Carrier 40QA024-060 specifications Contents, Complete Pre-Installation, Safety Considerations

40QA024-060 Ceiling-Suspended Fan Coil Units

Installation, Start-Up and Service Instructions

CONTENTS SAFETY CONSIDERATIONS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Step 1 — Complete Pre-Installation

Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

•UNPACK UNIT

•INSPECT SHIPMENT

•BEFORE INSTALLATION

Step 2 — Select Location . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Step 3 — Mount Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

•WOODEN STRUCTURE

•NEWLY BUILT CONCRETE SLAB

•METAL STRUCTURE

•PREVIOUSLY BUILT CONCRETE SLAB

•TO MOUNT UNIT

•TO INSTALL THERMOSTAT

Step 4 — Connect Refrigerant Piping. . . . . . . . . . . . . . . .7 Step 5 — Connect Condensate Drain Line . . . . . . . . . . .8 Step 6 — Make Electrical Connections . . . . . . . . . . . . .10 Step 7 — Install Thermostat . . . . . . . . . . . . . . . . . . . . . . . .12

Step 8 — Make Connections Between

Indoor and Outdoor Units . . . . . . . . . . . . . . . . . . . . . . . .15

•CHECK ACCURATOR METERING DEVICE

•COOLING ONLY SYSTEMS

•HEAT PUMP SYSTEMS

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18,19

After Extended Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . .18

Seasonal Changeovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Adjusting Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Operating Mode Memory . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Automatic Operation (Auto.) Mode. . . . . . . . . . . . . . . . . .18

Operating Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

•FAN OPERATION

•COOLING MODE OPERATION

•HEAT PUMP OPERATION

•DEFROST (Heat Pump Only)

•SYSTEM SAFETIES

•SPECIAL OPERATION, HEATING

CLEANING AND MAINTENANCE . . . . . . . . . . . . . . . . 19,20

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Air Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

•REMOVE AIR FILTERS

•CLEAN OR REPLACE FILTERS

Clean Indoor Unit Bottom Panel . . . . . . . . . . . . . . . . . . . .20

Clean Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Clean Outdoor Coil (Outdoor Unit). . . . . . . . . . . . . . . . . .20

Clean Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . .20

• CLEAN OR REPLACE DRAIN PAN

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Before Calling for Service . . . . . . . . . . . . . . . . . . . . . . . . . .20

• IF SYSTEM FAILS TO OPERATE

FRESH AIR INSTALLATION OPTION . . . . . . . . . . . . . . . .20

Ventilation-Air Accessory . . . . . . . . . . . . . . . . . . . . . . . . . .20

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . .CL1, CL-2

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 precautions 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 extinguisher available. Read these instructions thoroughly. Consult local building codes and 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 dis- connect switch. Turn off accessory heater power if appli- cable. Electrical shock can cause personal injury.

INSTALLATION

Installation instructions for fan coil units (Fig. 1) are con- tained in this manual. Refer to this manual for proper installa- tion of the complete system. Note that the outdoor units are shipped with installation and service instructions for basic in- stallation of the outdoor section. Be sure to make the connec- tions in Cooling Only Systems and Heat Pump Systems sec- tions on page 15 of this literature so that the unit will operate properly.

Refer to Table 1 for proper system matches.

Fig. 1 — Ceiling-Suspended Fan Coil Unit

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. 02-40QA0007-SI	Printed in U.S.A.	Form 40QA-7SI	Pg 1	706 3-06 Replaces: 40QA-5SI
Tab	3d	2c