Carrier 50HQP072-120 Air Conditioner User Manual


 
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500077-01 Printed in U.S.A. Form 50HQP-C1SI Pg 1 11-10 Replaces: New
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . .1,2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
STORAGE
•PROTECTION
•INSPECT UNIT
Step 3 — Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 4 — Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 5 — Install Duct System. . . . . . . . . . . . . . . . . . . . . 5
SOU ND ATTEN UATION
EXISTING DUCT SYSTEM
Step 6 — Install Condensate Piping Drain. . . . . . . . 6
•INSTALLATION
VENTING
Step 7 — Field Convert Air Discharge . . . . . . . . . . . . 6
Step 8 — Install Piping Connections . . . . . . . . . . . . . 7
WATER LOOP APPLICATIONS
GROUND-LOOP APPLICATIONS
GROUND-WATER APPLICATIONS
Step 9 — Install Field Power Supply Wiring . . . . . . 8
POWER CONNECTION
SUPPLY VOLTAGE
EXTERNAL LOOP POWER CONNECTION
420-VOLT OPERATION
Step 10 — Install Field Control Wiring. . . . . . . . . . . 15
THERMOSTAT CONNECTIONS
WATER FREEZE PROTECTION
AIR COIL FREEZE PROTECTION
ACCESSORY CONNECTIONS
WATER SOLENOID VALVES
PRE-START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-20
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Airflow and External Static Pressure . . . . . . . . . . . 16
FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . 20-22
Complete C Control Jumper Settings. . . . . . . . . . . 20
Complete C Control DIP Switches. . . . . . . . . . . . . . 20
Deluxe D Control Jumper Settings . . . . . . . . . . . . . 20
Deluxe D Control DIP Switches . . . . . . . . . . . . . . . . 21
Deluxe D Control Accessory Relay
Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-24
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Start Up System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 22
Unit Start-Up in Cooling Mode. . . . . . . . . . . . . . . . . . . 22
Unit Start-Up in Heating Mode. . . . . . . . . . . . . . . . . . . 23
Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Page
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 24
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 24
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24,25
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Units with Aquazone Complete C Control . . . . . . . 24
Units with Aquazone Deluxe D Control . . . . . . . . . . 24
SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25,26
Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Aquazone Deluxe D Control LED Indicators . . . . . 25
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Water Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 27
Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 27
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Air Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 28
Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 28
Blower Fan Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Blower Fan Performance Adjustment . . . . . . . . . . . 29
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 30-32
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . CL-1,CL-2
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 precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply.
Improper installation, adjustment, alteration, service, main-
tenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The
qualified installer or agency must use factory-authorized kits or
IMPORTANT: Read the entire instruction manual before
starting installation.
AQUAZONE™
50HQP072-120
Horizontal Water Source Heat Pumps
with PURON
®
Refrigerant (R-410A)
50 Hz