Carrier 38AQS008 specifications Installation, Start-Upand Service Instructions, Contents

38AQS008 Air-Cooled Split System Heat Pump 50/60 Hz

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Step 1 — Complete Pre-Installation Checks . . 1

•UNCRATE UNIT

•INSPECT SHIPMENT

•CONSIDER SYSTEM REQUIREMENTS

Step 2 — Rig and Mount the Unit . . . . . . . . . . . . 2

•RIGGING

•MOUNTING

•COMPRESSOR MOUNTING

Step 3 — Complete Refrigerant Piping

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

•SIZE REFRIGERANT LINES

•FILTER DRIER AND MOISTURE INDICATOR

•LIQUID LINE SOLENOID VALVE

•SAFETY RELIEF

•SUCTION PIPING AT INDOOR COIL AND TXV SENSING BULB LOCATION

Step 4 — Make Electrical Connections . . . . . . . 3

•FIELD POWER SUPPLY

•ACCESSORY ELECTRIC HEAT

•FIELD CONTROL WIRING

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10,11

Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . 10

Evacuate and Dehydrate . . . . . . . . . . . . . . . . . . . 10

Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . 10

Refrigerant Service Ports . . . . . . . . . . . . . . . . . . 10

Sequence of Operation . . . . . . . . . . . . . . . . . . . . 10

Checking Cooling and Heating Control

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Outdoor-Fan Adjustment . . . . . . . . . . . . . . . . . . . 11

Compressor Removal . . . . . . . . . . . . . . . . . . . . . . 11

Cooling Mode Operation . . . . . . . . . . . . . . . . . . . 12

Heating Mode Operation . . . . . . . . . . . . . . . . . . . 12

TROUBLESHOOTING CHART . . . . . . . . . . . . . . 14,15

START-UP CHECKLIST . . . . . . . . . . . . . . . . CL-1,CL-2

SAFETY CONSIDERATIONS

Installing and servicing air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and qualified service personnel should install or service air-conditioning equipment.

When working on air-conditioning equipment, observe pre- cautions in literature and on tags and labels attached to unit.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire ex- tinguisher available. Read these instructions thoroughly. Con- sult local building codes and National Electrical Code U.S.A. (NEC) for special installation requirements.

Before installing or servicing system, always turn off main power to system. There may be more than one dis- connect switch. Electrical shock can cause personal injury.

INSTALLATION

The 38AQS008 unit uses a semi-hermetic compressor. See Tables 1A and 1B for physical data.

The 38AQS008 is approved by Carrier for use only with 40RMQ008 fan cooling units. Use only approved far coils.

The 38AQS008 (60 Hz) is Underwriters’ Laboratories (UL) and Canadian Underwriters’ Laboratories (CUL) approved for use with the 40RMQ008 fan coil only.

Step 1 — Complete Pre-Installation Checks

UNCRATE UNIT (See Fig. 1) — Remove unit packaging except for the top skid assembly and wood bumpers, which should be left in place until after unit is rigged into place.

INSPECT SHIPMENT — File claim with shipping com- pany if shipment is damaged or incomplete.

Fig. 1 — 38AQS008 Unit

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book	1	4	PC 111	Catalog No. 533-887	Printed in U.S.A.	Form 38AQS-4SI	Pg 1	6-95	Replaces: 38AQS-3SI
Tab	5a	5a