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

CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1 - Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . 2
• HORIZONTAL UNITS (50PCH)
• VERTICAL AND DOWNFLOW UNITS (50PCV,PCD)
Step 2 - Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• STORAGE
• PROTECTION
• INSPECT UNIT
Step 3 - Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 4 - Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . . . 8
• DUCT FLANGES
• HORIZONTAL UNITS (50PCH)
• VERTICAL AND DOWNFLOW UNITS (50PCV,PCD)
Step 5 - Check Duct System . . . . . . . . . . . . . . . . . . . . 9
• HORIZONTAL SUPPLY AIR CONFIGURATION
CONVERSION
Step 6 - Install Condensate Drain . . . . . . . . . . . . . . . 9
Step 7 - Pipe Connections . . . . . . . . . . . . . . . . . . . . . 11
• WATER LOOP APPLICATIONS
• GROUND LOOP APPLICATIONS
• INSTALLING SUPPLY AND RETURN HOSE KIT
Step 8 - Wire Field Power Supply . . . . . . . . . . . . . . 12
• HIGH VOLTAGE
• LOW VOLTAGE
• HOT GAS REHEAT CONTROL
Step 9 - Wire Field Controls. . . . . . . . . . . . . . . . . . . . 22
• SAFETY DEVICES AND UNIT PROTECTION
MODULE (UPM)
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
• AIR COIL
PSC Blower Speed Selection . . . . . . . . . . . . . . . . . . 26
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
• ENVIRONMENT
• POWER SUPPLY
• UNIT STARTING CONDITIONS
Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 28
Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 28
Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 34
Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
• FREEZE PROTECTION SELECTION
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 35
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Units with Complete C or Deluxe D Control . . . . . 35
Units with WSHP Open Controls
with UPM Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500191-01
Installation, Start-Up, and
Service Instructions
Printed in U.S.A.
50PCH, PCV, PCD007-070
Compact Water Source Heat Pumps
with Puron
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Page
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 36
Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 37
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 37
Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 38
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Control Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Thermostatic Expansion Valves. . . . . . . . . . . . . . . . . 38
50PCH,PCV,PCD
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
IMPORTANT: Read the entire instruction manual before
starting installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the unit,
and other safety precautions that may apply.
Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause explosion, fire, electrical shock or other
conditions which may cause personal injury or property dam-
age. Consult a qualified installer, service agency, or your distrib-
utor or branch for information or assistance. The qualified in-
staller or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instruc-
tions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult
local building codes and the National Electrical Code (NEC)
for special installation requirements.
Understand the signal words - DANGER, WARNING,
and CAUTION. DANGER identifies the most serious hazards
which will result in severe personal injury or death. WARN-
ING signifies hazards that could result in personal injury or
death. CAUTION is used to identify unsafe practices, which
would result in minor personal injury or product and property
damage.
Form 50PC-5SI
Aquazone™
®
Refrigerant (R-410A)
Pg 1 9-18 Replaces: 50PC-4SI
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