3,300700 187 374 674 1,170 1,760 3,170750 180 360 649 1,130 1,700 3,050800 174 348 627 1,090 1,640 2,950850 168 336 607 1,050 1,590 2,850900 163 326 588 1,020 1,540 2,770950 158 317 572 990 1,500 2,690

1,000 154 308 556 963 1,450 2,6101,100 146 293 528 915 1,380 2,4801,200 139 279 504 873 1,320 2,3701,300 134 267 482 836 1,260 2,2701,400 128 257 463 803 1,210 2,1801,500 124 247 446 773 1,170 2,1001,600 119 239 431 747 1,130 2,0301,700 115 231 417 723 1,090 1,9601,800 112 224 404 701 1,060 1,9001,900 109 218 393 680 1,030 1,8502,000 106 212 382 662 1,000 1,800

54-131 (Log #99) C. A. continued

54-75

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.22 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 10.0 psiPressure Drop 1.0 psi

Specific Gravity 1.50

SPECIAL USE: Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator)

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 3 31/2 4

Actual: 0.622 0.824 1.049 1.38 1.61 2.067 3.068 3.548 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour30 1,834 3,835 7,225 14,834 22,225 42,804 120,604 176,583 245,99540 1,570 3,283 6,184 12,696 19,022 36,634 103,222 151,132 210,53950 1,391 2,909 5,480 11,252 16,859 32,468 91,484 133,946 186,59760 1,261 2,636 4,966 10,195 15,275 29,419 82,891 121,364 169,07170 1,160 2,425 4,568 9,379 14,053 27,065 76,258 111,654 155,54380 1,079 2,256 4,250 8,726 13,074 25,179 70,944 103,872 144,70390 1,012 2,117 3,988 8,187 12,267 23,624 66,564 97,460 135,770

100 956 2,000 3,767 7,733 11,587 22,315 62,876 92,060 128,247150 768 1,606 3,025 6,210 9,305 17,920 50,492 73,927 102,987200 657 1,374 2,589 5,315 7,964 15,337 43,214 63,272 88,144250 582 1,218 2,294 4,711 7,058 13,593 38,300 56,077 78,120300 528 1,104 2,079 4,268 6,395 12,316 34,703 50,810 70,782350 486 1,015 1,913 3,927 5,883 11,331 31,926 46,744 65,119400 452 945 1,779 3,653 5,473 10,541 29,701 43,487 60,581450 424 886 1,669 3,428 5,135 9,890 27,867 40,802 56,841500 400 837 1,577 3,238 4,851 9,342 26,323 38,541 53,691600 363 759 1,429 2,934 4,395 8,465 23,851 34,921 48,648700 334 698 1,314 2,699 4,044 7,788 21,943 32,127 44,756800 310 649 1,223 2,511 3,762 7,245 20,413 29,888 41,637900 291 609 1,147 2,356 3,530 6,798 19,153 28,043 39,066

1,000 275 575 1,084 2,225 3,334 6,421 18,092 26,489 36,9021,500 221 462 870 1,787 2,677 5,156 14,528 21,272 29,6332,000 189 395 745 1,529 2,291 4,413 12,435 18,206 25,362

54-131 (Log #99) C. A. continued

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Table 12.22 continued

Nominal Inside: 1/23/4 1 11/4 11/2 2 2 1/2 3 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Capacity in Thousands of Btu per Hour10 3,320 6,950 13,100 26,900 40,300 77,600 124,000 219,000 446,000

20 2,280 4,780 9,000 18,500 27,700 53,300 85,000 150,000 306,000

30 1,830 3,840 7,220 14,800 22,200 42,800 68,200 121,000 246,000

40 1,570 3,280 6,180 12,700 19,000 36,600 58,400 103,000 211,000

50 1,390 2,910 5,480 11,300 16,900 32,500 51,700 91,500 187,000

60 1,260 2,640 4,970 10,200 15,300 29,400 46,900 82,900 169,000

70 1,160 2,430 4,570 9,380 14,100 27,100 43,100 76,300 156,000

80 1,080 2,260 4,250 8,730 13,100 25,200 40,100 70,900 145,000

90 1,010 2,120 3,990 8,190 12,300 23,600 37,700 66,600 136,000

100 956 2,000 3,770 7,730 11,600 22,300 35,600 62,900 128,000

125 848 1,770 3,340 6,850 10,300 19,800 31,500 55,700 114,000

150 768 1,610 3,020 6,210 9,300 17,900 28,600 50,500 103,000

175 706 1,480 2,780 5,710 8,560 16,500 26,300 46,500 94,700

200 657 1,370 2,590 5,320 7,960 15,300 24,400 43,200 88,100

250 582 1,220 2,290 4,710 7,060 13,600 21,700 38,300 78,100

300 528 1,100 2,080 4,270 6,400 12,300 19,600 34,700 70,800

350 486 1,020 1,910 3,930 5,880 11,300 18,100 31,900 65,100

400 452 945 1,780 3,650 5,470 10,500 16,800 29,700 60,600

450 424 886 1,670 3,430 5,140 9,890 15,800 27,900 56,800

500 400 837 1,580 3,240 4,850 9,340 14,900 26,300 53,700

550 380 795 1,500 3,070 4,610 8,870 14,100 25,000 51,000

600 363 759 1,430 2,930 4,400 8,460 13,500 23,900 48,600

650 347 726 1,370 2,810 4,210 8,110 12,900 22,800 46,600

700 334 698 1,310 2,700 4,040 7,790 12,400 21,900 44,800

750 321 672 1,270 2,600 3,900 7,500 12,000 21,100 43,100

800 310 649 1,220 2,510 3,760 7,240 11,500 20,400 41,600

850 300 628 1,180 2,430 3,640 7,010 11,200 19,800 40,300

900 291 609 1,150 2,360 3,530 6,800 10,800 19,200 39,100

950 283 592 1,110 2,290 3,430 6,600 10,500 18,600 37,900

1,000 275 575 1,080 2,230 3,330 6,420 10,200 18,100 36,900

1,100 261 546 1,030 2,110 3,170 6,100 9,720 17,200 35,000

1,200 249 521 982 2,020 3,020 5,820 9,270 16,400 33,400

1,300 239 499 940 1,930 2,890 5,570 8,880 15,700 32,000

1,400 229 480 903 1,850 2,780 5,350 8,530 15,100 30,800

1,500 221 462 870 1,790 2,680 5,160 8,220 14,500 29,600

1,600 213 446 840 1,730 2,590 4,980 7,940 14,000 28,600

1,700 206 432 813 1,670 2,500 4,820 7,680 13,600 27,700

1,800 200 419 789 1,620 2,430 4,670 7,450 13,200 26,900

1,900 194 407 766 1,570 2,360 4,540 7,230 12,800 26,100

2,000 189 395 745 1,530 2,290 4,410 7,030 12,400 25,400

54-131 (Log #99) C. A. continued

54-77

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Table 12.23 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 1.50

Pipe Size (in.)

Nominal 1/23/4 1 11/4 11/2 2 21/2 3 4

Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 2,676 5,595 10,539 21,638 32,420 62,438 99,516 175,927 358,835

20 1,839 3,845 7,243 14,872 22,282 42,913 68,397 120,914 246,625

30 1,477 3,088 5,817 11,942 17,893 34,461 54,925 97,098 198,049

40 1,264 2,643 4,978 10,221 15,314 29,494 47,009 83,103 169,504

50 1,120 2,342 4,412 9,059 13,573 26,140 41,663 73,653 150,229

60 1,015 2,122 3,998 8,208 12,298 23,685 37,750 66,735 136,118

70 934 1,952 3,678 7,551 11,314 21,790 34,729 61,395 125,227

80 869 1,816 3,422 7,025 10,526 20,271 32,309 57,116 116,499

90 815 1,704 3,210 6,591 9,876 19,020 30,314 53,590 109,307

100 770 1,610 3,033 6,226 9,329 17,966 28,635 50,621 103,251

125 682 1,427 2,688 5,518 8,268 15,923 25,378 44,865 91,510

150 618 1,293 2,435 5,000 7,491 14,427 22,995 40,651 82,914

175 569 1,189 2,240 4,600 6,892 13,273 21,155 37,398 76,280

200 529 1,106 2,084 4,279 6,411 12,348 19,681 34,792 70,964

10 2,680 5,590 10,500 21,600 32,400 62,400 99,500 176,000 359,000

20 1,840 3,850 7,240 14,900 22,300 42,900 68,400 121,000 247,000

30 1,480 3,090 5,820 11,900 17,900 34,500 54,900 97,100 198,00040 1,260 2,640 4,980 10,200 15,300 29,500 47,000 83,100 170,00050 1,120 2,340 4,410 9,060 13,600 26,100 41,700 73,700 150,00060 1,010 2,120 4,000 8,210 12,300 23,700 37,700 66,700 136,00070 934 1,950 3,680 7,550 11,300 21,800 34,700 61,400 125,000

80 869 1,820 3,420 7,020 10,500 20,300 32,300 57,100 116,000

90 815 1,700 3,210 6,590 9,880 19,000 30,300 53,600 109,000

100 770 1,610 3,030 6,230 9,330 18,000 28,600 50,600 103,000

125 682 1,430 2,690 5,520 8,270 15,900 25,400 44,900 91,500

150 618 1,290 2,440 5,000 7,490 14,400 23,000 40,700 82,900

175 569 1,190 2,240 4,600 6,890 13,300 21,200 37,400 76,300

200 529 1,110 2,080 4,280 6,410 12,300 19,700 34,800 71,000

250469 981 1,850 3,790 5,680 10,900 17,400 30,800 62,900

300425 889 1,670 3,440 5,150 9,920 15,800 27,900 57,000

350391 817 1,540 3,160 4,740 9,120 14,500 25,700 52,400

400364 760 1,430 2,940 4,410 8,490 13,500 23,900 48,800

450341 714 1,340 2,760 4,130 7,960 12,700 22,400 45,800

500322 674 1,270 2,610 3,910 7,520 12,000 21,200 43,200

550306 640 1,210 2,480 3,710 7,140 11,400 20,100 41,100

600292 611 1,150 2,360 3,540 6,820 10,900 19,200 39,200

650280 585 1,100 2,260 3,390 6,530 10,400 18,400 37,500

700269 562 1,060 2,170 3,260 6,270 9,990 17,700 36,000

750259 541 1,020 2,090 3,140 6,040 9,630 17,000 34,700

800250 523 985 2,020 3,030 5,830 9,300 16,400 33,500

850242 506 953 1,960 2,930 5,640 9,000 15,900 32,400

900235 490 924 1,900 2,840 5,470 8,720 15,400 31,500

950228 476 897 1,840 2,760 5,310 8,470 15,000 30,500

1,000222 463 873 1,790 2,680 5,170 8,240 14,600 29,700

1,100210 440 829 1,700 2,550 4,910 7,830 13,800 28,200

1,200201 420 791 1,620 2,430 4,680 7,470 13,200 26,900

1,300192 402 757 1,550 2,330 4,490 7,150 12,600 25,800

1,400185 386 727 1,490 2,240 4,310 6,870 12,100 24,800

1,500178 372 701 1,440 2,160 4,150 6,620 11,700 23,900

1,600172 359 677 1,390 2,080 4,010 6,390 11,300 23,000

1,700166 348 655 1,340 2,010 3,880 6,180 10,900 22,300

1,800161 337 635 1,300 1,950 3,760 6,000 10,600 21,600

1,900157 327 617 1,270 1,900 3,650 5,820 10,300 21,000

2,000152 318 600 1,230 1,840 3,550 5,660 10,000 20,400

54-78

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Table 12.24 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 11.0 in. WCPressure Drop 0.5 in. WC

Specific Gravity 1.50

SPECIAL USE: Pipe Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance.

Pipe Size (in.)

Nominal Inside: 1/23/4 1 11/4 11/2 2 3 31/2 4

Actual: 0.622 0.824 1.049 1.38 1.61 2.067 3.068 3.548 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 291 608 1,145 2,352 3,523 6,786 19,119 27,993 38,997

20 200 418 787 1,616 2,422 4,664 13,141 19,240 26,802

30 160 336 632 1,298 1,945 3,745 10,552 15,450 21,523

40 137 287 541 1,111 1,664 3,205 9,031 13,223 18,421

50 122 255 480 984 1,475 2,841 8,004 11,720 16,326

60 110 231 434 892 1,337 2,574 7,253 10,619 14,793

80 94 197 372 763 1,144 2,203 6,207 9,088 12,661

100 84 175 330 677 1,014 1,952 5,501 8,055 11,221

125 74 155 292 600 899 1,730 4,876 7,139 9,945

150 67 140 265 543 814 1,568 4,418 6,468 9,011

200 58 120 227 465 697 1,342 3,781 5,536 7,712

250 51 107 201 412 618 1,189 3,351 4,906 6,835

300 46 97 182 373 560 1,078 3,036 4,446 6,193

350 42 89 167 344 515 991 2,793 4,090 5,698

400 40 83 156 320 479 922 2,599 3,805 5,301

Nominal Inside: 1/23/4 1 11/4 11/2 2 21/2 3 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Capacity in Thousands of Btu per Hour

10 291 608 1,150 2,350 3,520 6,790 10,800 19,100 39,000

20 200 418 787 1,620 2,420 4,660 7,430 13,100 26,800

30 160 336 632 1,300 1,940 3,750 5,970 10,600 21,500

40 137 287 541 1,110 1,660 3,210 5,110 9,030 18,400

50 122 255 480 985 1,480 2,840 4,530 8,000 16,300

60 110 231 434 892 1,340 2,570 4,100 7,250 14,800

80 101 212 400 821 1,230 2,370 3,770 6,670 13,600

100 94 197 372 763 1,140 2,200 3,510 6,210 12,700

125 89 185 349 716 1,070 2,070 3,290 5,820 11,900

150 84 175 330 677 1,010 1,950 3,110 5,500 11,200

175 74 155 292 600 899 1,730 2,760 4,880 9,950

200 67 140 265 543 814 1,570 2,500 4,420 9,010

25062 129 243 500 749 1,440 2,300 4,060 8,290

30058 120 227 465 697 1,340 2,140 3,780 7,710

35051 107 201 412 618 1,190 1,900 3,350 6,840

40046 97 182 373 560 1,080 1,720 3,040 6,190

45042 89 167 344 515 991 1,580 2,790 5,700

50040 83 156 320 479 922 1,470 2,600 5,300

55037 78 146 300 449 865 1,380 2,440 4,970

60035 73 138 283 424 817 1,300 2,300 4,700

65033 70 131 269 403 776 1,240 2,190 4,460

70032 66 125 257 385 741 1,180 2,090 4,260

75030 64 120 246 368 709 1,130 2,000 4,080

80029 61 115 236 354 681 1,090 1,920 3,920

85028 59 111 227 341 656 1,050 1,850 3,770

90027 57 107 220 329 634 1,010 1,790 3,640

95026 55 104 213 319 613 978 1,730 3,530

1,00025 53 100 206 309 595 948 1,680 3,420

1,10025 52 97 200 300 578 921 1,630 3,320

1,20024 50 95 195 292 562 895 1,580 3,230

1,30023 48 90 185 277 534 850 1,500 3,070

1,40022 46 86 176 264 509 811 1,430 2,930

1,50021 44 82 169 253 487 777 1,370 2,800

1,60020 42 79 162 243 468 746 1,320 2,690

1,70019 40 76 156 234 451 719 1,270 2,590

1,80019 39 74 151 226 436 694 1,230 2,500

1,90018 38 71 146 219 422 672 1,190 2,420

2,00018 37 69 142 212 409 652 1,150 2,350

54-79

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.25 Semi-Rigid Copper Tubing

Gas Undiluted Propane

Inlet pressure 10.0 psi

Pressure Drop 1.0 psi

Specific Gravity 1.50

SPECIAL USE: Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator)

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 513 1,058 2,152 3,760 5,335 11,396 20,516 32,347 67,371 119,19320 352 727 1,479 2,585 3,667 7,832 14,101 22,232 46,303 81,92130 283 584 1,188 2,075 2,944 6,290 11,323 17,853 37,183 65,78540 242 500 1,016 1,776 2,520 5,383 9,691 15,280 31,824 56,30450 215 443 901 1,574 2,234 4,771 8,589 13,542 28,205 49,901

60 194 401 816 1,426 2,024 4,323 7,782 12,270 25,556 45,214

70 179 369 751 1,312 1,862 3,977 7,160 11,288 23,511 41,59680 166 343 699 1,221 1,732 3,700 6,661 10,502 21,873 38,69790 156 322 655 1,145 1,625 3,471 6,250 9,853 20,522 36,308

100 147 304 619 1,082 1,535 3,279 5,903 9,307 19,385 34,297125 131 270 549 959 1,361 2,906 5,232 8,249 17,181 30,396150 118 244 497 869 1,233 2,633 4,741 7,474 15,567 27,541175 109 225 457 799 1,134 2,423 4,361 6,876 14,321 25,338200 101 209 426 744 1,055 2,254 4,057 6,397 13,323 23,572225 95 196 399 698 990 2,115 3,807 6,002 12,501 22,117250 90 185 377 659 935 1,997 3,596 5,669 11,808 20,891275 85 176 358 626 888 1,897 3,415 5,385 11,215 19,841300 81 168 342 597 847 1,810 3,258 5,137 10,699 18,92910 513 1,060 2,150 3,760 5,330 11,400 20,500 32,300 67,400

20 352 727 1,480 2,580 3,670 7,830 14,100 22,200 46,300

30 283 584 1,190 2,080 2,940 6,290 11,300 17,900 37,200

40 242 500 1,020 1,780 2,520 5,380 9,690 15,300 31,800

50 215 443 901 1,570 2,230 4,770 8,590 13,500 28,200

60 194 401 816 1,430 2,020 4,320 7,780 12,300 25,600

70 179 369 751 1,310 1,860 3,980 7,160 11,300 23,500

80 166 343 699 1,220 1,730 3,700 6,660 10,500 21,900

90 156 322 655 1,150 1,630 3,470 6,250 9,850 20,500

100 147 304 619 1,080 1,540 3,280 5,900 9,310 19,400

125 131 270 549 959 1,360 2,910 5,230 8,250 17,200

150 118 244 497 869 1,230 2,630 4,740 7,470 15,600

175 109 225 457 799 1,130 2,420 4,360 6,880 14,300

200 101 209 426 744 1,060 2,250 4,060 6,400 13,300

250 90 185 377 659 935 2,000 3,600 5,670 11,800

300 81 168 342 597 847 1,810 3,260 5,140 10,700

350 75 155 314 549 779 1,660 3,000 4,730 9,840

40070 144 292 511 725 1,550 2,790 4,400 9,160

45065 135 274 480 680 1,450 2,620 4,130 8,590

50062 127 259 453 643 1,370 2,470 3,900 8,120

55059 121 246 430 610 1,300 2,350 3,700 7,710

60056 115 235 410 582 1,240 2,240 3,530 7,350

65054 111 225 393 558 1,190 2,140 3,380 7,040

70051 106 216 378 536 1,140 2,060 3,250 6,770

75050 102 208 364 516 1,100 1,980 3,130 6,520

80048 99 201 351 498 1,060 1,920 3,020 6,290

85046 96 195 340 482 1,030 1,850 2,920 6,090

90045 93 189 330 468 1,000 1,800 2,840 5,910

95044 90 183 320 454 970 1,750 2,750 5,730

1,00042 88 178 311 442 944 1,700 2,680 5,580

1,10040 83 169 296 420 896 1,610 2,540 5,300

1,20038 79 161 282 400 855 1,540 2,430 5,050

1,30037 76 155 270 383 819 1,470 2,320 4,840

1,40035 73 148 260 368 787 1,420 2,230 4,650

1,50034 70 143 250 355 758 1,360 2,150 4,480

1,60033 68 138 241 343 732 1,320 2,080 4,330

1,70032 66 134 234 331 708 1,270 2,010 4,190

1,80031 64 130 227 321 687 1,240 1,950 4,060

1,90030 62 126 220 312 667 1,200 1,890 3,940

2,00029 60 122 214 304 648 1,170 1,840 3,830

54-80

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.26 Semi-Rigid Copper TubingInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCSpecific Gravity 1.50

SPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and ApplianceTube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 45 93 188 329 467 997 1,795 2,830 5,895 10,42920 31 64 129 226 321 685 1,234 1,945 4,051 7,16830 25 51 104 182 258 550 991 1,562 3,253 5,75640 21 44 89 155 220 471 848 1,337 2,784 4,92650 19 39 79 138 195 417 752 1,185 2,468 4,36660 17 35 71 125 177 378 681 1,074 2,236 3,95670 16 32 66 115 163 348 626 988 2,057 3,63980 15 30 61 107 152 324 583 919 1,914 3,38690 14 28 57 100 142 304 547 862 1,796 3,177

100 13 27 54 95 134 287 517 814 1,696 3,001125 11 24 48 84 119 254 458 722 1,503 2,660150 10 21 44 76 108 230 415 654 1,362 2,410175 10 20 40 70 99 212 382 602 1,253 2,217200 8.9 18 37 65 92 197 355 560 1,166 2,062225 8.3 17 35 61 87 185 333 525 1,094 1,935250 7.9 16 33 58 82 175 315 496 1,033 1,828275 7.5 15 31 55 78 166 299 471 981 1,736300 7.1 15 30 52 74 158 285 449 936 1,65610 45 93 188 329 467 997 1,800 2,830 5,890

20 31 64 129 226 321 685 1,230 1,950 4,050

30 25 51 104 182 258 550 991 1,560 3,250

40 21 44 89 155 220 471 848 1,340 2,780

50 19 39 79 138 195 417 752 1,180 2,470

60 17 35 71 125 177 378 681 1,070 2,240

70 16 32 66 115 163 348 626 988 2,060

80 15 30 61 107 152 324 583 919 1,910

90 14 28 57 100 142 304 547 862 1,800

100 13 27 54 95 134 287 517 814 1,700

125 11 24 48 84 119 254 458 722 1,500

150 10 21 44 76 108 230 415 654 1,360

175 NA 20 40 70 99 212 382 602 1,250

200 NA 18 37 65 92 197 355 560 1,170

250 NA 16 33 58 82 175 315 496 1,030

300 NA 15 30 52 74 158 285 449 936

350 NA 14 28 48 68 146 262 414 861

54-131 (Log #99) C. A. continued

54-81

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.26 continuedSPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour

400 NA 13 26 45 63 136 244 385 801

450 NA 12 24 42 60 127 229 361 752

500 NA 11 23 40 56 120 216 341 710

550 NA 11 22 38 53 114 205 324 674

600 NA 10 21 36 51 109 196 309 643

650 NA NA 20 34 49 104 188 296 616

700 NA NA 19 33 47 100 180 284 592

750 NA NA 18 32 45 96 174 274 570

800 NA NA 18 31 44 93 168 264 551

850 NA NA 17 30 42 90 162 256 533

900 NA NA 17 29 41 87 157 248 517

950 NA NA 16 28 40 85 153 241 502

1,000 NA NA 16 27 39 83 149 234 488

1,100 NA NA 15 26 37 78 141 223 464

1,200 NA NA 14 25 35 75 135 212 442

1,300 NA NA 14 24 34 72 129 203 423

1,400 NA NA 13 23 32 69 124 195 407

1,500 NA NA 13 22 31 66 119 188 392

1,600 NA NA 12 21 30 64 115 182 378

1,700 NA NA 12 20 29 62 112 176 366

1,800 NA NA 11 20 28 60 108 170 355

1,900 NA NA 11 19 27 58 105 166 345

2,000 NA NA 11 19 27 57 102 161 335Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. NA means a flow of less than 10,000 But/hr

54-131 (Log #99) C. A. continued

54-82

Report on Proposals — Copyright, NFPA NFPA 54 Table 12.27 Semi-Rigid Copper Tubing

Gas Undiluted PropaneInlet pressure 2.0 psi

Pressure Drop 1.0 psiSpecific Gravity 1.50

Tube Size (in.)

Nominal:K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 413 852 1,732 3,027 4,295 9,175 16,517 26,042 54,240 95,962

20 284 585 1,191 2,081 2,952 6,306 11,352 17,899 37,279 65,954

30 228 470 956 1,671 2,371 5,064 9,116 14,373 29,936 52,963

40 195 402 818 1,430 2,029 4,334 7,802 12,302 25,621 45,330

50 173 356 725 1,267 1,798 3,841 6,915 10,903 22,708 40,175

60 157 323 657 1,148 1,629 3,480 6,266 9,879 20,575 36,40170 144 297 605 1,057 1,499 3,202 5,764 9,088 18,929 33,48980 134 276 562 983 1,394 2,979 5,363 8,455 17,609 31,15590 126 259 528 922 1,308 2,795 5,031 7,933 16,522 29,232

100 119 245 498 871 1,236 2,640 4,753 7,493 15,607 27,612125 105 217 442 772 1,095 2,340 4,212 6,641 13,832 24,472150 95 197 400 700 992 2,120 3,817 6,017 12,533 22,173175 88 181 368 644 913 1,950 3,511 5,536 11,530 20,399200 82 168 343 599 849 1,814 3,267 5,150 10,727 18,978225 77 158 321 562 797 1,702 3,065 4,832 10,064 17,806250 72 149 304 531 753 1,608 2,895 4,564 9,507 16,819

275 69 142 288 504 715 1,527 2,750 4,335 9,029 15,974

300 66 135 275 481 682 1,457 2,623 4,136 8,614 15,24010 413 852 1,730 3,030 4,300 9,170 16,500 26,000 54,200

20 284 585 1,190 2,080 2,950 6,310 11,400 17,900 37,300

30 228 470 956 1,670 2,370 5,060 9,120 14,400 29,900

40 195 402 818 1,430 2,030 4,330 7,800 12,300 25,600

50 173 356 725 1,270 1,800 3,840 6,920 10,900 22,70060 157 323 657 1,150 1,630 3,480 6,270 9,880 20,600

70 144 297 605 1,060 1,500 3,200 5,760 9,090 18,900

80 134 276 562 983 1,390 2,980 5,360 8,450 17,600

90 126 259 528 922 1,310 2,790 5,030 7,930 16,500

100119 245 498 871 1,240 2,640 4,750 7,490 15,600

125105 217 442 772 1,100 2,340 4,210 6,640 13,800

15095 197 400 700 992 2,120 3,820 6,020 12,500

17588 181 368 644 913 1,950 3,510 5,540 11,500

20082 168 343 599 849 1,810 3,270 5,150 10,700

25072 149 304 531 753 1,610 2,900 4,560 9,510

30066 135 275 481 682 1,460 2,620 4,140 8,610

35060 124 253 442 628 1,340 2,410 3,800 7,920

40056 116 235 411 584 1,250 2,250 3,540 7,370

45053 109 221 386 548 1,170 2,110 3,320 6,920

50050 103 209 365 517 1,110 1,990 3,140 6,530

55047 97 198 346 491 1,050 1,890 2,980 6,210

60045 93 189 330 469 1,000 1,800 2,840 5,920

65043 89 181 316 449 959 1,730 2,720 5,670

70041 86 174 304 431 921 1,660 2,620 5,450

75040 82 168 293 415 888 1,600 2,520 5,250

80039 80 162 283 401 857 1,540 2,430 5,070

85037 77 157 274 388 829 1,490 2,350 4,900

90036 75 152 265 376 804 1,450 2,280 4,750

95035 72 147 258 366 781 1,410 2,220 4,620

1,00034 71 143 251 356 760 1,370 2,160 4,490

1,10032 67 136 238 338 721 1,300 2,050 4,270

1,20031 64 130 227 322 688 1,240 1,950 4,070

1,30030 61 124 217 309 659 1,190 1,870 3,900

1,40028 59 120 209 296 633 1,140 1,800 3,740

1,50027 57 115 201 286 610 1,100 1,730 3,610

1,60026 55 111 194 276 589 1,060 1,670 3,480

1,70026 53 108 188 267 570 1,030 1,620 3,370

1,80025 51 104 182 259 553 1,000 1,570 3,270

1,90024 50 101 177 251 537 966 1,520 3,170

2,00023 48 99 172 244 522 940 1,480 3,090

54-83

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.28 Corrugated Stainless Steel Tubing (CSST)Gas Undiluted Propane

Inlet pressure 11.0 in. WCPressure Drop 0.5 in. WC

Specific Gravity 1.50

Tube Size (EHD*)Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Thousands of Btu per Hour5 72 99 181 211 355 426 744 863 1,415 2,830 6,547

10 50 69 129 150 254 303 521 605 971 1,993 4,63815 39 55 104 121 208 248 422 490 775 1,623 3,79120 34 49 91 106 183 216 365 425 661 1,404 3,28525 30 42 82 94 164 192 325 379 583 1,254 2,94030 28 39 74 87 151 177 297 344 528 1,143 2,68440 23 33 64 74 131 153 256 297 449 988 2,32750 20 30 58 66 118 137 227 265 397 884 2,08260 19 26 53 60 107 126 207 241 359 805 1,90270 17 25 49 57 99 117 191 222 330 745 1,76180 15 23 45 52 94 109 178 208 307 696 1,64790 15 22 44 50 90 102 169 197 286 656 1,554

100 14 20 41 47 85 98 159 186 270 621 1,475150 11 15 31 36 66 75 123 143 217 506 1,205200 9 14 28 33 60 69 112 129 183 438 1,045250 8 12 25 30 53 61 99 117 163 390 934300 8 11 23 26 50 57 90 107 147 357 854

5 72 99 181 211 355 426 744 863 1,420 2,830 6,55010 50 69 129 150 254 303 521 605 971 1,990 4,64015 39 55 104 121 208 248 422 490 775 1,620 3,79020 34 49 91 106 183 216 365 425 661 1,400 3,29025 30 42 82 94 164 192 325 379 583 1,250 2,94030 28 39 74 87 151 177 297 344 528 1,140 2,68040 23 33 64 74 131 153 256 297 449 988 2,33050 20 30 58 66 118 137 227 265 397 884 2,08060 19 26 53 60 107 126 207 241 359 805 1,90070 17 25 49 57 99 117 191 222 330 745 1,76080 15 23 45 52 94 109 178 208 307 696 1,65090 15 22 44 50 90 102 169 197 286 656 1,550

100 14 20 41 47 85 98 159 186 270 621 1,480150 11 15 31 36 66 75 123 143 217 506 1,210200 9 14 28 33 60 69 112 129 183 438 1,050250 8 12 25 30 53 61 99 117 163 390 934300 8 11 23 26 50 57 90 107 147 357 854

Table 12.29 Corrugated Stainless Steel Tubing (CSST)Gas Undiluted Propane

Inlet pressure 2.0 psiPressure Drop 1.0 psi

Specific Gravity 1.50

Tube Size (EHD*)Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 426 558 927 1,106 1,735 2,168 4,097 4,720 7,128 15,174 34,20325 262 347 591 701 1,120 1,384 2,560 2,954 4,564 9,549 21,68030 238 316 540 640 1,027 1,266 2,331 2,692 4,176 8,708 19,80140 203 271 469 554 896 1,100 2,012 2,323 3,631 7,529 17,15950 181 243 420 496 806 986 1,794 2,072 3,258 6,726 15,35775 147 196 344 406 663 809 1,457 1,685 2,675 5,480 12,55180 140 189 333 393 643 768 1,410 1,629 2,591 5,303 12,154

100 124 169 298 350 578 703 1,256 1,454 2,325 4,738 10,877150 101 137 245 287 477 575 1,021 1,182 1,908 3,860 8,890200 86 118 213 248 415 501 880 1,019 1,658 3,337 7,705250 77 105 191 222 373 448 785 910 1,487 2,981 6,895300 69 96 173 203 343 411 716 829 1,363 2,719 6,296400 60 82 151 175 298 355 616 716 1,163 2,351 5,457500 53 72 135 158 268 319 550 638 1,027 2,101 4,883

10 426 558 927 1,110 1,740 2,170 4,100 4,720 7,130 15,200 34,20025 262 347 591 701 1,120 1,380 2,560 2,950 4,560 9,550 21,70030 238 316 540 640 1,030 1,270 2,330 2,690 4,180 8,710 19,80040 203 271 469 554 896 1,100 2,010 2,320 3,630 7,530 17,20050 181 243 420 496 806 986 1,790 2,070 3,260 6,730 15,40075 147 196 344 406 663 809 1,460 1,690 2,680 5,480 12,60080 140 189 333 393 643 768 1,410 1,630 2,590 5,300 12,200

100 124 169 298 350 578 703 1,260 1,450 2,330 4,740 10,900150 101 137 245 287 477 575 1,020 1,180 1,910 3,860 8,890200 86 118 213 248 415 501 880 1,020 1,660 3,340 7,710250 77 105 191 222 373 448 785 910 1,490 2,980 6,900300 69 96 173 203 343 411 716 829 1,360 2,720 6,300400 60 82 151 175 298 355 616 716 1,160 2,350 5,460500 53 72 135 158 268 319 550 638 1,030 2,100 4,880

54-131 (Log #99) C. A. continued

54-84

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.30 Corrugated Stainless Steel Tubing (CSST)Gas Undiluted Propane

Inlet pressure 5.0 psiPressure Drop 3.5 psi

Specific Gravity 1.50

Tube Size (EHD*)Flow Designation: 13 15 18 19 23 25 30 31 37 46 62

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 826 1,065 1,713 2,061 3,153 3,999 7,829 8,945 13,112 28,580 63,78825 509 664 1,092 1,307 2,037 2,554 4,864 5,600 8,395 17,986 40,43630 461 603 999 1,193 1,866 2,336 4,430 5,102 7,682 16,403 36,92840 396 520 867 1,033 1,629 2,029 3,822 4,404 6,679 14,183 32,00450 352 463 777 926 1,463 1,819 3,409 3,929 5,993 12,670 28,64275 284 376 637 757 1,206 1,492 2,769 3,194 4,919 10,322 23,40980 275 363 618 731 1,169 1,446 2,677 3,090 4,768 9,990 22,670

100 243 324 553 656 1,051 1,296 2,388 2,756 4,276 8,925 20,287150 196 262 453 535 866 1,062 1,941 2,241 3,511 7,271 16,581200 169 226 393 464 755 923 1,675 1,934 3,052 6,287 14,369250 150 202 352 415 679 828 1,493 1,726 2,738 5,616 12,859300 136 183 322 379 622 757 1,359 1,572 2,505 5,122 11,745400 117 158 279 328 542 657 1,173 1,356 2,178 4,429 10,178500 104 140 251 294 488 589 1,046 1,210 1,954 3,957 9,108

10 826 1,070 1,710 2,060 3,150 4,000 7,830 8,950 13,100 28,600 63,80025 509 664 1,090 1,310 2,040 2,550 4,860 5,600 8,400 18,000 40,40030 461 603 999 1,190 1,870 2,340 4,430 5,100 7,680 16,400 36,90040 396 520 867 1,030 1,630 2,030 3,820 4,400 6,680 14,200 32,00050 352 463 777 926 1,460 1,820 3,410 3,930 5,990 12,700 28,60075 284 376 637 757 1,210 1,490 2,770 3,190 4,920 10,300 23,40080 275 363 618 731 1,170 1,450 2,680 3,090 4,770 9,990 22,700

100 243 324 553 656 1,050 1,300 2,390 2,760 4,280 8,930 20,300150 196 262 453 535 866 1,060 1,940 2,240 3,510 7,270 16,600200 169 226 393 464 755 923 1,680 1,930 3,050 6,290 14,400250 150 202 352 415 679 828 1,490 1,730 2,740 5,620 12,900300 136 183 322 379 622 757 1,360 1,570 2,510 5,120 11,700400 117 158 279 328 542 657 1,170 1,360 2,180 4,430 10,200500 104 140 251 294 488 589 1,050 1,210 1,950 3,960 9,110

54-131 (Log #99) C. A. continued

54-85

Report on Proposals — Copyright, NFPA NFPA 54

Table 12.31 Polyethylene Plastic PipeGas Undiluted Propane

Inlet pressure 11.0 in. WCPressure Drop 0.5 in. WC

Specific Gravity 1.50

Pipe Size (in.)

Nominal OD: 1/23/4 1 11/4 11/2 2

Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943

Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 340 680 1,227 2,126 3,211 5,76920 233 467 844 1,461 2,207 3,96530 187 375 677 1,173 1,772 3,18440 160 321 580 1,004 1,517 2,72550 142 285 514 890 1,344 2,41560 129 258 466 807 1,218 2,18870 119 237 428 742 1,121 2,01380 110 221 398 690 1,042 1,87390 103 207 374 648 978 1,757

100 98 196 353 612 924 1,660125 87 173 313 542 819 1,471150 78 157 284 491 742 1,333175 72 145 261 452 683 1,226200 67 135 243 420 635 1,14110 340 680 1,230 2,130 3,210 5,77020 233 468 844 1,460 2,210 3,97030 187 375 677 1,170 1,770 3,18040 160 321 580 1,000 1,520 2,73050 142 285 514 890 1,340 2,42060 129 258 466 807 1,220 2,19070 119 237 428 742 1,120 2,01080 110 221 398 690 1,040 1,87090 103 207 374 648 978 1,760

100 98 196 353 612 924 1,660125 87 173 313 542 819 1,470150 78 157 284 491 742 1,330175 72 145 261 452 683 1,230200 67 135 243 420 635 1,140250 60 119 215 373 563 1,010300 54 108 195 338 510 916350 50 99 179 311 469 843400 46 92 167 289 436 784450 43 87 157 271 409 736500 41 82 148 256 387 695

54-131 (Log #99) C. A. continued

54-86

Report on Proposals — Copyright, NFPA NFPA 54 Table 12.32 Polyethylene Plastic Pipe

Gas Undiluted PropaneInlet pressure 2.0 psi

Pressure Drop 1.0 psiSpecific Gravity 1.50

Pipe Size (in.)

Nominal OD: 1/23/4 1 11/4 11/2 2

Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943

Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 3,126 6,259 11,293 19,564 29,545 53,085

20 2,148 4,302 7,762 13,446 20,306 36,485

30 1,725 3,454 6,233 10,798 16,307 29,299

40 1,477 2,957 5,335 9,242 13,956 25,076

50 1,309 2,620 4,728 8,191 12,369 22,225

60 1,186 2,374 4,284 7,421 11,207 20,137

70 1,091 2,184 3,941 6,828 10,311 18,526

80 1,015 2,032 3,666 6,352 9,592 17,235

90 952 1,907 3,440 5,960 9,000 16,171

100 899 1,801 3,249 5,629 8,501 15,275

125 797 1,596 2,880 4,989 7,535 13,538

150 722 1,446 2,609 4,521 6,827 12,266

175 664 1,331 2,401 4,159 6,281 11,285

200 618 1,238 2,233 3,869 5,843 10,498

103,130 6,260 11,300 19,600 29,500 53,100

202,150 4,300 7,760 13,400 20,300 36,500

301,730 3,450 6,230 10,800 16,300 29,300

401,480 2,960 5,330 9,240 14,000 25,100

501,310 2,620 4,730 8,190 12,400 22,200

601,190 2,370 4,280 7,420 11,200 20,100

701,090 2,180 3,940 6,830 10,300 18,500

801,010 2,030 3,670 6,350 9,590 17,200

90952 1,910 3,440 5,960 9,000 16,200

100899 1,800 3,250 5,630 8,500 15,300

125797 1,600 2,880 4,990 7,530 13,500

150722 1,450 2,610 4,520 6,830 12,300

175664 1,330 2,400 4,160 6,280 11,300

200618 1,240 2,230 3,870 5,840 10,500

250548 1,100 1,980 3,430 5,180 9,300

300496 994 1,790 3,110 4,690 8,430

350457 914 1,650 2,860 4,320 7,760

400425 851 1,530 2,660 4,020 7,220

450 399 798 1,440 2,500 3,770 6,770

500 377 754 1,360 2,360 3,560 6,390

550 358 716 1,290 2,240 3,380 6,070

600 341 683 1,230 2,140 3,220 5,790

650 327 654 1,180 2,040 3,090 5,550

700 314 628 1,130 1,960 2,970 5,330

750 302 605 1,090 1,890 2,860 5,140

800 292 585 1,050 1,830 2,760 4,960

850 283 566 1,020 1,770 2,670 4,800

900 274 549 990 1,710 2,590 4,650

950 266 533 961 1,670 2,520 4,520

1,000 259 518 935 1,620 2,450 4,400

1,100 246 492 888 1,540 2,320 4,170

1,200 234 470 847 1,470 2,220 3,980

1,300225 450 811 1,410 2,120 3,810

1,400216 432 779 1,350 2,040 3,660

1,500208 416 751 1,300 1,960 3,530

1,600201 402 725 1,260 1,900 3,410

1,700194 389 702 1,220 1,840 3,300

1,800188 377 680 1,180 1,780 3,200

1,900183 366 661 1,140 1,730 3,110

2,000178 356 643 1,110 1,680 3,020

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54-90

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54-133 (Log #101) C.A.

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54-93

Report on Proposals — Copyright, NFPA NFPA 54 Committee Meeting Action: Reject Committee Statement: The proposal does not provide a specific recommendation, i.e., the actual revisions to the tables. Variability between CSST manufacturers makes it impossible to assign nominal sizes.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-135 Log# 79 NFG-AAA Final Action: Accept in Principle(Table 12.22, Table 12.23 (New) ) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: Add new tables as follows:

See tables on page 94

Substantiation: PE Tubing is being used for yard gas line piping and the code lacks sizing tables applicable for natural gas. The code currently contains a PE tubing table for LP (Table 12.33). Table entries were calcualted using the low pressure formula in the 2002 National Fuel Gas Code.Committee Meeting Action: Accept in Principle

See table on page 95Committee Statement: Accept the proposed tables and revise them to be consistent with action taken on other tables to recognize that flows below 10 CFH are shown as N/A as they are too small to be of practical use.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-136 Log# 128 NFG-AAA Final Action: Accept in Principle(Table 12.23 (New) ) ________________________________________________________________Submitter : Terry Swisher , IAPMO / Rep. Committee on Uniform Plumbing CodeRecommendation: Add UPC table 12-12 for LP Gas, Schedule 40, 10 psi with 3 psi pressure drop as a new table in the NFGC.See tables on page 96

Substantiation: The Uniform Plumbing Code (UPC) contains pipe-sizing table for LP gas, schedule 40, 10 psi with 3.0 psi pressure drop. By adding this new table, the NFGC will be more usable and would better coordinate coverage between the UPC and NFGC.Committee Meeting Action: Accept in Principle Add a new Table 12-22 with a 3 psi inlet and 2 psi drop, which has been revised per the tables accepted in 54-131 (Log #99).See revised table on page 97Committee Statement: The revised table will be consistent with the tables approved in Log 99. The committee believes that a 2 psi drop is more realistic for this table.The metric table is not included as it is not needed. Metric conversions are provided.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-137 Log# 2 NFG-AAA Final Action: Reject(13.1, 13.2) ________________________________________________________________Submitter : Richard White, E. , Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling ContractorsRecommendation: Replace Section 10.1 in itʼs entirely with the following: 10.1 Requirements for Single Appliance Vent Tables 10.1 through 10.5.10.1.1 General These venting tables shall not be used where obstructions, as described in the exceptions to Section 7.15, are installed in the venting system.10-1.2 Height Limitations For vent heights lower than 6 ft or higher than shown in the tables, engineering methods shall be used to calculate vent capacities.10.1.3 Vent Dampers The installation of vents serving listed appliances with vent dampers shall be in accordance with the appliance manufacturerʼs instructions or in accordance with the following:(1) The maximum capacity of the vent system shall be determined using the “NAT Max” column.(2) The minimum capacity shall be determined as if the appliance were a fan-assisted appliance, using the “FAN Min” column to determine the minimum capacity of the vent system. Where the corresponding “FAN Min” is “NA,” the vent configuration shall not be permitted and an alternative venting configuration shall be utilized.10.1.4 More than one input rating For appliances with more than one input rate, the minimum vent capacity (FAN Min) determined from the tables shall be less than the lowest appliance input rating, and the maximum vent capacity (FAN Max/NAT Max) determined from the tables shall be greater than the

highest appliance rating input.10.1.5 Minimum Vent Size If the vent size shown in the appropriate tables is smaller than the appliance draft hood outlet or flue collar, the smaller size shall be permitted to be used provided the following requirements are met:(1) The total vent height (H) is at least 10 ft (3 m).(2) Vents for appliance draft hood outlets or flue collars 12 in. (300 mm) in diameter or smaller shall not be reduced more than one table size.(3) Vents for appliance draft hood outlets or flue collars larger than 12 in. (300 mm) in diameter shall not be reduced more than two table sizes.(4) The maximum capacity listed in the tables for a fan-assisted appliance is reduced by 10 percent (0.90 (maximum table capacity). (5) The draft hood outlet is greater than 4 in. (100 mm) in diameter. a. Do not connect a 3-in. (8- cm) diameter vent to a 4-in. (100-mm) diameter draft hood outlet.b. This provision shall not apply to fan-assisted appliances.10-1.6 Vent Connector Size Vent connectors shall be the size of the listed appliance categorized vent diameter, flue collar diameter, or draft hood outlet diameter, except as permitted below:(1) Vent connectors shall be permitted to be increased up to two sizes, but not greater than the vent size.(2) Vent connectors shall be permitted to be reduced provided the requirements of 10.1.5 are met.10-1.7 Larger Vent than Connector (1) If the vertical vent has a larger diameter than the vent connector, the vertical vent diameter shall be used to determine the minimum vent capacity.(2) The connector diameter shall be used to determine the maximum vent capacity. (3) The flow area of the vertical vent shall not exceed seven times the flow area of the listed appliance categorized vent area, flue collar area, or draft hood outlet area unless designated in accordance with approved engineering methods.10-1.8 Elbows in the Vent (1) Single-appliance venting configurations with zero (0) lateral lengths in Tables 10.1, 10.2, and 10.5 shall have no elbows in the venting system.(2) Zero (0) lateral (L) shall apply only to a straight vertical vent attached to a top outlet draft hood or flue collar. (3) For vent configurations with lateral lengths, the venting tables include allowance for two 90 degree turns. a. For each additional 90 degree turn, or equivalent, the maximum capacity listed in the venting tables shall be reduced by 10 percent (0.90 X maximum table capacity).b. Two or more turns, the combined angles of which equal 90 degrees, shall be considered equivalent to one 90 degree turn.10-1.9 Chimney Liner Systems Listed corrugated metallic chimney liner systems in masonry chimneys shall be sized by using Table 10.1 or 10.2 for Type B vents, with the following limitations:(1) The maximum capacity shall be reduced by 20 percent (0.80 x maximum capacity)(2) The minimum capacity shall be as shown in Table 10.1 or 10.2.(3) Corrugated metallic liner systems installed with bends or offsets shall have their maximum capacity further reduced in accordance with 10.1.8.10.1.10 Exposure to Outdoors (1) Tables 10.1 through 10.5 shall be used for chimneys and vents not exposed to the outdoors below the roof line.(2) A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors.(4) Table 10.3 in combination with Table 10.11 shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following are met:a. Vent connector is Type B double wall.b. Vent connector length is limited to 11/2 ft for each inch (18 mm/mm) of vent connector diameter.c. The appliance is draft hood-equipped.d. The input rating is less than the maximum capacity given by Table 10.3.e. For a water heater, the outdoor design temperature shall not be less than 5ºF (-15ºC).f. For a space-heating appliance, the input rating is greater than the minimum capacity given by Table 10.11.Exception: The installation of vents serving listed appliances shall be permitted to be in accordance with the appliance manufacturerʼs instructions and the terms of the listing.10-1.11 Variations in Material and Size In a single run of vent or vent connector, more than one diameter and type shall be permitted to be used, provided that all the sizes and types are permitted by the tables and these rules.10-1.12 High-Altitude Input Ratings Sea level input ratings shall be used when determining maximum capacity for high altitude installation. Actual input (derated for altitude) shall be used for determining minimum capacity for high altitude installation.10-1.13 Interpolation Interpolation shall be permitted in calculating capacities for vent dimensions that fall between table entries. (See Example 3, Appendix G.)10-1.14 Extrapolation Extrapolation beyond the table entries shall not be permitted.For SI units: 1 in = 25 mm; 1 ft = 0.305 m; 1000 Btu/hr = 0.293 kW; 1 in◊ = 645 mm◊ 10.2 Applications of Multiple Appliance Vent Tables 10.6 through 10.13(a) and

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Table 12-12 Sizing of IPS Pipe for Undiluted LPGGas Undiluted LPGInlet Pressure 10.0 psi Pressure Drop 3.0 psiSpecific Gravity 1.52

Pipe Size, inches1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 4 5 6

Lengthfeet

Maximum Delivery Capacity in Cubic Feet per Hour

50 1,000 2,070 3,899 8,005 11,994 23,100 36,818 65,088100 690 1,423 2,680 5,502 8,244 15,877 25,305 44,734150 550 1,142 2,152 4,418 6,620 12,750 20,,321 35,923200 470 978 1,842 3,782 5,666 10,912 17,392 30,746250 420 867 1,632 3,351 5,022 9,671 15,414 27,243300 390 785 1,479 3,037 4,550 8,763 13,966 24,690350 350 722 1,361 2,794 4,186 8,062 12,849 22,714400 325 672 1,266 2,599 3,894 7,500 11,953 21,131450 300 631 1,188 2,439 3,654 7,037 11,215 19,827500 285 596 1,122 2,303 3,451 6,647 10,594 18,728550 272 566 1,066 2,188 3,278 6,313 10,062 17,787600 260 540 1,017 2,087 3,127 6,023 9,599 16,969650 250 517 973 1,999 2,995 5,767 9,192 16,250 33,145700 240 496 935 1,920 2,877 5,541 8,311 15,611 31,842750 230 478 901 1,850 2,772 5,338 8,507 15,040 30,676800 222 462 870 1,786 2,676 5,155 8,215 14,523 29,623850 215 447 842 1,729 2,590 4,988 7,950 14,055 28,667900 208 433 816 1,676 2,511 4,836 7,708 13,627 27,795950 202 421 793 1,628 2,439 4,697 7,486 13,234 26,993

1000 198 409 771 1,583 2,372 4,568 7,281 12,872 26,2551100 188 389 732 1,504 2,253 4,339 6,915 12,225 24,9351200 180 371 699 1,434 2,149 4,139 6,597 11,663 23,7891300 171 355 669 1,374 2,058 3,964 6,318 11,169 22,7801400 164 341 643 1,320 1,977 3,808 6,069 10,730 21,8851500 158 329 619 1,271 1,905 3,669 5,847 10,337 21,083 38,143 61,7621600 152 317 598 1,228 1,839 3,543 5,646 9,982 20,360 36,834 59,6431700 148 307 579 1,138 1,780 3,428 5,464 9,660 19,705 35,645 57,7181800 143 298 561 1,152 1,726 3,324 5,298 9,366 19,103 34,560 55,9611900 139 289 545 1,119 1,676 3,228 5,145 9,096 18,552 33,564 54,3482000 136 281 530 1,088 1,630 3,140 5,004 8,847 18,045 32,645 52,8602100 133 274 516 1,060 1,588 3,058 4,874 8,616 17,575 31,795 51,4832200 130 267 503 1,033 1,548 2,982 4,753 8,402 17,138 31,005 50,2042300 127 261 491 1,009 1,512 2,911 4,640 8,203 16,731 30,268 49,0112400 124 255 480 986 1,477 2,845 4,534 8,016 16,350 29,579 47,8952500 121 249 470 964 1,445 2,783 4,435 7,841 15,993 28,933 46,8492600 118 244 460 944 1,415 2,724 4,342 7,676 15,657 28,325 45,865

Table 12-12 (Metric) Sizing of IPS Pipe for Undiluted LPGGas Undiluted LPGInlet Pressure 68.9 kPaPressure Drop 20.7 kPaSpecific Gravity 1.52

Pipe Size, millimeters15 20 25 32 40 50 65 80 100 125 150

Length meters Maximum Delivery Capacity in Liters per Second

15.2 8.0 16.6 31.2 64.0 96.0 184.8 294.5 520.730.4 5.5 11.4 21.4 44.0 66.0 127.0 202.4 357.945.6 4.4 9.1 17.2 35.3 53.0 102.0 162.6 287.460.8 3.8 7.8 14.7 30.3 45.3 87.3 139.1 246.076.0 3.4 6.9 13.1 26.8 40.2 77.4 123.3 218.091.2 3.0 6.3 11.8 24.3 36.4 70.1 111.7 197.5

106.4 2.8 5.8 10.9 22.4 33.5 64.5 102.8 181.7121.6 2.6 5.4 10.1 20.8 31.2 60.0 95.6 169.1136.8 2.4 5.1 9.5 19.5 29.2 56.3 89.7 158.6152.0 2.3 4.8 9.0 18.4 27.6 53.2 84.8 149.8167.2 2.2 4.5 8.5 17.5 26.2 50.5 80.5 142.3182.4 2.1 4.3 8.1 16.7 25.0 48.2 76.8 135.8197.6 2.0 4.1 7.8 16.0 24.0 46.1 73.5 130.0 265.2212.8 1.9 4.0 7.5 15.4 23.0 44.3 70.7 124.9 254.7228.0 1.8 3.8 7.2 14.8 22.2 42.7 68.1 120.3 245.4243.2 1.8 3.7 7.0 14.3 21.4 41.2 65.7 116.2 237.0258.4 1.7 3.6 6.7 13.8 20.7 39.9 63.6 112.4 229.3273.6 1.7 3.5 6.5 13.4 20.1 38.7 61.7 109.0 222.4288.8 1.6 3.4 6.3 13.0 19.5 37.6 60.0 105.9 215.9304.0 1.6 3.3 6.2 12.7 19.0 36.5 58.2 103.0 210.0334.4 1.5 3.1 5.9 12.0 18.0 34.7 55.3 97.8 199.5364.8 1.4 3.0 5.6 11.5 17.2 33.1 52.8 93.3 190.3395.2 1.4 2.8 5.4 11.0 16.5 31.7 50.5 89.4 182.2425.6 1.3 2.7 5.1 10.6 15.8 30.5 48.6 85.8 175.1456.0 1.3 2.6 5.0 10.2 15.2 29.4 46.8 82.7 168.7 305.1 494.1486.4 1.2 2.5 4.8 9.8 14.7 28.3 45.2 79.9 162.9 294.7 477.1516.8 1.2 2.5 4.6 9.1 14.2 27.4 43.7 77.3 157.6 285.2 461.7547.2 1.1 2.4 4.5 9.2 13.8 26.6 42.4 74.9 152.8 276.5 447.7577.6 1.1 2.3 4.4 9.0 13.4 25.8 41.2 72.8 148.4 268.5 434.8608.0 1.1 2.2 4.2 8.7 13.0 25.1 40.0 70.8 144.4 261.2 422.9638.4 1.1 2.2 4.1 8.5 12.7 24.5 39.0 68.9 140.6 254.4 411.9668.8 1.0 2.1 4.0 8.3 12.4 23.9 38.0 67.2 137.1 248.1 401.6699.2 1.0 2.1 3.9 8.1 12.1 23.3 37.1 65.6 133.8 242.1 392.1729.6 1.0 2.0 3.8 7.9 11.8 22.8 36.3 64.1 130.8 236.6 383.2760.0 1.0 2.0 3.8 7.7 11.6 22.3 35.5 62.7 127.9 231.5 374.8790.4 0.9 2.0 3.7 7.6 11.3 21.8 34.7 61.4 125.3 226.6 366.9

54-136 (Log #128) rec

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Report on Proposals — Copyright, NFPA NFPA 54

Table 12.22 Schedule 40 Metallic PipeGas Undiluted Propane

Inlet pressure 10.0 psiPressure Drop 3.0 psi

Specific Gravity 1.50

SPECIAL USE: Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator)

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 2 1/2 3 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Capacity in Thousands of Btu per Hour10 5,890 12,300 23,200 47,600 71,300 137,000 219,000 387,000 789,00020 4,050 8,460 15,900 32,700 49,000 94,400 150,000 266,000 543,00030 3,250 6,790 12,800 26,300 39,400 75,800 121,000 214,000 436,00040 2,780 5,810 11,000 22,500 33,700 64,900 103,000 183,000 373,00050 2,460 5,150 9,710 19,900 29,900 57,500 91,600 162,000 330,00060 2,230 4,670 8,790 18,100 27,100 52,100 83,000 147,000 299,00070 2,050 4,300 8,090 16,600 24,900 47,900 76,400 135,000 275,00080 1,910 4,000 7,530 15,500 23,200 44,600 71,100 126,000 256,00090 1,790 3,750 7,060 14,500 21,700 41,800 66,700 118,000 240,000

100 1,690 3,540 6,670 13,700 20,500 39,500 63,000 111,000 227,000125 1,500 3,140 5,910 12,100 18,200 35,000 55,800 98,700 201,000150 1,360 2,840 5,360 11,000 16,500 31,700 50,600 89,400 182,000175 1,250 2,620 4,930 10,100 15,200 29,200 46,500 82,300 167,800200 1,160 2,430 4,580 9,410 14,100 27,200 43,300 76,500 156,100250 1,030 2,160 4,060 8,340 12,500 24,100 38,400 67,800 138,400300 935 1,950 3,680 7,560 11,300 21,800 34,800 61,500 125,400350 860 1,800 3,390 6,950 10,400 20,100 32,000 56,500 115,300400 800 1,670 3,150 6,470 9,690 18,700 29,800 52,600 107,300450 751 1,570 2,960 6,070 9,090 17,500 27,900 49,400 100,700500 709 1,480 2,790 5,730 8,590 16,500 26,400 46,600 95,100550 673 1,410 2,650 5,450 8,160 15,700 25,000 44,300 90,300600 642 1,340 2,530 5,200 7,780 15,000 23,900 42,200 86,200650 615 1,290 2,420 4,980 7,450 14,400 22,900 40,500 82,500700 591 1,240 2,330 4,780 7,160 13,800 22,000 38,900 79,300750 569 1,190 2,240 4,600 6,900 13,300 21,200 37,400 76,400800 550 1,150 2,170 4,450 6,660 12,800 20,500 36,200 73,700850 532 1,110 2,100 4,300 6,450 12,400 19,800 35,000 71,400900 516 1,080 2,030 4,170 6,250 12,000 19,200 33,900 69,200950 501 1,050 1,970 4,050 6,070 11,700 18,600 32,900 67,200

1,000 487 1,020 1,920 3,940 5,900 11,400 18,100 32,000 65,4001,100 463 968 1,820 3,740 5,610 10,800 17,200 30,400 62,1001,200 442 923 1,740 3,570 5,350 10,300 16,400 29,000 59,2001,300 423 884 1,670 3,420 5,120 9,870 15,700 27,800 56,7001,400 406 849 1,600 3,280 4,920 9,480 15,100 26,700 54,5001,500 391 818 1,540 3,160 4,740 9,130 14,600 25,700 52,5001,600 378 790 1,490 3,060 4,580 8,820 14,100 24,800 50,7001,700 366 765 1,440 2,960 4,430 8,530 13,600 24,000 49,0001,800 355 741 1,400 2,870 4,300 8,270 13,200 23,300 47,6001,900 344 720 1,360 2,780 4,170 8,040 12,800 22,600 46,2002,000 335 700 1,320 2,710 4,060 7,820 12,500 22,000 44,900

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54-98

Report on Proposals — Copyright, NFPA NFPA 54 (b).10.2.1 General The following general requirements shall be met: (1) These venting tables shall not be used where obstructions, as described in the exceptions to Section 7.15, are installed in the venting system.(2) All combinations of pipe sizes, single-wall, and double-wall metal pipe shall be allowed within any connector run(s) or within the common vent, provided ALL of the appropriate tables permit ALL of the desired sizes and types of pipe, as if they were used for the entire length of the subject connector or vent. a. If single-wall and Type B double-wall metal pipes are combined for vent connectors, the common vent must be sized using Table 10.7 or Table 10.9 as appropriate.(3) Where a table permits more than one diameter of pipe to be used for a connector or vent, all the permitted sizes shall be permitted to be used.(4) Interpolation shall be permitted in calculating capacities for vent dimensions that fall between table entries. (See Example 3, Appendix G.)(5) Extrapolation beyond table entries shall not be permitted.(6) For vent heights lower than 6 ft and higher than shown in the tables, engineering methods shall be used to calculate vent capacities.(7) Listed, corrugated-metallic chimney-liner systems in masonry chimneys shall be sized by using Table 10.6 or 10.7 for Type B vents, with the maximum capacity reduced by 20 percent (0.80 x maximum common vent capacity) and the minimum capacity as shown in the connector portion of Table 10.6 or 10.7. (8) Tables 10.6 through 10.10 shall be used for chimneys and vents not exposed to the outdoors below the roof line.a. Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors.b. Corrugated-metallic liner systems installed with bends or offsets shall have their maximum capacity further reduced in accordance with 10.2.5 and 10.2.6.(9) Tables 10.12(a) and (b) and 10.13(a) and (b) shall be used for clay-tile-lined exterior masonry chimneys, provided all the following conditions are met:a. The vent connector is Type B double-wall.b. At least one appliance is draft hood-equipped.c. The combined appliance input rating is less than the maximum capacity given in Table 10.12(a) (for NAT +NAT) or Table 10.13(a) (for FAN + NAT).d. The input rating of each space-heating appliance is greater than the minimum input rating given by Table 10.12(b) (for NAT + NAT) or Table 10.13(b) (for FAN + NAT).e. The vent connector sizing is in accordance with Table 10.8.If these conditions cannot be met, an alternative venting design shall be used, such as a listed chimney lining system.Exception: The installation of vents serving listed appliances shall be permitted in accordance with the manufacturerʼs instructions and the terms if the listing.10.2.2 Vent Connectors for Appliance(s) with Vent Dampers The installation of vents serving listed appliances with vent dampers shall be in accordance with the appliance manufacturerʼs instructions, or in accordance with the following (in all cases, use the table that is appropriate for the connector and vent materials):(1) The maximum capacity of the vent connector shall be determined using the NAT Max column.(2) The maximum capacity of the vertical vent or chimney shall be determined using the FAN+NAT column when the second appliance is a fan-assisted appliance, or the NAT+NAT column when the second appliance is equipped with a draft hood.(3) The minimum capacity shall be determined as if the appliance were a fan-assisted appliance.a. The minimum capacity of the vent connector shall be determined using the FAN Min column.b. The FAN+FAN column shall be used when the second appliance is a fan-assisted appliance, and the FAN+NAT column shall be used when the second appliance is equipped with a draft hood, to determine whether the vertical vent or chimney configuration is not permitted (NA). Where the vent configuration is NA, the vent configuration shall not be permitted and an alternative venting configuration shall be utilized.10.2.3 Typical Vent Connectors Vent connectors shall conform to the following requirements:(1) The maximum vent connector horizontal length shall be 18 in/in (18 mm/mm) of connector diameter as follows:

(2) Connectors with longer lengths than those listed in 10.2.3 are permitted under the following conditions:a. The maximum capacity (FAN Max or NAT Max) of the vent connector shall be reduced 10 percent for each addition multiple of the length listed in 10.2.2 [sic]. For example, the maximum length listed for 4” (100-mm) connector is 6 ̓(1.8 m). With a connector greater than 6 ̓but not exceeding 12 ̓(3.7 m), the maximum capacity must be reduced by 10 percent (0.90 x maximum vent connector capacity). With a connector length greater than 12 ̓(3.7 m) but not exceeding 18 ̓(5.5 m), the maximum capacity must be reduced by 20 percent (0.80 x maximum vent capacity).b. For a connector serving a fan-assisted appliance, the minimum capacity (FAN Min) of the connector shall be determined by referring to the corresponding single appliance table, For Type B double-wall connectors, Table 10.1 shall be used. For single-wall connectors, Table 10.2 shall be used. The height (H) and lateral (L) shall be measured according to the procedure for single appliance vent, as if the other appliance were not present.(3) The vent connector shall be routed to the vent utilizing the shortest possible route.(4) If the vent connectors are combined prior to entering the common vent, the maximum common vent connector capacity listed in the common venting tables shall be reduced by 10 percent (0.90 x maximum common vent connector capacity). The length of the common vent connector manifold (LM) shall not exceed 18 in/in (18 mm/mm) of common vent connector manifold diameter (D).(5) The size of the lowest connector of a multistory system shall be in accordance with Table 10.1 or 10.2 for available total height (H) up to the lowest interconnection.. (See Figure G.14.)(6) For appliances with more than one input rate, the minimum vent connector capacity (FAN Min) determined from the tables shall be less than the lowest appliance input rating, and the maximum vent connector capacity (FAN Max or NAT Max) determined from the tables shall be greater than the highest input rating.(7) Interconnection fittings shall be the same size as the common vent.(8) Vent connectors shall not be upsized more than two sizes greater than the listed appliance categorized vent diameter, flue collar diameter, or draft hood outlet diameter. Vent connectors for draft hood-equipped appliances shall not be smaller than the draft hood outlet diameter. If a vent connector size(s) determined from the tables for a fan-assisted appliance(s) is smaller than the flue collar diameter, the smaller size shall be permitted to be used provided the following conditions are met:a. Vent connectors for fan-assisted appliance flue collars 12 in diameter or smaller are not reduced by more than one table size [e.g., 12 in to 10 in (300 mm to 250 mm) is a one-size reduction]; and those larger than 12 in (300 mm) in diameter are not reduced more than two table sizes [e.g., 24 in to 20 in (610 mm to 510 mm) is a two-size reduction].b. The fan-assisted appliance(s) is common vented with a draft hood-equipped appliance(s).10-2.4 Vertical Vents and Chimneys Vertical vents and chimneys shall conform to the following requirements:(1) If the common vertical vent is offset as shown in Figure G.12, the maximum common vent capacity listed in the common venting tables shall be reduced by 20 percent (0.80 x maximum common vent capacity), the equivalent of two 90 degree turns. The horizontal length of the common vent offset (LO) shall not exceed 18 in/in (18 mm/mm) of common vent diameter (D).a. Excluding elbows counted in 10.2.4(1), for each additional 90 degree turn in excess of two, the maximum capacity of that portion of the venting system shall be reduced by 10 percent (0.90 x maximum common vent capacity)b.Two or more turns, the combined angles of which equal 90 degrees, shall be considered equivalent to one 90 degree turn.(2) The cross-sectional area of the common vent shall be equal to or greater than the cross-sectional area of the largest connector.(3) Where used in multistory systems, vertical common vents shall be Type B double-wall and shall be installed with a listed vent cap.10.2.5 Input Ratings for High-Altitude Installations (1) Sea-level input ratings shall be used when determining maximum capacity for high-altitude installations. (2) Actual input (derated for altitude) shall be used for determining minimum capacity for high-altitude installations.10.2.6 Vent and Connector Geometry (See Figures G.6 through G.14.)(1) The connector rise (R) for each appliance connector shall be measured from the draft hood outlet or flue collar to the centerline where the vent gas streams come together.(2) For appliances located on one floor, available total height (H) shall be measured from the highest draft hood outlet or flue collar up to the level of the outlet of the common vent.(3) For multistory installations, available total height (H) for each segment of the system shall be the vertical distance between the highest draft hood outlet or flue collar entering that segment and the centerline of the outlet of the next higher interconnection tee. (See Figure G.13.)(4) The size of the lowest vertical vent leading to the lowest interconnection of a multistory system shall be in accordance with Table 10.1 or 10.2 for available total height (H) up to the lowest interconnection.. (See Figure G.14.)(5) A multistory common vertical vent shall be permitted to have a single offset, provided all the following requirements are met:

Table 13.2.2 Vent Connector Maximum LengthConnectorDiameterMaximum

(in.)

ConnectorHorizontal

Length(ft)

3 4 1/24 65 7 1/26 97 10 1/28 129 13 1/2

10 1512 1814 2116 2418 2720 3022 3324 36

For SI units, 1 in. = 25.4 mm; 1 ft = 0.305 m.

54-99

Report on Proposals — Copyright, NFPA NFPA 54 a. The offset angle does not exceed 45 degrees.b. The horizontal length of the offset does not exceed 18”/” (etc) of common vent diameter of the segment in which the offset is located.c. For the segment of the common vent containing the offset, the common vent capacity shall be reduced by 20 percent (0.80 x maximum common vent capacity).d. A multistory common vent shall not be reduced in size above the offset.(6) Where two or more appliances are connected to a vertical vent or chimney, the flow area of the largest section of vertical vent or chimney shall not exceed seven times the smallest listed appliance categorized vent areas, flue collar area, or draft hood outlet area unless designed in accordance with approved engineering methods.For SI units: 1 in = 25 mm; 1 in◊ = 645 mm◊; 1 ft = 0.305 m; 1000 Btu/hr = 0.293 kW Substantiation: To eliminate inconsistencies, improve order, make code easier to use and interpret. Committee Meeting Action: Reject Committee Statement: The section titles added in the 2001 edition and other revisions have accomplished the intent of the proposal.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-138 Log# 25 NFG-AAA Final Action: Accept(13.1.3) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 13.1.3 Elbows. Single-appliance venting configurations with zero (0) lateral lengths in Tables 13.1, 13.2, and 13.5 shall not have elbows in the venting system. For vent configurations with lateral lengths, the venting tables include allowance for two 90-degree turns. For each additional elbow up to and including 45-degrees, the maximum capacity listed in the venting tables shall be reduced by 5 percent. For each additional elbow greater than 45-degrees up to and including 90-degrees, the maximum capacity listed in the venting tables shall be reduced by 10 percent. Substantiation: This revision clarifies that intent and is consistent with section 13.2.7.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-139 Log# CP103 NFG-AAA Final Action: Accept(13.1.3) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:13.1.3 Elbows. Single-appliance venting configurations with zero (0) lateral lengths in Table 13.1, Table 13.2, and Table 13.5 shall not have elbows in the venting system. Single-appliance venting with lateral lengths include two 90 degree elbows. For each additional elbow up to and including 45 degrees, the maximum capacity listed in the venting tables shall be reduced by 5 percent. For each additional elbow greater than 45 degrees up to and including 90 degrees, the maximum capacity listed in the venting tables shall be reduced by 10 percent. Substantiation: 13.1.3 is confusing to some readers.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-140 Log# 83 NFG-AAA Final Action: Accept in Principle(13.1.8 (New) ) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 13.1.8. Connection to Liners. Connections between chimney liners and double-wall connectors shall be made with approved adapters designed for such purpose. Substantiation: Proper adapters are needed to avoid backwards male/female connections and other makeshift connections in the field. Committee Meeting Action: Accept in Principle 13.1.8. Connection to Chimney Liners. Connections between chimney liners and listed double-wall connectors shall be made with listed adapters designed for such purpose. Committee Statement: Accepted with editorial revisions and requiring adapters be listed.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-141 Log# 26 NFG-AAA Final Action: Accept in Principle(13.1.9) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 13.1.9 Exterior Chimneys and Vent s Locations . Table

13.1 through table 13.5 shall not be used for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. Table 13.3 in combination with Table 13.11 shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following are met: Substantiation: Relocating the word “not” does not change the meaning of this sentence, however, it does serve to clarify the intent. The intent is that the tables must NOT be used if the chimney or vent IS exposed to the outdoors below the roof line. In other words, donʼt use the tables for exterior chimneys and vents. The current text does not prevent the tables from being used with exterior chimneys and vents. This revision does nothing more than make the code say what it intends by addressing the real issue. Committee Meeting Action: Accept in Principle 13.1.9 Exterior Chimneys and Vent s Locations . Table 13.1 through table 13.5 shall only be used for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. Table 13.3 in combination with Table 13.11 shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following are met: Committee Statement: The title change is accepted. The change of the word not is not accepted as it does not state what tables should be used. The word “only” is added for clarification.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-142 Log# CP104 NFG-AAA Final Action: Accept(13.1.9, 13.2.20) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Add new text as follows: 13.1.9.3 Draft hood conversion accessories for use with masonry chimneys venting listed Category I fan-assisted appliances shall be listed and installed in accordance with the listed accessory manufacturers installation instructions. 13.2.20.3 Draft hood conversion accessories for use with masonry chimneys venting listed Category I fan-assisted appliances shall be listed and installed in accordance with the listed accessory manufacturers installation instructions. Substantiation: Several furnace manufacturers have conversion kits listed for use with their furnaces and include installation instructions. The code does not address conversion kits that are used with fan-assisted appliances to enable them to use existing masonry vents. Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-143 Log# CP106 NFG-AAA Final Action: Accept(13.1.9, 13.2.20) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:13.1.9 Exterior Chimneys and Vents. Table 13.1 through Table 13.5 shall be used for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. A type B vent passing through an unventilated enclosure or chase insulated to a value of not less than R 8 shall not be considered to be exposed to the outdoors. Table 13.3 in combination with Table 13.11 shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following are met:Remainder unchanged.13.2.20 Exterior Chimneys and Vents. Tables 13.6 through Table 13.10 shall be used for chimneys and vents not exposed to the outdoors below the roof line. A type B vent passing through an unventilated enclosure or chase insulated to a value of not less than R 8 shall not be considered to be exposed to the outdoors. Table 13.12(a), Table 13.12(b), Table 13.13(a) and Table 13.13(b) shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following conditions are met: Substantiation: The NFGC does not prohibit outdoor installations but does not contain code coverage enabling the use of the venting tables in such applications. The panel believes that outdoor type B vents installed in a purposely built chase is an acceptable installation. The value of R 8 is taken from energy codes.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-144 Log# 78 NFG-AAA Final Action: Accept in Principle(13.1.13) ________________________________________________________________Submitter : James Ranfone , American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) CommitteeRecommendation: 13.1.3 Elbows. Single-appliance venting configurations

54-100

Report on Proposals — Copyright, NFPA NFPA 54 with zero (0) lateral lengths in Tables 13.1, 13.2, and 13.5 shall not have elbows in the venting system. For vent configurations with lateral lengths, the venting tables include allowance for two 90-degree turns. For each additional elbow up to and including 45-degrees, the maximum capacity listed in the venting tables shall be reduced by 5 percent. For each additional elbow greater than 45-degrees up to and including 90-degrees, the maximum capacity listed in the venting tables shall be reduced by 10 percent. Substantiation: The word “additional” is added to clarify that only the extra elbows that are in addition to the two-turn allowance are subject to the percent reduction. This is similar language that is used in 13.2.7. Committee Meeting Action: Accept in Principle Committee Statement: Refer to Committee Action on 54-138 (Log #25).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-145 Log# 85 NFG-AAA Final Action: Accept(13.2.9 (New) ) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 13.2.9 Tee and Wye Fittings. Tee and wye fittings connected to a common vent shall be considered as part of the common vent and constructed of materials consistent with that of the common vent. Substantiation: The code is silent on the use of single-wall tees and wyes with Type B common vents. Since the tee or wye is part of the common vent portion of the system, it should be constructed as required for the common vent.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-146 Log# 29 NFG-AAA Final Action: Accept in Principle(13.2.20) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 13.2.20 Exterior Chimneys and Vent s Locations. Table 13.6 through Table 13.10 shall not be used for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. Table 13.12(a), Table 13.12(b), Table 13.13(a) and Table 13.13(b) shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following conditions are met: Substantiation: Relocating the word “not” does not change the meaning of this sentence, however, it does serve to clarify the intent. The intent is that the tables must NOT be used if the chimney or vent IS exposed to the outdoors below the roof line. In other words, donʼt use the tables for exterior chimneys and vents. The current text does not prevent the tables from being used with exterior chimneys and vents. This revision does nothing more than make the code say what it intends by addressing the real issue. Committee Meeting Action: Accept in Principle 13.2.20 Exterior Chimneys and Vent s Locations. Table 13.6 through Table 13.10 shall only be used for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. Table 13.12(a), Table 13.12(b), Table 13.13(a) and Table 13.13(b) shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following conditions are met: Committee Statement: Action is taken to be consistent with 54-141 (Log #26).Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-147 Log# 84 NFG-AAA Final Action: Accept in Principle(13.2.20 (New) ) ________________________________________________________________Submitter : Gregg Gress, Glen Edgar , International Code CouncilRecommendation: 13.2.20 Connections to Liners. Where double-wall connectors are required, tee and wye fittings used to connect to the common vent chimney liner shall be double-wall fittings. Connections between chimney liners and double-wall fittings shall be made with approved adapter fittings designed for such purpose. Substantiation: A liner in a chimney is treated as a Type B vent system, therefore fittings in the common vent portion should be as required for Type B vent systems. Proper adapters are needed to avoid backwards male/female connections and other makeshift connections in the field.Committee Meeting Action: Accept in Principle 13.2.20 Connections to Chimney Liners. Where double-wall connectors are required, tee and wye fittings used to connect to the common vent chimney liner shall be listed double-wall fittings. Connections between chimney liners and listed double-wall fittings shall be made with listed adapter fittings designed for such purpose. Committee Statement: Accepted, and edits consistent with 54-140 (Log #83) are made.

Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-148 Log# 135 NFG-AAA Final Action: Accept(13.2.21) ________________________________________________________________Submitter : James P. Brewer , Magic Sweep Corp. / Rep. National Chimney Sweep GuildRecommendation: Change section title from “Vent Connector Upsizing” to “Vent Connector Sizing”Substantiation: Section 13.2.21 contains information on both upsizing and downsizing of the connector so “Vent Connector Sizing” is a more accurate description of the section contents.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-149 Log# CP119 NFG-AAA Final Action: Accept(13.11) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: 1. Relocate Table 13.11 to Table 13.62. Revise the “Title Box” to read:Table 13.11 Exterior Masonry ChimneySpecial Use: Minimum Allowable Input Rating of Space-Heating Appliance in Thousands of Btu per HourNumber of Appliances: One Single Appliance Type: NATAppliance Vent Connection: Type B Double Wall ConnectorSubstantiation: The table is relocated to group all single appliance tables.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-150 Log# 130 NFG-AAA Final Action: Accept(A.7.1.4.3) ________________________________________________________________Submitter : James P. Brewer , Magic Sweep Corp. / Rep. National Chimney Sweep GuildRecommendation: Add Annex A Section 7.1.4.3 as follows:During pressure tests conducted over long periods of time, such as overnight, the effects of temperature on pressure should be considered. Temperature drops can cause a drop in pressure great enough to be indicated by the test gauge. These temperature drops may cause test evaluators to think that a leak exists in the piping system when in fact the pressure drop was caused by a decrease in the ambient temperature. See example C.7.5Add example to Annex C as follows:C.7.5 Example 5 - Calculating Pressure Drops due to Temperature Changes - A test piping system is installed on a warm autumn afternoon when the temperature is 70 degrees. In accordance with local custom the new piping system is subjected to an air pressure test at 20 psig. Overnight, the temperature drops and when the inspector shows up first thing in the morning the temperature is 40 degrees.If the volume of the piping system is unchanged, then the formula based on Boyleʼs and Charles ̓law for determining the new pressure at a reduced temperature is as follows:

where:T1 = Initial Temperature, absolute (T1 + 459) T2 = Final Temperature, absolute (T2 + 459) P1 = Initial pressure, psia (P1 + 14.7)P2 = Final pressure, psia (P2 + 14.7)

54-L130Equations-A05 ROP

1)

T1

T2

�P1

P2

2)

(70 � 459)

(40 � 459)�

(20 �14.7)

(P2 �14.7)

54-101

Report on Proposals — Copyright, NFPA NFPA 54

P2 = 32.7–14.7

P2 =18 psig

Therefore, you could expect the gauge to register 18 psig when the ambient temperature is 40 degrees.Substantiation: The intent of this proposal is to add clarifying information to the annex. Many times contractors have installations rejected because the AHJ believes a leak exists in the gas piping when the pressure drop is slight and caused by a decrease in temperature.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTComment on Affirmative VIRGIL: I vote affirmative with editorial comments.The Proposal number is missing (i.e., 54- 150 )Replace “Pgauge ” with “P2 ” in two places for consistency within C.7.5 Example 5.

_______________________________________________________________54-151 Log# 4 NFG-AAA Final Action: Reject(Figure A.10.8.1, Figure A.10.8.2, 10.8.1, 10.8.2, 10.8.3, 10.8.4) ________________________________________________________________2002: The comment proposed something that could not be properly handled within the time frame for processing the 2002 edition of NFPA 54, and was held for the 2005 edition. Submitter : Drew Smith , State Industries, Inc. / Rep. State Industries, Inc.Recommendation: Replace Figure A.10.8 with the following two figures:

Also, revise wording in 10.8.1, 10.8.2, 10.8.3 and 10.8.4 should be revised to agree with proposed revisions to new Figures A.10.8.1 and A.10.8.2

Substantiation: The current Figure A.10.8 and stated clearances do not adequately reflect the three types of through-the-wall vented appliances available today in the field. These are (1) direct vent, gravity type, (2) power vent, and (3) power direct vent.Committee Meeting Action: Reject Committee Statement: The proposed drawing have not been adopted by all product standards.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

54_L130eq3 A05 ROP

3)

529

499�

34.7

(P2 �14.7)

54-L130eq4. A05 ROP

4)

(P2 �14.7) �34.7

1.06

54-102

Report on Proposals — Copyright, NFPA NFPA 54 _______________________________________________________________54-152 Log# CP135 NFG-AAA Final Action: Accept(C.1, C.3.4) ________________________________________________________________Submitter : Technical Committee on National Fuel Gas Code Recommendation: C.1 General. The first goal of determining the pipe sizing of a fuel gas piping system is to be assured that there is sufficient gas pressure at the inlet to each appliance. The majority of systems are residential, and the appliances will all have the same, or nearly the same, requirement for minimum gas pressure at the appliance inlet. This pressure will be about 5” W.C., which is enough for proper operation of the appliance regulator to deliver about 3.5” to the burner itself. The pressure drop in the piping is subtracted from the source delivery pressure to verify that the minimum is available at the appliance.There are other systems, however, where the required inlet pressure to the different appliances may be quite varied. In such cases, the greatest inlet pressure required must be satisfied, as well as the farthest appliance, which is almost always the critical appliance in small systems. There is an additional requirement to be observed besides the capacity of the system at 100% flow. That requirement is that at minimum flow, the pressure at the inlet to any appliance does not exceed the pressure rating of the appliance regulator. This would seldom be of concern in small systems if the source pressure is ÿ psi (14” W.C.) or less, but it should be verified for systems with greater gas pressure at the point of supply. C.3.4 Pressure Drop per 100 ̓Method. This sizing method is less conservative than the others, but it allows the designer to immediately see where the largest pressure drop occurs in the system. With this information, modifications can be made to bring the total drop to the critical appliance within the limitations that are presented to the designer.Follow the procedures described in the Longest Length Method for steps (1) through (4) and step (9).For each piping segment, calculate the pressure drop based on pipe size, length as a percentage of 100ʼ, and gas flow. Table C.3.1 shows pressure drop per 100 ̓for pipe sizes from 1/2” through 2”. The sum of pressure drops to the critical appliance is subtracted from the supply pressure to verify that sufficient pressure will be available. If not, the layout can be examined to find the high drop section(s), and sizing selections modified.

Table C.3.1Press. Drop/100ʼ(Inches) Pipe Sizes and MBH (Nat Gas) 1/2” 3/4” 1” 1-1/4” 1-1/2” 2” 0.2 31 64 121 248 372 716 0.3 38 79 148 304 455 877 0.5 50 104 195 400 600 1160 1.0 71 147 276 566 848 1640Note: Other values can be obtained by multiplying table MBH values by [Desired Drop/Table Drop] ÿ . For example, if it is desired to get flow through 3/4” pipe at 2”/100ʼ, multiply the capacity of 3/4” pipe at 1”/100 ̓by the square root of the pressure ratio: (147) (2/1) ÿ = 147(1.414) = 208 MBH

Example: Using the layout shown in Fig. C.7.1, proceed as follows:Length to A = 20ʼ, with 35MBH. Using 1/2” pipe, Pr Dr = 20ʼ/100 ̓(0.3”) = 0.06Length to B = 15ʼ, with 75MBH. Using 3/4” pipe, Pr Dr = 15ʼ/100 ̓(0.3”) = 0.045Sect. 1 = 10ʼ, with 110MBH.Here we have a choice: 1” pipe, which gives 10/100 (0.2) = 0.02 or 3/4” 10/100 (0.5+6/43[0.5]) = 0.1(0.57) = 0.06 approx.Notice that we interpolated the PrDr for 110MBH between 104 and 147 MBH.Sect. 2 = 20ʼ, with 135MBH.Here again we have a choice: 1” pipe, which gives 20/100 (0.2+1/2 [0.1]) = 0.05 or 3/4” 20/100 (1.0) = 0.5Notice that we interpolated the PrDr for 135MBH between 121 and 148 MBH, but ignored interpolation for the 3/4” pipe (trivial for 104 to 147).Sect. 3 = 30ʼ, with 245MBH.Here we have a choice: 1” pipe, which gives 30/100 (1) = 0.3 or 1-1/4” 30/100 (0.2) = 0.06Notice that we ignored interpolation for these options, since the table values are close to the 245MBH carried by that section.The total pressure drop is the sum of the section approaching A, Sect. 1, and Sect.3, or either of the following, depending on whether we need an absolute minimum or can accommodate the larger drop.Pressure drop to farthest appliance = 0.06 + 0.02 + 0.06 = 0.14, for the lesser value, or 0.06 + 0.06 + 0.3 = 0.42, for the greater valueNotice that Section 2 and the run to B do not enter into this calculation, provided that the appliances have similar input pressure requirements. Substantiation: Provide additional sizing guidance and an alternate sizing example using pressure drop per 100 feet of pipe.Committee Meeting Action: Accept Number Eligible to Vote: 30

Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT

_______________________________________________________________54-153 Log# 11 NFG-AAA Final Action: Accept(C.2.2) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: C.2.2 Low Pressure Natural Gas Tables. Capacities for gas at low pressure [0.5 psig (3.5 kPa gauge) or less] in cubic feet per hour of 0.60 specific gravity gas for different sizes and lengths are shown in Table 12.1 and Table 12.2 for iron pipe or equivalent rigid pipe, in Table12.7 through Table 12.9 for smooth wall semi-rigid tubing, and in Table 12.14 through Table 12.16 for corrugated stainless steel tubing. Table 12.1 and Table 12.7 are based upon a pressure drop of 0.3 in. w.c. (75 Pa), whereas Table 12.2, Table 12.8, and Table 12.14 are based upon a pressure drop of 0.5 in. w.c. (125 Pa). Table 12.9, Table 12.15, and Table 12.16 are special low-pressure applications based upon pressure drops greater than 0.5 in. w.c. (125 Pa). In using these tables 12.9, 12.15 or 12.16 , an allowance (in equivalent length of pipe) should be considered for any piping run with four or more fittings [see Table C.2.2]. Substantiation: Many tables are referenced in C.2.2. The proposed change would clarify that not all tables need an allowance for four or more fittings.Committee Meeting Action: Accept Committee Statement: The table numbers will be revised by other committee actions.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-154 Log# 93 NFG-AAA Final Action: Reject(C.3.1(1)) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: 3.1(1) Divide the piping system into appropriate segments consistent with the presence of tees, branch lines and main runs. For each segment, determine the gas load (assuming all appliances operate simultaneously) and its overall length. If using tables with a pressure drop greater than 0.5 in. W.C. a A n allowance (in equivalent length of pipe) as determined from Table C.2.2, shall be considered for piping segments that include four or more fittings. Substantiation: Long experience has shown that pipe sized to tables 12.1 and 12.2 is large enough. Adding a fitting allowance just makes it larger and more expensive to install.Committee Meeting Action: Reject Committee Statement: No data is provided to verify the claim made in the substantiation.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-155 Log# 92 NFG-AAA Final Action: Reject(C.3.2) ________________________________________________________________Submitter : Dale Watterson , Madison Gas and ElectricRecommendation: C.3.2 The Branch Length Method. This sizing method reduces the amount of conservatism built into the traditional Longest Length Method. The longest length as measured from the meter to the furthest remote appliance is only used to size the initial parts of the overall piping system. The Branch Length Method is applied with any indoor piping material used in the tables in the following manner: Substantiation: Since the C.7.3 example #3 uses semi-rigid copper tubing the proposed revision reinforces to the code user that the B.L.M. can be used with any piping material in the tables. Committee Meeting Action: Reject Committee Statement: No technical substantiation is provided for the proposal.Number Eligible to Vote: 30Ballot Results: Affirmative: 25 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERT _______________________________________________________________54-156 Log# 72 NFG-AAA Final Action: Accept(E D.3(2)(b) (New)) ________________________________________________________________Submitter : William H. Bruno , Brunoʼs consultant Enterprises LLCRecommendation: D.3 Testing for Leakage not Using a Meter. This can be done by one of the following methods:(2) (b) By inserting a 30 pound pressure gauge on the down stream side of the first stage regulator, admitting full line pressure to the system and then closing the container valve. Enough pressure should be released from the system to lower the pressure gauge reading by 5 psi (34.5kPa). The system should be allowed to stand for 3 minutes without showing an increase or a decrease in pressure gauge reading. Substantiation: Currently the codes only show two methods in which to leak check an LP Gas. The above method is a recognized method of leak testing a system. However, it is not taught because it is not in the NFPA 54. By

54-103

Report on Proposals — Copyright, NFPA NFPA 54 adding the above method, it would give LP Gas dealer another method of leak checking LPG system. This method eliminates the need to disturber the pigtail or discharge gas into a resident.Committee Meeting Action: Accept Number Eligible to Vote: 30Ballot Results: Affirmative: 23 Negative: 2 Ballot Not Returned: 5 BRUNO, BUCHAL, CAVE, DOUCETTE, GILBERTExplanation of Negative: KOBEL: The method described could permit a higher initial pressure on the piping system than some of the components are designed to handle.RIBBS: The method as described appears to allow a higher initial pressure on the piping system than some of the components are designed to sustain, higher than normal operating pressures and system design.

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1

Draft Note: The official actions of the Committee are found in theproposals. This draft is for the convenience of the reviewer and isnot official.

How to Use The Draft: The following draft shows those parts of theCode affected by accepted proposals, with most revisions shown asadditions (underlined) and deletions (strikethrough).

Each revision is identified by its ROP sequence number inbrackets (for example, [ROP 54/Z223.1–1], [ROP 54/Z223.1–2],etc.) A ROP sequence number has been assigned to each proposallog number (see the ROP report for assignments). Please refer tothe ROP sequence number in any comment you are submitting.

The ROP sequence number is typically placed at the end ofeach revised section(s) or specific revision. Where a section is re-vised by more than one proposal, the sequence numbers aregrouped together at the end of the revised section(s).

The draft also identifies those sections that have not been re-vised. These sections, subparts, Figures and Tables are listed inbrackets (for example [3.9 through 3.13.5 unchanged]).

ANSI Z223.1 NFPA 54National Fuel Gas Code

2002 Edition

Chapter 1 Administrative

1.1 Scope.

1.1.1 Applicability.

1.1.1.1 This code is a safety code that shall apply to the installationof fuel gas piping systems, appliances, fuel gas utilization equip-ment, and related accessories as shown in 1.1.1.1(A) through1.1.1.1(D):

(A) Coverage of piping systems shall extend from the point ofdelivery to the appliance connections with each gas utili-zation device.

[(B) through (C) unchanged]

(D) Requirements for appliances, gas utilization equipmentand related accessories shall include installation, combus-tion, and ventilation air and venting. [ROP 54/Z223.1–2]

1.1.1.2 This code shall not apply to the following (referencestandards for some of which appear in Annex L):

(1) Portable LP-Gas appliances and equipment of all typesthat are not connected to a fixed fuel piping system.

(2) Installation of farm appliances and equipment such asbrooders, dehydrators, dryers, and irrigation equipment.[ROP 54/Z223.1–2]

[(3) through (19) unchanged]

(20) Construction of appliances. [ROP 54/Z223.1–3]

[1.1.2 through 1.5 unchanged]

Chapter 2 Reference Standards

[unchanged]

Chapter 3 Definitions

[3.1 through 3.3.4 unchanged]

3.3.5 Air Conditioner, Gas-Fired. An gas-burning, automaticallyoperated appliance for supplying cooled and/or dehumidified air orchilled liquid. [ROP 54/Z223.1–2]

[3.3.6 through 3.3.15 unchanged]

3.3.16 Atmospheric Pressure. The pressure of the weight of airand water vapor on the surface of the earth, approximately 14.7pounds/square inch (psia) (101 kPa absolute) at sea level. [ROP54/Z223.1–9]

3.3.17* Authority Having Jurisdiction (AHJ). The organization,office or individual responsible for approving appliances, equip-ment, materials, an installation, or a procedure. [ROP54/Z223.1–2]

[3.3.18 through 3.3.24 unchanged]

3.3.25 Boiler, Hot Water Heating Boiler. A boiler in which nosteam is generated, from which hot water is circulated for heatingpurposes and then returned to the boiler, and that operates at waterpressures not exceeding 160 psi (1100 kPa) and at water tempera-tures not exceeding 250°F (121°C) at or near the boiler outlet de-signed to heat water for circulation through an external space heat-ing system. [ROP 54/Z223.1–11], [ROP 54/Z223.1–10]

3.3.26 Boiler, Hot Water Supply. A boiler, completely filled withwater, which furnishes hot water to be used externally to itself, andthat operates at water pressures not exceeding 160 psi (1100 kPa)and at water temperatures not exceeding 250°F (121°C) at or nearthe boiler outlet used to heat water for purposes other than spaceheating. [ROP 54/Z223.1–11]

3.3.27 Boiler, Low-Pressure Steam. A self-contained gas-burningappliance for supplying steam or hot water A boiler designed toconvert water into steam which is supplied to an external system.[ROP 54/Z223.1–11], [ROP 54/Z223.1–12]

3.3.28 Boiler, Steam Heating Low-Pressure. A boiler in whichsteam is generated and that operates at a steam pressure not ex-ceeding 15 psi (100 kPa). A boiler that supplies steam at a pressurenot exceeding 15 psi (100 kPa), or hot water at a pressure not ex-ceeding 160 psi (1100 kPa) at a temperature not exceeding 250oF(121oC). [ROP 54/Z223.1–11], [ROP 54/Z223.1–13]

[3.3.29 through 3.3.38 unchanged]

3.3.39 Chimney. [See also Gas Vent, Vent, and Venting System.]One or more passageways, vertical or nearly so, for conveying flueor vent gases to the outside atmosphere outdoors. [ROP54/Z223.1–14]

3.3.40 Chimney, Factory-Built. A chimney composed of listedfactory-built components assembled in accordance with the termsof listing manufacturer’s installation instructions to form the com-pleted chimney. [ROP 54/Z223.1–64a]

[3.3.41 through 3.3.42 unchanged]

3.3.43 Clothes Dryer. An device appliance used to dry wet laundryby means of heat derived from the combustion of fuel gases. [ROP54/Z223.1–2]

3.3.44 Clothes Dryer, Type 1. Factory-built package, multipleproduced. Primarily used in family living environment. May ormay not be coin-operated for public use. [ROP 54/Z223.1–15]

3.3.45 Clothes Dryer, Type 2. Factory-built package, multipleproduced. Used in business with direct intercourse of the function

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with the public. May or may not be operated by public or hired at-tendant. May or may not be coin-operated. [ROP 54/Z223.1–15]

[3.3.46 through 3.3.55 unchanged]

3.3.56 Controls. Devices designed to regulate the gas, air, water, orelectrical supply to an gas appliance. These may be manual orautomatic. [ROP 54/Z223.1–2]

[3.3.57 through 3.3.65 unchanged]

3.3.66 Direct Gas-Fired Industrial Air Heater, Recirculating.An air recirculating heater in which all of the products of combus-tion generated by the gas-burning device appliance are released intothe air stream being heated; whose purpose is to offset the buildingheat loss by heating incoming outside air, inside air or a combina-tion of both. [ROP 54/Z223.1–2], [ROP 54/Z223.1–16]

3.3.67 Direct Gas-Fired Non-Recirculating Industrial Make-UpAir Heater. A non-recirculating industrial air heater in which allthe products of combustion generated by the fuel-gas burning de-vice appliance are released into the outside air stream being heated.[ROP 54/Z223.1–2], [ROP 54/Z223.1–17]

3.3.68 Direct Vent Appliances. Appliances that are constructedand installed so that all air for combustion is derived directly fromthe outside atmosphere outdoors and all flue gases are dischargedto the outside atmosphere outdoors. [ROP 54/Z223.1–14]

[3.3.69 unchanged]

3.3.70 Draft. A pressure difference that causes gases or air to flowthrough a chimney, vent, flue, or fuel burning equipment appliance.[ROP 54/Z223.1–2]

[3.3.71 through 3.3.77 unchanged]

3.3.78 Effective Ground-Fault Current Path. An intentionallyconstructed, permanent, low impedance electrically conductivepath designed and intended to carry underground electric fault cur-rent conditions from the point of a ground fault on a wiring systemto the electrical supply source. [ROP 54/Z223.1–20]

3.3.79 Equipment. See Appliance Devices other than appliances.[ROP 54/Z223.1–2]

[3.3.80 through 3.3.92 unchanged]

3.3.92 Flue, Chimney. The passage(s) in a chimney for conveyingthe flue or vent gases to the outside atmosphere outdoors. [ROP54/Z223.1–14]

[3.3.93 through 3.3.94 unchanged]

3.3.95 Food Service Equipment Appliance, Gas Counter Appli-ance. An appliance such as a gas coffee brewer and coffee urn andany appurtenant water heating equipment appliance, food and dishwarmer, hot plate, and griddle. [ROP 54/Z223.1–2]

3.3.96 Food Service Equipment Appliance, Gas Deep Fat Fryer.An appliance, including a cooking vessel in which oils or fats areplaced to such a depth that the cooking food is essentially sup-ported by displacement of the cooking fluid or a perforated con-tainer immersed in the cooking fluid rather than by the bottom ofthe vessel, designed primarily for use in hotels, restaurants, clubs,and similar institutions. [ROP 54/Z223.1–2]

3.3.97 Food Service Equipment Appliance, Gas-Fired Kettle.An appliance with a cooking chamber that is heated either by asteam jacket in which steam is generated by gas heat or by directgas heat applied to the cooking chamber. [ROP 54/Z223.1–2]

3.3.98 Food Service Equipment Appliance, Gas Oven, Bakingand Roasting. An oven primarily intended for volume food prepa-ration that may be composed of one or more sections or units of thefollowing types: (1) cabinet oven, an oven having one or morecavities heated by a single burner or group of burners; (2) reel-typeoven, an oven employing trays that are moved by mechanicalmeans; (3) sectional oven, an oven composed of one or more inde-pendently heated cavities. [ROP 54/Z223.1–2]

3.3.99 Food Service Equipment Appliance, Gas Range. A self-contained gas range providing for cooking, roasting, baking, orbroiling, or any combination of these functions, and not designedspecifically for domestic use. [ROP 54/Z223.1–2]

3.3.100 Food Service Equipment Appliance, Gas Steam Cooker.An gas appliance that cooks, defrosts, or reconstitutes food by di-rect contact with steam. [ROP 54/Z223.1–2]

3.3.101 Food Service Equipment Appliance, Gas Steam Gen-erator. A separate appliance primarily intended to supply steam foruse with food service equipment appliances. [ROP 54/Z223.1–2]

3.3.102 Furnace, Central. A self-contained, gas-burning appliancefor heating air by transfer of heat of combustion through metal tothe air, and designed to supply heated air through ducts to spacesremote from or adjacent to the appliance location. [ROP54/Z223.1–2]

3.3.103 Furnace, Enclosed. A specific heating, or heating andventilating, furnace incorporating an integral total enclosure andusing only outside outdoor air for combustion. [ROP54/Z223.1–14]

[3.3.104 through 3.3.110 unchanged]

3.3.111 Gas Utilization Equipment. Any device that utilizes gasas a fuel or raw material or both. [ROP 54/Z223.1–2]

3.3.112 Gas Vent. A passageway composed of listed factory-builtcomponents assembled in accordance with the terms of listingmanufacturer’s installation instructions for conveying vent gasesfrom gas appliances or their vent connectors to the outside atmos-phere outdoors. [ROP 54/Z223.1–2], [ROP 54/Z223.1–14], [ROP54/Z223.1–64a]

3.3.113 Gas Vent, Special Type. Gas vents for venting listedCategory II, III, and IV gas appliances. [ROP 54/Z223.1–2]

3.3.114 Gas Vent, Type B. A vent for venting listed gas applianceswith draft hoods and other Category I gas appliances listed for usewith Type B gas vents. [ROP 54/Z223.1–2],

3.3.115 Gas Vent, Type B-W. A vent for venting listed gas-firedvented wall furnaces. [ROP 54/Z223.1–2]

[3.3.116 through 3.3.119 unchanged]

3.3.120 Heat Pump, Gas-Fired. An gas-burning, automaticallyoperated appliance utilizing a refrigeration system for supplyingeither heated air or liquid, or heated and/or cooled air or liquid.[ROP 54/Z223.1–2]

[3.3.121 through 3.3.125 unchanged]

3.3.126 Household Cooking Gas Appliance. An gas appliance fordomestic food preparation, providing at least one function of (1)top or surface cooking, (2) oven cooking, or (3) broiling. [ROP54/Z223.1–2]

3.3.127 Household Cooking Gas Appliance, Built-In Unit. Aunit designed to be recessed into, placed upon, or attached to the

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construction of a building, but not for installation on the floor.[ROP 54/Z223.1–2]

3.3.128 Household Cooking Gas Appliance, Broiler. A unit thatcooks primarily by radiated heat. [ROP 54/Z223.1–2]

[3.3.129 unchanged]

3.3.130 Industrial Air Heaters, Direct Gas-Fired Non-Recirculating. A heater in which all the products of combustiongenerated by the gas-burning device are released into the air streambeing heated to compensate for building heat loss by heating onlyincoming outdoor air. [ROP 54/Z223.1–26]

3.3.131 Industrial Air Heaters, Direct Gas-Fired Recirculating.A heater in which all the products of combustion generated by thegas-burning device are released into the air stream being heated tocompensate for building heat loss by heating incoming outdoor air,and, if applicable, inside air. [ROP 54/Z223.1–26], [ROP54/Z223.1–27]

[3.3.132 through 3.3.133 unchanged]

3.3.134 Joint. A connection between two lengths of pipe or be-tween a length of pipe and a fitting. [ROP 54/Z223.1–28]

3.3.135 Kettle, Gas-Fired. See Food Service Equipment, Gas-Fired Kettle. [ROP 54/Z223.1–2]

3.3.136 Labeled. Appliances, Eequipment, piping, accessories, ormaterials or vent components to which has been attached a label,symbol or other identifying mark of an organization that is accept-able to the authority having jurisdiction and concerned with productevaluation, that maintains periodic inspection of production of la-beled appliances, equipment, piping, accessories, or materials orvent components, and by whose labeling the manufacturer indicatescompliance with appropriate standards or performance in a speci-fied manner. [ROP 54/Z223.1–2]

[3.3.137 unchanged]

3.3.138 Leak Check. An operation performed on a complete gaspiping system and connected appliances and equipment to verifythat the system does not leak. [ROP 54/Z223.1–2]

[3.3.139 unchanged]

3.3.140* Listed. Appliances, eEquipment, piping, accessories,materials, vent components or services included in a list publishedby an organization acceptable to the authority having jurisdictionand concerned with evaluation of products or services, that main-tains periodic inspection of production of listed appliances, equip-ment, piping, accessories or materials, vent components or periodicevaluation of services, and whose listing states either that the appli-ances, equipment, piping, accessories, material, vent components orservice meets appropriate designated standards or has been testedand found suitable for a specified manner. [ROP 54/Z223.1–2]

[3.3.141 through 3.3.144 unchanged]

3.3.145 Mechanical Exhaust System. Equipment installed in andmade a part of the vent, which will provide a positive induced draftto provide the required flow of gases through the vent. [ROP54/Z223.1–29]

[3.3.146 through 3.3.151 unchanged]

3.3.152 Nondisplaceable Valve Member. A nondisplaceable valvemember that cannot be moved from its seat by a force applied tothe handle, or force applied by a plane surface to any exterior por-tion of the valve. [ROP 54/Z223.1–30]

[3.3.153 through 3.3.156 unchanged]

3.3.157 Outdoor Cooking Gas Appliance. As used in this code, apost-mounted, fuel-gas burning outdoor cooking appliance for in-stallation directly on and attachment to a post provided as a part ofthe appliance by the manufacturer. A gas-fired cooking appliancefor outdoor use only that is provided with a means of support by themanufacturer and is connected to a fixed gas piping system. [ROP54/Z223.1–32]

3.3.158 Oven, Gas Baking and Roasting. See Food ServiceEquipment Appliance, Gas Oven. [ROP 54/Z223.1–2]

[3.3.159 through 3.3.164 unchanged]

3.3.165 Piping. As used in this code, either pipe, tubing, or both.

see 3.3.163 Pipe, 3.3.205 Tubing. [ROP 54/Z223.1–33]

[3.3.166 through 3.3.174 unchanged]

3.3.175 Qualified Agency. Any individual, firm, corporation, orcompany that either in person or through a representative is en-gaged in and is responsible for (a) the installation, testing, or re-placement of gas piping or (b) the connection, installation, testing,repair, or servicing of appliances and equipment; that is experi-enced in such work; that is familiar with all precautions required,and that has complied with all the requirements of the authorityhaving jurisdiction. [ROP 54/Z223.1–2]

[3.3.176 through 3.3.177 unchanged]

3.3.178 Refrigerator (Using Gas Fuel). An fuel-gas-burning ap-pliance that is designed to extract heat from a suitable chamber.[ROP 54/Z223.1–2]

3.3.179 Regulator, Gas Appliance. A pressure regulator for con-trolling pressure to the appliance manifold of gas equipment. [ROP54/Z223.1–2]

3.3.180 Regulator, Line Gas. A pressure regulator placed in a gasline between the service regulator and the gas appliance regulator.[ROP 54/Z223.1–2]

[3.3.181 unchanged]

3.3.182 Regulator, Pressure. A device Equipment placed in a gasline for reducing, controlling, and maintaining the pressure in thatportion of the piping system downstream of the device equipment.[ROP 54/Z223.1–2]

[3.3.183 through 3.3.187 unchanged]

3.3.188 Room Large in Comparison with Size of EquipmentAppliance. Rooms having a volume equal to at least 12 times thetotal volume of a furnace or air-conditioning appliance and at least16 times the total volume of a boiler. [ROP 54/Z223.1–2]

[3.3.189 through 3.3.195 unchanged]

3.3.196 Sources of Ignition. Devices or Appliances or equipmentthat, because of their intended modes of use or operation, are capa-ble of providing sufficient thermal energy to ignite flammable gas-air mixtures. [ROP 54/Z223.1–2]

[3.3.197 through 3.3.204 unchanged]

3.3.205 Tubing. Semirigid conduit of copper, steel, aluminum,CSST or plastic. [ROP 54/Z223.1–36]

[3.3.206 through 3.3.209 unchanged]

3.3.210 Unit Heater, High-Static Pressure. A self-contained,automatically controlled, vented, fuel-gas-burning appliance having

NFPA 54/Z223.1 – A05 ROP

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integral means for circulation of air against 0.2 in. (15 mm H2O) orgreater static pressure. [ROP 54/Z223.1–2]

[3.3.211 through 3.3.214 unchanged]

3.3.215 Valve, Equipment Appliance Shutoff. A valve located inthe piping system, used to shut off individual equipment. [ROP54/Z223.1–2]

[3.3.216 through 3.3.222 unchanged]

3.3.223 Vent. A passageway used to convey flue gases from gasutilization equipment appliances or their vent connectors to the out-side atmosphere outdoors. [ROP 54/Z223.1–2], [ROP54/Z223.1–14]

[3.3.224 unchanged]

3.3.225 Vent Damper Device, Automatic. A device that is in-tended for installation in the venting system, in the outlet of ordownstream of the appliance draft hood, of an individual automati-cally operated fuel-gas-burning appliance and that is designed toautomatically open the venting system when the appliance is in op-eration and to automatically close off the venting system when theappliance is in a standby or shutdown condition. [ROP54/Z223.1–2]

[3.3.226 through 3.3.228 unchanged]

3.3.229 Vent Gases. Products of combustion from fuel-gas-burningappliances plus excess air, plus dilution air in the venting systemabove the draft hood or draft regulator. [ROP 54/Z223.1–2]

[3.3.230 through 3.3.235 unchanged]

3.3.236* Venting System. A continuous open passageway from theflue collar or draft hood of an gas-burning appliance to the outsideatmosphere outdoors for the purpose of removing flue or ventgases. [ROP 54/Z223.1–2], [ROP 54/Z223.1–14]

[3.3.237 unchanged]

3.3.238 Venting System, Mechanical Draft, Forced. A ventingsystem in which a fan or other mechanical device issued is used tocause the flow of flue or vent gases under positive static vent pres-sure. [ROP 54/Z223.1–37]

[3.3.239 through 3.3.242 unchanged]

Chapter 4. General

4.1 Qualified Agency. Installation, testing, and replacement of gaspiping, gas utilization equipment appliances, or accessories, andrepair and servicing of equipment, shall be performed only by aqualified agency. [ROP 54/Z223.1–1]

[4.2 through 4.3.2.2 unchanged]

Chapter 5. Gas Piping System Design, Materials, and Compo-nents

[5.1 through 5.1.1 unchanged]

5.1.2 Addition to Existing System. When additional gas utilizationequipment is appliances are being connected to a gas piping sys-tem, the existing piping shall be checked to determine if it has ade-quate capacity [see 5.4.3]. If inadequate, the existing system shallbe enlarged as required, or separate gas piping of adequate capacityshall be provided. [ROP 54/Z223.1–40]

[5.2 through 5.3.1 unchanged]

5.3.2 Interconnections for Stand-By Fuels. Where a supplemen-tary gas for stand-by use is connected downstream from a meter ora service regulator where a meter is not provided, a device equip-ment to prevent backflow shall be installed. A three-way valve in-stalled to admit the standby supply and at the same time shut off theregular supply shall be permitted to be used for this purpose. [ROP54/Z223.1–40]

5.4 Sizing of Gas Piping Systems.

5.4.1* General Considerations. Gas piping systems shall be ofsuch size and so installed as to provide a supply of gas sufficientto meet the maximum demand without undue loss of pressurebetween the point of delivery and the gas utilization equipmentappliance. [ROP 54/Z223.1–40]

5.4.2* Maximum Gas Demand.

5.4.2.1 The volume of gas to be provided (in cubic feet per hour)shall be determined directly from the manufacturers’ input rat-ings of the gas utilization equipment appliances served. Wherethe input rating is not indicated, the gas supplier, equipment ap-pliance manufacturer, or a qualified agency shall be contacted, orthe rating from Table 5.4.2.1 shall be used for estimating thevolume of gas to be supplied. [ROP 54/Z223.1–40]

[Table 5.4.2.1 unchanged]

5.4.2.2 The total connected hourly load shall be used as the basisfor piping sizing, assuming all equipment is appliances are oper-ating at full capacity simultaneously.

Exception. Sizing shall be permitted to be based upon estab-lished load diversity factors. [ROP 54/Z223.1–40]

[5.4.3 unchanged]

5.4.4 Allowable Pressure Drop. The design pressure loss in anypiping system under maximum probable flow conditions, fromthe point of delivery to the inlet connection of the gas utilizationequipment appliance, shall be such that the supply pressure at theequipment appliance is greater than the minimum pressure re-quired for proper equipment appliance operation. [ROP54/Z223.1–40]

[5.5 through 5.5.1 (3) (c) unchanged]

(d) Boiler or mechanical equipment rooms. [ROP54/Z223.1–40]

[5.5.1 (4) through 5.6.3.3 unchanged]

5.6.3.4 Corrugated Stainless Steel. Corrugated stainless steeltubing shall be tested and listed in compliance accordance withthe construction, installation, and performance requirements ofANSI LC 1/CSA 6.26, Fuel Gas Piping Systems Using Corru-gated Stainless Steel Tubing. [ROP 54/Z223.1–42]

5.6.4 Plastic Pipe, Tubing, and Fittings. Plastic pipe, tubing,and fittings used to supply fuel gas shall be used outside out-doors underground only and shall conform with to ASTM D2513, Standard Specification for Thermoplastic Gas PressurePipe, Tubing, and Fittings. Pipe to be used shall be marked“gas” and “ASTM D 2513.” [ROP 54/Z223.1–14], [ROP54/Z223.1–43]

[5.6.4.1 through 5.6.4.1 (1) unchanged]

(2) Service head adapters and field-assembled anodeless risersincorporating service head adapters shall be recommendedby the manufacturer for the gas used by the manufacturer

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and shall be design-certified to meet the requirements ofCategory I of ASTM D 2513, Standard Specification forThermoplastic Gas Pressure Pipe, Tubing, and Fittings, and49 CFR 192.281(e). The manufacturer shall provide the userqualified installation instructions as prescribed by 49 CFR192.283(b). [ROP 54/Z223.1–44]

[(3) unchanged]

5.6.4.2 Regulator Vent Piping. Plastic pipe, tubing, and fittingsused to connect regulator vents to remote vent terminations shallbe PVC conforming to UL 651, Schedule 40 and Schedule 80rigid PVC conduit. [ROP 54/Z223.1–43]

[5.6.5 through 5.6.9 (2) unchanged]

(3) Where compression-type mechanical joints are used, thegasket material in the fitting shall be compatible with theplastic piping and with the gas distributed by the system. Aninternal tubular rigid stiffener shall be used in conjunctionwith the fitting. The stiffener shall be flush with the end ofthe pipe or tubing and shall extend at least to the outsideend of the pipe or tubing and shall extend at least to the out-side end of the compression fitting when installed. Thestiffener shall be free of rough or sharp edges and shall notbe a force fit in the plastic. Split tubular stiffeners shall notbe used. [ROP 54/Z223.1–48]

[(4) unchanged]

[Table 5.6.7.3 unchanged]

[5.6.10 through 5.8 unchanged]

5.8.1 Where Required. A line gas pressure regulator or gasequipment pressure regulator, as applicable, shall be installedwhere the gas supply pressure is higher than that at which thebranch supply line or gas utilization equipment is appliances aredesigned to operate or varies beyond design pressure limits. [ROP54/Z223.1–40]

[5.8.2 through 5.8.5.1 unchanged]

5.8.5.1.1 An independent vent to the outside exterior of thebuilding, sized in accordance with the regulator manufac-turer’s instructions, shall be provided where the location of aregulator is such that a ruptured diaphragm will cause a haz-ard. Where there is more than one regulator at a location, eachregulator shall have a separate vent to the outside outdoors, orif approved by the authority having jurisdiction, the vent linesshall be permitted to be manifolded in accordance with ac-cepted engineering practices to minimize back pressure in theevent of diaphragm failure. [See 5.9.7 for information onproperly locating the vent.] Materials for vent piping shall bein accordance with Section 5.6. [ROP 54/Z223.1–14]

[5.8.5.1.1 Exception through 5.8.5.1.3 unchanged]

5.8.5.1.4 A regulator shall not be vented to the gas equipmentappliance flue or exhaust system. [ROP 54/Z223.1–40]

5.8.5.2 Gas Appliance Pressure Regulators. For venting of gasappliance pressure regulators, see 8.1.19. [ROP 54/Z223.1–40]

[5.8.6 through 5.9.1 unchanged]

5.9.1.1 The requirements of this section shall be met and a pipingsystem deemed to have overpressure protection where the fol-lowing are included in the piping system two devices (a serviceor line pressure regulator plus one other device) are installedsuch that:

(1) Two devices (a service or line pressure regulator plus oneother device) are installed.

(2 1)Each device shall limits the pressure to a value that does notexceed the maximum working pressure of the downstreamsystem.

(3 2)The individual failure of both either devices occurs simulta-neously in order to shall not result in overpressure of thedownstream system. [ROP 54/Z223.1–50]

[5.9.1.2 through 5.9.6 (2) unchanged]

5.9.7 Vents. The discharge stacks, vents, or outlet parts of all pres-sure relieving and pressure limiting devices shall be located so thatgas is safely discharged into the outside atmosphere outdoors. Dis-charge stacks or vents shall be designed to prevent the entry ofwater, insects, or other foreign material that could cause blockage.The discharge stack or vent line shall be at least the same size asthe outlet of the pressure relieving device. [ROP 54/Z223.1–14]

[5.9.8 through 5.10 unchanged]

5.10.1 Where to Install. Protective devices shall be installed asclose to the utilization equipment as practical where the designof utilization equipment connected is such that air, oxygen, orstandby gases could be forced into the gas supply system. Gasand air combustion mixers incorporating double diaphragm“zero” or “atmosphere” governors or regulators shall require nofurther protection unless connected directly to compressed air oroxygen at pressures of 5 psi (34 kPa) or more. [ROP54/Z223.1–40]

[5.10.2 through 5.10.2 (4) unchanged]

5.11 Low-Pressure Protection. A protective device shall beinstalled between the meter and the gas utilization equipmentappliance if the operation of the equipment appliance is such (i.e.,gas compressors) that it could produce a vacuum or a dangerousreduction in gas pressure at the meter. Such devices include, but arenot limited to, mechanical, diaphragm-operated, or electricallyoperated low-pressure shutoff valves. [ROP 54/Z223.1–40]

[5.12 through 5.13 unchanged]

5.13.1 Design. Piping systems shall be designed to have sufficientflexibility to prevent thermal expansion or contraction from causingexcessive stresses in the piping material, excessive bending orloads at joints, or undesirable forces or moments at points of con-nections to appliance and equipment and at anchorage or guidepoints. Formal calculations or model tests shall be required onlywhere reasonable doubt exists as to the adequate flexibility of thesystem. [ROP 54/Z223.1–40]

[5.13.1.1 through 5.13.2 unchanged]

Chapter 6 Gas Piping Installation

[6.1 through 6.1.2 unchanged]

6.1.2.1 Cover Requirements. Underground piping systems shallbe installed with a minimum of 18 in. (460 mm) 12 in. (300 mm)of cover. Where external damage to the pipe is not likely to re-sult, the minimum cover shall be 12 in. (300 mm). The mini-mum cover shall be increased to 18 in. (600 mm) if externaldamage to the pipe or tubing from external forces is likely to re-sult. Where a minimum of 12 in. (300 mm) of cover cannot be

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provided, the pipe shall be installed in conduit or bridged(shielded). [ROP 54/Z223.1–51]

[6.1.2.2 through 6.1.5 unchanged]

6.1.6 Piping Underground Beneath Buildings. Where theinstallation of gas piping underground beneath buildings isunavoidable, the piping shall be encased in an approved conduitdesigned to withstand the superimposed loads and installed inaccordance with 6.1.6.1 or 6.1.6.2.

6.1.6.1 Conduit with One End Terminating Outdoors.Theconduit shall extend into an normally usable and accessibleportion of the building and, at the point where the conduitterminates in the building, the space between the conduit and thegas piping shall be sealed to prevent the possible entrance of anygas leakage. Where the end sealing is of a type that will retainthe full pressure of the pipe, the conduit shall be designed for thesame pressure as the pipe. The conduit shall extend at least 4 in.(100 mm) outside the building, be vented outdoors above gradeto the outside, and be installed so as to prevent the entrance ofwater and insects.

6.1.6.2 Conduit with Both Ends Terminating Indoors. Wherethe conduit originates and terminates within the same building,the conduit shall originate and terminate in an accessible portionof the building and shall not be sealed. [ROP 54/Z223.1–14],[ROP 54/Z223.1–52]

6.1.7 Plastic Pipe.

6.1.7.1 Connection of Plastic Piping. Plastic pipe shall be in-stalled outside outdoors, underground only. [ROP54/Z223.1–14]

[6.1.7.1 Exception No. 1 and No. 2 unchanged]

6.1.7.2 Connections between Metallic and Plastic Pipe. Con-nections made outside outdoor and underground between metal-lic and plastic piping shall be made only with fittings conformingto either:

(1) ASTM D 2513, Standard Specification for ThermoplasticGas Pressure Pipe, Tubing, and Fittings, Category I transi-tion fittings.

(2) ASTM F1973, Standard Specification for Factory Assem-bled Anodeless Risers and Transition Fittings in Polyethyl-ene (PE) and Polyamide 11 (PA11) Fuel Gas DistributionSystems. [ROP 54/Z223.1–14], [ROP 54/Z223.1–53]

[6.1.7.3 through 6.2 unchanged]

6.2.1 Piping installed aboveground shall be securely supported andlocated where it will be protected from physical damage (also see6.1.4). Where passing through an outside exterior wall, the pipingshall also be protected against corrosion by coating or wrappingwith an inert material approved for such applications. Where pipingis encased in a protective pipe sleeve, the annular space betweenthe gas piping and the sleeve shall be sealed at the wall to preventthe entry of water, insects, or rodents. [ROP 54/Z223.1–14]

[6.2.2 through 6.2.6 unchanged]

6.2.6.1 Piping shall be supported with pipe hooks, metal pipestraps, bands, brackets, or hangers suitable for the size of piping,of adequate strength and quality, and located at intervals so as toprevent or damp out excessive vibration. Piping shall be an-chored to prevent undue strains on connected appliances andequipment and shall not be supported by other piping. Pipe

hangers and supports shall conform to the requirements ofANSI/MSS SP-58, Pipe Hangers and Supports — Materials,Design and Manufacture. [ROP 54/Z223.1–40]

[6.2.6.2 unchanged]

[Table 6.2.6.2 unchanged]

6.2.6.3 Piping on Roof Tops. Gas piping installed on the roof sur-faces shall be elevated above the roof surface and shall be sup-ported in accordance with Table 6.2.6.2. [ROP 54/Z223.1–55]

6.2.6.3 Supports, hangers, and anchors shall be installed so as notto interfere with the free expansion and contraction of the pipingbetween anchors. All parts of the supporting equipment systemshall be designed and installed so they will not be disengaged bymovement of the supported piping. [ROP 54/Z223.1–40]

[6.2.7 unchanged]

6.2.8 CSST. CSST piping systems shall be installed in accordancewith this code and the manufacturer’s installation instructions.[ROP 54/Z223.1–42]

[6.3 through 6.5 unchanged]

6.5.1 Metallic Pipe. Metallic pipe bends shall comply with thefollowing:

(1) Bends shall be made only with bending equipment tools andprocedures intended for that purpose. [ROP 54/Z223.1–40]

[(2) through (5) unchanged]

6.5.2 Plastic Pipe. Plastic pipe bends shall comply with the fol-lowing:

[(1) through (3) unchanged]

(4) Where the piping manufacturer specifies the use of specialbending equipment tools or procedures, such equipment toolsor procedures shall be used. [ROP 54/Z223.1–40]

6.5.3* Mitered Bends. Mitered bends shall be permitted subject tothe following limitations:

(1) Miters shall not be used in systems having a design pressuregreater than 50 psi (340 kPa). Deflections caused by mis-alignments up to 3 degrees shall not be considered as miters.

(2) The total deflection angle at each miter shall not exceed 90degrees. [ROP 54/Z223.1–56]

[6.5.4 through 6.7.2 unchanged]

6.7.2.1 Each outlet, including a valve shall be closed gastightwith a threaded plug or cap immediately after installation andshall be left closed until the gas utilization appliance or equip-ment is connected thereto. When appliance or equipment is dis-connected from an outlet and the outlet is not to be used againimmediately, it shall be closed capped or plugged gastight.

Exception No. 1: Laboratory equipment appliances installed inaccordance with 8.5.2(1) shall be permitted.

Exception No. 2: The use of a listed quick-disconnect device withintegral shutoff or listed gas convenience outlet shall be permit-ted. [ROP 54/Z223.1–40], [ROP 54/Z223.1–57]

6.7.2.2 Equipment Appliance shutoff valves installed in fire-places shall be removed, and the piping capped gastight, wherethe fireplace is used for solid fuel burning. [ROP 54/Z223.1–40]

[6.8 through 6.9.2.1 unchanged]

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6.9.2.2 Shutoff Valves for Multiple House Lines. In multipletenant buildings supplied through a master meter, or through oneservice regulator where a meter is not provided, or where metersor service regulators are not readily accessible from the appli-ance or equipment location, an individual shutoff valve for eachapartment or tenant line shall be provided at a convenient pointof general accessibility. In a common system serving a numberof individual buildings, shutoff valves shall be installed at eachbuilding. [ROP 54/Z223.1–40]

6.9.3 6.9.2.3 Emergency Shutoff Valves. An exterior shutoffvalve to permit turning off the gas supply to each building in anemergency shall be provided. The emergency shutoff valvesshall be plainly marked as such and their locations posted as re-quired by the authority having jurisdiction. [ROP 54/Z223.1–58]

[6.10 through 6.13 unchanged]

6.13.1 Each aboveground portion of a gas piping system that islikely to become energized shall be electrically continuous andbonded to an effective ground-fault current path. Gas piping shallbe considered to be bonded when it is connected to gas utilizationequipment appliances that is are connected to the equipment appli-ance grounding conductor of the circuit supplying that equipmentappliance. [ROP 54/Z223.1–40]

[6.13.2 through 6.15.2 unchanged]

Chapter 7 Inspection, Testing, and Purging

[7.1 through 7.1.1.3 unchanged]

7.1.1.4 Where new branches are installed from the point of de-livery to new appliance(s), only the newly installed branch(es)shall be required to be pressure tested. Connections between thenew piping and the existing piping shall be tested with a noncor-rosive leak-detecting fluid or approved leak-detecting methods.[ROP 54/Z223.1–60]

[7.1.1.5 through 7.1.3.3 unchanged]

7.1.3.4 Where the piping system is connected to appliances, orequipment, or equipment components designed for operatingpressures of less than the test pressure, such appliances, orequipment, or equipment components shall be isolated from thepiping system by disconnecting them and capping the outlet(s).[ROP 54/Z223.1–40]

7.1.3.5 Where the piping system is connected to appliances, orequipment, or equipment components designed for operatingpressures equal to or greater than the test pressure, such appli-ances and or equipment shall be isolated from the piping systemby closing the individual equipment appliance shutoff valve(s).[ROP 54/Z223.1–40]

[7.1.3.6 through 7.1.4.2 unchanged]

7.1.4.3* Test Duration. Test duration shall be not less than 1/2 hrfor each 500 ft3 (14 m3) of pipe volume or fraction thereof.When testing a system having a volume less than 10 ft3 (0.28 m3)or a system in a single-family dwelling, the test duration shall bea minimum of 10 minutes. The duration of the test shall not berequired to exceed 24 hours. [ROP 54/Z223.1–150]

[7.1.5 through 7.1.5.3 unchanged]

7.2 Piping System, Appliance and Equipment Leakage Test.[ROP 54/Z223.1–40]

[7.2.1 through 7.2.3 unchanged]

7.2.4 Placing Appliances and Equipment in Operation. Gasutilization Appliances and equipment shall not be placed in opera-tion until after the piping system has been tested in accordance with7.2.3 and purged in accordance with 7.3.2. [ROP 54/Z223.1–40]

[7.3 through 7.3.3 unchanged]

7.3.4 Placing Appliances and Equipment in Operation. After thepiping system has been placed in operation, all appliances andequipment shall be purged and then placed in operation, as neces-sary. [ROP 54/Z223.1–40]

[Tables 7.3.1 and 7.3.2 unchanged]

Chapter 8 Appliance, Equipment and Accessory Installation[ROP 54/Z223.1–64]

8.1 General.

8.1.1* Appliances, Equipment and Accessories, and EquipmentTo Be Approved. Gas aAppliances, equipment and accessories,and gas utilization equipment shall be approved. Approved shallmean “acceptable to the authority having jurisdiction.” Listedappliances, accessories and equipment shall be installed inaccordance with the manufacturer’s installation instructions.Acceptance of unlisted gas utilization appliances, equipment andaccessories shall be on the basis of a sound engineering evaluation.In such cases, the appliance, equipment or accessory shall be safeand suitable for the proposed service and shall be recommended forthe service by the manufacturer. [ROP 54/Z223.1–64], [ROP54/Z223.1–64a]

8.1.2 Added or Converted Equipment Applainces. When addi-tional or replacement appliances or equipment is are installed or anappliance is converted to gas from another fuel, the location inwhich the appliance or equipment is are to be operated shall bechecked to verify the following: [ROP 54/Z223.1–64]

[(1) unchanged]

(2) The installation components and equipment appliances meetthe clearances to combustible material provisions of 8.2.2. Itshall be determined that the installation and operation of theadditional or replacement equipment appliances does not ren-der the remaining equipment appliances unsafe for continuedoperation. [ROP 54/Z223.1–64]

[(3) unchanged]

8.1.3 Type of Gas(es). It shall be determined whether the gas utili-zation equipment appliance has been designed for use with the gasto which it will be connected. No attempt shall be made to convertthe equipment appliance from the gas specified on the rating platefor use with a different gas without consulting the installation in-struction, the serving gas supplier, or the equipment appliancemanufacturer for complete instructions.

8.1.4 Safety Shutoff Devices for Unlisted LP-Gas EquipmentAppliances Used Indoors. Unlisted gas utilization equipment ap-pliances for use with undiluted liquefied petroleum gases and in-stalled indoors, except attended laboratory equipment, shall beequipped with safety shutoff devices of the complete shutoff type.[ROP 54/Z223.1–64], [ROP 54/Z223.1–65]

[8.1.5 unchanged]

8.1.6* Protection of Gas Equipment Appliances from Fumes orGases Other than Products of Combustion. [ROP54/Z223.1–64]

[8.1.6.1 unchanged]

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8.1.6.2 Non-direct-vent type gas appliances installed in beautyshops, barber shops, or other facilities where chemicals that gen-erate corrosive or flammable products such as aerosol sprays areroutinely used, shall be located in an equipment a mechanicalroom separate or partitioned off from other areas with provisionsfor combustion and dilution air from outdoors. Direct ventequipment appliances shall be installed in accordance with theappliance manufacturer’s installation instructions. [ROP54/Z223.1–64]

8.1.7 Process Air. In addition to air needed for combustion incommercial or industrial processes, process air shall be providedas required for cooling of appliances, equipment or material,controlling dew point, heating, drying, oxidation, dilution, safetyexhaust, odor control, air for compressors and for comfort andproper working conditions for personnel. [ROP 54/Z223.1–64]

8.1.8 Building Structural Members.

8.1.8.1 Structural members of a building shall not pass throughgas utilization equipment appliances having an operating tem-perature in excess of 500°F (260°C). [ROP 54/Z223.1–64]

8.1.8.2 Structural members passing through gas utilizationequipment appliances having an operating temperature of 500°F(260°C) or less shall be of noncombustible material. Buildingcolumns, girders, beams, or trusses shall not be installed withinequipment appliances, unless insulation and ventilation are pro-vided to avoid all deterioration in strength and linear expansionof the building structure in either a vertical or horizontal direc-tion. [ROP 54/Z223.1–64]

8.1.8.3 Gas utilization Appliances and equipment shall be fur-nished either with load distributing bases or with a sufficientnumber of supports to prevent damage to either the buildingstructure or appliance and equipment. [ROP 54/Z223.1–64]

8.1.8.4 At the locations selected for installation of gas utilizationappliances and equipment, the dynamic and static load-carryingcapacities of the building structure shall be checked to determineif they are adequate to carry the additional loads. The appliancesand equipment shall be supported and shall be connected to thepiping so as not to exert undue stress on the connections. [ROP54/Z223.1–64]

8.1.9 Flammable Vapors. Gas aAppliances shall not be installedin areas where the open use, handling, or dispensing of flammableliquids occurs, unless the design, operation, or installation reducesthe potential of ignition of the flammable vapors. Gas utilizationequipment Appliances installed in compliance with 8.1.10, 8.1.11,and 8.1.12 shall be considered to comply with the intent of thisprovision. [ROP 54/Z223.1–64]

8.1.10 Installation in Residential Garages.

8.1.10.1 Gas utilization equipment Appliances in residential ga-rages and in adjacent spaces that open to the garage and are notpart of the living space of a dwelling unit shall be installed sothat all burners and burner ignition devices are located not lessthan 18 in. (460 mm) above the floor unless listed as flammablevapor ignition resistant. [ROP 54/Z223.1–64]

8.1.10.2 Such equipment appliances shall be located or protectedso it is not subject to physical damage by a moving vehicle.[ROP 54/Z223.1–64]

8.1.10.3 When appliances are installed in a separate, enclosedspace having access only from outside of the garage, suchequipment appliance shall be permitted to be installed at floorlevel, providing the required combustion air is taken from theexterior of the garage. [ROP 54/Z223.1–64]

8.1.11 Installation in Commercial Garages.

8.1.11.1 Parking Structures. Gas utilization equipment Appli-ances installed in enclosed, basement, and underground parkingstructures shall be installed in accordance with NFPA 88A,Standard for Parking Structures. [ROP 54/Z223.1–64]

8.1.11.2 Repair Garages. Gas utilization equipment Appliancesinstalled in repair garages shall be installed in a detached build-ing or room, separated from repair areas by walls or partitions,floors, or floor ceiling assemblies that are constructed so as toprohibit the transmission of vapors and having a fire resistancerating of not less than 1 hr, and that have no openings in the wallseparating the repair area within 8 ft (2.4 m) of the floor. Wallpenetrations shall be firestopped. Air for combustion purposesshall be obtained from outside the outdoors building. The heatingroom shall not be used for the storage of combustible materials.[ROP 54/Z223.1–14], [ROP 54/Z223.1–64]

[Exception No. 1 unchanged]

Exception No. 2: Heating equipment appliances for vehicle re-pair areas where there is no dispensing or transferring of Class Ior Class II flammable or combustible liquids or liquefied petro-leum gas shall be installed in accordance with NFPA 30A,Automotive and Marine Service Station Code. [ROP54/Z223.1–64]

[8.1.12 unchanged]

8.1.13 Gas Equipment Appliance Physical Protection. Where itis necessary to locate gas utilization equipment appliances close toa passageway traveled by vehicles or equipment machinery, guard-rails or bumper plates shall be installed to protect the equipmentfrom damage. [ROP 54/Z223.1–64]

8.1.14 Venting of Flue Gases. Gas utilization equipmentAppliances shall be vented in accordance with the provisions ofChapter 10. [ROP 54/Z223.1–64]

8.1.15 Extra Device or Attachment. No device or attachmentshall be installed on any gas utilization equipment appliance thatcould in any way impair the combustion of gas. [ROP54/Z223.1–64]

8.1.16 Adequate Capacity of Piping. When additional gas utiliza-tion equipment is appliances are being connected to a gas pipingsystem, the existing piping shall be checked to determine if it hasadequate capacity. [See Section 5.4.] Where inadequate, the exist-ing system shall be enlarged as necessary, or separate gas piping ofadequate capacity shall be run from the point of delivery to theequipment appliance. [ROP 54/Z223.1–64]

8.1.17 Avoid Strain on Gas Piping. Gas utilization equipmentAppliances shall be supported and so connected to the piping as notto exert undue strain on the connections. [ROP 54/Z223.1–64]

8.1.18 Gas Appliance Pressure Regulators. Where the gas supplypressure is higher than that at which the gas utilization equipmentappliance is designed to operate or varies beyond the design pres-sure limits of the equipment appliance, a gas appliance pressureregulator shall be installed. [ROP 54/Z223.1–64]

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8.1.19 Venting of Gas Appliance Pressure Regulators. Ventingof gas appliance pressure regulators shall comply with thefollowing requirements:

(1) Gas aAppliance pressure regulators requiring access to theatmosphere for successful operation shall be equipped withvent piping leading outdoors or, if the regulator vent is an in-tegral part of the equipment appliance, into the combustionchamber adjacent to a continuous pilot, unless constructed orequipped with a vent limiting means to limit the escape of gasfrom the vent opening in the event of diaphragm failure.

(2) Vent limiting means shall be employed on listed gas appliancepressure regulators only.

[(3) unchanged]

(4) Under no circumstances shall a regulator be vented to the gasutilization equipment appliance flue or exhaust system.

[(5) unchanged]

(6) A vent line(s) from a gas appliance pressure regulator and ableed line(s) from a diaphragm type valve shall not be con-nected to a common manifold terminating in a combustionchamber. Vent lines shall not terminate in positive-pressure-type combustion chambers. [ROP 54/Z223.1–64]

8.1.20 Bleed Lines for Diaphragm-Type Valves. Bleed lines shallcomply with the following requirements:

(1) Diaphragm-type valves shall be equipped to convey bleed gasto the outside atmosphere outdoors or into the combustionchamber adjacent to a continuous pilot. [ROP 54/Z223.1–14]

[(2) unchanged]

(3) Bleed lines shall not terminate in the gas utilization equipmentappliance flue or exhaust system. [ROP 54/Z223.1–64]

[(4) unchanged]

(5) A bleed line(s) from a diaphragm type valve and a vent line(s)from a gas appliance pressure regulator shall not be connectedto a common manifold terminating in a combustion chamber.Bleed lines shall not terminate in positive-pressure-type com-bustion chambers. [ROP 54/Z223.1–64]

8.1.21 Combination of Appliances and Equipment. Any combi-nation of gas utilization appliances, equipment, attachments, or de-vices used together in any manner shall comply with the standardsthat apply to the individual appliance and equipment. [ROP54/Z223.1–64]

8.1.22 Installation Instructions. The installing agency shall con-form with the appliance and equipment manufacturers’ recommen-dations in completing an installation. The installing agency shallleave the manufacturers’ installation, operating, and maintenanceinstructions in a location on the premises where they will be readilyavailable for reference and guidance of the authority having juris-diction, service personnel, and the owner or operator. [ROP54/Z223.1–64]

8.1.23 Protection of Outdoor Equipment. Gas utilizationequipment Appliances not listed for outdoor installation but in-stalled outdoors shall be provided with protection to the degree thatthe environment requires. Equipment Appliances listed for outdoorinstallation shall be permitted to be installed without protection inaccordance with the provisions of their listing manufacturer’s in-

stallation instructions. [See 8.2.1.] [ROP 54/Z223.1–64], [ROP54/Z223.1–64a]

8.2 Accessibility and Clearance.

8.2.1 Accessibility for Service. All gas utilization equipmentappliances shall be located with respect to building constructionand other equipment so as to permit access to the gas utilizationequipment appliance. Sufficient clearance shall be maintained topermit cleaning of heating surfaces; the replacement of filters,blowers, motors, burners, controls, and vent connections; the lubri-cation of moving parts where necessary; the adjustment and clean-ing of burners and pilots; and the proper functioning of explosionvents, if provided. For attic installation, the passageway and serv-icing area adjacent to the equipment appliance shall be floored.[ROP 54/Z223.1–64]

8.2.2 Clearance to Combustible Materials. Gas utilizationequipment Appliances and their vent connectors shall be installedwith clearances from combustible material so their operation willnot create a hazard to persons or property. Minimum clearancesbetween combustible walls and the back and sides of variousconventional types of equipment appliances and their ventconnectors are specified in Chapter 9 and Chapter 10. (Referencecan also be made to NFPA 211, Standard for Chimneys,Fireplaces, Vents, and Solid Fuel-Burning Appliances.) [ROP54/Z223.1–64]

8.2.3 Installation of Carpeting. Equipment Appliances shall notbe installed on carpeting, unless the equipment appliance is listedfor such installation. [ROP 54/Z223.1–64]

8.3* Air for Combustion and Ventilation.

8.3.1 General.

8.3.1.1 Air for combustion, ventilation, and dilution of flue gasesfor gas utilization equipment appliances installed in buildingsshall be obtained by application of one of the methods covered in8.3.2 through 8.3.6. Where the requirements of 8.3.2 are not met,outdoor air shall be introduced in accordance with methods cov-ered in 8.3.3 through 8.3.6. [ROP 54/Z223.1–64]

[8.3.1.1 Exception No. 1 and No. 2 unchanged]

8.3.1.2 Gas aAppliances of other than natural draft design andother than category I vented appliances shall be provided withcombustion, ventilation and dilution air in accordance with theappliance manufacturer’s instructions. [ROP 54/Z223.1–64]

8.3.1.3 Equipment Appliances shall be located so as not to inter-fere with proper circulation of combustion, ventilation, and dilu-tion air. [ROP 54/Z223.1–64]

8.3.1.4 Where used, a draft hood or a barometric draft regulatorshall be installed in the same room or enclosure as the equipmentappliance served so as to prevent any difference in pressure be-tween the hood or regulator and the combustion air supply.[ROP 54/Z223.1–64]

[8.3.1.5 through 8.3.2.3 unchanged]

(1)* Combining spaces on the same story. Each opening shallhave a minimum free area of 1 in.2/1000 Btu/hr (2,200mm2/kW) of the total input rating of all gas utilizationequipment appliances in the space, but not less than 100 in.2

(0.06 m2). One opening shall commence within 12 in. (300mm) of the top, and one opening shall commence within 12in. (300 mm) of the bottom, of the enclosure [see Figure

NFPA 54/Z223.1 – A05 ROP

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A.8.3.2.3 (1)]. The minimum dimension of air openingsshall be not less than 3 in. (80 mm). [ROP 54/Z223.1–64]

(2) Combining spaces in different stories. The volumes ofspaces in different stories shall be considered as communi-cating spaces where such spaces are connected by one ormore openings in doors or floors having a total minimumfree area of 2 in.2/1000 Btu/hr (4,400 mm2/kW) of total in-put rating of all gas utilization equipment appliances. [ROP54/Z223.1–64]

[8.3.3 through 8.3.3.1 unchanged]

(1)* Where directly communicating with the outdoors or wherecommunicating to the outdoors through vertical ducts, eachopening shall have a minimum free area of 1 in.2/4000Btu/hr (550 mm2/kW) of total input rating of all equipmentappliances in the enclosure. [See Figure A.8.3.3.1 (1)(a)and Figure A.8.3.3.1 (1)(b)] [ROP 54/Z223.1–64]

(2)* Where communicating with the outdoors through horizontalducts, each opening shall have a minimum free area of 1in.2/2000 Btu/hr (1100 mm2/kW) of total input rating of allequipment appliances in the enclosure. [See FigureA.8.3.3.1 (2)] [ROP 54/Z223.1–64]

8.3.3.2* One Permanent Opening Method: One permanentopening, commencing within 12 in. (300 mm) of the top of theenclosure, shall be provided. The equipment appliance shall haveclearances of at least 1 in. (25 mm) from the sides and back and6 in. (150 mm) from the front of the appliance. The opening shalldirectly communicate with the outdoors or shall communicatethrough a vertical or horizontal duct to the outdoors or spacesthat freely communicate with the outdoors [see Figure A.8.3.3.2]and shall have a minimum free area of the following:

(1) 1 in.2/3000 Btu/hr (700 mm2/kW) of the total input rating ofall equipment appliances located in the enclosure, and

(2) Not less than the sum of the areas of all vent connectors inthe space [ROP 54/Z223.1–64]

[8.3.4 through 8.3.6.3 unchanged]

8.3.7 Louvers and Grilles and Screens. [ROP 54/Z223.1–69]

8.3.7.1 Louvers and Grilles. The required size of openings forcombustion, ventilation, and dilution air shall be based on the netfree area of each opening. Where the free area through a designof louver or grille or screen is known, it shall be used in calcu-lating the size opening required to provide the free area speci-fied. Where the louver or grille design and free area are notknown, it shall be assumed that wood louvers will have 25 per-cent free area and metal louvers and grilles will have 75 percentfree area. Nonmotorized louvers and grilles shall be fixed in theopen position. [ROP 54/Z223.1–69]

8.3.7.2 Minimum Screen Mesh Size. Screens shall have a meshsize not smaller than _-inch. [ROP 54/Z223.1–69]

8.3.7.23 Motorized louvers shall be interlocked with the equip-ment appliance so they are proven in the full open position priorto main burner ignition and during main burner operation. Meansshall be provided to prevent the main burner from ignitingshould the louver fail to open during burner startup and to shutdown the main burner if the louvers close during burner opera-tion. [ROP 54/Z223.1–64]

[8.3.8 unchanged]

8.3.8.1 Ducts shall be constructed of galvanized steel or anequivalent corrosion-resistant material a material havingequivalent corrosion resistance, strength and rigidity. [ROP54/Z223.1–70]

[8.3.8.1 Exception through 8.3.8.6 unchanged]

8.3.8.7 The remaining space surrounding a chimney liner, gasvent, special gas vent, or plastic piping installed within a ma-sonry, metal or factory built chimney, shall not be used to supplycombustion air.

Exception: Direct vent gas-fired appliances designed for instal-lation in a solid fuel burning fireplace where installed in accor-dance with the listing and the manufacturer's instruction. [ROP54/Z223.1–64], [ROP 54/Z223.1–64a]

[8.3.8.8 unchanged]

8.4 Equipment Appliances on Roofs. [ROP 54/Z223.1–64]

8.4.1 General.

8.4.1.1 Gas utilization equipment Appliances on roofs shall bedesigned or enclosed so as to withstand climatic conditions inthe area in which they are installed. Where enclosures are pro-vided, each enclosure shall permit easy entry and movement,shall be of reasonable height, and shall have at least a 30 in. (760mm) clearance between the entire service access panel(s) of theequipment appliance and the wall of the enclosure. [ROP54/Z223.1–64]

8.4.1.2 Roofs on which equipment is appliances are to be in-stalled shall be capable of supporting the additional load or shallbe reinforced to support the additional load. [ROP54/Z223.1–64]

[8.4.1.3 unchanged]

8.4.2 Installation of Equipment Appliances on Roofs. [ROP54/Z223.1–64]

8.4.2.1 Gas utilization equipment Appliances shall be installed inaccordance with its listing and the manufacturer’s installation in-structions. [ROP 54/Z223.1–64], [ROP 54/Z223.1–64a]

8.4.2.2 Equipment Appliances shall be installed on a well-drained surface of the roof. At least 6 ft (1.8 m) of clearanceshall be available between any part of the equipment applianceand the edge of a roof or similar hazard, or rigidly fixed rails,guards, parapets, or other building structures at least 42 in. (1.1m) in height shall be provided on the exposed side. [ROP54/Z223.1–64]

8.4.2.3 All equipment appliances requiring an external source ofelectrical power for its operation shall be provided with (1) areadily accessible electrical disconnecting means within sight ofthe equipment appliance that will completely deenergize theequipment appliance, and (2) a 120-V ac grounding-type recep-tacle outlet on the roof adjacent to the equipment appliance. Thereceptacle outlet shall be on the supply side of the disconnectswitch. [ROP 54/Z223.1–64]

8.4.2.4 Where water stands on the roof at the equipment appli-ance or in the passageways to the equipment appliance, or wherethe roof is of a design having a water seal, a suitable platform orwalkway or both shall be provided above the water line. Suchplatform(s) or walkway(s) shall be located adjacent to theequipment appliance and control panels so that the equipment

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appliance can be safely serviced where water stands on the roof.[ROP 54/Z223.1–64]

8.4.3 Access to Equipment Appliances on Roofs. [ROP54/Z223.1–64]

8.4.3.1 Gas utilization equipment Appliances located on roofs orother elevated locations shall be accessible. [ROP54/Z223.1–64]

[8.4.3.2 through 8.4.4 unchanged]

8.5 Appliances in Attics.

8.5.1 Attic Access. An attic in which an appliance is installedshall be accessible through an opening and passageway at least aslarge as the largest component of the appliance, not less than 22 in.by 30 in. (560 mm x 760 mm).

8.5.1.1 Where the height of the passageway is less than 6 ft (1.8m), the distance from the passageway access the to applianceshall not exceed twenty 20 ft (6.1 m) measured along the centerline of the passageway .

8.5.1.2 The passageway shall be unobstructed and shall havesolid flooring not less than twenty-four 24 in. (610 mm) widefrom the entrance opening to the appliance.

8.5.2 Work Platform. A level working platform not less than 30in. (760 mm) by 30 inches shall be provided in front of the serviceside of the appliance.

8.5.3 Lighting and Convenience Outlet. A permanent 120-voltreceptacle outlet and a lighting fixture shall be installed near theappliance. The switch controlling the lighting fixture shall be lo-cated at the entrance to the passageway. [ROP 54/Z223.1–72]

8.5 Appliance and Equipment Connections to Building Piping.[ROP 54/Z223.1–64]

8.5.1 Connecting Gas Appliances and Equipment. Gas utiliza-tion equipment Appliances and equipment shall be connected to thebuilding piping in compliance with 8.5.4 through 8.5.6 by one ofthe following: [ROP 54/Z223.1–64]

[(1) through (2) unchanged]

(3) Listed connector in compliance with ANSI Z21.24, Connec-tors for Gas Appliances. The connector shall be used in accor-dance with the terms of their listing manufacturer’s installa-tion instructions, and shall be in the same room as the equip-ment appliance. Only one connector shall be used per appli-ance. [ROP 54/Z223.1–64], [ROP 54/Z223.1–64a]

(4) A listed connector in compliance with ANSI Z21.75/CSA6.27, Connectors for Outdoor Gas Appliances and Manufac-tured Homes. Only one connector shall be used per appliance.[ROP 54/Z223.1–79]

(4) (5) CSST where installed in accordance with the manufac-turer's instructions. CSST shall not pass through an appliancehousing, cabinet, or casing. CSST shall connect only to appli-ances that are fixed in place. [ROP 54/Z223.1–75a], [ROP54/Z223.1–76]

(5) (6) Listed nonmetallic gas hose connectors in accordance with8.5.2.

(6) Gas-fired food service (commercial cooking) equipment listedfor use with casters or otherwise subject to movement forcleaning, and other large and heavy gas utilization equipmentthat can be moved, shall be connected in accordance with the

connector manufacturer’s installation instructions using alisted appliance connector complying with ANSI Z21.69,Connectors for Movable Gas Appliances. [ROP54/Z223.1–78]

(7) In 8.5.1(2), (3), (5) and (56), the connector or tubing shall beinstalled so as to be protected against physical and thermaldamage. Aluminum alloy tubing and connectors shall becoated to protect against external corrosion where they are incontact with masonry, plaster, or insulation or are subject torepeated wettings by such liquids as water (except rain water),detergents, or sewage. [ROP 54/Z223.1–74], [ROP54/Z223.1–79]

8.5.1.1 Commercial Cooking Appliances. Commercial cookingappliances that are moved for cleaning and sanitation purposesshall be connected in accordance with the connector manufac-turer’s installation instructions using a listed appliance connectorcomplying with ANSI Z21.69, Connectors for Movable Gas Ap-pliances. [ROP 54/Z223.1–78]

8.5.2 Use of Nonmetallic Gas Hose Connectors. Listed gas hoseconnectors shall be used in accordance with the terms of their list-ing manufacturer’s installation instructions and as follows: [ROP54/Z223.1–64a]

(1) Indoor. Indoor gas hose connectors shall be used only to con-nect laboratory, shop, and ironing equipment appliances re-quiring mobility during operation. An equipment applianceshutoff valve shall be installed where the connector is attachedto the building piping. The connector shall be of minimumlength and shall not exceed 6 ft (1.8 m). The connector shallnot be concealed and shall not extend from one room to an-other or pass through wall partitions, ceilings, or floors. [ROP54/Z223.1–64]

(2) Outdoor. Outdoor gas hose connectors are permitted to con-nect portable outdoor gas-fired equipment appliances. Anequipment appliance shutoff valve, a listed quick-disconnectdevice, or a listed gas convenience outlet shall be installedwhere the connector is attached to the supply piping and insuch a manner so as to prevent the accumulation of water orforeign matter. This connection shall only be made in the out-door area where the equipment appliance is to be used. [ROP54/Z223.1–64]

8.5.3 Connection of Portable and Mobile Industrial GasEquipment Appliances. [ROP 54/Z223.1–64]

8.5.3.1 Where portable industrial gas utilization equipment ap-pliances or equipment appliances requiring mobility or subject tovibration is connected to the building gas piping system by theuse of a flexible hose, the hose shall be suitable and safe for theconditions under which it can be used. [ROP 54/Z223.1–64]

8.5.3.2 Where industrial gas utilization equipment appliances re-quiring mobility is connected to the rigid piping by the use ofswivel joints or couplings, the swivel joints or couplings shall besuitable for the service required and only the minimum numberrequired shall be installed. [ROP 54/Z223.1–64]

8.5.3.3 Where industrial gas utilization equipment appliancessubject to vibration is connected to the building piping system bythe use of all metal flexible connectors, the connectors shall besuitable for the service required. [ROP 54/Z223.1–64]

[8.5.3.4 unchanged]

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8.5.4 Equipment Shutoff Valves and Connections. Gasutilization equipment connected to a piping system shall have anaccessible, approved manual shutoff valve with a nondisplaceablevalve member, or a listed gas convenience outlet, installed within 6ft (1.8 m) of the equipment it serves. Where a connector is used, thevalve shall be installed upstream of the connector. A union orflanged connection shall be provided downstream from this valveto permit removal of controls. Shutoff valves serving decorativegas appliances shall be permitted to be installed in fireplaces iflisted for such use.

8.5.4 Appliance Shutoff Valves and Connections. Each gas ap-pliance connected to a piping system shall have an accessible, ap-proved manual shutoff valve with a nondisplaceable valve member,or a listed gas convenience outlet. Appliance shutoff valves andconvenience outlets shall serve a single appliance only and:

8.5.4.1 The shutoff valve shall be located within 6 ft (1.8 m) ofthe appliance it serves and comply with the following:

(1) Where a connector is used, the valve shall be installed up-stream of the connector. A union or flanged connection shallbe provided downstream from the valve to permit removal ofappliance controls.

(2) Shutoff valves serving decorative gas appliances shall bepermitted to be installed in fireplaces if listed for such use.

8.5.4.2 Shutoff valves serving appliances installed in vented fire-places and ventless firebox enclosures shall not be required to belocated within 6 ft (1.8 m) of the appliance where such valves arereadily accessible and permanently identified. The piping fromthe shutoff valve to within 6 ft (1.8 m) of the appliance shall bedesigned, sized and installed in accordance with Chapters 5 and6.

8.5.4.3 Where installed at a manifold, the appliance shutoff valveshall be located within 50 ft (15 m) of the appliance served andshall be readily accessible and permanently identified. The pip-ing from the manifold to within 6 ft (1.8 m) of the applianceshall be designed, sized and installed in accordance with Chap-ters 5 and 6. [ROP 54/Z223.1–75], [ROP 54/Z223.1–80]

8.5.5 Quick-Disconnect Devices. Quick disconnect devices used toconnect equipment appliances to the building piping shall be listedto ANSI Z21.41/CSA 6.9, Quick-Disconnect Devices for use withGas Fuel Appliances. Where installed indoors, an approved manualshutoff valve with a nondisplaceable valve member shall be in-stalled upstream of the quick-disconnect device. [ROP54/Z223.1–64], [ROP 54/Z223.1–82]

8.5.6* Gas Convenience Outlets. Gas utilization equipmentAppliances shall be permitted to be connected to the building pip-ing by means of a listed gas convenience outlet, in conjunction witha listed appliance connector, used in accordance with the terms oftheir listings manufacturer’s installation instructions. [ROP54/Z223.1–64], [ROP 54/Z223.1–64a]

8.5.7 Sediment Trap. Where a sediment trap is not incorporated asa part of the gas utilization equipment appliance, a sediment trapshall be installed as close to the inlet of the equipment appliance aspractical at the time of equipment appliance installation. The sedi-ment trap shall be either a tee fitting with a capped nipple in thebottom outlet as illustrated in Figure 8.5.7 or other device recog-nized as an effective sediment trap. Illuminating appliances, ranges,clothes dryers, decorative vented appliances for installation invented fireplaces, gas fireplaces, and outdoor grills shall not be re-quired to be so equipped. [ROP 54/Z223.1–64]

[Figure 8.5.7 unchanged]

8.5.8 Installation of Piping. Piping shall be installed in a mannernot to interfere with inspection, maintenance, or servicing of thegas utilization equipment appliances. [ROP 54/Z223.1–64]

8.6 Electrical.

8.6.1 Electrical Connections. Electrical connections between gasutilization equipment appliances and the building wiring, includingthe grounding of the equipment appliances, shall conform to NFPA70, National Electrical Code. [ROP 54/Z223.1–64]

8.6.2 Electrical Ignition and Control Devices. Electrical ignition,burner control, and electrical vent damper devices shall not permitunsafe operation of the gas utilization equipment appliance in theevent of electrical power interruption or when the power is re-stored. [ROP 54/Z223.1–64]

8.6.3 Electrical Circuit. The electrical circuit employed for oper-ating the automatic main gas-control valve, automatic pilot, roomtemperature thermostat, limit control, or other electrical devicesused with the gas utilization equipment appliances shall be in ac-cordance with the wiring diagrams supplied with the equipmentcertified or approved by the original appliance manufacturer. [ROP54/Z223.1–64], [ROP 54/Z223.1–85]

8.6.4 Continuous Power. All gas utilization equipment appliancesusing electrical controls shall have the controls connected into apermanently live electrical circuit--that is, one that is not controlledby a light switch. Central heating equipment appliances shall beprovided with a separate electrical circuit. [ROP 54/Z223.1–64]

[8.7 through 8.7.1 unchanged]

8.7.2 Drafts. Any hole in the plaster or panel through which thewires pass from the thermostat to the gas utilization equipment ap-pliance being controlled shall be sealed so as to prevent drafts fromaffecting the thermostat. [ROP 54/Z223.1–64]

Chapter 9 Installation of Specific Equipment Appliances [ROP54/Z223.1–86]

9.1 General.

9.1.1 Application. This Chapter is applicable primarily to nonin-dustrial-type gas utilization equipment appliances and installationsand, unless specifically indicated, does not apply to industrial-typeequipment appliances and installations. Listed gas utilizationequipment appliances shall be installed in accordance with theirlisting and the manufacturers’ the manufacturer’s installation in-structions, or as elsewhere specified in this part as applicable to theequipment appliance. Unlisted equipment appliances shall be in-stalled as specified in this Chapter as applicable to the equipmentappliance. For additional information concerning particular gasequipment appliances and accessories, including industrial types,reference can be made to the standards listed in Chapter 14 andAnnex L. [ROP 54/Z223.1–64a], [ROP 54/Z223.1–86]

9.1.2* Installation in Bedroom or Bathroom. Gas utilizationequipment Appliances shall not be installed so its combustion,ventilation, and dilution air are obtained only from a bedroom orbathroom unless the bedroom or bathroom has the required volumein accordance with Section 8.3.2. [ROP 54/Z223.1–86]

9.1.3 Room Size in Comparison Calculation. Where the roomsize in comparison with the size of the equipment appliance is to becalculated, the total volume of the appliance is determined from

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exterior dimensions and is to include fan compartments and burnervestibules, where used. Where the actual ceiling height of a room isgreater than 8 ft (2.4 m), the volume of the room is figured on thebasis of a ceiling height of 8 ft (2.4 m). [ROP 54/Z223.1–86]

9.2 Air Conditioning Equipment Appliance (Gas-Fired AirConditioners and Heat Pumps). [ROP 54/Z223.1–86]

9.2.1 Independent Gas Piping. Gas piping serving heating gasutilization equipment appliances shall be permitted to also servecooling equipment appliances where heating and cooling equip-ment appliances cannot be operated simultaneously. [See Section5.4.] [ROP 54/Z223.1–86]

[9.2.2 unchanged]

9.2.3 Clearances for Indoor Installation. The installation of air-conditioning equipment appliances shall comply with the followingrequirements: [ROP 54/Z223.1–86]

(1) Listed air conditioning equipment appliances installed inrooms that are large in comparison with the size of the equip-ment appliances shall be installed with clearances per theterms of their listing and in accordance with the manufac-turer's instructions. [See Table 9.2.3(a) and Section 3.3.188for definition.] [ROP 54/Z223.1–64a], [ROP 54/Z223.1–86]

(2) Air-conditioning equipment appliances installed in rooms thatare NOT large (such as alcoves and closets) in comparisonwith the size of the equipment appliance shall be listed forsuch installations and installed in accordance with the manu-facturer's instructions. Listed clearances shall not be reducedby the protection methods described in Table 9.2.3(b), re-gardless of whether the enclosure is of combustible or non-combustible material. [ROP 54/Z223.1–86]

(3) Unlisted air-conditioning equipment appliances shall be in-stalled with clearances from combustible material of not lessthan 18 in. (460 mm) above the equipment appliance and atthe sides, front, and rear and 9 in. (230 mm) from the drafthood. [ROP 54/Z223.1–86]

(4) Air-conditioning equipment appliances (listed and unlisted)installed in rooms that are large in comparison with the size ofthe equipment appliance shall be permitted to be installed withreduced clearances to combustible material provided the com-bustible material or equipment appliance is protected as de-scribed in Table 9.2.3(b) [see 9.2.3(5)]. [ROP 54/Z223.1–86]

[(5) unchanged]

(6) Listed air-conditioning equipment appliances shall have theclearance from supply ducts within 3 ft (0.9m) of the furnaceplenum be not less than that specified from the furnace ple-num. No clearance is necessary beyond this distance. [ROP54/Z223.1–86]

Table 9.2.3(a) Clearances to Combustible Material for UnlistedFurnaces, Boilers and Air Conditioners Installed in RoomsThat Are Large in Comparison With Size of Equipment Appli-ances

Revise First Column Entries as follows:

Equipment Appliance

IV Air Conditioning equipment appliances

[Remainder of Table 9.2.3(a) unchanged]

Note: See 9.2.3 for additional requirements for air-conditioningequipment appliances and 9.3.1 for additional requirements forcentral heating boilers and furnaces [ROP 54/Z223.1–86]

Table 9.2.3(b) Reduction of Clearances with Specified Forms ofProtection

[Revise the following table entries:]

(3) 0.024 in. (nominal 24 gauge) sheet metal over 1 in. glass fiberor mineral wool batts reinforced with wire on rear face with ven-tilated air space

(5) 0.024 in. (nominal 24 gauge) sheet metal with ventilated airspace

(7) 0.024 in. (nominal 24 gauge) sheet metal with ventilated airspace over 0.024 in. (nominal 24 gauge) sheet metal with venti-lated air space

(8) 1 in. glass fiber or mineral wool batts sandwiched betweentwo sheets 0.024 in. (nominal 24 gauge) sheet metal with venti-lated air space.

[Remainder of table 9.2.3(b) unchanged] [ROP 54/Z223.1–87]

Notes:

[Notes 1 through 10 unchanged]

11. Listed single-wall connectors shall be installed in accor-dance with the terms of their listing and the manufacturer'sinstallation instructions. [ROP 54/Z223.1–64a]

9.2.4 Assembly and Installation. Air-conditioning equipment ap-pliances shall be installed in accordance with the manufacturer’sinstructions. Unless the equipment appliance is listed for installa-tion on a combustible surface such as a floor or roof, or unless thesurface is protected in an approved manner, it shall be installed on asurface of noncombustible construction with noncombustible mate-rial and surface finish and with no combustible material against theunderside thereof. [ROP 54/Z223.1–86]

9.2.5 Furnace Plenums and Air Ducts. A furnace plenum sup-plied as a part of the air-conditioning equipment appliance shall beinstalled in accordance with the manufacturer's instructions. Wherea furnace plenum is not supplied with the equipment appliance, anyfabrication and installation instructions provided by the manufac-turer shall be followed. The method of connecting supply and re-turn ducts shall facilitate proper circulation of air. Where the airconditioner is installed within a room not large in comparison withthe size of the equipment appliance, the air circulated by theequipment appliance shall be handled by ducts that are sealed to thecasing of the equipment appliance and that separate the circulatingair from the combustion and ventilation air. [ROP 54/Z223.1–86]

[9.2.6 unchanged]

9.2.7 Switches in Electrical Supply Line. Means for interruptingthe electrical supply to the air-conditioning equipment applianceand to its associated cooling tower (if supplied and installed in alocation remote from the air conditioner) shall be provided withinsight of and not over 50 ft (15 m) from the air conditioner andcooling tower. [ROP 54/Z223.1–86]

[9.3 through 9.3.2 unchanged]

9.3.2.1 Listed central heating furnaces and low-pressure boilersinstalled in rooms large in comparison with the size of theequipment appliance shall be installed with clearances per theterms of their listing and in accordance with the manufacturer'sinstructions. [see Section 3.3.188 for definition.] [ROP54/Z223.1–64a], [ROP 54/Z223.1–86]

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9.3.2.2 Central heating furnaces and low-pressure boilers in-stalled in rooms that are NOT large (such as alcoves and closets)in comparison with the size of the equipment appliance shall belisted for such installations. Listed clearances shall not be reduceby the protection methods described in Table 9.2.3(b) and illus-trated in Figures 9.3.2.2(1) through 9.3.2.2(3), regardless ofwhether the enclosure is of combustible or noncombustible mate-rial. [ROP 54/Z223.1–86]

Figure 9.3.2.2(1) Extent Of Protection Necessary to ReduceClearances from Gas Equipment Appliance or Vent Connec-tors.

[Figure unchanged]

Notes: A equals the clearance with no protection specified in Table9.2.3(a) and Table 10.4.1 and in the sections applying to varioustypes of equipment appliances.

[“B” unchanged] [ROP 54/Z223.1–86]

[Figures 9.3.2.2(2) and 9.3.2.2(3) unchanged]

9.3.2.3 Unlisted central heating furnaces and low-pressure boil-ers installed in rooms that are large in comparison with the sizeof the equipment appliance shall be installed with clearances notless than those specified in Table 9.2.3(a). [ROP 54/Z223.1–86]

9.3.2.4 Central heating furnaces and low-pressure boilers (listedand unlisted) installed in rooms that are large in comparison withthe size of the equipment appliance shall be permitted to be in-stalled with reduced clearances to combustible material providedthe combustible material or equipment appliance is protected asdescribed in Table 9.2.3(b) [see 9.3.2.2]. [ROP 54/Z223.1–86]

[9.3.2.5 through 9.3.2.6 unchanged]

9.3.2.7 The clearance to this equipment appliance shall not inter-fere with combustion air, draft hood clearance and relief, and ac-cessibility for servicing. [See 8.2.1, Section 8.3, and 10.12.7.][ROP 54/Z223.1–86]

[9.3.2.8 through 9.4 unchanged]

9.4.1 Clearance. The installation of clothes dryers shall complywith the following requirements:

(1) Listed Type 1 clothes dryers shall be installed with a mini-mum clearance of 6 in. (150 mm) from adjacent combustiblematerial. Clothes dryers listed for installation at reduced clear-ances shall be installed in accordance with their listing themanufacturer’s installation instructions. Type 1 clothes dryersinstalled in closets shall be specifically listed for such installa-tion. [ROP 54/Z223.1–64a]

[9.4.1 (2) through 9.4.1 (3) unchanged]

9.4.2 Exhausting to the Outdoors. Type 1 and Type 2 clothesdryers shall be exhausted to the outside air outdoors. [ROP54/Z223.1–14]

[9.4.3 through 9.4.5.3 unchanged]

9.4.5.4 Exhaust ducts for unlisted Type 2 clothes dryers shall beinstalled with a minimum clearance of 6 in. (150 mm) from adja-cent combustible material. Where exhaust ducts for Type 2clothes dryers are installed with reduced clearances, the adjacentcombustible material shall be protected in accordance with Table9.2.3(b). [ROP 54/Z223.1–90]

[9.4.5.5 through 9.6.2 unchanged]

9.6.2.1 A listed decorative appliance for installation in a ventedfireplace shall be installed in accordance with its listing and themanufacturer's installation instructions. [ROP 54/Z223.1–64a]

[9.6.2.2 through 9.7.1 unchanged]

[Table 9.6.2.3 unchanged]

9.7.2 Installation. The installation of vented gas fireplaces shallcomply with the following requirements:

(1) Listed vented gas fireplaces shall be installed in accordancewith their listing and the manufacturers’ manufacturer’s in-stallation instructions and where installed in or attached tocombustible material shall be specifically listed for such in-stallation. [ROP 54/Z223.1–64a]

[(2) through 9.8.4 unchanged]

9.8.5 Air Supply. All air to the non-recirculating direct gas-firedindustrial air heater shall be ducted directly from outdoors. Whereoutside outdoor air dampers or closing louvers are used, they shallbe verified to be in the open position prior to main burner opera-tion. [ROP 54/Z223.1–14]

[9.8.6 through 9.9.2.2 unchanged]

9.9.3 Installation. Installation of direct gas-fired industrial airheaters shall comply with the following requirements:

[(1) through (2) unchanged]

(3) Recirculating direct gas-fired industrial air heaters shall bepermitted to provide fresh air ventilation only for the amountthat exceeds the minimum ventilation air specified on theheater's rating plate to maintain the combustion level createdby the heater in the space being served by the heater below 25ppm for carbon monoxide, 3 ppm for nitrogen dioxide, and5000 ppm for carbon dioxide. Where gas-powered fork trucksor other fossil fueled equipment are utilized in the conditionedspace, additional ventilation requirements for the facility mustbe addressed separately.

(4) Recirculating direct gas-fired industrial air heaters shall beprovided with access for removal of burners; replacement ofmotors, controls, filters, and other working parts; and for ad-justment and lubrication of parts requiring maintenance. [ROP54/Z223.1–91], [ROP 54/Z223.1–92]

[9.9.4 unchanged]

9.9.5 Air Supply. Ventilation air to the recirculating direct gas-fired industrial air heater shall be ducted directly from outdoors.Air to the recirculating direct gas-fired industrial air heater in ex-cess of the minimum ventilation air specified on the heater's ratingplate shall be taken from the building, ducted directly from out-doors, or a combination of both. Where outside outdoor air damp-ers or closing louvers are used, they shall be verified to be in theopen position prior to main burner operation. [ROP 54/Z223.1–14]

[9.9.6 through 9.10 unchanged]

9.10.1 Clearances. The installation of duct furnaces shall complywith the following clearance requirements:

(1) Listed duct furnaces shall be installed with clearances of atleast 6 in. (150 mm) between adjacent walls, ceilings, andfloors of combustible material and the furnace draft hood.Furnaces listed for installation at lesser clearances shall be in-stalled in accordance with their listings manufacturer’s instal-lation instructions. In no case shall the clearance be such as tointerfere with combustion air and accessibility. [See 8.2.1 andSection 8.3.] [ROP 54/Z223.1–64a]

[(2) unchanged]

9.10.2 Erection of Equipment Appliances. Duct furnaces shall beerected and firmly supported in accordance with the manufacturers’instructions. [ROP 54/Z223.1–86]

[9.10.3 through 9.10.6.1 unchanged]

9.10.6.2 Duct furnaces used in conjunction with cooling equip-ment appliance shall be installed in parallel with or on the up-

NFPA 54/Z223.1 – A05 ROP

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stream side of cooling coils to avoid condensation within heatingelements. With a parallel flow arrangement, the dampers or othermeans used to control the flow of air shall be sufficiently tight toprevent any circulation of cooled air through the unit.

Exception: Where the duct furnace has been specifically listedfor downstream installation. [ROP 54/Z223.1–86]

[9.10.6.3 unchanged]

9.10.6.4 Where a duct furnace is installed downstream of anevaporative cooler or air washer, the heat exchanger shall beconstructed of corrosion-resistant materials. Stainless steel, ce-ramic-coated steel, and an aluminum-coated steel in which thebond between the steel and the aluminum is an iron-aluminumalloy are considered to be corrosion resistant. Air washers oper-ating with chilled water that deliver air below the dew point ofthe ambient air at the duct furnace equipment are considered asrefrigeration systems. [ROP 54/Z223.1–86]

[9.10.7 through 9.11 unchanged]

9.11.1 Installation. The installation of floor furnaces shall complywith the following requirements:

(1) Listed floor furnaces shall be installed in accordance with theirlisting and the manufacturers’ manufacturer’s installation in-structions. [ROP 54/Z223.1–64a]

[(2) through 9.11.2 unchanged]

9.11.2.1 Listed automatically operated floor furnaces shall beequipped with temperature limit controls in accordance with theterms of their listing. [ROP 54/Z223.1–64a]

[9.11.2.2 through 9.11.8 unchanged]

9.11.9 Seepage Pan. Where the excavation exceeds 12 in. (300mm) in depth or water seepage is likely to collect, a watertight cop-per pan, concrete pit, or other suitable material shall be used, unlessadequate drainage is provided or the equipment appliance is sealedby the manufacturer to meet this condition. A copper pan shall bemade of not less than 16 oz/ft2 (4.9 kg/m2) sheet copper. The panshall be anchored in place so as to prevent floating, and the wallsshall extend at least 4 in. (100 mm) above the ground level with atleast 6 in. (150 mm) clearance on all sides, except the control side,which shall have at least 18 in. (460 mm) clearance. [ROP54/Z223.1–86]

[9.11.10 through 9.11.12 unchanged]

9.12 Food Service Equipment Appliances, Floor-Mounted.[ROP 54/Z223.1–86]

9.12.1 Clearance for Listed Equipment Appliances. Listed floor-mounted food service equipment appliances, such as ranges forhotels and restaurants, deep fat fryers, unit broilers, gas-fired ket-tles, steam cookers, steam generators, and baking and roasting ov-ens, shall be installed at least 6 in. (150 mm) from combustiblematerial except that at least a 2 in. (50 mm) clearance shall bemaintained between a draft hood and combustible material. Floor-mounted food service equipment appliances listed for installation atlesser clearances shall be installed in accordance with its listing andthe manufacturer’s installation instructions. Equipment Appliancesdesigned and marked “For use only in noncombustible locations”shall not be installed elsewhere. [ROP 54/Z223.1–64a], [ROP54/Z223.1–86]

9.12.2 Clearance for Unlisted Equipment Appliances. Unlistedfloor-mounted food service equipment appliances shall be installedto provide a clearance to combustible material of not less than 18in. (460 mm) from the sides and rear of the equipment applianceand from the vent connector and not less than 48 in. (1.2 m) abovecooking tops and at the front of the equipment appliance. Clear-ances for unlisted equipment appliances installed in partially en-

closed areas such as alcoves shall not be reduced. Clearances forunlisted equipment appliances installed in rooms that are not par-tially enclosed shall be in accordance with Table 9.2.3(b). [ROP54/Z223.1–86]

9.12.3 Mounting on Combustible Floor.

9.12.3.1 Listed floor-mounted food service equipment appliancesthat is are listed specifically for installation on floors constructedof combustible material shall be permitted to be mounted oncombustible floors in accordance with its listing and the manu-facturer’s instructions. [ROP 54/Z223.1–64a] , [R O P54/Z223.1–86]

9.12.3.2 Floor-mounted food service equipment appliances thatis are not listed for mounting on a combustible floor shall bemounted in accordance with 9.12.4 or be mounted in accordancewith one of the following: [ROP 54/Z223.1–86]

(1) Where the equipment appliance is set on legs that providenot less than 18 in. (460 mm) open space under the base ofthe equipment appliance or where it has no burners and noportion of any oven or broiler within 18 in. (460 mm) of thefloor, it shall be permitted to be mounted on a combustiblefloor without special floor protection, provided there is atleast one sheet metal baffle between the burner and thefloor. [ROP 54/Z223.1–86]

(2) Where the equipment appliance is set on legs that providenot less than 8 in. (200 mm) open space under the base ofthe equipment appliance, it shall be permitted to bemounted on combustible floors, provided the floor underthe equipment appliance is protected with not less than 3/8in. (9.5 mm) insulating millboard covered with sheet metalnot less than 0.0195 in. (0.5 mm) thick. The precedingspecified floor protection shall extend not less than 6 in.(150 mm) beyond the equipment appliance on all sides.[ROP 54/Z223.1–86]

(3) Where the equipment appliance is set on legs that providenot less than 4 in. (100 mm) under the base of the equip-ment appliance, it shall be permitted to be mounted oncombustible floors, provided the floor under the equipmentappliance is protected with hollow masonry not less than 4in. (100 mm) in thickness covered with sheet metal not lessthan 0.0195 in. (0.5 mm) thick. Such masonry courses shallbe laid with ends unsealed and joints matched in such a wayas to provide for free circulation of air through the masonry.[ROP 54/Z223.1–86]

(4) Where the equipment appliance does not have legs at least 4in. (100 mm) high, it shall be permitted to be mounted oncombustible floors, provided the floor under the equipmentappliance is protected by two courses of 4 in. (100 mm)hollow clay tile, or equivalent, with courses laid at right an-gles and with ends unsealed and joints matched in such away as to provide for free circulation of air through suchmasonry courses, and covered with steel plate not less than3/16 in. (4.8 mm) in thickness. [ROP 54/Z223.1–86]

9.12.4 Mounting on Noncombustible Floor. Listed floor-mountedfood service equipment appliances that is are designed and marked“For use only in noncombustible locations” shall be mounted onfloors of noncombustible construction with noncombustible floor-ing and surface finish and with no combustible material against theunderside thereof, or on noncombustible slabs or arches having nocombustible material against the underside thereof. Such construc-tion shall in all cases extend not less than 12 in. (300 mm) beyondthe equipment appliance on all sides. [ROP 54/Z223.1–86]

[9.12.5 unchanged]

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9.12.6 For Use with Casters. Floor-mounted equipment applianceswith casters shall be listed for such construction and shall be in-stalled in accordance with their listing and the accompanyingmanufacturer’s installation instructions for limiting the movementof the equipment appliance to prevent strain on the connection.[ROP 54/Z223.1–64a], [ROP 54/Z223.1–86]

9.12.7 Level Installation. Floor-mounted food service equipmentappliances shall be installed level on a firm foundation. [ROP54/Z223.1–86]

9.12.8* Ventilation. Means shall be provided to properly ventilatethe space in which food service equipment appliance is installed topermit proper combustion of the gas. [ROP 54/Z223.1–86]

9.13 Food Service Equipment Appliances Counter Appliances.[ROP 54/Z223.1–86]

[9.13.1 unchanged]

9.13.2 Clearance for Listed Appliances. Listed food servicecounter appliances such as hot plates and griddles, food and dishwarmers, and coffee brewers and urns, where installed on combus-tible surfaces, shall be set on their own bases or legs and shall beinstalled with a minimum horizontal clearance of 6 in. (150 mm)from combustible material, except that at least a 2 in. (50 mm)clearance shall be maintained between a draft hood and combusti-ble material. Food service counter appliances listed for installationat lesser clearances shall be installed in accordance with their list-ing and the manufacturers’ manufacturer’s installation instructions.[ROP 54/Z223.1–64a]

[9.13.3 through 9.15.1 unchanged]

9.15.1.1 Clearance from Combustible Material. The clear-ances specified as follows shall not interfere with combustionair, accessibility for operation, and servicing:

(1) Listed floor-mounted household cooking appliances, whereinstalled on combustible floors, shall be set on their ownbases or legs and shall be installed in accordance with theirlisting and the manufacturers’ manufacturer’s installationinstructions. [ROP 54/Z223.1–64a]

[(2) unchanged]

(3) Listed household cooking appliances that include a solid orliquid fuel-burning section shall be spaced from combusti-ble material and otherwise installed in accordance with themanufacturer’s installation instructions for standards ap-plying to the supplementary fuel section of the appliance.[ROP 54/Z223.1–64a]

[(4) through 9.15.1.2 (2) unchanged]

(3) A listed cooking appliance or microwave oven is installedover a listed cooking appliance and will conform to theterms of the upper appliance’s listing and the manufactur-ers’ manufacturer’s installation instructions. [ROP54/Z223.1–64a]

[9.15.1.3 through 9.15.2 unchanged]

9.15.2.1 Installation. Listed built-in household cooking appli-ances shall be installed in accordance with their listing and themanufacturer's installation instructions. The installation shall notinterfere with combustion air, accessibility for operation, andservicing. Unlisted built-in household cooking appliances shallnot be installed in, or adjacent to, combustible material. [ROP54/Z223.1–64a]

[9.15.2.2 through 9.15.2.2 (2) unchanged]

(3) A listed cooking appliance or microwave oven is installedover a listed cooking appliance and will conform to theterms of the upper appliance’s listing and the manufac-turer’s installation instructions. [ROP 54/Z223.1–64a]

[9.15.2.3 through 9.16 unchanged]

9.16.1 Clearances for Listed Appliances. Listed illuminating ap-pliances shall be installed in accordance with their listing and themanufacturers’ the manufacturer’s installation instructions. [ROP54/Z223.1–64a]

[9.16.2 through 9.16.4 unchanged]

[Table 9.16.2.2(1) unchanged]

9.16.5 Gas Appliance Pressure Regulators. Where a gas appli-ance pressure regulator is not supplied with an illuminating appli-ance and the service line is not equipped with a service pressureregulator, an appliance pressure regulator shall be installed in theline serving one or more illuminating appliances. [ROP54/Z223.1–86]

[9.17 through 9.18.1 unchanged]

9.18.2 Clearance. The installation of infrared heaters shall complywith the following clearance requirements:

(1) Listed heaters shall be installed with clearances from combus-tible material in accordance with their listing and the manu-facturers’ manufacturer’s installation instructions. [ROP54/Z223.1–64a]

[(2) through 9.19 unchanged]

9.19.1 Listed Units. Listed open-top broiler units shall be installedin accordance with their listing and the manufacturers’ the manu-facturer’s installation instructions. [ROP 54/Z223.1–64a]

[9.19.2 through 9.20 unchanged]

9.20.1 Listed Units. Listed outdoor cooking appliances shall beinstalled in accordance with their listing and the manufacturers’ themanufacturer’s installation instructions. [ROP 54/Z223.1–64a]

[9.20.2 through 9.21.1 unchanged]

9.21.2 Clearance. The installation of pool heaters shall complywith the following requirements:

[(1) unchanged]

(2) A listed pool heater shall be installed in accordance with itslisting and the manufacturer’s installation instructions. [ROP54/Z223.1–64a]

[(3) through 9.23.2 unchanged]

9.23.3 Clearance. A room heater shall be placed so as not to causea hazard to walls, floors, curtains, furniture, doors when open, andso on, and to the free movements of persons within the room.Heaters designed and marked “For use in noncombustible fireplaceonly” shall not be installed elsewhere. Listed room heaters shall beinstalled in accordance with their listings and the manufacturers’the manufacturer’s installation instructions. In no case shall theclearances be such as to interfere with combustion air andaccessibility. Unlisted room heaters shall be installed withclearances from combustible material not less than the following:[ROP 54/Z223.1–64a]

[9.23.3 (1) through 9.25 unchanged]

9.25.1 Clearance. A listed gas-fired toilet shall be installed inaccordance with its listing and the manufacturer’s installationinstructions, provided that the clearance shall in any case besufficient to afford ready accessibility for use, cleanout, andnecessary servicing. [ROP 54/Z223.1–64a]

[9.25.2 through 9.26.2 unchanged]

9.26.2.1 Suspended-Type Unit Heaters. Suspended-type unitheaters shall comply with the following requirements:

(1) A listed unit heater shall be installed with clearances fromcombustible material of not less than 18 in. (460 mm) at thesides, 12 in. (300 mm) at the bottom, and 6 in. (150 mm)

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above the top where the unit heater has an internal drafthood, or 1 in. (25 mm) above the top of the sloping side of avertical draft hood. A unit heater listed for reducedclearances shall be installed in accordance with its listingand the manufacturer’s installation instructions. [ROP54/Z223.1–64a]

[(2) through (3) unchanged]

9.26.2.2 Floor-Mounted-Type Unit Heaters. Floor-mounted-type unit heaters shall comply with the following requirements:

(1) A listed unit heater shall be installed with clearances fromcombustible material at the back and one side only of notless than 6 in. (150 mm). Where the flue gases are ventedhorizontally, the 6 in. (150 mm) clearance shall be meas-ured from the draft hood or vent instead of the rear wall ofthe unit heater. A unit heater listed for reduced clearancesshall be installed in accordance with its listing and themanufacturer’s installation instructions. [ROP54/Z223.1–64a]

[(2) through 9.27.1 unchanged]

9.27.1.1 Listed wall furnaces shall be installed in accordancewith their listing and the manufacturers’ the manufacturer’sinstallation instructions. Wall furnaces installed in or attached tocombustible material shall be listed for such installation. [ROP54/Z223.1–64a]

[9.27.1.2 through 9.27.1.3 unchanged]

[Figure 9.27.1.3 unchanged]

9.27.1.4 Direct-vent wall furnaces shall be installed with thevent-air intake terminal in the outside atmosphere outdoors. Thethickness of the walls on which the furnace is mounted shall bewithin the range of wall thickness marked on the furnace andcovered in the manufacturers’ installation instructions. [ROP54/Z223.1–14]

[9.27.1.5 through 9.28.1.1 (2) unchanged]

9.28.1.2 Water heaters of other than the direct-vent type shall belocated as close as practical to the chimney or gas vent. [ROP54/Z223.1–99]

9.28.2 Clearance.

9.28.2.1 The clearances shall not be such as to interfere withcombustion air, draft hood clearance and relief, and accessibilityfor servicing. Listed water heaters shall be installed inaccordance with their listing and the manufacturers’ themanufacturer’s installation instructions. [ROP 54/Z223.1–64a]

[9.28.2.2 unchanged]

9.28.3 Pressure-Limiting Devices. A water heater installationshall be provided with overpressure protection by means of an ap-proved, listed device installed in accordance with the terms of itslisting and the manufacturer's installation instructions. The pres-sure setting of the device shall exceed the water service pressureand shall not exceed the maximum pressure rating of the waterheater. [ROP 54/Z223.1–64a]

9.28.4 Temperature-Limiting Devices. Water heater installationor a hot water storage vessel installation shall be providedovertemperature protection by means of an approved, listed deviceinstalled in accordance with the terms of its listing and the manu-facturers' manufacturer’s installation instructions. [ROP54/Z223.1–64a]

9.28.5 Temperature, Pressure, and Vacuum Relief Devices. Theinstallation of tTemperature, pressure, and vacuum relief devices orcombinations thereof, and automatic gas shutoff devices, shall beinstalled in accordance with the terms of their listing and themanufacturers’ manufacturer’s installation instructions. A shutoff

valve shall not be placed between the relief valve and the waterheater or on discharge pipes between such valves and theatmosphere. The hourly Btu discharge capacity or the rated steamrelief capacity of the device shall not be less than the input rating ofthe water heater. [ROP 54/Z223.1–64a]

[9.28.6 unchanged]

9.28.7 Circulating Tank Types.

9.28.7.1 Connection to Tank. The method of connecting thecirculating water heater to the tank shall provide proper circula-tion of water through the heater and permit a safe and usefultemperature of water to be drawn from the tank. [See Figure9.28.7.1.]

Figure 9.28.7.1Typical gravity circulating tank-type installation.

9.28.7.2 Size of Water Circulating Piping. The size of the wa-ter circulating piping shall conform with the size of the waterconnections of the heater.

9.28.7.3 Sediment Drain. A suitable water valve or cock,through which sediment can be drawn off or the tank emptied,shall be installed at the bottom of the tank. [ROP54/Z223.1–100]

[9.28.8 through 9.31 unchanged]

Chapter 10 Venting of Equipment Appliances [ROP54/Z223.1–101]

10.1 Minimum Safe Performance. A venting system shall be de-signed and constructed so as to develop a positive flow adequate toconvey flue or vent gases to the outdoors. [ROP 54/Z223.1–101a]

10.1 General. This chapter recognizes that the choice of ventingmaterials and the methods of installation of venting systems aredependent on the operating characteristics of the gas utilizationequipment appliance. The operating characteristics of vented gasutilization equipment appliances can be categorized with respect to(1) positive or negative pressure within the venting system; and (2)whether or not the equipment appliance generates flue or vent gasesthat can condense in the venting system. See Section 3.3 for thedefinition of these vented appliance categories. Listed vents shallbe installed in accordance with the manufacturer’s installationinstructions. [ROP 54/Z223.1–64a], [ROP 54/Z223.1–101]

10.2 Specification for Venting.

10.2.1 Connection to Venting Systems. Except as permitted in10.2.2 through 10.2.6, all gas utilization equipment appliances shallbe connected to venting systems. [ROP 54/Z223.1–101]

10.2.2 Equipment Appliances Not Required to be Vented. Thefollowing equipment appliance shall not be required to bevented: [ROP 54/Z223.1–101]

[(1) through (4) unchanged]

(5) A single listed booster-type (automatic instantaneous) waterheater, when designed and used solely for the sanitizing rinserequirements of a dishwashing machine, provided that theequipment appliance is installed, with the draft hood in placeand unaltered, if a draft hood is required, in a commercialkitchen having a mechanical exhaust system; where installedin this manner, the draft hood outlet shall not be less than 36in. (910 mm) vertically and 6 in. (150 mm) horizontally fromany surface other than the equipment appliance. [ROP54/Z223.1–101]

[(6) through (9) unchanged]

(10) Other equipment appliances listed for unvented use and notprovided with flue collars [ROP 54/Z223.1–101]

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(11) Specialized equipment appliances of limited input such aslaboratory burners or gas lights [ROP 54/Z223.1–101]

Where any or all of this equipment these appliances in 10.2.2 (5)through (11) is installed so the aggregate input rating exceeds 20Btu/hr/ft3 (207 W/m3) of room or space in which it is installed, oneor more shall be provided with venting systems or other approvedmeans for removing conveying the vent gases to the outside atmos-phere outdoors so the aggregate input rating of the remaining un-vented equipment appliances does not exceed the 20 Btu/hr/ft3 (207W/m3). Where the calculation includes the volume of an adjacentroom or space, the room or space in which the equipment applianceis installed shall be directly connected to the adjacent room orspace by a doorway, archway, or other opening of comparable sizethat cannot be closed. [ROP 54/Z223.1–14], [ROP54/Z223.1–101]

10.2.3* Ventilating Hoods. Ventilating hoods and exhaust systemsshall be permitted to be used to vent gas utilization equipment ap-pliances installed in commercial applications [see 10.3.5.] and tovent industrial equipment appliances, particularly where the proc-ess itself requires fume disposal. [See 8.1.6 and 8.1.9.] [ROP54/Z223.1–101]

10.2.4 Well-Ventilated Spaces. The operation of industrial gasutilization equipment appliances such that its flue gases are dis-charged directly into a large and well-ventilated space shall bepermitted. [ROP 54/Z223.1–101]

10.2.5 Direct-Vent Equipment Appliances. Listed direct-vent gasutilization equipment appliances shall be considered properlyvented where installed in accordance with the terms of its listing,the manufacturer’s installation instructions, and 10.8.3. [ROP54/Z223.1–64a], [ROP 54/Z223.1–101], [ROP 54/Z223.1–103]

10.2.6 Equipment Appliances with Integral Vents. Gas utiliza-tion equipment Appliances incorporating integral venting meansshall be considered properly vented where installed in accordancewith its listing, the manufacturers’ installation instructions, and10.8.1 and 10.8.2. [ROP 54/Z223.1–101]

10.3 Design and Construction.

10.3.1 Minimum Safe Performance. A venting system shall bedesigned and constructed so as to develop a positive flow adequateto remove flue or vent gases to the outside atmosphere. [ROP54/Z223.1–101a]

10.3.2 Equipment Appliance Draft Requirements. A ventingsystem shall satisfy the draft requirements of the equipment appli-ance in accordance with the manufacturer’s instructions. [ROP54/Z223.1–101]

10.3.3 Design and Construction. Gas utilization equipment Appli-ances required to be vented shall be connected to a venting systemdesigned and installed in accordance with the provisions of Sec-tions 10.4 through 10.15. [ROP 54/Z223.1–101]

10.3.4 Mechanical Draft Systems.

10.3.4.1 Mechanical draft systems shall be listed and shall be in-stalled in accordance with the terms of their listing and both theappliance and the mechanical draft system manufacturers’ manu-facturer’s installation instructions. [ROP 54/Z223.1–64a]

10.3.4.2 Gas utilization equipment Appliances requiring ventingshall be permitted to be vented by means of mechanical draftsystems of either forced or induced draft design.

Exception: Incinerators. [ROP 54/Z223.1–101]

[10.3.4.3 unchanged]

10.3.4.4 Vent connectors serving equipment appliances ventedby natural draft shall not be connected into any portion of me-

chanical draft systems operating under positive pressure. [ROP54/Z223.1–101]

10.3.4.5 Where a mechanical draft system is employed, provi-sion shall be made to prevent the flow of gas to the main burnerswhen the draft system is not performing so as to satisfy the oper-ating requirements of the equipment appliance for safe perform-ance. [ROP 54/Z223.1–101]

[10.3.4.6 unchanged]

10.3.5* Ventilating Hoods and Exhaust Systems.

10.3.5.1 Ventilating hoods and exhaust systems shall be permit-ted to be used to vent gas utilization equipment appliances in-stalled in commercial applications. [ROP 54/Z223.1–101]

10.3.5.2 Where automatically operated gas utilization equipmentis appliances are vented through a ventilating hood or exhaustsystem equipped with a damper or with a power means ofexhaust, provisions shall be made to allow the flow of gas to themain burners only when the damper is open to a position toproperly vent the equipment appliance and when the powermeans of exhaust is in operation. [ROP 54/Z223.1–101]

10.3.6 Circulating Air Ducts, Above-Ceiling Air HandlingSpaces, and Furnace Plenums.

10.3.6.1 No portion of a venting system shall extend into or passthrough any circulating air duct or furnace plenum.

10.3.6.2 Where a venting system passes through an above-ceilingair space or other non-ducted portion of an air handling system,it shall conform to one of the following requirements:

1) The venting system shall be a listed Special Gas Vent, othersystem serving a Category III or Category IV appliance, orother positive pressure vent, with joints sealed in accordancewith the appliance or vent manufacturers' instructions.

2) The vent system shall be installed such that no fittings orjoints between sections are installed in the above-ceilingspace.

3) The venting system shall be installed in a conduit or enclo-sure with joints between the interior of the enclosure and theceiling space sealed. [ROP 54/Z223.1–105]

[10.4 through 10.4.1 unchanged]

Table 10.4.1 Type of Venting System to Be Used.

[Revise the following table entries:]

Gas Utilization Equipment Ap-pliances

Listed Category Iequipment appliances

Listed equipment appliancesequipped with draft hoods

Equipment Appliances listedfor use with Type B gas vent

Special Gas Vent listed for thisequipment these appliances[10.4.3]

Category II equipment appliances

Category III equipment appliances

Category IV equipment appliances

As specified or furnished bymanufacturers of listed equip-ment appliances [10.4.2, 10.4.3]

Equipment Appliances that can beconverted to use of solid fuel

Unlisted combination gasand oil-burning equipment appli-ances

Combination gas- and solid-fuel-burning equipment appliances

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Equipment Appliances listed foruse with chimneys only

Unlisted equipment appliances

Listed combination gas and oil-burning equipment appliances

Direct vent equipment appliances

Equipment Appliances with inte-gral vents

[All remaining table entries unchanged] [ROP 54/Z223.1–101]

10.4.2 Plastic Piping. Plastic piping used for venting equipmentappliances listed for use with such venting materials shall be ap-proved. [ROP 54/Z223.1–101]

10.4.3 Special Gas Vent. Special gas vent shall be listed and in-stalled in accordance with the terms of the special gas vent listingand the manufacturers’ manufacturer’s installation instructions.[ROP 54/Z223.1–64a]

10.5 Masonry, Metal, and Factory-Built Chimneys.

10.5.1 Listing or Construction.

10.5.1.1 Factory-built chimneys shall be installed in accordancewith their listing and the manufacturers’ the manufacturer’s in-stallation instructions. Factory-built chimneys used to vent appli-ances that operate at positive vent pressure shall be listed forsuch application. [ROP 54/Z223.1–64a]

[10.5.1.2 unchanged]

10.5.1.3* Masonry chimneys shall be built and installed in ac-cordance with NFPA 211, Standard for Chimneys, Fireplaces,Vents, and Solid Fuel-Burning Appliances, and lined with ap-proved clay flue lining, a listed chimney lining system, or otherapproved material that will resist corrosion, erosion, softening,or cracking from vent gases at temperatures up to 1800°F(982°C).

Exception: Masonry chimney flues lined with a chimney liningsystem specifically listed for use with listed gas appliances withdraft hoods, Category I appliances, and other gas applianceslisted for use with Type B vents shall be permitted. The linershall be installed in accordance with the liner manufacturer’sinstallation instructions and the terms of the listing. A permanentidentifying label shall be attached at the point where the con-nection is to be made to the liner. The label shall read: “Thischimney liner is for appliances that burn gas only. Do not con-nect to solid or liquid fuel-burning appliances or incinerators.”[ROP 54/Z223.1–64a], [ROP 54/Z223.1–101]

10.5.2 Termination.

10.5.2.1 A chimney for residential-type or low-heat gas utiliza-tion equipment appliances shall extend at least 3 ft (0.9 m) abovethe highest point where it passes through a roof of a building andat least 2 ft (0.6 m) higher than any portion of a building within ahorizontal distance of 10 ft (3 m). [See Figure 10.5.2.1.] [ROP54/Z223.1–101]

10.5.2.2 A chimney for medium-heat equipment appliances shallextend at least 10 ft (3 m) higher than any portion of any build-ing within 25 ft (7.6 m). [ROP 54/Z223.1–101]

10.5.2.3 A chimney shall extend at least 5 ft (1.5 m) above thehighest connected equipment appliance draft hood outlet or fluecollar. [ROP 54/Z223.1–101]

[10.5.2.4 through 10.5.3 unchanged]

10.5.3.1 The effective area of a chimney venting system servinglisted gas appliances with draft hoods, Category I appliances, andother appliances listed for use with Type B vents shall be in ac-

cordance with one of the following methods: [ROP54/Z223.1–101]

[(1) through (5) unchanged]

10.5.3.2 Where an incinerator is vented by a chimney serving othergas utilization equipment appliances, the gas input to the incinera-tor shall not be included in calculating chimney size, provided thechimney flue diameter is not less than 1 in. (25 mm) larger inequivalent diameter than the diameter of the incinerator flue outlet.[ROP 54/Z223.1–101]

Figure 10.5.2.1 Typical Termination Locations for Chimneysand Single-Wall Metal Pipes Serving Residential-Type andLow-Heat Equipment Appliances. [ROP 54/Z223.1–101]

[Figure unchanged]

[10.5.4 through 10.5.4.1 unchanged]

10.5.4.2 Chimneys shall be lined in accordance with NFPA 211,Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances.

Exception: Existing chimneys shall be permitted to have theiruse continued when an appliance is replaced by an appliance ofsimilar type, input rating, and efficiency. [ROP 54/Z223.1–106]

[10.5.4.3 unchanged]

10.5.4.4 When inspection reveals that an existing chimney is notsafe for the intended application, it shall be repaired, rebuilt,lined, relined, or replaced with a vent or chimney to conform toNFPA 211, Standard for Chimneys, Fireplaces, Vents, and SolidFuel-Burning Appliances, and shall be suitable for the equipmentappliances to be attached. [ROP 54/Z223.1–101]

10.5.5 Chimney Serving Equipment Appliance Burning OtherFuels.

10.5.5.1 Gas utilization equipment An appliance shall not beconnected to a chimney flue serving a separate appliancedesigned to burn solid fuel. [ROP 54/Z223.1–101]

10.5.5.2 Where one chimney serves gas utilization equipmentappliances and equipment burning liquid fuel burningappliances, the equipment appliances shall be connected throughseparate openings or shall be connected through a single openingwhere joined by a suitable fitting located as close as practical tothe chimney. Where two or more openings are provided into onechimney flue, they shall be at different levels. Where the gasutilization equipment appliance is automatically controlled, itshall be equipped with a safety shutoff device. [ROP54/Z223.1–101]

[10.5.5.3 through 10.5.5.4 unchanged]

10.5.6 Support of Chimneys. All portions of chimneys shall besupported for the design and weight of the materials employed.Listed factory-built chimneys shall be supported and spaced inaccordance with their listings and the manufacturers’ themanufacturer’s installation instructions. [ROP 54/Z223.1–64a]

[10.5.7 through 10.5.8.1 unchanged]

10.5.8.2 The remaining space surrounding a chimney liner, gasvent, special gas vent, or plastic piping installed within a ma-sonry, metal or factory built chimney, shall not be used to supplycombustion air.

Exception: Direct vent gas-fired appliances designed for instal-lation in a solid fuel burning fireplace where installed in accor-dance with the listing and the manufacturer's installation in-structions. [ROP 54/Z223.1–64a], [ROP 54/Z223.1–101]

10.6 Gas Vents. [See Section 3.3.112.]

10.6.1 Application. The installation of gas vents shall comply withthe following requirements:

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(1) Gas vents shall be installed in accordance with the terms oftheir listings and the manufacturers’ manufacturer’sinstallation instructions. [ROP 54/Z223.1–64a]

[(2) unchanged]

(3) A gas vent passing through a roof shall extend through theroof flashing, roof jack, or roof thimble and be terminatedwith a listed termination cap. [ROP 54/Z223.1–108], [ROP54/Z223.1–109]

(4) Type B or Type L vents shall extend in a generally verticaldirection with offsets not exceeding 45 degrees, except that avent system having not more than one 60-degree offset shallbe permitted. Any angle greater than 45 degrees from thevertical is considered horizontal. The total horizontal distanceof a vent plus the horizontal vent connector serving drafthood-equipped appliances shall not be greater than 75 percentof the vertical height of the vent.

Exception: Systems designed and sized as provided in Chapter13 or in accordance with other approved engineering meth-ods. [ROP 54/Z223.1–110]

[(5) unchanged]

(6) Gas vents installed within masonry chimneys shall be installedin accordance with the terms of their listing and themanufacturers' manufacturer’s installation instructions. Gasvents installed within masonry chimneys shall be identifiedwith a permanent label installed at the point where the vententers the chimney. The label shall contain the followinglanguage: "This gas vent is for appliances that burn gas. Donot connect to solid or liquid-fuel-burning appliances orincinerators." [ROP 54/Z223.1–64a]

10.6.2 Gas Vent Termination. The termination of gas vents shallcomply with the following requirements:

(1) A gas vent shall terminate in accordance with one of thefollowing:

(a) Above the roof surface with a listed cap or listed roof as-sembly. Gas vents 12 in. (300 mm) in size or smaller withlisted caps shall be permitted to be terminated in accor-dance with Figure 10.6.2 and Table 10.6.2 provided theyare at least 8 ft (2.4 m) from a vertical wall or similar ob-struction. All other gas vents shall terminate not less than2 ft (0.6 m) above the highest point where they passthrough the roof and at least 2 ft (0.6 m) higher than anyportion of a building within 10 ft (3.0 m).

(a) Gas vents that are 12 in. (300 mm) or less in size and lo-cated not less than 8 ft (2.4 m) from a vertical wall orsimilar obstruction, shall terminate above the roof in ac-cordance with Figure 10.6.2 and Table 10.6.2.

(b) Gas vents that are over 12 in. (300 mm) in size or are lo-cated less than 8 ft (2.4 m) from a vertical wall or similarobstruction, shall terminate not less than 2 ft (0.6 m)above the highest point where they pass through the roofand not less than 2 ft (0.6 m) above any portion of abuilding within 10 ft (3.0 m) horizontally. [ROP54/Z223.1–108], [ROP 54/Z223.1–109]

(bc) Industrial gas utilization equipment appliances as pro-vided in 10.2.4. [ROP 54/Z223.1–101]

(cd) Direct-vent systems as provided in 10.2.5.

(de) Equipment Appliances with integral vents as provided in10.2.6. [ROP 54/Z223.1–101]

(ef) Mechanical draft systems as provided in 10.3.4.

(fg) Ventilating hoods and exhaust systems as provided in10.3.5.

(2) A Type B or a Type L gas vent shall terminate at least 5 ft (1.5m) in vertical height above the highest connected equipmentappliance draft hood or flue collar. [ROP 54/Z223.1–101]

[(3) through (5) unchanged]

(6) All gas vents shall extend through the roof flashing, roof jack,or roof thimble and terminate with a listed cap or listed roofassembly. [ROP 54/Z223.1–108], [ROP 54/Z223.1–109]

(7) A gas vent shall terminate at least 3 ft (0.9 m) above a forcedair inlet located within 10 ft (3.0 m). [ROP 54/Z223.1–108],[ROP 54/Z223.1–111]

Figure 10.6.2 Gas Vent Termination Locations for Gas VentsWith Listed Caps 12 in. (300 mm) or Less in Size at Least8 ft (2.4 m) from a Vertical Wall. [ROP 54/Z223.1–108]

[Figure unchanged]

Table 10.6.2 Roof Pitch Slope Heights

[Revise the following table entries:]

Roof pitch slope

Flat to 6/12

Over 6/12 to 7/12

[Remainder of Table Unchanged] [ROP 54/Z223.1–112]

10.6.3 Size of Gas Vents. Venting systems shall be sized andconstructed in accordance with Chapter 13 or other approvedengineering methods and the gas vent and gas equipment appliancemanufacturers’ instructions. [ROP 54/Z223.1–101]

[10.6.3.1 unchanged]

10.6.3.2 Type B and Type L vents sized in accordance with item(3) or (4) of section 10.6.3.1 shall extend in a generally verticaldirection with offsets not exceeding 45 degrees, except that avent system having not more than one 60-degree offset shall bepermitted. Any angle greater than 45 degrees from the vertical isconsidered horizontal. The total horizontal distance of a ventplus the horizontal vent connector serving draft hood-equippedappliances shall not be greater than 75 percent of the verticalheight of the vent.Figure [ROP 54/Z223.1–110], [ROP54/Z223.1–107a],

10.6.3.2 Category II, Category III, and Category IVAppliances. The sizing of gas vents for Category II, CategoryIII, and Category IV gas utilization equipment appliances shallbe in accordance with the equipment appliance manufacturers’instructions. [ROP 54/Z223.1–101]

[10.6.3.3 unchanged]

10.6.4 Gas Vents Serving Equipment Appliances on More ThanOne Floor.

10.6.4.1 A single or common gas vent shall be permitted in mul-tistory installations to vent Category I gas utilization equipmentappliances located on more than one floor level, provided theventing system is designed and installed in accordance with ap-proved engineering methods. For the purpose of this section,crawl spaces, basements and attics shall be considered as floorlevels. [ROP 54/Z223.1–101], [ROP 54/Z223.1–114], [ROP54/Z223.1–115]

10.6.4.2 All gas utilization equipment appliances connected tothe common vent shall be located in rooms separated from habit-able occupiable space. Each of these rooms shall have provisionsfor an adequate supply of combustion, ventilation, and dilutionair that is not supplied from habitable occupiable space. [SeeFigure 10.6.4.2.] [ROP 54/Z223.1–101], [ROP 54/Z223.1–116]

[Figure 10.6.4.2 unchanged]

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21

10.6.4.3 The size of the connectors and common segments ofmultistory venting systems for gas utilization equipment appli-ances listed for use with Type B double-wall gas vent shall be inaccordance with Table 13.6, provided: [ROP 54/Z223.1–101]

[(1) unchanged]

(2) The size of the connector for a segment is determined fromits gas utilization equipment the appliance’s gas heat inputrate and available connector rise and shall not be smallerthan the draft hood outlet or flue collar size. [ROP54/Z223.1–101]

(3) The size of the common vertical vent segment, and of theinterconnection tee at the base of that segment, shall bebased on the total gas utilization equipment appliance’s gasheat input rate entering that segment and its available totalheight. [ROP 54/Z223.1–101]

10.6.5 Support of Gas Vents. Gas vents shall be supported andspaced in accordance with their listings and the manufacturers’ themanufacturer’s installation instructions. [ROP 54/Z223.1–64a]

[10.6.6 through 10.7.1 unchanged]

10.7.2* Cold Climate. Uninsulated single-wall metal pipe shall notbe used outdoors in cold climates for venting gas utilization equip-ment appliances in regions where the 99 percent winter designtemperature is below 32 degrees Fahrenheit. [ROP54/Z223.1–101], [ROP 54/Z223.1–118]

10.7.3 Termination. The termination of single-wall metal pipeshall comply with the following requirements:

(1) Single-wall metal pipe shall terminate at least 5 ft (1.5 m) invertical height above the highest connected equipmentappliance draft hood outlet or flue collar. [ROP54/Z223.1–101]

[(2) through (3) unchanged]

10.7.4 Installation with Equipment Appliances Permitted by10.4.1. [ROP 54/Z223.1–101]

10.7.4.1 Single-wall metal pipe shall be used only for runsdirectly from the space in which the gas utilization equipmentappliance is located through the roof or exterior wall to the outerair. A pipe passing through a roof shall extend withoutinterruption through the roof flashing, roof jacket, or roofthimble. [ROP 54/Z223.1–101]

[10.7.4.2 through 10.7.4.5 unchanged]

Table 10.7.4.4 Clearances for Connectors

[Revise the following table entries:]

Equipment Appliance

Listed equipment appliance with draft hoods and equipmentappliance listed for use with Type B Gas Vents

Residential and low-heat equipment appliances other than thoseabove

Medium-heat equipment appliance

[Remainder of table unchanged] [ROP 54/Z223.1–101]

Note: These clearances shall apply unless the listing installationinstructions of an a listed appliance or connector specifies dif-ferent clearances, in which case the listed clearances shall ap-ply. [ROP 54/Z223.1–64a]

10.7.5 Size of Single-Wall Metal Pipe. Single-wall metal pipingshall comply with the following requirements:

(1)* A venting system of a single-wall metal pipe shall be sized inaccordance with one of the following methods and the gas

equipment appliance manufacturer’s instructions: [ROP54/Z223.1–101]

[(1) (a) through 10.9 unchanged]

10.9.1 Provision shall be made to collect and dispose of condensatefrom venting systems serving Category II and Category IV gasutilization equipment appliances and noncategorized condensingappliances in accordance with 10.8.4. [ROP 54/Z223.1–101]

10.9.2 Where local experience indicates that condensation is aproblem, provision shall be made to drain off and dispose of con-densate from venting systems serving Category I and Category IIIgas utilization equipment appliances in accordance with 10.8.4.[ROP 54/Z223.1–101]

10.10 Vent Connectors for Category I Gas Utilization Equip-ment Appliances. [ROP 54/Z223.1–101]

10.10.1 Where Required. A vent connector shall be used to con-nect gas utilization equipment an appliance to a gas vent, chimney,or single-wall metal pipe, except where the gas vent, chimney, orsingle-wall metal pipe is directly connected to the equipmentappliance. [ROP 54/Z223.1–101]

10.10.2 Materials.

10.10.2.1 A vent connector shall be made of noncombustible,corrosion-resistant material capable of withstanding the vent gastemperature produced by the gas utilization equipment applianceand of sufficient thickness to withstand physical damage. [ROP54/Z223.1–101]

10.10.2.2 Where the vent connector used for gas utilizationequipment an appliance having a draft hood or a Category I ap-pliance is located in or passes through an unconditioned area,that portion of the vent connector shall be listed Type B, Type L,or listed vent material having equivalent insulation qualities.[ROP 54/Z223.1–101]

[10.10.2.2 Exception unchanged]

10.10.2.3 Where the vent connector used for gas utilizationequipment an appliance having a draft hood or a Category I ap-pliance is located in or passes through attics and crawl spaces,that portion of the vent connector shall be listed Type B, Type L,or listed vent material having equivalent insulation qualities.[ROP 54/Z223.1–101]

10.10.2.4 Vent connectors for residential-type appliances shallcomply with the following:

(1) Vent Connectors not Installed in Attics, Crawl Spaces,or Other Unconditioned Areas. Vent connectors for listedgas appliances having draft hoods, and for appliances hav-ing draft hoods and equipped with listed conversion burn-ers, and Category I appliances that are not installed in attics,crawl spaces, or other unconditioned areas shall be one ofthe following: [ROP 54/Z223.1–101], [ROP54/Z223.1–121]

[(1)(a) through 10.10.2.4 (2) unchanged]

10.10.2.5 A vent connector for a non-residential low-heat equip-ment appliance shall be a factory-built chimney section or steelpipe having resistance to heat and corrosion equivalent to that forthe appropriate galvanized pipe as specified in Table 10.10.2.5.Factory-built chimney sections shall be joined together in accor-dance with the chimney manufacturer’s instructions. [ROP54/Z223.1–101], [ROP 54/Z223.1–122]

[Table 10.10.2.5 unchanged]

10.10.2.6 Vent connectors for medium-heat equipment appli-ances and commercial and industrial incinerators shall be con-structed of factory-built, medium-heat chimney sections or steel

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of a thickness not less than that specified in Table 10.10.2.6 andshall comply with the following: [ROP 54/Z223.1–101]

(1) A steel vent connector for equipment an appliance with avent gas temperature in excess of 1000°F (538°C) measuredat the entrance to the connector shall be lined with medium-duty fire brick or the equivalent. [ROP 54/Z223.1–101]

[(2) through 10.10.3 unchanged]

Table 10.10.2.6 Minimum Thickness for Steel Vent Connec-tors for Medium-Heat Equipment Appliances and Commer-cial and Industrial Incinerators [ROP 54/Z223.1–101]

[Remainder of table unchanged]

10.10.3.1 A vent connector for gas utilization equipment an ap-pliance with a single draft hood or for a Category I fan-assistedcombustion system appliance shall be sized and installed in ac-cordance with Chapter 13 or other approved engineering meth-ods. [ROP 54/Z223.1–101]

[10.10.3.2 unchanged]

10.10.3.3 Where two or more gas appliances are connected to acommon vent or chimney, each vent connector shall be sized inaccordance with Chapter 13 or other approved engineeringmethods. [ROP 54/Z223.1–101]

[10.10.3.4 unchanged]

10.10.3.5 Where two or more gas appliances are vented througha common vent connector or vent manifold, the common ventconnector or vent manifold shall be located at the highest levelconsistent with available headroom and clearance to combustiblematerial and shall be sized in accordance with Chapter 13 orother approved engineering methods. [ROP 54/Z223.1–101]

[10.10.3.6 unchanged]

10.10.3.7 Where the size of a vent connector is increased toovercome installation limitations and obtain connector capacityequal to the equipment appliance input, the size increase shall bemade at the equipment draft hood outlet. [ROP 54/Z223.1–101]

[10.10.4 through 10.10.9 unchanged]

10.10.9.1 A vent connector shall be as short as practical and thegas utilization equipment appliance located as close as practicalto the chimney or vent. [ROP 54/Z223.1–101]

10.10.9.2* Except as provided for in 10.10.3, tThe maximumhorizontal length of a single-wall connector shall be 75 percentof the height of the chimney or vent, except for engineered sys-tems and in accordance with Chapter 13. The maximum lengthof an individual connector serving multiple appliances, from theappliance outlet to the junction with the common vent or anotherconnector, shall be 100 percent of the height of the chimney orvent. [ROP 54/Z223.1–123]

10.10.9.3 Except as provided for in 10.10.3, tThe maximumhorizontal length of a Type B double-wall connector shall be 100percent of the height of the chimney or vent, except for engi-neered systems and in accordance with Chapter 13. For a chim-ney or vent system serving multiple appliances, tThe maximumlength of an individual connector serving multiple appliances,from the appliance outlet to the junction with the common ventor another connector, shall be 100 percent of the height of thechimney or vent. [ROP 54/Z223.1–123]

[10.10.14 unchanged]

10.10.14.1 A vent connector shall not pass through any ceiling,floor, or fire-resistance rated wall. A single-wall metal pipe con-nector shall not pass through any interior wall.

Exception: Vent connectors made of listed Type B or Type L ventmaterial and serving listed equipment with draft hoods and other

equipment listed for use with Type B gas vents that pass throughwalls or partitions constructed of combustible material shall beinstalled with not less than the listed clearance to combustiblematerial. Single-wall metal pipe connectors shall not passthrough any wall, floor or ceiling except as permitted by sections10.7.4.1 and 10.10.14.2. [ROP 54/Z223.1–124]

[10.10.14.2 unchanged]

10.10.14.3 Vent connectors for medium-heat equipment appli-ances shall not pass through walls or partitions constructed ofcombustible material. [ROP 54/Z223.1–101]

10.11 Vent Connectors for Category II, Category III, and Cate-gory IV Gas Utilization Equipment Appliances.[See Section 10.4.] [ROP 54/Z223.1–101]

10.12 Draft Hoods and Draft Controls.

10.12.1 Equipment Appliances Requiring Draft Hoods. Ventedgas utilization equipment appliances shall be installed with drafthoods.

Exception: Dual oven-type combination ranges, incinerators, di-rect-vent equipment appliances, fan-assisted combustion systemappliances, equipment appliances requiring chimney draft for op-eration, single-firebox boilers equipped with conversion burnerswith inputs greater than 400,000 Btu/hr (117 kW), equipment ap-pliances equipped with blast, power, or pressure burners that arenot listed for use with draft hoods, and equipment appliances de-signed for forced venting. [ROP 54/Z223.1–101]

10.12.2 Installation. A draft hood supplied with or forming a partof listed vented gas utilization equipment appliance shall be in-stalled without alteration, exactly as furnished and specified by theequipment appliance manufacturer. [ROP 54/Z223.1–101]

10.12.2.1 If a draft hood is not supplied by the equipment ap-pliance manufacturer where one is required, a draft hood shallbe installed, be of a listed or approved type, and, in the absenceof other instructions, be of the same size as the equipment ap-pliance flue collar. Where a draft hood is required with a con-version burner, it shall be of a listed or approved type. [ROP54/Z223.1–101]

10.12.2.2 Where it is determined that a draft hood of special de-sign is needed or preferable for a particular installation, the in-stallation shall be in accordance with the recommendations ofthe equipment appliance manufacturer and shall be with the ap-proval of the authority having jurisdiction. [ROP54/Z223.1–101]

10.12.3 Draft Control Devices. Where a draft control device ispart of the gas utilization equipment appliance or is supplied by theequipment appliance manufacturer, it shall be installed in accor-dance with the manufacturer’s instructions. In the absence of manu-facturer’s instructions, the device shall be attached to the flue collarof the equipment appliance or as near to the equipment appliance aspractical. [ROP 54/Z223.1–101]

10.12.4* Additional Devices. Gas utilization equipment Appli-ances (except incinerators) requiring controlled chimney draft shallbe permitted to be equipped with a listed double-acting barometricdraft regulators installed and adjusted in accordance with the manu-facturer’s instructions. [ROP 54/Z223.1–101]

10.12.5 Location. Draft hoods and barometric draft regulatorsshall be installed in the same room or enclosure as the equipmentappliance in such a manner as to prevent any difference in pressurebetween the hood or regulator and the combustion air supply.[ROP 54/Z223.1–101]

10.12.6 Positioning. Draft hoods and draft regulators shall be in-stalled in the position for which they were designed with reference

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to the horizontal and vertical planes and shall be located so that therelief opening is not obstructed by any part of the equipment appli-ance or adjacent construction. The equipment appliance and itsdraft hood shall be located so that the relief opening is accessiblefor checking vent operation. [ROP 54/Z223.1–101]

10.12.7 Clearance. A draft hood shall be located so that its reliefopening is not less than 6 in. (150 mm) from any surface exceptthat of the equipment appliance it serves and the venting system towhich the draft hood is connected. Where a greater or lesser clear-ance is indicated on the equipment appliance label, the clearanceshall not be less than that specified on the label. Such clearancesshall not be reduced. [ROP 54/Z223.1–101]

10.13 Manually Operated Dampers. A manually operated dampershall not be placed in any equipment appliance vent connector.Fixed baffles shall not be classified as manually operated dampers.[ROP 54/Z223.1–101]

[10.14 unchanged]

10.15 Obstructions. Devices that retard the flow of vent gasesshall not be installed in a vent connector, chimney, or vent. Thefollowing shall not be considered as obstructions:

(1) Draft regulators and safety controls specifically listed for in-stallation in venting systems and installed in accordance withthe terms of their listing manufacturer’s installation instruc-tions. [ROP 54/Z223.1–64a]

[(2) unchanged]

(3) Listed heat reclaimers and automatically operated vent damp-ers installed in accordance with the terms of their listingmanufacturer’s installation instructions. [ROP54/Z223.1–64a]

[(4) unchanged]

(5) Approved economizers, heat reclaimers, and recuperators in-stalled in venting systems of equipment appliances not re-quired to be equipped with draft hoods, provided the gas utili-zation equipment appliance manufacturer’s instructions coverthe installation of such a device in the venting system and per-formance in accordance with 10.3.1 and 10.3.2 is obtained.[ROP 54/Z223.1–101]

Chapter 11 Procedures to Be Followed to Place Equipment Ap-pliance in Operation [ROP 54/Z223.1–126]

[Chapter 11 to be relocated to follow Chapter 9].[R O P54/Z223.1–127]11.1 Adjusting the Burner Input.

11.1.1* Adjusting Input. The input shall be adjusted to the properrate in accordance with the equipment manufacturers’ appliancemanufacturer’s instructions. The input rate can be adjusted by ei-ther changing the size of a fixed orifice, changing the adjustment ofan adjustable orifice, or readjusting the appliance’s gas pressureregulator outlet pressure (where a regulator is provided in the ap-pliance). Input rate can be determined by either:

11.1.1 (1)* Checking burner input by using a gas meter.

11.1.1 (2)* Checking burner input by using orifice pressure dropand orifice size.

Overfiring shall be prohibited. [See Table 11.1.1.] [ROP54/Z223.1–126], [ROP 54/Z223.1–128]

11.1.2 High Altitude. Gas input rRatings of gas utilization equip-ment appliances are based on sea level operation and shall not be

changed for operation at elevations up to 2000 ft (600 m). For op-eration at elevations above 2000 ft (600 m), equipment applianceinput ratings shall be reduced in accordance with one of the fol-lowing methods: [ROP 54/Z223.1–126], [ROP 54/Z223.1–128]

(1) At the rate of 4 percent for each 1000 ft (300 m) above sealevel before selecting appropriately sized equipment appli-ance. [ROP 54/Z223.1–126]

(2) As permitted by the authority having jurisdiction.

(3) Listed appliances derated in accordance with the terms of thelisting manufacturer’s installation instructions shall be per-mitted. [ROP 54/Z223.1–64a]

11.2* Primary Air Adjustment. The primary air for injection(Bunsen)-type burners shall be adjusted for proper flame charac-teristics in accordance with the appliance manufacturers’ instruc-tions. After setting the primary air, the adjustment means shall besecured in position. [ROP 54/Z223.1–126]

11.3 Safety Shutoff Devices. Where a safety shutoff device is pro-vided, it shall be checked for proper operation and adjustment inaccordance with the appliance manufacturer’s instructions. Wherethe device does not function properly to turn off the gas supply inthe event of pilot outage or other improper operation, it shall beproperly serviced or replaced with a new equipment device. [ROP54/Z223.1–126], [ROP 54/Z223.1–128]

11.4 Automatic Ignition. Gas utilization equipment Appliancessupplied with means for automatic ignition shall be checked forproper operation. If necessary, proper adjustments shall be made.[ROP 54/Z223.1–126]

11.5 Protective Devices. All protective devices furnished with thegas utilization equipment appliance, such as a limit control, fancontrol to blower, temperature and pressure relief valve, low-watercutoff device, manual operating features, shall be checked forproper operation. [ROP 54/Z223.1–126]

11.6* Checking the Draft. Vent-connected gas utilization equip-ment appliances shall be operated for several minutes and checkedto see that the combustion products are going up the chimney orgas vent properly by passing a lighted match or taper around theedge of the relief opening of the draft hood. Where the chimney orgas vent is drawing properly, the match flame will be drawn intothe draft hood. Where not, the combustion products will tend toextinguish this flame. Where the combustion products are escapingfrom the relief opening of the draft hood, the equipment applianceshall not be operated until proper adjustments or repairs are madeto provide adequate draft through the chimney or gas vent. [ROP54/Z223.1–126]

11.7 Operating Instructions. Operating instructions shall be fur-nished and shall be left in a prominent position near the equipmentappliance for the use of the consumer. [ROP 54/Z223.1–126]

[Delete Table 11.1.1 and Table 11.1.1 (Continued) in their entirety][ROP 54/Z223.1–128]

Chapter 12 Pipe Sizing

[Chapter 12 to be relocated to follow Chapter 5] [R O P54/Z223.1–127]

[12.1 through 12.3.2 unchanged]

[Table 12.3.2 unchanged]

NFPA 54/Z223.1 – A05 ROP

24

[Delete Table 12.1 and Table 12.2 in their entirety] [ROP 54/Z223.1–131]

Gas NaturalInlet pressure Less than 2 psi

Pressure Drop 0.3 in. WCTable 12.1 Schedule 40 Metallic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 1 _ 11/2 2 21/2 3 4 5 6 8 10 12Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938Length (ft) Capacity in Cubic Feet of Gas per Hour

10 131 273 514 1,060 1,580 3,050 4,860 8,580 17,500 31,700 51,300 105,000 191,000 303,00020 90 188 353 726 1,090 2,090 3,340 5,900 12,000 21,800 35,300 72,400 132,000 208,00030 72 151 284 583 873 1,680 2,680 4,740 9,660 17,500 28,300 58,200 106,000 167,00040 62 129 243 499 747 1,440 2,290 4,050 8,270 15,000 24,200 49,800 90,400 143,00050 55 114 215 442 662 1,280 2,030 3,590 7,330 13,300 21,500 44,100 80,100 127,00060 50 104 195 400 600 1,160 1,840 3,260 6,640 12,000 19,500 40,000 72,600 115,00070 46 95 179 368 552 1,060 1,690 3,000 6,110 11,100 17,900 36,800 66,800 106,00080 42 89 167 343 514 989 1,580 2,790 5,680 10,300 16,700 34,200 62,100 98,40090 40 83 157 322 482 928 1,480 2,610 5,330 9,650 15,600 32,100 58,300 92,300

100 38 79 148 304 455 877 1,400 2,470 5,040 9,110 14,800 30,300 55,100 87,200125 33 70 131 269 403 777 1,240 2,190 4,460 8,080 13,100 26,900 48,800 77,300150 30 63 119 244 366 704 1,120 1,980 4,050 7,320 11,900 24,300 44,200 70,000175 28 58 109 224 336 648 1,030 1,820 3,720 6,730 10,900 22,400 40,700 64,400200 26 54 102 209 313 602 960 1,700 3,460 6,260 10,100 20,800 37,900 59,900250 23 48 90 185 277 534 851 1,500 3,070 5,550 8,990 18,500 33,500 53,100300 21 43 82 168 251 484 771 1,360 2,780 5,030 8,150 16,700 30,400 48,100350 19 40 75 154 231 445 709 1,250 2,560 4,630 7,490 15,400 28,000 44,300400 18 37 70 143 215 414 660 1,170 2,380 4,310 6,970 14,300 26,000 41,200450 17 35 66 135 202 389 619 1,090 2,230 4,040 6,540 13,400 24,400 38,600500 16 33 62 127 191 367 585 1,030 2,110 3,820 6,180 12,700 23,100 36,500550 15 31 59 121 181 349 556 982 2,000 3,620 5,870 12,100 21,900 34,700600 14 30 56 115 173 333 530 937 1,910 3,460 5,600 11,500 20,900 33,100650 14 29 54 110 165 318 508 897 1,830 3,310 5,360 11,000 20,000 31,700700 13 27 52 106 159 306 488 862 1,760 3,180 5,150 10,600 19,200 30,400750 13 26 50 102 153 295 470 830 1,690 3,060 4,960 10,200 18,500 29,300800 12 26 48 99 148 285 454 802 1,640 2,960 4,790 9,840 17,900 28,300850 12 25 46 95 143 275 439 776 1,580 2,860 4,640 9,530 17,300 27,400900 11 24 45 93 139 267 426 752 1,530 2,780 4,500 9,240 16,800 26,600950 11 23 44 90 135 259 413 731 1,490 2,700 4,370 8,970 16,300 25,800

1,000 11 23 43 87 131 252 402 711 1,450 2,620 4,250 8,720 15,800 25,1001,100 10 21 40 83 124 240 382 675 1,380 2,490 4,030 8,290 15,100 23,8001,200 NA 20 39 79 119 229 364 644 1,310 2,380 3,850 7,910 14,400 22,7001,300 NA 20 37 76 114 219 349 617 1,260 2,280 3,680 7,570 13,700 21,8001,400 NA 19 35 73 109 210 335 592 1,210 2,190 3,540 7,270 13,200 20,9001,500 NA 18 34 70 105 203 323 571 1,160 2,110 3,410 7,010 12,700 20,1001,600 NA 18 33 68 102 196 312 551 1,120 2,030 3,290 6,770 12,300 19,5001,700 NA 17 32 66 98 189 302 533 1,090 1,970 3,190 6,550 11,900 18,8001,800 NA 16 31 64 95 184 293 517 1,050 1,910 3,090 6,350 11,500 18,3001,900 NA 16 30 62 93 178 284 502 1,020 1,850 3,000 6,170 11,200 17,7002,000 NA 16 29 60 90 173 276 488 1,000 1,800 2,920 6,000 10,900 17,200

NA means a flow of less than 10 cfh [ROP 54/Z223.1–131]

Gas NaturalInlet pressure Less than 2 psi

Pressure Drop 0.5 in. WCTable 12.2 Schedule 40 Metallic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4 5 6 8 10 12Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026 5.047 6.065 7.981 10.020 11.938Length (ft) Capacity in Cubic Feet of Gas per Hour

10 172 360 678 1,390 2,090 4,020 6,400 11,300 23,100 41,800 67,600 139,000 252,000 399,00020 118 247 466 957 1,430 2,760 4,400 7,780 15,900 28,700 46,500 95,500 173,000 275,00030 95 199 374 768 1,150 2,220 3,530 6,250 12,700 23,000 37,300 76,700 139,000 220,00040 81 170 320 657 985 1,900 3,020 5,350 10,900 19,700 31,900 65,600 119,000 189,00050 72 151 284 583 873 1,680 2,680 4,740 9,660 17,500 28,300 58,200 106,000 167,00060 65 137 257 528 791 1,520 2,430 4,290 8,760 15,800 25,600 52,700 95,700 152,00070 60 126 237 486 728 1,400 2,230 3,950 8,050 14,600 23,600 48,500 88,100 139,00080 56 117 220 452 677 1,300 2,080 3,670 7,490 13,600 22,000 45,100 81,900 130,00090 52 110 207 424 635 1,220 1,950 3,450 7,030 12,700 20,600 42,300 76,900 122,000

NFPA 54/Z223.1 – A05 ROP

25

100 50 104 195 400 600 1,160 1,840 3,260 6,640 12,000 19,500 40,000 72,600 115,000125 44 92 173 355 532 1,020 1,630 2,890 5,890 10,600 17,200 35,400 64,300 102,000150 40 83 157 322 482 928 1,480 2,610 5,330 9,650 15,600 32,100 58,300 92,300175 37 77 144 296 443 854 1,360 2,410 4,910 8,880 14,400 29,500 53,600 84,900200 34 71 134 275 412 794 1,270 2,240 4,560 8,260 13,400 27,500 49,900 79,000250 30 63 119 244 366 704 1,120 1,980 4,050 7,320 11,900 24,300 44,200 70,000300 27 57 108 221 331 638 1,020 1,800 3,670 6,630 10,700 22,100 40,100 63,400350 25 53 99 203 305 587 935 1,650 3,370 6,100 9,880 20,300 36,900 58,400400 23 49 92 189 283 546 870 1,540 3,140 5,680 9,190 18,900 34,300 54,300450 22 46 86 177 266 512 816 1,440 2,940 5,330 8,620 17,700 32,200 50,900500 21 43 82 168 251 484 771 1,360 2,780 5,030 8,150 16,700 30,400 48,100550 20 41 78 159 239 459 732 1,290 2,640 4,780 7,740 15,900 28,900 45,700600 19 39 74 152 228 438 699 1,240 2,520 4,560 7,380 15,200 27,500 43,600650 18 38 71 145 218 420 669 1,180 2,410 4,360 7,070 14,500 26,400 41,800700 17 36 68 140 209 403 643 1,140 2,320 4,190 6,790 14,000 25,300 40,100750 17 35 66 135 202 389 619 1,090 2,230 4,040 6,540 13,400 24,400 38,600800 16 34 63 130 195 375 598 1,060 2,160 3,900 6,320 13,000 23,600 37,300850 16 33 61 126 189 363 579 1,020 2,090 3,780 6,110 12,600 22,800 36,100900 15 32 59 122 183 352 561 992 2,020 3,660 5,930 12,200 22,100 35,000950 15 31 58 118 178 342 545 963 1,960 3,550 5,760 11,800 21,500 34,000

1,000 14 30 56 115 173 333 530 937 1,910 3,460 5,600 11,500 20,900 33,1001,100 14 28 53 109 164 316 503 890 1,810 3,280 5,320 10,900 19,800 31,4001,200 13 27 51 104 156 301 480 849 1,730 3,130 5,070 10,400 18,900 30,0001,300 12 26 49 100 150 289 460 813 1,660 3,000 4,860 9,980 18,100 28,7001,400 12 25 47 96 144 277 442 781 1,590 2,880 4,670 9,590 17,400 27,6001,500 11 24 45 93 139 267 426 752 1,530 2,780 4,500 9,240 16,800 26,6001,600 11 23 44 89 134 258 411 727 1,480 2,680 4,340 8,920 16,200 25,6001,700 11 22 42 86 130 250 398 703 1,430 2,590 4,200 8,630 15,700 24,8001,800 10 22 41 84 126 242 386 682 1,390 2,520 4,070 8,370 15,200 24,1001,900 10 21 40 81 122 235 375 662 1,350 2,440 3,960 8,130 14,800 23,4002,000 NA 20 39 79 119 229 364 644 1,310 2,380 3,850 7,910 14,400 22,700

NA means a flow of less than 10 cfh [ROP 54/Z223.1–131]

Gas NaturalInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.3 Schedule 40 Metallic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

_ 1 11/4 11/2 2 21/2 3 4Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 1,506 3,041 5,561 11,415 17,106 32,944 52,505 92,819 189,32620 1,065 2,150 3,932 8,072 12,096 23,295 37,127 65,633 133,87330 869 1,756 3,211 6,591 9,876 19,020 30,314 53,589 109,30740 753 1,521 2,781 5,708 8,553 16,472 26,253 46,410 94,66350 673 1,360 2,487 5,105 7,650 14,733 23,481 41,510 84,66960 615 1,241 2,270 4,660 6,983 13,449 21,435 37,893 77,29270 569 1,150 2,102 4,315 6,465 12,452 19,845 35,082 71,55880 532 1,075 1,966 4,036 6,048 11,647 18,563 32,817 66,93790 502 1,014 1,854 3,805 5,702 10,981 17,502 30,940 63,109

100 462 934 1,708 3,508 5,257 10,125 16,138 28,530 58,194125 414 836 1,528 3,138 4,702 9,056 14,434 25,518 52,050150 372 751 1,373 2,817 4,222 8,130 12,960 22,911 46,732175 344 695 1,271 2,608 3,909 7,527 11,999 21,211 43,265200 318 642 1,174 2,413 3,613 6,959 11,093 19,608 39,99710 1,510 3,040 5,560 11,400 17,100 32,900 52,500 92,800 189,00020 1,070 2,150 3,930 8,070 12,100 23,300 37,100 65,600 134,00030 869 1,760 3,210 6,590 9,880 19,000 30,300 53,600 109,00040 753 1,520 2,780 5,710 8,550 16,500 26,300 46,400 94,70050 673 1,360 2,490 5,110 7,650 14,700 23,500 41,500 84,70060 615 1,240 2,270 4,660 6,980 13,500 21,400 37,900 77,30070 569 1,150 2,100 4,320 6,470 12,500 19,900 35,100 71,60080 532 1,080 1,970 4,040 6,050 11,700 18,600 32,800 67,00090 502 1,010 1,850 3,810 5,700 11,000 17,500 30,900 63,100

100 462 934 1,710 3,510 5,260 10,100 16,100 28,500 58,200125 414 836 1,530 3,140 4,700 9,060 14,400 25,500 52,100150 372 751 1,370 2,820 4,220 8,130 13,000 22,900 46,700175 344 695 1,270 2,601 3,910 7,530 12,000 21,200 43,300200 318 642 1,170 2,410 3,610 6,960 11,100 19,600 40,000250 279 583 1,040 2,140 3,210 6,180 9,850 17,400 35,500300 253 528 945 1,940 2,910 5,600 8,920 15,800 32,200

NFPA 54/Z223.1 – A05 ROP

26

350 232 486 869 1,790 2,670 5,150 8,210 14,500 29,600400 216 452 809 1,660 2,490 4,790 7,640 13,500 27,500450 203 424 759 1,560 2,330 4,500 7,170 12,700 25,800500 192 401 717 1,470 2,210 4,250 6,770 12,000 24,400550 182 381 681 1,400 2,090 4,030 6,430 11,400 23,200600 174 363 650 1,330 2,000 3,850 6,130 10,800 22,100650 166 348 622 1,280 1,910 3,680 5,870 10,400 21,200700 160 334 598 1,230 1,840 3,540 5,640 9,970 20,300750 154 322 576 1,180 1,770 3,410 5,440 9,610 19,600800 149 311 556 1,140 1,710 3,290 5,250 9,280 18,900850 144 301 538 1,100 1,650 3,190 5,080 8,980 18,300900 139 292 522 1,070 1,600 3,090 4,930 8,710 17,800950 135 283 507 1,040 1,560 3,000 4,780 8,460 17,200

1000 132 275 493 1,010 1,520 2,920 4,650 8,220 16,8001100 125 262 468 960 1,440 2,770 4,420 7,810 15,9001200 119 250 446 917 1,370 2,640 4,220 7,450 15,2001300 114 239 427 878 1,320 2,530 4,040 7,140 14,6001400 110 230 411 843 1,260 2,430 3,880 6,860 14,0001500 106 221 396 812 1,220 2,340 3,740 6,600 13,5001600 102 214 382 784 1,180 2,260 3,610 6,380 13,0001700 99 207 370 759 1,140 2,190 3,490 6,170 12,6001800 96 200 358 736 1,100 2,120 3,390 5,980 12,2001900 93 195 348 715 1,070 2,060 3,290 5,810 11,9002000 91 189 339 695 1,040 2,010 3,200 5,650 11,500

[ROP 54/Z223.1–131]

Gas NaturalInlet pressure 3.0 psi

Pressure Drop 2.0 psiTable 12.4 Schedule 40 Metallic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal: 1/2

3/4 1 11/4 11/2 2 21/2 3 4Actual ID: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Capacity in Cubic Feet of Gas per Hour10 2,350 4,920 9,270 19,000 28,500 54,900 87,500 155,000 316,00020 1,620 3,380 6,370 13,100 19,600 37,700 60,100 106,000 217,00030 1,300 2,720 5,110 10,500 15,700 30,300 48,300 85,400 174,00040 1,110 2,320 4,380 8,990 13,500 25,900 41,300 73,100 149,00050 985 2,060 3,880 7,970 11,900 23,000 36,600 64,800 132,00060 892 1,870 3,520 7,220 10,800 20,800 33,200 58,700 120,00070 821 1,720 3,230 6,640 9,950 19,200 30,500 54,000 110,00080 764 1,600 3,010 6,180 9,260 17,800 28,400 50,200 102,00090 717 1,500 2,820 5,800 8,680 16,700 26,700 47,100 96,100

100 677 1,420 2,670 5,470 8,200 15,800 25,200 44,500 90,800125 600 1,250 2,360 4,850 7,270 14,000 22,300 39,500 80,500150 544 1,140 2,140 4,400 6,590 12,700 20,200 35,700 72,900175 500 1,050 1,970 4,040 6,060 11,700 18,600 32,900 67,100200 465 973 1,830 3,760 5,640 10,900 17,300 30,600 62,400250 412 862 1,620 3,330 5,000 9,620 15,300 27,100 55,300300 374 781 1,470 3,020 4,530 8,720 13,900 24,600 50,100350 344 719 1,350 2,780 4,170 8,020 12,800 22,600 46,100400 320 669 1,260 2,590 3,870 7,460 11,900 21,000 42,900450 300 627 1,180 2,430 3,640 7,000 11,200 19,700 40,200500 283 593 1,120 2,290 3,430 6,610 10,500 18,600 38,000550 257 537 1,010 2,080 3,110 5,990 9,550 16,900 34,400600 236 494 931 1,910 2,860 5,510 8,790 15,500 31,700650 220 460 866 1,780 2,660 5,130 8,170 14,500 29,500700 206 431 812 1,670 2,500 4,810 7,670 13,600 27,700750 195 407 767 1,580 2,360 4,550 7,250 12,800 26,100800 173 361 680 1,400 2,090 4,030 6,420 11,400 23,200850 156 327 616 1,270 1,900 3,650 5,820 10,300 21,000900 144 301 567 1,160 1,740 3,360 5,350 9,460 19,300950 134 280 527 1,080 1,620 3,120 4,980 8,800 18,000

1000 2,350 4,920 9,270 19,000 28,500 54,900 87,500 155,000 316,0001100 1,620 3,380 6,370 13,100 19,600 37,700 60,100 106,000 217,0001200 1,300 2,720 5,110 10,500 15,700 30,300 48,300 85,400 174,0001300 1,110 2,320 4,380 8,990 13,500 25,900 41,300 73,100 149,0001400 985 2,060 3,880 7,970 11,900 23,000 36,600 64,800 132,0001500 892 1,870 3,520 7,220 10,800 20,800 33,200 58,700 120,0001600 821 1,720 3,230 6,640 9,950 19,200 30,500 54,000 110,0001700 764 1,600 3,010 6,180 9,260 17,800 28,400 50,200 102,000

NFPA 54/Z223.1 – A05 ROP

27

1800 717 1,500 2,820 5,800 8,680 16,700 26,700 47,100 96,1001900 677 1,420 2,670 5,470 8,200 15,800 25,200 44,500 90,8002000 600 1,250 2,360 4,850 7,270 14,000 22,300 39,500 80,500

[ROP 54/Z223.1–132]

Schedule 40 Metallic Pipe Gas NaturalInlet pressure 5.0 psi

Pressure Drop 3.5 psiTable 12.4 12.5

Specific Gravity 0.60

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 3,185 6,434 11,766 24,161 36,206 69,727 111,133 196,468 400,73220 2,252 4,550 8,320 17,084 25,602 49,305 78,583 138,924 283,36130 1,839 3,715 6,793 13,949 20,904 40,257 64,162 113,431 231,36340 1,593 3,217 5,883 12,080 18,103 34,864 55,566 98,234 200,36650 1,425 2,878 5,262 10,805 16,192 31,183 49,700 87,863 179,21360 1,301 2,627 4,804 9,864 14,781 28,466 45,370 80,208 163,59870 1,204 2,432 4,447 9,132 13,685 26,354 42,004 74,258 151,46380 1,153 2,330 4,260 8,542 12,801 24,652 39,291 69,462 141,68090 1,062 2,145 3,922 8,054 12,069 23,242 37,044 65,489 133,577

100 979 1,978 3,617 7,427 11,128 21,433 34,159 60,387 123,173125 876 1,769 3,235 6,643 9,953 19,170 30,553 54,012 110,169150 786 1,589 2,905 5,964 8,937 17,211 27,431 48,494 98,911175 728 1,471 2,690 5,522 8,274 15,934 25,396 44,897 91,574200 673 1,360 2,487 5,104 7,649 14,729 23,478 41,504 84,65610 3,190 6,430 11,800 24,200 36,200 69,700 111,000 196,000 401,00020 2,250 4,550 8,320 17,100 25,600 49,300 78,600 139,000 283,00030 1,840 3,720 6,790 14,000 20,900 40,300 64,200 113,000 231,00040 1,590 3,220 5,880 12,100 18,100 34,900 55,600 98,200 200,00050 1,430 2,880 5,260 10,800 16,200 31,200 49,700 87,900 179,00060 1,300 2,630 4,800 9,860 14,800 28,500 45,400 80,200 164,00070 1,200 2,430 4,450 9,130 13,700 26,400 42,000 74,300 151,00080 1,150 2,330 4,260 8,540 12,800 24,700 39,300 69,500 142,00090 1,060 2,150 3,920 8,050 12,100 23,200 37,000 65,500 134,000

100 979 1,980 3,620 7,430 11,100 21,400 34,200 60,400 123,000125 876 1,770 3,240 6,640 9,950 19,200 30,600 54,000 110,000150 786 1,590 2,910 5,960 8,940 17,200 27,400 48,500 98,900175 728 1,470 2,690 5,520 8,270 15,900 25,400 44,900 91,600200 673 1,360 2,490 5,100 7,650 14,700 23,500 41,500 84,700250 558 1,170 2,200 4,510 6,760 13,000 20,800 36,700 74,900300 506 1,060 1,990 4,090 6,130 11,800 18,800 33,300 67,800350 465 973 1,830 3,760 5,640 10,900 17,300 30,600 62,400400 433 905 1,710 3,500 5,250 10,100 16,100 28,500 58,100450 406 849 1,600 3,290 4,920 9,480 15,100 26,700 54,500500 384 802 1,510 3,100 4,650 8,950 14,300 25,200 51,500550 364 762 1,440 2,950 4,420 8,500 13,600 24,000 48,900600 348 727 1,370 2,810 4,210 8,110 12,900 22,900 46,600650 333 696 1,310 2,690 4,030 7,770 12,400 21,900 44,600700 320 669 1,260 2,590 3,880 7,460 11,900 21,000 42,900750 308 644 1,210 2,490 3,730 7,190 11,500 20,300 41,300800 298 622 1,170 2,410 3,610 6,940 11,100 19,600 39,900850 288 602 1,130 2,330 3,490 6,720 10,700 18,900 38,600900 279 584 1,100 2,260 3,380 6,520 10,400 18,400 37,400950 271 567 1,070 2,190 3,290 6,330 10,100 17,800 36,400

1,000 264 551 1,040 2,130 3,200 6,150 9,810 17,300 35,4001,100 250 524 987 2,030 3,030 5,840 9,320 16,500 33,6001,200 239 500 941 1,930 2,900 5,580 8,890 15,700 32,0001,300 229 478 901 1,850 2,770 5,340 8,510 15,000 30,7001,400 220 460 866 1,780 2,660 5,130 8,180 14,500 29,5001,500 212 443 834 1,710 2,570 4,940 7,880 13,900 28,4001,600 205 428 806 1,650 2,480 4,770 7,610 13,400 27,4001,700 198 414 780 1,600 2,400 4,620 7,360 13,000 26,5001,800 192 401 756 1,550 2,330 4,480 7,140 12,600 25,7001,900 186 390 734 1,510 2,260 4,350 6,930 12,300 25,0002,000 181 379 714 1,470 2,200 4,230 6,740 11,900 24,300

[ROP 54/Z223.1–131]

[Delete Table 12.5 and Table 12.6 in their entirety] [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

28

Gas Natural

Inlet pressure0.5 psi or lessLess than 2 psi

Pressure Drop 0.3 in. WCTable 12.76 Semi-Rigid Copper Tubing

Specific Gravity 0.60

Tube Size (in.)K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2Nominal:

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 20 42 85 148 210 448 806 1,271 2,646 4,68220 14 29 58 102 144 308 554 873 1,819 3,21830 11 23 47 82 116 247 445 701 1,461 2,58440 10 20 40 70 99 211 381 600 1,250 2,21250 8.4 17 35 62 88 187 337 532 1,108 1,96060 7.6 16 32 56 79 170 306 482 1,004 1,77670 7.0 14 29 52 73 156 281 443 924 1,63480 6.5 13 27 48 68 145 262 413 859 1,52090 6.1 13 26 45 64 136 245 387 806 1,426

100 5.8 12 24 43 60 129 232 366 761 1,347125 5.1 11 22 38 53 114 206 324 675 1,194150 4.7 10 20 34 48 103 186 294 612 1,082175 4.3 8.8 18 31 45 95 171 270 563 995200 4.0 8.2 17 29 41 89 159 251 523 926250 3.5 7.3 15 26 37 78 141 223 464 821300 3.2 6.6 13 23 33 71 128 202 420 74410 20 42 85 148 210 448 806 1,270 2,65020 14 29 58 102 144 308 554 873 1,82030 11 23 47 82 116 247 445 701 1,46040 10 20 40 70 99 211 381 600 1,25050 NA 17 35 62 88 187 337 532 1,11060 NA 16 32 56 79 170 306 482 1,00070 NA 14 29 52 73 156 281 443 92480 NA 13 27 48 68 145 262 413 85990 NA 13 26 45 64 136 245 387 806

100 NA 12 24 43 60 129 232 366 761125 NA 11 22 38 53 114 206 324 675150 NA 10 20 34 48 103 186 294 612175 NA NA 18 31 45 95 171 270 563200 NA NA 17 29 41 89 159 251 523250 NA NA 15 26 37 78 141 223 464300 NA NA 13 23 33 71 128 202 420350 NA NA 12 22 31 65 118 186 387400 NA NA 11 20 28 61 110 173 360450 NA NA 11 19 27 57 103 162 338500 NA NA 10 18 25 54 97 153 319550 NA NA NA 17 24 51 92 145 303600 NA NA NA 16 23 49 88 139 289650 NA NA NA 15 22 47 84 133 277700 NA NA NA 15 21 45 81 128 266750 NA NA NA 14 20 43 78 123 256800 NA NA NA 14 20 42 75 119 247850 NA NA NA 13 19 40 73 115 239900 NA NA NA 13 18 39 71 111 232950 NA NA NA 13 18 38 69 108 225

1,000 NA NA NA 12 17 37 67 105 2191,100 NA NA NA 12 16 35 63 100 2081,200 NA NA NA 11 16 34 60 95 1991,300 NA NA NA 11 15 32 58 91 1901,400 NA NA NA 10 14 31 56 88 1831,500 NA NA NA NA 14 30 54 84 1761,600 NA NA NA NA 13 29 52 82 1701,700 NA NA NA NA 13 28 50 79 1641,800 NA NA NA NA 13 27 49 77 1591,900 NA NA NA NA 12 26 47 74 1552,000 NA NA NA NA 12 25 46 72 151

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of thecopper tubing products.NA means a flow of less than 10 cfh. [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

29

Gas Natural

Inlet pressure0.5 psi or lessLess than 2 psi

Pressure Drop 0.5 in. WCTable 12.87 Semi-Rigid Copper Tubing

Specific Gravity 0.60

Tube Size (in.)K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2Nominal:

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 27 55 111 195 276 590 1,062 1,675 3,489 6,17320 18 38 77 134 190 406 730 1,151 2,398 4,24230 15 30 61 107 152 326 586 925 1,926 3,40740 13 26 53 92 131 279 502 791 1,648 2,91650 11 23 47 82 116 247 445 701 1,461 2,58460 10 21 42 74 105 224 403 635 1,323 2,34170 9.3 19 39 68 96 206 371 585 1,218 2,15480 8.6 18 36 63 90 192 345 544 1,133 2,00490 8.1 17 34 59 84 180 324 510 1,063 1,880

100 7.6 16 32 56 79 170 306 482 1,004 1,776125 6.8 14 28 50 70 151 271 427 890 1,574150 6.1 13 26 45 64 136 245 387 806 1,426175 5.6 12 24 41 59 125 226 356 742 1,312200 5.2 11 22 39 55 117 210 331 690 1,221250 4.7 10 20 34 48 103 186 294 612 1,082300 4.2 8.7 18 31 44 94 169 266 554 98010 27 55 111 195 276 590 1,060 1,680 3,49020 18 38 77 134 190 406 730 1,150 2,40030 15 30 61 107 152 326 586 925 1,93040 13 26 53 92 131 279 502 791 1,65050 11 23 47 82 116 247 445 701 1,46060 10 21 42 74 105 224 403 635 1,32070 NA 19 39 68 96 206 371 585 1,22080 NA 18 36 63 90 192 345 544 1,13090 NA 17 34 59 84 180 324 510 1,060

100 NA 16 32 56 79 170 306 482 1,000125 NA 14 28 50 70 151 271 427 890150 NA 13 26 45 64 136 245 387 806175 NA 12 24 41 59 125 226 356 742200 NA 11 22 39 55 117 210 331 690250 NA NA 20 34 48 103 186 294 612300 NA NA 18 31 44 94 169 266 554350 NA NA 16 28 40 86 155 245 510400 NA NA 15 26 38 80 144 228 474450 NA NA 14 25 35 75 135 214 445500 NA NA 13 23 33 71 128 202 420550 NA NA 13 22 32 68 122 192 399600 NA NA 12 21 30 64 116 183 381650 NA NA 12 20 29 62 111 175 365700 NA NA 11 20 28 59 107 168 350750 NA NA 11 19 27 57 103 162 338800 NA NA 10 18 26 55 99 156 326850 NA NA 10 18 25 53 96 151 315900 NA NA NA 17 24 52 93 147 306950 NA NA NA 17 24 50 90 143 297

1,000 NA NA NA 16 23 49 88 139 2891,100 NA NA NA 15 22 46 84 132 2741,200 NA NA NA 15 21 44 80 126 2621,300 NA NA NA 14 20 42 76 120 2511,400 NA NA NA 13 19 41 73 116 2411,500 NA NA NA 13 18 39 71 111 2321,600 NA NA NA 13 18 38 68 108 2241,700 NA NA NA 12 17 37 66 104 2171,800 NA NA NA 12 17 36 64 101 2101,900 NA NA NA 11 16 35 62 98 2042,000 NA NA NA 11 16 34 60 95 199

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of thecopper tubing products.NA means a flow of less than 10 cfh. [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

30

Gas Natural

Inlet pressure0.5 psi or lessLess than 2 psi

Pressure Drop 1.0 in. WCTable 12.98 Semi-Rigid Copper Tubing

Specific Gravity 0.60

SPECIAL USE: Use this Table to Size Tubing from House Line Regulator to the Appliance.Tube Size (in.)

K & L 1/43/8

1/25/8

3/4 1 11/4 11/2 2 21/2Nominal:ACR 3/8

1/25/8

3/47/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 39 80 162 283 402 859 1,546 2,437 5,076 8,98120 27 55 111 195 276 590 1,062 1,675 3,489 6,17330 21 44 89 156 222 474 853 1,345 2,802 4,95740 18 38 77 134 190 406 730 1,151 2,398 4,24250 16 33 68 119 168 359 647 1,020 2,125 3,76060 15 30 61 107 152 326 586 925 1,926 3,40770 13 28 57 99 140 300 539 851 1,772 3,13480 13 26 53 92 131 279 502 791 1,648 2,91690 12 24 49 86 122 262 471 742 1,546 2,736

100 11 23 47 82 116 247 445 701 1,461 2,584125 9.8 20 41 72 103 219 394 622 1,295 2,290150 8.9 18 37 65 93 198 357 563 1,173 2,075175 8.2 17 34 60 85 183 329 518 1,079 1,909200 7.6 16 32 56 79 170 306 482 1,004 1,776250 6.8 14 28 50 70 151 271 427 890 1,574300 6.1 13 26 45 64 136 245 387 806 1,42610 39 80 162 283 402 859 1,550 2,440 5,08020 27 55 111 195 276 590 1,060 1,680 3,49030 21 44 89 156 222 474 853 1,350 2,80040 18 38 77 134 190 406 730 1,150 2,40050 16 33 68 119 168 359 647 1,020 2,13060 15 30 61 107 152 326 586 925 1,93070 13 28 57 99 140 300 539 851 1,77080 13 26 53 92 131 279 502 791 1,65090 12 24 49 86 122 262 471 742 1,550

100 11 23 47 82 116 247 445 701 1,460125 NA 20 41 72 103 219 394 622 1,290150 NA 18 37 65 93 198 357 563 1,170175 NA 17 34 60 85 183 329 518 1,080200 NA 16 32 56 79 170 306 482 1,000250 NA 14 28 50 70 151 271 427 890300 NA 13 26 45 64 136 245 387 806350 NA 12 24 41 59 125 226 356 742400 NA 11 22 39 55 117 210 331 690450 NA 10 21 36 51 110 197 311 647500 NA NA 20 34 48 103 186 294 612550 NA NA 19 32 46 98 177 279 581600 NA NA 18 31 44 94 169 266 554650 NA NA 17 30 42 90 162 255 531700 NA NA 16 28 40 86 155 245 510750 NA NA 16 27 39 83 150 236 491800 NA NA 15 26 38 80 144 228 474850 NA NA 15 26 36 78 140 220 459900 NA NA 14 25 35 75 135 214 445950 NA NA 14 24 34 73 132 207 432

1,000 NA NA 13 23 33 71 128 202 4201,100 NA NA 13 22 32 68 122 192 3991,200 NA NA 12 21 30 64 116 183 3811,300 NA NA 12 20 29 62 111 175 3651,400 NA NA 11 20 28 59 107 168 3501,500 NA NA 11 19 27 57 103 162 3381,600 NA NA 10 18 26 55 99 156 3261,700 NA NA 10 18 25 53 96 151 3151,800 NA NA NA 17 24 52 93 147 3061,900 NA NA NA 17 24 50 90 143 2972,000 NA NA NA 16 23 49 88 139 289

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of thecopper tubing products.NA means a flow of less than 10 cfh. [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

31

Gas Natural

Inlet pressureLess than 2.0 psior less

Pressure Drop 17.0 in. WCTable 12.109

Semi-Rigid Copper Tubing

Specific Gravity 0.60

Tube Size (in.)K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2Nominal:

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 190 391 796 1,391 1,974 4,216 7,591 11,968 24,926 44,10020 130 269 547 956 1,357 2,898 5,217 8,226 17,132 30,31030 105 216 439 768 1,089 2,327 4,189 6,605 13,757 24,34040 90 185 376 657 932 1,992 3,586 5,653 11,775 20,83250 79 164 333 582 826 1,765 3,178 5,010 10,436 18,46360 72 148 302 528 749 1,599 2,879 4,540 9,455 16,72970 66 137 278 486 689 1,471 2,649 4,177 8,699 15,39080 62 127 258 452 641 1,369 2,464 3,886 8,093 14,31890 58 119 243 424 601 1,284 2,312 3,646 7,593 13,434

100 55 113 229 400 568 1,213 2,184 3,444 7,172 12,689125 48 100 203 355 503 1,075 1,936 3,052 6,357 11,246150 44 90 184 321 456 974 1,754 2,765 5,760 10,190175 40 83 169 296 420 896 1,614 2,544 5,299 9,375200 38 77 157 275 390 834 1,501 2,367 4,930 8,721250 33 69 140 244 346 739 1,330 2,098 4,369 7,730300 30 62 126 221 313 670 1,205 1,901 3,959 7,00410 190 391 796 1,390 1,970 4,220 7,590 12,000 24,90020 130 269 547 956 1,360 2,900 5,220 8,230 17,10030 105 216 439 768 1,090 2,330 4,190 6,610 13,80040 90 185 376 657 932 1,990 3,590 5,650 11,80050 79 164 333 582 826 1,770 3,180 5,010 10,40060 72 148 302 528 749 1,600 2,880 4,540 9,46070 66 137 278 486 689 1,470 2,650 4,180 8,70080 62 127 258 452 641 1,370 2,460 3,890 8,09090 58 119 243 424 601 1,280 2,310 3,650 7,590

100 55 113 229 400 568 1,210 2,180 3,440 7,170125 48 100 203 355 503 1,080 1,940 3,050 6,360150 44 90 184 321 456 974 1,750 2,770 5,760175 40 83 169 296 420 896 1,610 2,540 5,300200 38 77 157 275 390 834 1,500 2,370 4,930250 33 69 140 244 346 739 1,330 2,100 4,370300 30 62 126 221 313 670 1,210 1,900 3,960350 28 57 116 203 288 616 1,110 1,750 3,640400 26 53 108 189 268 573 1,030 1,630 3,390450 24 50 102 177 252 538 968 1,530 3,180500 23 47 96 168 238 508 914 1,440 3,000550 22 45 91 159 226 482 868 1,370 2,850600 21 43 87 152 215 460 829 1,310 2,720650 20 41 83 145 206 441 793 1,250 2,610700 19 39 80 140 198 423 762 1,200 2,500750 18 38 77 135 191 408 734 1,160 2,410800 18 37 74 130 184 394 709 1,120 2,330850 17 35 72 126 178 381 686 1,080 2,250900 17 34 70 122 173 370 665 1,050 2,180950 16 33 68 118 168 359 646 1,020 2,120

1,000 16 32 66 115 163 349 628 991 2,0601,100 15 31 63 109 155 332 597 941 1,9601,200 14 29 60 104 148 316 569 898 1,8701,300 14 28 57 100 142 303 545 860 1,7901,400 13 27 55 96 136 291 524 826 1,7201,500 13 26 53 93 131 280 505 796 1,6601,600 12 25 51 89 127 271 487 768 1,6001,700 12 24 49 86 123 262 472 744 1,5501,800 11 24 48 84 119 254 457 721 1,5001,900 11 23 47 81 115 247 444 700 1,4602,000 11 22 45 79 112 240 432 681 1,420

[Notes unchanged] [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

32

Gas NaturalInlet pressure 2.0 psi or less

Pressure Drop 1.0 psiTable 12.1110 Semi-Rigid Copper Tubing

Specific Gravity 0.60

Tube Size (in.)K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2Nominal:

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 245 506 1,030 1,800 2,554 5,455 9,820 15,483 32,247 57,05120 169 348 708 1,237 1,755 3,749 6,749 10,641 22,163 39,21130 135 279 568 993 1,409 3,011 5,420 8,545 17,798 31,48840 116 239 486 850 1,206 2,577 4,639 7,314 15,232 26,94950 103 212 431 754 1,069 2,284 4,111 6,482 13,500 23,88560 93 192 391 683 969 2,069 3,725 5,873 12,232 21,64170 86 177 359 628 891 1,904 3,427 5,403 11,253 19,91080 80 164 334 584 829 1,771 3,188 5,027 10,469 18,52290 75 154 314 548 778 1,662 2,991 4,716 9,823 17,379

100 71 146 296 518 735 1,570 2,826 4,455 9,279 16,416125 63 129 263 459 651 1,391 2,504 3,948 8,223 14,549150 57 117 238 416 590 1,260 2,269 3,577 7,451 13,183175 52 108 219 383 543 1,160 2,087 3,291 6,855 12,128200 49 100 204 356 505 1,079 1,942 3,062 6,377 11,283250 43 89 181 315 448 956 1,721 2,714 5,652 10,000300 39 80 164 286 406 866 1,559 2,459 5,121 9,06010 245 506 1,030 1,800 2,550 5,450 9,820 15,500 32,20020 169 348 708 1,240 1,760 3,750 6,750 10,600 22,20030 135 279 568 993 1,410 3,010 5,420 8,550 17,80040 116 239 486 850 1,210 2,580 4,640 7,310 15,20050 103 212 431 754 1,070 2,280 4,110 6,480 13,50060 93 192 391 683 969 2,070 3,730 5,870 12,20070 86 177 359 628 891 1,900 3,430 5,400 11,30080 80 164 334 584 829 1,770 3,190 5,030 10,50090 75 154 314 548 778 1,660 2,990 4,720 9,820

100 71 146 296 518 735 1,570 2,830 4,450 9,280125 63 129 263 459 651 1,390 2,500 3,950 8,220150 57 117 238 416 590 1,260 2,270 3,580 7,450175 52 108 219 383 543 1,160 2,090 3,290 6,850200 49 100 204 356 505 1,080 1,940 3,060 6,380250 43 89 181 315 448 956 1,720 2,710 5,650300 39 80 164 286 406 866 1,560 2,460 5,120350 36 74 150 263 373 797 1,430 2,260 4,710400 33 69 140 245 347 741 1,330 2,100 4,380450 31 65 131 230 326 696 1,250 1,970 4,110500 30 61 124 217 308 657 1,180 1,870 3,880550 28 58 118 206 292 624 1,120 1,770 3,690600 27 55 112 196 279 595 1,070 1,690 3,520650 26 53 108 188 267 570 1,030 1,620 3,370700 25 51 103 181 256 548 986 1,550 3,240750 24 49 100 174 247 528 950 1,500 3,120800 23 47 96 168 239 510 917 1,450 3,010850 22 46 93 163 231 493 888 1,400 2,920900 22 44 90 158 224 478 861 1,360 2,830950 21 43 88 153 217 464 836 1,320 2,740

1,000 20 42 85 149 211 452 813 1,280 2,6701,100 19 40 81 142 201 429 772 1,220 2,5401,200 18 38 77 135 192 409 737 1,160 2,4201,300 18 36 74 129 183 392 705 1,110 2,3201,400 17 35 71 124 176 376 678 1,070 2,2301,500 16 34 68 120 170 363 653 1,030 2,1401,600 16 33 66 116 164 350 630 994 2,0701,700 15 31 64 112 159 339 610 962 2,0001,800 15 30 62 108 154 329 592 933 1,9401,900 14 30 60 105 149 319 575 906 1,8902,000 14 29 59 102 145 310 559 881 1,830

[Note unchanged] [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

33

Gas Natural

Inlet pressure 2.0 psi

Pressure Drop 1.5 psiTable 12.1211 Semi-Rigid Copper Tubing

Specific Gravity 0.60

SPECIAL USE:Pipe Sizing Between Point of Delivery and the House Line Regulator. Total Load Supplied by aSingle House Line Regulator Not Exceeding 150 Cubic Feet per Hour.2

Tube Size (in.)K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2Nominal:

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside1: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 303 625 1,272 2,224 3,155 6,739 12,131 19,127 39,837 70,48120 208 430 874 1,528 2,168 4,631 8,338 13,146 27,380 48,44130 167 345 702 1,227 1,741 3,719 6,696 10,557 21,987 38,90040 143 295 601 1,050 1,490 3,183 5,731 9,035 18,818 33,29350 127 262 533 931 1,321 2,821 5,079 8,008 16,678 29,50760 115 237 483 843 1,197 2,556 4,602 7,256 15,112 26,73670 106 218 444 776 1,101 2,352 4,234 6,675 13,903 24,59780 98 203 413 722 1,024 2,188 3,939 6,210 12,934 22,88290 92 191 388 677 961 2,053 3,695 5,826 12,135 21,470

100 87 180 366 640 908 1,939 3,491 5,504 11,463 20,280125 77 159 324 567 804 1,718 3,094 4,878 10,159 17,974150 70 145 294 514 729 1,557 2,803 4,420 9,205 16,286175 64 133 270 473 671 1,432 2,579 4,066 8,469 14,983200 60 124 252 440 624 1,333 2,399 3,783 7,878 13,938250 53 110 223 390 553 1,181 2,126 3,352 6,982 12,353300 48 99 202 353 501 1,070 1,927 3,038 6,327 11,19310 303 625 1,270 2,220 3,150 6,740 12,100 19,100 39,80020 208 430 874 1,530 2,170 4,630 8,330 13,100 27,40030 167 345 702 1,230 1,740 3,720 6,690 10,600 22,00040 143 295 601 1,050 1,490 3,180 5,730 9,030 18,80050 127 262 532 931 1,320 2,820 5,080 8,000 16,70060 115 237 482 843 1,200 2,560 4,600 7,250 15,10070 106 218 444 776 1,100 2,350 4,230 6,670 13,90080 98 203 413 722 1,020 2,190 3,940 6,210 12,90090 92 190 387 677 961 2,050 3,690 5,820 12,100

100 87 180 366 640 907 1,940 3,490 5,500 11,500125 77 159 324 567 804 1,720 3,090 4,880 10,200150 70 144 294 514 729 1,560 2,800 4,420 9,200175 64 133 270 472 670 1,430 2,580 4,060 8,460200 60 124 252 440 624 1,330 2,400 3,780 7,870250 53 110 223 390 553 1,180 2,130 3,350 6,980300 48 99 202 353 501 1,070 1,930 3,040 6,320350 44 91 186 325 461 984 1,770 2,790 5,820400 41 85 173 302 429 916 1,650 2,600 5,410450 39 80 162 283 402 859 1,550 2,440 5,080500 36 75 153 268 380 811 1,460 2,300 4,800550 35 72 146 254 361 771 1,390 2,190 4,560600 33 68 139 243 344 735 1,320 2,090 4,350650 32 65 133 232 330 704 1,270 2,000 4,160700 30 63 128 223 317 676 1,220 1,920 4,000750 29 60 123 215 305 652 1,170 1,850 3,850800 28 58 119 208 295 629 1,130 1,790 3,720850 27 57 115 201 285 609 1,100 1,730 3,600900 27 55 111 195 276 590 1,060 1,680 3,490950 26 53 108 189 268 573 1,030 1,630 3,390

1,000 25 52 105 184 261 558 1,000 1,580 3,3001,100 24 49 100 175 248 530 954 1,500 3,1301,200 23 47 95 167 237 505 910 1,430 2,9901,300 22 45 91 160 227 484 871 1,370 2,8601,400 21 43 88 153 218 465 837 1,320 2,7501,500 20 42 85 148 210 448 806 1,270 2,6501,600 19 40 82 143 202 432 779 1,230 2,5601,700 19 39 79 138 196 419 753 1,190 2,4701,800 18 38 77 134 190 406 731 1,150 2,4001,900 18 37 74 130 184 394 709 1,120 2,3302,000 17 36 72 126 179 383 690 1,090 2,270

[Notes unchanged] [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

34

Gas Natural

Inlet pressure 5.0 psi or less

Pressure Drop 3.5 psiTable 12.1312 Semi-Rigid Copper Tubing

Specific Gravity 0.60

Tube Size (in.)

K & L 1/43/8

1/25/8

3/4 1 11/4 11/2 2 21/2Nominal:ACR 3/8

1/25/8

3/47/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 511 1,054 2,144 3,747 5,315 11,354 20,441 32,229 67,125 118,75820 351 724 1,473 2,575 3,653 7,804 14,049 22,151 46,135 81,62230 282 582 1,183 2,068 2,934 6,267 11,282 17,788 37,048 65,54540 241 498 1,013 1,770 2,511 5,364 9,656 15,224 31,708 56,09850 214 441 898 1,569 2,225 4,754 8,558 13,493 28,102 49,71960 194 400 813 1,421 2,016 4,307 7,754 12,225 25,463 45,04970 178 368 748 1,308 1,855 3,962 7,134 11,247 23,425 41,44480 166 342 696 1,216 1,726 3,686 6,636 10,463 21,793 38,55690 156 321 653 1,141 1,619 3,459 6,227 9,817 20,447 36,176

100 147 303 617 1,078 1,529 3,267 5,882 9,273 19,315 34,172125 130 269 547 955 1,356 2,896 5,213 8,219 17,118 30,286150 118 243 495 866 1,228 2,624 4,723 7,447 15,510 27,441175 109 224 456 796 1,130 2,414 4,345 6,851 14,269 25,245200 101 208 424 741 1,051 2,245 4,042 6,374 13,275 23,486250 90 185 376 657 932 1,990 3,583 5,649 11,765 20,815300 81 167 340 595 844 1,803 3,246 5,118 10,660 18,86010 511 1,050 2,140 3,750 5,320 11,400 20,400 32,200 67,10020 351 724 1,470 2,580 3,650 7,800 14,000 22,200 46,10030 282 582 1,180 2,070 2,930 6,270 11,300 17,800 37,00040 241 498 1,010 1,770 2,510 5,360 9,660 15,200 31,70050 214 441 898 1,570 2,230 4,750 8,560 13,500 28,10060 194 400 813 1,420 2,020 4,310 7,750 12,200 25,50070 178 368 748 1,310 1,860 3,960 7,130 11,200 23,40080 166 342 696 1,220 1,730 3,690 6,640 10,500 21,80090 156 321 653 1,140 1,620 3,460 6,230 9,820 20,400

100 147 303 617 1,080 1,530 3,270 5,880 9,270 19,300125 130 269 547 955 1,360 2,900 5,210 8,220 17,100150 118 243 495 866 1,230 2,620 4,720 7,450 15,500175 109 224 456 796 1,130 2,410 4,350 6,850 14,300200 101 208 424 741 1,050 2,250 4,040 6,370 13,300250 90 185 376 657 932 1,990 3,580 5,650 11,800300 81 167 340 595 844 1,800 3,250 5,120 10,700350 75 154 313 547 777 1,660 2,990 4,710 9,810400 69 143 291 509 722 1,540 2,780 4,380 9,120450 65 134 273 478 678 1,450 2,610 4,110 8,560500 62 127 258 451 640 1,370 2,460 3,880 8,090550 58 121 245 429 608 1,300 2,340 3,690 7,680600 56 115 234 409 580 1,240 2,230 3,520 7,330650 53 110 224 392 556 1,190 2,140 3,370 7,020700 51 106 215 376 534 1,140 2,050 3,240 6,740750 49 102 207 362 514 1,100 1,980 3,120 6,490800 48 98 200 350 497 1,060 1,910 3,010 6,270850 46 95 194 339 481 1,030 1,850 2,910 6,070900 45 92 188 328 466 1,000 1,790 2,820 5,880950 43 90 182 319 452 967 1,740 2,740 5,710

1,000 42 87 177 310 440 940 1,690 2,670 5,5601,100 40 83 169 295 418 893 1,610 2,530 5,2801,200 38 79 161 281 399 852 1,530 2,420 5,0401,300 37 76 154 269 382 816 1,470 2,320 4,8201,400 35 73 148 259 367 784 1,410 2,220 4,6301,500 34 70 143 249 353 755 1,360 2,140 4,4601,600 33 68 138 241 341 729 1,310 2,070 4,3101,700 32 65 133 233 330 705 1,270 2,000 4,1701,800 31 63 129 226 320 684 1,230 1,940 4,0401,900 30 62 125 219 311 664 1,200 1,890 3,9302,000 29 60 122 213 302 646 1,160 1,830 3,820

[Note unchanged] [ROP 54/Z223.1–131]

NFPA 54/Z223.1 – A05 ROP

35

Gas Natural

Inlet pressure0.5 psi or lessLess than 2 psi

Pressure Drop 0.5 in. WCTable 12.1413

Corrugated Stainless Steel Tubing(CSST)

Specific Gravity 0.60

Tube Size (EHD*)Flow Desig-

nation:13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour5 46 63 115 134 225 270 471 546 895 1,790 4,142

10 32 44 82 95 161 192 330 383 639 1,261 2,93415 25 35 66 77 132 157 267 310 524 1,027 2,39820 22 31 58 67 116 137 231 269 456 888 2,07825 19 27 52 60 104 122 206 240 409 793 1,86030 18 25 47 55 96 112 188 218 374 723 1,69840 15 21 41 47 83 97 162 188 325 625 1,47250 13 19 37 42 75 87 144 168 292 559 1,31760 12 17 34 38 68 80 131 153 267 509 1,20370 11 16 31 36 63 74 121 141 248 471 1,11480 10 15 29 33 60 69 113 132 232 440 1,04290 10 14 28 32 57 65 107 125 219 415 983

100 9 13 26 30 54 62 101 118 208 393 933150 7 10 20 23 42 48 78 91 171 320 762200 6 9 18 21 38 44 71 82 148 277 661250 5 8 16 19 34 39 63 74 133 247 591300 5 7 15 17 32 36 57 67 95 226 540

5 46 63 115 134 225 270 471 546 895 1,790 3,660 2,070 4,14010 32 44 82 95 161 192 330 383 639 1,260 2,600 1,470 2,93015 25 35 66 77 132 157 267 310 524 1,030 2,140 1,200 2,40020 22 31 58 67 116 137 231 269 456 888 1,850 1,050 2,08025 19 27 52 60 104 122 206 240 409 793 1,660 936 1,86030 18 25 47 55 96 112 188 218 374 723 1,520 856 1,70040 15 21 41 47 83 97 162 188 325 625 1,320 742 1,47050 13 19 37 42 75 87 144 168 292 559 1,180 665 1,32060 12 17 34 38 68 80 131 153 267 509 1,080 608 1,20070 11 16 31 36 63 74 121 141 248 471 1,000 563 1,11080 10 15 29 33 60 69 113 132 232 440 940 527 1,04090 10 14 28 32 57 65 107 125 219 415 887 498 983

100 9 13 26 30 54 62 101 118 208 393 843 472 933150 7 10 20 23 42 48 78 91 171 320 691 387 762200 6 9 18 21 38 44 71 82 148 277 600 336 661250 5 8 16 19 34 39 63 74 133 247 538 301 591300 5 7 15 17 32 36 57 67 95 226 492 275 540

[Notes unchanged] [ROP 54/Z223.1–133]

Gas Natural

Inlet pressure0.5 psi or less Lessthan 2 psi

Pressure Drop 3.0 in. WCTable 12.1514

Corrugated Stainless Steel Tubing(CSST)

Specific Gravity 0.60

Tube Size (EHD*)Flow Des-ignation:

13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour5 120 160 277 327 529 649 1,182 1,365 2,141 4,428 10,103

10 83 112 197 231 380 462 828 958 1,528 3,199 7,15615 67 90 161 189 313 379 673 778 1,254 2,541 5,84820 57 78 140 164 273 329 580 672 1,090 2,197 5,06925 51 69 125 147 245 295 518 599 978 1,963 4,53630 46 63 115 134 225 270 471 546 895 1,790 4,14240 39 54 100 116 196 234 407 471 778 1,548 3,59050 35 48 89 104 176 210 363 421 698 1,383 3,21360 32 44 82 95 161 192 330 383 639 1,261 2,93470 29 41 76 88 150 178 306 355 593 1,166 2,71780 27 38 71 82 141 167 285 331 555 1,090 2,54390 26 36 67 77 133 157 268 311 524 1,027 2,398

100 24 34 63 73 126 149 254 295 498 974 2,276150 19 27 52 60 104 122 206 240 409 793 1,860200 17 23 45 52 91 106 178 207 355 686 1,612

NFPA 54/Z223.1 – A05 ROP

36

250 15 21 40 46 82 95 159 184 319 613 1,442300 13 19 37 42 75 87 144 168 234 559 1,317

5 120 160 277 327 529 649 1,180 1,370 2,140 4,430 5,010 8,800 10,10010 83 112 197 231 380 462 828 958 1,530 3,200 3,560 6,270 7,16015 67 90 161 189 313 379 673 778 1,250 2,540 2,910 5,140 5,85020 57 78 140 164 273 329 580 672 1,090 2,200 2,530 4,460 5,07025 51 69 125 147 245 295 518 599 978 1,960 2,270 4,000 4,54030 46 63 115 134 225 270 471 546 895 1,790 2,070 3,660 4,14040 39 54 100 116 196 234 407 471 778 1,550 1,800 3,180 3,59050 35 48 89 104 176 210 363 421 698 1,380 1,610 2,850 3,21060 32 44 82 95 161 192 330 383 639 1,260 1,470 2,600 2,93070 29 41 76 88 150 178 306 355 593 1,170 1,360 2,420 2,72080 27 38 71 82 141 167 285 331 555 1,090 1,280 2,260 2,54090 26 36 67 77 133 157 268 311 524 1,030 1,200 2,140 2,400

100 24 34 63 73 126 149 254 295 498 974 1,140 2,030 2,280150 19 27 52 60 104 122 206 240 409 793 936 1,660 1,860200 17 23 45 52 91 106 178 207 355 686 812 1,440 1,610250 15 21 40 46 82 95 159 184 319 613 728 1,290 1,440300 13 19 37 42 75 87 144 168 234 559 665 1,180 1,320

[Notes unchanged] [ROP 54/Z223.1–133]

Gas Natural

Inlet pressure0.5 psi or less Less than 2psi

Pressure Drop 6.0 in. WCTable 12.1615 Corrugated Stainless Steel Tubing (CSST)

Specific Gravity 0.60

Tube Size (EHD*)Flow Des-ignation:

13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour5 173 229 389 461 737 911 1,687 1,946 3,000 6,282 14,263

10 120 160 277 327 529 649 1,182 1,365 2,141 4,428 10,10315 96 130 227 267 436 532 960 1,110 1,758 3,607 8,25720 83 112 197 231 380 462 828 958 1,528 3,119 7,15625 74 99 176 207 342 414 739 855 1,371 2,786 6,40430 67 90 161 189 313 379 673 778 1,254 2,541 5,84840 57 78 140 164 273 329 580 672 1,090 2,197 5,06950 51 69 125 147 245 295 518 599 978 1,963 4,53660 46 63 115 134 225 270 471 546 895 1,790 4,14270 42 58 106 124 209 250 435 505 830 1,656 3,83780 39 54 100 116 196 234 407 471 778 1,548 3,59090 37 51 94 109 185 221 383 444 735 1,458 3,386

100 35 48 89 104 176 210 363 421 698 1,383 3,213150 28 39 73 85 145 172 294 342 573 1,126 2,626200 24 34 63 73 126 149 254 295 498 974 2,276250 21 30 57 66 114 134 226 263 447 870 2,036300 19 27 52 60 104 122 206 240 409 793 1,860

5 173 229 389 461 737 911 1,690 1,950 3,000 6,280 7,050 12,400 14,26010 120 160 277 327 529 649 1,180 1,370 2,140 4,430 5,010 8,800 10,10015 96 130 227 267 436 532 960 1,110 1,760 3,610 4,100 7,210 8,26020 83 112 197 231 380 462 828 958 1,530 3,120 3,560 6,270 7,16025 74 99 176 207 342 414 739 855 1,370 2,790 3,190 5,620 6,40030 67 90 161 189 313 379 673 778 1,250 2,540 2,910 5,140 5,85040 57 78 140 164 273 329 580 672 1,090 2,200 2,530 4,460 5,07050 51 69 125 147 245 295 518 599 978 1,960 2,270 4,000 4,54060 46 63 115 134 225 270 471 546 895 1,790 2,070 3,660 4,14070 42 58 106 124 209 250 435 505 830 1,660 1,920 3,390 3,84080 39 54 100 116 196 234 407 471 778 1,550 1,800 3,180 3,59090 37 51 94 109 185 221 383 444 735 1,460 1,700 3,000 3,390

100 35 48 89 104 176 210 363 421 698 1,380 1,610 2,850 3,210150 28 39 73 85 145 172 294 342 573 1,130 1,320 2,340 2,630200 24 34 63 73 126 149 254 295 498 974 1,140 2,030 2,280250 21 30 57 66 114 134 226 263 447 870 1,020 1,820 2,040300 19 27 52 60 104 122 206 240 409 793 936 1,660 1,860

[Notes unchanged] [ROP 54/Z223.1–133]

NFPA 54/Z223.1 – A05 ROP

37

Gas NaturalInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.1716 Corrugated Stainless Steel Tubing (CSST)

Specific Gravity 0.60

Tube Size (EHD*)Flow Desig-

nation:13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 270 353 587 700 1,098 1,372 2,592 2,986 4,509 9,599 21,63725 166 220 374 444 709 876 1,620 1,869 2,887 6,041 13,71530 151 200 342 405 650 801 1,475 1,703 2,642 5,509 12,52640 129 172 297 351 567 696 1,273 1,470 2,297 4,763 10,85550 115 154 266 314 510 624 1,135 1,311 2,061 4,255 9,71575 93 124 218 257 420 512 922 1,066 1,692 3,467 7,94080 89 120 211 249 407 496 892 1,031 1,639 3,355 7,689

100 79 107 189 222 366 445 795 920 1,471 2,997 6,881150 64 87 155 182 302 364 646 748 1,207 2,442 5,624200 55 75 135 157 263 317 557 645 1,049 2,111 4,874250 49 67 121 141 236 284 497 576 941 1,886 4,362300 44 61 110 129 217 260 453 525 862 1,720 3,983400 38 52 96 111 189 225 390 453 749 1,487 3,452500 34 46 86 100 170 202 348 404 552 1,329 3,08910 270 353 587 700 1,100 1,370 2,590 2,990 4,510 9,600 10,700 18,600 21,60025 166 220 374 444 709 876 1,620 1,870 2,890 6,040 6,780 11,900 13,70030 151 200 342 405 650 801 1,480 1,700 2,640 5,510 6,200 10,900 12,50040 129 172 297 351 567 696 1,270 1,470 2,300 4,760 5,380 9,440 10,90050 115 154 266 314 510 624 1,140 1,310 2,060 4,260 4,820 8,470 9,72075 93 124 218 257 420 512 922 1,070 1,690 3,470 3,950 6,940 7,94080 89 120 211 249 407 496 892 1,030 1,640 3,360 3,820 6,730 7,690

100 79 107 189 222 366 445 795 920 1,470 3,000 3,420 6,030 6,880150 64 87 155 182 302 364 646 748 1,210 2,440 2,800 4,940 5,620200 55 75 135 157 263 317 557 645 1,050 2,110 2,430 4,290 4,870250 49 67 121 141 236 284 497 576 941 1,890 2,180 3,850 4,360300 44 61 110 129 217 260 453 525 862 1,720 1,990 3,520 3,980400 38 52 96 111 189 225 390 453 749 1,490 1,730 3,060 3,450500 34 46 86 100 170 202 348 404 552 1,330 1,550 2,740 3,090

[Notes unchanged] [ROP 54/Z223.1–133]

Gas NaturalInlet pressure 5.0 psi

Pressure Drop 3.5 psiTable 12.1817 Corrugated Stainless Steel Tubing (CSST)

Specific Gravity 0.60

Tube Size (EHD*)Flow Desig-

nation:13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour10 523 674 1,084 1,304 1,995 2,530 4,923 5,659 8,295 18,080 40,35325 322 420 691 827 1,289 1,616 3,077 3,543 5,311 11,378 25,58030 292 382 632 755 1,181 1,478 2,803 3,228 4,860 10,377 23,36140 251 329 549 654 1,031 1,284 2,418 2,786 4,225 8,972 20,24650 223 293 492 586 926 1,151 2,157 2,486 3,791 8,015 18,11975 180 238 403 479 763 944 1,752 2,021 3,112 6,530 14,80980 174 230 391 463 740 915 1,694 1,955 3,016 6,320 14,341

100 154 205 350 415 665 820 1,511 1,744 2,705 5,646 12,834150 124 166 287 339 548 672 1,228 1,418 2,221 4,600 10,489200 107 143 249 294 478 584 1,060 1,224 1,931 3,977 9,090250 95 128 223 263 430 524 945 1,092 1,732 3,553 8,135300 86 116 204 240 394 479 860 995 1,585 3,240 7,430400 74 100 177 208 343 416 742 858 1,378 2,802 6,439500 66 89 159 186 309 373 662 766 1,035 2,503 5,76210 523 674 1,080 1,300 2,000 2,530 4,920 5,660 8,300 18,100 19,800 34,400 40,40025 322 420 691 827 1,290 1,620 3,080 3,540 5,310 11,400 12,600 22,000 25,60030 292 382 632 755 1,180 1,480 2,800 3,230 4,860 10,400 11,500 20,100 23,40040 251 329 549 654 1,030 1,280 2,420 2,790 4,230 8,970 10,000 17,400 20,20050 223 293 492 586 926 1,150 2,160 2,490 3,790 8,020 8,930 15,600 18,10075 180 238 403 479 763 944 1,750 2,020 3,110 6,530 7,320 12,800 14,80080 174 230 391 463 740 915 1,690 1,960 3,020 6,320 7,090 12,400 14,300

100 154 205 350 415 665 820 1,510 1,740 2,710 5,650 6,350 11,100 12,800150 124 166 287 339 548 672 1,230 1,420 2,220 4,600 5,200 9,130 10,500

NFPA 54/Z223.1 – A05 ROP

38

200 107 143 249 294 478 584 1,060 1,220 1,930 3,980 4,510 7,930 9,090250 95 128 223 263 430 524 945 1,090 1,730 3,550 4,040 7,110 8,140300 86 116 204 240 394 479 860 995 1,590 3,240 3,690 6,500 7,430400 74 100 177 208 343 416 742 858 1,380 2,800 3,210 5,650 6,440500 66 89 159 186 309 373 662 766 1,040 2,500 2,870 5,060 5,760

[Notes unchanged] [ROP 54/Z223.1–133]

Gas Natural

Inlet pressure1.0 psi or LessLess than 2 psi

Pressure Drop 0.3 in. WCTable 12.1918 Polyethylene Plastic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal OD: 1/2

3/4 1 11/4 11/2 2Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 153 305 551 955 1,442 2,59020 105 210 379 656 991 1,78030 84 169 304 527 796 1,43040 72 144 260 451 681 1,22450 64 128 231 400 604 1,08460 58 116 209 362 547 98370 53 107 192 333 503 90480 50 99 179 310 468 84190 46 93 168 291 439 789

100 44 88 159 275 415 745125 39 78 141 243 368 661150 35 71 127 221 333 598175 32 65 117 203 306 551200 30 60 109 189 285 51210 153 305 551 955 1,440 2,59020 105 210 379 656 991 1,78030 84 169 304 527 796 1,43040 72 144 260 451 681 1,22050 64 128 231 400 604 1,08060 58 116 209 362 547 98370 53 107 192 333 503 90480 50 99 179 310 468 84190 46 93 168 291 439 789

100 44 88 159 275 415 745125 39 78 141 243 368 661150 35 71 127 221 333 598175 32 65 117 203 306 551200 30 60 109 189 285 512250 27 54 97 167 253 454300 24 48 88 152 229 411350 22 45 81 139 211 378400 21 42 75 130 196 352450 19 39 70 122 184 330500 18 37 66 115 174 312

[ROP 54/Z223.1–131]

Gas Natural

Inlet pressure1.0 psi or LessLess than 2 psi

Pressure Drop 0.5 in. WCTable 12.2019 Polyethylene Plastic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal OD: 1/2

3/4 1 11/4 11/2 2Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 201 403 726 1,258 1,900 3,41520 138 277 499 865 1,306 2,34730 111 222 401 695 1,049 1,88540 95 190 343 594 898 1,61350 84 169 304 527 796 1,43060 76 153 276 477 721 1,295

NFPA 54/Z223.1 – A05 ROP

39

70 70 140 254 439 663 1,19280 65 131 236 409 617 1,10990 61 123 221 383 579 1,040

100 58 116 209 362 547 983125 51 103 185 321 485 871150 46 93 168 291 439 789175 43 86 154 268 404 726200 40 80 144 249 376 67510 201 403 726 1,260 1,900 3,41020 138 277 499 865 1,310 2,35030 111 222 401 695 1,050 1,88040 95 190 343 594 898 1,61050 84 169 304 527 796 1,43060 76 153 276 477 721 1,30070 70 140 254 439 663 1,19080 65 131 236 409 617 1,11090 61 123 221 383 579 1,040

100 58 116 209 362 547 983125 51 103 185 321 485 871150 46 93 168 291 439 789175 43 86 154 268 404 726200 40 80 144 249 376 675250 35 71 127 221 333 598300 32 64 115 200 302 542350 29 59 106 184 278 499400 27 55 99 171 258 464450 26 51 93 160 242 435500 24 48 88 152 229 411

[ROP 54/Z223.1–131]

Gas NaturalInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.2120 Polyethylene Plastic Pipe

Specific Gravity 0.60

Pipe Size (in.)Nominal OD: 1/2

3/4 1 11/4 11/2 2Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Cubic Feet of Gas per Hour

10 1,858 3,721 6,714 11,631 17,565 31,56020 1,277 2,557 4,614 7,994 12,072 21,69130 1,026 2,054 3,706 6,420 9,695 17,41940 878 1,758 3,172 5,494 8,297 14,90850 778 1,558 2,811 4,869 7,354 13,21360 705 1,412 2,547 4,412 6,663 11,97270 649 1,299 2,343 4,059 6,130 11,01480 603 1,208 2,180 3,776 5,703 10,24690 566 1,134 2,045 3,543 5,351 9,614

100 535 1,071 1,932 3,347 5,054 9,081125 474 949 1,712 2,966 4,479 8,048150 429 860 1,551 2,688 4,059 7,292175 395 791 1,427 2,473 3,734 6,709200 368 736 1,328 2,300 3,474 6,24110 1,860 3,720 6,710 11,600 17,600 31,60020 1,280 2,560 4,610 7,990 12,100 21,70030 1,030 2,050 3,710 6,420 9,690 17,40040 878 1,760 3,170 5,490 8,300 14,90050 778 1,560 2,810 4,870 7,350 13,20060 705 1,410 2,550 4,410 6,660 12,00070 649 1,300 2,340 4,060 6,130 11,00080 603 1,210 2,180 3,780 5,700 10,20090 566 1,130 2,050 3,540 5,350 9,610

100 535 1,070 1,930 3,350 5,050 9,080125 474 949 1,710 2,970 4,480 8,050150 429 860 1,550 2,690 4,060 7,290175 395 791 1,430 2,470 3,730 6,710200 368 736 1,330 2,300 3,470 6,240250 326 652 1,180 2,040 3,080 5,530300 295 591 1,070 1,850 2,790 5,010350 272 544 981 1,700 2,570 4,610400 253 506 913 1,580 2,390 4,290

NFPA 54/Z223.1 – A05 ROP

40

450 237 475 856 1,480 2,240 4,020500 224 448 809 1,400 2,120 3,800550 213 426 768 1,330 2,010 3,610600 203 406 733 1,270 1,920 3,440650 194 389 702 1,220 1,840 3,300700 187 374 674 1,170 1,760 3,170750 180 360 649 1,130 1,700 3,050800 174 348 627 1,090 1,640 2,950850 168 336 607 1,050 1,590 2,850900 163 326 588 1,020 1,540 2,770950 158 317 572 990 1,500 2,690

1,000 154 308 556 963 1,450 2,6101,100 146 293 528 915 1,380 2,4801,200 139 279 504 873 1,320 2,3701,300 134 267 482 836 1,260 2,2701,400 128 257 463 803 1,210 2,1801,500 124 247 446 773 1,170 2,1001,600 119 239 431 747 1,130 2,0301,700 115 231 417 723 1,090 1,9601,800 112 224 404 701 1,060 1,9001,900 109 218 393 680 1,030 1,8502,000 106 212 382 662 1,000 1,800

[ROP 54/Z223.1–131]

Table 12.21 Polyethylene Plastic Tubing

Gas NaturalInlet pressure Less than 2.0 psi

Pressure Drop 0.3 in. WCSpecific Gravity 0.60

Plastic Tubing Size (CTS) (in.)Nominal OD: 1/2

3/4Designation: SDR 7.00 SDR 11.00

Actual ID: 0.445 0.927Length

(ft)Capacity in Cubic Feet of Gas per Hour

10 54 37220 37 25630 30 20540 26 17650 23 15660 21 14170 19 13080 18 12190 17 113

100 16 107125 14 95150 13 86175 12 79200 11 74225 10 69250 NA 65275 NA 62300 NA 59350 NA 54400 NA 51450 NA 47500 NA 45

NA means a flow of less than 10 cfh. [ROP 54/Z223.1–135]

Table 12.22 Polyethylene Plastic Tubing

Gas NaturalInlet pressure Less than 2.0 psi

Pressure Drop 0.5 in. WCSpecific Gravity 0.60

Plastic Tubing Size (CTS) (in.)Nominal OD: 1/2

3/4Designation: SDR 7.00 SDR 11.00

Actual ID: 0.445 0.927Length

(ft)Capacity in Cubic Feet of Gas per Hour

10 72 49020 49 33730 39 27140 34 23250 30 20560 27 18670 25 17180 23 15990 22 149

100 21 141125 18 125150 17 113175 15 104200 14 97225 13 91250 12 86275 11 82300 11 78350 10 72400 NA 67450 NA 63500 NA 59

NA means a flow of less than 10 cfh. [ROP 54/Z223.1–135]

NFPA 54/Z223.1 – A05 ROP

41

Gas Undiluted PropaneInlet pressure 10.0 psi

Pressure Drop 1.0 psiTable 12.2223 Schedule 40 Metallic Pipe

Specific Gravity 1.50

SPECIAL USE:Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low PressureRegulator)

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 3 31/2 4Actual: 0.622 0.824 1.049 1.38 1.61 2.067 3.068 3.548 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour30 1,834 3,835 7,225 14,834 22,225 42,804 120,604 176,583 245,99540 1,570 3,283 6,184 12,696 19,022 36,634 103,222 151,132 210,53950 1,391 2,909 5,480 11,252 16,859 32,468 91,484 133,946 186,59760 1,261 2,636 4,966 10,195 15,275 29,419 82,891 121,364 169,07170 1,160 2,425 4,568 9,379 14,053 27,065 76,258 111,654 155,54380 1,079 2,256 4,250 8,726 13,074 25,179 70,944 103,872 144,70390 1,012 2,117 3,988 8,187 12,267 23,624 66,564 97,460 135,770

100 956 2,000 3,767 7,733 11,587 22,315 62,876 92,060 128,247150 768 1,606 3,025 6,210 9,305 17,920 50,492 73,927 102,987200 657 1,374 2,589 5,315 7,964 15,337 43,214 63,272 88,144250 582 1,218 2,294 4,711 7,058 13,593 38,300 56,077 78,120300 528 1,104 2,079 4,268 6,395 12,316 34,703 50,810 70,782350 486 1,015 1,913 3,927 5,883 11,331 31,926 46,744 65,119400 452 945 1,779 3,653 5,473 10,541 29,701 43,487 60,581450 424 886 1,669 3,428 5,135 9,890 27,867 40,802 56,841500 400 837 1,577 3,238 4,851 9,342 26,323 38,541 53,691600 363 759 1,429 2,934 4,395 8,465 23,851 34,921 48,648700 334 698 1,314 2,699 4,044 7,788 21,943 32,127 44,756800 310 649 1,223 2,511 3,762 7,245 20,413 29,888 41,637900 291 609 1,147 2,356 3,530 6,798 19,153 28,043 39,066

1,000 275 575 1,084 2,225 3,334 6,421 18,092 26,489 36,9021,500 221 462 870 1,787 2,677 5,156 14,528 21,272 29,6332,000 189 395 745 1,529 2,291 4,413 12,435 18,206 25,362

Nominal Inside: 1/23/4 1 11/4 11/2 2 2 1/2 3 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Capacity in Thousands of Btu per Hour

10 3,320 6,950 13,100 26,900 40,300 77,600 124,000 219,000 446,00020 2,280 4,780 9,000 18,500 27,700 53,300 85,000 150,000 306,00030 1,830 3,840 7,220 14,800 22,200 42,800 68,200 121,000 246,00040 1,570 3,280 6,180 12,700 19,000 36,600 58,400 103,000 211,00050 1,390 2,910 5,480 11,300 16,900 32,500 51,700 91,500 187,00060 1,260 2,640 4,970 10,200 15,300 29,400 46,900 82,900 169,00070 1,160 2,430 4,570 9,380 14,100 27,100 43,100 76,300 156,00080 1,080 2,260 4,250 8,730 13,100 25,200 40,100 70,900 145,00090 1,010 2,120 3,990 8,190 12,300 23,600 37,700 66,600 136,000

100 956 2,000 3,770 7,730 11,600 22,300 35,600 62,900 128,000125 848 1,770 3,340 6,850 10,300 19,800 31,500 55,700 114,000150 768 1,610 3,020 6,210 9,300 17,900 28,600 50,500 103,000175 706 1,480 2,780 5,710 8,560 16,500 26,300 46,500 94,700200 657 1,370 2,590 5,320 7,960 15,300 24,400 43,200 88,100250 582 1,220 2,290 4,710 7,060 13,600 21,700 38,300 78,100300 528 1,100 2,080 4,270 6,400 12,300 19,600 34,700 70,800350 486 1,020 1,910 3,930 5,880 11,300 18,100 31,900 65,100400 452 945 1,780 3,650 5,470 10,500 16,800 29,700 60,600450 424 886 1,670 3,430 5,140 9,890 15,800 27,900 56,800500 400 837 1,580 3,240 4,850 9,340 14,900 26,300 53,700550 380 795 1,500 3,070 4,610 8,870 14,100 25,000 51,000600 363 759 1,430 2,930 4,400 8,460 13,500 23,900 48,600650 347 726 1,370 2,810 4,210 8,110 12,900 22,800 46,600700 334 698 1,310 2,700 4,040 7,790 12,400 21,900 44,800750 321 672 1,270 2,600 3,900 7,500 12,000 21,100 43,100800 310 649 1,220 2,510 3,760 7,240 11,500 20,400 41,600850 300 628 1,180 2,430 3,640 7,010 11,200 19,800 40,300900 291 609 1,150 2,360 3,530 6,800 10,800 19,200 39,100950 283 592 1,110 2,290 3,430 6,600 10,500 18,600 37,900

1,000 275 575 1,080 2,230 3,330 6,420 10,200 18,100 36,9001,100 261 546 1,030 2,110 3,170 6,100 9,720 17,200 35,0001,200 249 521 982 2,020 3,020 5,820 9,270 16,400 33,4001,300 239 499 940 1,930 2,890 5,570 8,880 15,700 32,0001,400 229 480 903 1,850 2,780 5,350 8,530 15,100 30,8001,500 221 462 870 1,790 2,680 5,160 8,220 14,500 29,600

NFPA 54/Z223.1 – A05 ROP

42

1,600 213 446 840 1,730 2,590 4,980 7,940 14,000 28,6001,700 206 432 813 1,670 2,500 4,820 7,680 13,600 27,7001,800 200 419 789 1,620 2,430 4,670 7,450 13,200 26,9001,900 194 407 766 1,570 2,360 4,540 7,230 12,800 26,1002,000 189 395 745 1,530 2,290 4,410 7,030 12,400 25,400

[ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 10.0 psi

Pressure Drop 3.0 psiTable 12.24 Schedule 40 Metallic Pipe

Specific Gravity 1.50

SPECIAL USE: Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator)

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 2 1/2 3 4Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Capacity in Thousands of Btu per Hour10 5,890 12,300 23,200 47,600 71,300 137,000 219,000 387,000 789,00020 4,050 8,460 15,900 32,700 49,000 94,400 150,000 266,000 543,00030 3,250 6,790 12,800 26,300 39,400 75,800 121,000 214,000 436,00040 2,780 5,810 11,000 22,500 33,700 64,900 103,000 183,000 373,00050 2,460 5,150 9,710 19,900 29,900 57,500 91,600 162,000 330,00060 2,230 4,670 8,790 18,100 27,100 52,100 83,000 147,000 299,00070 2,050 4,300 8,090 16,600 24,900 47,900 76,400 135,000 275,00080 1,910 4,000 7,530 15,500 23,200 44,600 71,100 126,000 256,00090 1,790 3,750 7,060 14,500 21,700 41,800 66,700 118,000 240,000

100 1,690 3,540 6,670 13,700 20,500 39,500 63,000 111,000 227,000125 1,500 3,140 5,910 12,100 18,200 35,000 55,800 98,700 201,000150 1,360 2,840 5,360 11,000 16,500 31,700 50,600 89,400 182,000175 1,250 2,620 4,930 10,100 15,200 29,200 46,500 82,300 167,800200 1,160 2,430 4,580 9,410 14,100 27,200 43,300 76,500 156,100250 1,030 2,160 4,060 8,340 12,500 24,100 38,400 67,800 138,400300 935 1,950 3,680 7,560 11,300 21,800 34,800 61,500 125,400350 860 1,800 3,390 6,950 10,400 20,100 32,000 56,500 115,300400 800 1,670 3,150 6,470 9,690 18,700 29,800 52,600 107,300450 751 1,570 2,960 6,070 9,090 17,500 27,900 49,400 100,700500 709 1,480 2,790 5,730 8,590 16,500 26,400 46,600 95,100550 673 1,410 2,650 5,450 8,160 15,700 25,000 44,300 90,300600 642 1,340 2,530 5,200 7,780 15,000 23,900 42,200 86,200650 615 1,290 2,420 4,980 7,450 14,400 22,900 40,500 82,500700 591 1,240 2,330 4,780 7,160 13,800 22,000 38,900 79,300750 569 1,190 2,240 4,600 6,900 13,300 21,200 37,400 76,400800 550 1,150 2,170 4,450 6,660 12,800 20,500 36,200 73,700850 532 1,110 2,100 4,300 6,450 12,400 19,800 35,000 71,400900 516 1,080 2,030 4,170 6,250 12,000 19,200 33,900 69,200950 501 1,050 1,970 4,050 6,070 11,700 18,600 32,900 67,200

1,000 487 1,020 1,920 3,940 5,900 11,400 18,100 32,000 65,4001,100 463 968 1,820 3,740 5,610 10,800 17,200 30,400 62,1001,200 442 923 1,740 3,570 5,350 10,300 16,400 29,000 59,2001,300 423 884 1,670 3,420 5,120 9,870 15,700 27,800 56,7001,400 406 849 1,600 3,280 4,920 9,480 15,100 26,700 54,5001,500 391 818 1,540 3,160 4,740 9,130 14,600 25,700 52,5001,600 378 790 1,490 3,060 4,580 8,820 14,100 24,800 50,7001,700 366 765 1,440 2,960 4,430 8,530 13,600 24,000 49,0001,800 355 741 1,400 2,870 4,300 8,270 13,200 23,300 47,6001,900 344 720 1,360 2,780 4,170 8,040 12,800 22,600 46,2002,000 335 700 1,320 2,710 4,060 7,820 12,500 22,000 44,900

[ROP 54/Z223.1–136]

Gas Undiluted PropaneInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.2325 Schedule 40 Metallic Pipe

Specific Gravity 1.50

Pipe Size (in.)Nominal 1/2

3/4 1 11/4 11/2 2 21/2 3 4Actual ID 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 2,676 5,595 10,539 21,638 32,420 62,438 99,516 175,927 358,83520 1,839 3,845 7,243 14,872 22,282 42,913 68,397 120,914 246,62530 1,477 3,088 5,817 11,942 17,893 34,461 54,925 97,098 198,049

NFPA 54/Z223.1 – A05 ROP

43

40 1,264 2,643 4,978 10,221 15,314 29,494 47,009 83,103 169,50450 1,120 2,342 4,412 9,059 13,573 26,140 41,663 73,653 150,22960 1,015 2,122 3,998 8,208 12,298 23,685 37,750 66,735 136,11870 934 1,952 3,678 7,551 11,314 21,790 34,729 61,395 125,22780 869 1,816 3,422 7,025 10,526 20,271 32,309 57,116 116,49990 815 1,704 3,210 6,591 9,876 19,020 30,314 53,590 109,307

100 770 1,610 3,033 6,226 9,329 17,966 28,635 50,621 103,251125 682 1,427 2,688 5,518 8,268 15,923 25,378 44,865 91,510150 618 1,293 2,435 5,000 7,491 14,427 22,995 40,651 82,914175 569 1,189 2,240 4,600 6,892 13,273 21,155 37,398 76,280200 529 1,106 2,084 4,279 6,411 12,348 19,681 34,792 70,96410 2,680 5,590 10,500 21,600 32,400 62,400 99,500 176,000 359,00020 1,840 3,850 7,240 14,900 22,300 42,900 68,400 121,000 247,00030 1,480 3,090 5,820 11,900 17,900 34,500 54,900 97,100 198,00040 1,260 2,640 4,980 10,200 15,300 29,500 47,000 83,100 170,00050 1,120 2,340 4,410 9,060 13,600 26,100 41,700 73,700 150,00060 1,010 2,120 4,000 8,210 12,300 23,700 37,700 66,700 136,00070 934 1,950 3,680 7,550 11,300 21,800 34,700 61,400 125,00080 869 1,820 3,420 7,020 10,500 20,300 32,300 57,100 116,00090 815 1,700 3,210 6,590 9,880 19,000 30,300 53,600 109,000

100 770 1,610 3,030 6,230 9,330 18,000 28,600 50,600 103,000125 682 1,430 2,690 5,520 8,270 15,900 25,400 44,900 91,500150 618 1,290 2,440 5,000 7,490 14,400 23,000 40,700 82,900175 569 1,190 2,240 4,600 6,890 13,300 21,200 37,400 76,300200 529 1,110 2,080 4,280 6,410 12,300 19,700 34,800 71,000250 469 981 1,850 3,790 5,680 10,900 17,400 30,800 62,900300 425 889 1,670 3,440 5,150 9,920 15,800 27,900 57,000350 391 817 1,540 3,160 4,740 9,120 14,500 25,700 52,400400 364 760 1,430 2,940 4,410 8,490 13,500 23,900 48,800450 341 714 1,340 2,760 4,130 7,960 12,700 22,400 45,800500 322 674 1,270 2,610 3,910 7,520 12,000 21,200 43,200550 306 640 1,210 2,480 3,710 7,140 11,400 20,100 41,100600 292 611 1,150 2,360 3,540 6,820 10,900 19,200 39,200650 280 585 1,100 2,260 3,390 6,530 10,400 18,400 37,500700 269 562 1,060 2,170 3,260 6,270 9,990 17,700 36,000750 259 541 1,020 2,090 3,140 6,040 9,630 17,000 34,700800 250 523 985 2,020 3,030 5,830 9,300 16,400 33,500850 242 506 953 1,960 2,930 5,640 9,000 15,900 32,400900 235 490 924 1,900 2,840 5,470 8,720 15,400 31,500950 228 476 897 1,840 2,760 5,310 8,470 15,000 30,500

1,000 222 463 873 1,790 2,680 5,170 8,240 14,600 29,7001,100 210 440 829 1,700 2,550 4,910 7,830 13,800 28,2001,200 201 420 791 1,620 2,430 4,680 7,470 13,200 26,9001,300 192 402 757 1,550 2,330 4,490 7,150 12,600 25,8001,400 185 386 727 1,490 2,240 4,310 6,870 12,100 24,8001,500 178 372 701 1,440 2,160 4,150 6,620 11,700 23,9001,600 172 359 677 1,390 2,080 4,010 6,390 11,300 23,0001,700 166 348 655 1,340 2,010 3,880 6,180 10,900 22,3001,800 161 337 635 1,300 1,950 3,760 6,000 10,600 21,6001,900 157 327 617 1,270 1,900 3,650 5,820 10,300 21,0002,000 152 318 600 1,230 1,840 3,550 5,660 10,000 20,400

[ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCTable 12.24 12.26 Schedule 40 Metallic Pipe

Specific Gravity 1.50

SPECIAL USE:Pipe Sizing Between Single or Second Stage (Low Pressure Regulator) and Appli-ance.

Pipe Size (in.)Nominal Inside: 1/2

3/4 1 11/4 11/2 2 3 31/2 4Actual: 0.622 0.824 1.049 1.38 1.61 2.067 3.068 3.548 4.026

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 291 608 1,145 2,352 3,523 6,786 19,119 27,993 38,99720 200 418 787 1,616 2,422 4,664 13,141 19,240 26,80230 160 336 632 1,298 1,945 3,745 10,552 15,450 21,52340 137 287 541 1,111 1,664 3,205 9,031 13,223 18,42150 122 255 480 984 1,475 2,841 8,004 11,720 16,32660 110 231 434 892 1,337 2,574 7,253 10,619 14,79380 94 197 372 763 1,144 2,203 6,207 9,088 12,661

100 84 175 330 677 1,014 1,952 5,501 8,055 11,221125 74 155 292 600 899 1,730 4,876 7,139 9,945150 67 140 265 543 814 1,568 4,418 6,468 9,011

NFPA 54/Z223.1 – A05 ROP

44

200 58 120 227 465 697 1,342 3,781 5,536 7,712250 51 107 201 412 618 1,189 3,351 4,906 6,835300 46 97 182 373 560 1,078 3,036 4,446 6,193350 42 89 167 344 515 991 2,793 4,090 5,698400 40 83 156 320 479 922 2,599 3,805 5,301

Nominal Inside: 1/23/4 1 11/4 11/2 2 21/2 3 4

Actual: 0.622 0.824 1.049 1.380 1.610 2.067 2.469 3.068 4.026Length (ft) Capacity in Thousands of Btu per Hour

10 291 608 1,150 2,350 3,520 6,790 10,800 19,100 39,00020 200 418 787 1,620 2,420 4,660 7,430 13,100 26,80030 160 336 632 1,300 1,940 3,750 5,970 10,600 21,50040 137 287 541 1,110 1,660 3,210 5,110 9,030 18,40050 122 255 480 985 1,480 2,840 4,530 8,000 16,30060 110 231 434 892 1,340 2,570 4,100 7,250 14,80080 101 212 400 821 1,230 2,370 3,770 6,670 13,600

100 94 197 372 763 1,140 2,200 3,510 6,210 12,700125 89 185 349 716 1,070 2,070 3,290 5,820 11,900150 84 175 330 677 1,010 1,950 3,110 5,500 11,200175 74 155 292 600 899 1,730 2,760 4,880 9,950200 67 140 265 543 814 1,570 2,500 4,420 9,010250 62 129 243 500 749 1,440 2,300 4,060 8,290300 58 120 227 465 697 1,340 2,140 3,780 7,710350 51 107 201 412 618 1,190 1,900 3,350 6,840400 46 97 182 373 560 1,080 1,720 3,040 6,190450 42 89 167 344 515 991 1,580 2,790 5,700500 40 83 156 320 479 922 1,470 2,600 5,300550 37 78 146 300 449 865 1,380 2,440 4,970600 35 73 138 283 424 817 1,300 2,300 4,700650 33 70 131 269 403 776 1,240 2,190 4,460700 32 66 125 257 385 741 1,180 2,090 4,260750 30 64 120 246 368 709 1,130 2,000 4,080800 29 61 115 236 354 681 1,090 1,920 3,920850 28 59 111 227 341 656 1,050 1,850 3,770900 27 57 107 220 329 634 1,010 1,790 3,640950 26 55 104 213 319 613 978 1,730 3,530

1,000 25 53 100 206 309 595 948 1,680 3,4201,100 25 52 97 200 300 578 921 1,630 3,3201,200 24 50 95 195 292 562 895 1,580 3,2301,300 23 48 90 185 277 534 850 1,500 3,0701,400 22 46 86 176 264 509 811 1,430 2,9301,500 21 44 82 169 253 487 777 1,370 2,8001,600 20 42 79 162 243 468 746 1,320 2,6901,700 19 40 76 156 234 451 719 1,270 2,5901,800 19 39 74 151 226 436 694 1,230 2,5001,900 18 38 71 146 219 422 672 1,190 2,4202,000 18 37 69 142 212 409 652 1,150 2,350

[ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 10.0 psi

Pressure Drop 1.0 psiTable 12.2527 Semi-Rigid Copper Tubing

Specific Gravity 1.50

SPECIAL USE:Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pres-sure Regulator)

Tube Size (in.)K & L 1/4

3/81/2

5/83/4 1 11/4 11/2 2 21/2

Nominal:ACR 3/8

1/25/8

3/47/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 513 1,058 2,152 3,760 5,335 11,396 20,516 32,347 67,371 119,19320 352 727 1,479 2,585 3,667 7,832 14,101 22,232 46,303 81,92130 283 584 1,188 2,075 2,944 6,290 11,323 17,853 37,183 65,78540 242 500 1,016 1,776 2,520 5,383 9,691 15,280 31,824 56,30450 215 443 901 1,574 2,234 4,771 8,589 13,542 28,205 49,90160 194 401 816 1,426 2,024 4,323 7,782 12,270 25,556 45,21470 179 369 751 1,312 1,862 3,977 7,160 11,288 23,511 41,59680 166 343 699 1,221 1,732 3,700 6,661 10,502 21,873 38,69790 156 322 655 1,145 1,625 3,471 6,250 9,853 20,522 36,308

100 147 304 619 1,082 1,535 3,279 5,903 9,307 19,385 34,297125 131 270 549 959 1,361 2,906 5,232 8,249 17,181 30,396150 118 244 497 869 1,233 2,633 4,741 7,474 15,567 27,541

NFPA 54/Z223.1 – A05 ROP

45

175 109 225 457 799 1,134 2,423 4,361 6,876 14,321 25,338200 101 209 426 744 1,055 2,254 4,057 6,397 13,323 23,572225 95 196 399 698 990 2,115 3,807 6,002 12,501 22,117250 90 185 377 659 935 1,997 3,596 5,669 11,808 20,891275 85 176 358 626 888 1,897 3,415 5,385 11,215 19,841300 81 168 342 597 847 1,810 3,258 5,137 10,699 18,92910 513 1,060 2,150 3,760 5,330 11,400 20,500 32,300 67,40020 352 727 1,480 2,580 3,670 7,830 14,100 22,200 46,30030 283 584 1,190 2,080 2,940 6,290 11,300 17,900 37,20040 242 500 1,020 1,780 2,520 5,380 9,690 15,300 31,80050 215 443 901 1,570 2,230 4,770 8,590 13,500 28,20060 194 401 816 1,430 2,020 4,320 7,780 12,300 25,60070 179 369 751 1,310 1,860 3,980 7,160 11,300 23,50080 166 343 699 1,220 1,730 3,700 6,660 10,500 21,90090 156 322 655 1,150 1,630 3,470 6,250 9,850 20,500

100 147 304 619 1,080 1,540 3,280 5,900 9,310 19,400125 131 270 549 959 1,360 2,910 5,230 8,250 17,200150 118 244 497 869 1,230 2,630 4,740 7,470 15,600175 109 225 457 799 1,130 2,420 4,360 6,880 14,300200 101 209 426 744 1,060 2,250 4,060 6,400 13,300250 90 185 377 659 935 2,000 3,600 5,670 11,800300 81 168 342 597 847 1,810 3,260 5,140 10,700350 75 155 314 549 779 1,660 3,000 4,730 9,840400 70 144 292 511 725 1,550 2,790 4,400 9,160450 65 135 274 480 680 1,450 2,620 4,130 8,590500 62 127 259 453 643 1,370 2,470 3,900 8,120550 59 121 246 430 610 1,300 2,350 3,700 7,710600 56 115 235 410 582 1,240 2,240 3,530 7,350650 54 111 225 393 558 1,190 2,140 3,380 7,040700 51 106 216 378 536 1,140 2,060 3,250 6,770750 50 102 208 364 516 1,100 1,980 3,130 6,520800 48 99 201 351 498 1,060 1,920 3,020 6,290850 46 96 195 340 482 1,030 1,850 2,920 6,090900 45 93 189 330 468 1,000 1,800 2,840 5,910950 44 90 183 320 454 970 1,750 2,750 5,730

1,000 42 88 178 311 442 944 1,700 2,680 5,5801,100 40 83 169 296 420 896 1,610 2,540 5,3001,200 38 79 161 282 400 855 1,540 2,430 5,0501,300 37 76 155 270 383 819 1,470 2,320 4,8401,400 35 73 148 260 368 787 1,420 2,230 4,6501,500 34 70 143 250 355 758 1,360 2,150 4,4801,600 33 68 138 241 343 732 1,320 2,080 4,3301,700 32 66 134 234 331 708 1,270 2,010 4,1901,800 31 64 130 227 321 687 1,240 1,950 4,0601,900 30 62 126 220 312 667 1,200 1,890 3,9402,000 29 60 122 214 304 648 1,170 1,840 3,830

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubingproducts.[ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCTable 12.2628 Semi-Rigid Copper Tubing

Specific Gravity 1.50

SPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance

Tube Size (in.)

K & L 1/43/8

1/25/8

3/4 1 11/4 11/2 2 21/2Nominal:

ACR 3/81/2

5/83/4

7/8 11/8 13/8 15/8 -- 21/8 -- 25/8Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625

Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435Length (ft) Maximum Capacity in Thousands of Btu per Hour10 45 93 188 329 467 997 1,795 2,830 5,895 10,42920 31 64 129 226 321 685 1,234 1,945 4,051 7,16830 25 51 104 182 258 550 991 1,562 3,253 5,75640 21 44 89 155 220 471 848 1,337 2,784 4,92650 19 39 79 138 195 417 752 1,185 2,468 4,36660 17 35 71 125 177 378 681 1,074 2,236 3,95670 16 32 66 115 163 348 626 988 2,057 3,63980 15 30 61 107 152 324 583 919 1,914 3,38690 14 28 57 100 142 304 547 862 1,796 3,177

NFPA 54/Z223.1 – A05 ROP

46

100 13 27 54 95 134 287 517 814 1,696 3,001125 11 24 48 84 119 254 458 722 1,503 2,660150 10 21 44 76 108 230 415 654 1,362 2,410175 10 20 40 70 99 212 382 602 1,253 2,217200 8.9 18 37 65 92 197 355 560 1,166 2,062225 8.3 17 35 61 87 185 333 525 1,094 1,935250 7.9 16 33 58 82 175 315 496 1,033 1,828275 7.5 15 31 55 78 166 299 471 981 1,736300 7.1 15 30 52 74 158 285 449 936 1,65610 45 93 188 329 467 997 1,800 2,830 5,89020 31 64 129 226 321 685 1,230 1,950 4,05030 25 51 104 182 258 550 991 1,560 3,25040 21 44 89 155 220 471 848 1,340 2,78050 19 39 79 138 195 417 752 1,180 2,47060 17 35 71 125 177 378 681 1,070 2,24070 16 32 66 115 163 348 626 988 2,06080 15 30 61 107 152 324 583 919 1,91090 14 28 57 100 142 304 547 862 1,800

100 13 27 54 95 134 287 517 814 1,700125 11 24 48 84 119 254 458 722 1,500150 10 21 44 76 108 230 415 654 1,360175 NA 20 40 70 99 212 382 602 1,250200 NA 18 37 65 92 197 355 560 1,170250 NA 16 33 58 82 175 315 496 1,030300 NA 15 30 52 74 158 285 449 936350 NA 14 28 48 68 146 262 414 861400 NA 13 26 45 63 136 244 385 801450 NA 12 24 42 60 127 229 361 752500 NA 11 23 40 56 120 216 341 710550 NA 11 22 38 53 114 205 324 674600 NA 10 21 36 51 109 196 309 643650 NA NA 20 34 49 104 188 296 616700 NA NA 19 33 47 100 180 284 592750 NA NA 18 32 45 96 174 274 570800 NA NA 18 31 44 93 168 264 551850 NA NA 17 30 42 90 162 256 533900 NA NA 17 29 41 87 157 248 517950 NA NA 16 28 40 85 153 241 502

1,000 NA NA 16 27 39 83 149 234 4881,100 NA NA 15 26 37 78 141 223 4641,200 NA NA 14 25 35 75 135 212 4421,300 NA NA 14 24 34 72 129 203 4231,400 NA NA 13 23 32 69 124 195 4071,500 NA NA 13 22 31 66 119 188 3921,600 NA NA 12 21 30 64 115 182 3781,700 NA NA 12 20 29 62 112 176 3661,800 NA NA 11 20 28 60 108 170 3551,900 NA NA 11 19 27 58 105 166 3452,000 NA NA 11 19 27 57 102 161 335

Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubingproducts.NA means a flow of less than 10,000 But/hr [ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.2729 Semi-Rigid Copper Tubing

Specific Gravity 1.50

Tube Size (in.)

K & L 1/43/8

1/25/8

3/4 1 11/4 11/2 2 21/2Nominal:ACR 3/8

1/25/8

3/47/8 11/8 13/8 15/8 -- 21/8 -- 25/8

Outside: 0.375 0.500 0.625 0.750 0.875 1.125 1.375 1.625 2.125 2.625Inside: 0.305 0.402 0.527 0.652 0.745 0.995 1.245 1.481 1.959 2.435

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 413 852 1,732 3,027 4,295 9,175 16,517 26,042 54,240 95,96220 284 585 1,191 2,081 2,952 6,306 11,352 17,899 37,279 65,95430 228 470 956 1,671 2,371 5,064 9,116 14,373 29,936 52,96340 195 402 818 1,430 2,029 4,334 7,802 12,302 25,621 45,33050 173 356 725 1,267 1,798 3,841 6,915 10,903 22,708 40,17560 157 323 657 1,148 1,629 3,480 6,266 9,879 20,575 36,40170 144 297 605 1,057 1,499 3,202 5,764 9,088 18,929 33,48980 134 276 562 983 1,394 2,979 5,363 8,455 17,609 31,155

NFPA 54/Z223.1 – A05 ROP

47

90 126 259 528 922 1,308 2,795 5,031 7,933 16,522 29,232100 119 245 498 871 1,236 2,640 4,753 7,493 15,607 27,612125 105 217 442 772 1,095 2,340 4,212 6,641 13,832 24,472150 95 197 400 700 992 2,120 3,817 6,017 12,533 22,173175 88 181 368 644 913 1,950 3,511 5,536 11,530 20,399200 82 168 343 599 849 1,814 3,267 5,150 10,727 18,978225 77 158 321 562 797 1,702 3,065 4,832 10,064 17,806250 72 149 304 531 753 1,608 2,895 4,564 9,507 16,819275 69 142 288 504 715 1,527 2,750 4,335 9,029 15,974300 66 135 275 481 682 1,457 2,623 4,136 8,614 15,24010 413 852 1,730 3,030 4,300 9,170 16,500 26,000 54,20020 284 585 1,190 2,080 2,950 6,310 11,400 17,900 37,30030 228 470 956 1,670 2,370 5,060 9,120 14,400 29,90040 195 402 818 1,430 2,030 4,330 7,800 12,300 25,60050 173 356 725 1,270 1,800 3,840 6,920 10,900 22,70060 157 323 657 1,150 1,630 3,480 6,270 9,880 20,60070 144 297 605 1,060 1,500 3,200 5,760 9,090 18,90080 134 276 562 983 1,390 2,980 5,360 8,450 17,60090 126 259 528 922 1,310 2,790 5,030 7,930 16,500

100 119 245 498 871 1,240 2,640 4,750 7,490 15,600125 105 217 442 772 1,100 2,340 4,210 6,640 13,800150 95 197 400 700 992 2,120 3,820 6,020 12,500175 88 181 368 644 913 1,950 3,510 5,540 11,500200 82 168 343 599 849 1,810 3,270 5,150 10,700250 72 149 304 531 753 1,610 2,900 4,560 9,510300 66 135 275 481 682 1,460 2,620 4,140 8,610350 60 124 253 442 628 1,340 2,410 3,800 7,920400 56 116 235 411 584 1,250 2,250 3,540 7,370450 53 109 221 386 548 1,170 2,110 3,320 6,920500 50 103 209 365 517 1,110 1,990 3,140 6,530550 47 97 198 346 491 1,050 1,890 2,980 6,210600 45 93 189 330 469 1,000 1,800 2,840 5,920650 43 89 181 316 449 959 1,730 2,720 5,670700 41 86 174 304 431 921 1,660 2,620 5,450750 40 82 168 293 415 888 1,600 2,520 5,250800 39 80 162 283 401 857 1,540 2,430 5,070850 37 77 157 274 388 829 1,490 2,350 4,900900 36 75 152 265 376 804 1,450 2,280 4,750950 35 72 147 258 366 781 1,410 2,220 4,620

1,000 34 71 143 251 356 760 1,370 2,160 4,4901,100 32 67 136 238 338 721 1,300 2,050 4,2701,200 31 64 130 227 322 688 1,240 1,950 4,0701,300 30 61 124 217 309 659 1,190 1,870 3,9001,400 28 59 120 209 296 633 1,140 1,800 3,7401,500 27 57 115 201 286 610 1,100 1,730 3,6101,600 26 55 111 194 276 589 1,060 1,670 3,4801,700 26 53 108 188 267 570 1,030 1,620 3,3701,800 25 51 104 182 259 553 1,000 1,570 3,2701,900 24 50 101 177 251 537 966 1,520 3,1702,000 23 48 99 172 244 522 940 1,480 3,090

[Note unchanged] [ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCTable 12.2830 Corrugated Stainless Steel Tubing (CSST)

Specific Gravity 1.50

Tube Size (EHD*)

Flow Desig-nation:

13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Thousands of Btu per Hour5 72 99 181 211 355 426 744 863 1,415 2,830 6,547

10 50 69 129 150 254 303 521 605 971 1,993 4,63815 39 55 104 121 208 248 422 490 775 1,623 3,79120 34 49 91 106 183 216 365 425 661 1,404 3,28525 30 42 82 94 164 192 325 379 583 1,254 2,94030 28 39 74 87 151 177 297 344 528 1,143 2,68440 23 33 64 74 131 153 256 297 449 988 2,32750 20 30 58 66 118 137 227 265 397 884 2,08260 19 26 53 60 107 126 207 241 359 805 1,90270 17 25 49 57 99 117 191 222 330 745 1,76180 15 23 45 52 94 109 178 208 307 696 1,64790 15 22 44 50 90 102 169 197 286 656 1,554

NFPA 54/Z223.1 – A05 ROP

48

100 14 20 41 47 85 98 159 186 270 621 1,475150 11 15 31 36 66 75 123 143 217 506 1,205200 9 14 28 33 60 69 112 129 183 438 1,045250 8 12 25 30 53 61 99 117 163 390 934300 8 11 23 26 50 57 90 107 147 357 854

5 72 99 181 211 355 426 744 863 1,420 2,830 3,270 5,780 6,55010 50 69 129 150 254 303 521 605 971 1,990 2,320 4,110 4,64015 39 55 104 121 208 248 422 490 775 1,620 1,900 3,370 3,79020 34 49 91 106 183 216 365 425 661 1,400 1,650 2,930 3,29025 30 42 82 94 164 192 325 379 583 1,250 1,480 2,630 2,94030 28 39 74 87 151 177 297 344 528 1,140 1,350 2,400 2,68040 23 33 64 74 131 153 256 297 449 988 1,170 2,090 2,33050 20 30 58 66 118 137 227 265 397 884 1,050 1,870 2,08060 19 26 53 60 107 126 207 241 359 805 961 1,710 1,90070 17 25 49 57 99 117 191 222 330 745 890 1,590 1,76080 15 23 45 52 94 109 178 208 307 696 833 1,490 1,65090 15 22 44 50 90 102 169 197 286 656 787 1,400 1,550

100 14 20 41 47 85 98 159 186 270 621 746 1,330 1,480150 11 15 31 36 66 75 123 143 217 506 611 1,090 1,210200 9 14 28 33 60 69 112 129 183 438 531 948 1,050250 8 12 25 30 53 61 99 117 163 390 476 850 934300 8 11 23 26 50 57 90 107 147 357 434 777 854

[Notes unchanged] [ROP 54/Z223.1–133]

Gas Undiluted PropaneInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.2931 Corrugated Stainless Steel Tubing (CSST)

Specific Gravity 1.50

Tube Size (EHD*)

Flow Desig-nation:

13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 426 558 927 1,106 1,735 2,168 4,097 4,720 7,128 15,174 34,20325 262 347 591 701 1,120 1,384 2,560 2,954 4,564 9,549 21,68030 238 316 540 640 1,027 1,266 2,331 2,692 4,176 8,708 19,80140 203 271 469 554 896 1,100 2,012 2,323 3,631 7,529 17,15950 181 243 420 496 806 986 1,794 2,072 3,258 6,726 15,35775 147 196 344 406 663 809 1,457 1,685 2,675 5,480 12,55180 140 189 333 393 643 768 1,410 1,629 2,591 5,303 12,154

100 124 169 298 350 578 703 1,256 1,454 2,325 4,738 10,877150 101 137 245 287 477 575 1,021 1,182 1,908 3,860 8,890200 86 118 213 248 415 501 880 1,019 1,658 3,337 7,705250 77 105 191 222 373 448 785 910 1,487 2,981 6,895300 69 96 173 203 343 411 716 829 1,363 2,719 6,296400 60 82 151 175 298 355 616 716 1,163 2,351 5,457500 53 72 135 158 268 319 550 638 1,027 2,101 4,88310 426 558 927 1,110 1,740 2,170 4,100 4,720 7,130 15,200 16,800 29,400 34,20025 262 347 591 701 1,120 1,380 2,560 2,950 4,560 9,550 10,700 18,800 21,70030 238 316 540 640 1,030 1,270 2,330 2,690 4,180 8,710 9,790 17,200 19,80040 203 271 469 554 896 1,100 2,010 2,320 3,630 7,530 8,500 14,900 17,20050 181 243 420 496 806 986 1,790 2,070 3,260 6,730 7,610 13,400 15,40075 147 196 344 406 663 809 1,460 1,690 2,680 5,480 6,230 11,000 12,60080 140 189 333 393 643 768 1,410 1,630 2,590 5,300 6,040 10,600 12,200

100 124 169 298 350 578 703 1,260 1,450 2,330 4,740 5,410 9,530 10,900150 101 137 245 287 477 575 1,020 1,180 1,910 3,860 4,430 7,810 8,890200 86 118 213 248 415 501 880 1,020 1,660 3,340 3,840 6,780 7,710250 77 105 191 222 373 448 785 910 1,490 2,980 3,440 6,080 6,900300 69 96 173 203 343 411 716 829 1,360 2,720 3,150 5,560 6,300400 60 82 151 175 298 355 616 716 1,160 2,350 2,730 4,830 5,460500 53 72 135 158 268 319 550 638 1,030 2,100 2,450 4,330 4,880

[Notes unchanged] [ROP 54/Z223.1–133]

NFPA 54/Z223.1 – A05 ROP

49

Gas Undiluted PropaneInlet pressure 5.0 psi

Pressure Drop 3.5 psiTable 12.3032 Corrugated Stainless Steel Tubing (CSST)

Specific Gravity 1.50

Tube Size (EHD*)

Flow Desig-nation:

13 15 18 19 23 25 30 31 37 46 48 60 62

Length (ft) Maximum Capacity in Thousands of Btu per Hour10 826 1,065 1,713 2,061 3,153 3,999 7,829 8,945 13,112 28,580 63,78825 509 664 1,092 1,307 2,037 2,554 4,864 5,600 8,395 17,986 40,43630 461 603 999 1,193 1,866 2,336 4,430 5,102 7,682 16,403 36,92840 396 520 867 1,033 1,629 2,029 3,822 4,404 6,679 14,183 32,00450 352 463 777 926 1,463 1,819 3,409 3,929 5,993 12,670 28,64275 284 376 637 757 1,206 1,492 2,769 3,194 4,919 10,322 23,40980 275 363 618 731 1,169 1,446 2,677 3,090 4,768 9,990 22,670

100 243 324 553 656 1,051 1,296 2,388 2,756 4,276 8,925 20,287150 196 262 453 535 866 1,062 1,941 2,241 3,511 7,271 16,581200 169 226 393 464 755 923 1,675 1,934 3,052 6,287 14,369250 150 202 352 415 679 828 1,493 1,726 2,738 5,616 12,859300 136 183 322 379 622 757 1,359 1,572 2,505 5,122 11,745400 117 158 279 328 542 657 1,173 1,356 2,178 4,429 10,178500 104 140 251 294 488 589 1,046 1,210 1,954 3,957 9,10810 826 1,070 1,710 2,060 3,150 4,000 7,830 8,950 13,100 28,600 31,200 54,400 63,80025 509 664 1,090 1,310 2,040 2,550 4,860 5,600 8,400 18,000 19,900 34,700 40,40030 461 603 999 1,190 1,870 2,340 4,430 5,100 7,680 16,400 18,200 31,700 36,90040 396 520 867 1,030 1,630 2,030 3,820 4,400 6,680 14,200 15,800 27,600 32,00050 352 463 777 926 1,460 1,820 3,410 3,930 5,990 12,700 14,100 24,700 28,60075 284 376 637 757 1,210 1,490 2,770 3,190 4,920 10,300 11,600 20,300 23,40080 275 363 618 731 1,170 1,450 2,680 3,090 4,770 9,990 11,200 19,600 22,700

100 243 324 553 656 1,050 1,300 2,390 2,760 4,280 8,930 10,000 17,600 20,300150 196 262 453 535 866 1,060 1,940 2,240 3,510 7,270 8,210 14,400 16,600200 169 226 393 464 755 923 1,680 1,930 3,050 6,290 7,130 12,500 14,400250 150 202 352 415 679 828 1,490 1,730 2,740 5,620 6,390 11,200 12,900300 136 183 322 379 622 757 1,360 1,570 2,510 5,120 5,840 10,300 11,700400 117 158 279 328 542 657 1,170 1,360 2,180 4,430 5,070 8,920 10,200500 104 140 251 294 488 589 1,050 1,210 1,950 3,960 4,540 8,000 9,110

[Notes unchanged] [ROP 54/Z223.1–133]

Gas Undiluted PropaneInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCTable 12.3133 Polyethylene Plastic Pipe

Specific Gravity 1.50

Pipe Size (in.)Nominal OD: 1/2

3/4 1 11/4 11/2 2Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00

Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 340 680 1,227 2,126 3,211 5,76920 233 467 844 1,461 2,207 3,96530 187 375 677 1,173 1,772 3,18440 160 321 580 1,004 1,517 2,72550 142 285 514 890 1,344 2,41560 129 258 466 807 1,218 2,18870 119 237 428 742 1,121 2,01380 110 221 398 690 1,042 1,87390 103 207 374 648 978 1,757

100 98 196 353 612 924 1,660125 87 173 313 542 819 1,471150 78 157 284 491 742 1,333175 72 145 261 452 683 1,226200 67 135 243 420 635 1,14110 340 680 1,230 2,130 3,210 5,77020 233 468 844 1,460 2,210 3,97030 187 375 677 1,170 1,770 3,18040 160 321 580 1,000 1,520 2,73050 142 285 514 890 1,340 2,420

NFPA 54/Z223.1 – A05 ROP

50

60 129 258 466 807 1,220 2,19070 119 237 428 742 1,120 2,01080 110 221 398 690 1,040 1,87090 103 207 374 648 978 1,760

100 98 196 353 612 924 1,660125 87 173 313 542 819 1,470150 78 157 284 491 742 1,330175 72 145 261 452 683 1,230200 67 135 243 420 635 1,140250 60 119 215 373 563 1,010300 54 108 195 338 510 916350 50 99 179 311 469 843400 46 92 167 289 436 784450 43 87 157 271 409 736500 41 82 148 256 387 695

[ROP 54/Z223.1–131]

Gas Undiluted PropaneInlet pressure 2.0 psi

Pressure Drop 1.0 psiTable 12.3234 Polyethylene Plastic Pipe

Specific Gravity 1.50

Pipe Size (in.)

Nominal OD: 1/23/4 1 11/4 11/2 2

Designation: SDR 9.33 SDR 11.0 SDR 11.00 SDR 10.00 SDR 11.00 SDR 11.00Actual ID: 0.660 0.860 1.077 1.328 1.554 1.943Length (ft) Maximum Capacity in Thousands of Btu per Hour

10 3,126 6,259 11,293 19,564 29,545 53,08520 2,148 4,302 7,762 13,446 20,306 36,48530 1,725 3,454 6,233 10,798 16,307 29,29940 1,477 2,957 5,335 9,242 13,956 25,07650 1,309 2,620 4,728 8,191 12,369 22,22560 1,186 2,374 4,284 7,421 11,207 20,13770 1,091 2,184 3,941 6,828 10,311 18,52680 1,015 2,032 3,666 6,352 9,592 17,23590 952 1,907 3,440 5,960 9,000 16,171

100 899 1,801 3,249 5,629 8,501 15,275125 797 1,596 2,880 4,989 7,535 13,538150 722 1,446 2,609 4,521 6,827 12,266175 664 1,331 2,401 4,159 6,281 11,285200 618 1,238 2,233 3,869 5,843 10,49810 3,130 6,260 11,300 19,600 29,500 53,10020 2,150 4,300 7,760 13,400 20,300 36,50030 1,730 3,450 6,230 10,800 16,300 29,30040 1,480 2,960 5,330 9,240 14,000 25,10050 1,310 2,620 4,730 8,190 12,400 22,20060 1,190 2,370 4,280 7,420 11,200 20,10070 1,090 2,180 3,940 6,830 10,300 18,50080 1,010 2,030 3,670 6,350 9,590 17,20090 952 1,910 3,440 5,960 9,000 16,200

100 899 1,800 3,250 5,630 8,500 15,300125 797 1,600 2,880 4,990 7,530 13,500150 722 1,450 2,610 4,520 6,830 12,300175 664 1,330 2,400 4,160 6,280 11,300200 618 1,240 2,230 3,870 5,840 10,500250 548 1,100 1,980 3,430 5,180 9,300300 496 994 1,790 3,110 4,690 8,430350 457 914 1,650 2,860 4,320 7,760400 425 851 1,530 2,660 4,020 7,220450 399 798 1,440 2,500 3,770 6,770500 377 754 1,360 2,360 3,560 6,390550 358 716 1,290 2,240 3,380 6,070600 341 683 1,230 2,140 3,220 5,790650 327 654 1,180 2,040 3,090 5,550700 314 628 1,130 1,960 2,970 5,330750 302 605 1,090 1,890 2,860 5,140800 292 585 1,050 1,830 2,760 4,960850 283 566 1,020 1,770 2,670 4,800900 274 549 990 1,710 2,590 4,650950 266 533 961 1,670 2,520 4,520

1,000 259 518 935 1,620 2,450 4,400

NFPA 54/Z223.1 – A05 ROP

51

1,100 246 492 888 1,540 2,320 4,1701,200 234 470 847 1,470 2,220 3,9801,300 225 450 811 1,410 2,120 3,8101,400 216 432 779 1,350 2,040 3,6601,500 208 416 751 1,300 1,960 3,5301,600 201 402 725 1,260 1,900 3,4101,700 194 389 702 1,220 1,840 3,3001,800 188 377 680 1,180 1,780 3,2001,900 183 366 661 1,140 1,730 3,1102,000 178 356 643 1,110 1,680 3,020

[ROP 54/Z223.1–131]

Table 12.3335Polyethylene Plastic Tub-ing

Gas Undiluted PropaneInlet pressure 11.0 in. WC

Pressure Drop 0.5 in. WCSpecific Gravity 1.50

Plastic Tubing Size (CTS) (in.)Nominal OD: 1/2

3/4Designation: SDR 7.00 SDR 11.00

Actual ID: 0.445 0.927Length

(ft)Maximum Capacity in

Thousands of Btu per Hour10 121 82820 83 56930 67 45740 57 39150 51 34760 46 31470 42 28980 39 26990 37 252

100 35 238125 31 211150 28 191175 26 176200 24 164225 22 154250 21 145275 20 138300 19 132350 18 121400 16 113450 15 106500 15 100

[ROP 54/Z223.1–131]

Chapter 13 Sizing of Category I Venting Systems

[Chapter 13 to be relocated to follow Chapter 10] [R O P54/Z223.1–127]

[13.1 through 13.1.2 unchanged]

13.1.3 Elbows. Single-appliance venting configurations with zero(0) lateral lengths in Tables 13.1, 13.2, and 13.5 shall not have el-bows in the venting system. For vent configurations with laterallengths, the venting tables include allowance for two 90-degreeturns. Single-appliance venting with lateral lengths include two 90-degree elbows. For each additional elbow up to and including 45-degrees, the maximum capacity listed in the venting tables shall bereduced by 5 percent. For each additional elbow greater than 45-degrees up to and including 90-degrees, the maximum capacitylisted in the venting tables shall be reduced by 10 percent. [ROP54/Z223.1–138], [ROP 54/Z223.1–144], [ROP 54/Z223.1–139]

[13.1.4 through 13.1.7 unchanged]

13.1.8. Connection to Chimney Liners. Connections betweenchimney liners and listed double-wall connectors shall be madewith listed adapters designed for such purpose. [ROP54/Z223.1–140]

[13.1.8 unchanged]

13.1.9 Draft Hood Conversion Accessories. Draft hood conver-sion accessories for use with masonry chimneys venting listedCategory I fan-assisted appliances shall be listed and installed inaccordance with the listed accessory manufacturers installation in-structions. [ROP 54/Z223.1–142]

13.1.9 Exterior Chimneys and Vents Locations. Table 13.1through table 13.5 shall only be used for chimneys and vents notexposed to the outdoors below the roof line. A Type B vent or listedchimney lining system passing through an unused masonry chimneyflue shall not be considered to be exposed to the outdoors. A type Bvent passing through an unventilated enclosure or chase insulated toa value of not less than R 8 shall not be considered to be exposed tothe outdoors. Table 13.3 in combination with Table 13.11 shall beused for clay-tile-lined exterior masonry chimneys, provided all ofthe following are met: [ROP 54/Z223.1–141], [ROP54/Z223.1–143]

[(1) through (6) unchanged]

Where these conditions cannot be met, an alternative venting designshall be used, such as a listed chimney lining system.

Exception: Vents serving listed appliances installed in accordancewith the appliance manufacturer’s installation instructions and theterms of the listing. [ROP 54/Z223.1–64a]

[13.1.10 through 13.1.15 unchanged]

[Table 13.1 through Table 13.5 unchanged]

[13.2 through 13.2.8 unchanged]

[Table 13.2.2 unchanged]

13.2.9 Tee and Wye Fittings. Tee and wye fittings connected to acommon vent shall be considered as part of the common vent andconstructed of materials consistent with that of the common vent.[ROP 54/Z223.1–145]

[13.2.9 through 13.2.11 unchanged]

13.2.12 Vent Height. For multiple units of gas utilization equip-ment appliances all located on one floor, available total height (H)shall be measured from the highest draft hood outlet or flue collarup to the level of the outlet of the common vent. [ROP54/Z223.1–126]

[13.2.13 through 13.2.19 unchanged]

13.2.20 Draft Hood Conversion Accessories. Draft hood conver-sion accessories for use with masonry chimneys venting listedCategory I fan-assisted appliances shall be listed and installed inaccordance with the listed accessory manufacturers installation in-structions. [ROP 54/Z223.1–142]

13.2.21 Connections to Chimney Liners. Where double-wall con-nectors are required, tee and wye fittings used to connect to thecommon vent chimney liner shall be listed double-wall fittings.Connections between chimney liners and listed double-wall fittingsshall be made with listed adapter fittings designed for such purpose.[ROP 54/Z223.1–147]

13.2.202 Exterior Chimneys and Vents Locations. Table 13.6through Table 13.10 shall only be used for chimneys and vents notexposed to the outdoors below the roof line. A Type B vent or listedchimney lining system passing through an unused masonry chimney

NFPA 54/Z223.1 – A05 ROP

52

flue shall not be considered to be exposed to the outdoors. A type Bvent passing through an unventilated enclosure or chase insulated toa value of not less than R 8 shall not be considered to be exposed tothe outdoors. Table 13.12(a), Table 13.12(b), Table 13.13(a) andTable 13.13(b) shall be used for clay-tile-lined exterior masonrychimneys, provided all of the following conditions are met: [ROP54/Z223.1–143], [ROP 54/Z223.1–146]

[(1) through(5) unchanged]

Where these conditions cannot be met, an alternative venting designshall be used, such as a listed chimney lining system.

Exception: Vents serving listed appliances installed in accordancewith the appliance manufacturer's installation instructions and theterms of the listing. [ROP 54/Z223.1–64a]

13.2.21 Vent Connector Upsizing Sizing. Vent connectors shallnot be increased more than two sizes greater than the listed appli-ance categorized vent diameter, flue collar diameter, or draft hoodoutlet diameter. Vent connectors for draft hood-equipped appliancesshall not be smaller than the draft hood outlet diameter. Where avent connector size(s) determined from the tables for a fan-assistedappliance(s) is smaller than the flue collar diameter, the use of thesmaller size(s) shall be permitted provided that the installationcomplies with all of the following conditions: [ROP54/Z223.1–148]

[(1) through (3) unchanged]

[13.2.22 through 13.2.26 unchanged]

[Table 13.6 through Table 13.10 unchanged]

Table 13.11 6 Exterior Masonry Chimney

Special Use:Minimum Allowable Input Rating of Space-Heating Appliance in Thousands of Btu perHour

Number of Appliances: One Single

[Remainder of Table 13.11 unchanged] [ROP 54/Z223.1–149]

[Table 13.12a through Table 13.13b unchanged]

Chapter 14 Referenced Publications

[All referenced publications will be updated to their current editionsbefore publication]

[14.1 through 14.1.1 unchanged]

14.1.2 ASTM Publications. American Society for Testing andMaterials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, 610.832.9585, www.astm.org.

ASTM F1973, Standard Specification for Factory AssembledAnodeless Risers and Transition Fittings in Polyethylene (PE) andPolyamide 11 (PA11) Fuel Gas Distribution Systems, 2002 [Addedto Chapter 14 as a result of ROP 54/Z223.1–53]

[Remainder of standards unchanged]

14.1.3 CSA America Publications. CSA America, Inc., 8501 EastPleasant Valley Road, Cleveland, OH 4413-5575, 216.524.4990,www.csa-america.org.

ANSI Z21.41/CSA 6.9,Quick-Disconnect Devices for use withGas Fuel Appliances, 2003 [Added to Chapter 14 as a result ofROP 54/Z223.1–82]

ANSI Z21.75/CSA 6.27, Connectors for Outdoor Gas Appli-ances and Manufactured Homes, 2001 [Added to Chapter 14 as aresult of ROP 54/Z223.1–79]

[Remainder of standards unchanged]

[14.1.4 through 14.1.5 unchanged]

14.1.6 UL Publications. Underwriters Laboratories Inc., 333 Pfing-sten Road, Northbrook, IL 60062-2096, 847.272.8800,www.ul.com.

UL 651, Schedule 40 and Schedule 80 rigid PVC conduit, 2003.[Added to Chapter 14 as a result of ROP 54/Z223.1–43]

[14.1.6 unchanged]

Annex A Explanatory Material

[A.1.5 unchanged]

A.3.3.15 Approved. The American Gas Association, AmericanNational Standards Institute, and the National Fire Protection Asso-ciation does not approve, inspect, or certify any installations, proce-dures, appliances, equipment, or materials; nor do they approve orevaluate testing laboratories. In determining the acceptability of in-stallations, procedures, appliances, equipment, or materials, theauthority having jurisdiction may base acceptance on compliancewith AGA, ANSI, CSA or NFPA, or other appropriate standards. Inthe absence of such standards, said authority may require evidenceof proper installation, procedure, or use. The authority having juris-diction may also refer to the listings or labeling practices [see Sec-tion 3.3.17]of an organization that is concerned with productevaluations and is thus in a position to determine compliance withappropriate standards for the current production of listed items. Ad-ditional information regarding the coordination of appliance design,construction, and maintenance can be found in Annex B. [ROP54/Z223.1–126]

[A.3.3.17 unchanged]

A.3.3.140 Listed. The means for identifying listed appliances andequipment may vary for each organization concerned with productevaluation; some organizations do not recognize appliances andequipment a listed unless it is also labeled. The authority havingjurisdiction should utilize the system employed by the listing orga-nization to identify a listed product. [ROP 54/Z223.1–126]

[A.3.3230 through A.3.3.236 unchanged]

A.5.4.1 The size of gas piping depends upon the following factors:

(1) Allowable loss in pressure [see 5.4.4] from point of delivery toequipment appliance [ROP 54/Z223.1–126]

[(2) through (6) unchanged]

A.5.4.2 To obtain the cubic feet per hour of gas required, divide theBtu per hour rating by the Btu per cubic ft heating value of the gassupplied. The heating value of the gas can be obtained from the lo-cal gas supplier.

Where the ratings of the equipment appliances to be installedare not known, Table 5.4.2.1 shows the approximate demand oftypical appliances by types. [ROP 54/Z223.1–126]

A.5.4.3 Gas Piping Size. The gas-carrying capacities for differentsizes and lengths of iron pipe, or equivalent rigid pipe, andsemirigid tubing are shown in the capacity tables in Chapter 12.

Tables 12.1 through 12.21 indicate approximate capacities forsingle runs of piping. If the specific gravity of the gas is other than0.60, correction factors should be applied. Correction factors for usewith these tables are given in Table C.2.4.

For any gas piping system, for special gas utilization equipmentappliances, or for conditions other than those covered by thecapacity tables in Chapter 12, such as longer runs, greater gasdemands, or greater pressure drops, the size of each gas pipingsystem should be determined by the sizing equations in section 12.3or by standard engineering methods acceptable to the authorityhaving jurisdiction.

NFPA 54/Z223.1 – A05 ROP

53

A suggested procedure with an example of using tables to size agas piping system is presented in Annex C. [ROP 54/Z223.1–126]

[A.5.5.1(1) through A.6.12.5.1 unchanged]

A.6.12.5.4 Additional interlocks might be necessary for safe opera-tion of equipment appliances supplied by the gas-mixing machine.[ROP 54/Z223.1–126]

[A.6.12.6(1) through A.7.1.1 unchanged]

A.7.1.4.3 During pressure tests conducted over long periods of time,such as overnight, the effects of temperature on pressure should beconsidered. Temperature drops can cause a drop in pressure greatenough to be indicated by the test gauge. These temperature dropsmay cause test evaluators to think that a leak exists in the pipingsystem when in fact the pressure drop was caused by a decrease inthe ambient temperature. See example C.7.5. [ROP 54/Z223.1-150]

[A.7.2.3 through A.7.3 unchanged]

A.8.1.1 The American Gas Association, American National Stan-dards Institute, and the National Fire Protection Association do notapprove, inspect, or certify any installations, procedures, appliances,equipment, or materials; nor do they approve or evaluate testinglaboratories. In determining acceptability of installations, or proce-dures, appliances, equipment, or materials, the authority having ju-risdiction can may base acceptance on compliance with AGA,ANSI, CSA or NFPA, or other appropriate standards. In the absenceof such standards, said authority can may require evidence of properinstallation, procedure, or use. The authority having jurisdiction canmay also refer to the listings or labeling practices [see Section3.3.17] of an organization concerned with product evaluations andis thus in a position to determine compliance with appropriate stan-dards for the current production of listed items. Additional informa-tion regarding the coordination of gas utilization equipment appli-ance design, construction, and maintenance can be found in AnnexB. [ROP 54/Z223.1–126]

[A.8.1.6 unchanged]

A.8.3 Special Conditions Created by Mechanical Exhausting orFireplaces. Operation of exhaust fans, ventilation systems, clothesdryers, or fireplaces can create conditions requiring special attentionto avoid unsatisfactory operation of installed gas utilization equip-ment appliances. [ROP 54/Z223.1–126]

[A.8.3.2.1 through A.9.9.2.2 unchanged]

[Tables A.8.3.2.1, A.8.3.2.2 (a), and 8.3.2.2 (b) unchanged]

[Figures A.8.3.2.3 (1), A.8.3.3.1 (1)(a), A.8.3.3.1 (1)(b), A.8.3.3.1(2) and A.8.3.3.2 unchanged]

A.9.12.8 Where exhaust fans are used for ventilation, precautionsmight be necessary to avoid interference with the operation of theequipment appliance. [ROP 54/Z223.1–126]

[A.9.23.1 through A.10.5.5.3 unchanged]

[Figure A.10.8 unchanged]

A.10.6.3.1 Additional information on sizing venting systems can befound in the following:

[(1) unchanged]

(2) The gas equipment appliance manufacturer's instructions[ROP 54/Z223.1–126]

(3) The venting equipment system manufacturer's sizing instruc-tions [ROP 54/Z223.1–126]

(4) Drawings, calculations, and specifications provided by theventing equipment system manufacturer [ROP54/Z223.1–126]

[(5) through (6) unchanged]

Category I appliances may be either draft hood-equipped orfan-assisted combustion system in design. Different vent designmethods are required for draft hood-equipped and fan-assisted com-bustion system appliances.

A.10.7.2 Data on winter design temperature can be found in FigureG.2.4 and the 1993 edition of the ASHRAE Handbook — Funda-mentals. [ROP 54/Z223.1–118]

[A.10.7.5(1) through A.10.8 unchanged]

A.10.10.9.2 See A.10.6.3.1. [ROP 54/Z223.1–123]

[A.10.12.4 unchanged]

[Figure A.10.12.4 unchanged]

A.11.1.1 Burner input shall be checked in accordance with theappliance manufacturer’s installation instructions. If no applianceinstructions are provided, burner input rate can be checked asfollows: [ROP 54/Z223.1–128]

(1) Checking Burner Input Using a Meter (clocking). To check theBtu/hr input rate, the test hand on the gas meter should betimed for at least one revolution and the input determined fromthis timing. Test dials are generally marked 1/2, 1, 2, or 5ft3/revolution depending on the size of the meter. Instructionsfor converting the test hand readings to cubic feet per hour aregiven in Table 11.1.1. This table is provided for specific gaspressures within the meters and give gas flow rate (corrected tostandard conditions) in cubic feet of gas per hour. Standardtemperature is 60°F, and standard pressure is 29.92 inches ofmercury. Measure the time for at least one revolution of a dial.Look up the gas flow rate in Table A.11.1.1.

Gas flow rates can be calculated for meter pressures other thanin these tables in the following manner.

A pressure adjustment factor F should be determined for use inthe gas input calculation for the gas pressure difference ∆Pbetween the meter inlet and the atmosphere. The gas suppliercan provide the pressure at the meter inlet.

The pressure adjustment factor F is calculated with the fol-lowing formula. Table A.11.1.1 was calculated with this for-mula.

( )596.1392.29

596.13

x

xBP +D=F

where:

F is the pressure correction factor.

DP is the meter inlet pressure (inches of water column).

B is the barometric pressure, unadjusted to sea level (inches ofmercury)

NOAA weather reports barometric pressure inches of mercury,adjusted to sea level. The sea level adjustment must be sub-tracted from the barometric pressure reported by NOAAweather. The local sea level adjustment can be obtained fromNOAA.

EXAMPLE:

NOAA reported barometric pressure to be 30.12 inches ofmercury for a city at 250 feet elevation. The barometricpressure adjustment for 250 feet is 0.27 inches of mer-cury. Subtract the local sea level adjustment from theNOAA barometric pressure to get the unadjusted baro-metric pressure.

30.12 - 0.27 = 29.85

The gas flow rate Q is calculated with the following for-mula.

NFPA 54/Z223.1 – A05 ROP

54

CxQ F=

where:Q is gas flow rate at standard conditions (ft3/hr)F is the pressure adjustment factor.C is the timed gas flow rate (ft3/hr)

The gas input rate I is calculated with the following for-mula.

HHVxQI =

where:I is gas input rate (Btu/hr)Q is the gas flow rate at standard conditions (ft3/hr).

HHV is the average Higher Heat Value of the gas at standardtemperature and pressure conditions (Btu/ft3), which can beobtained from the gas supplier.

Appliances can be seriously overfired, if the timed meter gasflow rate used to set input rate is not adjusted for meter pres-sure. At 2 psi meter pressure an appliance would be 13% over-fired, if the gas flow rate is not adjusted for meter pressure.[ROP 54/Z223.1–128]

(2) Checking Burner Input by Using Orifice Pressure Drop andOrifice Size Not Using a Meter. The fixed orifice size for eachburner can be determined in accordance with Table F.1 forutility gases and Table F.2 for undiluted liquefied petroleumgases. [ROP 54/Z223.1–128]

Table A.11.1.1 Gas Flow Rate to Burnerin Cubic Feet per Hour

at Standard Temperature and Pressure

Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psi

Size of Test Meter DialSecondsfor One

Revolution 1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft

3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3

10 183 366 732 1831 185 370 739 1849 205 409 818 2045

11 166 333 666 1665 168 336 672 1681 186 372 744 1859

12 153 305 610 1526 154 308 616 1541 170 341 682 1704

13 141 282 563 1408 142 284 569 1422 157 315 629 1573

14 131 262 523 1308 132 264 528 1320 146 292 584 1461

15 122 244 488 1221 123 246 493 1232 136 273 545 1363

16 114 229 458 1144 116 231 462 1155 128 256 511 1278

17 108 215 431 1077 109 217 435 1087 120 241 481 1203

18 102 203 407 1017 103 205 411 1027 114 227 454 1136

19 96 193 385 964 97 195 389 973 108 215 431 1076

20 92 183 366 915 92 185 370 924 102 205 409 1023

21 87 174 349 872 88 176 352 880 97 195 390 974

22 83 166 333 832 84 168 336 840 93 186 372 930

23 80 159 318 796 80 161 322 804 89 178 356 889

24 76 153 305 763 77 154 308 770 85 170 341 852

25 73 146 293 732 74 148 296 739 82 164 327 818

26 70 141 282 704 71 142 284 711 79 157 315 787

27 68 136 271 678 68 137 274 685 76 151 303 757

28 65 131 262 654 66 132 264 660 73 146 292 730

29 63 126 253 631 64 127 255 637 71 141 282 705

30 61 122 244 610 62 123 246 616 68 136 273 682

31 59 118 236 591 60 119 239 596 66 132 264 660

32 57 114 229 572 58 116 231 578 64 128 256 639

33 55 111 222 555 56 112 224 560 62 124 248 620

34 54 108 215 539 54 109 217 544 60 120 241 602

35 52 105 209 523 53 106 211 528 58 117 234 584

36 51 102 203 509 51 103 205 514 57 114 227 568

37 49 99 198 495 50 100 200 500 55 111 221 553

38 48 96 193 482 49 97 195 486 54 108 215 538

39 47 94 188 469 47 95 190 474 52 105 210 524

40 46 92 183 458 46 92 185 462 51 102 205 511

41 45 89 179 447 45 90 180 451 50 100 200 499

42 44 87 174 436 44 88 176 440 49 97 195 487

43 43 85 170 426 43 86 172 430 48 95 190 476

44 42 83 166 416 42 84 168 420 46 93 186 465

NFPA 54/Z223.1 – A05 ROP

55

Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psi

Size of Test Meter DialSecondsfor One

Revolution 1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft

3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3

45 41 81 163 407 41 82 164 411 45 91 182 454

46 40 80 159 398 40 80 161 402 44 89 178 445

47 39 78 156 390 39 79 157 393 44 87 174 435

48 38 76 153 381 39 77 154 385 43 85 170 426

49 37 75 149 374 38 75 151 377 42 83 167 417

50 37 73 146 366 37 74 148 370 41 82 164 409

Table A.11.1.1 Gas Flow Rate to Burnerin Cubic Feet per Hour

at Standard Temperature and Pressure (Continued)

Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psi

Size of Test Meter DialSecondsfor One

Revolution 1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft

3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3

51 36 72 144 359 36 72 145 362 40 80 160 401

52 35 70 141 352 36 71 142 356 39 79 157 393

53 35 69 138 345 35 70 140 349 39 77 154 386

54 34 68 136 339 34 68 137 342 38 76 151 379

55 33 67 133 333 34 67 134 336 37 74 149 372

56 33 65 131 327 33 66 132 330 37 73 146 365

57 32 64 128 321 32 65 130 324 36 72 144 359

58 32 63 126 316 32 64 127 319 35 71 141 353

59 31 62 124 310 31 63 125 313 35 69 139 347

60 31 61 122 305 31 62 123 308 34 68 136 341

62 30 59 118 295 30 60 119 298 33 66 132 330

64 29 57 114 286 29 58 116 289 32 64 128 320

66 28 55 111 277 28 56 112 280 31 62 124 310

68 27 54 108 269 27 54 109 272 30 60 120 301

70 26 52 105 262 26 53 106 264 29 58 117 292

72 25 51 102 254 26 51 103 257 28 57 114 284

74 25 49 99 247 25 50 100 250 28 55 111 276

76 24 48 96 241 24 49 97 243 27 54 108 269

78 23 47 94 235 24 47 95 237 26 52 105 262

80 23 46 92 229 23 46 92 231 26 51 102 256

82 22 45 89 223 23 45 90 225 25 50 100 249

84 22 44 87 218 22 44 88 220 24 49 97 243

86 21 43 85 213 21 43 86 215 24 48 95 238

88 21 42 83 208 21 42 84 210 23 46 93 232

90 20 41 81 203 21 41 82 205 23 45 91 227

94 19 39 78 195 20 39 79 197 22 44 87 218

98 19 37 75 187 19 38 75 189 21 42 83 209

100 18 37 73 183 18 37 74 185 20 41 82 205

104 18 35 70 176 18 36 71 178 20 39 79 197

108 17 34 68 170 17 34 68 171 19 38 76 189

112 16 33 65 163 17 33 66 165 18 37 73 183

116 16 32 63 158 16 32 64 159 18 35 71 176

120 15 31 61 153 15 31 62 154 17 34 68 170

130 14 28 56 141 14 28 57 142 16 31 63 157

140 13 26 52 131 13 26 53 132 15 29 58 146

150 12 24 49 122 12 25 49 123 14 27 55 136

NFPA 54/Z223.1 – A05 ROP

56

Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psi

Size of Test Meter DialSecondsfor One

Revolution 1/2 ft3 1 ft3 2 ft3 5 ft3 1/2 ft

3 1 ft3 2 ft3 5 ft3 1/2 ft3 1 ft3 2 ft3 5 ft3

160 11 23 46 114 12 23 46 116 13 26 51 128

170 11 22 43 108 11 22 43 109 12 24 48 120

180 10 20 41 102 10 21 41 103 11 23 45 114Note: To convert to Btu per hour, multiply the cubic feet per hour of gas by the Btu per cubic foot heating value of the gas used. [ROP54/Z223.1–128]

[A.11.2 through A.13.2.19 unchanged]

Annex B Coordination of Gas Utilization Appliance andEquipment Design, Construction, and Maintenance [ROP54/Z223.1–126]

[B.1 through B.1.1 unchanged]

B.1.2 The person or agency planning an installation of gas appli-ances and equipment does the following: [ROP 54/Z223.1–126]

[(1) through B.1.3 (3) unchanged]

B.1.4 The gas appliance and equipment manufacturer or builderprovides the following: [ROP 54/Z223.1–126]

(1) Design and construction of all gas appliances or equipmentor assemblies shipped from its plant [ROP 54/Z223.1–126]

(2) Design and construction of all gas appliances or equipmentfabricated, erected, or assembled by the gas appliances orequipment manufacturer or builder in the field [ROP54/Z223.1–126]

[(3) through (4) unchanged]

B.1.5 The person or agency installing the gas appliances or equip-ment and the person or agency authorizing the installation of gasappliances or equipment (purchaser) jointly should do the follow-ing: [ROP 54/Z223.1–126]

(1) Select, erect, or assemble gas appliances and equipment,components, or designs purchased or developed by that per-son or agency

[(2) through (3) unchanged](4) Initially operate the gas appliances or equipment in a safe

manner [ROP 54/Z223.1–126]B.2 Gas Appliance and Equipment Design and ConstructionChecklist. [ROP 54/Z223.1–126]

B.2.1 The basic design and installation should consider the follow-ing:

(1) Suitability of appliance and equipment for process require-ments [ROP 54/Z223.1–126]

[(2) through (6) unchanged]

[B.2.2 through B.2.3 unchanged]

B.2.4 Pipe, fittings, and valves should conform to applicableAmerican National Standards as indicated in Section 5.6. Piping,bushings, and material in fittings should not be selected nor useduntil the following factors have been considered:

[(1) through (5) unchanged]

(6) Arrangement of piping to provide accessibility for applianceand equipment adjustments and freedom from thermal dam-age [ROP 54/Z223.1–126]

B.2.5 Information concerning the characteristics of the gas andelectricity available at the point of utilization should be specific andcomplete. Gas controls and electrical equipment systems should beselected to conform to these characteristics, which include the fol-lowing: [ROP 54/Z223.1–126]

[(1) through (4) unchanged]

[B.2.6 through B.2.7 (3) unchanged]

B.3 Maintenance of Gas Appliances and Equipment.

B.3.1 These recommendations are prepared for maintenance of gasappliances and equipment. Special types of appliances and equip-ment demand special attention. [ROP 54/Z223.1–126]

[B.3.2 through B.3.5 unchanged]

B.3.5.1 A necessary part of the gas appliance or equipment mainte-nance is the proper maintenance of auxiliary devices. Maintenanceinstructions as supplied by the manufacturers of these devicesshould be followed.

B.3.5.2 Gas combustion equipment systems, including blowers, me-chanical mixers, control valves, temperature control instruments, airvalves, and air filters, should be kept clean and should be examinedat frequent regular intervals.

[B.3.5.3 through B.3.6 unchanged]

B.3.7 A necessary part of the gas appliance and equipment mainte-nance is the proper maintenance of the gas piping system. It is rec-ommended that gas piping be inspected and tested for leakage atregular intervals in accordance with the provisions of 7.1.5. Airpiping should be kept internally clean to prevent accumulation ofdust, lint, and grease in air jets and valves. Where conditions war-rant, filters should be installed at the intake to the fans. [ROP54/Z223.1–126]

B.3.8 Stand-by or substitute fuel equipment and systems for gasappliances or equipment should be kept in good operating conditionand tested periodically. [ROP 54/Z223.1–126]

[B.3.9 unchanged]

Annex C Sizing and Capacities of Gas Piping

C.1 General. The first goal of determining the pipe sizing of a fuelgas piping system is to be assured that there is sufficient gas pres-sure at the inlet to each appliance. The majority of systems areresidential, and the appliances will all have the same, or nearly thesame, requirement for minimum gas pressure at the appliance inlet.This pressure will be about 5" W.C., which is enough for properoperation of the appliance regulator to deliver about 3.5" to theburner itself. The pressure drop in the piping is subtracted from thesource delivery pressure to verify that the minimum is available atthe appliance.

There are other systems, however, where the required inlet pressureto the different appliances may be quite varied. In such cases, thegreatest inlet pressure required must be satisfied, as well as the far-thest appliance, which is almost always the critical appliance insmall systems.

There is an additional requirement to be observed besides the ca-pacity of the system at 100% flow. That requirement is that atminimum flow, the pressure at the inlet to any appliance does notexceed the pressure rating of the appliance regulator. This would

NFPA 54/Z223.1 – A05 ROP

57

seldom be of concern in small systems if the source pressure is _ psi(14" W.C.) or less, but it should be verified for systems with greatergas pressure at the point of supply. [ROP 54/Z223.1–152]

C.1 2 General. To determine the size of piping used in a gas pipingsystem, the following factors must be considered:

(1) Allowable loss in pressure from point of delivery to equip-ment appliance [ROP 54/Z223.1–126]

(2) Maximum gas demand

(3) Length of piping and number of fittings

(4) Specific gravity of the gas

(5) Diversity factor

For any gas piping system, or special gas utilization equipment ap-pliance, or for conditions other than those covered by the tablesprovided in this code, such as longer runs, greater gas demands, orgreater pressure drops, the size of each gas piping system should bedetermined by standard engineering practices acceptable to theauthority having jurisdiction. [ROP 54/Z223.1–126]C.2 Description of Tables

C.2.1 General. The quantity of gas to be provided at each outletshould be determined, whenever possible, directly from the manu-facturer's Btu gas input Btu/hr rating of the equipment appliancethat will be installed. In case the ratings of the equipment appliancesto be installed are not known, Table 5.4.2.1 shows the approximateconsumption (in Btu per hour) of certain types of typical householdappliances.

To obtain the cubic feet per hour of gas required, divide the totalBtu/hr input of all equipment appliances by the average Btu heatingvalue per cubic ft of the gas. The average Btu per cubic ft of the gasin the area of the installation can be obtained from the serving gassupplier. [ROP 54/Z223.1–126]

C.2.2 Low Pressure Natural Gas Tables. Capacities for gas at lowpressure [0.5 psig (3.5 kPa gauge) or less] in cubic feet per hour of0.60 specific gravity gas for different sizes and lengths are shown inTable 12.1 and Table 12.2 for iron pipe or equivalent rigid pipe, inTable12.7 through Table 12.9 for smooth wall semi-rigid tubing,and in Table 12.14 through Table 12.16 for corrugated stainlesssteel tubing. Table 12.1 and Table 12.7 are based upon a pressuredrop of 0.3 in. w.c. (75 Pa), whereas Table 12.2, Table 12.8, andTable 12.14 are based upon a pressure drop of 0.5 in. w.c. (125 Pa).Table 12.9, Table 12.15, and Table 12.16 are special low-pressureapplications based upon pressure drops greater than 0.5 in. w.c.(125 Pa). In using these tables 12.9, 12.15 or 12.16, an allowance(in equivalent length of pipe) should be considered for any pipingrun with four or more fittings [see Table C.2.2]. [ROP54/Z223.1–153]

[Table C.2.2 and C.2.4 unchanged]

[Table C.5.1 through C.5.2 unchanged]

[C.2.3 through C.3.3 unchanged]

C.3.4 Pressure Drop per 100' Method. This sizing method is lessconservative than the others, but it allows the designer to immedi-ately see where the largest pressure drop occurs in the system. Withthis information, modifications can be made to bring the total dropto the critical appliance within the limitations that are presented tothe designer.

Follow the procedures described in the Longest Length Method forsteps (1) through (4) and step (9).

For each piping segment, calculate the pressure drop based on pipesize, length as a percentage of 100', and gas flow. Table C.3.1shows pressure drop per 100' for pipe sizes from 1/2" through 2".

The sum of pressure drops to the critical appliance is subtractedfrom the supply pressure to verify that sufficient pressure will beavailable. If not, the layout can be examined to find the high dropsection(s), and sizing selections modified.

Table C.3.1 Thousands of Btu/hr (MBH) of Natural Gas Per 100Feet of Pipe at Various Pressure Drops and Pipe Diameters

Pipe Sizes

InchPressure Dropper 100 ft ininches w.c. _ 3/4 1 1_ 1_ 2

0.2 31 64 121 248 372 716

0.3 38 79 148 304 455 877

0.5 50 104 195 400 600 1160

1.0 71 147 276 566 848 1640

Note: Other values can be obtained by multiplying table MBH val-ues by:

DropTableDropDesired

For example, if it is desired to get flow through 3/4" pipe at 2"/100',multiply the capacity of 3/4" pipe at 1"/100' by the square root ofthe pressure ratio:

.."1.."2

147cwcw

MBH ¥

= 147 x 1.414 = 208 MBH

[ROP 54/Z223.1–152]

[C.3.4 through C.3.6 unchanged]

(1) With the layout developed according to Section 5.1 of thecode, indicate in each section the design gas flow undermaximum operation conditions. For many layouts, the maxi-mum design flow will be the sum of all connected loads.However, in some cases, certain combinations of utilizationequipment appliances will not occur simultaneously (e.g., gasheating and air conditioning). For these cases, the design flowis the greatest gas flow that can occur at any one time. [ROP54/Z223.1–126]

[(2) unchanged]

(3) Determine the minimum pressure required at the inlet to thecritical utilization equipment appliance. Usually, the criticalitem will be the piece of equipment appliance with the highestrequired pressure for satisfactory operation. If several itemshave the same required pressure, it will be the one with thegreatest length of piping from the system inlet. [ROP54/Z223.1–126]

[(4) unchanged]

(5) To use Figure C.6 (a) (low pressure applications), calculate thepiping length from the inlet to the critical utilization equip-ment appliance. Increase this length by 50 percent to allowfor fittings. Divide the allowable pressure drop by theequivalent length (in hundreds of ft) to determine the allow-able pressure drop per hundred ft. Select the pipe size fromFigure C.6 (a) for the required volume of flow. [ROP54/Z223.1–126]

[(6) unchanged]

[Figure C.6(a) through Figure C.6 (b) unchanged]

[C.7 through C.7.4 unchanged]

[Figure C.7.1 through Figure C.7.4 unchanged]

C.7.5 Example 5 - Calculating Pressure Drops due to Tempera-ture Changes A test piping system is installed on a warm autumnafternoon when the temperature is 70 degrees. In accordance with

NFPA 54/Z223.1 – A05 ROP

58

local custom the new piping system is subjected to an air pressuretest at 20 psig. Overnight, the temperature drops and when the in-spector shows up first thing in the morning the temperature is 40degrees.

If the volume of the piping system is unchanged, then the formulabased on Boyle’s and Charles’ law for determining the new pressureat a reduced temperature is as follows:

2

1

2

1

P

P

T

T =

where:T1 = Initial Temperature, absolute (T1 + 459)T2 = Final Temperature, absolute (T2 + 459)P1 = Initial pressure, psia (P1 + 14.7)P2 = Final pressure, psia (P2 + 14.7)

( )( )

( )( )7.14

7.1420

45940

45970

2 ++=

++

P

( )7.147.34

499

529

2 +=P

7.147.322 -=P

psigP 182 =

Therefore, you could expect the gauge to register 18 psig when theambient temperature is 40 Fo. [ROP 54/Z223.1–150]

C.7.6 Example 6 – Pressure Drop per 100 ft of Pipe Method:Using the layout shown in Fig. C.7.1, proceed as follows:

Length to A = 20', with 35MBH. Using 1/2" pipe, Pr Dr = 20'/100'(0.3") = 0.06

Length to B = 15', with 75MBH. Using 3/4" pipe, Pr Dr = 15'/100'(0.3") = 0.045

Sect. 1 = 10', with 110MBH.

Here we have a choice: 1" pipe, which gives 10/100 (0.2) = 0.02 or3/4" 10/100 (0.5+6/43[0.5]) = 0.1(0.57) = 0.06 approx.

Notice that we interpolated the Pr Dr for 110MBH between 104 and147 MBH.

Sect. 2 = 20', with 135MBH.

Here again we have a choice: 1" pipe, which gives 20/100 (0.2+1/2[0.1]) = 0.05 or 3/4" 20/100 (1.0) = 0.5

Notice that we interpolated the PrDr for 135MBH between 121 and148 MBH, but ignored interpolation for the 3/4" pipe (trivial for104 to 147).

Sect. 3 = 30', with 245MBH.

Here we have a choice: 1" pipe, which gives 30/100 (1) = 0.3 or 1-1/4" 30/100 (0.2) = 0.06

Notice that we ignored interpolation for these options, since the ta-ble values are close to the 245MBH carried by that section.

The total pressure drop is the sum of the section approaching A,Sect. 1, and Sect.3, or either of the following, depending on whetherwe need an absolute minimum or can accommodate the larger drop.

Pressure drop to farthest appliance = 0.06 + 0.02 + 0.06 = 0.14, forthe lesser value, or 0.06 + 0.06 + 0.3 = 0.42, for the greater value

Notice that Section 2 and the run to B do not enter into this calcula-tion, provided that the appliances have similar input pressure re-quirements. [ROP 54/Z223.1–152]

Annex D Suggested Method for Checking for Leakage

[D.1 through D.3 (1) unchanged]

[Table D.2 unchanged]

(2) For Gas Systems Using Undiluted Liquefied Petroleum Gas:System Preparation for Propane. A leak check performed onan LP-Gas system being placed back in service should includeall regulators, including appliance regulators, and controlvalves in the system. Accordingly, each individual equipmentappliance shutoff valve should be supplying pressure to itsappliance for the leak check. This check will prove theintegrity of the 100 percent pilot shutoff of each gas valve soequipped, so the manual gas cock of each gas valveincorporating a 100 percent pilot shutoff should be in the onposition. Pilots not incorporating a 100 percent pilot shutoffvalve and all manual gas valves not incorporating safetyshutoff systems are to be placed in the off position prior to leakchecking, by using one of the following methods: [ROP54/Z223.1–126]

[(a) unchanged]

(b) By inserting a 30 pound pressure gauge on the downstream side of the first stage regulator, admitting full linepressure to the system and then closing the container valve.Enough pressure should be released from the system tolower the pressure gauge reading by 5 psi (34.5kPa). Thesystem should be allowed to stand for 3 minutes withoutshowing an increase or a decrease in pressure gaugereading. [ROP 54/Z223.1–156]

[(b) unchanged]

D.4 When Leakage is Indicated. If the meter test hand moves or apressure drop on the gauge is noted, all appliances and equipment oroutlets supplied through the system should be examined to see ifthey are shut off and do not leak. If they are found tight, there is aleak in the piping system. [ROP 54/Z223.1–126]

Annex E Suggested Emergency Procedure for Gas Leaks

[Annex unchanged]

Annex F Flow of Gas through Fixed Orifices

[F.1 through F.1.1 unchanged]

[Table F.1 through F.3 unchanged]

Table F.4 Equivalent Orifice Sizes at High Altitudes (includes4% input reduction for each 1000 ft above sea level) [ROP54/Z223.1–128]

[Remainder of Table unchanged]

Table F.4 Equivalent Orifice Sizes at High Altitudes (includes4% input reduction for each 1000 ft above sea level) (Continued)[ROP 54/Z223.1–128]

[Remainder of Table unchanged]

[F.1.2 unchanged]

Annex G Sizing of Venting Systems Serving AppliancesEquipped with Draft Hoods, Category I Appliances, andAppliances Listed for Use with Type B Vents

[Annex unchanged]

Annex H Recommended Procedure for Safety Inspection of anExisting Appliance Installation

NFPA 54/Z223.1 – A05 ROP

59

H.1 General The following procedure is intended as a guide to aidin determining that an appliance is properly installed and is in a safecondition for continuing use.

This procedure is predicated on central furnace and boilerinstallations, and it should be recognized that generalizedprocedures cannot anticipate all situations. Accordingly, in somecases, deviation from this procedure is necessary to determine safeoperation of the equipment appliance. [ROP 54/Z223.1–126]

[(1) through (16) unchanged]

Annex I Indoor Combustion Air Calculation Examples

[Annex unchanged]

Annex J Example of Combination of Indoor and OutdoorCombustion and Ventilation Opening Design.

J.1 Example of Combustion Combination Indoor and OutdoorCombustion Air Opening Design. Determine the required combi-nation of indoor and outdoor combustion air opening sizes for thefollowing equipment appliance installation example. [ROP54/Z223.1–126]

Example Installation: A fan-assisted furnace and a draft hoodequipped water heater with the following inputs are located in a 15ft x 30 ft basement with an 8 ft ceiling. No additional indoor spacescan be used to help meet the equipment appliance combustion airneeds. [ROP 54/Z223.1–126]

Fan-assisted Furnace Input: 100,000 Btu/hr

Draft Hood Equipped Water Heater Input: 40,000 Btu/hr

Solution

(1) Determine the total available room volume:

Equipment Appliance room volume: [ROP 54/Z223.1–126]

15 ft ¥ 30 ft with an 8 ft ceiling = 3600 ft3

[(2) through (6) unchanged]

Annex K Industry Definitions

[K.1.1 unchanged]

K.1.2 Automatic Damper Regulator. A mechanically orelectrically actuated device designed to maintain a constantdraft on combustion equipment appliances. [ROP54/Z223.1–126]

[K.1.3 through K.1.12 unchanged]

K.1.13 Fireplace, Factory-Built. A fireplace composed oflisted factory-built components assembled in accordancewith the terms of listing manufacturer’s installation instruc-tions to form the completed fireplace. [ROP 54/Z223.1–64a]

[K.1.14 through K.1.25 unchanged]

K.1.26 Household Cooking Gas Appliance, Floor Sup-ported Unit. A self-contained cooking appliance for instal-lation directly on the floor. It has a top section and an ovensection. It may have additional sections. [ROP 54/Z223.1–126]

[K.1.27 through K.1.30 unchanged]

K.1.31 Loads, Connected. Sum of the rated Btu/hr input toindividual gas utilization equipment appliances connected toa piping system. May also be expressed in cubic ft/hr. [ROP54/Z223.1–126]

[K.1.32 through K.1.34 unchanged]

K.1.35 Regulator, Gas Appliance, Adjustable. (1) Springtype, limited adjustment. A regulator in which the regulatingforce acting upon the diaphragm is derived principally from aspring, the loading of which is adjustable over a range of notmore than ± 15 percent of the outlet pressure at the midpointof the adjustment range; (2) Spring type, standard adjust-ment. A regulator in which the regulating force acting uponthe diaphragm is derived principally from a spring, the load-ing of which is adjustable. [ROP 54/Z223.1–126]

K.1.36 Regulator, Gas Appliance, Multistage. A regulatorfor use with a single gas whose adjustment means can be po-sitioned manually or automatically to two or more predeter-mined outlet pressure settings. [ROP 54/Z223.1–126]

K.1.37 Regulator, Gas Appliance, Nonadjustable. (1)Spring type, nonadjustable. A regulator in which the regu-lating force acting upon the diaphragm is derived principallyfrom a spring, the loading of which is not field adjustable;(2) Weight type. A regulator in which the regulating forceacting upon the diaphragm is derived from a weight or com-bination of weights. [ROP 54/Z223.1–126]

[K.1.38 through K.1.59 unchanged]

Annex LReferenced Publications

[Document list will be updated to their current editions before pub-lication]

L.1 This list of documents is included because they pertain to appli-ances, equipment, accessories, materials, and installations that canbe encountered in the application of this code and thus contain use-ful information. The documents are not considered part of the re-quirements of this code. Chapter 13 14 lists the standards that arereferenced in this code. [ROP 54/Z223.1–126]

[L.1.1 through L.2.5 unchanged]

L.1.2.6 CSA Internatonal. CSA International, 8501 East PleasantValley Road, Cleveland, OH 44131-5575, 216.524.4990, www.csa-america.org.

ANSI Z21.41/CGA 6.9, Quick-Disconnect Devices for Use WithGas Fuel Appliances, 1998. [Staff function as a result of ROP54/Z223.1–82]

[Remainder of list unchanged]

[L.2.7 through L.3 unchanged]