Page 1: Table Of Contents
Compact High-Efficiency Water Source Heat Pumps Installation, Start-Up, and Service Instructions CONTENTS SAFETY CONSIDERATIONS ....1,2 GENERAL ........2 INSTALLATION .
Page 2: General
• PCV standard efficiency with vertical airflow and top discharge 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 or an equivalent protective covering. Cap open ends of pipes stored on the jobsite. This precaution is especially important in areas where painting, plastering, or spraying of fireproof mate- rial, etc. is not yet complete. Foreign material that accumulates within the units can prevent proper start-up and necessitate costly clean-up operations.
Page 4 LEFT RETURN OPTIONAL 2 FT 2 FT [610 MM] SERVICE [610 MM] ACCESS SERVICE ACCESS FRONT LEFT RETURN RIGHT/STRAIGHT DISCHARGE BACK NOTE: CHOOSE EITHER DISCHARGE BACK OR STRAIGHT DISCHARGE BLOWER OUTLET a50-8695 LEFT RETURN BACK DISCHARGE FRONT LEFT RETURN STRAIGHT DISCHARGE LEFT RETURN LEFT VIEW - AIR COIL OPENING OVERALL CABINET...
Page 5 Field-supplied transition to minimize pressure loss Supply Air Flexible Connection Insulated supply duct with at least one 90 degree elbow Accessory to reduce air noise Electric Heat (field supplied) (if applicable) 3/8" Threaded Rod (by others) Vibration Isolator (white compressor end and red blower end) Washer (by others)
Page 6 AIR COIL AND FRONT SIDE TOP VIEW-FRONT RETURN AIR COIL SIDE TOP VIEW-RIGHT RETURN AIR COIL FRONT BACK RIGHT RETURN RIGHT VIEW - AIR COIL OPENING OVERALL CABINET WATER CONNECTIONS 50PCV UNIT SIZE Width Depth Height Loop In Loop Out 006- 19.1 19.1...
Page 7: Step 3 - Locate Unit
Supply Air Flexible Connection Return Field-supplied stainless steel braid hose with integral “ J” swivel Power Thermostat Wiring Compressor Access Panel NOTE: Ball valve with integral pressure temperature plug recommended. Fig. 4 — Typical Vertical Installation of 50PCV Unit Step 3 — Locate Unit — should be considered when choosing a location for a WSHP: •...
Page 8: Step 4 - Mount The Unit
Side to Back Discharge Conversion 1. Remove screws to free the top and discharge panels. See Fig. 5. 2. Remove the access panel and set aside. 3. Lift the discharge panel from side of unit and rotate it to back using care not to damage blower wiring. 4.
Page 9: Step 7 - Pipe Connections
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 10: Step 8 - Wire Field Power Supply
Tighten steel fittings as necessary. 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 16 A50-8697...
Page 17 A50-8698...
Page 18 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 19 RATED 50PCH,PCV VOLTAGE VOLTAGE VOLTAGE UNIT CODE MIN/MAX V-Ph-Hz* 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 265-1-60 239/292 208/230-1-60 197/254 265-1-60 239/292 208/230-3-60 197/254 460-3-60 414/506 208/230-1-60 197/254...
Page 20: Step 9 - Wire Field Controls
Step 9 — Wire Field Controls THERMOSTAT CONNECTIONS — should be wired directly to the Aquazone™ control board. See Fig. 13-20, and 22. CAPACITOR COMPLETE C CONTROL COMPRESSOR CONTACTOR TRANSFORMER a50-8197 THERMOSTAT CONNECTION NOTE: Low voltage connector may be removed for easy installation. Fig.
Page 21 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 6.
Page 22: Installation
Wiring a Supply Air Temperature (SAT) Sensor SAT sensor is required for reheat applications. If the cable used to wire the SAT sensor to the controller will be less than 100 ft, an unshielded 22 AWG (American Wire Gage) cable should be used. If the cable will be greater than 100 ft, a shield 22 AWG cable should be used.
Page 23 Table 9 — 50PCH,PCV Blower Performance — Standard Unit 50PCH, RATED SPEED AIRFLOW 1000 1200 1350 1050 1600 1200 2000 1500 NOTES: 1. Shaded areas denote ESP (external static pressure) where operation is not recommended. 2. Units factory shipped on medium speed. Other speeds require field selection.
Page 24: Field Selectable Inputs
2, W1 is used for heating stage 1 and O/W2 is used for heating stage 2. Select ON for heat pump applications. 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 RV (heating or cooling) depending upon switch 4 setting.
Page 25: Deluxe D Control Accessory Relay
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 first, then the heating cycle. Refer to Table 13 for unit operating limits. Al- low 15 minutes between cooling and heating tests for pressure to equalize.
Page 26: Scroll Compressor Rotation
Table 13 — Operating Limits — 50PCH,PCV Units OPERATING LIMITS COOLING (F) AIR LIMITS Min. Ambient Air – db Rated Ambient Air – db 80.6 Max. Ambient Air – db Min. Entering Air – db/wb Rated Entering Air – db/wb 80.6/66.2 Max.
Page 27 Table 15 — 50PC006 Typical Unit Operating Pressures and Temperatures ENTERING WATER WATER Suction Discharge FLOW TEMP Pressure Pressure (GPM/ton) (psig) (psig) 124-134 159-179 2.25 120-130 147-167 117-127 136-156 132-142 210-230 2.25 131-141 199-219 130-140 189-209 136-146 275-295 2.25 136-146 262-282 135-145 250-270...
Page 28 Table 18 — 50PC015 Typical Unit Operating Pressures and Temperatures ENTERING WATER WATER Suction Discharge FLOW TEMP Pressure Pressure (GPM/ton) (psig) (psig) 116-126 167-187 2.25 116-126 154-174 116-126 140-160 128-138 194-214 2.25 128-138 180-200 128-138 166-186 136-146 289-309 2.25 136-146 275-295 136-146 261-281...
Page 29 Table 21 — 50PC030 Typical Unit Operating Pressures and Temperatures ENTERING WATER WATER Suction Discharge FLOW TEMP Pressure Pressure (GPM/ton) (psig) (psig) 113-123 188-208 2.25 114-124 177-197 114-124 166-186 124-134 248-268 2.25 124-134 233-253 124-134 218-238 132-142 333-353 2.25 132-142 313-333 132-142 293-313...
Page 30: Unit Start-Up Heating Mode
BAS (Building Automation 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 settings that can be adjusted if required by unique job condi- tions.
Page 31 To start-up a unit with WSHP Open controls: 1. To plug in the BACview handheld display into a SPT sensor, point the two ears on the connector up and tilt the bottom of the plug toward you. Insert the plug up into the SPT sensor while pushing the bottom of the plug away from you.
Page 32: Flow Regulation
13 F) set point to avoid nuisance faults. Cooling Tower/Boiler Systems — ically use a common loop temperature maintained at 60 to 90 F. Carrier recommends using a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and 50 F...
Page 33: Operation
the water loop. If an open type cooling tower is used continu- ously, chemical treatment and filtering will be necessary. Table 27 — Approximate Fluid Volume (gal.) per 100 Ft of Pipe PIPE DIAMETER (in.) Copper 1.25 Rubber Hose Polyethylene IPS SDR11 1 IPS SDR11 IPS SDR11...
Page 34 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 35 of capacity. Likewise, a 45-second delay is used when staging down. After a compressor is staged off, it may be restarted again after a normal time-guard period of 5 minutes and if the supply-air temperature has increased above the minimum supply-air temperature limit.
Page 36: Complete C And Deluxe D Board
• 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, minimum damper position, and DCV maximum damper position. Two-Position OA Damper —...
Page 37: Retry Mode
stage 2 followed by heating stage 2 then reduces capacity to heating stage 1. Operates for 1 minute per step. DEHUMIDIFICATION TEST — Tests dehumidification mode. Operates for 2 minutes. AUXILIARY HEATING TEST — Tests Sequences fan on and enables heating coil for 1 minute. O ECONOMIZER TEST —...
Page 38: Service
Table 31 — Aquazone Deluxe D Control Current LED Status and Alarm Relay Operations DESCRIPTION Normal Mode Normal Mode with PM Deluxe D Control is non-functional Test Mode Night Setback Flashing Code 2 Flashing Code 3 Invalid T-stat Inputs Flashing Code 4 No Fault in Memory HP Fault LP Fault...
Page 39: Air Coil Cleaning
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 40: Air Coil Fan Motor Removal
Air Coil Fan Motor Removal CAUTION Before attempting to remove fan motors or motor mounts, place a piece of plywood over evaporator coils to prevent coil damage. Disconnect motor power wires from motor terminals before motor is removed from unit. 1.
Page 41 Ensure thermostat set for heating or cooling operation. Unit locked out Check for lockout codes. Reset power. 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. SOLUTION...
Page 42 POSSIBLE CAUSE Thermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation. Check Y and W wiring at heat pump. Jumper Y and R for compressor oper- ation in test mode. Fan motor relay Jumper G and R for fan operation. Check for line voltage across BR contacts.
Page 43 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 44: Appendix A - Wshp Open Screen
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 45: Configuration
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 46 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 47 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 48 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 50 Copyright 2011 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500094-01 Printed in U.S.A. Form 50PC-3SI Pg 50 3-11 Replaces: 50PC-2SI...
Page 51: 50Pch,Pcv Start-Up Checklist
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 52 SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE (DEG F) *Use 500 for water, 485 for antifreeze. Copyright 2011 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500094-01...

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