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 Printed in U.S.A. Form 50PC-6SI Pg 1 1-2020 Replaces: 50PC-5SI
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
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
• PERMANENT SPLIT CAPACITOR (PSC) MOTOR
• CONSTANT TORQUE (ECM) MOTOR
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
Aquazone™
50PCH, PCV 007-070
Compact Water Source Heat Pumps
with Puron
®
Refrigerant (R-410A)
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