installation, start-up, and service...
TRANSCRIPT
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500069-01 Printed in U.S.A. Form 50HQP-1SI Pg 1 5-10 Replaces: New
Installation, Start-Up, andService Instructions
CONTENTSPage
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . .1,2GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . 2Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 2• STORAGE• PROTECTION• INSPECT UNITStep 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Step 4 — Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Step 5 — Install Duct System. . . . . . . . . . . . . . . . . . . . . 5• SOUND ATTENUATION• EXISTING DUCT SYSTEMStep 6 — Install Condensate Piping Drain . . . . . . . . 6• INSTALLATION• VENTINGStep 7 — Field Convert Air Discharge . . . . . . . . . . . . 6Step 8 — Install Piping Connections . . . . . . . . . . . . . 7• WATER LOOP APPLICATIONS• GROUND-LOOP APPLICATIONS• GROUND-WATER APPLICATIONSStep 9 — Install Field Power Supply Wiring . . . . . . 8• POWER CONNECTION• SUPPLY VOLTAGE• EXTERNAL LOOP POWER CONNECTION• 208-VOLT OPERATIONStep 10 — Install Field Control Wiring . . . . . . . . . . . 20• THERMOSTAT CONNECTIONS• WATER FREEZE PROTECTION• AIR COIL FREEZE PROTECTION• ACCESSORY CONNECTIONS• WATER SOLENOID VALVESPRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-25System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Airflow and External Static Pressure . . . . . . . . . . . 21FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . .25,26Complete C Control Jumper Settings. . . . . . . . . . . 25Complete C Control DIP Switches . . . . . . . . . . . . . . 25Deluxe D Control Jumper Settings . . . . . . . . . . . . . 25Deluxe D Control DIP Switches . . . . . . . . . . . . . . . . 25Deluxe D Control Accessory Relay
Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-30Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Start Up System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 27Unit Start-Up in Cooling Mode. . . . . . . . . . . . . . . . . . . 27Unit Start-Up in Heating Mode. . . . . . . . . . . . . . . . . . . 27Unit Start-Up with WSHP Open Controls . . . . . . . . 28Flow Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PageAntifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 30Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 30OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-34Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Units with Aquazone Complete C Control . . . . . . . 30Units with Aquazone Deluxe D Control . . . . . . . . . . 30Units with WSHP Open Multiple Protocol. . . . . . . . 31SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34,35Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Aquazone Deluxe D Control LED Indicators . . . . . 34WSHP Open Test Mode. . . . . . . . . . . . . . . . . . . . . . . . . . 34SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-38Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 36Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 36Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Air Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 37Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 37Blower Fan Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Blower Fan Performance Adjustment . . . . . . . . . . . 38Replacing the WSHP Open Controller’s
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 39-41Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39APPENDIX A — WSHP OPEN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . 42-47START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . CL-1,CL-2
SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-nents. Only trained and qualified service personnel shouldinstall, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-tions of cleaning coils and filters and replacing filters. All otheroperations should be performed by trained service personnel.When working on air-conditioning equipment, observe precau-tions in the literature, tags and labels attached to the unit, andother safety precautions that may apply.
IMPORTANT: Read the entire instruction manual beforestarting installation.
AQUAZONE™50HQP072-120
Horizontal Water Source Heat Pumpswith PURON® Refrigerant (R-410A)
2
Improper installation, adjustment, alteration, service, main-tenance, or use can cause explosion, fire, electrical shock orother conditions which may cause personal injury or propertydamage. Consult a qualified installer, service agency, or yourdistributor or branch for information or assistance. Thequalified installer or agency must use factory-authorized kits oraccessories when modifying this product. Refer to theindividual instructions packaged with the kits or accessorieswhen installing.
Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloth for brazing operations. Have fireextinguisher available. Read these instructions thoroughly andfollow all warnings or cautions attached to the unit. Consultlocal building codes and the National Electrical Code (NEC)for special installation requirements.
Understand the signal words — DANGER, WARNING,and CAUTION. DANGER identifies the most serious hazardswhich will result in severe personal injury or death. WARN-ING signifies hazards that could result in personal injury ordeath. CAUTION is used to identify unsafe practices, whichwould result in minor personal injury or product and propertydamage.
Recognize safety information. This is the safety-alertsymbol ( ). When you see this symbol on the unit and ininstructions or manuals, be alert to the potential for personalinjury.
GENERAL
This Installation and Start-Up Instructions literature is forAquazone™ water source heat pump systems with Puron re-frigerant.
Water source heat pumps (WSHPs) are single-package hori-zontally and vertically mounted units with electronic controlsdesigned for year-round cooling and heating.
INSTALLATION
Step 1 — Check Jobsite — Installation, operation andmaintenance instructions are provided with each unit. Beforeunit start-up, read all manuals and become familiar with the
unit and its operation. Thoroughly check out the system beforeoperation. Complete the inspections and instructions listedbelow to prepare a unit for installation. See Table 1 for unitphysical data.
Horizontal units are designed for indoor installation only.Be sure to allow adequate space around the unit for servicing.See Fig. 1 for overall unit dimensions. Refer to Fig. 2 for an ex-ample of a typical horizontal installation.
Step 2 — Check Unit — Upon receipt of shipment atthe jobsite, carefully check the shipment against the bill oflading. Make sure all units have been received. Inspect the car-ton or crating of each unit, and inspect each unit for damage.Ensure the shipping company makes proper notation of anyshortages or damage on all copies of the freight bill. Concealeddamage not discovered during unloading must be reported tothe shipping company within 15 days of receipt of shipment.NOTE: It is the responsibility of the purchaser to file allnecessary claims with the shipping company.
1. Verify unit is correct model for entering water tempera-ture of job.
2. Be sure that the location chosen for unit installation pro-vides ambient temperatures maintained above freezing.Well water applications are especially susceptible tofreezing.
3. Be sure the installation location is isolated from sleepingareas, private offices and other acoustically sensitivespaces.NOTE: A sound control accessory package may be usedto help eliminate sound in sensitive spaces.
4. Check local codes to be sure a secondary drain pan is notrequired under the unit.
5. Be sure unit is mounted at a height sufficient to providean adequate slope of the condensate lines. If an appropri-ate slope cannot be achieved, a field-supplied condensatepump may be required.
6. Provide sufficient space for duct connection.7. Provide adequate clearance for filter replacement and
drain pan cleaning. Do not allow piping, conduit, etc. toblock filter access.
8. Provide sufficient access to allow maintenance andservicing of the fan and fan motor, compressor and coils.Removal of the entire unit from the closet should not benecessary.
9. Provide an unobstructed path to the unit within the closetor mechanical room. Space should be sufficient to allowremoval of unit if necessary.
10. Provide ready access to water valves and fittings, andscrewdriver access to unit side panels, discharge collar,and all electrical connections.
11. Where access to side panels is limited, pre-removal of thecontrol box side mounting screws may be necessary forfuture servicing.
STORAGE — If the equipment is not needed for immediateinstallation upon its arrival at the jobsite, it should be left in itsshipping carton and stored in a clean, dry area of the buildingor in a warehouse. Units must be stored in an upright positionat all times. If carton stacking is necessary, stack units a
WARNING
Electrical shock can cause personal injury and death. Shutoff all power to this equipment during installation. Theremay be more than one disconnect switch. Tag all discon-nect locations to alert others not to restore power until workis completed.
CAUTION
This system uses R-410A, which has higher pressures thanR-22 and other refrigerants. No other refrigerant may beused in this system. Suction tubing design pressure is445 psig (3068 kPa) and liquid tubing design pressureis 656 psig (4522 kPa). Failure to use gage set, hoses,and recovery systems designed to handle R-410Arefrigerant may result in personal injury and equipmentdamage. If unsure about equipment, consult the equipmentmanufacturer.
IMPORTANT: The installation of water source heat pumpunits and all associated components, parts, and accessorieswhich make up the installation shall be in accordance withthe regulations of ALL authorities having jurisdiction andMUST conform to all applicable codes. It is the responsi-bility of the installing contractor to determine and complywith ALL applicable codes and regulations.
CAUTION
To avoid equipment damage, do not use these units as asource of heating or cooling during the construction pro-cess. The mechanical components and filters used in theseunits quickly becomes clogged with construction dirt anddebris which may cause system damage.
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maximum of 3 high. Do not remove any equipment from itsshipping package until it is needed for installation.PROTECTION — Once the units are properly positioned onthe jobsite, they must be covered with either a shipping carton,vinyl film, or an equivalent protective covering. Open ends ofpipes stored on the jobsite must be capped. This precaution isespecially important in areas where painting, plastering, orspraying of fireproof material, etc. is not yet complete. Foreignmaterial that is allowed to accumulate within the units can pre-vent proper start-up and necessitate costly clean-up operations.
Before installing any of the system components, be sure toexamine each pipe, fitting, and valve, and remove any dirt orforeign material found in or on these components.
INSPECT UNIT — To prepare the unit for installation, com-plete the procedures listed below:
1. Compare the electrical data on the unit nameplate withordering and shipping information to verify that thecorrect unit has been shipped.
2. Do not remove the packaging until the unit is ready forinstallation.
3. Verify that the unit’s refrigerant tubing is free of kinks ordents, and that it does not touch other unit components.
4. Inspect all electrical connections. Be sure connections areclean and tight at their terminations.
5. Loosen compressor bolts until the compressor rides freelyon springs. Remove shipping restraints.
6. Remove the four 1/4 in. shipping bolts from compressorsupport plate (two bolts on each side) to maximize vibra-tion and sound alternation.
7. Remove any blower support cardboard from inlet of theblower.
8. Locate and verify any accessory kit located in compressorand/or blower section.
9. Remove any access panel screws that may be difficult toremove once unit is installed.
Table 1 — Physical Data — 50HQP072-120 Units
LEGEND *All units have grommet and spring compressor mountings, and1/2-in. and 13/4-in. electrical knockouts.
†Two-inch filters are available as field-installed accessory.
CAUTION
DO NOT store or install units in corrosive environments orin locations subject to temperature or humidity extremes(e.g., attics, garages, rooftops, etc.). Corrosive conditionsand high temperature or humidity can significantly reduceperformance, reliability, and service life. Always moveunits in an upright position. Tilting units on their sides maycause equipment damage.
CAUTION
Failure to remove shipping brackets from spring-mountedcompressors will cause excessive noise and could causecomponent failure due to added vibration.
UNIT 50HQP 072 096 120NOMINAL CAPACITY (tons) 6 8 10Compressor(s)* Scroll
NOMINAL AIRFLOW (cfm) 2400 3200 4000Range (cfm) 1800-3000 2400-4000 3000-4500
WEIGHT (lb)Operating Weight 586 644 698Shipping Weight 626 684 738
Corner Weight — Control Box/Compressor Side 235 254 271 Corner Weight — Compressor Side 101 120 137 Corner Weight — Blower Side 180 190 200 Corner Weight — Air Coil Side 70 80 90AIR COIL Aluminum Fins, Copper TubesTotal Face Area (sq ft) 7.5 8.9 8.9
Dimensions H x W (in.) 20 x 54 20 x 64 20 x 64Tube Size (in.) 3/8 3/8 3/8Fin Spacing (FPI) 14 14 14Number of Rows 3 3 3
REFRIGERANT CHARGE (R-410A) (oz/ckt) 60 76 80MAXIMUM WORKING PRESSURE (psig) 500 500 500NO. OF CIRCUITS 2 2 2HIGH-VOLTAGE BUSHING (in.) 13/4BLOWERQty...Wheel Size (D x W) (in.) 1...12 x 12 1...12 x 12 1...12 x 12Range (rpm) 760-1014Standard (hp...kW) 1...0.75 2...1.49 3...2.24Large (hp...kW) 2...1.49 3...2.24 5...3.73
REFRIGERANT-TO-WATER HEAT EXCHANGER Steel-Copper or Steel-Cupronickel Tube-in-TubeConnection (FPT) (in. ...TPI) 11/4...111/2 11/2...111/2
Volume (gal.) 1.62 1.81 2.40 Maximum Water Working Pressure (psig) 500 500 500CONDENSATE DRAIN CONNECTION — FTP (in. ...TPI) 3/4...14FILTER Standard 1-in. Throwaway†Qty...Size (Height x Width) (in.) 4...16 x 20
FPI — Fins per InchTPI — Threads per inch
4
(RIGHT) (LEFT)
(BACK)(BACK)
CONDENSATEDRAIN CONDENSATE DRAIN
C
NOTES:1. All dimensions in inches, unless indicated.2. Access is required for all removable panels and installer should
take care to comply with all building codes and allow adequateclearance.
3. Water inlet and outlet connections are available on either side ofthe unit. Plugs are shipped loose in a plastic bag tied to the waterleg in front of the unit. Installer must plug unused connection.
4. Condensate drain connection is on end opposite of compressor.5. Electrical access is available on either side of the front of the unit.6. Electrical box is on right side but can be field-converted to left.
LEGENDBSP — Blower Service PanelCAP — Control Access PanelCBP — Control Box PanelEAP — Expansion Valve Access Panel
*Water Outlet.†Water Inlet.
UNIT 50HQP
OVERALL CABINET
(in.)
DISCHARGE CONNECTIONS (in.)
(Duct Flange [± 0.10 in.])
WATER CONNECTIONS
(in.)
ELECTRICAL KNOCKOUTS
(in.)
RETURN AIR CONNECTIONS (in.)
(Using Return Air Opening)
ADepth
BWidth
CHeight D
ESupplyWidth
FSupplyHeight
G K L* M† O P Q RS
ReturnDepth
TReturnHeight
U V
072-120 36.3 84.9 21.6 14.0 17.0 13.5 7.8 15.0 8.3 4.0 2.0 18.8 16.8 13.8 65.0 18.0 1.0 18.9
CONNECTIONS
Water Outlet 11/4FPT (072,096)11/2FPT (120)
Water Inlet 11/4FPT (072,096)11/2FPT (120)
CondensateDrain
3/4FPT
High VoltageAccess 11/8K.O.
Low VoltageAccess
7/8K.O.
1
2
3
4
5
a50-8531
Fig. 1 — Unit Dimensions
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Step 3 — Locate Unit — The following guidelinesshould be considered when choosing a location for a WSHP:• Units are for indoor use only.• Locate in areas where ambient temperatures are between
40 F and 100 F and relative humidity is no greater than75%.
• Provide sufficient space for water, electrical and ductconnections.
• Locate unit in an area that allows for easy access andremoval of filter and access panels.
• Allow enough space for service personnel to performmaintenance.
• Provisions must be made for return air to freely enter thespace if unit needs to be installed in a confined area suchas a closet.
NOTE: Correct placement of the horizontal unit can play animportant part in minimizing sound problems. Since duct-work is normally applied to these units, the unit can be placedso that the principal sound emission is outside the occupiedspace in sound-critical applications. A fire damper may be re-quired by the local code if a fire wall is penetrated.
Step 4 — Mount Unit — Units should be mounted us-ing the factory-installed hangers. See Fig. 3. Proper attachment
of hanging rods to building structure is critical for safety. SeeFig. 2. Rod attachments must be able to support the weight ofthe unit. See Table 1 for unit operating weights.
Step 5 — Install Duct System — The duct systemshould be sized to handle the design airflow quietly.
NOTE: Depending on the unit, the fan wheel may have a ship-ping support installed at the factory. This must be removedbefore operating unit.SOUND ATTENUATION — To eliminate the transfer ofvibration to the duct system, a flexible connector is recom-mended for both discharge and return air duct connections onmetal duct systems. The supply and return plenums should in-clude internal duct liner of fiberglass or be made of duct boardconstruction to maximize sound attenuation of the blower.Installing the WSHP unit to uninsulated ductwork in an uncon-ditioned space is not recommended since it will sweat andadversely affect the unit’s performance.
To reduce air noise, at least one 90-degree elbow could beincluded in the supply and return air ducts, provided systemperformance is not adversely impacted. The blower speed canbe also changed in the field to reduce air noise or excessive air-flow, provided system performance is not adversely impacted.
Fig. 2 — Typical Horizontal Installation
LEGENDBSP — Blower Service PanelCAP — Control Access PanelCBP — Control Box PanelEAP — Expansion Valve Access Panel
NOTES:1. Access is required for all removable panels and installer should
take care to comply with all building codes and allow adequateclearance.
2. Water inlet and outlet connections are available on either side ofthe unit. Plugs are shipped loose in a plastic bag tied to the waterleg in front of the unit. Installer must plug unused connection.
3. Condensate drain connection is on end opposite of compressor.4. Electrical access is available on either side of the front of the unit.5. Electrical box is on right side but can be field-converted to left.a50-8534
6
EXISTING DUCT SYSTEM — If the unit is connected toexisting ductwork, consider the following:• Verify that the existing ducts have the proper capacity to
handle the unit airflow. If the ductwork is too small,larger ductwork should be installed.
• Check existing ductwork for leaks and repair asnecessary.
NOTE: Local codes may require ventilation air to enter thespace for proper indoor air quality. Hard-duct ventilation maybe required for the ventilating air supply. If hard ducted venti-lation is not required, be sure that a proper air path is providedfor ventilation air to unit to meet ventilation requirement of thespace.
Step 6 — Install Condensate Piping DrainINSTALLATION — Slope the unit toward the drain at a1/4 in. per foot pitch. See Fig. 4. If it is not possible to meet therequired pitch, a condensate pump should be installed at theunit to pump condensate to building drain.
Install condensate trap at each unit with the top of the trappositioned below the unit condensate drain connection asshown in Fig. 5. Design the depth of the trap (water-seal) basedupon the amount of ESP capability of the blower (where 2 in.wg of ESP capability requires 2 in. of trap depth). As a generalrule, 11/2 in. trap depth is the minimum. Each unit must be in-stalled with its own individual trap and connection to the con-densate line (main) or riser.
Units are not internally trapped, therefore an external trap isnecessary. Each unit must be installed with its own individualtrap and means to flush or blowout the condensate drain line.Do not install units with a common trap or vent. For typicalcondensate connections see Fig. 5.NOTE: Never use a pipe size smaller than the connection.VENTING — A vent should be installed in the condensateline of any application which may allow dirt or air to collect inthe line. Consider the following:• Always install a vent where an application requires a
long horizontal run.• Always install a vent where large units are working
against higher external static pressure and to allowproper drainage for multiple units connected to the samecondensate main.
• Be sure to support the line where anticipated saggingfrom the condensate or when “double trapping” mayoccur.
• If condensate pump is present on unit, be sure drain con-nections have a check valve to prevent back flow of con-densate into other units.
Step 7 — Field Convert Air Discharge — Hori-zontal units can be field converted between straight (side) andback (end) discharge.NOTE: It is not possible to field convert return air between leftor right return models due to the necessity of refrigeration cop-per piping changes.
Field conversion must be completed on the ground. If theunit is already hung it should be taken down for the field con-version. Place in a well-lighted area. Conversion should onlybe attempted by a qualified service technician.SIDE TO BACK DISCHARGE CONVERSION
1. Remove back panel and side access panel. See Fig. 6.2. Loosen 2 motor slide nuts, raise motor slide assembly and
remove belt and motor sheave. See Fig. 7.3. Remove blower sheave. Remove motor bolts and careful-
ly remove motor. See Fig. 8.4. Remove 2 motor clips and reattach to opposite side. See
Fig. 9.5. Unbolt (3 per side) complete housing assembly. See
Fig. 9.6. Rotate complete assembly into new position. Locate over
mounting holes in base, reattach using 3 bolts per side.
3/8" [10MM] THREADEDROD (FIELD SUPPLIED)
VIBRATION ISOLATOR(FACTORY SUPPLIED)
WASHER(FIELD SUPPLIED)
DOUBLE HEX NUTS(FIELD SUPPLIED)
a50-6260e8535Fig. 3 — Hanger Brackets
1/4” Pitch forDrainage
Drain Connection
Pitch TowardDrain
a50-6260ef8536Fig. 4 — Horizontal Unit Pitch
*3/4" IPT
Trap Depth1.5" [38mm]
Min 1.5"[38mm]
1/4" per foot(21mm per m)drain slope
3/4" PVC orCopper by others
Vent
Fig. 5 — Trap Condensate Drain
a50-6260e8537
7
7. Mount motor, motor sheave, blower sheave and belt.Make sure wires are not pinched and not over sharp edg-es. Adjust motor downward to tighten belt. Raise or lowermotor slide assembly with adjusting bolt and retighten the2 slide nuts. Check for correct tension. Rewire motor (atcontactor) for correct rotation. Spin blower wheel to en-sure wheel is not obstructed.
8. Replace panels from Step 1.BACK TO SIDE DISCHARGE CONVERSION — If thedischarge is changed from back to side, use the above instruc-tions. Note that figures will be reversed.LEFT OR RIGHT RETURN UNITS — It is not possible tofield convert return air between left or right return units due tothe necessity of refrigeration copper piping changes. However,the conversion process of side to back or back to side dischargefor either right or left return configuration is the same. In somecases, it may be possible to rotate the entire unit 180 degrees ifthe return air connection needs to be on the opposite side. Notethat rotating the unit will move the piping to the other end ofthe unit.
Step 8 — Install Piping Connections — Depend-ing on the application, there are 3 types of WSHP piping sys-tems to choose from: water loop, ground-water and ground loop.Refer to the Carrier System Design Manual for additional infor-mation.
All WSHP units utilize low temperature soldered femalepipe thread fittings for water connections to prevent annealingand out-of-round leak problems which are typically associatedwith high temperature brazed connections. Refer to Table 1 forconnection sizes. When making piping connections, considerthe following:• A backup wrench must be used when making screw con-
nections to unit to prevent internal damage to piping.
• Insulation may be required on piping to avoid condensa-tion in the case where fluid in loop piping operates attemperatures below dew point of adjacent air.
• Piping systems that contain steel pipes or fittings maybe subject to galvanic corrosion. Dielectric fittings maybe used to isolate the steel parts of the system to avoidgalvanic corrosion.
• Do not allow hoses to rest against structural buildingcomponents. Compressor vibration may be transmittedthrough the hoses to the structure, causing unnecessarynoise complaints.Figure 10 shows a typical supply/return hose kit assembly.
WATER LOOP APPLICATIONS — Water loop applicationsusually include a number of units plumbed to a common pip-ing system. Maintenance to any of these units can introduce airinto the piping system. Therefore, air elimination equipmentcomprises a major portion of the mechanical room plumbing.
The flow rate is usually set between 2.25 and 3 gpm per tonof cooling capacity. For proper maintenance and servicing,pressure-temperature (P/T) ports are necessary for temperatureand flow verification.
In addition to complying with any applicable codes, consid-er the following for system piping:• Piping systems utilizing water temperatures below
50 F require 1/2-in. closed cell insulation on all pipingsurfaces to eliminate condensation.
REMOVE BLOWER PANEL AND ACCESS PANEL
RETURN AIRFRONT
Fig. 6 — Removing Panels
a50-8538
MOTOR SLIDE NUTS
Fig. 7 — Removing Belt
a50-8539
REMOVE MOTOR AND BLOWER SHEAVE
ADJUSTING BOLT
REMOVE 4 MOTOR BOLTS
Fig. 8 — Removing Motor
a50-8540
MOTOR CLIPS
BOLTS
Fig. 9 — Removing Blower Assembly
a50-8541
8
• All plastic to metal threaded fittings should be avoideddue to the potential to leak. Use a flange fitted substitute.
• Teflon tape thread sealant is recommended to minimizeinternal fouling of the heat exchanger.
• Use backup wrench. Do not overtighten connections.• Route piping to avoid service access areas to unit. • The piping system should be flushed prior to operation to
remove dirt and foreign materials from the system.
GROUND-LOOP APPLICATIONS — Temperatures be-tween 25 and 110 F and a cooling capacity of 2.25 to3 gpm of flow per ton are recommended. In addition tocomplying with any applicable codes, consider the follow-ing for system piping:• Piping materials should be limited to only polyethylene
fusion in the buried sections of the loop.• Galvanized or steel fittings should not be used at any
time due to corrosion.• All plastic to metal threaded fittings should be avoided
due to the potential to leak. Use a flange fitted substitute.• Do not overtighten connections.• Route piping to avoid service access areas to unit.• Pressure-temperature (P/T) plugs should be used to mea-
sure flow of pressure drop.GROUND-WATER APPLICATIONS — Typical ground-water piping is shown in Fig. 11. In addition to complyingwith any applicable codes, consider the following for sys-tem piping:• Install shut-off valves for servicing.• Install pressure-temperature plugs to measure flow and
temperature.• Boiler drains and other valves should be connected using
a “T” connector to allow acid flushing for the heatexchanger.
• Do not overtighten connections.• Route piping to avoid service access areas to unit.• Use PVC SCH80 or copper piping material.NOTE: PVC SCH40 should not be used due to system highpressure and temperature extremes.Water Supply and Quantity — Check water supply. Watersupply should be plentiful and of good quality. See Table 2 forwater quality guidelines.
In all applications, the quality of the water circulatedthrough the heat exchanger must fall within the ranges listed inthe Water Quality Guidelines table. Consult a local water treat-ment firm, independent testing facility, or local water authorityfor specific recommendations to maintain water quality withinthe published limits.
Step 9 — Install Field Power Supply Wiring
All field-installed wiring, including the electrical ground,MUST comply with the National Electrical Code (NEC) aswell as applicable local codes. In addition, all field wiring mustconform to the Class II temperature limitations described in theNEC.
Refer to unit wiring diagrams Fig. 12-21 for fuse sizes and aschematic of the field connections which must be made by theinstalling (or electrical) contractor.
Consult the unit wiring diagram located on the inside of thecompressor access panel to ensure proper electrical hookup.The installing (or electrical) contractor must make the fieldconnections when using field-supplied disconnect.
Operating voltage must be the same voltage and phase asshown in Electrical Data shown in Table 3.
Make all final electrical connections with a length of flexi-ble conduit to minimize vibration and sound transmission tothe building.
POWER CONNECTION — Line voltage connection ismade by connecting the incoming line voltage wires to theL side of the power block terminal. See Fig. 22. See Table 3for correct wire and maximum overcurrent protection siz-ing. See Table 4 for low voltage VA ratings.SUPPLY VOLTAGE — Operating voltage to unit must bewithin voltage range indicated on unit nameplate.
On 3-phase units, voltages under load between phases mustbe balanced within 2%. Use the following formula to deter-mine the percentage voltage imbalance:% Voltage Imbalance
Example: Supply voltage is 460-3-60.AB = 452 voltsBC = 464 voltsAC = 455 volts
Determine maximum deviation from average voltage:(AB) 457 – 452 = 5 v(BC) 464 – 457 = 7 v(AC) 457 – 455 = 2 vMaximum deviation is 7 v.
IMPORTANT: Failure to comply with the above requiredwater quality and quantity limitations and the closed-system application design requirements may cause damageto the tube-in-tube heat exchanger that is not the responsi-bility of the manufacturer.
RIB CRIMPED
LENGTH(2 FT [0.6M] LENGTH STANDARD)
SWIVELBRASSFITTING
BRASSFITTING
EPT
Fig. 10 — Supply/Return Hose Kit
WARNING
Electrical shock can cause personal injury and death. Shutoff all power to this equipment during installation. Theremay be more than one disconnect switch. Tag all discon-nect locations to alert others not to restore power until workis completed.
CAUTION
Use only copper conductors for field-installed electricalwiring. Unit terminals are not designed to accept othertypes of conductors.
= 100 xmax voltage deviation from average voltage
average voltage
Average Voltage =452 + 464 + 455
3
=1371
3
= 457
9
Determine percent voltage imbalance.
= 1.53%This amount of phase imbalance is satisfactory as it is
below the maximum allowable 2%.Operation on improper line voltage or excessive phase
imbalance constitutes abuse and may cause damage to electri-cal components.
NOTE: If more than 2% voltage imbalance is present, contactlocal electric utility.
EXTERNAL LOOP POWER CONNECTION — If the unitis to be connected to an external loop pump or flow controller,connect the pump to the loop pump terminal block PB1. Themaximum power handling is 4 amps at 240 volts. The pumpswill automatically cycle as required by the unit.
208-VOLT OPERATION — All 208-240 volt units are factorywired for 208 volts. The transformers may be switched to240-volt operation (as illustrated on the wiring diagram) byswitching the red (208 volt) wire with the orange (240 volt)wire at the L2 terminal.
% Voltage Imbalance = 100 x7
457
Pressure-TemperaturePlugs
BoilerDrains
Strainer – Field-Installed Accessory(16 to 20 mesh recommended forfilter sediment)
Shut-OffValve
WaterControlValve
AutomaticBalance Valve
ExpansionTank
Water Out
Water InFrom Pump
Fig. 11 — Typical Ground-Water Piping Installation
a50-8542
10
Table 2 — Water Quality Guidelines
LEGEND
*Heat exchanger materials considered are copper, cupronickel, 304 SS (stainlesssteel), 316 SS, titanium.†Closed recirculating system is identified by a closed pressurized piping system.**Recirculating open wells should observe the open recirculating designconsiderations.
††If the concentration of these corrosives exceeds the maximum allowable level,then the potential for serious corrosion problems exists.Sulfides in the water quickly oxidize when exposed to air, requiring that no agitationoccur as the sample is taken. Unless tested immediately at the site, the sample willrequire stabilization with a few drops of one Molar zinc acetate solution, allowingaccurate sulfide determination up to 24 hours after sampling. A low pH and highalkalinity cause system problems, even when both values are within ranges shown.The term pH refers to the acidity, basicity, or neutrality of the water supply. Below7.0, the water is considered to be acidic. Above 7.0, water is considered to be basic.Neutral water contains a pH of 7.0. NOTE: To convert ppm to grains per gallon, divide by 17. Hardness in mg/l is equiv-alent to ppm.
CONDITION HXMATERIAL* CLOSED RECIRCULATING† OPEN LOOP AND RECIRCULATING WELL**
Scaling Potential — Primary MeasurementAbove the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below.
pH/CalciumHardness Method All N/A pH < 7.5 and Ca Hardness, <100 ppm
Index Limits for Probable Scaling Situations (Operation outside these limits is not recommended.)Scaling indexes should be calculated at 150 F for direct use and HWG applications, and at 90 F for indirect HX use. A monitoring plan should beimplemented.
Ryznar Stability IndexAll N/A
6.0 - 7.5If >7.5 minimize steel pipe use.
Langelier Saturation IndexAll N/A
–0.5 to +0.5If <–0.5 minimize steel pipe use.
Based upon 150 F HWG and direct well, 85 F indirect well HX.
Iron FoulingIron Fe2+ (Ferrous)(Bacterial Iron Potential) All N/A
<0.2 ppm (Ferrous)If Fe2+ (ferrous) >0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
Iron FoulingAll N/A
<0.5 ppm of OxygenAbove this level deposition will occur.
Corrosion Prevention††pH
All 6 - 8.5Monitor/treat as needed.
6 - 8.5Minimize steel pipe below 7 and no open tanks with pH <8.
Hydrogen Sulfide (H2S)
All N/A
<0.5 ppmAt H2S>0.2 ppm, avoid use of copper and cupronickel piping or HXs.
Rotten egg smell appears at 0.5 ppm level.Copper alloy (bronze or brass) cast components are okay to <0.5 ppm.
Ammonia Ion as Hydroxide,Chloride, Nitrate and SulfateCompounds
All N/A<0.5 ppm
Maximum Chloride Levels Maximum allowable at maximum water temperature.
50 F (10 C) 75 F (24 C) 100 F (38 C)Copper N/A <20 ppm NR NR
CuproNickel N/A <150 ppm NR NR304 SS N/A <400 ppm <250 ppm <150 ppm316 SS N/A <1000 ppm <550 ppm <375 ppmTitanium N/A >1000 ppm >550 ppm >375 ppm
Erosion and CloggingParticulate Size and Erosion
All
<10 ppm of particles and a max-imum velocity of 6 fps. Filtered
for maximum800 micron size.
<10 ppm (<1 ppm “sand free” for reinjection) of particles and a maximum velocity of 6 fps. Filtered for maximum 800 micron size. Any particulate that is not removed can potentially clog components.
Brackish All N/A Use cupronickel heat exchanger when concentrations of calcium or sodium chloride are greater than 125 ppm are present. (Seawater is approximately 25,000 ppm.)
HWG — Hot Water GeneratorHX — Heat ExchangerN/A — Design Limits Not Applicable Considering Recirculating
Potable WaterNR — Application Not RecommendedSS — Stainless Steel
11
Complete C
Complete C 2Complete C 1
Complete C
Complete C 2Complete C 1
BC — Blower ContactorCB — Circuit BreakerCC — Compressor ContactorCO — Sensor, Condensate OverflowFP1 — Sensor, Water Coil Freeze ProtectionFP2 — Sensor, Air Coil Freeze ProtectionHP — High-Pressure SwitchJW3 — Clippable Field Selection JumperLOC — Loss of Charge Pressure SwitchPDB — Power Distribution BlockRVS — Reversing Valve SolenoidTRANS — TransformerTXV — Thermostatic Expansion Valve
Factory Line Voltage WiringFactory Low Voltage Wiring
NOTES:1. Compressor and blower motor thermally protected internally.2. All wiring to the unit must comply with NEC (National Electrical
Code) and local codes.3. 208/230-v transformers will be connected for 208-v operation. For
230-v operation, disconnect RED lead at L1, and attach ORGlead to L1. Close open end of RED lead.
4. FPI thermistor provides freeze protection for WATER. When usingANTIFREEZE solutions, cut JW3 jumper.
5. Typical heat pump thermostat wiring shown. Refer to thermostatinstallation instructions for wiring to the unit. Thermostat wiring
must be “Class 1” and voltage rating equal to or greater than unitsupply voltage.
6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumperand dry contact will be available between AL1 and AL2.
7. Transformer secondary ground via Complete C board standoffsand screws to control box. (Ground available from top two stand-offs as shown.)
8. Suffix 1 designates association with lead compressor. Suffix 2with lag compressor.
9. For dual point power (DPP) option, blower wire will connect toother PBD.
LEGEND
Field Line Voltage WiringField Low Voltage WiringPrinted Circuit TraceOptional Wiring
Relay/Contactor Coil
Thermistor
Condensate Pan
Circuit Breaker
Ground
Solenoid Coil
Relay Contacts - N.O.
Relay Contacts - N.C.
Temperature Switch
Switch - Low Pressure
Switch - High Pressure
Wire Nut
Fig. 12 — 50HQP072-120 Units — Typical Control Wiring with Complete C Control
12
Fig
. 13
— 5
0HQ
P07
2-12
0 U
nit
s —
Typ
ical
Co
ntr
ol W
irin
g w
ith
Del
uxe
D C
on
tro
l
See
lege
nd a
nd n
otes
on
page
11.
Del
uxe
DD
elu
xe D
Del
uxe
DD
elu
xe D
Del
uxe
D 2
Del
uxe
D 2
Del
uxe
D 1
Del
uxe
D 1
Del
uxe
D 1
Del
uxe
D 1
Del
uxe
D 2
Del
uxe
D 2
13
Fig
. 14
— 5
0HQ
P07
2-12
0 U
nit
s w
ith
Co
mp
lete
C a
nd
LO
N C
on
tro
ller
(460
V)
Co
mp
lete
C
NO
TE
S:
1.C
ompr
esso
r an
d bl
ower
mot
or th
erm
ally
pro
tect
ed in
tern
ally
.2.
All
wiri
ng to
the
unit
mus
t com
ply
with
NE
C a
nd lo
cal c
odes
.3.
Tran
sfor
mer
is
wire
d to
460
v B
LK/R
ED
lea
d fo
r 46
0-3-
60 u
nits
. Tr
ansf
orm
er i
s en
ergy
lim
iting
or
may
have
circ
uit b
reak
er.
4.F
P1
ther
mis
tor
prov
ides
low
tem
pera
ture
pro
tect
ion
for
wat
er. W
hen
usin
g an
tifre
eze
solu
tions
, cut
JW
3ju
mpe
r.5.
Ref
er t
o m
icro
proc
esso
r co
ntro
l, LO
N,
or t
herm
osta
t in
stal
latio
n in
stru
ctio
ns f
or w
iring
to
the
unit.
Wire
“N01
” fr
om L
ON
to
“Y1”
Com
plet
e C
whe
n a
mot
oriz
ed v
alve
is
not
used
. Lo
w v
olta
ge w
iring
mus
t be
Cla
ss 1
and
vol
tage
rat
ing
equa
l to
or g
reat
er th
an u
nit s
uppl
y vo
ltage
.6.
Fact
ory
cut J
W1
jum
per.
Dry
con
tact
will
be
avai
labl
e be
twee
n A
L1 a
nd A
L2.
7.Tr
ansf
orm
er s
econ
dary
gro
und
via
gree
n w
ire w
ith y
ello
w s
trip
from
“C
” te
rmin
al to
con
trol
box
.8.
Fan
mot
ors
are
fact
ory
wire
d fo
r m
ediu
m s
peed
. For
hig
h or
low
spe
ed, r
emov
e B
LU w
ire fr
om fa
n m
otor
spee
d ta
p “M
” an
d co
nnec
t to
“H”
for
high
spe
ed o
r “L
” fo
r lo
w s
peed
.9.
For
low
spe
ed,
rem
ove
BLK
wire
fro
m B
R “
6” a
nd r
epla
ce w
ith R
ED
. C
onne
ct B
LK a
nd B
RN
wire
sto
geth
er.
10.
Opt
iona
l LO
N w
ires.
Onl
y co
nnec
t if L
ON
con
nect
ion
is d
esire
d at
the
wal
l sen
sor.
11.
For
blo
wer
mot
ors
with
lead
s. F
or m
ediu
m o
r lo
w s
peed
, dis
conn
ect B
LK w
ire fr
om B
R “
6”. C
onne
ct B
LKan
d O
RG
/PU
R w
ire to
geth
er. C
onne
ct R
ED
for
low
or
BLU
for
med
ium
to B
R “
6”.
12.
Blo
wer
mot
or f
acto
ry w
ired
to m
ediu
m s
peed
. Fo
r lo
w s
peed
rem
ove
BLU
wire
fro
m m
ediu
m t
ap a
ndco
nnec
t to
low
spe
ed t
ap.
For
high
spe
ed,
rem
ove
BLU
wire
fro
m e
xisi
ting
spee
d ta
p an
d re
mov
e B
RN
jum
per
wire
fro
m h
igh
spee
d ta
p. C
onne
ct B
LU w
ire t
o hi
gh s
peed
tap
. Ta
pe o
ff un
conn
ecte
d en
d of
BR
N ju
mpe
r.13
.T
he 4
60-v
uni
ts u
sing
an
inte
rnal
sec
onda
ry p
ump
will
req
uire
a n
eutr
al w
ire f
rom
the
sup
ply
side
in
orde
r to
feed
the
acce
ssor
y w
ith 2
65-v
.
LEG
EN
D
AL
—A
larm
Rel
ay C
onta
cts
BM
—B
low
er M
otor
BM
C—
Blo
wer
Mot
or C
apac
itor
BR
—B
low
er R
elay
CB
—C
ircui
t Bre
aker
CC
—C
ompr
esso
r C
onta
ctor
CO
—S
enso
r, C
onde
nsat
e O
verf
low
FP
1—
Sen
sor,
Low
Tem
pera
ture
Pro
tect
ion,
Wat
er C
oil
FP
2—
Sen
sor,
Low
Tem
pera
ture
Pro
tect
ion,
Air
Coi
lH
P—
Hig
h-P
ress
ure
Sw
itch
HP
WS
—H
igh-
Pre
ssur
e W
ater
Sw
itch
JW1
—C
lippa
ble
Fie
ld S
elec
tion
Jum
per
LO
C—
Loss
of C
harg
e P
ress
ure
Sw
itch
LO
N—
Loca
l Ope
ratin
g N
etw
ork
MV
—M
otor
ized
Val
veM
VE
S—
Mot
oriz
ed V
alve
End
Sw
itch
NE
C—
Nat
iona
l Ele
ctric
al C
ode
P1
—F
ield
Wiri
ng T
erm
inal
Blo
ckR
VS
—R
ever
sing
Val
ve S
olen
oid
TR
AN
S—
Tran
sfor
mer
TX
V—
The
rmos
tatic
Exp
ansi
on V
alve
Fie
ld L
ine
Vol
tage
Wir
ing
Fie
ld L
ow V
olta
ge W
irin
gP
rinte
d C
ircui
t Tra
ceO
ptio
nal W
irin
g*O
ptio
nal W
irin
g.
Rel
ay/C
onta
ctor
Coi
l
Con
dens
ate
Pan
Sol
enoi
d C
oil
Tem
pera
ture
Sw
itch
The
rmis
tor
Gro
und
Wire
Nut
Rel
ay C
onta
cts
- N
.C.
Rel
ay C
onta
cts
- N
.O.
Low
Pre
ssur
e S
witc
h
Hig
h P
ress
ure
Sw
itch
Spl
ice
Cap
Circ
uit B
reak
er
a50-8487
14
NO
TE
S:
1.C
ompr
esso
r an
d bl
ower
mot
or th
erm
ally
pro
tect
ed in
tern
ally
.2.
All
wiri
ng to
the
unit
mus
t com
ply
with
NE
C a
nd lo
cal c
odes
.3.
Tran
sfor
mer
is w
ired
to 4
60-v
BLK
/RE
D le
ad fo
r 46
0-3-
60 u
nits
. Tr
ansf
orm
er is
ene
rgy
limiti
ng o
r m
ayha
ve c
ircui
t bre
aker
.4.
FP
1 th
erm
isto
r pr
ovid
es l
ow t
empe
ratu
re p
rote
ctio
n fo
r w
ater
. W
hen
usin
g an
tifre
eze
solu
tions
, cu
tJW
3 ju
mpe
r.5.
Ref
er t
o m
icro
proc
esso
r co
ntro
l, LO
N,
ther
mos
tat
inst
alla
tion
inst
ruct
ions
for
wir
ing
to t
he u
nit.
Wire
“N01
” fr
om L
ON
to “
Y1”
Del
uxe
D w
hen
mot
oriz
ed v
alve
is n
ot u
sed.
The
rmos
tat w
irin
g m
ust b
e C
lass
1 an
d vo
ltage
rat
ing
equa
l to
or g
reat
er th
an u
nit s
uppl
y vo
ltage
.6.
Fact
ory
cut J
W4
jum
per.
Dry
con
tact
will
be
avai
labl
e be
twee
n A
L1 a
nd A
L2.
7.Tr
ansf
orm
er s
econ
dary
gro
und
via
gree
n w
ire w
ith y
ello
w s
trip
e fr
om “
C”
term
inal
to c
ontr
ol b
ox.
8.B
low
er m
otor
is
fact
ory
wire
d fo
r m
ediu
m a
nd h
igh
spee
ds.
For
any
othe
r co
mbi
natio
n of
spe
eds,
atta
ch b
lack
wire
to
the
high
er o
f th
e tw
o de
sire
d sp
eed
taps
at
the
mot
or,
and
atta
ch t
he b
lue
wire
to
the
low
er o
f the
two
desi
red
spee
d ta
ps.
9.B
low
er m
otor
is fa
ctor
y w
ired
for
high
and
low
spe
eds.
No
othe
r co
mbi
natio
n is
ava
ilabl
e.10
.O
ptio
nal L
ON
wire
s. O
nly
conn
ect i
f LO
N c
onne
ctio
n is
des
ired
at th
e w
all s
enso
r.11
.T
he 4
60-v
uni
ts u
sing
an
inte
rnal
sec
onda
ry p
ump
will
req
uire
a n
eutr
al w
ire f
rom
the
sup
ply
side
in
orde
r to
feed
the
acce
ssor
y w
ith 2
65-v
.
LEG
EN
D
AL
—A
larm
Rel
ay C
onta
cts
BM
—B
low
er M
otor
BM
C—
Blo
wer
Mot
or C
apac
itor
BR
—B
low
er R
elay
CB
—C
ircui
t Bre
aker
CC
—C
ompr
esso
r C
onta
ctor
CO
—S
enso
r, C
onde
nsat
e O
verf
low
FP
1—
Sen
sor,
Low
Tem
pera
ture
Pro
tect
ion,
Wat
er C
oil
FP
2—
Sen
sor,
Low
Tem
pera
ture
Pro
tect
ion,
Air
Coi
lH
P—
Hig
h-P
ress
ure
Sw
itch
HP
WS
—H
igh-
Pre
ssur
e W
ater
Sw
itch
JW1
—C
lippa
ble
Fie
ld S
elec
tion
Jum
per
LO
C—
Loss
of C
harg
e P
ress
ure
Sw
itch
LO
N—
Loca
l Ope
ratin
g N
etw
ork
MV
—M
otor
ized
Val
veM
VE
S—
Mot
oriz
ed V
alve
End
Sw
itch
NE
C—
Nat
iona
l Ele
ctric
al C
ode
P1
—F
ield
Wiri
ng T
erm
inal
Blo
ckR
VS
—R
ever
sing
Val
ve S
olen
oid
TR
AN
S—
Tran
sfor
mer
TX
V—
The
rmos
tatic
Exp
ansi
on V
alve
Fie
ld L
ine
Vol
tage
Wiri
ngF
ield
Low
Vol
tage
Wir
ing
Prin
ted
Circ
uit T
race
Opt
iona
l Wir
ing
*Opt
iona
l Wir
ing.
Rel
ay/C
onta
ctor
Coi
l
Con
dens
ate
Pan
Sol
enoi
d C
oil
Tem
pera
ture
Sw
itch
The
rmis
tor
Gro
und
Wire
Nut
Rel
ay C
onta
cts
- N
.C.
Rel
ay C
onta
cts
- N
.O.
Low
Pre
ssur
e S
witc
h
Hig
h P
ress
ure
Sw
itch
Spl
ice
Cap
Circ
uit B
reak
er
Fig
. 15
— 5
0HQ
P07
2-12
0 U
nit
s w
ith
Del
uxe
D a
nd
LO
N C
on
tro
ller
(460
V)
Del
uxe
D
a50-8488
15
Y
W
O
G
R
C
AL1
AL2
A
CR
CMP1
FAN
PWR
HS1/EXH/RVS
PREMIERLINK
CR
COMPLETEC
CONTROL
J4J6 J5
J8J1
PW
R
SP
SA
LW
CM
PS
AF
E
T T T
Y1
G
R
C
AL1
CMP1
FAN
PWR
PREMIERLINK
DELUXED
CONTROL
J4
J8J1
PW
R
CM
PS
AF
E
HS2
HS1
CMP2
Y2
W1
O/W2
J6 J5
SPT
SAT
LWT
Fig. 16 — Premierlink™ Controller Applications Wiring with Complete C Control
LEGEND
NOTE: Reversing valve is on in Coolingmode.
CR — Control RelayLWT — Leaving Water Temperature SensorSAT — Supply Air Temperature SensorSPT — Space Temperature Sensor
Fig. 17 — Premierlink Controller Applications Wiring with Deluxe D Control
LEGEND
NOTE: Reversing valve is on in Coolingmode.
LWT — Leaving Water Temperature SensorSAT — Supply Air Temperature SensorSPT — Space Temperature Sensor
16
WH
SP
-OP
EN
FS
D (
FIE
LDS
UP
PLI
ED
AN
DIN
STA
LLE
D)
RG
ND
C
Fig
. 18
— 5
0HQ
P07
2-12
0 U
nit
s w
ith
Co
mp
lete
C a
nd
WS
HP
Op
en M
ult
iple
Pro
toco
l Co
ntr
ols
LEG
EN
DB
M—
Blo
wer
Mot
orB
R—
Blo
wer
Rel
ayC
O—
Con
dens
ate
Ove
rflo
wF
SD
—F
ire/S
mok
e D
etec
tor
LWT
—Le
avin
g W
ater
Tem
pera
ture
N.C
.—
Nor
mal
ly C
lose
dO
AD
—O
utsi
de A
ir D
ampe
rO
CC
—O
ccup
ancy
Inpu
t Con
tact
RH
—R
elat
ive
Hum
idity
SA
T—
Sup
ply
Air
Tem
pera
ture
SP
T—
Spa
ce T
empe
ratu
re
a50-8543
17
WS
HP
-OP
EN
FS
D (
FIE
LDS
UP
PLI
ED
AN
DIN
STA
LLE
D)
GN
DC R
Fig
. 19
— U
nit
s w
ith
Del
uxe
D a
nd
WS
HP
Op
en M
ult
iple
Pro
toco
l Co
ntr
ols
LEG
EN
DB
M—
Blo
wer
Mot
orC
O—
Con
dens
ate
Ove
rflo
wF
SD
—F
ire/S
mok
e D
etec
tor
LWT
—Le
avin
g W
ater
Tem
pera
ture
N.C
.—
Nor
mal
ly C
lose
dO
AD
—O
utsi
de A
ir D
ampe
rO
CC
—O
ccup
ancy
Inpu
t Con
tact
RH
—R
elat
ive
Hum
idity
SA
T—
Sup
ply
Air
Tem
pera
ture
SP
T—
Spa
ce T
empe
ratu
re
a50-8544
a50-8544
18
012207-1BT
485BT
LED1
DB
Inst
all B
T48
5 w
here
dev
ice
is
loca
ted
at th
e en
d of
net
wor
k se
gmen
t onl
y.
+ 2
4vac
(If n
ot in
stal
led,
it m
ust b
e co
nnec
ted
to D
O-5
)
DE
HU
MID
IFY
OU
TP
UT
CO
NT
AC
T (
DO
-6)
(FA
CT
OR
Y O
PT
ION
)
FA
N S
PE
ED
(D
O-7
) (M
ED
OR
LO
W)
OA
DA
MP
ER
(A
O-2
)
FA
N S
PE
ED
(D
O-8
) (H
IGH
OR
FA
N O
N )
LWT
(In
put 6
)
SA
T (
LAT
) (I
nput
7)
SP
AC
E C
O2
SE
NS
OR
+24
vac
4-20
mA
+ -
RE
D
YLW
OR
NB
RN
PIN
K
VIO
PIN
KA
O1
– A
ux R
ehea
t or
Con
d.
WT
R. L
oop
Eco
n. (
AO
1)
BLU
RE
D
BR
N-
Gnd
Con
dens
ate
Ove
rflo
w S
witc
h(D
I-3/
Dry
Con
tact
)
GR
NF
an (
DO
-1)
(Fan
On
or L
ow S
peed
)
PIN
KA
ux H
eat (
DO
-2)
OR
NR
ever
sing
Val
ve (
DO
-3)
Com
p #2
(D
O-4
)
Com
p #1
(D
O-5
)B
LU
Com
p S
tatu
s (D
I-5)
SP
T P
LUS
Sen
sor
Sho
wn
+12V
Rnet-
Rnet+
Gnd
RED
BLACK
WHITE
GREEN
To WSHP Controller Rnet Terminals (J13)
FIE
LD IN
ST
ALL
ED
1234
0 5
1
6
2
7
3
8
4
90 5
1
6
2
7
3
8
4
9
12
34
56
78
ON
12
34
56
78
12
12
34
1234
12
3
12345678G
RE
EN
WH
ITE
BLA
CK
RE
D
Fie
ld In
stal
led
J5
J12
J13
J20
J19
J22
J17
J11
J14
To
SP
T P
LUS
12
34
56
11
107
J4
J1J2
SW
3
MS
BLS
B
MS
TP
Bau
d
9600
19
.2k
38.
4k
76.8
k
SP
AC
E R
H
SE
NS
OR
+24
vac
4-20
mA
+ -
WH
T
FIE
LD IN
ST
ALL
ED
(O
PT
ION
AL)
– S
EE
NO
TE
2
Loca
l Acc
ess
Por
t
a50-8380
Fig
. 20
— W
SH
P O
pen
Co
ntr
ol
WS
HP
Op
en In
pu
ts a
nd
Ou
tpu
ts T
able
*The
se in
puts
are
con
figur
able
.
INP
UT
/OU
TP
UT
TY
PE
PA
RT
NU
MB
ER
STY
PE
OF
I/O
CO
NN
EC
TIO
NP
IN N
UM
BE
RS
CH
AN
NE
LD
ES
IGN
AT
ION
Inpu
ts
Spa
ce T
empe
ratu
re S
enso
rS
PS
, SP
PL,
SP
PC
omm
unic
atin
gJ1
3, 1
- 4
Loca
l Acc
ess
Por
t
Spa
ce R
elat
ive
Hum
idity
33Z
CS
EN
SR
H-0
1A
I (4
- 20
mA
)J4
, 5 a
nd 6
Ana
log
Inpu
t 1
Indo
or A
ir Q
ualit
y33
ZC
SE
NC
O2
AI (
4 -2
0mA
)J4
, 2 a
nd 3
Ana
log
Inpu
t 2
Con
dens
ate
Sw
itch
N/A
BI (
Dry
Con
tact
s)J1
, 2B
inar
y In
put 3
Sta
ge 1
Com
pres
sor
Sta
tus
N/A
BI (
Dry
Con
tact
s)J1
, 10
Bin
ary
Inpu
t 5
Leav
ing
Con
dens
er W
ater
Tem
pera
ture
10K
Typ
e II
AI (
10K
The
rmis
tor)
J2, 1
and
2A
nalo
g In
put 6
Sup
ply
Air
Tem
pera
ture
33Z
CS
EN
SAT
AI (
10K
The
rmis
tor)
J2, 3
and
4A
nalo
g In
put 7
Out
puts
Mod
ulat
ing
Val
ve (
Aux
iliar
y H
eat/W
ater
E
cono
miz
er)
N/A
AO
(0-
10V
dc/2
- 1
0Vdc
)J2
4 a
nd 5
*A
nalo
g O
utpu
t 1
Out
side
Air
Dam
per
N/A
AO
(0-
10V
dc/2
- 1
0Vdc
)J2
2 1
and
2*A
nalo
g O
utpu
t 2
Sup
ply
Fan
On/
Low
Spe
ed(3
Spe
ed O
nly)
N/A
BO
Rel
ay (
24V
AC
, 1A
)J1
, 4*
Bin
ary
Out
put 1
(G
)
Aux
iliar
y H
eat o
r 2-
Pos
ition
Wat
er L
oop
Eco
nom
izer
N/A
BO
Rel
ay (
24V
AC
, 1A
)J1
, 5*
Bin
ary
Out
put 2
Rev
ersi
ng V
alve
(B
or
O O
pera
tion)
N/A
BO
Rel
ay (
24V
AC
, 1A
)J1
, 6*
Bin
ary
Out
put 3
(R
V)
Com
pres
sor
2nd
Sta
geN
/AB
O R
elay
(24
VA
C, 1
A)
J1, 7
Bin
ary
Out
put 4
(Y
2)
Com
pres
sor
1st S
tage
N/A
BO
Rel
ay (
24V
AC
, 1A
)J1
, 8B
inar
y O
utpu
t 5 (
Y1)
Deh
umid
ifica
tion
Rel
ayN
/AB
O R
elay
(24
VA
C, 1
A)
J11,
7 a
nd 8
(N
O)
Bin
ary
Out
put 6
Fan
Spe
ed M
ediu
m/L
ow (
3 S
peed
Onl
y)N
/AB
O R
elay
(24
VA
C, 1
A)
J11,
5 a
nd 6
(N
O)*
Bin
ary
Out
put 7
Fan
Spe
ed H
igh/
Low
(3
Spe
ed O
nly)
N/A
BO
Rel
ay (
24V
AC
, 1A
) J
11, 2
and
3 (
NO
)*B
inar
y O
utpu
t 8
SP
T P
LUS
Sen
sor
Sho
wn
+12V
Rnet-
Rnet+
Gnd
RED
BLACK
WHITE
GREEN
To WSHP Controller Rnet Terminals (J13)
FIE
LD IN
ST
ALL
ED
LEG
EN
D
NO
TE
S:
1.M
ount
the
wat
er s
ourc
e he
at p
ump
cont
rolle
r in
the
equ
ipm
ent
cont
rols
encl
osur
e w
ith a
t le
ast
two
no.
6 x
1 in
. se
lf-ta
ppin
g sc
rew
s. A
llow
ade
-qu
ate
clea
ranc
e fo
r w
iring
.2.
Ver
ify s
enso
r po
wer
and
wiri
ng r
equi
rem
ents
pri
or to
mak
ing
any
term
ina-
tions
. S
enso
rs r
equi
ring
a s
epar
ate
isol
ated
24
vac
pow
er s
ourc
e w
ill n
otut
ilize
WS
HP
term
inal
s J4
-1, o
r 4.
AI
—A
nalo
g In
put
AO
—A
nalo
g O
utpu
tB
I—
Bin
ary
Inpu
tB
O—
Bin
ary
Out
put
SP
T—
Spa
ce T
empe
ratu
reFa
ctor
y W
iring
Fie
ld W
iring
19
Table 3 — Electrical Data — 50HQP072-120
LEGEND
*Time-delay fuse or HACR circuit breaker.
Table 4 — Low Voltage VA Ratings
* Standard transformer is 75 VA.
UNIT50HQP
VOLTAGE(3 Ph-60 Hz)
VOLTAGERANGE
BLOWERMOTOR
FACTORY-INSTALLED
OPTION
COMPRESSOR FANMOTOR TOTAL
FLA MCA MOCP*Min Max Qty RLA LRA HP FLA
072
208/230 197 254 Standard 2 10.4 73.0 1.5 4.0 24.8 27.4 35Large 2 10.4 73.0 2.0 6.2 27.0 29.6 35
460 414 506 Standard 2 5.8 38.0 1.5 2.0 13.6 15.1 20Large 2 5.8 38.0 2.0 3.1 14.7 16.1 20
575 518 633 Standard 2 3.8 36.5 1.5 1.4 9.0 9.9 15Large 2 3.8 36.5 2.0 2.3 9.9 10.8 15
096
208/230 197 254 Standard 2 13.7 83.1 2.0 6.2 33.6 37.0 50Large 2 13.7 83.1 3.0 9.2 36.6 40.0 50
460 414 506 Standard 2 6.2 41.0 2.0 3.1 15.5 17.0 20Large 2 6.2 41.0 3.0 4.3 16.7 18.3 20
575 518 633 Standard 2 4.8 33.0 2.0 2.3 11.9 13.1 15Large 2 4.8 33.0 3.0 3.4 13.0 14.2 15
120
208/230 197 254 Standard 2 15.6 110.0 2.0 9.2 40.4 44.3 50Large 2 15.6 110.0 3.0 14.1 45.3 49.2 60
460 414 506 Standard 2 7.8 52.0 2.0 4.3 19.9 21.9 25Large 2 7.8 52.0 3.0 7.0 22.6 24.6 30
575 518 633 Standard 2 5.8 38.9 2.0 3.4 15.0 16.5 20Large 2 5.8 38.9 3.0 5.2 16.8 18.3 20
FLA — Full Load AmpsHACR — Heating, Air Conditioning, and RefrigerationLRA — Locked Rotor AmpsMCA — Minimum Circuit AmpsMOCP — Minimum Over Current ProtectionRLA — Rated Load Amps
COMPONENTS IN UNIT VATypical Blower Contactor 6 - 9Typical Reversing Valve Solenoid (2) 8 - 1230A Compressor Contactor (2) 12 - 18Complete C Board (2) 10 - 18Deluxe D Board (2) 16 - 24
Remaining VA for Accessories* Units with Complete C Units with Deluxe D
18 - 3912 - 33
NOTE: Low voltage connector may be removed for easy installation.
Fig. 21 — Low Voltage Field Wiring
Complete C 2Complete C 1
POWERBLOCK
Fig. 22 — Line Voltage Wiring
a50-85454
20
Step 10 — Install Field Control WiringTHERMOSTAT CONNECTIONS — The thermostat shouldbe wired directly to the Aquazone™ control board. SeeFig. 23 and 24.
The thermostat should be located on an interior wall in alarger room, away from supply duct drafts. DO NOT locate thethermostat in areas subject to sunlight, drafts or on externalwalls. The wire access hole behind the thermostat may in cer-tain cases need to be sealed to prevent erroneous temperaturemeasurement.
Position the thermostat back plate against the wall so that itappears level and so the thermostat wires protrude through themiddle of the back plate. Mark the position of the back platemounting holes and drill holes with a 3/16-in. bit. Install sup-plied anchors and secure plate to the wall. Thermostat wiremust be 18 AWG wire. Wire the appropriate thermostat asshown in Fig. 25 and 26 to the low voltage terminal strip on theComplete C or Deluxe D control board.
Most heat pump thermostats will work with a Carrier unit,provided the thermostat has the correct number of heating andcooling stages.
WATER FREEZE PROTECTION — The Aquazone controlallows the field selection of source fluid freeze protectionpoints through jumpers. The factory setting of jumper JW3(FP1) is set for water at 30 F. In earth loop applications, jumperJW3 should be clipped to change the setting to 13 F whenusing antifreeze in colder earth loop applications. See Fig. 23.
AIR COIL FREEZE PROTECTION — The air coil freezeprotection jumper JW2 (FP2) is factory set for 30 F and shouldnot need adjusting.
ACCESSORY CONNECTIONS — Terminal labeled A onthe control is provided to control accessory devices such aswater valves, electronic air cleaners, humidifiers, etc. This sig-nal operates with the compressor terminal. See Fig. 24. Referto the specific unit wiring schematic for details.NOTE: The A terminal should only be used with 24 voltsignals — not line voltage signals.
WATER SOLENOID VALVES — Water solenoid valves maybe used on variable flow systems and ground water installa-tions. A typical well water control valve wiring which canlimit waste water in a lockout condition is shown in Fig. 23. Aslow closing valve may be required to prevent water hammer.When using a slow closing valve, special wiring conditionsneed to be considered. The valve takes approximately 60 sec-onds to open (very little water will flow before 45 seconds) andit activates the compressor only after the valve is completelyopened by closing its end switch. When wired as shown, thevalve will have the following operating characteristics:
1. Remain open during a lockout.2. Draw approximately 25 to 35 VA through the “Y” signal
of the thermostat.
a50-6268tf.tif
AQUAZONE CONTROL (Complete C Control Shown)
Fig. 23 — Typical Aquazone™ Control BoardJumper Locations
IMPORTANT: The use of a slow-closing water solenoidvalve can overheat the anticipators of electromechanicalthermostats. Only use relay based electronic thermostats.
TYPICALWATERVALVE
C
A
24 VAC
TERMINAL STRIP P2
Fig. 24 — Typical Aquazone Accessory Wiring(Control D Shown)
THERMOSTAT
Compressor-Stage 1
Reversing Valve
Fan
24Vac Hot
Y1
Y2
O
G
R
Y
O
G
R
CompleteC 1
Y
O
G
R
24Vac Com C C
Compressor-Stage 2
C
ALALAL
CompleteC 2
Fig. 25 — Thermostat Wiring to Complete C Board
THERMOSTAT
Compressor-Stage 1
Reversing Valve
Fan
24Vac Hot
Y1
Y2
O
G
R
O
G
R
Deluxe D 1
Y
O
G
R
24Vac Com C C
Compressor-Stage 2
C
AL1AL1AL
Y1
Y2
COM 2 COM 2
Deluxe D 2
Fig. 26 — Thermostat Wiring to Deluxe D Board
21
PRE-START-UPSystem Checkout — When the installation is complete,follow the system checkout procedure outlined below beforestarting up the system. Be sure:
1. Voltage is within the utilization range specifications of theunit compressor and fan motor and voltage is balancedfor 3-phase units.
2. Fuses, breakers and wire are correct size.3. Low voltage wiring is complete.4. Piping and system flushing is complete.5. Air is purged from closed loop system.6. System is balanced as required. Monitor if necessary.7. Isolation valves are open.8. Water control valves or loop pumps are wired.9. Condensate line is open and correctly pitched.
10. Transformer switched to lower voltage tap if necessary.11. Blower rotates freely — shipping support is removed.12. Blower speed is on correct setting.13. Air filter is clean and in position.14. Service/access panels are in place.15. Return-air temperature is 40 to 80 F for heating and 50 to
110 F for cooling.16. Air coil is clean.17. Control field selected settings are correct.AIR COIL — To obtain maximum performance, the air coilshould be cleaned before starting the unit. A ten percentsolution of dishwasher detergent and water is recommendedfor both sides of the coil. Rinse thoroughly with water.
Airflow and External Static Pressure — The50HQP units are available with standard, low, and high-staticfactory-installed options. These options will substitute a differ-ent blower drive sheave for each static range. In addition, cer-tain static ranges may require the optional large fan motor.SHEAVE ADJUSTMENT — The 50HQP units are suppliedwith a variable sheave drive on the fan motor to adjust for dif-fering airflows at various ESP (external static pressure) condi-tions. See Tables 5-7 for unit airflows. When fully closed, thesheave will produce the highest static capability (higher rpm).
To adjust sheave position, follow the procedure outlinedbelow:
1. Loosen belt tension and remove belt.2. Loosen set screw on fan motor.3. Open sheave to desired position.4. Retighten set screw and replace belt.
NOTE: Set belt tension as outlined below.BELT TENSION ADJUSTMENT — An overly loose beltwill, upon starting motor, produce a slippage “squeal” andcause premature belt failure and or intermittent airflow. Anoverly tight belt can cause premature motor or blower bear-ing failure. To adjust the belt tension, follow the procedureoutlined below:
1. Remove belt from motor sheave.2. Lift motor assembly.3. Loosen the 5/16-in. hex nuts on the grommet motor adjust-
ment bolts (2 per bolt). To increase the belt tension loosenthe top hex nut. To decrease the belt tension loosen thebottom hex nut.
4. Turn the bolts by hand to the desired position then tightenthe 5/16-in. hex nuts (2 per bolt).
5. Lower the motor assembly.6. Install the belt.7. The belt tension can be adjusted by using one of the fol-
lowing methods:a. Tighten until belt deflects approximately 1/2-in.
with very firm finger pressure.b. Grasp belt midway between two pulleys and twist
for a 90-degreerotation.NOTE: Adjusting less than 90degreeswill over-tighten the belt and adjusting more than 90degreeswill loosen belt.
c. Set proper belt tension to 70 to 80 lb.NOTE: The motor position should not need adjustment. Motorsheave position is at mid position of each sheave. For example,the motor sheave is 2.5 turns open on a 5-turn sheave. The belttension adjustment can also be accomplished by turning the5/16-in. hex nuts to the desired position.NOTE: Available airflows for all units are shown inTables 5-7.
22
Table 5 — Blower Data — 50HQP072
LEGEND
NOTES:1. Units factory shipped with standard static sheave and drive at 2.5 turns
open (2400 cfm at 0.5 in. wg ESP Wet Coil). Other speeds require fieldselection.
2. ISO/AHRI rating point with standard static sheave and drive at 2.5 turnsopen (2400 cfm at 0.5 in. wg ESP Wet Coil). Other speeds require fieldselection.
3. For applications requiring higher static pressures, contact your localrepresentative.
4. Based on standard 12x12 blower.5. Performance data does not include drive losses and is based on sea level
conditions.6. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 208 V
for 208-230 V units.7. For wet coil performance first calculate the face velocity of the air coil
(Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]). Then for velocitiesof 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by0.08 in. wg, 400 fpm by 0.12 in. wg and 500 fpm by 0.16 in. wg.
8. Large motor size is 2 hp for 50HQP072.
RATEDCFM
EXTERNAL STATIC PRESSURE (in. wg)0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
1800BHP — — 0.28 0.32 0.35 0.39 0.42 0.45 0.48 0.52 0.56 0.60 0.64 0.69 0.72 0.76Motor Type — — B B B A A A A A A C C C C CRPM — — 599 645 690 735 775 815 850 885 910 940 965 995 1015 1040Turns Open — — 3 2 1 4 3.5 2.5 2 1.5 1 5 4.5 4 3.5 3
1900BHP — — 0.31 0.36 0.40 0.44 0.49 0.53 2.50 0.62 0.65 0.69 0.73 0.76 0.80 0.84Motor Type — — B B A A A A A A C C C C C CRPM — — 604 655 695 740 780 820 855 890 920 950 980 1005 1030 1055Turns Open — — 3 2 5 4 3 2.5 2 1.5 5.5 4.5 4 3.5 3 3
2000BHP — 0.31 0.34 0.39 0.45 0.50 0.54 0.59 0.63 0.67 0.72 0.75 0.79 0.82 0.86 0.90Motor Type — B B B A A A A A A C C C C C CRPM — 568 615 660 705 750 785 825 860 895 930 960 990 1015 1040 1065Turns Open — 4.5 2.5 1.5 4.5 3.5 3 2.5 1.5 1 5 4.5 4 3.5 3 2.5
2100BHP 0.33 0.38 0.42 0.46 0.50 0.54 0.59 0.65 0.70 0.74 0.78 0.81 0.85 0.89 0.94 0.98Motor Type B B B A A A A A A A C C C C C CRPM 531 583 630 670 715 755 795 835 875 905 940 970 1000 1025 1055 1080Turns Open 4.5 3.5 2 5 4.5 3.5 2.5 2 1.5 1 5 4 4 3 2.5 2.5
2200BHP 0.37 0.40 0.45 0.49 0.55 0.60 0.65 0.70 0.75 0.79 0.83 0.87 0.92 0.96 1.00 1.04Motor Type B B B A A A A A A C C C C C E ERPM 552 599 645 685 730 770 810 850 885 915 950 980 1010 1040 1065 1090Turns Open 4 3 2 5 4 3 2.5 2 1.5 5.5 4.5 4 3.5 3 2.5 2
2300BHP 0.42 0.47 0.51 0.56 0.60 0.65 0.70 0.75 0.80 0.84 0.89 0.94 1.00 1.05 1.10 1.16Motor Type B B B A A A A A A C C C E E E ERPM 573 620 660 705 745 785 820 860 895 925 960 990 1020 1050 1075 1105Turns Open 3.5 2.5 1.5 4.5 4 3 2.5 1.5 1 5 4.5 4 3.5 3 2.5 2
2400BHP 0.48 0.52 0.57 0.61 0.66 0.72 0.78 0.83 0.87 0.92 0.97 1.02 1.07 1.13 1.19 1.25Motor Type B B A A A A A A A C C E E E E ERPM 604 645 690 730 765 805 845 880 910 945 975 1010 1035 1065 1095 1125Turns Open 3 2 5 4 3.5 2.5 2 1.5 1 5 4 3.5 3 2.5 2 1.5
2500BHP 0.52 0.57 0.61 0.66 0.72 0.78 0.83 0.89 0.94 1.00 1.03 1.08 1.14 1.20 1.25 1.31Motor Type B B A A A A A A C E E E E E E ERPM 620 660 700 740 780 815 850 885 920 950 985 1015 1045 1075 1100 1130Turns Open 2.5 1.5 4.5 4 3 2.5 2 1.5 5.5 4.5 4 3.5 3 2.5 2 1.5
2600BHP 0.56 0.61 0.66 0.70 0.76 0.82 0.88 0.93 0.98 1.04 1.08 1.14 1.20 1.26 1.32 1.37Motor Type B A A A A A A A C E E E E E E ERPM 635 675 715 750 790 825 860 895 925 960 990 1020 1050 1080 1110 1135Turns Open 2.5 5 4.5 3.5 3 2 1.5 1 5 4.5 4 3.5 3 2.5 1.5 1.5
2700BHP 0.61 0.66 0.71 0.76 0.82 0.87 0.93 0.98 1.04 1.10 1.15 1.21 1.27 1.33 1.39 1.45Motor Type B A A A A A A A E E E E E E E ERPM 655 695 730 770 805 840 875 905 940 970 1000 1030 1060 1090 1120 1145Turns Open 2 4.5 4 3.5 2.5 2 1.5 1 5 4.5 3.5 3 2.5 2 1.5 1
2800BHP 0.66 0.72 0.77 0.83 0.88 0.93 0.99 1.05 1.11 1.16 1.22 1.30 1.37 1.44 1.51 1.57Motor Type B A A A A A A D E E E E E E E ERPM 670 710 750 785 815 850 885 915 950 980 1010 1040 1070 1100 1130 1155Turns Open 1.5 4.5 3.5 3 2.5 1.5 1.5 1 4.5 4 3.5 3 2.5 2 1.5 1
2900BHP 0.71 0.77 0.82 0.87 0.93 0.98 1.04 1.10 1.16 1.22 1.30 1.36 1.43 1.50 1.57 1.63Motor Type A A A A A A D E E E E E E E E ERPM 685 725 765 795 830 860 895 925 955 985 1020 1045 1075 1105 1135 1160Turns Open 5 4 3.5 3 2 1.5 1 5 4.5 4 3.5 3 2.5 1.5 1 1
3000BHP 0.79 0.84 0.90 0.95 1.01 1.07 1.13 1.19 1.25 1.31 1.38 1.46 1.52 1.59 1.66 —Motor Type A A A A A D D E E E E E E E E —RPM 710 745 780 815 850 885 915 945 975 1005 1035 1065 1090 1120 1150 —Turns Open 4.5 4 3 2.5 2 1 1 5 4 3.5 3 2.5 2 1.5 1 —
— — Operation Not RecommendedBHP — Brake HorsepowerESP — External Static PressureRPM — Revolutions Per MinuteA — Units with Standard Static/Standard Motor OptionB — Units with Low Static/Standard Motor OptionC — Units with High Static/Standard Motor OptionD — Units with Standard Static/Large Motor OptionE — Units with High Static/Large Motor Option
23
Table 6 — Blower Data — 50HQP096
LEGEND
NOTES:1. Units factory shipped with standard static sheave and drive at 3 turns
open (3200 cfm at 0.6 in. wg ESP Wet Coil). Other speeds require fieldselection.
2. ISO/AHRI rating point with standard static sheave and drive at 4 turnsopen (3200 cfm at 0.4 in. wg ESP Wet Coil). Other speeds require fieldselection.
3. For applications requiring higher static pressures, contact your localrepresentative.
4. Based on standard 12 x12 blower.5. Performance data does not include drive losses and is based on sea
level conditions.6. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e.,
208 v for 208-230 v units.7. For wet coil performance first calculate the face velocity of the air coil
(Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]). Then for veloci-ties of 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by0.08 in. wg, 400 fpm by 0.12 in. wg and 500 fpm by 0.16 in. wg.
8. Large motor size is 3 hp for 50HQP096.
RATEDCFM
EXTERNAL STATIC PRESSURE (in. wg)0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
2400BHP 0.45 0.5 0.54 0.59 0.63 0.69 0.74 0.8 0.85 0.9 0.94 0.99 1.04 1.1 1.16 1.22Motor Type B B B B B A A A A A A A A A C CRPM 578 625 665 705 745 785 820 860 895 925 960 990 1020 1050 1080 1110Turns Open 5 4 3 2.5 1.5 5.5 5 4 3.5 3 2.5 2 1.5 1 4 3.5
2500BHP 0.5 0.55 0.59 0.64 0.69 0.75 0.81 0.88 0.92 0.97 1.01 1.06 1.12 1.17 1.23 1.29Motor Type B B B B A A A A A A A A A C C CRPM 599 645 685 725 765 800 835 875 905 940 970 1005 1035 1060 1090 1120Turns Open 4.5 3.5 2.5 2 6 5 4.5 4 3.5 3 2.5 2 1 4.5 3.5 3
2600BHP 0.55 0.6 0.65 0.69 0.75 0.8 0.86 0.92 0.97 1.02 1.08 1.13 1.19 1.25 1.3 1.36Motor Type B B B B A A A A A A A A A C C CRPM 625 665 705 740 780 815 850 885 920 950 985 1015 1045 1075 1100 1130Turns Open 4 3 2.5 1.5 5.5 5 4.5 3.5 3 2.5 2 1.5 1 4 3.5 3
2700BHP 0.6 0.65 0.7 0.75 0.8 0.86 0.91 0.97 1.02 1.08 1.14 1.2 1.26 1.32 1.38 1.44Motor Type B B B A A A A A A A A A C C C CRPM 645 685 725 760 795 830 865 900 930 960 995 1025 1055 1085 1115 1140Turns Open 3.5 2.5 2 6 5.5 4.5 4 3.5 3 2.5 2 1.5 4.5 4 3.5 3
2800BHP 0.65 0.71 0.76 0.82 0.87 0.93 0.98 1.04 1.1 1.16 1.21 1.28 1.36 1.43 1.5 1.56Motor Type B B B A A A A A A A A A C C C CRPM 665 705 745 780 810 845 880 910 945 975 1005 1035 1065 1095 1125 1150Turns Open 3 2.5 1.5 5.5 5 4.5 4 3 2.5 2 1.5 1 4 3.5 3 2.5
2900BHP 0.71 0.76 0.82 0.87 0.92 0.98 1.03 1.09 1.16 1.22 1.29 1.36 1.43 1.5 1.57 1.63Motor Type B B A A A A A A A A A A C C C CRPM 685 720 760 795 825 860 890 920 955 985 1015 1045 1075 1105 1135 1160Turns Open 2.5 2 6 5.5 5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5
3000BHP 0.78 0.84 0.89 0.95 1 1.06 1.12 1.18 1.24 1.3 1.37 1.43 1.5 1.58 1.64 1.71Motor Type B B A A A A A A A A A C C C C CRPM 700 740 775 810 845 880 910 940 970 1000 1030 1055 1085 1115 1140 1170Turns Open 2.5 1.5 5.5 5 4.5 4 3.5 2.5 2 1.5 1 4.5 3.5 3.5 3 2.5
3100BHP 0.85 0.91 0.96 1.02 1.08 1.14 1.22 1.29 1.36 1.44 1.5 1.57 1.63 1.7 1.76 1.82Motor Type B B A A A A A A A A A C C C C CRPM 720 755 790 825 860 890 925 955 985 1015 1040 1070 1095 1125 1150 1175Turns Open 2 1 5.5 4.5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5 2
3200BHP 0.93 1 1.07 1.14 1.2 1.26 1.32 1.38 1.44 1.51 1.57 1.64 1.7 1.78 1.85 1.92Motor Type B A A A A A A A A A C C C C C CRPM 740 775 810 845 875 905 935 965 995 1025 1050 1080 1105 1135 1160 1185Turns Open 1.5 5.5 5 4.5 4 3.5 3 2 1.5 1 4.5 4 3.5 3 2.5 2
3300BHP 1.01 1.08 1.14 1.21 1.28 1.33 1.39 1.45 1.51 1.58 1.64 1.72 1.78 1.84 1.93 2Motor Type B A A A A A A A A A C C C C C ERPM 755 790 820 855 890 915 945 975 1005 1035 1060 1090 1115 1140 1170 1195Turns Open 1 5.5 5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 3 2.5 2
3400BHP 1.08 1.15 1.22 1.29 1.35 1.41 1.47 1.53 1.59 1.68 1.75 1.83 1.9 1.96 2.02 2.08Motor Type A A A A A A A A A A C C C C E ERPM 765 800 835 870 900 930 960 990 1015 1045 1070 1100 1125 1150 1175 1200Turns Open 6 5 4.5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5 2 2
3500BHP 1.16 1.23 1.29 1.36 1.42 1.48 1.54 1.6 1.66 1.73 1.79 1.85 1.92 2.01 2.09 2.17Motor Type A A A A A A A A A C C C C E E ERPM 780 815 845 880 910 940 970 1000 1025 1055 1080 1105 1130 1160 1185 1210Turns Open 5.5 5 4.5 3.5 3 2.5 2 1.5 1 4.5 4 3.5 3 2.5 2 1.5
3600BHP 1.24 1.3 1.37 1.44 1.51 1.58 1.65 1.72 1.78 1.86 1.92 1.98 2.06 2.13 2.21 2.29Motor Type A A A A A A A A A C C C E E E ERPM 795 825 860 890 920 950 980 1010 1035 1065 1090 1115 1145 1165 1190 1215Turns Open 5.5 4.5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5 2.5 2 1.5
3700BHP 1.34 1.4 1.46 1.53 1.61 1.68 1.75 1.82 1.9 1.97 2.06 2.13 2.21 2.28 2.36 2.44Motor Type A A A A A A A A C C E E E E E ERPM 820 850 880 910 940 970 1000 1025 1055 1080 1110 1135 1160 1180 1205 1230Turns Open 5 4.5 3.5 3 2.5 2 1.5 1 4.5 4 3.5 3 2.5 2 1.5 1.5
3800BHP 1.43 1.49 1.56 1.63 1.7 1.78 1.86 1.94 2.02 2.12 2.2 2.28 2.34 2.42 2.5 2.58Motor Type A A A A A A A A E E E E E E E ERPM 840 870 900 930 960 990 1020 1045 1070 1100 1125 1150 1170 1195 1220 1245Turns Open 4.5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5 2.5 2 1.5 1
3900BHP 1.58 1.64 1.71 1.78 1.85 1.93 2.01 2.09 2.19 2.27 2.35 2.41 2.49 2.57 2.65 —Motor Type A A A A A A D D E E E E E E E —RPM 865 890 920 950 980 1010 1035 1060 1090 1115 1140 1160 1185 1210 1235 —Turns Open 4 4 3 2.5 2 1.5 1 1 4 3.5 3 2.5 2 1.5 1.5 —
4000BHP 1.68 1.75 1.83 1.92 2 2.08 2.16 2.26 2.34 2.42 2.5 2.56 2.64 2.72 2.8 —Motor Type A A A A D D D E E E E E E E E —RPM 885 910 940 970 1000 1025 1050 1080 1105 1130 1155 1175 1200 1225 1250 —Turns Open 4 3.5 2.5 2.5 2 1 1 4 3.5 3 2.5 2 2 1.5 1 —
— — Operation Not RecommendedBHP — Brake HorsepowerESP — External Static PressureRPM — Revolutions Per MinuteA — Units with Standard Static/Standard Motor OptionB — Units with Low Static/Standard Motor OptionC — Units with High Static/Standard Motor OptionD — Units with Standard Static/Large Motor OptionE — Units with High Static/Large Motor Option
24
Table 7 — Blower Data — 50HQP120
LEGEND
NOTES:1. Units factory shipped at ISO/AHRI setting with standard static
sheave and drive at 3.5 turns open (4000 cfm at 0.5 in. wgESP). Other speeds require field selection.
2. For applications requiring higher static pressures, contact yourlocal representative.
3. Based on standard 12x12 blower.4. Performance data does not include drive losses and is based
on sea level conditions.5. All airflow is rated at lowest voltage if unit is dual voltage rated,
i.e., 208 v for 208-230 v units.6. For wet coil performance first calculate the face velocity of the
air coil (Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]).Then for velocities of 200 fpm reduce the static capability by0.03 in. wg, 300 fpm by 0.08 in. wg, 400 fpm by 0.12 in. wg and500 fpm by 0.16 in. wg.
RATEDCFM
EXTERNAL STATIC PRESSURE (in. wg)0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
3000BHP 0.75 0.81 0.86 0.91 0.97 1.03 1.09 1.15 1.21 1.27 1.34 1.41 1.47 1.54 1.61 1.67Motor Type B B B B B B A A A A A A A A A ARPM 680 720 755 790 825 860 895 925 955 985 1015 1045 1070 1100 1130 1155Turns Open 5 4 3.5 3 2.5 1.5 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1
3100BHP 0.82 0.88 0.94 0.99 1.04 1.1 1.17 1.26 1.33 1.4 1.46 1.53 1.59 1.66 1.72 1.8Motor Type B B B B B A A A A A A A A A A CRPM 700 735 775 805 840 875 905 940 970 1000 1025 1055 1080 1110 1135 1165Turns Open 4.5 4 3 2.5 2 6 5.5 4.5 4.5 3.5 3 3 2.5 2 1.5 4
3200BHP 0.9 0.96 1.03 1.1 1.17 1.23 1.29 1.35 1.41 1.47 1.55 1.61 1.68 1.74 1.81 1.89Motor Type B B B B B A A A A A A A A A A CRPM 720 755 790 825 860 890 920 950 980 1010 1040 1065 1095 1120 1145 1175Turns Open 4 3.5 3 2 1.5 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 3.5
3300BHP 0.98 1.04 1.11 1.18 1.25 1.31 1.37 1.43 1.49 1.55 1.62 1.68 1.75 1.81 1.88 1.95Motor Type B B B B A A A A A A A A A A A CRPM 740 770 805 840 875 905 935 965 995 1020 1050 1075 1105 1130 1155 1180Turns Open 4 3 2.5 2 6 5.5 5 4 4 3 2.5 2.5 2 1.5 1 3.5
3400BHP 1.06 1.13 1.19 1.26 1.33 1.38 1.44 1.5 1.56 1.65 1.72 1.8 1.87 1.94 2 2.06Motor Type B B B B A A A A A A A A A A C CRPM 755 790 820 855 890 915 945 975 1005 1035 1060 1090 1115 1140 1165 1190Turns Open 3.5 3 2.5 1.5 6 5 4.5 4 3.5 3 2.5 2 1.5 1 4 3
3500BHP 1.14 1.21 1.27 1.34 1.4 1.46 1.52 1.58 1.65 1.71 1.77 1.84 1.9 1.98 2.06 2.14Motor Type B B B A A A A A A A A A A A C CRPM 770 805 835 870 900 930 960 990 1020 1045 1070 1100 1125 1150 1175 1200Turns Open 3 2.5 2 6 5.5 5 4.5 3.5 3.5 3 2.5 2 1.5 1 3.5 3
3600BHP 1.23 1.29 1.36 1.42 1.5 1.57 1.64 1.71 1.77 1.84 1.9 1.96 2.05 2.13 2.21 2.27Motor Type B B B A A A A A A A A A A C C CRPM 790 820 855 885 915 945 975 1005 1030 1060 1085 1110 1140 1165 1190 1210Turns Open 3 2.5 1.5 6 5.5 4.5 4 3.5 3 2.5 2 1.5 1.5 4 3.5 3
3700BHP 1.32 1.38 1.44 1.51 1.58 1.65 1.73 1.81 1.88 1.96 2.03 2.1 2.18 2.26 2.34 2.42Motor Type B B A A A A A A A A A A A C C CRPM 810 840 870 900 930 960 990 1020 1045 1075 1100 1125 1150 1175 1200 1225Turns Open 2.5 2 6 5.5 5 4.5 4 3 3 2.5 2 1.5 1 3.5 3 2.5
3800BHP 1.41 1.47 1.54 1.61 1.68 1.75 1.82 1.91 1.99 2.07 2.17 2.25 2.31 2.39 2.47 2.55Motor Type B B A A A A A A A A A A A C C CRPM 830 860 890 920 950 980 1005 1035 1060 1085 1115 1140 1160 1185 1210 1235Turns Open 2 1.5 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 1 3.5 3 2.5
3900BHP 1.54 1.6 1.67 1.74 1.82 1.89 1.96 2.04 2.14 2.22 2.3 2.38 2.46 2.52 2.6 2.68Motor Type B A A A A A A A A A A A C C C CRPM 850 875 905 935 965 995 1020 1045 1075 1100 1125 1150 1175 1195 1220 1245Turns Open 2 6 5.5 5 4.5 3.5 3 2.5 2.5 2 1.5 1 3.5 3 2.5 2
4000BHP 1.63 1.71 1.78 1.86 1.94 2.03 2.11 2.19 2.27 2.37 2.45 2.51 2.59 2.67 2.75 2.85Motor Type A A A A A A A A A A A A C C C CRPM 865 895 920 950 980 1010 1035 1060 1085 1115 1140 1160 1185 1210 1235 1260Turns Open 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 1 3.5 3 2.5 2
4100BHP 1.73 1.81 1.9 1.97 2.05 2.12 2.2 2.27 2.34 2.42 2.52 2.62 2.7 2.8 2.9 —Motor Type A A A A A A A A A A A C C C C —RPM 885 915 945 970 1000 1025 1055 1080 1105 1130 1155 1180 1200 1225 1250 —Turns Open 6 5.5 4.5 4 4 3 2.5 2 2 1.5 1 3.5 3 2.5 2 —
4200BHP 1.87 1.94 2.02 2.08 2.16 2.24 2.32 2.4 2.48 2.58 2.68 2.76 2.86 2.96 — —Motor Type A A A A A A A A A A C C C C — —RPM 905 935 965 990 1020 1045 1070 1095 1120 1145 1170 1190 1215 1240 — —Turns Open 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 3.5 3.5 3 2.5 — —
4300BHP 2 2.07 2.16 2.23 2.31 2.41 2.49 2.57 2.66 2.74 2.84 2.94 3.02 3.15 — —Motor Type A A A A A A A A A C C C E E — —RPM 930 955 985 1010 1035 1065 1090 1115 1140 1160 1185 1210 1230 1255 — —Turns Open 5 4.5 4 3.5 3 2.5 2 1.5 1.5 4 3.5 3 2.5 2 — —
4400BHP 2.14 2.22 2.32 2.4 2.48 2.56 2.65 2.74 2.82 2.92 3 3.1 3.18 — — —Motor Type A A A A A A A A A C E E E — — —RPM 950 975 1005 1030 1055 1080 1110 1135 1155 1180 1200 1225 1245 — — —Turns Open 4.5 4 3.5 3 3 2.5 2 1.5 1 4 3 3 2.5 — — —
4500BHP 2.3 2.38 2.46 2.54 2.62 2.72 2.8 2.88 3 3.08 3.16 3.26 — — — —Motor Type A A A A A A A A D E E E — — — —RPM 970 995 1020 1045 1070 1100 1125 1145 1170 1195 1215 1240 — — — —Turns Open 4.5 4 3.5 3 2.5 2 1.5 1.5 1 3.5 3 2.5 — — — —
— — Operation Not RecommendedBHP — Brake HorsepowerESP — External Static PressureRPM — Revolutions Per MinuteA — Units with Standard Static/Standard Motor OptionB — Units with Low Static/Standard Motor OptionC — Units with High Static/Standard Motor OptionD — Units with Standard Static/Large 3 Hp Motor OptionE — Units with High Static/Large 3 Hp Motor Option
25
Table 7 — Blower Data — 50HQP120 (cont)
LEGEND
NOTES:1. Units factory shipped at ISO/AHRI setting with standard static
sheave and drive at 3.5 turns open (4000 cfm at 0.5 in. wgESP). Other speeds require field selection.
2. For applications requiring higher static pressures, contact yourlocal representative.
3. Based on standard 12x12 blower.4. Performance data does not include drive losses and is based
on sea level conditions.5. All airflow is rated at lowest voltage if unit is dual voltage rated,
i.e., 208 v for 208-230 v units.6. For wet coil performance first calculate the face velocity of the
air coil (Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]).Then for velocities of 200 fpm reduce the static capability by0.03 in. wg, 300 fpm by 0.08 in. wg, 400 fpm by 0.12 in. wg and500 fpm by 0.16 in. wg.
FIELD SELECTABLE INPUTSJumpers and DIP (dual in-line package) switches on the
control board are used to customize unit operation and can beconfigured in the field.
Complete C Control Jumper Settings (SeeFig. 12)WATER COIL FREEZE PROTECTION (FP1) LIMITSETTING — Select jumper 3, (JW3-FP1 Low Temp) tochoose FP1 limit of 10 F or 30 F. To select 30 F as the limit,DO NOT clip the jumper. To select 10 F as the limit, clip thejumper. AIR COIL FREEZE PROTECTION (FP2) LIMIT SET-TING — Select jumper 2 (JW2-FP2 Low Temp) to chooseFP2 limit of 10 F or 30 F. To select 30 F as the limit, DO NOTclip the jumper. To select 10 F as the limit, clip the jumper. ALARM RELAY SETTING — Select jumper 1 (JW1-AL2Dry) for connecting alarm relay terminal (AL2) to 24 vac (R) orto remain as a dry contact (no connection). To connect AL2 toR, do not clip the jumper. To set as dry contact, clip the jumper.
Complete C Control DIP Switches — The Com-plete C Control has 1 DIP switch block with five switches. SeeFig. 12.PERFORMANCE MONITOR (PM) — DIP switch 1 willenable or disable this feature. To enable the PM, set the switchto ON. To disable the PM, set the switch to OFF.STAGE 2 — DIP switch 2 will enable or disable compressordelay. Set DIP switch to OFF for stage 2 in which the compres-sor will have a 3-second delay before energizing.
NOTE: The alarm relay will not cycle during Test mode ifswitch is set to OFF, stage 2.DIP SWITCH 3 — not used.DIP SWITCH 4 — not used.DIP SWITCH 5 — DIP switch 5 is used to initiate 1 or 3 triesfor the FP1 fault. If water freeze protection for the water coilthen DIP switch 5 can be set to lockout on the FP1 fault afterone try.
Deluxe D Control Jumper Settings (SeeFig. 13)WATER COIL FREEZE PROTECTION (FP1) LIMITSETTING — Select jumper 3, (JW3-FP1 Low Temp) tochoose FP1 limit of 10 F or 30 F. To select 30 F as the limit,DO NOT clip the jumper. To select 10 F as the limit, clip thejumper. AIR COIL FREEZE PROTECTION (FP2) LIMIT SET-TING — Select jumper 2 (JW2-FP2 Low Temp) to chooseFP2 limit of 10 F or 30 F. To select 30 F as the limit, DO NOTclip the jumper. To select 10 F as the limit, clip the jumper. ALARM RELAY SETTING — Select jumper 4 (JW4-AL2Dry) for connecting alarm relay terminal (AL2) to 24 vac (R) orto remain as a dry contact (no connection). To connect AL2 toR, do not clip the jumper. To set as dry contact, clip the jumper.LOW PRESSURE SETTING — The Deluxe D Control canbe configured for Low Pressure Setting (LP). Select jumper 1(JW1-LP Norm Open) for choosing between low pressure in-put normally opened or closed. To configure for normallyclosed operation, do not clip the jumper. To configure for nor-mally open operation, clip the jumper.
Deluxe D Control DIP Switches — The Deluxe DControl has 2 DIP switch blocks. Each DIP switch block has 8
RATEDCFM
EXTERNAL STATIC PRESSURE (in. wg)0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
4600BHP 2.39 2.45 2.54 2.63 2.72 2.83 2.92 3 3.1 3.18 3.28 3.38 — — — —Motor Type A A A A A A A D D E E E — — — —RPM 980 1000 1025 1050 1075 1105 1130 1150 1175 1195 1220 1245 — — — —Turns Open 4 3.5 3.5 3 2.5 2 1.5 1 1 3.5 3 2.5 — — — —
4700BHP 2.46 2.52 2.62 2.72 2.82 2.92 3.02 3.12 3.22 3.32 3.4 3.5 — — — —Motor Type A A A A A A D D E E E E — — — —RPM 985 1005 1030 1055 1080 1105 1130 1155 1180 1205 1225 1250 — — — —Turns Open 4 3.5 3 2.5 2 1.5 1.5 1 4 3.5 2.5 2.5 — — — —
4800BHP 2.57 2.64 2.74 2.84 2.94 3.04 3.14 3.24 3.32 3.42 3.52 3.6 — — — —Motor Type A A A A A D D D E E E E — — — —RPM 990 1010 1035 1060 1085 1110 1135 1160 1180 1205 1230 1250 — — — —Turns Open 4 3.5 3 2.5 2 1.5 1 1 3.5 3 2.5 2 — — — —
4900BHP 2.68 2.78 2.88 3 3.06 3.16 3.26 3.36 3.44 3.54 3.64 3.75 — — — —Motor Type A A A D D D D E E E E E — — — —RPM 995 1020 1045 1070 1090 1115 1140 1165 1185 1210 1235 1255 — — — —Turns Open 3.5 3 3 2.5 1.5 1.5 1 4 3.5 3 2.5 2 — — — —
5000BHP 2.82 2.92 3 3.1 3.2 3.28 3.38 3.48 3.56 3.66 3.74 — — — — —Motor Type A A D D D D D E E E E — — — — —RPM 1005 1030 1050 1075 1100 1120 1145 1170 1190 1215 1235 — — — — —Turns Open 3.5 3 2.5 2 1.5 1 1 3.5 3 2.5 2 — — — — —
— — Operation Not RecommendedBHP — Brake HorsepowerESP — External Static PressureRPM — Revolutions Per MinuteA — Units with Standard Static/Standard Motor OptionB — Units with Low Static/Standard Motor OptionC — Units with High Static/Standard Motor OptionD — Units with Standard Static/Large 3 Hp Motor OptionE — Units with High Static/Large 3 Hp Motor Option
IMPORTANT: Jumpers and DIP switches should only beclipped when power to control board has been turned off.
26
switches and is labeled either S1 or S2 on the circuit board. SeeFig. 13.DIP SWITCH BLOCK 1 (S1) — This set of switches offersthe following options for Deluxe D Control configuration:Performance Monitor (PM) — Set switch 1 to enable or dis-able performance monitor. To enable the PM, set the switch toON. To disable the PM, set the switch to OFF.Compressor Relay Staging Operation — Switch 2 will enableor disable compressor relay staging operation. The compressorrelay can be set to turn on with stage 1 or stage 2 call from thethermostat. This setting is used with dual stage units (units with2 compressors and 2 Deluxe D controls) or in master/slave ap-plications. In master/slave applications, each compressor andfan will stage according to its switch 2 setting. If switch is set tostage 2, the compressor will have a 3-second delay before ener-gizing during stage 2 demand. NOTE: If DIP switch is set for stage 2, the alarm relay will notcycle during Test mode.Heating/Cooling Thermostat Type — Switch 3 provides selec-tion of thermostat type. Heat pump or heat/cool thermostatscan be selected. Select OFF for heat/cool thermostats. When inheat/cool mode, Y1 is used for cooling stage 1, Y2 is used forcooling stage 2, W1 is used for heating stage 1 and O/W2 isused for heating stage 2. Select ON for heat pump applications.In heat pump mode, Y1 used is for compressor stage 1, Y2 isused for compressor stage 2, W1 is used for heating stage 3 oremergency heat, and O/W2 is used for RV (heating or cooling)depending upon switch 4 setting.O/B Thermostat Type — Switch 4 provides selection for heatpump O/B thermostats. O is cooling output. B is heating out-put. Select ON for heat pumps with O output. Select OFF forheat pumps with B output.Dehumidification Fan Mode — Switch 5 provides selectionof normal or dehumidification fan mode. Select OFF for dehu-midification mode. The fan speed relay will remain OFF dur-ing cooling stage 2. Select ON for normal mode. The fan speedrelay will turn on during cooling stage 2 in normal mode.Switch 6 — Not used.Boilerless Operation — Switch 7 provides selection of boil-erless operation and works in conjunction with switch 8. Inboilerless operation mode, only the compressor is used forheating when FP1 is above the boilerless changeover tempera-ture set by switch 8 below. Select ON for normal operation orselect OFF for boilerless operation.Boilerless Changeover Temperature — Switch 8 on S1 pro-vides selection of boilerless changeover temperature set point.Select OFF for set point of 50 F or select ON for set pointof 40 F.
If switch 8 is set for 50 F, then the compressor will be usedfor heating as long as the FP1 is above 50 F. The compressorwill not be used for heating when the FP1 is below 50 F and thecompressor will operate in emergency heat mode, staging onEH1 and EH2 to provide heat. If a thermal switch is being usedinstead of the FP1 thermistor, only the compressor will be usedfor heating mode when the FP1 terminals are closed. If the FP1terminals are open, the compressor is not used and the controlgoes into emergency heat mode. DIP SWITCH BLOCK 2 (S2) — This set of DIP switches isused to configure accessory relay options. See Fig. 13.Switches 1 to 3 — These DIP switches provide selection ofAccessory 1 relay options. See Table 8 for DIP switchcombinations.Switches 4 to 6 — These DIP switches provide selectionof Accessory 2 relay options. See Table 9 for DIP switchcombinations.
Auto Dehumidification Mode or High Fan Mode — Switch 7provides selection of auto dehumidification fan mode or highfan mode. In auto dehumidification fan mode the fan speedrelay will remain off during cooling stage 2 if terminal H isactive. In high fan mode, the fan enable and fan speed relayswill turn on when terminal H is active. Set the switch to ON forauto dehumidification fan mode or to OFF for high fan mode.Switch 8 — Not used.
Table 8 — DIP Switch Block S2 — Accessory 1 Relay Options
LEGEND
NOTE: All other DIP switch combinations are invalid.
Table 9 — DIP Switch Block S2 —Accessory 2 Relay Options
LEGEND
NOTE: All other switch combinations are invalid.
Deluxe D Control Accessory Relay Configura-tions — The following accessory relay settings are applica-ble for both Deluxe D controls only:CYCLE WITH FAN — In this configuration, the relay will beON any time the Fan Enable relay is on.CYCLE WITH COMPRESSOR — In this configuration, therelay will be ON any time the Compressor relay is on. DIGITAL NIGHT SET BACK (NSB) — In this configura-tion, the relay will be ON if the NSB input is connected toground C.NOTE: If there are no relays configured for digital NSB, thenthe NSB and override (OVR) inputs are automatically config-ured for mechanical operation.MECHANICAL NIGHT SET BACK — When NSB input isconnected to ground C, all thermostat inputs are ignored. Athermostat set back heating call will then be connected to theOVR input. If OVR input becomes active, then the Deluxe Dcontrol will enter Night Low Limit (NLL) staged heatingmode. The NLL staged heating mode will then provide heatingduring the NSB period.WATER VALVE (SLOW OPENING) — If relay is config-ured for Water Valve (slow opening), the relay will start 60 sec-onds prior to starting compressor relay.OUTSIDE AIR DAMPER (OAD) — If relay is configuredfor OAD, the relay will normally be ON any time the FanEnable relay is energized. The relay will not start for 30 min-utes following a return to normal mode from NSB, when NSBis no longer connected to ground C. After 30 minutes, the relaywill start if the Fan Enable is set to ON.
ACCESSORY 1RELAY OPTIONS
DIP SWITCH POSITION1 2 3
Cycle with Fan On On OnDigital NSB Off On On
Water Valve — Slow Opening On Off OnOAD On On Off
NSB — Night SetbackOAD — Outside Air Damper
ACCESSORY 2RELAY OPTIONS
DIP SWITCH POSITION4 5 6
Cycle with Fan On On OnDigital NSB Off On On
Water Valve — Slow Opening On Off OnOAD On On Off
NSB — Night SetbackOAD — Outside Air Damper
27
START-UP
Use the procedure outlined below to initiate proper unitstart-up.NOTE: This equipment is designed for indoor installation only.
Operating LimitsENVIRONMENT — This equipment is designed for indoorinstallation ONLY. Extreme variations in temperature, humidi-ty and corrosive water or air will adversely affect the unit per-formance, reliability and service life.POWER SUPPLY — A voltage variation of ± 10% of name-plate utilization voltage is acceptable.UNIT STARTING CONDITIONS — All units can start andoperate in an ambient of 45 F with entering-air at 50/45 F (db/wb), entering water at 30 F and with both air and water at theflow rates used. All other conditions are the same as shown inTable 11.NOTE: These operating conditions are not normal or continu-ous operating conditions. It is assumed that such a start-up isfor the purpose of bringing the building space up to occupancytemperature.
Air Coil Cleaning — To obtain maximum performance,the air coil should be cleaned before start-up. A 10% solutionof dishwasher detergent and water is recommended for bothsides of the coil. A thorough water rinse should follow. Ultra-violet based anti-bacterial systems may damage e-coated aircoils.
Start Up System1. Restore power to system.2. Turn thermostat fan position to ON. Blower should start.3. Balance airflow at registers.4. Adjust all valves to the full open position and turn on the
line power to all heat pump units.5. Operate unit in the cooling cycle. Room temperature
should be approximately 45 to 110 F dry bulb. Loopwater temperature entering the heat pumps should bebetween 50 and 110 F.
NOTE: Three factors determine the operating limits of aunit: (1) entering-air temperature, (2) water temperature and(3) ambient temperature. Whenever any of these factors areat a minimum or maximum level, the other two factors mustbe at a normal level to ensure proper unit operation. SeeTable 10. Extreme variations in temperature and humidity and/or corrosive water or air will adversely affect unit perfor-mance, reliability, and service life.
Scroll Compressor Rotation — It is important to becertain compressor is rotating in the proper direction. Todetermine whether or not compressor is rotating in the properdirection:
1. Connect service gages to suction and discharge pressurefittings.
Table 10 — Operating Limits
LEGEND
*With antifreeze, optional extended range insulation and low temperature cut-out jumper clipped for antifreeze.
2. Energize the compressor.3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start-up.If the suction pressure does not drop and the discharge
pressure does not rise to normal levels:1. Turn off power to the unit. Install disconnect tag.2. Reverse any two of the unit power leads.3. Reapply power to the unit and verify pressures are correct.The suction and discharge pressure levels should now move
to their normal start-up levels.When the compressor is rotating in the wrong direction, the
unit makes an elevated level of noise and does not providecooling.
After a few minutes of reverse operation, the scroll com-pressor internal overload protection will open, thus activatingthe unit lockout. This requires a manual reset. To reset, turn thethermostat on and then off.NOTE: There is a 5-minute time delay before the compressorwill start.
Unit Start-Up in Cooling Mode1. Adjust the unit thermostat to the warmest position.
Slowly reduce the thermostat position until the compres-sor activates.
2. Check for cool air delivery at unit grille a few minutesafter the unit has begun to operate.
3. Verify that the compressor is on and that the water flowrate is correct by measuring pressure drop through theheat exchanger using pressure/temperature plugs. Checkthe elevation and cleanliness of the condensate lines; anydripping could be a sign of a blocked line. Be sure thecondensate trap includes a water seal.
4. Check the temperature of both supply and dischargewater.
5. Air temperature drop across the coil should be checkedwhen compressor is operating. Air temperature dropshould be between 15 and 25 F.
Unit Start-Up in Heating ModeNOTE: Operate the unit in heating cycle after checking thecooling cycle. Allow 5 minutes between tests for the pressureor reversing valve to equalize.
1. Turn thermostat to lowest setting and set thermostatswitch to HEAT position.
2. Slowly turn the thermostat to a higher temperature untilthe compressor activates.
3. Check for warm air delivery at the unit grille within a fewminutes after the unit has begun to operate.
4. Check the temperature of both supply and dischargewater.
CAUTION
To avoid equipment damage, DO NOT leave system filledin a building without heat during the winter unless anti-freeze is added to system water. Condenser coils neverfully drain by themselves and will freeze unless winterizedwith antifreeze.
WARNING
When the disconnect switch is closed, high voltage is pres-ent in some areas of the electrical panel. Exercise cautionwhen working with the energized equipment.
AIR LIMITS COOLING (F) HEATING (F)Min. Ambient Air (db) 45 39Rated Ambient Air (db) 81 68Max. Ambient Air (db) 110 85Min. Ent. Air (db/wb) 60/50 50Rated Entering Air (db/wb) 81/66 68Max. Entering Air (db/wb) 95/75 80
WATER LIMITSMin. Entering Water 30* 20*Normal Entering Water 50-110 30-70Max. Entering Water 120 90
NORMAL WATER FLOW 1.5 to 3.0 gpm / ton
db — Dry Bulbwb — Wet Bulb
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5. Air temperature rise across the coil should be checkedwhen compressor is operating. Air temperature riseshould be between 20 and 30 F after 15 minutes at load.
6. Check for vibration, noise and water leaks.
Unit Start-Up with WSHP Open Controls —The WSHP Open is a multi-protocol (default BACnet*) con-troller with extensive features, flexible options and powerfulcapabilities. The unit comes from the factory pre-programmedand needs minimal set up to function in a BAS (BuildingAutomation System) system or provide additional capabilitiesto Carrier's WSHP product line. Most settings on the controllerhave factory defaults set for ease of installation. There are afew settings that must be configured in the field and severalsettings that can be adjusted if required by unique job condi-tions. Refer to Appendix A — WSHP Open Screen Configura-tion. In order to configure the unit, a BACview6 display isrequired. See Fig. 27.NOTE: If the WSHP Open control has lost its programming,all display pixels will be displayed on the SPT sensor. See theWSHP Third Party Integration Guide.
When the unit is OFF, the SPT sensor will indicate OFF.When power is applied, the SPT sensor will indicate tempera-ture in the space at 78 F.
To start-up a unit with WSHP Open controls:1. To plug in the BACview6 handheld display into a SPT
sensor, point the two ears on the connector up and tilt thebottom of the plug toward you. Insert the plug up into theSPT sensor while pushing the bottom of the plug awayfrom you.
2. BACview6 should respond with "Establishing Connec-tion." The Home screen will then appear on the displayshowing operating mode and space temperature. Pressany button to continue.See Appendix A — WSHP Open Screen Configurationfor the hierarchal structure of the WSHP Open controller.All functions of the controller can be set from the Homescreen.
3. When the Login is requested, type 1111 and push the OKsoftkey. The Logout will then be displayed to indicate thepassword was accepted.
4. To set the Clock if it is not already displayed:a. Select System Settings from the Home screen, then
press Clockset.b. Scroll to hour, minute and second using the arrow
keys. Use the number keypad to set actual time.c. Scroll to day, month and year using arrow keys.
Use number keypad to set date.5. To set Daylight Savings Time (DST):
a. Push the DST softkey. The display will indicate02:00:060 which is equal to 2:00AM.
b. To program the beginning and end dates, scrolldown to the beginning month and press the enterkey. The softkeys (INCR and DECR) will activateto increment the month in either direction, Jan,Feb, March, etc.
c. Use number keys to select the day of month andyear.
d. Push the OK softkey to finalize the data.6. To view configuration settings:
a. Select the Config softkey.b. Select the Service Config softkey. Scroll through
the factory settings by using the up and downarrow keys. See below for factory settings.
Only the following settings will need to bechecked.• # of Fan Speeds — This should be set to "1" for
units with PSC motors and set to "3" for unitswith ECM motors.
• Compressor Stages — This should be set to "1."• Factory Dehumidification Reheat Coil —
This should be set to "none" unless the modulat-ing hot water reheat option is supplied in the unit,then set to "installed."
• The condenser water limit needs to be verifieddepending on design parameters and application,whether geothermal or boiler/tower.
7. To view unit configuration settings:a. Select the Unit Configuration softkey, then select
Unit.b. Scroll through the unit settings by using the up and
down arrow keys. Unit settings include:• Fan Mode: Default Continuous• Fan Delay:• Minimum SAT Cooling: Default 50 F• Maximum SAT Heating: Default 110 F• Filter Service Alarm: Must be set from 0 to 9999
hr8. To set local schedules:
a. Select the Schedule softkey from the Configurationscreen, then press enter.
b. Select Weekly, then press enter (7 schedulesavailable).
c. Select day and press enter.d. Press enter again and select ADD or DEL (DECR
or INCR) set schedule.e. Enter ON/OFF time, then press continue.f. Press OK to apply and save to a particular day of
the week.g. Continue to add the same or different schedule spe-
cific days of the week.To add exceptions to the schedule:i. Press Add softkey.ii. Select exception type from following:• Date• Date Range• Week-N-Day• Calender Reference
9. Go back to Home Screen.10. Remove BACview6 cable from SPT sensor by reversing
the process in Step 1.11. Perform system test.
Flow Regulation — Flow regulation can be accom-plished by two methods. Most water control valves have a flowadjustment built into the valve. By measuring the pressure dropthrough the unit heat exchanger, the flow rate can be deter-mined. Adjust the water control valve until the flow of 1.5 to2 gpm is achieved. Since the pressure constantly varies, twopressure gages may be needed in some applications.
An alternative method is to install a flow control device.These devices are typically an orifice of plastic material de-signed to allow a specified flow rate that are mounted on theoutlet of the water control valve. Occasionally these valvesproduce a velocity noise that can be reduced by applyingsome back pressure. To accomplish this, slightly close theleaving isolation valve of the well water setup.
*Sponsored by ASHRAE (American Society of Heating, Refrigerat-ing, and Air Conditioning Engineers).
29
Flushing — Once the piping is complete, final purging andloop charging is needed. A flush cart pump of at least 1.5 hp isneeded to achieve adequate flow velocity in the loop to purgeair and dirt particles from the loop. Flush the loop in both direc-tions with a high volume of water at a high velocity. Cleaningand flushing the piping system is the single most important stepto ensure proper start-up and continued efficient operation ofthe system. Follow the steps below to properly flush the loop:
1. Verify power is off.2. Install the system with the supply hose connected directly
to the return riser valve. Use a single length of flexiblehose.
3. Open all air vents. Fill the system with water. DO NOTallow system to overflow. Bleed all air from the system.Pressurize and check the system for leaks and repair asappropriate.
4. Verify that all strainers are in place. Carrier recommendsa strainer with a no. 20 stainless steel wire mesh. Start thepumps, and systematically check each vent to ensure thatall air is bled from the system.
5. Verify that make-up water is available. Adjust makeupwater as required to replace the air which was bled fromthe system. Check and adjust the water/air level in the ex-pansion tank.
6. Set the boiler to raise the loop temperature to approxi-mately 86 F. Open a drain at the lowest point in the sys-tem. Adjust the make-up water replacement rate to equalthe rate of bleed.
7. Refill the system and add trisodium phosphate in a pro-portion of approximately one pound per 150 gallons ofwater (or other equivalent approved cleaning agent). Re-set the boiler to raise the loop temperature to 100 F. Cir-culate the solution for a minimum of 8 to 24 hours. At theend of this period, shut off the circulating pump and drainthe solution. Repeat system cleaning if desired.
8. When the cleaning process is complete, remove the short-circuited hoses. Reconnect the hoses to the proper supply,and return the connections to each of the units. Refill thesystem and bleed off all air.
9. Test the system pH with litmus paper. The system watershould be in the range of pH 6.0 to 8.5 (see Table 2). Addchemicals, as appropriate to maintain neutral pH levels.
10. When the system is successfully cleaned, flushed, refilledand bled, check the main system panels, safety cutoutsand alarms. Set the controls to properly maintain looptemperatures.DO NOT use “Stop Leak” or similar chemical agent inthis system. Addition of chemicals of this type to the loopwater will foul the heat exchanger and inhibit unit opera-tion.
11. Restore power.Antifreeze may be added before, during or after the
flushing process. However, depending on when it is addedin the process, it can be wasted. Refer to the Antifreeze sec-tion for more detail.
Loop static pressure will fluctuate with the seasons. Pres-sures will be higher in the winter months than during thewarmer months. This fluctuation is normal and should beconsidered when charging the system initially. Run the unitin either heating or cooling for several minutes to conditionthe loop to a homogenous temperature.
When complete, perform a final flush and pressurize theloop to a static pressure of 40 to 50 psi for winter months or15 to 20 psi for summer months.
After pressurization, be sure to remove the plug from theend of the loop pump motor(s) to allow trapped air to bedischarged and to ensure the motor housing has been flood-ed. Be sure the loop flow center provides adequate flowthrough the unit by checking pressure drop across the heatexchanger.NOTE: Carrier strongly recommends all piping connections,both internal and external to the unit, be pressure tested by anappropriate method prior to any finishing of the interior spaceor before access to all connections is limited. Test pressuremay not exceed the maximum allowable pressure for the unitand all components within the water system. Carrier will notbe responsible or liable for damages from water leaks due toinadequate or lack of a pressurized leak test, or damagescaused by exceeding the maximum pressure rating duringinstallation.
Antifreeze — In areas where entering loop temperaturesdrop below 40 F or where piping will be routed through ar-eas subject to freezing, antifreeze is needed.
Alcohols and glycols are commonly used as antifreezeagents. Freeze protection should be maintained to 15 Fbelow the lowest expected entering loop temperature. For
Fig. 27 — BACview6 Display Interface
a50-8444
WARNING
Electrical shock can cause personal injury and death. Shutoff all power to this equipment during installation. Theremay be more than one disconnect switch. Tag all discon-nect locations to alert others not to restore power untilflushing is completed.
30
example, if the lowest expected entering loop temperature is30 F, the leaving loop temperature would be 22 to 25 F.Therefore, the freeze protection should be at 15 F (30 F –15 F = 15 F).
Calculate the total volume of fluid in the piping system.See Table 11. Use the percentage by volume in Table 12 todetermine the amount of antifreeze to use. Antifreeze con-centration should be checked from a well mixed sample us-ing a hydrometer to measure specific gravity. FREEZE PROTECTION SELECTION — The 30 F FP1factory setting (water) should be used to avoid freeze dam-age to the unit.
Once antifreeze is selected, the JW3 jumper (FP1)should be clipped on the control to select the low tempera-ture (antifreeze 13 F) set point to avoid nuisance faults.
Cooling Tower/Boiler Systems — These systemstypically use a common loop maintained at 60 to 90 F. Theuse of a closed circuit evaporative cooling tower with asecondary heat exchanger between the tower and the waterloop is recommended. If an open type cooling tower isused continuously, chemical treatment and filtering will benecessary.
Table 11 — Approximate Fluid Volume (gal.)per 100 ft of Pipe
LEGEND
NOTE: Volume of heat exchanger is approximately 1.0 gallon.
Table 12 — Antifreeze Percentages by Volume
Ground Coupled, Closed Loop and PlateframeHeat Exchanger Well Systems — These systemsallow water temperatures from 30 to 110 F. The externalloop field is divided up into 2 in. polyethylene supply and re-turn lines. Each line has valves connected in such a way thatupon system start-up, each line can be isolated for flushingusing only the system pumps. Air separation should be locat-ed in the piping system prior to the fluid re-entering the loopfield.
OPERATIONPower Up Mode — The unit will not operate until allthe inputs, terminals and safety controls are checked fornormal operation.
NOTE: The compressor will have a 5-minute anti-shortcycle upon power up.
Units with Aquazone™ Complete C ControlSTANDBY — Y and W terminals are not active in Standbymode, however the O and G terminals may be active, de-pending on the application. The compressor will be off.COOLING — Y and O terminals are active in Coolingmode. After power up, the first call to the compressor willinitiate a 5 to 80 second random start delay and a 5-minuteanti-short cycle protection time delay. After both delays arecomplete, the compressor is energized. NOTE: On all subsequent compressor calls the random startdelay is omitted.HEATING STAGE 1 — Terminal Y is active in heatingstage 1. After power up, the first call to the compressor willinitiate a 5 to 80 second random start delay and a 5-minuteanti-short cycle protection time delay. After both delays arecomplete, the compressor is energized. NOTE: On all subsequent compressor calls the random startdelay is omitted.HEATING STAGE 2 — To enter Stage 2 mode, terminal Wis active (Y is already active). Also, the G terminal must beactive or the W terminal is disregarded. The compressor re-lay will remain on and EH1 is immediately turned on. EH2will turn on after 10 minutes of continual stage 2 demand.NOTE: EH2 will not turn on (or if on, will turn off) if FP1temperature is greater than 45 F and FP2 is greater than110 F.EMERGENCY HEAT — In emergency heat mode, termi-nal W is active while terminal Y is not. Terminal G must beactive or the W terminal is disregarded. EH1 is immediatelyturned on. EH2 will turn on after 5 minutes of continualemergency heat demand.
Units with Aquazone Deluxe D ControlSTANDBY/FAN ONLY — The compressor will be off.The Fan Enable, Fan Speed, and reversing valve (RV) relayswill be on if inputs are present. If there is a Fan 1 demand,the Fan Enable will immediately turn on. If there is a Fan 2demand, the Fan Enable and Fan Speed will immediatelyturn on.NOTE: DIP switch 5 on S1 does not have an effect uponFan 1 and Fan 2 outputs.HEATING STAGE 1 — In Heating Stage 1 mode, the FanEnable and Compressor relays are turned on immediately.Once the demand is removed, the relays are turned off andthe control reverts to Standby mode. If there is a master/slave or dual compressor application, all compressor relaysand related functions will operate per their associated DIPswitch 2 setting on S1.HEATING STAGE 2 — In Heating Stage 2 mode, the FanEnable and Compressor relays are remain on. The FanSpeed relay is turned on immediately and turned off imme-diately once the demand is removed. The control reverts toHeating Stage 1 mode. If there is a master/slave or dualcompressor application, all compressor relays and relatedfunctions will operate per their associated DIP switch 2 set-ting on S1.HEATING STAGE 3 — In Heating Stage 3 mode, the FanEnable, Fan Speed and Compressor relays remain on. TheEH1 output is turned on immediately. With continuing HeatStage 3 demand, EH2 will turn on after 10 minutes. EH1and EH2 are turned off immediately when the Heating Stage3 demand is removed. The control reverts to Heating Stage2 mode.
Output EH2 will be off if FP1 is greater than 45 F ANDFP2 (when shorted) is greater than 110 F during Heating
IMPORTANT: All alcohols should be pre-mixed andpumped from a reservoir outside of the building or intro-duced under water level to prevent alcohols from fuming.
PIPE DIAMETER (in.) VOLUME (gal.)Copper 1 4.1
1.25 6.41.5 9.2
Rubber Hose 1 3.9Polyethylene 3/4 IPS SDR11 2.8
1 IPS SDR11 4.511/4 IPS SDR11 8.01/2 IPS SDR11 10.92 IPS SDR11 18.011/4 IPS SCH40 8.311/2 IPS SCH40 10.92 IPS SCH40 17.0
IPS — Internal Pipe SizeSCH — ScheduleSDR — Standard Dimensional Ratio
ANTIFREEZEMINIMUM TEMPERATURE FOR
FREEZE PROTECTION (F)10 15 20 25
Methanol (%) 25 21 16 10100% USP Food GradePropylene Glycol (%) 38 30 22 15
Ethanol (%) 29 25 20 14
31
Stage 3 mode. This condition will have a 30-secondrecognition time. Also, during Heating Stage 3 mode, EH1,EH2, Fan Enable, and Fan Speed will be ON if G input isnot active.EMERGENCY HEAT — In Emergency Heat mode, theFan Enable and Fan Speed relays are turned on. The EH1output is turned on immediately. With continuing Emergen-cy Heat demand, EH2 will turn on after 5 minutes. Fan En-able and Fan Speed relays are turned off after a 60-seconddelay. The control reverts to Standby mode.
Output EH1, EH2, Fan Enable, and Fan Speed will beON if the G input is not active during Emergency Heatmode.COOLING STAGE 1 — In Cooling Stage 1 mode, the FanEnable, compressor and RV relays are turned on immediate-ly. If configured as stage 2 (DIP switch set to OFF) then thecompressor and fan will not turn on until there is a stage 2demand. The Fan Enable and compressor relays are turnedoff immediately when the Cooling Stage 1 demand is re-moved. The control reverts to Standby mode. The RV relayremains on until there is a heating demand. If there is a mas-ter/slave or dual compressor application, all compressor re-lays and related functions will track with their associatedDIP switch 2 on S1.COOLING STAGE 2 — In Cooling Stage 2 mode, the FanEnable, compressor and RV relays remain on. The FanSpeed relay is turned on immediately and turned off oncethe Cooling Stage 2 demand is removed. The control revertsto Cooling Stage 1 mode. If there is a master/slave or dualcompressor application, all compressor relays and relatedfunctions will track with their associated DIP switch 2 onS1.NIGHT LOW LIMIT (NLL) STAGED HEATING — InNLL staged Heating mode, the override (OVR) input be-comes active and is recognized as a call for heating and thecontrol will immediately go into a Heating Stage 1 mode.With an additional 30 minutes of NLL demand, the controlwill go into Heating Stage 2 mode. With another additional30 minutes of NLL demand, the control will go into HeatingStage 3 mode.
Units with WSHP Open Multiple Protocol —The WSHP Open multi-protocol controller will control me-chanical cooling, heating and waterside economizer outputsbased on its own space temperature input and set points. Anoptional CO2 IAQ (indoor air quality) sensor mounted in thespace can maximize the occupant comfort. The WSHP Opencontroller has its own hardware clock that is automatically setwhen the heat pump software is downloaded to the board. Oc-cupancy types are described in the scheduling section below.The following sections describe the functionality of the WSHPOpen multi-protocol controller. All point objects referred to inthis sequence of operation will be referenced to the objects asviewed in the BACview6 handheld user interface.SCHEDULING — Scheduling is used to start/stop the unitbased on a time period to control the space temperature to spec-ified occupied heating and cooling set points. The controller isdefaulted to control by occupied set points all the time, until ei-ther a time schedule is configured with BACview6, Field Assis-tant, i-Vu® Open, or a third party control system to enable/dis-able the BAS (Building Automation System) on/off point. Thelocal time and date must be set for these functions to operateproperly. The occupancy source can be changed to one of thefollowing:Occupancy Schedules — The controller will be occupied 24/7until a time schedule has been configured using either FieldAssistant, i-Vu Open, BACview6 or a third party control systemto enable/disable the BAS on/off point. The BAS point can bedisabled by going to Config, then Unit, then Occupancy
Schedules and changing the point from enable to disable thenclicking OK.NOTE: This point must be enabled in order for the i-Vu Open,Field Assistant, or BACview6 control system to assign a timeschedule to the controller.Schedule_schedule — The unit will operate according to theschedule configured and stored in the unit. The schedule isaccessible via the BACview6 Handheld tool, i-Vu Open, orField Assistant control system. The daily schedule consists of astart/stop time (standard or 24-hour mode) and seven days ofthe week, starting with Monday and ending on Sunday. Toenter a daily schedule, navigate to Config, then Sched, thenenter BACview6 Admin Password (1111), then go toschedule_schedule. From here, enter either a Weekly or Excep-tion schedule for the unit.Occupancy Input Contact — The WSHP Open controller hasthe capability to use an external dry contact closure to deter-mine the occupancy status of the unit. The Occupancy Sched-ules will need to be disabled in order to utilize the occupancycontact input. NOTE: Scheduling can only be controlled from one source.BAS (Building Automation System) On/Off — A BASsystem that supports network scheduling can control the unitthrough a network communication and the BAS schedulingfunction once the Occupancy Schedules have been disabled. NOTE: Scheduling can either be controlled via the unit or theBAS, but not both.INDOOR FAN — The indoor fan will operate in any one ofthree modes depending on the user configuration selected.
Fan mode can be selected as Auto, Continuous, or AlwaysOn. In Auto mode, the fan is in intermittent operation duringboth occupied and unoccupied periods. Continuous fan modeis intermittent during unoccupied periods and continuous dur-ing occupied periods. Always On mode operates the fan con-tinuously during both occupied and unoccupied periods. In thedefault mode, Continuous, the fan will be turned on wheneverany one of the following is true:• The unit is in occupied mode as determined by its occu-
pancy status.• There is a demand for cooling or heating in the unoccu-
pied mode.• There is a call for dehumidification (optional).
When power is reapplied after a power outage, there will bea configured time delay of 5 to 600 seconds before starting thefan. There are also configured fan delays for Fan On and FanOff. The Fan On delay defines the delay time (0 to 30 seconds;default 10) before the fan begins to operate after heating orcooling is started while the Fan Off delay defines the delaytime (0 to 180 seconds; default 45) the fan will continue to op-erate after heating or cooling is stopped. The fan will continueto run as long as the compressors, heating stages, or the dehu-midification relays are on. If the SPT failure alarm or conden-sate overflow alarm is active; the fan will be shut down imme-diately regardless of occupancy state or demand.Fan Speed Control (During Heating) — Whenever heat is re-quired and active, the control continuously monitors the sup-ply-air temperature to verify it does not rise above the config-ured maximum heating SAT limit (110 F default). As the SATapproaches this value, the control will increase the fan speed asrequired to ensure the SAT will remain within the limit. Thisfeature provides the most quiet and efficient operation by oper-ating the fan at the lowest speed possible.Fan Speed Control (During Cooling) — Whenever mechani-cal cooling is required and active, the control continuouslymonitors the supply-air temperature to verify it does not fall be-low the configured minimum cooling SAT limit (50 F default).As the SAT approaches this value, the control will increase thefan speed as required to ensure the SAT will remain within the
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limit. The fan will operate at lowest speed to maximize latentcapacity during cooling.COOLING — The WSHP Open controller will operate one ortwo stages of compression to maintain the desired cooling setpoint. The compressor outputs are controlled by the PI (propor-tional-integral) cooling loop and cooling stages capacity algo-rithm. They will be used to calculate the desired number ofstages needed to satisfy the space by comparing the space tem-perature (SPT) to the appropriate cooling set point. The waterside economizer, if applicable, will be used for first stage cool-ing in addition to the compressor(s). The following conditionsmust be true in order for the cooling algorithm to run:• Cooling is set to Enable.• Heating mode is not active and the compressor time
guard has expired.• Condensate overflow input is normal.• If occupied, the SPT is greater than the occupied cooling
set point.• Space temperature reading is valid.• If unoccupied, the SPT is greater than the unoccupied
cooling set point.• If economizer cooling is available and active and the
economizer alone is insufficient to provide enough cool-ing.
• OAT (if available) is greater than the cooling lockouttemperature.If all the above conditions are met, the compressors will be
energized as required, otherwise they will be deenergized. Ifcooling is active and should the SAT approach the minimumSAT limit, the fan will be indexed to the next higher speed.Should this be insufficient and if the SAT falls further (equal tothe minimum SAT limit), the fan will be indexed to the maxi-mum speed. If the SAT continues to fall 5° F below the mini-mum SAT limit, all cooling stages will be disabled.
During Cooling mode, the reversing valve output will beheld in the cooling position (either B or O type as configured)even after the compressor is stopped. The valve will not switchposition until the Heating mode is required.
The configuration screens contain the minimum SATparameter as well as cooling lockout based on outdoor-airtemperature (OAT) Both can be adjusted to meet variousspecifications.
There is a 5-minute off time for the compressor as well as a5-minute time delay when staging up to allow the SAT toachieve a stable temperature before energizing a second stageof capacity. Likewise, a 45-second delay is used when stagingdown.
After a compressor is staged off, it may be restarted againafter a normal time-guard period of 5 minutes and if thesupply-air temperature has increased above the minimumsupply-air temperature limit.
The WSHP Open controller provides a status input to moni-tor the compressor operation. The status is monitored to deter-mine if the compressor status matches the commanded state.This input is used to determine if a refrigerant safety switch orother safety device has tripped and caused the compressor tostop operating normally. If this should occur, an alarm will begenerated to indicate the faulted compressor condition.HEATING — The WSHP Open controller will operate one ortwo stages of compression to maintain the desired heating setpoint. The compressor outputs are controlled by the heating PI(proportional-integral) loop and heating stages capacity algo-rithm. They will be used to calculate the desired number ofstages needed to satisfy the space by comparing the space tem-perature (SPT) to the appropriate heating set point. The follow-ing conditions must be true in order for the heating algorithm torun:• Heating is set to Enable.
• Cooling mode is not active and the compressor timeguard has expired.
• Condensate overflow input is normal.• If occupied, the SPT is less than the occupied heating set
point.• Space temperature reading is valid.• If unoccupied, the SPT is less than the unoccupied heat-
ing set point.• OAT (if available) is less than the heating lockout
temperature.If all the above conditions are met, the heating outputs will
be energized as required, otherwise they will be deenergized. Ifthe heating is active and should the SAT approach the maxi-mum SAT limit, the fan will be indexed to the next higherspeed. Should this be insufficient, and the SAT rises furtherreaching the maximum heating SAT limit, the fan will beindexed to the maximum speed. If the SAT still continues torise 5 F above the maximum limit, all heating stages will bedisabled.
During Heating mode, the reversing valve output will beheld in the heating position (either B or O type as configured)even after the compressor is stopped. The valve will not switchposition until the Cooling mode is required.
The configuration screens contain the maximum SATparameter as well as heating lockout based on outdoor-airtemperature (OAT); both can be adjusted to meet variousspecifications.
There is a 5-minute off time for the compressor as well as a5-minute time delay when staging up to allow the SAT toachieve a stable temperature before energizing a second stageof capacity. Likewise, a 45-second delay is used when stagingdown.
After a compressor is staged off, it may be restarted againafter a normal time-guard period of 5 minutes and if the sup-ply-air temperature has fallen below the maximum supply airtemperature limit.
The WSHP Open controller provides a status input to moni-tor the compressor operation. The status is monitored to deter-mine if the compressor status matches the commanded state.This input is used to determine if a refrigerant safety switch orother safety device has tripped and caused the compressor tostop operating normally. If this should occur, an alarm will begenerated to indicate the faulted compressor condition. Also, ifauxiliary heat is available (see below), the auxiliary heat willoperate to replace the reverse cycle heating and maintain thespace temperature as required.AUXILIARY HEAT — The WSHP Open controller can con-trol a two-position, modulating water, or steam valve connect-ed to a coil on the discharge side of the unit and supplied by aboiler or a single-stage ducted electric heater in order to main-tain the desired heating set point. Should the compressor capac-ity be insufficient or a compressor failure occurs, the auxiliaryheat will be used. Unless the compressor fails, the auxiliaryheat will only operate to supplement the heat provided by thecompressor if the space temperature falls more than one degreebelow the desired heating set point (the amount is configu-rable). The heat will be controlled so the SAT will not exceedthe maximum heating SAT limit.Auxiliary Modulating Hot Water/Steam Heating Reheat— The control can modulate a hot water or steam valve con-nected to a coil on the discharge side of the unit and suppliedby a boiler in order to maintain the desired heating set pointshould the compressor capacity be insufficient or a compressorfailure occurs. Unless a compressor fault condition exists, thevalve will only operate to supplement heat provided by com-pressor if the space temperature falls more than one degree be-low the desired heating set point. The valve will be controlledso the SAT will not exceed maximum heating SAT limit.
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Two-Position Hot Water/Steam Heating Reheat — The con-trol can operate a two-position, NO or NC, hot water or steamvalve connected to a coil on the discharge side of the unit andsupplied by a boiler in order to maintain the desired heating setpoint should the compressor capacity be insufficient or a com-pressor failure occurs. Unless a compressor fault condition ex-ists, the valve will only open to supplement the heat providedby the compressor if the space temperature falls more than onedegree below the desired heating set point. The valve will becontrolled so the SAT will not exceed the maximum heatingSAT limit. The heat stage will also be subject to a 2-minuteminimum OFF time to prevent excessive valve cycling.Single Stage Electric Auxiliary Heat — The control can op-erate a field-installed single stage of electric heat installed onthe discharge side of the unit in order to maintain the desiredheating set point should the compressor capacity be insufficientor a compressor failure occurs. Unless a compressor fault con-dition exists, the heat stage will only operate to supplement theheat provided by the compressor if the space temperature fallsmore than one degree below the desired heating set point. Theheat stage will be controlled so the SAT will not exceed themaximum heating SAT limit. The heat stage will also besubject to a 2-minute minimum OFF time to prevent excessivecycling. INDOOR AIR QUALITY (IAQ) AND DEMAND CON-TROLLED VENTILATION (DCV) — If the optional in-door air quality sensor is installed, the WSHP Open controllercan maintain indoor air quality via a modulating OA damperproviding demand controlled ventilation. The control operatesthe modulating OA damper during occupied periods. The con-trol monitors the CO2 level and compares it to the configuredset points, adjusting the ventilation rate as required. The controlprovides proportional ventilation to meet the requirements ofASHRAE (American Society of Heating, Refrigerating andAir Conditioning Engineers) specifications by providing a baseventilation rate and then increasing the rate as the CO2 level in-creases. The control will begin to proportionally increase venti-lation when the CO2 level rises above the start ventilation setpoint and will reach the full ventilation rate when the CO2 levelis at or above the maximum set point. A user-configurableminimum damper position ensures that proper base ventilationis delivered when occupants are not present. The IAQconfigurations can be accessed through the configurationscreen. The following conditions must be true in order for thisalgorithm to run:• Damper control is configured for DCV.• The unit is in an occupied mode.• The IAQ sensor reading is greater than the DCV start
control set point.The control has four user adjustable set points: DCV start
control set point, DCV maximum control set point, minimumdamper position, and DCV maximum damper position.Two-Position OA Damper — The control can be configuredto operate a ventilation damper in a two-position ventilationmode to provide the minimum ventilation requirements duringoccupied periods.WATERSIDE ECONOMIZER — The WSHP Open control-ler has the capability of providing modulating or two-positionwater economizer operation (for a field-installed economizercoil mounted to the entering air side of the unit and connectedto the condenser water loop) in order to provide free cooling(or preheating) when water conditions are optimal. Water econ-omizer settings can be accessed through the equipment statusscreen. The following conditions must be true for economizeroperation:• SAT reading is available.• LWT reading is available.
• If occupied, the SPT is greater than the occupied coolingset point or less than the occupied heating set point andthe condenser water is suitable.
• Space temperature reading is valid.• If unoccupied, the SPT is greater than the unoccupied
cooling set point or less than the unoccupied heating setpoint and the condenser water is suitable.
Modulating Water Economizer Control — The control hasthe capability to modulate a water valve to control condenserwater flowing through a coil on the entering air side of the unit.Cooling — The purpose is to provide an economizer coolingfunction by using the water loop when the entering water looptemperature is suitable (at least 5° F below space temperature).If the water loop conditions are suitable, then the valve willmodulate open as required to maintain a supply-air temperaturethat meets the load conditions. Should the economizer coil ca-pacity alone be insufficient for a period greater than 5 minutes,or should a high humidity condition occur, then the compressorwill also be started to satisfy the load. Should the SAT ap-proach the minimum cooling SAT limit, the economizer valvewill modulate closed during compressor operation. Heating — Additionally, the control will modulate the watervalve should the entering water loop temperature be suitablefor heating (at least 5° F above space temperature) and heat isrequired. The valve will be controlled in a similar manner ex-cept to satisfy the heating requirement. Should the economizercoil capacity alone be insufficient to satisfy the space load con-ditions for more than 5 minutes, then the compressor will bestarted to satisfy the load. Should the SAT approach the maxi-mum heating SAT limit, the economizer valve will modulateclosed during compressor operation.Two-Position Water Economizer Control — The control hasthe capability to control a NO or NC, two-position water valveto control condenser water flow through a coil on the enteringair side of the unit. Cooling — The purpose is to provide a cooling economizerfunction directly from the condenser water loop when the en-tering water loop temperature is suitable (at least 5° F belowspace temperature). If the optional coil is provided and the wa-ter loop conditions are suitable, then the valve will open toprovide cooling to the space when required. Should thecapacity be insufficient for a period greater than 5 minutes, orshould a high humidity condition occur, then the compressorwill be started to satisfy the load. Should the SAT reach theminimum cooling SAT limit, the economizer valve will closeduring compressor operation.Heating — Additionally, the economizer control will open thewater valve should the entering water loop temperature be suit-able for heating (at least 5° F above space temperature) andheat is required. The valve will be controlled in a similar man-ner except to satisfy the heating requirement. Should the coilcapacity be insufficient to satisfy the space load for more than5 minutes, then the compressor will be started to satisfy theload. Should the SAT reach the maximum heating SAT limit,the economizer valve will close during compressor operation.DEMAND LIMIT — The WSHP Open controller has theability to accept three levels of demand limit from the network.In response to a demand limit, the unit will decrease its heatingset point and increase its cooling set point to widen the range inorder to immediately lower the electrical demand. The amountof temperature adjustment in response is user adjustable forboth heating and cooling and for each demand level. The re-sponse to a particular demand level may also be set to zero.CONDENSER WATER LINKAGE — The control pro-vides optimized water loop operation using an universal con-troller (UC) open loop controller. Loop pump operation is auto-matically controlled by WSHP equipment occupancy sched-ules, unoccupied demand and tenant override conditions.Positive pump status feedback prevents nuisance fault trips.
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The condenser water linkage operates when a request for con-denser water pump operation is sent from each WSHP to theloop controller. This request is generated whenever any WSHPis scheduled to be occupied, is starting during optimal start (forwarm-up or pull down prior to occupancy), there is an unoccu-pied heating or cooling demand, or a tenant pushbutton over-ride. At each WSHP, the water loop temperature and the looppump status is given. The WSHP will NOT start a compressoruntil the loop pumps are running or will shutdown the com-pressors should the pumps stop. This prevents the WSHP fromoperating without water flow and thus tripping out on refriger-ant pressure, causing a lockout condition. The WSHP Opencontroller control will prevent this from occurring. Also, theloop controller can be configured to start the pumps only after aconfigurable number of WSHPs are requesting operation (from1-"N"). This can be used to prevent starting the entire loop op-eration for only one WSHP. Meanwhile, the WSHPs will notoperate if the loop pump status is off and therefore the WSHPcompressor will not run.
SYSTEM TESTSystem testing provides the ability to check the control
operation. The control enters a 20-minute Test mode by mo-mentarily shorting the test pins. All time delays are in-creased 15 times.
Test Mode — To enter Test mode on Complete C or De-luxe D controls, cycle the fan 3 times within 60 seconds. TheLED (light-emitting diode) will flash a code representing thelast fault when entering the Test mode. The alarm relay willalso power on and off during Test mode. See Tables 13-15. Toexit Test mode, short the terminals for 3 seconds or cycle thepower 3 times within 60 seconds.NOTE: The Deluxe D control has a flashing code and alarmrelay cycling code that will both have the same numericallabel. For example, flashing code 1 will have an alarm relaycycling code 1. Code 1 indicates the control has not faultedsince the last power off to power on sequence.
Retry Mode — In Retry mode, the status LED will start toflash slowly to signal that the control is trying to recover froman input fault. The control will stage off the outputs and try toagain satisfy the thermostat used to terminal Y. Once the ther-mostat input calls are satisfied, the control will continue normaloperation. NOTE: If 3 consecutive faults occur without satisfying thethermostat input call to terminal Y, the control will go intolockout mode. The last fault causing the lockout is stored inmemory and can be viewed by entering Test mode.
Aquazone™ Deluxe D Control LED Indica-tors — There are 3 LED indicators on the Deluxe D control:STATUS LED — Status LED indicates the current status ormode of the Deluxe D control. The Status LED light is green.TEST LED — Test LED will be activated any time the De-luxe D control is in Test mode. The Test LED light is yellow.FAULT LED — Fault LED light is red. The fault LED willalways flash a code representing the last fault in memory. Ifthere is no fault in memory, the fault LED will flash code 1 onthe and appear as 1 fast flash alternating with a 10-secondpause. See Table 15.
WSHP Open Test Mode — To enter WSHP Open testmode, navigate from the BACview6 home screen to the
configuration screen. Choose the service screen and enableunit test. The controller will then test the following:FAN TEST — Tests all fan speeds, sequences fan from low tohigh, and operates each speed for one minute. Resets to disableon completion.COMPRESSOR TEST — Tests compressor cooling andheating operation. Sequences cooling stage 1 then coolingstage 2 followed by heating stage 2 then reduces capacity toheating stage 1. Operates for 1 minute per step.DEHUMIDIFICATION TEST — Tests dehumidificationmode. Operates for 2 minutes.AUXILIARY HEATING TEST — Tests auxiliary heat.Sequences fan on and enables heating coil for 1 minute.H2O ECONOMIZER TEST — Tests entering/returningwater loop economizer operation. Sequences fan and openseconomizer water valve for one minute.OPEN VENT DAMPER 100% TEST — Tests outside air(OA) damper operation.PREPOSITION OA DAMPER — Prepositions OA damperactuator to set proper preload.NOTE: The auxiliary heating test, H2O economizer test, openvent damper 100% test, and preposition OA damper featureswill not be visible on the screen unless configured.Once tests are complete, set unit test back to disable. Unit willautomatically reset to disable after 1 hour.
Table 13 — Complete C Control Current LED Status and Alarm Relay Operations
LEGEND
NOTES:1. Slow flash is 1 flash every 2 seconds.2. Fast flash is 2 flashes every 1 second.3. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed
by a 10-second pause. This sequence will repeat continually until thefault is cleared.
LED STATUS DESCRIPTION OF OPERATION ALARM RELAY
On
Normal Mode Open
Normal Mode withPM Warning
Cycle(closed 5 sec.,Open 25 sec.)
Off Complete C Control is non-functional Open
Slow Flash
Fault Retry Open
Over/Under Voltage ShutdownOpen
(Closed after15 minutes)
Fast Flash Lockout ClosedFlashing Code 1 Test Mode — No fault in memory Cycling Code 1Flashing Code 2 Test Mode — HP Fault in memory Cycling Code 2Flashing Code 3 Test Mode — LP Fault in memory Cycling Code 3Flashing Code 4 Test Mode — FP1 Fault in memory Cycling Code 4Flashing Code 5 Test Mode — FP2 Fault in memory Cycling Code 5Flashing Code 6 Test Mode — CO Fault in memory Cycling Code 6
Flashing Code 7 Test Mode — Over/Undershutdown in memory Cycling Code 7
Flashing Code 8 Test Mode — PM in memory Cycling Code 8
Flashing Code 9 Test Mode — FP1/FP2Swapped fault in memory Cycling Code 9
CO — Condensate OverflowFP — Freeze ProtectionHP — High PressureLED — Light-Emitting DiodeLP — Low PressurePM — Performance Monitor
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Table 14 — Complete C Control LED Code andFault Descriptions
LEGEND
Table 15 — Aquazone™ Deluxe D Control Current LED Status and Alarm Relay Operations
LEGEND NOTES:1. If there is no fault in memory, the Fault LED will flash code 1.2. Codes will be displayed with a 10-second Fault LED pause.3. Slow flash is 1 flash every 2 seconds.4. Fast flash is 2 flashes every 1 second.5. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes fol-
lowed by a 10-second pause. This sequence will repeat continuallyuntil the fault is cleared.
SERVICEPerform the procedures outlined below periodically, as
indicated.
LEDCODE FAULT DESCRIPTION
1 No fault in memory There has been no fault since the last power-down to power-up sequence2 High-Pressure Switch HP open instantly3 Low-Pressure Switch LP open for 30 continuous seconds before or during a call (bypassed for first 60 seconds)4 Freeze Protection Coax — FP1 FP1 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)5 Freeze Protection Air Coil — FP2 FP2 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)6 Condensate overflow Sense overflow (grounded) for 30 continuous seconds7
(Autoreset)Over/Under Voltage Shutdown "R" power supply is <19VAC or >30VAC
8 PM Warning Performance Monitor Warning has occurred.9 FP1 and FP2 Thermistors are swapped FP1 temperature is higher than FP2 in heating/test mode, or FP2 temperature is higher than FP1 in cooling/
test mode.
CO — Condensate OverflowFP — Freeze ProtectionHP — High PressureLED — Light-Emitting DiodeLP — Low PressurePM — Performance Monitor
DESCRIPTION STATUS LED(Green)
TEST LED(Yellow) FAULT LED (Red) ALARM RELAY
Normal Mode On Off Flash Last Fault Code in Memory Open
Normal Mode with PM On Off Flashing Code 8 Cycle (closed 5 sec,open 25 sec, …)
Deluxe D Control is non-functional Off Off Off Open
Test Mode — On Flash Last Fault Code in Memory Cycling Appropriate CodeNight Setback Flashing Code 2 — Flash Last Fault Code in Memory —
ESD Flashing Code 3 — Flash Last Fault Code in Memory —Invalid T-stat Inputs Flashing Code 4 — Flash Last Fault Code in Memory —No Fault in Memory On Off Flashing Code 1 Open
HP Fault Slow Flash Off Flashing Code 2 OpenLP Fault Slow Flash Off Flashing Code 3 OpenFP1 Fault Slow Flash Off Flashing Code 4 OpenFP2 Fault Slow Flash Off Flashing Code 5 OpenCO Fault Slow Flash Off Flashing Code 6 Open
Over/Under Voltage Slow Flash Off Flashing Code 7 Open (closed after 15 minutes)HP Lockout Fast Flash Off Flashing Code 2 ClosedLP Lockout Fast Flash Off Flashing Code 3 Closed
FP1 Lockout Fast Flash Off Flashing Code 4 ClosedFP2 Lockout Fast Flash Off Flashing Code 5 ClosedCO Lockout Fast Flash Off Flashing Code 6 Closed
CO — Condensate OverflowESD — Emergency ShutdownFP — Freeze ProtectionHP — High PressureLP — Low PressurePM — Performance Monitor
IMPORTANT: When a compressor is removed from thisunit, system refrigerant circuit oil will remain in the com-pressor. To avoid leakage of compressor oil, the refrigerantlines of the compressor must be sealed after it is removed.
IMPORTANT: All refrigerant discharged from this unitmust be recovered without exception. Technicians must fol-low industry accepted guidelines and all local, state and fed-eral statutes for the recovery and disposal of refrigerants.
IMPORTANT: To avoid the release of refrigerant into theatmosphere, the refrigerant circuit of this unit must only beserviced by technicians which meet local, state and federalproficiency requirements.
IMPORTANT: To prevent injury or death due to electricalshock or contact with moving parts, open unit disconnectswitch before servicing unit.
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Filters — Filters must be clean for maximum performance.Inspect filters every month under normal operating conditions.replace when necessary.
Washable, high efficiency, electrostatic filters, when dirty,can exhibit a very high pressure drop for the fan motor and re-duce air flow, resulting in poor performance. It is especially im-portant to provide consistent washing of these filters (in the op-posite direction of the normal air flow) once per month using ahigh pressure wash.
Water Coil — Keep all air out of the water coil. Checkopen loop systems to be sure the well head is not allowing airto infiltrate the water line. Always keep lines airtight.DIRECT GROUND WATER APPLICATIONS — If thesystem is installed in an area with a known high mineral con-tent (125 ppm or greater) in the water, it is best to establish aperiodic maintenance schedule with the owner so the coil canbe checked regularly.
Should periodic coil cleaning be necessary, use standardcoil cleaning procedures, which are compatible with the heatexchanger material and copper water lines. Generally, the morewater flowing through the unit, the less chance for scaling.Therefore, 1.5 gpm per ton is recommended as a minimumflow. Minimum flow rate for entering water temperatures be-low 50 F is 2.0 gpm per ton.ALL OTHER WATER LOOP APPLICATIONS — Gener-ally, water coil maintenance is not needed for closed loop sys-tems. However, if the piping is known to have high dirt or de-bris content, it is best to establish a periodic maintenanceschedule with the owner so the water coil can be checked regu-larly. Dirty installations are typically the result of deteriorationof iron or galvanized piping or components in the system.Open cooling towers requiring heavy chemical treatment andmineral buildup through water use can also contribute to highermaintenance. Should periodic coil cleaning be necessary, usestandard coil cleaning procedures, which are compatible withboth the heat exchanger material and copper water lines. Gen-erally, the more water flowing through the unit, the less chancefor scaling. However, flow rates over 3 gpm per ton can pro-duce water (or debris) velocities that can erode the heat ex-changer wall and ultimately produce leaks.
Condensate Drain Pans — Check condensate drainpans for algae growth twice a year. If algae growth is apparent,consult a water treatment specialist for proper chemical treat-ment. The application of an algaecide every three months willtypically eliminate algae problems in most locations.
Refrigerant System — Verify air and water flow ratesare at proper levels before servicing. To maintain sealed circuit-ry integrity, do not install service gages unless unit operationappears abnormal.
Condensate Drain Cleaning — Clean the drain lineand unit drain pan at the start of each cooling season. Checkflow by pouring water into drain. Be sure trap is filled to main-tain an air seal.
Air Coil Cleaning — Remove dirt and debris from evap-orator coil as required by condition of the coil. Clean coil witha stiff brush, vacuum cleaner, or compressed air. Use a fin
comb of the correct tooth spacing when straightening mashedor bent coil fins.
Condenser Cleaning — Water-cooled condensers mayrequire cleaning of scale (water deposits) due to improperlymaintained closed-loop water systems. Sludge build-up mayneed to be cleaned in an open water tower system due toinduced contaminants.
Local water conditions may cause excessive fouling orpitting of tubes. Condenser tubes should therefore be cleaned atleast once a year, or more often if the water is contaminated.
Proper water treatment can minimize tube fouling andpitting. If such conditions are anticipated, water treatmentanalysis is recommended. Refer to the Carrier System DesignManual, Part 5, for general water conditioning information.
Clean condensers with an inhibited hydrochloric acid solu-tion. The acid can stain hands and clothing, damage concrete,and, without inhibitor, damage steel. Cover surroundings toguard against splashing. Vapors from vent pipe are not harmful,but take care to prevent liquid from being carried over by thegases.
Warm solution acts faster, but cold solution is just as effec-tive if applied for a longer period.GRAVITY FLOW METHOD — Do not add solution fasterthan vent can exhaust the generated gases.
When condenser is full, allow solution to remain overnight,then drain condenser and flush with clean water. Follow acidmanufacturer’s instructions. See Fig. 28.FORCED CIRCULATION METHOD — Fully open ventpipe when filling condenser. The vent may be closed whencondenser is full and pump is operating. See Fig. 29.
Regulate flow to condenser with a supply line valve. Ifpump is a nonoverloading type, the valve may be fully closedwhile pump is running.
IMPORTANT: Units should never be operated with-out a filter.
IMPORTANT: To avoid fouled machinery and extensiveunit clean-up, DO NOT operate units without filters inplace. DO NOT use equipment as a temporary heat sourceduring construction.
CAUTION
Follow all safety codes. Wear safety glasses and rubbergloves when using inhibited hydrochloric acid solution.Observe and follow acid manufacturer’s instructions. Fail-ure to follow these safety precautions could result in per-sonal injury or equipment or property damage.
FILL CONDENSER WITHCLEANING SOLUTION. DONOT ADD SOLUTIONMORE RAPIDLY THANVENT CAN EXHAUSTGASES CAUSED BYCHEMICAL ACTION.
PAIL
FUNNEL
CONDENSER
PAIL
3’ TO 4’
VENTPIPE 5’ APPROX
1”PIPE
Fig. 28 — Gravity Flow Method
37
For average scale deposit, allow solution to remain in con-denser overnight. For heavy scale deposit, allow 24 hours.Drain condenser and flush with clean water. Follow acid manu-facturer’s instructions.
Compressor — Conduct annual amperage checks to in-sure that amp draw is no more than 10% greater than indicatedon the serial plate data.
Fan Motors — All units have lubricated fan motors. Fanmotors should never be lubricated unless obvious, dry opera-tion is suspected. Periodic maintenance oiling is not recom-mended, as it will result in dirt accumulating in the excess oiland cause eventual motor failure. Conduct annual dry opera-tion check and amperage check to ensure amp draw is no morethan 10% greater than indicated on serial plate data.
Belt — Check that the belt is tight. Retighten if needed. Re-place if it is split or cracked.
Air Coil — The air coil must be cleaned to obtain maximumperformance. Check once a year under normal operating condi-tions and, if dirty, brush or vacuum clean. Care must be takennot to damage the aluminum fins while cleaning.
Checking System Charge — Units are shipped withfull operating charge. If recharging is necessary:
1. Insert thermometer bulb in insulating rubber sleeve onliquid line near filter drier. Use a digital thermometer forall temperature measurements. DO NOT use a mercuryor dial-type thermometer.
2. Connect pressure gage to discharge line near compressor.3. After unit conditions have stabilized, read head pressure
on discharge line gage.NOTE: Operate unit a minimum of 15 minutes beforechecking charge.
4. From standard field-supplied Pressure-Temperature chartfor R-410A, find equivalent saturated condensingtemperature.
5. Read liquid line temperature on thermometer; thensubtract from saturated condensing temperature. The dif-ference equals subcooling temperature.
Refrigerant Charging
NOTE: Do not vent or depressurize unit refrigerant to atmo-sphere. Remove and recover refrigerant following acceptedpractices.
Air Coil Fan Motor Removal
Motor power wires need to be disconnected from motorterminals before motor is removed from unit.
1. Shut off unit main power supply.2. Loosen bolts on mounting bracket so that fan belt can be
removed.3. Loosen and remove the 2 motor mounting bracket bolts
on left side of bracket.4. Slide motor/bracket assembly to extreme right and lift out
through space between fan scroll and side frame. Restmotor on a high platform such as a step ladder. Do notallow motor to hang by its power wires.
Blower Fan Sheaves — Factory-supplied drives arepre-aligned and tensioned, however, it is recommended that thebelt tension and alignment be checked before starting the unit.Always check the drive alignment after adjusting belt tension.Sheave and belt information is shown in Table 16.
Each factory-assembled fan, shaft, and drive sheave assem-bly is precision aligned and balanced. If excessive unitvibration occurs after field replacement of sheaves, the unitshould be rebalanced. To change the drive ratio, follow thesteps in the Blower Fan Performance Adjustment section.
After 1 to 3 minutes of operation, check the belt tension.Also check tension frequently during the first 24 hours of oper-ation and adjust if necessary. Periodically check belt tensionthroughout the run-in period, which is normally the initial72 hours of operation.ALIGNMENT — Make sure that fan shafts and motor shaftsare parallel and level. The most common causes of misalign-ment are nonparallel shafts and improperly located sheaves.Where shafts are not parallel, belts on one side are drawn tight-er and pull more than their share of the load. As a result, thesebelts wear out faster, requiring the entire set to be replaced be-fore it has given maximum service. If misalignment is in thesheave, belts enter and leave the grooves at an angle, causingexcessive belt and sheave wear.Shaft Alignment — Check shaft alignment by measuring thedistance between the shafts at 3 or more locations. If the dis-tances are equal, then the shafts are parallel.Sheave Alignment
1. To check the location of the fixed sheaves on the shafts,use a straightedge or a piece of string. If the sheaves areproperly aligned, the string will touch them at the pointsindicated by the arrows in Fig. 30. Rotate each sheave ahalf revolution to determine whether the sheave is wob-bly or the drive shaft is bent. Correct any misalignment.
2. With sheaves aligned, tighten cap screws evenly andprogressively.
SUCTION
PUMPSUPPORT
TANK
FINE MESHSCREEN
RETURN
GAS VENTPUMP PRIMINGCONN.
GLOBEVALVES
SUPPLY
1” PIPE
CONDENSER
REMOVE WATERREGULATING VALVE
Fig. 29 — Forced Circulation Method
WARNING
To prevent personal injury, wear safety glasses and gloveswhen handling refrigerant. Do not overcharge system —this can cause compressor flooding.
CAUTION
Before attempting to remove fan motors or motor mounts,place a piece of plywood over evaporator coils to preventcoil damage.
38
NOTE: There should be a 1/8-in. to 1/4-in. gap betweenthe mating part hub and the bushing flange. If the gap isclosed, the bushing is probably the wrong size.
3. With taper-lock bushed hubs, be sure the bushing boltsare tightened evenly to prevent side-to-side pulley wob-ble. Check by rotating sheaves and rechecking sheavealignment. When substituting field-supplied sheaves forfactory-supplied sheaves, only the motor sheave shouldbe changed.
Blower Fan Performance Adjustment — Theunit is supplied with variable sheave drive on the fan motor toadjust for differing airflows at various ESP conditions. Selectan airflow requirement on the left side of the table, then movehorizontally to right under the required ESP for the sheaveturns open, rpm and horsepower for that condition. Fullyclosed, the sheave will produce the highest static capability(higher rpm).
To change fan speeds from factory settings:1. Shut off unit power supply.2. Remove belt from motor sheave.3. Lift motor assembly.
4. Loosen the 5/16-in. hex nuts on the grommet motor adjust-ment bolts (2 per bolt). To increase the belt tension loosenthe top hex nut. To decrease the belt tension loosen thebottom hex nut.
5. Turn the bolts by hand to the desired position then tightenthe 5/16-in. hex nuts ( 2 per bolt).
6. Lower the motor assembly.7. Install the belt. 8. Tension the belt per section below.9. Restore power to the unit.
BELT TENSION ADJUSTMENT — Using a gage, apply4 lb of force to the center of the belt and adjust the tension untila deflection of 1/64-in. is achieved for every inch of shaft centerdistance. See Fig. 31.
Ideal belt tension is the lowest value under which belt slipwill not occur at peak load conditions.
Replacing the WSHP Open Controller’s Bat-tery — The WSHP Open controller’s 10-year lithiumCR2032 battery provides a minimum of 10,000 hours of dataretention during power outages.NOTE: Power must be ON to the WSHP Open controllerwhen replacing the battery, or the date, time and trend data willbe lost.
1. Remove the battery from the controller, making note ofthe battery's polarity.
2. Insert the new battery, matching the battery's polaritywith the polarity indicated on the WSHP Open controller.
Table 16 — Blower Sheave and Belt Specifications
Fig. 30 — Sheave Alignment
a50-7135tf
BELT SPAN
LB FORCE
DEFLECTION
Fig. 31 — Fan Belt Tension
a50-7136ef
UNIT SIZE 50HQP COMPONENT
DRIVE PACKAGEA B C D E
072
BLOWER SHEAVE BK67 X 1 BK85 X 1 BK67 X 1 BK67 X 1 BK67 X 1MOTOR SHEAVE 1VP34 X 7/8 1VP34 X 7/8 1VP44 X 7/8 1VP34 X 7/8 1VP44 X 7/8
MOTOR HP 1 1 1 2 2BELT B X 46 B X 50 B X 48 B X 46 B X 48
096
BLOWER SHEAVE BK67 X 1 BK77 X 1 BK62 X 1 BK67 X 1 BK62 X 1MOTOR SHEAVE 1VP40 X 7/8 1VP34 X 7/8 1VP44 X 7/8 1VP40 X 7/8 1VP44 X 7/8
MOTOR HP 2 2 2 3 3BELT B X 46 B X 48 B X 46 B X 46 B X 46
120
BLOWER SHEAVE BK67 X 1 BK67 X 1 BK67 X 1 BK67 X 1 BK67 X 1MOTOR SHEAVE 1VP44 X 7/8 1VP34 X 7/8 1VP50 X 7/8 1VP44 X 1-1/8 1VP50 X 1-1/8
MOTOR HP 3 3 3 5 5BELT B X 48 B X 46 B X 48 B X 50 B X 51
39
TROUBLESHOOTINGWhen troubleshooting problems with a WSHP, see
Table 17.
Thermistor — A thermistor may be required for single-phase units where starting the unit is a problem due to lowvoltage. See Fig. 32 for thermistor nominal resistance.
Control Sensors — The control system employs 2 nom-inal 10,000 ohm thermistors (FP1 and FP2) that are used forfreeze protection. Be sure FP1 is located in the discharge fluidand FP2 is located in the air discharge. See Fig. 33.
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0
Temperature (degF)
Res
ista
nce
(kO
hm)
Fig. 32 — Thermistor Nominal Resistance
a50-8163
SUCTION
COMPRESSOR
DISCHARGECOAXEXPANSIONVALVE
FP2 FP1
LIQUIDLINE WATER IN WATER OUT
CONDENSATEOVERFLOW
(CO)
AIR COILFREEZEPROTECTION
WATERCOILPROTECTION
THERMISTOR
(°F) (°F)
AIRCOILAIRFLOW AIRFLOW
LEGEND
Fig. 33 — FP1 and FP2 Thermistor Location
COAX — Coaxial Heat ExchangerAirflowRefrigerant Liquid Line Flow
40
Table 17 — Troubleshooting
LEGEND
FAULT HEATING COOLING POSSIBLE CAUSE SOLUTIONMain Power Problems X X Green Status LED Off Check line voltage circuit breaker and disconnect.
Check for line voltage between L1 and L2 on the contactor.Check for 24 VAC between R and C on controller.Check primary/secondary voltage on transformer.
HP Fault — Code 2High Pressure
X Reduced or no water flow in cooling
Check pump operation or valve operation/setting.Check water flow adjust to proper flow rate.
X Water temperature out of range in cooling
Bring water temperature within design parameters.
X Reduced or no airflow in heating
Check for dirty air filter and clean or replace.Check fan motor operation and airflow restrictions.Dirty air coil — construction dust etc.Too high external static. Check Tables 5-7.
X Air temperature out of range in heating
Bring return air temperature within design parameters.
X X Overcharged with refrigerant Check superheat/subcooling vs typical operating condition.X X Bad HP switch Check switch continuity and operation. Replace.
LP/LOC Fault — Code 3Low Pressure/Loss of Charge
X X Insufficient charge Check for refrigerant leaks.X Compressor pump down at
start-upCheck charge and start-up water flow.
FP1 Fault — Code 4Water Freeze Protection
X Reduced or no water flow in heating
Check pump operation or water valve operation/setting.Plugged strainer or filter. Clean or replace.Check water flow adjust to proper flow rate.
X Inadequate antifreeze level Check antifreeze density with hydrometer.X Improper freeze protect set-
ting (30F vs 10F)Clip JW2 jumper for antifreeze (10F) use.
X Water temperature out of range
Bring water temperature within design parameters.
X X Bad thermistor Check temperature and impedance correlation.FP2 Fault — Code 5Air Coil FreezeProtection
X Reduced or no airflow in cooling
Check for dirty air filter and clean or replace.Check fan motor operation and airflow restrictions.Too high external static. Check Tables 5-7.
X Air temperature out of range Too much cold vent air. Bring entering air temperature within designparameters.
X Improper freeze protect set-ting (30F vs 10F)
Normal airside applications will require 30F only.
X X Bad thermistor Check temperature and impedance correlation.Condensate Fault —Code 6
X X Blocked drain Check for blockage and clean drain.X X Improper trap Check trap dimensions and location ahead of vent.
X Poor drainage Check for piping slope away from unit.Check slope of unit toward outlet.Poor venting. Check vent location.
X Moisture on sensor Check for moisture shorting to air coil.Over/Under Voltage —Code 7(Auto Resetting)
X X Under voltage Check power supply and 24 VAC voltage before and during operation.Check power supply wire size.Check compressor starting.Check 24 VAC and unit transformer tap for correct power supply voltage.
X X Over voltage Check power supply voltage and 24 VAC before and during operation.Check 24 VAC and unit transformer tap for correct power supply voltage.
Performance Monitor —Code 8
X Heating mode FP2>125F Check for poor airflow or overcharged unit.X Cooling mode FP1>125F
OR FP2< 40FCheck for poor water flow or airflow.
No Fault Code Shown X X No compressor operation See Scroll Compressor Rotation section.X X Compressor overload Check and replace if necessary.X X Control board Reset power and check operation.
Unit Short Cycles X X Dirty air filter Check and clean air filter.X X Unit in 'Test Mode' Reset power or wait 20 minutes for auto exit.X X Unit selection Unit may be oversized for space. Check sizing for actual load of space.X X Compressor overload Check and replace if necessary.
Only Fan Runs X X Thermostat position Ensure thermostat set for heating or cooling operation.X X Unit locked out Check for lockout codes. Reset power.X X Compressor overload Check compressor overload. Replace if necessary.X X Thermostat wiring Check Y and W wiring at heat pump. Jumper Y and R for compressor
operation in Test mode.
ECM — Electronically Commutated MotorFP — Freeze ProtectionHP — High PressureLED — Light Emitting DiodeLP/LOC — Low Pressure/Loss of ChargeRV — Reversing Valve
41
Table 17 — Troubleshooting (cont)
LEGEND
FAULT HEATING COOLING POSSIBLE CAUSE SOLUTIONOnly Compressor Runs X X Thermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation.
X X Fan motor relay Jumper G and R for fan operation. Check for line voltage across BR contacts.Check fan power enable relay operation (if present).
X X Fan motor Check for line voltage at motor. Check capacitor.X X Thermostat wiring Check Y and W wiring at heat pump. Jumper Y and R for compressor
operation in test mode.Unit Does Not Operate in Cooling
X Reversing valve Set for cooling demand and check 24 VAC on RV coil and at control.If RV is stuck, run high pressure up by reducing water flow and while operating engage and disengage RV coil voltage to push valve.
X Thermostat setup Check for 'O' RV setup not 'B'.X Thermostat wiring Check O wiring at heat pump. Jumper O and R for RV coil.
Insufficient Capacity/Not Cooling or Heating Properly
X X Dirty filter Replace or clean.X Reduced or no airflow in
heatingCheck for dirty air filter and clean or replace.Check fan motor operation and airflow restrictions.Too high external static. Check blower Tables 5-7.
X Reduced or no airflow in cooling
Check for dirty air filter and clean or replace.Check fan motor operation and airflow restrictions.Too high external static. Check blower Tables 5-7.
X X Leaky duct work Check supply and return air temperatures at the unit and at distant duct registers if significantly different, duct leaks are present.
X X Low refrigerant charge Check superheat and subcooling.X X Restricted metering device Check superheat and subcooling. Replace.
X Defective reversing valve Perform RV touch test.X X Thermostat improperly
locatedCheck location and for air drafts behind thermostat.
X X Unit undersized Recheck loads and sizing check sensible cooling load and heat pump capacity.
X X Scaling in water heat exchanger
Perform scaling check and clean if necessary.
X X Inlet water too hot or cold Check load, loop sizing, loop backfill, ground moisture.High Head Pressure X Reduced or no airflow in
heatingCheck for dirty air filter and clean or replace.Check fan motor operation and airflow restrictions.Too high external static. Check blower Tables 5-7.
X Reduced or no water flow in cooling
Check pump operation or valve operation/setting.Check water flow adjust to proper flow rate.
X Inlet water too hot Check load, loop sizing, loop backfill, ground moisture.X Air temperature out of range
in heatingBring return-air temperature within design parameters.
X Scaling in water heat exchanger
Perform scaling check and clean if necessary.
X X Unit overcharged Check superheat and subcooling. Reweigh in charge.X X Non-condensables in
systemEvacuate refrigerant, re-charge the system, and then weigh the new refrigerant charge.
X X Restricted metering device Check superheat and subcooling. Replace.Low Suction Pressure X Reduced water flow in
heatingCheck pump operation or water valve operation/setting.Plugged strainer or filter. Clean or replace.Check water flow adjust to proper flow rate.
X Water temperature out of range
Bring water temperature within design parameters.
X Reduced airflow in cooling Check for dirty air filter and clean or replace.Check fan motor operation and airflow restrictions.Too high external static. Check blower Tables 5-7.
X Air temperature out of range Too much cold vent air. Bring entering air temperature within design parameters.
X X Insufficient charge Check for refrigerant leaks.
Low Discharge Air Temperature in Heating
X Too high airflow Check blower Tables 5-7.X Poor performance See 'Insufficient Capacity'.
High Humidity X Too high airflow Check blower Tables 5-7.X Unit oversized Recheck loads and sizing check sensible cooling load and heat pump
capacity.
ECM — Electronically Commutated MotorFP — Freeze ProtectionHP — High PressureLED — Light Emitting DiodeLP/LOC — Low Pressure/Loss of ChargeRV — Reversing Valve
42
APPENDIX A — WSHP OPEN SCREEN CONFIGURATION
LEGEND
SCREEN NAME PASSWORD LEVEL POINT NAME EDITABLE RANGE DEFAULT NOTES
EquipmentStatus
No Password Required
Operating ModeOff, Fan Only, Economize,
Cooling, Heating, Cont Fan, Test, Start Delay, Dehumidify
Displays unit operating mode
SPT F Displays SPTSAT F Displays SAT
Condenser LeavingTemperature F Displays leaving condenser
water temperature
Condenser Entering Temperature F
Displays entering condenserwater temperature (Value
will not update when compressoris operating)
FanOff/Low Speed/Medium SpeedHigh Speed/On
Displays fan speed status
Compressor Capacity 0 - 100% Displays compressor capacity
Damper Position 0 - 100%Displays current damper position(Viewable only if Ventilation DMP
Type = 2 position or DCV)H2O Economizer 0 - 100% Displays position of economizer valve
Auxiliary Heat 0 - 100%
Displays position of auxiliaryreheat valve (Viewable only if LeavingAir Auxiliary Heat Type = 2 position,
1 stage Elect or Modulating)
Space RH 0 - 100% Displays space RH% (Viewable only if Humidity Sensor = Installed)
Dehumidification Inactive/ActiveDisplays if dehumidification is active
(Viewable only if FactoryDehumidification Reheat = Installed)
IAQ CO2 0 - 9999 ppm Displays the space CO2 level
Alarm Status No Password Required
SPT Alarm Status Normal/Alarm Displays current spacetemperature condition
Alarming SPT FDisplays the SPT that
exceeded the alarm limit (when SPT alarm above is in Alarm)
SPT Alarm Limit FDisplays the SPT alarm limit that was
exceeded; causing the alarm condition (when SPT alarm above is in Alarm)
SPT Sensor AlarmStatus Normal/Alarm
Displays the status of the RnetSPT sensor - ALARM is displayed
should the sensor fail to communicate with the control module
IAQ Alarm Status Normal/Alarm Current IAQ/ventilation conditionCompressor Alarm
Status Normal/Alarm Current compressor condition
SAT Alarm Status Normal/Alarm Current SAT conditionCondensate Overflow
Alarm Status Normal/Alarm Current status of the condensatedrain (overflow switch)
Condenser Water Tem-perature Alarm Status Normal/Alarm Current status of the
condenser waterFilter Alarm Status Normal/Alarm Current filter condition
Space RH Alarm Status Normal/Alarm Current space RH condition
OAT Alarm Status Normal/Alarm Current status of the OATbroadcast function
Airside Linkage Status Normal/Alarm Current linkage status if enabledCondenser Water
Linkage Normal/Alarm Current linkage status if enabled
SensorCalibration
Admin Password level access only
SAT F Display SATSAT Offset X -9.9 - 10.0 F 0 F Used to correct sensor reading
Leaving CondenserWater Temperature F Displays Leaving Condenser
Water TemperatureLeaving CW Offset X -9.9 - 10.0 F 0 F Used to correct sensor reading
Rnet SensorTemperature F Displays SPT
Rnet Offset X -9.9 - 10.0 F 0 F Used to correct sensor readingRH % Displays Space RH value
RH Sensor Offset X -15% - 15% 0 % Used to correct sensor reading
BAS — Building Automation SystemDCV — Demand Controlled VentilationECM — Electronically Commutated MotorIAQ — Indoor Air QualityOAT — Outdoor Air TemperatureRH — Relative HumiditySAT — Supply Air TemperatureSPT — Space TemperatureTPI — Third Party Integration
43
APPENDIX A — WSHP OPEN SCREEN CONFIGURATION (cont)
LEGEND
SCREEN NAME PASSWORD LEVEL POINT NAME EDITABLE RANGE DEFAULT NOTES
UnitMaintenance
No Password required
Operating ModeOff, Fan Only,Economize,
Cooling, Heating, Cont Fan, Test, Start Delay, Dehumidify
Displays unit operating mode
Fan Operating Mode Auto/Continuous/Always On Displays how the fan is configuredto operate
Occupancy Status Unoccupied/Occupied Displays the current occupancy status
Occupancy Control
Always Occupied/Local Schedule/BACnet Schedule/BAS Keypad/
Occupied Contact/Holiday Schedule/Override Schedule/Pushbutton
Override/Unoccupied None
Displays the origin of theoccupancy control
Outside AirTemperature F Displays OAT (Viewable only if OAT
is a network broadcast)SPT F Displays SPT
SPT Status Normal/Above Limit/BelowLimit/Sensor Failure Displays the SPT status
SPT Sensor Status Inactive/Connected Displays the connection statusof the Rnet sensor
Condensate Overflow Normal/Alarm Displays the status of thecondensate overflow
Cooling Set Point F Displays the actual set pointbeing used for cooling control
Heating Set Point F Displays the actual set pointbeing used for heating control
Set Point Adjustment FDisplays the offset values from the Rnet user set point adjustment that is being
applied to the configured set pointsAuxiliary Heat Control
Set Point F Displays the calculated set point being used for auxiliary heating control
H2O EconomizerControl Set Point F Displays the calculated set point being
used for economizer controlCalculated IAQ/
Ventilation Damper position
% Displays the ventilation damperposition calculated by the DCV control
Active Compressor Stages 0/1/2 Displays the actual number of
compressor stages operatingSAT F Displays SAT
Reset Filter Alarm X No/Yes Used to reset the filter alarm timer after the filter has been cleaned or replaced
Overflow Contact Closed/Open Displays the state of the condensateoverflow switch contact
Occupancy Contact Closed/Open Displays the state of the external/remote occupancy input switch contact
BAS/Keypad Override X Inactive/Occupied/Unoccupied Inactive
Provides capability to force theequipment to operate in an
occupied or unoccupied mode
OAT Input N/A / Network Displays if an OAT value is beingreceived from the Network
System Settings
BACnet X See TPIKeypad Configuration X Mapping
Password X Changes passwordNetwork X See TPI
BACnet Time Master X See TPIClock Set X Changes clock/time setting
Occupancy Maintenance
No Password required
Override Schedules Inactive/Active Occupied
Used to display the active andinactive occupancy control inputs
Pushbutton Override Inactive/Active Occupied
Keypad Override Inactive/Active Occupied/Active Unoccupied
Schedules Inactive/Active OccupiedOccupancy Contact Inactive/Active Occupied
BAS on/off Inactive/Active Occupied
Schedule Configuration
User/AdminPassword level
access
Local Occupancy Schedules X Disable/Enable Enable
Used to define which occupancy inputs are used to determine
occupancy mode.
Local HolidaySchedules X Disable/Enable Disable
Local OverrideSchedules X Disable/Enable Disable
BACnet Occupancy Schedules X Disable/Enable Disable
BAS — Building Automation SystemDCV — Demand Controlled VentilationECM — Electronically Commutated MotorIAQ — Indoor Air QualityOAT — Outdoor Air TemperatureRH — Relative HumiditySAT — Supply Air TemperatureSPT — Space TemperatureTPI — Third Party Integration
44
APPENDIX A — WSHP OPEN SCREEN CONFIGURATION (cont)
LEGEND
SCREEN NAME PASSWORDLEVEL POINT NAME EDITABLE RANGE DEFAULT NOTES
Configuration
Set Points
User/AdminPassword level
access
Occupied Heating X 40 - 90 F 72 F Defines the OccupiedHeating Set Point
Occupied Cooling X 55 - 99 F 76 F Defines the OccupiedCooling Set Point
Unoccupied Heating X 40 - 90 F 55 F Defines the UnoccupiedHeating Set Point
Unoccupied Cooling X 55 - 99 F 90 F Defines the UnoccupiedCooling Set Point
Effective HeatingSet Point X 0 - 10 F Takes into effect bias (maximum
allowable set point deviation)Effective Cooling
Set Point X 0 - 10 F Takes into effect bias (maximumallowable set point deviation)
Optimal StartUses historical data to calculate
ramp up time so as to be at set point at occupied/unoccupied time
Occupied RHSet Point X 0 - 100% 65%
Defines the control set point usedduring occupied periods (Viewable only if Humidity Sensor = Installed/
Determines when to startDehumidification when occupied)
Unoccupied RHSet Point X 0 - 100% 90%
Defines the control set point usedduring unoccupied periods
(Viewable only if Humidity Sensor = Installed/Determines when to start
Dehumidification when unoccupied)
DCV CTRL StartSet Point X 0 - 9999 ppm 500 ppm
Defines the control set point used tostart increasing ventilation duringoccupied periods (Viewable only if
Ventilation DMP Type = DCV)
DCV Max CTRLSet Point X 0 - 9999 ppm 1050 ppm
Defines the control set pointused to define where the ventilation will reach its maximum limit during occupied periods (Viewable only ifVentilation DMP Type = DCV/Usedto determine DCV ending control
point)
Configuration
Schedule
Weekly Schedule
User/AdminPassword level
access
Start Time X 00:00 - 23:59 06:00 Defines the start time for anoccupied period
End Time X 00:00 - 24:00 18:00 Defines the ending time of anoccupied period
Mon X No/Yes Yes Determines if this day is includedin this schedule
Tue X No/Yes Yes Determines if this day is includedin this schedule
Wed X No/Yes Yes Determines if this day is includedin this schedule
Thur X No/Yes Yes Determines if this day is includedin this schedule
Fri X No/Yes Yes Determines if this day is includedin this schedule
Sat X No/Yes No Determines if this day is includedin this schedule
Sun X No/Yes No Determines if this day is includedin this schedule
Configuration
Schedule
Exception Schedules 1 - 12
User/AdminPassword level
access
Start Month X 0 - 12 0 Defines the start month of thishoilday schedule
Start Day X 0 - 31 0 Defines the start day of this holiday schedule
Start Time X 00:00 - 23:59 0:00 Determines the start time for this schedule
End Month X 0 - 12 0 Defines the month to end thishoilday schedule
End Day X 0 - 31 0 Defines the day to end this holiday schedule
End Time X 00:00 - 24:00 0:00 Determines the time to end this schedule
BAS — Building Automation SystemDCV — Demand Controlled VentilationECM — Electronically Commutated MotorIAQ — Indoor Air QualityOAT — Outdoor Air TemperatureRH — Relative HumiditySAT — Supply Air TemperatureSPT — Space TemperatureTPI — Third Party Integration
45
APPENDIX A — WSHP SCREEN OPEN CONFIGURATION (cont)
LEGEND
SCREEN NAME PASSWORD LEVEL POINT NAME EDITABLE RANGE DEFAULT NOTES
Configuration
UnitConfiguration
Admin Password level access only
Fan Mode X Auto/Continuous/Always On Continuous
Auto= Intermittant operation during bothoccupied and unoccupied periods/
Continuous = Intermittant during unoccupied periods and continuous during occupied
periods/Always on = fan operatescontinuously during both occupied and
unoccupied periods
Fan On Delay X 0 - 30 sec 10 sec Defines the delay time before the fan begins to operate after heating or cooling is started
Fan Off Delay X 0 - 180 sec 45 secDefines the amount of time the fan will
continue to operate after heating orcooling is stopped
Heating Enable X Disable/Enable Enable Provides capability to manuallydisable heating operation
Cooling Enable X Disable/Enable Enable Provides capability to manuallydisable cooling operation
Minimum SAT inCooling X 40 - 60 F 50 F Defines the minimum acceptable operating
temperature for the Supply Air Maximum SAT in
Heating X 80 - 140 F 110 F Defines the maximum acceptable operating temperature for the Supply Air
Damper Ventilation Position X 0 - 100% 100%
Normally set to 100% if 2 position dampertype or set to minimum ventilation position if
damper type = DCV DCV Maximum Vent
Position X 0 - 100% 100% Usually set at 100% - Used to limit maximum damper opening in DCV mode
Filter Alarm Timer X 0 - 9999 hrs 0 hrs Disables Filter Alarm if set to 0Pushbutton Override X Disable/Enable Enable Enables Override Feature on Rnet sensorSPT Sensor Set Point
Adjustment X Disable/Enable Enable Enables Set Point adjustment capabilityon Rnet Sensor
Lockout Cooling ifOAT < X -65 - 80 F -65 F
Cooling is locked out when OAT is less than configured value and OAT is actively being
broadcast
Lockout Heating ifOAT > X 35 - 150 F 150 F
Heating is locked out when OAT is greater than configured value and OAT is actively
being broadcastPower Fail Restart
Delay X 0 - 600 sec 60 sec Delay before equipment starts
Occupancy Schedules X Disable/Enable Enable Enables unit occupied
Set Point Separation X 2 - 9 F 4 F Used to enforce minimumset point separation
Configuration
Service
Test
Admin Password level access only
Test Mode X Disable/Enable Disable Used to enable test mode. Will automatically reset to disable after 1 hour
Fan Test X Disable/Enable DisableUsed to test all fan speeds. Sequences fan
from low to high and operates each speed for 1 minute. Resets to disable on completion
Fan Speed Off/Low Speed/Medium Speed/High Speed/On Displays current fan operation
Compressor Test X Disable/Enable Disable
Used to test compressor cooling and heating operation. Sequences cooling stage 1, then stage 2, then heating stage 2 and reduces
capacity to stage 1. Operates for 1 minute per step. Resets to disable on completion.
Dehumidification Test X Disable/Enable DisableUsed to test dehumification mode -Operates for 2 minutes. Resets to
disable on completion.
Testing Compressor Inactive/Heating/Cooling/
Dehumidify/TimeGard Wait
Displays compressor test mode
Aux Heating Test X Disable/Enable Disable
Used to test auxiliary heat.Sequences fan on and enables
heating coil for 1 minute. Resets todisable on completion
H2O Economizer Test X Disable/Enable Disable
Used to test entering/return air water loop economizer coil operation. Sequences fan on and opens economizer coil water valve for 1
minute. Resets to disable on completion Preposition OA
Damper X Disable/Enable Disable Used to preposition OA damperactuator to set proper preload
Open VentDamper 100% X Disable/Enable Disable Used to test OA damper operation
SAT F Displays SAT
LCWT F Displays Leaving CondenserWater Temperature
BAS — Building Automation SystemDCV — Demand Controlled VentilationECM — Electronically Commutated MotorIAQ — Indoor Air QualityOAT — Outdoor Air TemperatureRH — Relative HumiditySAT — Supply Air TemperatureSPT — Space TemperatureTPI — Third Party Integration
46
APPENDIX A — WSHP SCREEN OPEN CONFIGURATION (cont)
LEGEND
SCREEN NAME PASSWORD LEVEL POINT NAME EDITABLE RANGE DEFAULT NOTES
Configuration
ServiceConfiguration
Admin Password level access only
# of Fan Speeds X 1,2,3 3 Used to set number offan motor speeds
G Output Type X Fan On/Fan Low Fan On
When set to Fan On, G output isenergized when ever any fan speedis active (required for ECM and Fan
control board). When set to FanLow, output is only energized for
Low Speed
Compressor Stages X One Stage/Two Stages One Stage Defines the number ofstages of compression
Reversing Valve Type X O type output/B type output O type Determines reversing valvesignal output type
Leaving Air Auxiliary Heat Type X None/2-Position HW/1 Stage
Electric/Modulating HW None Determines AuxiliaryReheat Coil Type
Entering Air Water Economizer Type X None/2-Position/Modulating None Determines Entering Air
Economizer Coil Type2-Position Water
Valve Type X Normally Closed/Normally Open Normally Closed
Determines type of 2-positionwater valve used
Modulating WaterValve Type X Normally Closed/Normally Open Normally
ClosedDetermines type of modulating
water valve usedVentilation Damper
Type X None/2-Position/DCV None Determines type of ventilation damper control to be used
Damper Actuator Type X (0-10 volt)/(2-10 volt) 0-10 voltUsed to determine ventilationdamper output signal range
(closed - open)
Humidity Sensor X None/Installed None Set to Installed if humiditysensor is present
Factory Dehumidifica-tion Reheat Coil X None/Installed None
Set to Installed if factory-installed dehumidification reheat coil
is presentOccupancyInput Logic X Occupied Open/Occupied Closed Occupied
CLOSEDUsed to determine external occu-
pancy switch contact occupied state Condensate Switch
Alarm Delay X 5 - 600 seconds 10 sec Delay before equipment alarms on high condensate level
Condensate Switch Alarm State X Alarm OPEN/Alarm CLOSED Alarm
CLOSEDDetermine Alarm state ofcondensate switch input
Minimum Condenser Water Temperature in
HeatingX 25 - 60 F 60 F
Determines the minimumacceptable water loop temperature
to start heatingMaximum Condenser Water Temperature in
HeatingX 65 - 100 F 90 F
Determines the maximumacceptable water loop temperature
to start heatingMinimum Condenser Water Temperature in
CoolingX 30 - 60 F 60 F
Determines the minimumacceptable water loop temperature
to start coolingMaximum Condenser Water Temperature in
CoolingX 85 - 120 F 95 F
Determines the maximumacceptable water loop temperature
to start coolingIAQ sensor
minimum input X 0 - 5 ma 4 ma Minimum output current (mA) for IAQ sensor
IAQ sensormaximum input X 5 - 20 ma 20 ma Maximum output current (mA) for
IAQ sensorIAQ sensor
minimum output X 0 - 9999 ppm 0 ppm Corresponding value in ppm forminimum output current
IAQ sensormaximum output X 0 - 9999 ppm 2000 ppm Corresponding value in ppm for
maximum output current
BAS — Building Automation SystemDCV — Demand Controlled VentilationECM — Electronically Commutated MotorIAQ — Indoor Air QualityOAT — Outdoor Air TemperatureRH — Relative HumiditySAT — Supply Air TemperatureSPT — Space TemperatureTPI — Third Party Integration
47
APPENDIX A — WSHP SCREEN OPEN CONFIGURATION (cont)
LEGEND
SCREEN NAME PASSWORD LEVEL POINT NAME EDITABLE RANGE DEFAULT NOTES
Configuration
AlarmConfiguration
Admin Password level access only
SPT Occupied AlarmHysteresis X 2 - 20 F 5 F
Defines the hysteresis applied above the cooling and below the heating set points before an alarm condition will
occur
SPT Alarm Delay X 0 - 30 min per degree 10 minUsed to calculate the delay time beforean alarm is generated after the alarm
condition occurs SPT Unoccupied LowAlarm Temperature X 35 - 90 F 45 F Defines the fixed unoccupied
ow SPT alarm limitSPT Unoccupied High
Alarm Temperature X 45 - 100 F 95 F Defines the fixed unoccupiedhigh SPT alarm limit
SAT Low SATAlarm Limit X 15 - 90 F 45 F Defines the fixed minimum
SAT alarm limitSAT High SAT
Alarm Limit X 90 - 175 F 120 F Defines the fixed maximumSAT alarm limit
Condensate OverflowAlarm Delay X 5 - 600 sec 10 sec
Defines the delay time before an alarm is generated after the alarm condition
occursSpace Humidity Occupied
High Alarm Limit X 45% - 100% 100% Defines the fixed occupiedhigh space RH alarm limit
Space Humidity Alarm Delay X 0 - 30 min per % RH 5 min
Used to calculate the delay time beforean alarm is generated after the alarm
condition occurs Space Humidity Unoccu-
pied High Alarm Limit X 45% - 100% 100% Defines the fixed unnoccupiedhigh space RH alarm limit
IAQ/Ventilation Occupied High Alarm Limit X 0 - 9999 ppm 1100 ppm Defines the fixed occupied high
space IAQ/Ventilation alarm limit
IAQ/VentilationAlarm Delay X 0.1 - 1.0 min per ppm 0.25 min
Used to calculate the delay time beforean alarm is generated after the alarm
condition occurs
Rnet Sensor SPT Alarm X Ignore/Display Ignore Determines if the SPT alarm isdisplayed on the local Rnet sensor
Rnet Sensor SAT Alarm X Ignore/Display Ignore Determines if the SAT alarm isdisplayed on the local Rnet sensor
Rnet Sensor Compressor Lockout Alarm X Ignore/Display Display
Determines if the Compressor Lockoutalarm is displayed on the local Rnet
sensor
Rnet Sensor Condenser Water Temperature Alarm X Ignore/Display Display
Determines if the Condenser WaterTemperature alarm is displayed on the
local Rnet sensor
Rnet Sensor Condensate Overflow Alarm X Ignore/Display Display
Determines if the CondensateOverflow alarm is displayed on the
local Rnet sensorRnet Sensor Dirty
Filter Alarm X Ignore/Display Display Determines if the Dirty Filter alarm isdisplayed on the local Rnet sensor
Rnet Sensor SpaceHigh Humidity Alarm X Ignore/Display Ignore
Determines if the High SpaceRH alarm is displayed on the
local Rnet sensor
Configuration
Linkage
Loop Control Network Number See TPI
Loop Control Network Address See TPI
Number of Linked Heat Pumps See TPI
BAS — Building Automation SystemDCV — Demand Controlled VentilationECM — Electronically Commutated MotorIAQ — Indoor Air QualityOAT — Outdoor Air TemperatureRH — Relative HumiditySAT — Supply Air TemperatureSPT — Space TemperatureTPI — Third Party Integration
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500069-01 Printed in U.S.A. Form 50HQP-1SI Pg 50 5-10 Replaces: New
Copyright 2010 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 536-203 Printed in U.S.A. Form 62AQ-1SI Pg CL-1 7-99 Replaces: NewBook 1 1 1 4 4 4
Tab 1a 1b 5a 5a 6a 6b
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500069-01 Printed in U.S.A. Form 50HQP-1SI Pg CL-1 5-10 Replaces: New
START-UP CHECKLIST
CUSTOMER:___________________________ JOB NAME: _______________________________________
MODEL NO.:___________________________ SERIAL NO.:____________________ DATE:_________
I. PRE-START-UP
DOES THE UNIT VOLTAGE CORRESPOND WITH THE SUPPLY VOLTAGE AVAILABLE? (Y/N)
HAVE THE POWER AND CONTROL WIRING CONNECTIONS BEEN MADE AND TERMINALS TIGHT? (Y/N)
HAVE WATER CONNECTIONS BEEN MADE AND IS FLUID AVAILABLE AT HEAT EXCHANGER?(Y/N)
HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN? (Y/N)
HAS CONDENSATE CONNECTION BEEN MADE AND IS A TRAP INSTALLED? (Y/N)
IS AN AIR FILTER INSTALLED? (Y/N)
II. START-UP
IS FAN OPERATING WHEN COMPRESSOR OPERATES? (Y/N)
IF 3-PHASE SCROLL COMPRESSOR IS PRESENT, VERIFY PROPER ROTATION PER INSTRUCTIONS.(Y/N)
UNIT VOLTAGE — COOLING OPERATION
PHASE AB VOLTS PHASE BC VOLTS PHASE CA VOLTS(if 3 phase) (if 3 phase)
PHASE AB AMPS PHASE BC AMPS PHASE CA AMPS (if 3 phase) (if 3 phase)
CONTROL VOLTAGE
IS CONTROL VOLTAGE ABOVE 21.6 VOLTS? (Y/N) .IF NOT, CHECK FOR PROPER TRANSFORMER CONNECTION.
TEMPERATURES
FILL IN THE ANALYSIS CHART ATTACHED.
COAXIAL HEATEXCHANGER
COOLING CYCLE:FLUID IN F FLUID OUT F PSI FLOW
HEATING CYCLE:FLUID IN F FLUID OUT F PSI FLOW
AIR COIL COOLING CYCLE:AIR IN F AIR OUT F
HEATING CYCLE:AIR IN F AIR OUT F
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500069-01 Printed in U.S.A. Form 50HQP-1SI Pg CL-2 5-10 Replaces: New
Copyright 2010 Carrier Corporation
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HEATING CYCLE ANALYSIS
COOLING CYCLE ANALYSIS
HEAT OF EXTRACTION (ABSORPTION) OR HEAT OF REJECTION =
FLOW RATE (GPM) x TEMP. DIFF. (DEG. F) x FLUID FACTOR* =(Btu/hr)
SUPERHEAT = SUCTION TEMPERATURE – SUCTION SATURATION TEMPERATURE= (DEG F)
SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE= (DEG F)
*Use 500 for water, 485 for antifreeze.
SUCTION
COMPRESSOR
DISCHARGECOAXEXPANSIONVALVE
°F °F
AIRCOIL
°F
PSIWATER OUTWATER IN
°F
PSI
°F
LIQUID LINE
PSI
°F
SAT
SUCTION
COMPRESSOR
DISCHARGECOAXEXPANSIONVALVE
°F °F
AIRCOIL
°F
PSIWATER OUTWATER IN
°F
PSI
°F
LIQUID LINE
PSI
°F
SAT