Carrier 50HQP072-120 specifications Contents, Safety Considerations

AQUAZONE™ 50HQP072-120 Horizontal Water Source Heat Pumps

with PURON® Refrigerant (R-410A) 50 Hz

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

•SOUND ATTENUATION

•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

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 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

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