Carrier 48GH - Manual

Number One
----------------------- i
AirConditbninq 1
Maker
Division of
Carrier Corporation
Carrier Parkway • Syracuse NY 13221
Combination Heating/Cooling Units
NOTE TO INSTALLER: THESE INSTRUCTIONS SHOULD BE
LEFT WITH THE EQUIPMENT OWNER.
INDEX
Page
SAFETY CONSIDERATIONS........................... 2
INTRODUCTION............................................... 2
GENERAL ........................................................ 2
INSTALLATION................................................ 2-8
• Rigging and Unit Placement .....................2-3
ROOFTOP INSTALLATION
GROUND LEVEL INSTALLATION
CLEARANCES
• Condensate Disposal .................................. 3
• Venting ..........................................................4
• Typical Piping .............................................. 5
Page
• Duct Connections............................................... 5
• Typical Wiring Connections............................
6-8
HIGH-VOLTAGE CONNECTIONS
SPECIAL PROCEDURES FOR
208-V OPERATION
LOW-VOLTAGE CONNECTIONS
HEAT ANTICIPATOR SETTING
START-UP............................................................... 8-16
OPERATING SEQUENCE.................................... 16-17
SERVICE................................................................ 17-20
TROUBLESHOOTING CHARTS .......................... 21-22
VENT CAP
COMBUSTION AIR INLET BOX
G HIGH VOLTAGE INLET
NOT ON MODELS 48GLOI8 THRU
036; GH024 THRU 030
k
FPT GAS
INLET
NOT ON MODELS
48GL0I8 THRU 036;
GH024 THRU 030
48GH,GL REQUIRED CLEARANCES (ft-in.)
Above flue vent . . . . . . . 3-0
Duct side of unit 0-6
Side opposite ducts . 2-6
Blower access panel side 2-6
Side opposite blower access panel . 2-6
Bottom of unit . .0
NOTE Provision must be made for fresh ambient air to reach the
outdoor coil without recirculation of the air from the outdoor fan
discharge
Fig. 1 — Dimensions
© Carrier Corporation 1981 Form 48GH.GL-1SI