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Instruction Manual

PRINTED 0114

329360-000

PLACE THESE INSTRUCTIONS ADJACENT TO HEAT PUMP AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.

COMMERCIAL ELECTRIC AIR-TO-WATER HEAT PUMP WATER HEATER

MODELS WH-35 to WH-170

SERIES 100

INSTALLATION - OPERATION - SERVICE

MAINTENANCE - LIMITED WARRANTY

820 SW 41st Street

Renton, WA 98057

Read and understand this instruction

manual and the safety messages

herein before installing, operating or

servicing this water heater.
Failure to follow these instructions and

safety messages could result in death

or serious injury.
This manual must remain with the

water heater.

FOR INDOOR INSTALLATION ONLY

Содержание WH-35

Страница 1: ...70 SERIES 100 INSTALLATION OPERATION SERVICE MAINTENANCE LIMITED WARRANTY 820 SW 41st Street Renton WA 98057 Read and understand this instruction manual and the safety messages herein before installing operating or servicing this water heater Failure to follow these instructions and safety messages could result in death or serious injury This manual must remain with the water heater FOR INDOOR INS...

Страница 2: ......

Страница 3: ...Tank Thermostat Wiring 37 Standard Tank Thermostat Wiring 38 High Ambient Air Kit Wiring 39 Building Recirculation Pump Wiring Diagram 40 PIPING DIAGRAMS 41 LIMITED WARRANTY 47 TABLE OF CONTENTS 3 SAFE INSTALLATION USE AND SERVICE 4 GENERAL SAFETY INFORMATION 5 Precautions 5 Grounding Instructions 5 INTRODUCTION 6 Qualifications 6 Preparing For The Installation 6 Principle Of Operation 7 The Refri...

Страница 4: ...d possible injury or death WARNING indicates a potentially hazardous situation which if not avoided could result in injury or death CAUTION indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury CAUTION used without the safety alert symbol indicates a potentially hazardous situation which if not avoided could result in property damage All safety m...

Страница 5: ...per procedures or the use of non approved refrigerants refrigerant substitutes or refrigerant additives could result in death or serious injury or equipment damage Explosion Hazard Do not use oxygen to purge or pressurize system for leak test Oxygen reacts violently with oil which can cause an explosion resulting in severe personal injury or death Turn off power to the water heater before performi...

Страница 6: ...NG APPLIANCE INTRODUCTION 6 Detailed installation diagrams are in this manual These diagrams will serve to provide the installer with a reference for the materials and suggested methods of piping IT IS NECESSARY THAT ALL WATER PIPING AND THE ELECTRICAL WIRING BE INSTALLED AND CONNECTED AS SHOWN IN THE DIAGRAMS Particular attention should be given to the installation of the system tank temperature ...

Страница 7: ... flowing through the tubes and air flowing across the fins The Blower moves ambient air from the installed space or air ducted to the HPWH from another location across the fins of evaporator coil The refrigerant absorbs heat from the air in the evaporator The refrigerant changes state boils evaporates from a liquid state back into a gas vapor in the evaporator The refrigerant flows out of the evap...

Страница 8: ...LIQUID COMPONENT WATER CIRCUIT A WATER INLET B WATER PUMP C HEAT EXCHANGER CONDENSER D WATER OUTLET WARM RETURN AIR IN COOL SUPPLY AIR OUT ACCUMULATOR COMPRESSOR CONDENSER HEAT EXCHANGER REFRIGERANT TO WATER CONDENSATE DRAIN SUPPLY AIR OUTLET EVAPORATOR COIL HEAT EXCHANGER AIR TO REFRIGERANT RETURN AIR INLET AIR FILTERS BLOWER BLOWER MOTOR THERMOSTATIC EXPANSION VALVE TXV CONTROL PANEL WATER PUMP ...

Страница 9: ... 1 5 63 38 42 5 8 660 WH 115 33 1 113 000 89 000 7 4 4 2 3200 23 1 5 63 38 42 5 8 665 WH 140 41 6 142 000 110 000 9 2 3 9 3800 28 2 0 63 38 42 5 8 725 WH 170 50 1 171 000 133 000 11 1 3 9 4900 34 2 0 75 46 42 5 8 880 All dimensions are in inches Weights are approximate shipping weights Performance rating at 75ºF Entering Air Temperature and 55 Relative Humidity 100ºF Entering Water Temperature Blo...

Страница 10: ...rating range the HPWH unit s Ambient Air Limit Thermostat will discontinue heating operation until the entering air temperature returns to this operating range See Figure 15 on page 37 High Ambient Air Kits are available that will allow the unit to operate with entering air temperatures up to 120 F 49 C These accessory kits must be installed if entering air temperatures exceed 95 F 35 C for extend...

Страница 11: ...g return inlet air from an alternate location may be necessary to access an Building Air Pressure Air Flow and Ducting on page 19 CLEARANCES To ensure optimal performance a minimum of 30 inches clearance is required from the back left and right sides of the HPWH unit and any wall obstruction A minimum of 36 inches clearance on the front of the unit for access to the control box See Figure 3 When i...

Страница 12: ...o this could result in death serious bodily injury or property damage The load current rating and the overcurrent protection for these conductors shall not exceed 15 amperes for 14 AWG 20 amperes for 12 AWG and 30 amperes for 10 AWG copper or 15 amperes for 12 AWG and 25 amperes for 10 AWG aluminum and copper clad aluminum For dry locations only See 75 C column for wet locations MINIMUM WIRE SIZE ...

Страница 13: ...t of use then special precautions must be taken In addition to using the lowest possible temperature setting that taps to further reduce system water temperature Mixing valves are available at plumbing supply stores Consult manufacturer s instructions for installation of the valves WATER PIPING Read all installation requirements in this manual before installation begins The water piping installati...

Страница 14: ...cause brain damage or death Always read and understand instruction manual Breathing Hazard Carbon Monoxide Gas The supply outlet air from a HPWH installed in a garage or a unit drawing return inlet air from a garage or any area where solvents or other chemicals that emit potentially harmful fumes are stored or automobiles are located must never be ducted to any other space inside the building stru...

Страница 15: ...s unless spreader bars are furnished and used as depicted in Figure 4 and Figure 5 The side panels and roof of the unit are not constructed to handle significant force from the sides or above The HPWH unit is heaviest on the compressor side left side when facing the front of the unit See Figure 4 and Figure 6 When using a forklift to raise the HPWH unit ensure the forks are positioned correctly be...

Страница 16: ...WH in new construction the following critical points must be observed The HPWH unit 1 Must be installed indoors 2 Should be installed near a floor drain for condensate removal 3 The HPWH storage tank and water heater s should be located in an area where leakage will not result in damage to adjacent area or to lower floors in the building structure 4 The HPWH unit must be level for proper condensat...

Страница 17: ...NS 1 This HPWH unit is not designed to supply hot water directly to hot water fixtures The HPWH unit must be installed with a separate storage tank as shown in the water piping diagrams in this instruction manual 2 Water lines installed between the storage tank and the HPWH unit MUST NOT be less than the water pipe connection sizes on the unit See Table 4 on page 13 3 The HPWH should be plumbed di...

Страница 18: ...ANK PRE HEAT CONFIGURATION When water temperatures above 140 F 60 C are required the HPWH and storage tank are piped in series upstream with a backup water heater See Water Temperature on page 10 The backup water heater will raise the temperature of the preheated water to the final system temperature required Figure 8 shows a typical preheat piping configuration 18 DIGITAL TANK THERMOSTAT HPWH HOT...

Страница 19: ...the building structure Gas and carbon monoxide detectors are available Breathing carbon monoxide can cause brain damage or death Always read and understand instruction manual Breathing Hazard Carbon Monoxide Gas The supply outlet air from a HPWH installed in a garage or a unit drawing return inlet air from a garage or any area where solvents or other chemicals that emit potentially harmful fumes a...

Страница 20: ...ir entering the HPWH unit the supply air may not be suitable for supplemental space cooling purposes The air temperature drops approximately 12 F to 20 F 7 C to 11 C as it flows through the HPWH unit If the return air to the HPWH unit is derived from a location that is above 80 F 27 C the supply air from the HPWH unit will not be suitable for offsetting the building cooling load This will often be...

Страница 21: ...ct length TABLE 7 FLEXIBLE DUCT DUCT SIZE INCHES 6 8 10 12 14 16 18 20 22 24 MODEL CFM EXT in WG MAXIMUM EQUIVALENT LENGTH FEET WH 35 1040 0 35 6 18 45 93 185 WH 55 1650 0 35 3 8 18 40 77 137 WH 75 2150 0 35 5 11 23 47 83 139 WH 100 3200 0 35 3 6 14 26 48 80 130 WH 115 3200 0 35 5 12 22 38 66 104 WH 140 3800 0 35 4 8 16 29 49 76 116 WH 170 4900 0 35 2 5 10 18 30 48 74 ELBOW SIZE IN 6 8 10 12 14 16...

Страница 22: ...et Water Temperature on page 10 See Figure 7 and Figure 8 on page 18 14 On two tank preheat piping configurations ensure the cold INSTALLATION CHECKLIST 22 water supply is not connected to the back up water heater 15 Connect building recirculation loop piping to the backup water heater inlet on two tank preheat piping configurations 16 Ensure the building recirculation loop pump is controlled by a...

Страница 23: ...e mentioned above call the toll free technical support phone number on the back cover of this manual for further assistance 6 When all of the above procedures are complete adjust the tank temperature control set point to desired system temperature not to exceed 140 F 60 C Remove all test instruments and replace all cabinet doors This start up refers to several tools and test instruments needed to ...

Страница 24: ...N buttons to adjust to the desired differential set point 3 When complete press the SET button to save the change 4 The operating mode of the thermostat will be shown on the LED display next as CoL for Refrigeration Cooling mode or Hot for Heating mode Note the factory for operating mode is Hot and should not be changed TEMPERATURE UNITS SETTING F C To define the temperature units that thermostat ...

Страница 25: ... ASSEMBLY Before performing any maintenance on the blower assembly disconnect all power to the unit and follow the prescribed lock out tag out procedure Inspect and tighten all bearing collar and wheel set screws after every six months During inspection visually check the drive belt for wear or cracking Replace as necessary but do not apply any belt dressing products Inspect all set screws on the ...

Страница 26: ...pplication and usage instructions 5 Allow the unit to dry thoroughly 6 If necessary apply an anti microbial agent on the insulation per the instructions provided on the product label 7 Discard collected microbial contaminants as required by local or state codes BRAZE PLATE CLEANING INSTRUCTIONS In some applications the heat exchanger may be subjected to severe fluid conditions including high tempe...

Страница 27: ...it pump reduce piping or add booster pump clean heat exchanger with a mild acid wash open all shut off valves Heat pump is not running low pressure fault 1 Room temperature below 50 F 2 Blower not operating at nameplate CFM blower belt is broken or out of alignment filters are dirty 3 Unit does not have adequate clearances obstructing air flow 4 Loss of refrigerant Keep heat pump off until room te...

Страница 28: ... new installations ensure the maximum equivalent feet of inlet and outlet piping was not exceeded This is the most common cause of excessive water temperature rise on new installations See number 11 on page 22 SUBCOOLING CALCULATION 1 Measure and record the liquid pressure at the liquid line pressure test port inside the unit 2 Convert the recorded liquid line pressure to saturated temperature usi...

Страница 29: ...esent The cause of the pressure switch contacts opening must be corrected and the control system must be reset before the HPWH will resume compressor operation See Table 11 for pressure switch activation pressures Low and High pressure switch LED lights on the Control Board will be energized during this fault condition as a diagnostic aid to indicate which switch has cased the fault condition See ...

Страница 30: ...e containing a relay or triac transformer and several electronic components Leads from the internal motor sensors are connected to the module As the motor temperature rises or falls the resistance also rises or falls triggering the action of the control circuit at predetermined opening and closing settings DELAY TIMERS Time Delay By Pass Low Pressure Switch Bypass When power is applied to the inpu...

Страница 31: ... Monitor Factory If installed PC Pump Contactor Factory Load pump if installed BC Blower Contactor Factory CC Compressor Contactor Factory HP High Pressure Switch Factory Indicates high pressure fault REMHP Remote High Pressure dry contact Field Remote fault alert LP Low Pressure Switch Factory Indicates low pressure fault REMLP Remote Low Pressure dry contact Field Remote fault alert ON OFF Remot...

Страница 32: ...UNIT WIRING DIAGRAMS FUSE SIZES 208 230 VAC SINGLE PHASE 60 HZ 32 ...

Страница 33: ...UNIT WIRING DIAGRAMS FUSE SIZES 208 230 VAC THREE PHASE 60 HZ WH 35 WH 55 and WH 75 only 33 ...

Страница 34: ...UNIT WIRING DIAGRAMS FUSE SIZES 208 230 VAC THREE PHASE 60 HZ only 34 ...

Страница 35: ...UNIT WIRING DIAGRAMS FUSE SIZES 460 VAC THREE PHASE 60 HZ 35 ...

Страница 36: ...UNIT WIRING DIAGRAMS FUSE SIZES 460 VAC THREE PHASE 60 HZ only 36 ...

Страница 37: ...E AIR TEMPERATURE SENSOR RANCO DIGITAL THERMOSTAT PART ETC 212000 000 24V COM NC NO C NC C NO DIGITAL TANK THERMOSTAT FULL GAUGE MODEL MT511Ri NOTE TANK TEMPERATURE SETTING MUST NOT EXCEED 140 F 60 C C NO NC 12 11 10 9 8 7 6 5 4 3 2 1 OUTPUT 24 VAC COM 24 VAC HOT HPWH TERMINAL STRIP AMBIENT AIR LIMIT THERMOSTAT OUTPUT 1 OUTPUT 2 AMBIENT AIR LIMIT THERMOSTAT CONFIGURATION NOTES 1 Configure stage 1 ...

Страница 38: ...RATION NOTES 1 Configure stage 1 for cooling 2 Configure stage 2 for heating 3 Set cooling set point at 50 F 4 Set heating set point 95 F 5 Set cooling differential to 10 F 6 Set heating differential to 5 F 7 Locate remote air temperature sensor near return entering air connection or inside return air ducting near unit When High Ambient Air Kit is installed adjust heating set point to 120 F RANCO ...

Страница 39: ...se on fall WHITE Close RED Close BLACK Close C NO NC 1 2 3 4 5 6 7 8 9 0 1 1 1 2 1 OUTPUT THERMOSTAT TERMINAL STRIP HPWH TERMINAL STRIP AMBIENT AIR LIMIT THERMOSTAT CONFIGURATION NOTES 1 Configure stage 1 for cooling 2 Configure stage 2 for heating 3 Set cooling set point at 50 F 4 Set heating set point 120 F 5 Set cooling differential to 10 F 6 Set heating differential to 5 F 7 Locate remote air ...

Страница 40: ...GE TANK FIELD SUPPLIED LINE TEMPERATURE CONTROL INSTALLED IN THE CIRCULATING LOOP RETURN LINE CIRC PUMP MOTOR L1 HOT L2 NEUTRAL 120 VAC POWER NOTE USE SEPARATE 120 VAC POWER SUPPLY FOR PUMP CIRCUIT Figure 18 HIGH AMBIENT AIR KITS TABLE 14 WH 35 9500012730 WH 55 9500012731 WH 75 9500012732 WH 100 9500012733 WH 115 WH 140 9500012734 WH 170 9500012735 40 ...

Страница 41: ...SURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP DRAIN WYE STRAINER FULL PORT BALL VALVE TEMPERATURE GAGE CHECK VALVE TANK OR LINE TEMPERATURE CONTROL WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS ONE AIR TO WATER HEAT PUMP SINGLE TEMPERATURE PREHEAT SYSTEM WITH VERTICAL STORAGE TANK AND BACKUP ...

Страница 42: ...VE TEMPERATURE GAGE CHECK VALVE WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS TANK OR LINE TEMPERATURE CONTROL ONE AIR TO WATER HEAT PUMP SINGLE TEMPERATURE WITH VERTICAL STORAGE TANK WITH FORCED BUILDING RECIRCULATION FINISHED FLOOR HPWH STORAGE TANK LINE THERMOSTAT TANK THERMOSTAT SUPPLY HOT OUTLET TO...

Страница 43: ...RN COLD WATER SUPPLY LINE THERMOSTAT NOTE CONNECT BUILDING RECIRC RETURN TO INLET OF BACKUP WATER HEATER WHEN PRESENT TANK THERMOSTAT PIPE T P TO OPEN DRAIN RETURN WATER INLET PURGE VALVE SUPPLY WATER OUTLET STORAGE TANK FIELD SUPPLIED PUMP FOR HPWH MODELS WITHOUT FACTORY PUMP HPWH HPWH DRAIN FLUSH VALVES FLUSH VALVES WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHEC...

Страница 44: ...FULL PORT BALL VALVE TEMPERATURE GAGE CHECK VALVE TANK OR LINE TEMPERATURE CONTROL WARNING THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS ONE AIR TO WATER HEAT PUMP SINGLE TEMPERATURE WITH HORIZONTAL STORAGE TANK WITH FORCED BUILDING RECIRCULATION HOT OUTLET TO FIXTURES OR INLET OF BACKUP WATER HEATER TANK THERM...

Страница 45: ...S AND ORDINANCES FOR ADDITIONAL REQUIREMENTS LEGEND TEMPERATURE PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP DRAIN WYE STRAINER FULL PORT BALL VALVE TEMPERATURE GAGE CHECK VALVE TANK OR LINE TEMPERATURE CONTROL TWO AIR TO WATER HEAT PUMPS SINGLE TEMPERATURE WITH HORIZONTAL STORAGE TANK WITH FORCED BUILDING RECIRCULATION HOT OUTLET TO FIXTURES OR INLET OF BACKUP WATER HEATER BUILDIN...

Страница 46: ...tion of it in a modified form will void this warranty 4 SERVICE REPAIR AND EXPENSE Under this limited warranty the warrantor will provide only a replacement heat pump water heater or part thereof The owner is responsible for all other costs Such costs may include but are not limited to a Labor charges for service removal repair or reinstallation of the water heater or any component part b Shipping...

Страница 47: ...stalled Dealer s Name Dealer s Address Phone No City and State Zip Fill in the following for your own reference Keep it Registration is not a condition of warranty The model and serial number are found on the heater s rating label ...

Страница 48: ...500 Tennessee Waltz Parkway Ashland City TN 37015 Technical Support 800 527 1953 Parts 800 433 2545 Fax 800 644 9306 www hotwater com ...

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