electric point of use water heaters · water heaters electric point of use the purpose of this...

Water HeatersElectric Point of Use

The purpose of this manual is twofold: one, to provide the installerwith the basic directions and recommendations for the properinstallation and adjustment of the water heater; and two, for theowner–operator, to explain the features, operation, safetyprecautions, maintenance and troubleshooting of the water heater.This manual also includes a parts list.

It is imperative that all persons who are expected to install, operateor adjust this water heater read the instructions carefully so they mayunderstand how to perform these operations. If you do notunderstand these instructions or any terms within it, seekprofessional advice.

Any questions regarding the operation, maintenance, service orwarranty of this water heater should be directed to the seller fromwhom it was purchased. If additional information is required, refer tothe section on “If you need service.”

Do not destroy this manual. Please read carefully and keep in asafe place for future reference.

Recognize this symbol as an indication of ImportantSafety Information!

California Proposition 65 Warning: This product containschemicals known to the State of California to cause cancer,birth defects or other reproductive harm.

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2½ through 30 Gallon Capacity120 and 240 Volt Models

®

LISTED786H

AP10227-10 (11/03) Printed in USA

Use & Care ManualWith Installation Instructions for the Installer

IMPORTANT SAFETY INSTRUCTIONSWARNING—When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to personsshould be followed, including:

READ ALL INSTRUCTIONS BEFORE USING THISWATER HEATER.The cord and plug connected water heater covered in thismanual (21/2 gallon models) must be grounded. Connectonly to properly grounded outlet. See “ElectricalConnections” section on page 8.Install or locate this water heater in accordance with theprovided installation instructions.Use this water heater only for its intended use asdescribed in this manual.As with any appliance, close supervision is necessarywhen used by children.

Do Not use an extension cord set with this water heater. Ifno receptacle is available adjacent to the water heater,contact a qualified electrician to have one properly installed.Do Not operate this water heater if it has a damaged cordor plug, if it is not working properly, or if it has beendamaged or dropped.This water heater should be serviced only by qualifiedservice personnel. Contact nearest authorized servicecenter for examination, repair or adjustment.

SAVE THESEINSTRUCTIONS

Safety InformationSafety Precautions . . . . . . 3, 4

Installation InstructionsLocation . . . . . . . . . . . . . . . . 5

Water Connections. . . . . . . . . 6

Electrical Connections. . . . . . 8

Operating InstructionsSafety Controls . . . . . . . . . . 12

Water Temperature . . . . . . . 13

Care and CleaningDraining . . . . . . . . . . . . . . . 14

Maintenance . . . . . . . . . . . . 14

Extended Shut-Down . . . . . 14

Troubleshooting TipsBefore You CallFor Service . . . . . . . . . . . . . 15

Customer ServiceParts List . . . . . . . . . . . . 16-18

If You Need Service . . . . . . 19

Wiring Diagram. . . . . . . . . 20

2

Inside you will find many helpful hints on how to use and maintainyour water heater properly. Just a little preventive care on your partcan save you a great deal of time and money over the life of yourwater heater.

You’ll find many answers to common problems in the Before YouCall For Service section. If you review our chart of TroubleshootingTips first, you may not need to call for service at all.

READ THIS MANUAL

FOR YOUR RECORDSWrite the model and serial numbers here:

##You can find them on a label on the appliance.

Staple sales slip or cancelled check here. Proof of the original purchase date is needed to obtain service underthe warranty.

Your safety and the safety of others are very important. Thereare many important safety messages in this manual and onyour appliance. Always read and obey all safety messages.

This is the safety alert symbol. Recognize this symbolas an indication of Important Safety Information!This symbol alerts you to potential hazards that cankill or hurt you and others.

All safety messages will follow the safety alert symbol andeither the word “DANGER”, “WARNING”, “CAUTION” or“NOTICE”.These words mean:

DANGER An imminently hazardous situation that will result in death or serious injury.

WARNING A potentially hazardous situation that could result in death or serious injuryand/or damage to property.

CAUTION A potentially hazardous situation that may result in minor or moderate injury.

Notice: Attention is called to observe a specified procedure or maintain a specific condition.

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READ THE SAFETY INFORMATION

Time/Temperature Relationship in Scalds

Temperature Time To Produce a Serious Burn

120°F More than 5 minutes125°F 11/2 to 2 minutes130°F About 30 seconds135°F About 10 seconds140°F Less than 5 seconds145°F Less than 3 seconds150°F About 11/2 seconds155°F About 1 second

Table courtesy of Shriners Burn Institute

The chart shown above may be used as a guide in determining the proper water temperature for yourhome.NOTICE: Households with small children, disabled, or elderly persons may require a 120°F or lower thermostatsetting to prevent contact with “HOT” water.

The temperature of the water in the heater isregulated by the adjustable surface mountedthermostat(s) located behind the jacket accesspanel(s). Dual element heaters have two thermostats.To comply with safety regulations the thermostat(s)were set at 120°F before the water heater wasshipped from the factory.

The illustration at the leftshows the temperatureadjustment dial used forsetting the watertemperature.

Refer to the OperatingInstructions in thismanual for detailedinstructions in how toadjust the thermostat(s).

DANGER: Hotter water increases the potential forHot Water SCALDS.

D A N G E R!

HOT

Water temperature over 125°F cancause severe burns instantly ordeath from scalds.

Children, disabled and elderly areat highest risk of being scalded.

See instruction manual beforesetting temperature at waterheater.Feel water before bathing orshowering.Temperature limiting valves areavailable, see manual.

BURN

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T R

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T

TURN OFFPOWERBEFORE

SERVICING

90°F150°F

125°F

IMPORTANT SAFETY INFORMATION.READ ALL INSTRUCTIONS BEFORE USING.

3

Reset button

Thermostatprotective

cover

Thermostatdial pointer

WARNING!WATER TEMPERATURE ADJUSTMENTSafety and energy conservation are factors to be considered when selecting the watertemperature setting of water heater’s thermostat. Water temperatures above 125°F can causesevere burns or death from scalding. Be sure to read and follow the warnings outlined on thelabel pictured below. This label is also located on the water heater near the thermostat accesspanel.

NOTICE: Mixing valves are available for reducing pointof use water temperature by mixing hot and cold water inbranch water lines. Contact a licensed plumber or thelocal plumbing authority for further information.

4

IMPORTANT SAFETY INFORMATION.READ ALL INSTRUCTIONS BEFORE USING.

WARNING!For your safety, the information in this manual must be followed to minimize the risk offire or explosion, electric shock, or to prevent property damage, personal injury, or loss oflife.

Be sure to read and understand the entire Use and Care Manual before attempting toinstall or operate this water heater. It may save you time and cost. Pay particularattention to the Safety Instructions. Failure to follow these warnings could result inserious bodily injury or death. Should you have problems understanding the instructionsin this manual, or have any questions, STOP, and get help from a qualified servicetechnician, or the local electric utility.

FOR INSTALLATIONS IN THE STATE OF CALIFORNIACalifornia Law requires that residential water heaters must be braced, anchored or strapped toresist falling or horizontal displacement due to earthquake motions. For residential waterheaters up to 52 gallon capacity, a brochure with generic earthquake bracing instructions can beobtained from: Office of the State Architect, 400 P Street, Sacramento, CA 95814 or you maycall 916-324-5315 or ask a water heater dealer.

However, applicable local codes shall govern installation. For residential water heaters of a capacity greater than 52 gallons, consult the local building jurisdiction for acceptablebracing procedures.

READ AND FOLLOW THIS SAFETY INFORMATIONCAREFULLY.

SAVE THESE INSTRUCTIONS

Have the installer show you the location of the circuit breaker and how to shut it off ifnecessary. Turn off the circuit breaker if the water heater has been subjected to overheating,fire, flood, physical damage or if the ECO fails to shut off.

● Read this manual entirely before installingor operating the water heater.

● Use this appliance only for its intendedpurpose as described in this Use and CareManual.

● Be sure your appliance is properly installedin accordance with local codes and theprovided installation instructions.

● Do not attempt to repair or replace any partof your water heater unless it is specificallyrecommended in this manual. All otherservicing should be referred to a qualifiedtechnician.

SAFETY PRECAUTIONS

Installing the water heater.The location chosen for the water heater must take into consideration the following:

Local Installation RegulationsThis water heater must be installed inaccordance with these instructions, localcodes, utility codes, utility companyrequirements or, in the absence of localcodes, the latest edition of the National

Electrical Code. It is available from somelocal libraries or can be purchased fromthe National Fire Protection Association,Batterymarch Park, Quincy, MA 02269 asbooklet ANSI/NFPA 70.

LocationThis water heater is designed to meet awide range of applications. It fulfills ademand for a small water heater that can beinstalled in a limited space such as undercountertops, in cabinets or in a closet.

Locate the water heater in a clean dry areaas near as practical to hot water fixtures,or close to the water faucet mostfrequently used.

Locate the water heater in a clean dry areaas near as practical to the area of greatestheated water demand. Long uninsulated hotwater lines can waste energy and water.

Place the water heater in such a mannerthat the thermostat and element accesspanels can be removed to permitinspection and servicing such as removalof elements or checking controls.

The water heater and water lines should be protected from freezingtemperatures. Do not install the waterheater in outdoor, unprotected areas.

Make certain the floor underneath thewater heater is strong enough tosufficiently support the weight of thewater heater once it is filled with water.

CAUTION: The water heater should notbe located in an area where leakage of thetank or connections will result in damage tothe area adjacent to it or to lower floors ofthe structure. Where such areas cannot beavoided, it is recommended that a suitablecatch pan, adequately drained, be installedunder the water heater.

A—Diameter of waterheater plus 2″ min.

B—Maximum 2″

NOTICE: Auxiliary catch pan MUST conform to local codes.Catch Pan Kits are available from the store where the water heaterwas purchased, or any water heater distributor.

B

A

To open drain, lineshould be at least 3/4″ IDand pitched for properdrainage.

5

Inspect ShipmentInspect the water heater for possible damage. Check the markings on the rating plate ofthe water heater to be certain the power supply corresponds to the water heaterrequirements.

Installing the water heater.Thermal Expansion

Water Supply Connections

Determine if a check valve exists in the inletwater line. It may have been installed in thecold water line as a separate back flowpreventer, or it may be part of a pressurereducing valve, water meter or water softener.A check valve located in the cold water inletline can cause what is referred to as a “closedwater system.” A cold water inlet line with nocheck valve or back flow prevention device isreferred to as an “open” water system.As water is heated, it expands in volume andcreates an increase in pressure within the watersystem. This action is referred to as “thermalexpansion.” In an “open” water system,expanding water which exceeds the capacity ofthe water heater flows back into the city mainwhere the pressure is easily dissipated. A “closed water system,” however, prevents theexpanding water from flowing back into themain supply line, and the result of “thermalexpansion” can create a rapid and dangerouspressure increase in the water heater and thesystem piping. This rapid pressure increase canquickly reach the safety setting of the relief

valve, causing it to operate during each heatingcycle. Thermal expansion, and the resultingrapid and repeated expansion and contraction ofcomponents in the water heater and pipingsystem can cause premature failure of the reliefvalve, and possibly the heater itself. Replacingthe relief valve will not correct the problem. The suggested method of controlling thermalexpansion is to install an expansion tank in thecold water line between the water heater andthe check valve. The expansion tank isdesigned with an air cushion built in thatcompresses as the system pressure increases,thereby relieving the over pressure conditionand eliminating the repeated operation of therelief valve. Other methods of controllingthermal expansion are also available. Contactyour installing contractor, water supplier, orplumbing inspector for additional informationregarding this subject.

NOTICE: Do not apply heat to the HOT or COLDwater connections. If sweatconnections are used, sweat tubingto adapter before fitting adapter tothe water connections on heater.Any heat applied to the watersupply fittings will permanentlydamage the dip tube and/or heattraps.

6

Refer to the illustrations on the followingpage for suggested typical installation. Theinstallation of unions or flexible copperconnectors is recommended on the hot andcold water connections so that the waterheater may be easily disconnected forservicing. Connect cold water supply line to3/4” pipe connection near bottom of waterheater on the 6 gallon and 20 gallon models.Install a shut-off valve and a drain valve(not supplied with heater, except 2 1/2 gal.

models) in cold water line near water heater.Connect hot water line to 3/4” pipeconnection marked HOT on side near top ofwater heater. On the 2 1/2 gallon models,the hot and cold water connections are 1/2”pipe connections and are located on top ofthe heater. Local codes may require an anti-siphon device on the water inlet of a sideconnect water heater.

Typical Installation

Recommendedheat trap

6″ minimum

Hot water outletto fixtures

6″ air gap

Suitable open drain

6″

Union

Temperature &pressure relief

valve

Cold water supplyTo cold watersupply

Shut-off valve

Reliefvalvedischargeline tosuitableopendrain

Unions

*The drain valve is located below and to the right of jacket access panel and isnot visible in this view.

Anode

Jacketaccesspanel

Power supplycord 21/2 gal.models only

Temperature &pressure reliefvalve

Openingfor 1/2″or 3/4″electricalfitting

(use only copperconductors)

Auxiliary catch pan

Reliefvalvedischargeline

Shut-off valve

Drain valve*

Jacket accesspanel

Hot wateroutlet(to fixtures)

Auxiliarycatch pan

Auxiliary catchpan drain line

Auxiliary catch pan drainline

Suitable open drain

7

WARNING: The pressurerating of the relief valve mustnot exceed 150 PSI, themaximum working pressure ofthe water heater as marked on the rating plate.

Relief ValveThe Btuh rating of the relief valve mustnot be less than the input rating of thewater heater as indicated on the ratinglabel located on the front of the heater (1 watt=3.412 Btuh).

Connect the outlet of the relief valve to asuitable open drain so that the dischargewater cannot contact live electrical parts orpersons and to eliminate potential waterdamage.

Piping used should be of a type approvedfor hot water distribution. The dischargeline must be no smaller than the outlet ofthe valve and must pitch downward fromthe valve to allow complete drainage (bygravity) of the relief valve and dischargeline. The end of the discharge line shouldnot be threaded or concealed and shouldbe protected from freezing. No valve ofany type, restriction or reducer couplingshould be installed in the discharge line.

A new combination temperature and pressure relief valve, complying with the Standard for ReliefValves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is suppliedand must be installed in the opening provided and marked for the purpose on the water heater. Novalve of any type should be installed between the relief valve and the tank. Local codes shall govern theinstallation of relief valves.

Drain valve(not supplied)

To Fill the Water HeaterWARNING: The tank must be full of

water before heater is turned on. The waterheater warranty does not cover damage orfailure resulting from operation with anempty or partially empty tank.

Make certain the drain valve is completelyclosed.

Open the shut-off valve in the cold watersupply line.

Open each hot water faucet slowly toallow the air to vent from the water heaterand piping.

A steady flow of water from the hot waterfaucet(s) indicates a full water heater.

CAUTION: The presence ofwater in the piping and waterheater does not providesufficient conduction for aground. Non-metallic piping,dielectric unions, flexibleconnectors etc. can cause thewater heater to be electricallyisolated.

Electrical ConnectionsAll wiring must conform to local codes orlatest edition of National Electrical CodeANSI/NFPA 70.The voltage requirements and wattage loadfor the water heater are specified on therating plate on the front of the water heater.21/2 gallon models are supplied with a plugconnected power supply cord for use onlyin 120 VAC applications. The cord mustbe connected to a properly groundedreceptacle on a branch circuit with copperconductors, an over current protectiondevice and a suitable disconnect means. Ifdesired, straight field wiring connectionscan be made to these models by removingthe access cover on front of heater anddisconnecting the cord set from thethermostat and the grounding plug. Removethe cord set and strain relief bushing fromthe junction bracket. The hole in thejunction bracket will accommodate 1/2″ or3/4″ electrical fittings. Refer to wiringdiagrams in the back of this manual forwiring connections.

6 through 30 gallon models are completelywired to the junction bracket inside jacketat front of water heater. An opening for1/2″ or 3/4″ electrical fitting is providedfor field wiring connections. A separatebranch circuit with copper conductors,overcurrent protective device and suitabledisconnecting means must be provided bya qualified electrician. Refer to wiringdiagrams in the back of this manual forwiring connections.The branch circuit wiring should includeeither:

Metallic conduit or metallic sheathedcable approved for use as a groundingconductor and installed with fittingsapproved for the purpose.Non-metallic sheathed cable, metallicconduit or metallic sheathed cablenot approved for use as a groundconductor shall include a separateconductor for grounding. It should beattached to the ground terminals ofthe water heater and the electricaldistribution box.

8

Installing the water heater.

NOTICE: This guiderecommends minimumbranch circuit sizing andwire size based on NationalElectric Code. Refer towiring diagrams in thismanual for field wiringconnections.

Branch Circuit Sizing and Wire Size Guide

Total Water Recommended Over Current Protection Copper Wire Size AWG Based Heater Wattage (fuse or circuit breaker amperage rating) on N.E.C. Table 310-16 (75°C.)

120V 208V 240V 120V 208V 240V1500* 20 15 15 12 14 141700 20 15 15 12 14 142000 25 15 15 10 14 142500 30 15 15 10 14 143000 35 20 20 8 12 123500 – 25 20 – 10 123800 – 25 20 – 10 124000 – 25 25 – 10 104500 – 30 25 – 10 105000 – 30 30 – 10 105500 – 35 30 – 8 106000 – 40 35 – 8 89000 – – 50 – – 8

*Less than 1500 watts may be wired 14 gauge with 15 amp protection. Check Local Electrical Codes, as they will also apply.

CondensationCondensation can form on the tank whenit is first filled with water. Condensationmight also occur with a heavy water drawand very cold inlet water temperature.

This condition is not unusual, and willdisappear after the water becomes heated.If, however, the condensation continues,examine the piping and fittings forpossible leaks.

Additional information on this subjectmay be found at www.rheem.com under“Library”. Scroll down to the TechnicalService Bulletins 1300 Series Section andchoose Bulletin #1303.

For increased energy efficiency, somewater heaters have been supplied withtwo 24” sections of pipe insulation.

Please install the insulation, according tothe illustrations above, that best meetsyour requirements.

RELIEF VALVECOLD

HOT

Typical vertical pipingarrangement

RELIEF VALVECOLD

HOT

Typical horizontal pipingarrangement

Hot and Cold Pipe Insulation Installation

Typical side pipingarrangement

Insulation blankets, available to thegeneral public, for external use on electricwater heaters are not necessary. Thepurpose of an insulation blanket is toreduce the standby heat loss encounteredwith storage tank heaters. This waterheater meets or exceeds the NationalAppliance Energy Conservation Actstandards with respect to insulation andstandby loss requirements making aninsulation blanket unnecessary.

The manufacturer’s warranty does notcover any damage or defect caused byinstallation, attachment or use of any type of energy saving or otherunapproved devices (other than thoseauthorized by the manufacturer) into, ontoor in conjunction with the water heater.The use of unauthorized energy savingdevices may shorten the life of the waterheater and may endanger life and property.

The manufacturer disclaims anyresponsibility for such loss or injuryresulting from the use of suchunauthorized devices.

CAUTION: If local codes require theapplication of an external insulationblanket to this water heater, pay carefulattention to the following so as not torestrict the proper function andoperation of the water heater:

Do not cover the operating or warninglabels attached to the water heater orattempt to relocate them on the exteriorof insulation blanket.

Do not apply insulation to the top of thewater heater. this could interfere withthe safe operation of the electricaljunction box.

Do not cover the jacket access panel(s)to the thermostat(s) and heatingelement(s), or pressure and temperaturerelief valve.

Inspect the insulation blanket frequently.

WARNING: If localcodes require externalapplication of insulationblanket kits themanufacturer’s instructionsincluded with the kit mustbe carefully followed.

Insulation Blankets

9

10

Installing the water heater.

For increased energy efficiency, somewater heaters have been supplied witha 2-3/8” section of pipe insulation.

Please install the insulation, according tothe illustrations above, that best meetsyour requirements.

Slip the insulation cover over the T&PValve through the center hole and alignthe hole in the side with the opening ofthe T&P Valve.

RELIEF VALVECOLD

HOT

Typical top connection arrangement Typical side connection arrangement

Relief Valve Insulation Installation

CAUTION: Ensure theT&P Valve opening is notobstructed by the insulation.

Heat TrapFor increased energy efficiency, somewater heaters have been supplied withfactory installed internal or external heattraps in the hot outlet and cold water inletopenings.

NOTICE: Do not apply heat to the HOT orCOLD water connections. If sweatconnections are used, sweat tubing toadapter before fitting adapter to the waterconnections on heater. Any heat applied tothe water supply fittings will permanentlydamage the dip tube and/or heat traps.

11

Installation Checklist A. Water Heater Location

B. Water Supply

C. Relief Valve

D. Wiring

❑ Close to area of heated water demand.

❑ Indoors and protected from freezing temperatures.

❑ Area free of flammable vapors.

❑ Provisions made to protect area from water damage.

❑ Sufficient room to service heater.

❑ Water heater completely filled with water.

❑ Air purged from water heater and piping.

❑ Water connections tight and free of leaks.

❑ Temperature and Pressure Relief Valve properly installed and discharge line run to open drain.

❑ Discharge line protected from freezing.

❑ Power Supply voltage agrees with waterheater rating plate.

❑ Branch circuit wire and fusing or circuitbreaker of proper size.

❑ Electrical connections tight and unit properlygrounded.

12

Safety PrecautionsDo turn off power to water heater ifit has been subjected to over heating,fire, flood, physical damage.

Do Not turn on water heater unless itis filled with water.

Do Not turn on water heater if coldwater supply shut-off valve is closed.

If there is any difficulty inunderstanding or following theOperating Instructions or the Care and Cleaning section, it isrecommended that a qualified personor serviceman perform the work.

Operating the water heater.CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a

long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate suchgas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sinkbefore using any electrical appliance connected to the hot water system. If hydrogen is present, there will be an unusual soundsuch as air escaping through the pipe as the water begins to flow. Do not smoke or use an open flame near the faucet at thetime it is open.

CAUTION: The cause of the high temperaturecondition must be investigatedby qualified service technicianand corrective action must be taken before placing thewater heater in service again.

Safety ControlsThe water heater is equipped with acombination thermostat and temperaturelimiting control (ECO) that is locatedabove the heating element in contact withthe tank surface. If for any reason the watertemperature becomes excessively high, thetemperature limiting control (ECO) breaksthe power circuit to the heating element.Once the control opens, it must be resetmanually.

To reset the temperature limiting control:

Turn off the power to the waterheater.

Remove the jacket access panel(s)and insulation.

The thermostat protective covershould not be removed.

Press the red RESET button.

Replace the insulation and jacketaccess panel(s) before turning on thepower to the water heater.

Emergency InstructionsWARNING: If the water heater has been

subjected to flood, fire, or physical damage,turn off power and water to the waterheater.

Do not operate the water heater again untilit has been thoroughly checked byqualified service personnel.

13

If adjustment is necessary…Turn off the power to the waterheater.

Remove the jacket access panel(s)and insulation exposing thethermostat(s).

The thermostat protective cover(s)should not be removed.

Using a small screwdriver, set thethermostat(s) dial pointer(s) to the desired temperature.

Replace the insulation and jacketaccess panel(s). Turn on the power tothe water heater.

R

ES

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T R

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E

T

TURN OFFPOWERBEFORE

SERVICING

90°F150°F

125°F

Type 59T thermostat andprotective cover.

Time/Temperature Relationship in ScaldsTemperature Time To Produce a Serious Burn

120°F More than 5 minutes125°F 11/2 to 2 minutes130°F About 30 seconds135°F About 10 seconds140°F Less than 5 seconds145°F Less than 3 seconds150°F About 11/2 seconds155°F About 1 second

Table courtesy of Shriners Burn Institute

DANGER: There is a hotwater scald potential if thethermostat is set too high.Households with smallchildren, disabled, or elderlypersons may require a 120°For lower thermostat setting toprevent contact with HOTwater.

Water Temperature SettingThe temperature of the water in the waterheater can be regulated by setting thetemperature dial of the adjustable surfacemounted thermostat(s) located behind thejacket access panel(s).

Dual element heaters have twothermostats.

Safety and energy conservation are factorsto be considered when selecting the watertemperature setting of the water heater’sthermostat(s). The lower the temperaturesetting, the greater the savings in energyand operating costs.

To comply with safety regulations thethermostat(s) are factory set at 120°F orless where local codes require. This is therecommended starting point.

Water temperatures above 125°F can cause severe burns or death fromscalding. Be sure to read and follow thewarnings outlined in this manual and onthe label on the water heater. This label islocated on the water heater near thethermostat access panel.

Mixing valves are available for reducingpoint of use water temperature by mixinghot and cold water in branch water lines.Contact a licensed plumber or the localplumbing authority for furtherinformation.

The chart below may be used as a guide indetermining the proper water temperaturefor your home.

Reset button


cover

Thermostatdial pointer

14

Routine Preventative MaintenanceProperly maintained, your water heaterwill provide years of dependable trouble-free service.

It is suggested that a routine preventivemaintenance program be established andfollowed by the user.

It is further recommended that a periodicinspection of the operating controls,heating element and wiring should bemade by service personnel qualified inelectric appliance repair.

Most electrical appliances, even whennew, make some sound when in operation.If the hissing or singing sound levelincreases excessively, the electric heatingelement may require cleaning. Contact aqualified installer or plumbing contract toinspect.

At least once a year, lift and release thelever handle on the temperature pressurerelief valve, located near the top of thewater heater, to make certain the valveoperates freely. Allow several gallons toflush through the discharge line to an opendrain.

A water heater’s tank can act as a settingbasin for solids suspended in the water.Itis therefore not uncommon for hard waterdeposits to accumulate in the bottom of thetank. It is suggested that a few quarts ofwater be drained from the water heater’stank every month to clean the tank ofthese deposits.

Rapid closing of faucets or solenoidvalves in automatic water using appliancescan cause a banging noise heard in a waterpipe. Strategically located risers in thewater pipe system or water hammerarresting devices can be used to minimizethe problem.

The anode rod should be removed from thewater heater’s tank annually for inspectionand replaced when more than 6″ of corewire is exposed at either end of the rod.

Make sure the cold water supply is turnedoff before removing anode rod.

NOTICE: Do not remove the anode rodfrom the water heater’s tank, except forinspection and/or replacement, as operationwith the anode rod removed will shortenthe life of the glass lined tank and willexclude warranty coverage.

Care and cleaning of the water heater.

Draining the Water HeaterCAUTION: Shut off power to the water

heater before draining water.

DANGER: Before manually operatingthe relief valve, make certain no one will beexposed to the hot water released by thevalve. The water drained from the tank maybe hot enough to present a scald hazard andshould be directed to a suitable drain toprevent injury or damage.

In order to drain the water heater, turn offthe cold water supply. Open a hot waterfaucet or lift the handle on the relief valveto admit air to the tank.

Attach a garden hose to the drain valve onthe water heater and direct the stream ofwater to a drain. Open the valve.

Vacation and Extended Shut-DownIf the water heater is to remain idle for anextended period of time, the power andwater to the appliance should be turned offto conserve energy and prevent a build-upof dangerous hydrogen gas.

The water heater and piping should bedrained if they might be subjected tofreezing temperatures.

After a long shut-down period, the waterheater’s operation and controls should bechecked by qualified service personnel.Make certain the water heater iscompletely filled again before placing it in operation.

NOTICE: Refer to theHydrogen Gas Caution in theOperating Instructions.

DANGER: Beforemanually operating the reliefvalve, make certain no one willbe exposed to the danger ofcoming in contact with the hotwater released by the valve.The water may be hot enoughto create a scald hazard. Thewater should be released into asuitable drain to preventinjury or property damage.

NOTICE: If the temperatureand pressure relief valve on the hot water heaterdischarges periodically, thismay be due to thermalexpansion in a closed watersystem. Contact the watersupplier or your plumbingcontractor on how to correctthis. Do not plug the reliefvalve outlet.

15

Problem Possible Causes What To DoRumbling noise Water conditions in your ● Remove and clean the heating elements.

home caused a build up ofscale or mineral depositson the heating elements.

Relief valve Pressure build up caused ● This is an unacceptable condition and must be producing popping by thermal expansion corrected. Contact the water supplier or plumbing noise or draining in a closed system. contractor on how to correct this. Do not plug the

relief valve outlet.

Rattling noise Internal heat trap ● This is normal for heat trap fittings when in operation during periods fittings in operation. and does not indicate a need for service.of water usage

Not enough or Water usage may have ● Wait for the water heater to recover after an abnormal no hot water exceeded the capacity demand.

of the water heater.

A fuse is blown or a circuit ● Replace fuse or reset circuit breaker.breaker tripped.

Electric supply may be off. ● Make sure electric supply to water heater and disconnect switch, if used, are in the ON position.

The thermostat may ● See the Temperature regulation of the water heater be set set too low. section of this manual.

Leaking or open hot ● Make sure all faucets are closed.water faucets.

Electric service to your ● Contact the local electric utility.home may be interrupted.

Improper wiring. ● See the Installing the water heater section of this manual.

Manual reset limit (ECO) ● See the Temperature regulation of the water heater section of this manual.

Cold water inlet ● This is normal. The colder inlet water takes longer temperature may be to heat.colder during the winter months.

Water is too hot The thermostat ● See the Temperature regulation of the water heater is set too high. section of this manual.

CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or other safetydevices. Refer repairs to qualified service personnel.

Before You Call For Service…Troubleshooting TipsSave time and money! Review the chart on thispage first and you may not need to call for service.

16

Replacement Parts.For 21/2 gallon models with single elements.

Instructions For Placing a Parts OrderAddress parts orders to the distributor orstore where the heater was purchased.

All parts orders should include:

The model and serial number of thewater heater from the rating plate.

Specify voltage and wattage asmarked on the rating plate.

Part description (as noted below) andnumber of parts desired.

CAUTION: For your safety DO NOTattempt repair of electrical wiring,thermostat(s), heating elements or otheroperating controls. Refer repairs to qualifiedservice personnel.

21/2 Gallon Models

RE

SET

RE

S E T

140

130

120110

100

90

THERM-O-DISC

TURN OFF

POWER

BEFORE

SERVICING

Thermostat

Drain valveshroud

Jacketaccesspanel

Thermostatprotective cover

Cavity insulation

Relief valve

Heatingelementgasket

Heatingelement

Thermostatbracket

Electrical cordset (120 VACmodels only)

Drain valve

17

For 6, 10, 20 gallon models with single elements.







6, 10 and 20 Gallon Models

RE

S E T

RE

SET

140

130

120110

100

90

T H E R M - O - D I S C

TURN OFF

POWER

BEFORE

SERVICING

Cavity insulation

Thermostat protective cover

Thermostat

Anode rod

Shroud

Snapbushing

Jacketaccesspanel

Heating element gasketHeating element

Thermostatbracket

Shroud

Nipple, coldinlet

Nipple, hotoutlet

Relief valve

18

Replacement PartsFor 30 gallon models with single and double elements.







TURN OFF

POWER

BEFORE

SERVICING

RE SE T

RE

SET

140

130120 110

10090


TURN OFF

POWER

BEFORE

SERVICING

140

130120 110

10090


RE SE T

RE

SET

140

130120 110

10090


Temperature & pressurerelief valve

(not installed)

J-Tube, Hot outlet

Shroud

Anode

Cold Nipple

Thermostat(single element models only)

Jacketaccesspanels

Cavity insulation

Cavity insulation


cover

Thermostatprotective cover(double element

models only)

Thermostatbracket

Thermostat bracket(double element models only)

Heating element(double element

models only)Heating elementgasket

(double elementmodels only)

Upper Thermostat(double element models only)

Lower Thermostat(double element models only)

Heating elementgasket

Heating element

30 Gallon Models

19

IF YOU NEED SERVICE

1. Should you have any questions about your new water heater, or if it requiresadjustment, repair, or routine maintenance, it is suggested that you first contactyour installer, plumbing contractor or previously agreed upon service agency. Inthe event the firm has moved, or is unavailable, refer to the telephone directory,commercial listings or local utility for qualified service assistance.

2. Should your problem not be solved to your complete satisfaction, you shouldthen contact the Manufacturer’s National Service Department at the followingaddress:

2600 Gunter Park DriveMontgomery, Alabama 36109-1413Phone: 1-800-432-8373.

When contacting the manufacturer, the following information will be requested:

a. Model and serial number of the water heater as shown on the rating plate attachedto the jacket of the heater.

b. Address where the water heater is located and physical location.c. Name and address of installer and any service agency who performed service on

the water heater.d. Date of original installation and dates any service work was performed.e. Details of the problems as you can best describe them.f. List of people, with dates, who have been contacted regarding your problem.

20

Wiring diagrams.

Therm-O-DiscThermostats (Type 59T)

Grounding conductor may be required.Refer to Wiring Section of Manual

*

DOUBLE ELEMENTSIMULTANEOUS OPERATION

DOUBLE ELEMENTNON-SIMULTANEOUS

FIG. A

FIG. C FIG. D FIG. E

BLAC

K

LOWERHEATINGELEMENT

2

UPPER THERMOSTAT& HIGH TEMP.LIMIT (ECO)

UPPERHEATINGELEMENT

BLU

E

YELL

OW

BLAC

K

L1 G*

JUN

CTI

ON

BOX

4

L2

RED

1 3

1

2

BLAC

K

RED

LOWERTHERMOSTAT

1

2

4

BRANCH CIRCUIT TO ELECTRICALDISTRIBUTION PANEL

1

2

1

2

THERMOSTAT& HIGH TEMP.LIMIT (ECO)

HEATINGELEMENT

WH

ITE

BLAC

KBL

ACK

H G*TO PROPERLY GROUNDEDRECEPTACLE ON BRANCH CIRCUIT TO ELECTRICAL DISTRIBUTION PANEL

JUN

CTI

ON

BOX

N

120 V Plug ConnectedCord Set ONLY

SINGLE ELEMENT

FIG. B


UPP

ER T

HER

MO

STAT

& H

IGH

TEM

P. L

IMIT

(EC

O)

2

UPPERHEATINGELEMENT

BLU

E

L1

JUN

CTI

ON

BO

X

4

L2

1 3

BLAC

K

LOWERHEATINGELEMENT

LOWERTHERMOSTAT& HIGH TEMPLIMIT (ECO)

1

2

4

1 3

1

2 RED

2

RED

(10

GA)

BLAC

K(1

0 G

A)

YELLOW

RED

(10

GA)

BLAC

K (1

0 G

A)

SINGLE ELEMENT

2

1

2


HEATINGELEMENT

RED

BLAC

KBL

ACK

L1 G*


JUN

CTI

ON

BOX

4

L2

RED

1 3

120 V ONLY


SINGLE ELEMENT

2

1

2


HEATINGELEMENT

WH

ITE

BLAC

KBL

ACK

H

JUN

CTI

ON

BOX

N

1

G*

THIS ELECTRIC WATER HEATER IS WIRED AS INDICATED ABOVE

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