280241-YIM-D-0909
Johnson Controls Unitary Products
9
FIGURE 5 - TYPICAL FIELD CONTROL WIRING DIAGRAM TWO STAGE THERMOSTAT - TWO STAGE
GAS HEAT
COMPRESSORS
Units with rotary compressors must have compressor
mountings adjusted. Refer to Figure 7 for rotary compressor
mounting specifications. All other unit compressor mount-
ings are factory-adjusted and are ready for operation.
R
G
Y
R
G
W
Y
Y
W
W
**
** = Minimum wire size of 18 AWG
wire should be used for all
field installed 24 volt wire.
THERMOSTAT
UNIT TERMINAL STRIP
NOTE:
HEAT ANTICIPATOR
SHOULD BE SET AT 0.35
AMPS FOR ALL MODELS.
24 VOLT
TRANSFORMER
C
2
1
C
PROGRAMMABLE
THERMOSTAT ONLY
1
2
1
W
2
FIGURE 6 - TYPICAL FIELD POWER WIRING DIAGRAM
G R O U N D
L U G
R E F E R T O E L E C T R I C A L
D A T A T A B L E S T O S I Z E
T H E D I S C O N N E C T
F I E L D - S U P P L I E D
D I S C O N N E C T
C O N T A C T O R
F I E L D - S U P P L I E D
D I S C O N N E C T
C O N T A C T O R
G R O U N D
L U G
R E F E R T O E L E C T R I C A L
D A T A T A B L E S T O S I Z E
T H E D I S C O N N E C T
S I N G L E
P H A S E
P O W E R
S U P P L Y
T H R E E
P H A S E
P O W E R
S U P P L Y
Do not loosen compressor mounting bolts, except
on rotary compressors.
