Carrier Aquazone 50VQP 181 User Manual

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 1 10-2020 Replaces: 50HQP-VQP-2SI
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• INSPECTION
• STORAGE
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 3
• HO
RIZONTAL UNITS (50HQP)
• VERTICAL UNITS (50VQP)
• INSTALLATION GUIDELINES (ALL UNITS)
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• INSPECT UNIT
Step 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . 12
Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . 12
• MOUNTING VERTICAL UNITS
• MOUNTING HORIZONTAL UNITS
Step 5 — Check Duct System . . . . . . . . . . . . . . . . . 13
Step 6 — Install Condensate Drain . . . . . . . . . . . . . 13
Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . 14
• UNITS WITH WATERSIDE ECONOMIZER OR
BOILERLESS HEAT CONTROL
• WELL WATER SYSTEMS (50°F EWT [ENTERING
WATER TEMPERATURE] MINIMUM)
• COOLING TOWER/BOILER APPLICATION
• EARTH COUPLED SYSTEMS
Step 8 — Wire Field Power Supply . . . . . . . . . . . . . 17
• CO
NTROL TRANSFORMER SETTING FOR 208V
UNITS
• 50HQP WITH SUPPLY FAN VFD
Step 9 — Wire Control Connections . . . . . . . . . . . . 32
• COMPLETE C, AND DELUXE D CONTROL
• THERMOSTAT AND DDC SENSORS
• HOT GAS REHEAT CONTROL
• AUXILIARY RELAY (DELUXE D ONLY)
• ENERGY MANAGEMENT SWITCH (DELUXE D
ONLY)
• BOILERLESS HEAT CONTROL (DELUXE D ONLY)
• ALARM OUTPUT (ALL UNITS)
• WSHP OPEN CONTROL
• CONTROL TRANSFORMER
Step 10 — Configure Unit Control Components . . 32
• UNIT PROTECTION MODULE (UPM)
• FREEZE SENSOR
• UPM DIP SWITCH SETTINGS
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
• AIR COIL
FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . . . . 34
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
O
perating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
• ENVIRONMENT
• POWER SUPPLY
• UNIT STARTING CONDITIONS
Start Up System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Scroll Compressor Rotation . . . . . . . . . . . . . . . . . . .34
Flow Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . .38
Ground Coupled, Closed Loop and Plateframe Heat
Exchanger Well Systems . . . . . . . . . . . . . . . . . . .38
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Un
its with Aquazone™ Complete C Control . . . . . .38
• STANDBY
• COOLING
• HEATING STAGE 1
• HEATING STAGE 2
• LOCKOUT MODE
• LOCKOUT WITH EMERGENCY HEAT
• EMERGENCY HEAT
Units with Aquazone Deluxe D Control . . . . . . . . . .39
• STANDBY/FAN ONLY
• HEATING STAGE 1
• EMERGENCY HEAT
• COOLING STAGE 2
Retry Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Units with WSHP Open Controls with UPM Board . 39
• COOLING
• REVERSE CYCLE HEATING
• TWO POSITION OA DAMPER
• MODULATING OA DAMPER WITH DCV
• AUXILIARY MODULATING HOT WATER / STEAM
HEATING REHEAT
• TWO-POSITION HOT WATER/STEAM
HEATING REHEAT
• SINGLE STAGE ELECTRIC AUXILIARY HEAT
• AUTOMATIC FAN SPEED CONTROL
• FAN SPEED CONTROL - DURING HEATING
• FAN SPEED CONTROL - DURING COOLING
• MODULATING WATER ECONOMIZER CONTROL
• TWO-POSITION WATER ECONOMIZER CONTROL
• POWER FAIL RESTART DELAY
• SUPPLY AIR TEMPERATURE MONITORING/
CONTROL/ ALARM
• DEHUMIDIFICATION
• SPACE TEMPERATURE ALARMS
• CONDENSER WATER TEMPERATURE
MONITORING/CONTROL/ALARM
• HIGH CONDENSATE / OVERFLOW ALARM
• FILTER STATUS ALARM
• COMPRESSOR FAULT/LOCKOUT ALARM
Aquazone™
50HQP,VQP 072-360
Large Capacity Water Source Heat Pumps

Carrier Aquazone 50VQP 181 Specifications

General

Brand	Carrier
Model	Aquazone 50VQP 181
Category	Heat Pump
Language	English

Summary

SAFETY CONSIDERATIONS

PRE-INSTALLATION

INSPECTION

INSTALLATION

Step 2 - Check Unit

Step 3 - Locate Unit

Step 4 Mount the Unit

Instructions for mounting the unit securely and properly.

Step 5 - Check Duct System

Procedures for verifying ductwork connections and ensuring proper airflow and system operation.

Step 6 Install Condensate Drain

Instructions for correctly installing the condensate drain system to ensure proper drainage.

Step 7 - Pipe Connections

Detailed instructions for connecting water piping to the unit, including material and sealing recommendations.

Step 8 - Wire Field Power Supply

Guidance on connecting field power supply to the unit, including voltage and phasing considerations.

Step 9 - Wire Control Connections

Instructions for wiring thermostats, DDC controls, and other low-voltage connections to the unit.

Step 10 - Configure Unit Control Components

Steps for configuring the Unit Protection Module (UPM) and its associated settings.

PRE-START-UP

System Checkout

START-UP

Operating Limits

Defines the environmental and operational boundaries for unit performance and longevity.

Scroll Compressor Rotation

Procedure to verify correct scroll compressor rotation direction to prevent damage.

Antifreeze

OPERATION

Units with Aquazone™™ Complete C Control

Units with Aquazone Deluxe D Control

Units with WSHP Open Controls with UPM Board

AUTOMATIC FAN SPEED CONTROL

COMPRESSOR FAULT/LOCKOUT ALARM

Explains how the control detects compressor faults and initiates lockout procedures.

SERVICE

Checking System Charge

Steps for verifying the refrigerant charge level and related pressure/temperature readings.

TROUBLESHOOTING

ENTIRE UNIT DOES NOT RUN

BLOWER OPERATES BUT COMPRESSOR DOES NOT

UNIT OFF ON HIGH PRESSURE CONTROL

UNIT OFF ON LOW PRESSURE CONTROL

UNIT SHORT CYCLES

INSUFFICIENT COOLING OR HEATING