Carrier 38HDR018-060 specifications Contents, Safety Considerations, Installation, 38HDF,HDR Unit

38HDF018-036 Duct Free Condensing Units 38HDR018-060 Ducted Condensing Units

Installation, Start-Up and

Service Instructions

CONTENTS

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

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

•UNPACK UNIT

•INSPECT SHIPMENT

•CONSIDER SYSTEM REQUIREMENTS

•MATCHING THE CONDENSING UNIT TO AN INDOOR UNIT

Step 2 — Rig and Mount Unit. . . . . . . . . . . . . . . . . . . . . 3

•MOUNTING ON GROUND

•MOUNTING ON ROOF

•RIGGING

Step 3 — Complete Refrigerant Piping

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

•CHECK ACCURATER CONTROL

•FILTER DRIER

•MAKE PIPING SWEAT CONNECTORS

•PROVIDE SAFETY RELIEF

Step 4 — Make Electrical Connections . . . . . . . . . . . 6

•CONTROL CIRCUIT WIRING

•POWER WIRING

•CONNECTIONS TO DUCT-FREE FAN COIL UNITS

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . .14,15

SAFETY CONSIDERATIONS

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

Untrained personnel can perform basic maintenance, such as cleaning and replacing filters. All other operations should be performed by trained service personnel. When working on air conditioning equipment, observe safety precautions in litera- ture, tags, and labels attached to unit.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly. Consult local building codes and the National Electrical Code (NEC) for special installation requirements.

Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power if applicable. Elec- trical shock can cause serious personal injury.

Puron® (R-410A) refrigerant systems operate at higher pressures than standard R-22 systems. Do not use R-22 ser- vice equipment or components on Puron refrigerant equip- ment. If service equipment is not rated for Puron refrigerant, equipment damage or personal injury may result.

INSTALLATION

Step 1 — Complete Pre-Installation Checks

UNPACK UNIT (See Fig. 1) — Move the unit to final loca- tion. Remove unit from carton, being careful not to damage service valves and grilles.

Fig. 1 — 38HDF,HDR Unit

INSPECT SHIPMENT — File a claim with the shipping company if shipment is damaged or incomplete. Check unit nameplate to ensure unit matches job requirements.

CONSIDER SYSTEM REQUIREMENTS — Consult local building codes and NEC for special installation requirements.

Allow sufficient space for airflow clearance, wiring, refrig- erant piping, and servicing unit. See Fig. 2.

Locate unit so that condenser airflow is unrestricted on both sides. Refer to Fig. 2.

Unit may be mounted on a level pad directly on base legs or mounted on raised pads at support points. See Fig. 2 for center of gravity.

MATCHING THE CONDENSING UNIT TO AN INDOOR UNIT — The 38HDF,HDR units can be matched to a corresponding indoor unit. The 38HDF018-036 units can be matched with an in-ceiling cassette or high wall indoor unit. The 38HDR unit can be matched with under-ceiling and resi- dential fan coils. Refer to separate indoor unit literature for more information.

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

Book	1	4	Catalog No. 02-38HD0001-SI	Printed in U.S.A.	Form 38HD-4SI	Pg 1	1-06	Replaces: 38HDC-3SI
Tab	3e	2f