Page 1: Table Of Contents
Aquazone™ 50HQP,VQP 072-360 Large Capacity Water Source Heat Pumps Installation, Start-Up, and Service Instructions CONTENTS Operating Limits ......34 •...
Page 2: Safety Considerations
• INSUFFICIENT VENTILATION ALARM • RELATIVE HUMIDITY ALARM WARNING • TIME SCHEDULES • HOLIDAY SCHEDULES Electrical shock can cause personal injury or death. Before • OVERRIDE SCHEDULES installing or servicing system, always turn off main power to SERVICE ........43 system.
Page 3: Pre-Installation
8. Provide an unobstructed path to the unit within the closet PRE-INSTALLATION or mechanical room. Space should be sufficient to allow INSPECTION return air to freely enter the space. Upon receipt of shipment, carefully check the shipment against 9. Provide ready access to water valves and fittings, and the bill of lading.
Page 4 Open, verify proper sensor has been provided and a commis- on the pallet with the unit). See Fig. 1 for VFD shipping box sioning interface will be available. location. If VFD is not found, contact your Carrier sales representative. ELECTRICAL...
Page 5 Table 1 — 50HQP,VQP Unit Physical Data 50HQP,VQP UNIT SIZE Scroll Compressor Type 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 6 SUPPLY AIR RETURN AIR CONDENSER WATER CONNECTIONS 50HQP REPLACEMENT (Blower Outlets) UNIT HEIGHT WIDTH DEPTH* FILTER SIZE DIAMETER SIZE (NOMINAL) (FPT) 21.50 38.00 78.00 2.00 20.50 18.50 28.00 2.75 28.00 14.50 15.50 13.50 10.50 20 x 34 21.50 38.00 78.00 2.00 20.50 18.50...
Page 7 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 8 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 REAR SUPPLY TOP SUPPLY TOP SUPPLY REAR RETURN...
Page 9 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 REAR SUPPLY CONNECTIONS TOP SUPPLY TOP SUPPLY REAR RETURN...
Page 10 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 REAR SUPPLY TOP SUPPLY CONNECTIONS REAR RETURN...
Page 11 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 12: Step 3 - Locate Unit
All 50VQP units should be vibration isolated according to the de- sign engineers’ specifications. CAUTION DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., at- tics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life.
Page 13: Step 5 - Check Duct System
Fig. 10 — Typical Fan Discharge Connections for Multiple Fan Units Refer to the Carrier System Design Manual or ASHRAE (American Society of Heating, Refrigerating and Air-Condition- ing Engineers) standards for the recommended duct connection to unit with 2 fans.
Page 14: Step 7 - Pipe Connections
overtighten the connections. Flexible hoses should be used be- tween the unit and the rigid system to avoid possible vibration. Ball valves should be installed in the supply and return lines for unit isolation and unit water flow balancing. Pressure/temperature ports are recommended in both the supply and return lines for system flow balancing.
Page 15 WELL WATER APPLICATIONS (50°F EWT MIN.) LINE VOLTAGE DISCONNECT FLEX DUCT CONNECTION LOW VOLTAGE CONTROL CONNECTION LINE VOLTAGE CONNECTION VIBRATION PAD P/T PORTS HOSE KITS (Optional) BALL VALVES SOLENOID VALVE SLOW CLOSING CONDENSATE DRAIN CONNECTION PRESSURE TANK (Optional) Fig. 13 — Well Water Applications...
Page 16: Cooling Tower/Boiler Application
COOLING TOWER/BOILER APPLICATION is eliminated from the closed loop side of the heat exchanger to prevent condenser fouling. In the heating mode, heat is absorbed To ensure adequate cooling and heating performance, the cooling from the water loop to the unit. A boiler can be utilized to maintain tower and boiler water loop temperature should be maintained be- the loop within the proper temperature range.
Page 17: Earth Coupled Systems
EARTH COUPLED SYSTEMS 50HQP WITH SUPPLY FAN VFD Operation of a unit on a closed loop application requires the ex- Units with the SAV or single speed VFD option include a VFD tended range option. See Fig. 15. that ships inside the unit control enclosure for field installation. See Fig.
Page 18 Fig. 15 — Earth Coupled Applications COMPRESSORS, REFRIGERATION COMPONENTS ACCESS CONTROLS, COMPRESSORS ACCESS CONDENSATE DRAIN ELECTRICAL BOX ELECTRICAL CONNECTIONS Fig. 16 — Electrical Control Box Location, 50HQP Units...
Page 19 Fig. 17 — VFD Input and Output Power Connections, 50HQP Units Table 2 — 50HQP072-242 Electrical Data COMPRESSOR (x2) BLOWER MOTOR 50HQP UNIT VOLTAGE MIN CIRCUIT MAX FUSE/ SIZE (V-Ph-Hz) AMPS HACR 208/230-1-60 16.7 79.0 44.6 208/230-3-60 10.4 73.0 27.0 460-3-60 38.0 14.9...
Page 20 Table 3 — 50VQP072-360 Electrical Data COMPRESSOR (x2) BLOWER MOTOR VOLTAGE MIN CIRCUIT MAX FUSE/ 50VQP UNIT SIZE (V-Ph-Hz) AMPS HACR 208/230-1-60 16.7 79.0 44.6 208/230-3-60 10.4 73.0 27.0 460-3-60 38.0 14.9 208/230-1-60 19.6 130.0 52.6 208/230-3-60 13.7 83.1 35.6 460-3-60 41.0 16.4...
Page 21 Fig. 18 — Single-Phase Complete C Control Package...
Page 22 Fig. 19 — Single-Phase Deluxe D Control Package...
Page 23 Fig. 20 — Single-Phase with WSHP Open...
Page 24 Fig. 21 — 3-Phase Complete C Control Package...
Page 25 Fig. 22 — 3-Phase Deluxe D Control Package...
Page 26 Fig. 23 — 3-Phase with WSHP Open...
Page 27 Fig. 24 — 3-Phase Complete C Control Package with Hot Gas Reheat...
Page 28 Fig. 25 — 3-Phase Deluxe D Control Package with 1-Speed VFD and Hot Gas Reheat...
Page 29 Fig. 26 — 3-Phase with WSHP Open, Hot Gas Reheat, Water Economizer, and SAV...
Page 30 Fig. 27 — 3-Phase Complete C Board with Water Economizer...
Page 31 Fig. 28 — WSHP Open W2A Wiring Diagram...
Page 32: Step 9 - Wire Control Connections
WSHP OPEN CONTROL 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 33: Freeze Sensor
Fig. 31 — Typical DIP Switch Factory Defaults Table 4 below shows the available options on the UPM board DIP switch banks. Table 4 — UPM DIP Switch Options SWITCH DIP SWITCH NUMBER LOCKOUT RESET Board Power Indicator ALARM CONT PULSE UPM Status LED Indicator TEST...
Page 34: Air Coil
AIR COIL 6. Leave the unit off for approximately (5) minutes to allow for system equalization. To obtain maximum performance, the air coil should be cleaned 7. Turn the thermostat to the lowest setting. before starting the unit. A 10% solution of dishwasher detergent 8.
Page 35 Table 6 — 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 36 Table 6 — 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/ton) SIZE...
Page 37: Flow Regulation
Table 6 — 50HQP,VQP Typical Unit Operating Pressures and Temperatures (cont) COOLING HEATING 50HQP, ENTERING WATER Water Water 50VQP WATER Suction Discharge Air Temp Suction Discharge Air Temp FLOW Temp Temp UNIT TEMP Pressure Pressure Drop Pressure Pressure Rise (GPM/ton) Rise Drop SIZE...
Page 38: Antifreeze
After pressurization, be sure to remove the plug from the end Ground Coupled, Closed Loop and Plateframe of the loop pump motor(s) to allow trapped air to be discharged Heat Exchanger Well Systems and to ensure the motor housing has been flooded. Be sure These systems allow water temperatures from 30 to 110°F.
Page 39: Units With Aquazone Deluxe D Control
REVERSE CYCLE HEATING Units with Aquazone Deluxe D Control The control will operate 1 or 2 stages of compression to maintain STANDBY/FAN ONLY the desired heating setpoint. To reduce noise, the control operates The compressor will be off. The Fan Enable, Fan Speed, and re- the fan at the lowest speed possible.
Page 40: Single Stage Electric Auxiliary Heat
SINGLE STAGE ELECTRIC AUXILIARY HEAT HEATING Additionally, the control will modulate the water valve should the The control can operate a single stage of electric heat connected to entering water loop temperature be suitable for heating (at least a coil on the discharge side of the unit in order to maintain the de- 5°F above space temperature) and heat is required.
Page 41: Dehumidification
DEHUMIDIFICATION COMPRESSOR FAULT/LOCKOUT ALARM The control can monitor the space relative humidity and if the unit The control will monitor a discrete input to determine the com- is equipped with the factory installed hot gas reheat, whenever the pressor state. Should the input state not match the desired com- humidity exceeds the appropriate (occupied or unoccupied) hu- pressor operating state for greater than 6 minutes, the control as- midity setpoint and if the unit is not heating or cooling, the control...
Page 42 WSHP Open Controls with UPM Board Fig. 32 —...
Page 43 Proper water treatment can minimize tube fouling and pitting. If CAUTION such conditions are anticipated, water treatment analysis is recom- mended. Refer to the Carrier System Design Manual, Part 5, for To avoid the release of refrigerant into the atmosphere, the general water conditioning information.
Page 44 FORCED CIRCULATION METHOD Air Coil Fan Motor Removal Fully open vent pipe when filling condenser. The vent may be closed when condenser is full and pump is operating. See Fig. 34. CAUTION Regulate flow to condenser with a supply line valve. If pump is a Before attempting to remove fan motors or motor mounts, non-overloading type, the valve may be fully closed while pump place a piece of plywood over evaporator coils to prevent coil...
Page 45 Table 9 — Troubleshooting PROBLEM POSSIBLE CAUSE SOLUTION Power supply off Apply power, close disconnect Blown fuse Replace fuse or reset circuit breaker. Check for correct fuses. Voltage supply low If voltage is below minimum voltage specified on unit data plate, contact local power company.
Page 46 © 2020 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500286-01 Printed in U.S.A. Form 50HQP-VQP-4SI Pg 46 10-2020 Replaces: 50HQP-VQP-2SI...
Page 47 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 Instructions.
Page 48 SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE = _____ (DEG F) *Use 500 for water, 485 for antifreeze. © 2020 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Carrier Aquazone 50HQP Series Installation, Start-Up And Service Instructions Manual

Safety Considerations

General

Pre-Installation

Installation

Step 1 - Check Jobsite

Step 2 - Check Unit

Step 3 - Locate Unit

Step 4 - Mount the Unit

Step 5 - Check Duct System

Step 6 - Install Condensate Drain

Step 7 - Pipe Connections

Step 8 - Wire Field Power Supply

Step 9 - Wire Control Connections

Pre-Start-Up

System Checkout

Field Selectable Inputs

Start-Up

Operating Limits

Start up System

Scroll Compressor Rotation

Flow Regulation

Flushing

Antifreeze

Cooling Tower/Boiler Systems

Ground Coupled, Closed Loop and Plateframe Heat Exchanger Well Systems

Operation

Power up Mode

Units with Aquazone™ Complete C Control

Units with Aquazone Deluxe D Control

Retry Mode

Units with WSHP Open Controls with UPM Board

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