Carrier AQUAZONE 50PSH Installation And Service Instructions Manual
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Carrier AQUAZONE 50PSH Installation And Service Instructions Manual

Single-stage water source heat pumps with puron refrigerant (r-410a)
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Step 1 - Check Jobsite. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 - Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• STORAGE
• PROTECTION
Step 3 - Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
• FIELD CONVERSION OF DISCHARGE AIR
Step 4 - Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 5 - Check Duct System . . . . . . . . . . . . . . . . . . . . . . 9
• SOUND ATTENUATION
• EXISTING DUCT SYSTEM
Step 6 - Install Condensate Drain. . . . . . . . . . . . . . . . . 9
• HORIZONTAL UNIT
• VENTING
Step 7 - Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . 10
KIT
Step 8 - Wire Field Power Supply . . . . . . . . . . . . . . . . 13
• POWER CONNECTION
• SUPPLY VOLTAGE
• 208-VOLT OPERATION
• 460-VOLT OPERATION
Step 9 - Wire Field Controls . . . . . . . . . . . . . . . . . . . . . 27
• WATER FREEZE PROTECTION
• ACCESSORY CONNECTIONS
• WSHP OPEN WIRING
• COOLING
• HEATING
• CFM ADJUST
• DEHUMIDIFICATION MODE
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . . . . 32-35
Complete C Control Jumper Settings . . . . . . . . . . . . . 32
Deluxe D Control Jumper Settings . . . . . . . . . . . . . . . . 32
Complete C Control DIP Switches. . . . . . . . . . . . . . . . . 32
Deluxe D Control DIP Switches . . . . . . . . . . . . . . . . . . . 32
Units with Modulating Hot Water Reheat
(HWR) Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Deluxe D Control Accessory
Relay Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500055-01
Installation, Start-Up, and
Service Instructions
Page
Printed in U.S.A.
50PSH, PSV, PSD006-070
Single-Stage Water Source Heat Pumps
with PURON
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-42
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . . .35
Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . . .35
Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . . .36
Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . . .42
Heat Exchanger Well Systems. . . . . . . . . . . . . . . . . . .42
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-46
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Units with Aquazone Deluxe D Control . . . . . . . . . . . .42
Units with HWR Option. . . . . . . . . . . . . . . . . . . . . . . . . . . .43
SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46,47
Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
WSHP Open Test Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . . .48
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . . .49
Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . . .49
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . 49-57
Control Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
WSHP Open Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Thermostatic Expansion Valves . . . . . . . . . . . . . . . . . . . 50
Stopped or Malfunctioned ECM Motor . . . . . . . . . . . . . 54
Moisture Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58-63
CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1, CL-2
IMPORTANT: Read the entire instruction manual before
starting installation.
Form 50PS-3SI
AQUAZONE™
®
Refrigerant (R-410A)
Pg 1
7-09
Replaces: 50PS-2SI
Page

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Do you have a question about the AQUAZONE 50PSH and is the answer not in the manual?

Questions and answers

jane
March 7, 2025

can this unit be used for residential applications and installed in a crawl space?

0
1 comments:
Mr. Anderson
March 7, 2025

The Carrier AQUAZONE 50PSH unit can be used in various applications, including residential settings. The manual mentions that the unit can be installed in different configurations, including horizontal installations with proper drainage considerations. Since crawl spaces often require compact and efficient HVAC solutions, the 50PSH unit could be suitable if proper installation guidelines, including drainage and vibration absorption, are followed. However, it is essential to check local codes and ensure adequate ventilation and access for maintenance.

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Summary of Contents for Carrier AQUAZONE 50PSH

  • Page 1: Table Of Contents

    Installation, Start-Up, and Service Instructions CONTENTS SAFETY CONSIDERATIONS ..... . . 2 GENERAL......... . 2 INSTALLATION.

  • Page 2: Safety Considerations

    • 50PSV unit with vertical airflow and top discharge • 50PSD unit with vertical airflow and bottom discharge (downflow) IMPORTANT: The installation of water source heat pump units and all associated components, parts, and accessories which make up the installation shall be in accordance with the regulations of ALL authorities having jurisdiction and MUST conform to all applicable codes.

  • Page 3: Step 2 - Check Unit

    Table 1 — Physical Data — 50PSH, PSV, PSD018-070 Units 50PS UNIT SIZE 006* COMPRESSOR (1 Each) FACTORY CHARGE R-410A (oz) ECM FAN MOTOR AND BLOWER Fan Motor (Hp) Blower Wheel Size (D x W) (in.) PSC FAN MOTOR AND BLOWER (3 Speeds) Fan Motor (Hp) High Static Fan Motor (Hp)

  • Page 4: Inspect Unit

    Before installing any of the system components, be sure to examine each pipe, fitting, and valve, and remove any dirt or foreign material found in or on these components. CAUTION DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.).
  • Page 5 WATER CONNECTIONS OVERALL CABINET 50PSH (in.) UNIT SIZE Width Depth Height 006,009, 22.4 43.1 17.3 22.4 62.2 19.3 2.1 10.0 13.9 16.9 024, 22.4 62.2 19.3 2.1 10.0 13.9 16.9 25.4 71.2 21.3 3.4 10.8 15.6 18.9 042, 25.4 76.2 21.3 3.4 10.8 15.6...
  • Page 6 WATER CONNECTIONS OVERALL CABINET 50PSV (in.) UNIT SIZE Width Depth Height 006,009, 22.4 21.6 34.5 22.4 25.6 44.6 2.1 10.0 13.9 16.9 024, 22.4 25.6 48.5 2.1 10.0 13.9 16.9 25.4 30.6 50.5 3.4 10.8 15.6 18.9 042, 25.4 30.6 54.5 3.4 10.8 15.6...
  • Page 7 WATER CONNECTIONS OVERALL CABINET 50PSD (in.) UNIT SIZE Width Depth Height 22.4 25.6 48.4 2.1 10.0 13.9 16.9 024, 22.4 25.6 52.5 2.1 10.0 13.9 16.9 25.4 30.6 54.5 3.4 10.8 15.6 18.9 042, 25.4 30.6 58.5 3.4 10.8 15.6 18.9 060, 25.4...

  • Page 8: Step 3 - Locate Unit

    Supply Air Building Loop Flexible Connection Water Return Water Stainless steel braid hose with integral “J” swivel (field-installed accessory) Power Thermostat Wiring Ball Valve with optional integral P/T plug Compressor (typical for supply and Access Panel return piping) (field-Installed A50-7730 accessory) NOTE: Ball valve with integral pressure temperature plug recommended.

  • Page 9: Step 4 - Mount The Unit

    Preparation — The unit should be on the ground in a well lit area. Hung units should be taken down to ground level before converting. Side to Back Discharge Conversion 1. Remove screws to free the top and discharge panels. Set screws aside for later use.

  • Page 10: Ground-Water Applications

    3 types of WSHP piping systems to choose from: water loop, ground-water and ground loop. Refer to Piping Section of Carrier System Design Manual for addi- tional information. All WSHP units use low temperature soldered female pipe...
  • Page 11 CONDITION MATERIAL* Scaling Potential — Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below. pH/Calcium Hardness Method 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.

  • Page 12: Ground-Loop Applications

    In all applications, the quality of the water circulated through the heat exchanger must fall within the ranges listed in the Water Quality Guidelines table. Consult a local water firm, independent testing facility, or local water authority for specific recommendations to maintain water quality within the pub- lished limits.

  • Page 13: Step 8 - Wire Field Power Supply

    Optional pressure-rated hose assemblies designed specifi- cally for use with Carrier units are available. Similar hoses can be obtained from alternate suppliers. Supply and return hoses are fitted with swivel-joint fittings at one end to prevent kink- ing during installation.
  • Page 14 — Alarm Relay Contacts ASTAT — Aquastat — Blower Relay — Circuit Breaker — Compressor Contactor — Condensate Overflow Sensor COMPR — Compressor — Discharge Temp Switch — Water Coil Freeze Protection Sensor — Air Coil Freeze Protection Sensor — High-Pressure Switch —...
  • Page 15 — Alarm Relay Contacts ASTAT — Aquastat — Blower Motor — Blower Motor Capacitor — Blower Relay — Circuit Breaker — Compressor Contactor — Condensate Overflow Sensor COMPR — Compressor — Discharge Temp Switch — Water Coil Freeze Protection Sensor —...
  • Page 16 — Alarm Relay Contacts ASTAT — Aquastat — Blower Motor — Blower Relay — Circuit Breaker — Compressor Contactor — Condensate Overflow Sensor COMPR — Compressor — Discharge Temp Switch — Electronically Commutated Motor — Water Coil Freeze Protection Sensor —...
  • Page 17 — Alarm Relay Contacts ASTAT — Aquastat — Blower Motor — Blower Motor Capacitor — Blower Relay — Circuit Breaker — Compressor Contactor — Sensor, Condensate Overflow — Discharge Temperature Switch — Electronically Commutated Motor — Sensor, Water Coil Freeze Protection —...
  • Page 18 — Alarm Relay Contacts ASTAT — Aquastat — Blower Motor — Blower Motor Capacitor — Blower Relay — Circuit Breaker — Compressor Contactor — Sensor, Condensate Overflow — Discharge Temperature Switch — Electronically Commutated Motor — Sensor, Water Coil Freeze Protection —...
  • Page 19 — Alarm Relay Contacts ASTAT — Aquastat — Blower Motor — Blower Relay — Circuit Breaker — Compressor Contactor — Sensor, Condensate Overflow — Cooling Relay — Discharge Temp Switch — Electronically Commuted Motor — Sensor, Water Coil Freeze Protection —...
  • Page 20 A50-8355...
  • Page 21 A50-8354...
  • Page 22 A50-8356...
  • Page 23 A50-8353...
  • Page 24 a50-8380 GREEN Rnet+ WHITE Rnet- BLACK +12V To WSHP Controller Rnet Terminals (J13) LED1 GREEN Rnet+ WHITE Rnet- BLACK +12V To WSHP Controller Rnet Terminals (J13)
  • Page 25 Table 4 — 50PSH, PSV, PSD Electrical Data — PSC Motor COMPRESSOR 50PS RATED VOLTAGE UNIT VOLTAGE MIN/MAX SIZE V-Ph-Hz 208/230-1-60 197/254 208/230-1-60 197/254 208/230-1-60 197/254 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 12.8 208/230-3-60 197/254 460-3-60 414/506 208/230-1-60 197/254 13.5 265-1-60 239/292 10.9...
  • Page 26 Table 6 — 50PSH, PSV, PSD Electrical Data, ECM Motor 50PS RATED VOLTAGE UNIT VOLTAGE MIN/MAX SIZE V-Ph-Hz 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 12.8 208/230-3-60 197/254 460-3-60 414/506 208/230-1-60 197/254 13.5 265-1-60 239/292 10.9 208/230-3-60 197/254 460-3-60 414/506 208/230-1-60 197/254 14.7 265-1-60...

  • Page 27: Step 9 - Wire Field Controls

    Step 9 — Wire Field Controls THERMOSTAT CONNECTIONS — The thermostat should be wired directly to the ECM control board. See Fig. 27. WATER FREEZE PROTECTION — The Aquazone™ con- trol allows the field selection of source fluid freeze protection points through jumpers.
  • Page 28 NOTE: If the Rnetbus has multiple SPT Standard sensors, each sensor must be given a unique address on the Rnetbus. See the Carrier Open Sensor Installation Guide. Use the specified type of wire and cable for maximum signal integrity. See Table 9.

  • Page 29: Step 10 - Operate Ecm Interface Board

    OUTER JACKET .25 IN. INNER INSULATION Fig. 32 — Rnet Cable Wire 3. Wire each terminal on the sensor to the same terminal on the controller. See Fig. 15-25. Table 10 shows the recom- mended Rnet wiring scheme. Table 10 — Rnet Wiring WIRE Black White...
  • Page 30 Table 11. When dehumidifi- cation is enabled, there is a reduction in airflow in cooling to in- crease the moisture removal of the heat pump. The Dehumidification mode can be enabled in two ways: 1.
  • Page 31 50PS RATED UNIT AIRFLOW SPEED 0.00 SIZE HS HI HS MED HS LO HS HI 1271 HS MED 1048 HS LO 1271 1048 HS HI 1439 HS MED 1186 HS LO 1039 1411 1171 1250 HS HI 1648 HS MED 1344 HS LO 1141...

  • Page 32: Pre-Start-Up

    PERFORMANCE MONITOR (PM) — The PM is a unique feature that monitors water temperature and will display a warn- ing when heat pump is beyond typical operating range. Refer to Control Operation section for detailed information. DIP switch 1 will enable or disable this feature. To enable the PM, set the switch to ON.

  • Page 33: (Hwr) Option

    2, W1 is used for heating stage 1 and O/W2 is used for heating stage 2. Select ON for heat pump thermostats. In heat pump mode, Y1 used is for compressor stage 1, Y2 is used for compressor stage 2, W1 is used for heating stage 3 or emergency heat, and O/W2 is used for reversing valve (heating or cooling) depending upon switch 4 setting.
  • Page 34 Internal Pump (From Water Loop) NOTE: All components shown are internal to the heat pump unit. HWR COMPONENT FUNCTIONS — The proportional controller operates on 24 VAC power supply and automatically adjusts the water valve based on the supply-air sensor. The...

  • Page 35: Relay Configurations

    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. Refer to Table 14 for unit operating limits.

  • Page 36: Unit Start-Up Heating Mode

    4. Check the temperature of both supply and discharge water. Compare to Tables 20-30. If temperature is within range, proceed. If temperature is outside the range, check the cooling refrigerant pressures in Tables 20-30. 5. Check air temperature drop across the coil when com- pressor is operating.
  • Page 37 Table 22 — 50PSH, PSV, PSD012 Typical Unit Operating Pressures and Temperatures FULL LOAD COOLING — WITHOUT HWG ACTIVE ENTERING WATER WATER Suction Discharge FLOW TEMP Pressure Pressure (GPM/ton) (psig) (psig) 98-108 140-160 2.25 98-108 135-155 99-109 127-148 118-128 215-235 2.25 118-128 200-220...
  • Page 38 Table 25 — 50PSH, PSV, PSD030 Typical Unit Operating Pressures and Temperatures FULL LOAD COOLING — WITHOUT HWG ACTIVE ENTERING WATER WATER Suction Discharge FLOW TEMP Pressure Pressure (GPM/ton) (psig) (psig) 116-126 146-166 2.25 115-125 138-158 115-125 128-148 129-139 217-237 2.25 128-138 203-223...
  • Page 39 Table 28 — 50PSH, PSV, PSD048 Typical Unit Operating Pressures and Temperatures FULL LOAD COOLING — WITHOUT HWG ACTIVE ENTERING WATER WATER Suction Discharge FLOW TEMP Pressure Pressure (GPM/ton) (psig) (psig) 108-118 180-200 2.25 107-117 161-181 107-117 142-162 123-133 236-256 2.25 122-132 218-238...

  • Page 40: Unit Start-Up With Wshp Open Controls

    BAS (Building Auto- mation System) system or provide additional capabilities to Carrier's WSHP product line. Most settings on the controller have factory defaults set for ease of installation. There are a few settings that must be configured in the field and several set- tings that can be adjusted if required by unique job conditions.

  • Page 41: Flow Regulation

    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: •...

  • Page 42: Cooling Tower/Boiler Systems

    Cooling Tower/Boiler Systems — typically use a common loop temperature maintained at 60 to 95 F. Carrier recommends using a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and the water loop. If an open type cooling tower is used continuously, chemical treatment and filtering will be necessary.

  • Page 43: Units With Hwr Option

    The WSHP Open controller has its own hardware clock that is automatically set when 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 WSHP Open multi-protocol controller.
  • Page 44 NOTE: Scheduling can either be controlled via the unit or the BAS, but not both. INDOOR FAN — The indoor fan will operate in any one of three modes depending on the user configuration selected. Fan mode can be selected as Auto, Continuous, or Always On.
  • Page 45 speed. Should this be insufficient, and the SAT rises further reaching the maximum heating SAT limit, the fan will be indexed to the maximum speed. If the SAT still continues to ° rise 5 F above the maximum limit, all heating stages will be disabled.

  • Page 46: Operation

    screen. The following conditions must be true for economizer operation: • SAT reading is available. • LWT reading is available. • If occupied, the SPT is greater than the occupied cooling set point or less than the occupied heating set point and the condenser water is suitable.

  • Page 47: Wshp Open Test Mode

    Table 35 — Complete C Control LED Code and Fault Descriptions LED CODE FAULT No fault in memory There has been no fault since the last power-down to power-up sequence High-Pressure Switch HP switch opens instantly Low-Pressure Switch LP switch opens for 30 continu- ous seconds before or during a call (bypassed for first 60 seconds)

  • Page 48: Service

    Proper water treatment can minimize tube fouling and pitting. If such conditions are anticipated, water treatment analysis is recommended. Refer to the Carrier System Design Manual, Part 5, for general water conditioning information. CAUTION Follow all safety codes.

  • Page 49: Checking System Charge

    FILL CONDENSER WITH CLEANING SOLUTION. DO NOT ADD SOLUTION MORE RAPIDLY THAN VENT CAN EXHAUST GASES CAUSED BY FUNNEL CHEMICAL ACTION. 1” PIPE VENT PIPE 5’ APPROX 3’ TO 4’ PAIL A50-6286 Fig. 36 — Gravity Flow Method GAS VENT PUMP PRIMING CONN.

  • Page 50: Wshp Open Controller

    The sensing bulb must be located on a dedicated suction line close to the compressor. On a pack- aged heat pump, the bulb may be located almost any place on the tube running from the compressor suction inlet to the reversing valve.
  • Page 51 The bulb must be secured to the pipe using a copper strap. The use of heat transfer paste between the bulb and the pipe will also help ensure optimum performance. The bulb must also be properly insulated to eliminate any influence on valve operation by the surrounding conditions.
  • Page 52 IMPORTANT: Always recover the refrigerant from the system with suitable approved tools, recovery equipment, and practices prior to attempting to remove or repair any TXV. IMPORTANT: Due to the hygroscopic nature of the POE oil in Puron refrigerant (R-410A) and other environ- mentally sound refrigerants, any component replace- ment must be conducted in a timely manner using caution and proper service procedure for these types of...
  • Page 53 a50-8448 Fig. 40 — ECM Pin Connectors...

  • Page 54: Stopped Or Malfunctioned Ecm Motor

    Refer Stopped or Malfunctioned ECM Motor — to Fig. 41 to determine the possible cause of a stopped or mal- functioned ECM motor. Follow the instructions in the boxes. a50-8447 Fig. 41 — ECM Troubleshooting Flow Diagram...

  • Page 55: Moisture Check

    To perform moisture check: Moisture Check — • Check that connectors are orientated “down” (or as recom- mended by equipment manufacturer). • Arrange harnesses with “drip loop” under motor. Check motor, controls wiring, and connections thoroughly before replac- ing motor. Orient connectors down so water cannot get in.
  • Page 56 Compressor overload Check compressor overload. Replace if necessary. Thermostat wiring Check Y and W wiring at heat pump. Jumper Y and R for compressor operation in Test mode. Thermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation.

  • Page 57: Troubleshooting

    Poor performance See “Insufficient Capacity.” Too high airflow Check blower performance per Tables 11-13. Unit oversized Recheck loads and sizing check sensible cooling load and heat pump capacity. Normal operation Check/compare with Tables 20-30. Reduced water flow Check pump operation.

  • Page 58: Appendix A - Wshp Open Screen Configuration

    APPENDIX A — WSHP OPEN SCREEN CONFIGURATION SCREEN NAME POINT NAME Operating Mode Condenser Leaving Temperature Condenser Entering Temperature Equipment Compressor Capacity Status Damper Position O Economizer Auxiliary Heat Space RH Dehumidification IAQ CO SPT Alarm Status Alarming SPT SPT Alarm Limit SPT Sensor Alarm Status IAQ Alarm Status...
  • Page 59 APPENDIX A — WSHP OPEN SCREEN CONFIGURATION (cont) PASSWORD SCREEN NAME POINT NAME Operating Mode Fan Operating Mode Occupancy Status Occupancy Control Outside Air Temperature SPT Status SPT Sensor Status Condensate Overflow Cooling Set Point Heating Set Point Unit No Password Maintenance required Set Point Adjustment...
  • Page 60 APPENDIX A — WSHP OPEN SCREEN CONFIGURATION (cont) PASSWORD SCREEN NAME POINT NAME Occupied Heating Occupied Cooling Unoccupied Heating Unoccupied Cooling Effective Heating Set Point Effective Cooling Set Point Optimal Start Configuration User/Admin Occupied RH Password level Set Point Set Points Unoccupied RH Set Point DCV CTRL Start...
  • Page 61 APPENDIX A — WSHP SCREEN OPEN CONFIGURATION (cont) PASSWORD SCREEN NAME POINT NAME Fan Mode Fan On Delay Fan Off Delay Heating Enable Cooling Enable Minimum SAT in Cooling Configuration Maximum SAT in Heating Admin Password level access only Damper Ventilation Position Unit Configuration...
  • Page 62 APPENDIX A — WSHP SCREEN OPEN CONFIGURATION (cont) SCREEN NAME POINT NAME # of Fan Speeds G Output Type Compressor Stages Reversing Valve Type Leaving Air Auxiliary Heat Type Entering Air Water Economizer Type 2-Position Water Valve Type Modulating Water Valve Type Ventilation Damper Type...

  • Page 63: Configuration

    APPENDIX A — WSHP SCREEN OPEN CONFIGURATION (cont) SCREEN NAME POINT NAME SPT Occupied Alarm Hysteresis SPT Alarm Delay SPT Unoccupied Low Alarm Temperature SPT Unoccupied High Alarm Temperature SAT Low SAT Alarm Limit SAT High SAT Alarm Limit Condensate Overflow Alarm Delay Space Humidity Occupied High Alarm Limit...
  • Page 66 Copyright 2009 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500055-01 Printed in U.S.A. Form 50PS-3SI Pg 66 7-09 Replaces: 50PS-2SI...

  • Page 67: 50Psh,Psv,Psd Start-Up

    CUSTOMER:___________________________ MODEL NO.:___________________________ 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)
  • Page 68 SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE (DEG F) *Use 500 for water, 485 for antifreeze. Copyright 2009 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500055-01 Printed in U.S.A.

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