548086-XIM-C-0814
Johnson Controls Unitary Products
9
FIGURE 9:
Typical Field Wiring (Air Handler / Electrical Heat) (Single-Phase)
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
POWER WIRING
CONTACTOR
TERMINALS
COIL
GND.
LUG
C
Y
R
G
W
Y
R
G
W
POWER WIRING
CONTROL WIRING
FACTORY WIRING
24 VOLT CONTROL WIRING
MINIMUM 18 GA. WIRE
(NEC CLASS 2)
FURNACE OR AIR HANDLER TERMINAL BLOCK
ROOM THERMOSTAT
CONDENSING UNIT
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.
TERMINAL W IS ONLY
REQUIRED ON SYSTEMS
WITH HEAT.
*
*
A0158-001
FIGURE 10:
Typical Field Wiring (Air Handler / Electrical Heat) (Three Phase - GCGA36-60)
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
POWER WIRING
CONTACTOR
TERMINALS
COIL
GND.
LUG
C
Y
R
G
W
Y
R
G
W
POWER WIRING
CONTROL WIRING
FACTORY WIRING
24 VOLT CONTROL WIRING
MINIMUM 18 GA. WIRE
(NEC CLASS 2)
FURNACE OR AIR HANDLER TERMINAL BLOCK
ROOM THERMOSTAT
CONDENSING UNIT
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.
TERMINAL W IS ONLY
REQUIRED ON SYSTEMS
WITH HEAT.
*
*
A0159-001
FIGURE 11:
Typical Field Wiring for 76 Models with Air Handler (Three-Phase - GCGA76)
A0160-001
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.
POWER WIRING
CONTACTOR
TERMINALS
COIL
GND.
LUG
R
B
Y
D
W
R
Y
G
POWER WIRING
CONTROL WIRING
FACTORY WIRING
24 VOLT CONTROL
WIRING MINIMUM
18 GA. WIRE
(NEC CLASS 2)
FURNACE OR AIR HANDLER
TERMINAL BLOCK
ROOM THERMOSTAT
TI
N
U
G
NI
S
N
E
D
N
O
C
X
53
G
60
66
TRANSFORMER
RED
BRN
BRN
YEL
RED: 24 VAC
BROWN: COMMON
YELLOW: 1ST STAGE COOLING
