Table of Contents
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• INSPECTION
• STORAGE
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 2
• HORIZONTAL UNITS (50PCH)
• VERTICAL UNITS (50PCV)
• INSTALLATION GUIDELINES (ALL UNITS)
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• INSPECT UNIT
Step 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . . 8
• PROTECTION
Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . 8
• DUCT FLANGES
• HORIZONTAL UNITS (50PCH)
• VERTICAL UNITS (50PCV)
Step 5 — Check Duct System . . . . . . . . . . . . . . . . . . 9
• HORIZONTAL SUPPLY AIR CONFIGURATION
CONVERSION
Step 6 — Install Condensate Drain . . . . . . . . . . . . . 10
Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . 10
• WATER LOOP APPLICATIONS
• GROUND LOOP APPLICATIONS
• INSTALLING SUPPLY AND RETURN HOSE KIT
• UNITS WITH WATERSIDE ECONOMIZER OR
BOILERLESS HEAT CONTROL
• AQUASTAT BULB INSTALLATION
Step 8 — Wire Field Power Supply . . . . . . . . . . . . . 11
• HIGH VOLTAGE
Step 9 — Wire Control Connections . . . . . . . . . . . . 22
• 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 . . 23
• UNIT PROTECTION MODULE (UPM)
• WATERSIDE ECONOMIZER
• BOILERLESS HEAT CONTROL (DELUXE D ONLY)
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
• CLEAN AIR COIL
Set Blower Motor Speed . . . . . . . . . . . . . . . . . . . . . . 25
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500266-01
Installation, Start-Up, and
Service Instructions
Printed in U.S.A.
Compact Water Source Heat Pumps
with Puron
• PERMANENT SPLIT CAPACITOR (PSC) MOTOR
• CONSTANT TORQUE (ECM) MOTOR
Page
System Flushing and Filling . . . . . . . . . . . . . . . . . . .29
System Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
• FLOW VERIFICATION
• FLOW REGULATION
• ANTIFREEZE
• FREEZE PROTECTION SELECTION
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
• ENVIRONMENT
• POWER SUPPLY
• UNIT STARTING CONDITIONS
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . .30
• SCROLL COMPRESSOR ROTATION
• COOLING MODE START-UP
• HEATING MODE START-UP
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Unit Protection Module (UPM) . . . . . . . . . . . . . . . . .39
Units with Complete C or Deluxe D Controls . . . . .39
• STANDBY
• COOLING
• HOT GAS REHEAT (OPTIONAL)
• WATERSIDE ECONOMIZER (OPTIONAL)
• TWO WAY WATER FLOW CONTROL VALVE
(OPTIONAL)
• BOILERLESS HEAT (DELUXE D ONLY)
• PUMP/VALVE RELAY (DELUXE D ONLY)
Units with WSHP Open Controls . . . . . . . . . . . . . . .39
• COOLING
• REVERSE CYCLE HEATING
• TWO POSITION OA DAMPER
• MODULATING OA DAMPER WITH DCV
• AUXILIARY MODULATING HOT WATER / STEAM
HEATING REHEAT
• 2-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
• 2-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
• INSUFFICIENT VENTILATION ALARM
• RELATIVE HUMIDITY ALARM
• TIME SCHEDULES
Form 50PC-6SI
Pg 1
Aquazone™
50PCH, PCV 007-070
®
Refrigerant (R-410A)
1-2020
Replaces: 50PC-5SI
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Table of Contents
Related Manuals for Carrier AQUAZONE 50PCV018
Summarization of Contents
Safety Considerations
General Safety Advice
General safety advice and precautions for handling the unit.
Pre-Installation Procedures
Inspection Upon Receipt
Checking the unit upon receipt for damage or shortages.
Storage Guidelines
Guidelines for storing the unit before installation.
Installation Steps
Jobsite Check
Verifying jobsite conditions and suitability for unit installation.
Unit Inspection
Detailed inspection of the unit after arrival at the jobsite.
Locate Unit
Unit Protection
Methods to protect the unit from damage and contamination.
Mount the Unit
Duct Flanges
Description of unit's fold-out duct flanges for installation.
Horizontal Unit Mounting
Instructions for mounting horizontal units using hanging brackets.
Check Duct System
Supply Air Configuration Conversion
Procedure to convert supply air direction on horizontal units.
Pipe Connections
Water Loop Piping Guidelines
Guidelines for piping water loop systems for heat pumps.
Ground Loop Piping Guidelines
Guidelines for piping ground loop systems for heat pumps.
Wire Field Power Supply
High Voltage Wiring Instructions
Instructions for wiring high voltage power supply connections.
Transformer Voltage Settings
Guidance on setting the unit transformer for specific voltages.
Wire Control Connections
Complete C & Deluxe D Control Wiring
Wiring instructions for Complete C and Deluxe D control packages.
Thermostat and DDC Sensor Placement
Placement and wiring guidelines for thermostats and DDC sensors.
Boilerless Heat Control Wiring
Wiring instructions for boilerless heat control features.
WSHP Open Control System
Information on WSHP Open DDC control system and sensors.
Configure Unit Control Components
Unit Protection Module (UPM) Configuration
Configuration and function of the Unit Protection Module.
Freeze Sensor Configuration
Setting the freeze protection temperature for water and air coils.
Pre-Start-Up Procedures
System Checkout
Essential checks before energizing the unit for the first time.
Clean Air Coil
Procedure for cleaning the unit's air coil for optimal performance.
Set Blower Motor Speed
Adjusting blower motor speed for PSC and ECM motors.
System Flushing and Filling
Water Flow Regulation
Methods for regulating water flow through the unit heat exchanger.
Antifreeze Procedures
Freeze Protection Selection
Selecting antifreeze type and concentration for freeze protection.
Start-Up Procedures
Operating Limits and Environment
Defining acceptable operating limits and installation environment.
Scroll Compressor Rotation Check
Cooling Mode Start-Up
Procedure for starting the unit in cooling mode and recording data.
Heating Mode Start-Up
Procedure for starting the unit in heating mode and recording data.
Unit Operation Modes
Power Up Mode
Initial power-up sequence and anti-short cycle delay.
Unit Protection Module (UPM) Operation
Overview of UPM operation and safeties for unit control.
Complete C & Deluxe D Control Operation
Detailed operation descriptions for C/D controls.
WSHP Open Control Operation
Description of WSHP Open DDC control features and modes.
Heating Reheat Control Options
Auxiliary Modulating Heating Reheat
Control logic for modulating hot water or steam for heating reheat.
2-Position Heating Reheat
Control logic for two-position hot water or steam for heating reheat.
Fan Speed Control Features
Automatic Fan Speed Control
Control logic for adjusting fan speed based on conditions.
Heating Fan Speed Control
Fan speed adjustment during heating to maintain SAT limits.
Cooling Fan Speed Control
Fan speed adjustment during cooling to maintain SAT limits.
Economizer Control Options
Modulating Water Economizer Control
Modulating water valve control for economizer function.
2-Position Water Economizer Control
Two-position water valve control for economizer.
Other Control Features
Power Fail Restart Delay
Control logic for delayed restart after power interruption.
Supply Air Temperature Monitoring
Monitoring and controlling supply air temperature with alarms.
Dehumidification Control
Unit operation for dehumidification using hot gas reheat.
Space Temperature Alarms
Generating alarms based on space temperature deviations.
Schedule Configuration
Time Schedules
Configuring time schedules for occupancy and operation.
Holiday Schedules
Programming holiday schedules to override normal operation.
Override Schedules
Setting up schedules to override occupancy or holiday settings.
Service Procedures
Periodic Lockout Troubleshooting
Troubleshooting common unit lockouts caused by airflow or water flow issues.
Condenser Cleaning
Gravity Flow Condenser Cleaning
Procedure for cleaning condensers using a gravity flow method.
Forced Circulation Condenser Cleaning
Procedure for cleaning condensers using forced circulation.
Troubleshooting Overview
UPM Troubleshooting
Troubleshooting common issues using the UPM board and its indicators.
UPM Fault Indicators
Malfunction Output Signal
Interpreting the malfunction output signal for unit alarms.
LED Fault Codes
Understanding UPM fault codes indicated by LED blink codes.
TXV Failure Diagnosis
Causes of TXV Failure
Identifying common reasons for Thermostatic Expansion Valve failure.
TXV Failure Symptoms
Recognizing the symptoms associated with a malfunctioning TXV.
TXV Diagnostics and Verification
Methods for diagnosing and verifying TXV performance.
Troubleshooting Guide
No Compressor Operation
Diagnosing issues when the compressor does not run but the fan does.
Fan Operation Issues
Troubleshooting problems with PSC and ECM fan motor operation.
Unit Cooling Shift Issues
Diagnosing problems with the unit not shifting into cooling mode.
Supply Air Temperature Issues
Troubleshooting supply air temperature problems.
Noise Level Troubleshooting
Diagnosing and resolving noise issues related to airflow, structure, or compressor.
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