Page 1: Table Of Contents
Aquazone™ 50HQP,VQP 072-360 Large Capacity Water Source Heat Pumps Installation, Start-Up, and Service Instructions CONTENTS Step 10 — Configure Unit Control Components . . .41 • UNIT PROTECTION MODULE (UPM) Page • WATER SIDE ECONOMIZER OPTION SAFETY CONSIDERATIONS ....2 •...
Page 2: Safety Considerations
• FAN SPEED CONTROL - DURING HEATING available. Read these instructions thoroughly and follow all • FAN SPEED CONTROL - DURING COOLING warnings or cautions attached to the unit. Consult local building • MODULATING WATER ECONOMIZER CONTROL codes and the National Electrical Code (NEC) for special •...
Page 3: Installation
Vertical units are designed for indoor installations only. Vertical service, installation, and removal in accordance with Carrier’s units are typically installed in a floor-level mechanical room or in recommended service clearance and installation instructions.
Page 4 Table 1 — 50HQP and 50VQP Unit Physical Data 50HQP,VQP UNIT SIZE Compressor Type Scroll Scroll Scroll Scroll Scroll Scroll Quantity Total Refrigerant Charge (lb) Vert/Horiz 9.88/9.13 10/11.25 12.38 13.38 15.88 Air Coil Dimensions (in.) H x L (Qty) 20 x 32.5 (2) 20 x 32.5 (2) 20 x 32.5 (2) 24 x 65 (1)
Page 5 66.00 HEIGHT 3.00 4.50 2.00 RETURN DEPTH 1.00 WIDTH 1.50 MOUNTING HOLES ELECTRICAL BOX 5/8 IN. DIAMETER CONDENSATE DRAIN 1 ELECTRICAL CONNECTIONS 072, 096, 120, AND 150 LEFT RETURN, RIGHT DISCHARGE RETURN RETURN CONDENSER WATER OUT 5.50 CONDENSER WATER OUT CONDENSER WATER IN CONDENSATE...
Page 6 3.00 7.00 3.00 1.50 1.00 4.00 MOUNTING HOLES 1 IN. DIAMETER MOUNTING BRACKET SECTION VIEW RETURN CONDENSER WATER OUT 67.00 HEIGHT RETURN DEPTH CONDENSER WIDTH WATER IN CONDENSATE ELECTRICAL BOX DRAIN 1 CONDENSATE DRAIN 2 ELECTRICAL CONNECTIONS BLOWER MOTOR ORIENTATION LEFT RETURN, RIGHT DISCHARGE LEFT RETURN, RIGHT DISCHARGE SUPPLY AIR...
Page 7 FRONT RETURN OPTIONAL STANDARD BLOWER BLOWER ORIENTATION ORIENTATION RETURN 20.00 9.00 24.00 RETURN 34.00 34.00 6.00 2.00 28.00 7.00 17.50 RETURN HEIGHT CONDENSER WATER OUT CONDENSATE DRAIN CONDENSER WATER IN BLOWER MOTOR ORIENTATION 22.00 22.00 32.00 42.00 ELECTRICAL CONNECTIONS TOP SUPPLY TOP SUPPLY REAR SUPPLY REAR RETURN...
Page 8 FRONT RETURN OPTIONAL BLOWER RETURN ORIENTATION STANDARD BLOWER 17.50 20.00 24.00 ORIENTATION 44.25 44.25 5.00 2.00 28.00 17.50 12.12 70.00 CONDENSER WATER OUT CONDENSATE DRAIN 50.00 CONDENSER WATER IN BLOWER MOTOR 32.00 22.00 ORIENTATION 22.00 52.50 ELECTRICAL CONNECTIONS REAR SUPPLY TOP SUPPLY TOP SUPPLY REAR RETURN...
Page 9 FRONT RETURN OPTIONAL BLOWER STANDARD BLOWER ORIENTATION ORIENTATION 6.00 9.00 20.00 24.00 34.00 14.00 2.00 4.50 28.00 34.00 17.50 10.00 28.00 7.00 CONDENSER WATER OUT CONDENSATE DRAIN CONDENSER WATER IN HEIGHT BLOWER MOTOR ORIENTATION 80.00 32.00 22.00 ELECTRICAL CONNECTIONS REAR SUPPLY TOP SUPPLY OPTIONAL BLOWER REAR RETURN...
Page 10 50HQP072-150 UNITS SERVICE CLEARANCES Electrical Air Coil Control Electrical/Compressor Access 36" Minimum Blower Access 24" Minimum (072, 096, 150) 36" Minimum (120) Blower Blower Compressors Motor Compressor/Refrigerant Access 36" Minimum 50HQP180-242 UNITS SERVICE CLEARANCES Compressor/Refrigerant Access 36" Minimum Electrical Air Coil Control Blower Blower...
Page 11 FILTER WIDTH (in.) HEIGHT (in.) WEIGHTS (lb) RACK (in.) Model 50VQP072 50VQP096 50VQP120 50VQP151 52.50 50VQP181 52.50 LEGEND AH — Air Handler Section CS — Condensing Section Fig. 8 — 50VQP072-181 Units Take Apart Construction...
Page 12 FILTER WIDTH (in.) HEIGHT (in.) WEIGHTS (in.) RACK (in.) Model 50VQP210 50VQP240 50VQP300 1155 50VQP360 LEGEND AH — Air Handler Section CS — Condensing Section Fig. 9 — 50VQP210-360 Units Take Apart Construction...
Page 13: Step 2 - Check Unit
• If the unit is located in a confined space such as a closet, pro- Step 2 — Check Unit visions must be made for return air to freely enter the space. Upon receipt of shipment at the jobsite, carefully check the ship- •...
Page 14: Step 4 - Mount The Unit
power terminal U1, V1, W1 to be connected to the TB2 ter- minals. See Fig. 11 and 12 for further details. Install internal refrigerant pipes and external water pipes (if unit has water side economizer). These pre-cut components are shipped loose internal to the unit. Unit is shipped with pressurized nitrogen, after field installa- tion is complete charge the unit according to the unit's data plate.
Page 15: Mounting Horizontal Units
MOUNTING HORIZONTAL UNITS Refer to ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) standards for the recommended While horizontal units may be installed on any level surface strong duct connection to units with 2 fans. An adequate straight length enough to hold their weight, they are typically suspended above a of ducting from the unit should be allowed before elbows are in- ceiling by threaded rods.
Page 16: Step 7 - Pipe Connections
Should your well driller ex- stream, pond, etc.). press concern regarding the quality of the well water available or should any known hazards exist in your area, Carrier recommends COOLING TOWER/BOILER APPLICATION proper testing to assure the well water quality is suitable for use To ensure adequate cooling and heating performance, the cooling with water source equipment.
Page 17 Table 2 — Water Quality Guidelines CLOSED CONDITION OPEN LOOP AND RECIRCULATING WELL MATERIAL RECIRCULATING 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 pH <...
Page 18: Earth Coupled Systems
Fig. 17 — Cooling Tower/Boiler Application EARTH COUPLED SYSTEMS required voltage and phasing shown on the unit nameplate. Oper- ating the unit below the minimum voltage, above the maximum Operation of a unit on a closed loop application requires the ex- voltage or with incorrect phasing can result in poor system perfor- tended range option.
Page 19: 50Hqp With Supply Fan Vfd
50HQP WITH SUPPLY FAN VFD Units with the SAV or single speed VFD option include a VFD that ships loose for field installation. See Fig. 21 for field power wiring for VFD. Use the following guidance for VFD installation: NOTE: Installation must adhere to local codes and requirements. Remove the VFD from the unit shipping storage location.
Page 20 COMPRESSORS, REFRIGERATION COMPONENTS ACCESS CONTROLS, COMPRESSORS ACCESS CONDENSATE DRAIN ELECTRICAL BOX ELECTRICAL CONNECTIONS Fig. 20 — Electrical Control Box Location, 50HQP Units Fig. 21 — VFD Input and Output Power Connections, 50HQP Units...
Page 21 Fig. 22 — Single-Phase Complete C Control Package...
Page 22 Fig. 23 — Single-Phase Deluxe D Control Package...
Page 23 Fig. 24 — Single-Phase with WSHP Open...
Page 24 50HQPV322065 Rev. 4 Fig. 25 — 3-Phase Complete C Control Package...
Page 25 50HQPV322045 Rev. 2 Fig. 26 — 3-Phase Complete C with WSE / HGRH / 1-Speed VFD...
Page 26 50HQPV322069 Rev. 2 Fig. 27 — 3-Phase Complete C with WSE / HGRH / SAV VFD...
Page 27 Fig. 28 — 3-Phase Deluxe D Control Package...
Page 28 50HQPV322049 Rev. 2 Fig. 29 — 3-Phase Deluxe D with WSE / HGRH / 1-Speed VFD...
Page 29 50HQPV322072 Rev. 2 Fig. 30 — 3-Phase Deluxe D with WSE / HGRH / SAV VFD...
Page 30 Fig. 31 — 3-Phase with WSHP Open...
Page 31 50HQPV322050 Rev. 6 Fig. 32 — Three-Phase with WSHP Open/ HGRH / WSE / 1-Speed VFD...
Page 32 50HQPV322022 Rev. 5 Fig. 33 — 3-Phase with WSHP Open, HGRH, WSE, and SAV VFD...
Page 33 Fig. 34 — 3-Phase WSHP Open W2A Wiring Diagram...
Page 34 Table 3 — 50HQP072-242 Standard Duty Motor (No VFD) Electrical Data COMPRESSOR (x2) BLOWER MOTOR 50HQP UNIT VOLTAGE VOLTAGE MIN CIRCUIT MAX FUSE/ SIZE (V-Ph-Hz) MIN/MAX AMPS HACR 208/230-1-60 197/253 16.7 79.0 44.6 208/230-3-60 197/253 10.4 73.0 27.0 460-3-60 414/506 38.0 14.9 208-230/1/60...
Page 35 Table 4 — 50VQP072-360 Standard Duty Motor (No VFD) Electrical Data COMPRESSOR BLOWER MOTOR 50VQP UNIT VOLTAGE VOLTAGE MIN CIRCUIT MAX FUSE/ SIZE (V-Ph-Hz) MIN/MAX AMPS HACR 208/230-1-60 197/253 16.7 79.0 44.6 208/230-3-60 197/253 10.4 73.0 27.0 460-3-60 414/506 38.0 14.9 208/230-1-60 197/253...
Page 36 Table 4 — 50VQP072-360 Standard Duty Motor (No VFD) Electrical Data(cont) COMPRESSOR BLOWER MOTOR 50VQP UNIT VOLTAGE VOLTAGE MIN CIRCUIT MAX FUSE/ SIZE (V-Ph-Hz) MIN/MAX AMPS HACR 208/230-3-60 197/253 48.1 245.0 124.2 460-3-60 414/506 18.6 125.0 49.7 575-3-60 518/632 14.7 100.0 40.5 208/230-3-60...
Page 37 Table 5 — 50HQP072-242, Inverter Duty Motor (With VFD) Electrical Data COMPRESSOR (X2) BLOWER MOTOR 50HQP UNIT VOLTAGE VOLTAGE MIN CIRCUIT MAX FUSE/ SIZE (V-Ph-Hz) MIN/MAX AMPS HACR 208-230/3/60 197/253 10.4 73.0 29.6 460/3/60 414/506 38.0 16.2 208-230/3/60 197/253 10.4 73.0 32.2 460/3/60...
Page 38 Table 6 — 50VQP072-360, Inverter Duty Motor (with VFD) Electrical Data COMPRESSOR (X2) BLOWER MOTOR 50VQP UNIT VOLTAGE VOLTAGE MIN CIRCUIT MAX FUSE/ SIZE (V-Ph-Hz) MIN/MAX AMPS HACR 208-230/3/60 197/253 10.4 73.0 29.6 460/3/60 414/506 38.0 16.2 208-230/3/60 197/253 10.4 73.0 32.2 460/3/60...
Page 39: Step 9 - Wire Control Connections
C O Y WSHP Open is a factory installed DDC control that requires the use of Carrier ZS or WS sensors or the Carrier Equipment Touch or System Touch for space temperature sensing. WSHP Open is not compatible with thermostats or third party temperature sen- sors.
Page 40 Fig. 37 — SAV VFD Field Control Wiring (50HQP Only) Fig. 36 — 1-Speed VFD Field Control Wiring (50HQP Only)
Page 41: Step 10 - Configure Unit Control Components
Figure 39 shows the factory default settings for most heat pump Step 10 — Configure Unit Control Components applications. However, the unit wiring diagram is the ultimate UNIT PROTECTION MODULE (UPM) guide for factory DIP switch default settings. All units with Complete C, Deluxe D, or WSHP Open are factory See the Unit Protection Module section in the Troubleshooting provided with a unit protection module.
Page 42 VFD Field Programming (50HQP Only) When horizontal units are ordered with either the single speed VFD option or two speed SAV VFD option the VFD will need to be programmed in the field. See Tables 8 and 9 for the factory default VFD programming parameters for both options.
Page 43 Table 8 — Single Speed VFD Programming Parameters (cont) GROUP PARAMETER NUMBER DESCRIPTION VALUE NUMBER 31.24 Stall function No action 31.27 Stall frequency limit 18 Hz 31.28 Stall time 20 s 31.20 Earth fault Fault 31.14 Number of trials 31.15 Total trials time 30.0 s 31.16...
Page 44 Table 9 — Two Speed SAV VFD Programming Parameters GROUP PARAMETER NUMBER DESCRIPTION VALUE NUMBER 10.24 RO1 source Damper control 10.27 RO2 source Running 10.30 RO3 source Fault (-1) 12.16 AI1 Filter Time 0.100 s 12.17 AI1 min 12.18 AI1 max 10 V 12.19 AI1 scaled at AI1 min...
Page 45: Pre-Start-Up
Table 9 — Two Speed SAV VFD Programming Parameters (cont) GROUP PARAMETER NUMBER DESCRIPTION VALUE NUMBER 40.32 Set 1 gain 40.33 Set 1 integration time 10.0 s 40.31 Set1 deviation inversion Not inverted (Ref – Fbk) 40.79 Set 1 units User text 40.16 Set 1 setpoint 1 source...
Page 46: Alignment
Remove any rust-preventive coating on the fan shaft. Loosen fan pulley setscrews. Slide fan pulley along fan shaft. Make sure the shaft is clean and free of burrs. Add grease or lubricant to bore of sheave before installing. Make angular alignment by loosening motor from mounting plate.
Page 47: System Flushing And Filling
PVC flush tank, the level drop will only be 1 to 2 in. since liq- System Flushing and Filling uids are incompressible. If the level drops more than this, Once the piping is complete, units require final purging and loop flushing should continue since air is still being compressed in charging.
Page 48: System Flow
System Flow Table 11 — Antifreeze Percentages by Volume FLOW VERIFICATION MINIMUM TEMPERATURE FOR FREEZE PROTECTION (°F) ANTIFREEZE The WSHP units do not include a factory flow switch as standard. It is recommended to field install a flow switch or special order a flow switch as factory installed to prevent the compressor from Methanol (%) operating without loop flow.
Page 49: Start Up Procedure
SCROLL COMPRESSOR ROTATION Start Up Procedure It is important to be certain compressor is rotating in the proper di- rection. To determine whether or not compressor is rotating in the WARNING proper direction: When the disconnect switch is closed, high voltage is present Connect service gauges to suction and discharge pressure in some areas of the electrical panel.
Page 50 Table 13 — 50HQP,VQP Typical Unit Operating Pressures and Temperatures COOLING HEATING 50HQP, ENTERING WATER 50VQP WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLOW UNIT TEMP Pressure Pressure Rise Drop Pressure Pressure Drop Rise (GPM/ton) SIZE (psig)
Page 51 Table 13 — 50HQP,VQP Typical Unit Operating Pressures and Temperatures (cont) COOLING HEATING 50HQP, ENTERING WATER 50VQP WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLOW UNIT TEMP Pressure Pressure Rise Drop Pressure Pressure Drop Rise (GPM) SIZE...
Page 52: Operation
Table 13 — 50HQP,VQP Typical Unit Operating Pressures and Temperatures (cont) COOLING HEATING 50HQP, ENTERING WATER 50VQP WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLOW UNIT TEMP Pressure Pressure Rise Drop Pressure Pressure Drop Rise (GPM) SIZE...
Page 53 START RESET ON R RESET ON Y1 = ON R = 24VAC POWER/ SWITCHES/SENSOR CLEAR FAULTS STATUS CHECK BLINK CODE ON STATUS LED SOFT LOCKOUT COUNTER V > 18VAC RECORD ALARM NEEDED? START COUNTER (IF APPLICABLE) CNT = CNT+1 HPC = CLOSED LOCKOUT CAN BE SET COUNT = 2...
Page 54: Units With Complete C Or Deluxe D Controls
enable/disable field installed flow control valves or circulator Units with Complete C or Deluxe D Controls pumps. When there is no call for cooling, heating, or dehumidifi- STANDBY cation, pump/valve relay is disabled. Y and W terminals are not active in Standby mode. However, the Units with WSHP Open Controls O and G terminals may be active, depending on the application.
Page 55 Fig. 45 — WSHP Open Controls with UPM Board...
Page 56 AUXILIARY MODULATING HOT WATER / STEAM  MODULATING WATER ECONOMIZER CONTROL HEATING REHEAT The control has the capability to modulate a water valve to control condenser water flowing through a coil on the entering air side of The control can modulate a hot water or steam valve connected to the unit.
Page 57 (SAT) and verify it is within limits. During cooling, the control timer limit. The control monitors the fan output and if the fan is will increase fan speed and reduce compressor stages should the operating at any speed, it accumulates run time. Should the fan run SAT approach the Maximum Cooling SAT limit.
Page 58 Refer to the Carrier System Design Manual, Part 5, for Always keep lines airtight. general water conditioning information.
Page 59 Clean condensers with an inhibited hydrochloric acid solution. Checking System Charge The acid can stain hands and clothing, damage concrete, and, Units are shipped with full operating charge. If recharging is without inhibitor, damage steel. Cover surroundings to guard necessary: against splashing.
Page 60 TROUBLESHOOTING When troubleshooting problems with a WSHP, consider the fol- lowing and see Table 15: UNIT PROTECTION MODULE (UPM) Each unit is factory provided with a UPM board that controls the compressor operation and monitors the safeties. The UPM board should be one of the first areas to start with troubleshooting an equipment issue.
Page 61 Freeze Protection Sensors 1 and 2 (FP1 and FP2) Refer to Table 14 for freeze protector sensors 1 and 2 fault code usage. Table 14 — Freeze Protection Sensors 1 and 2 (FP1 and FP2) FAULT FAULT CRITERIA BLINKS None All fault conditions nominal.
Page 62 Selectable Alarm Mode valve and an opposing pressure, usually from a diaphragm, to open the valve. The amount of pressure exerted by the diaphragm The UPM board can be configured to have either a constant or will vary, depending on the pressure inside of the sensing bulb. As pulse signal.
Page 63 Causes of TXV Failure Refrigerant pressure-temperature chart for the refrigerant used. The most common causes of TXV failure are: To determine that a TXV has failed, verify the following: A cracked, broken, or damaged sensing bulb or capillary can be caused by excessive vibration of the capillary during ship- The suction pressure is low and the valve is non-responsive.
Page 64 IMPORTANT: Repair of any sealed refrigerant system requires CAUTION training in the use of refrigeration tools and procedures. Repair should only be attempted by a qualified service technician. A Puron ® refrigerant (R-410A) requires the use of synthetic universal refrigerant handling certificate will be required. Local lubricant (POE oil).
Page 65 Table 15 — Troubleshooting PROBLEM POSSIBLE CAUSE SOLUTION Power supply off Apply power, close disconnect Blown fuse Replace fuse or reset circuit breaker. Check for correct fuses. If voltage is below minimum voltage specified on unit data plate, contact local Voltage supply low power company.
Page 66 8733838652 © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500376-01 Printed in U.S.A. Form 50HQP-VQP-7SI Pg 66 7-23 Replaces: 50HQP-VQP-6SI...
Page 67 50HQP,VQP START-UP CHECKLIST (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or prop- erty when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up and Service Instructions.
Page 68 SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE = _____ (DEG F) *Use 500 for water, 485 for antifreeze. 8733838652 © 2023 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500376-01 Printed in U.S.A.

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Carrier Aquazone VQP 072 Installation, Start-Up And Service Instructions Manual

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