508258-YIM-E-0412
Johnson Controls Unitary Products 11
Figure 7: Typical Field Control Wiring Diagram Single Stage Thermostat-Single Stage Gas Heat
Figure 8: Typical Field Control Wiring Diagram Single Stage Thermostat-Two Stage Gas Heat
R
G
W
R
G
C
Y
1
Y
W
1
C
** = Minimum wire size of 18 AWG
wire should be used for all field
installed 24 volt wire.
PROGRAMMABLE
THERMOSTAT ONLY
THERMOSTAT
CFM CONTROL BOARD
TERMINAL STRIP
24 VOLT
TRANSFORMER
* *
NOTE: HEAT ANTICIPATOR
SHOULD BE SET AT 0.35
AMPS FOR ALL MODELS.
R
G
W
R
G
C
Y
1
Y
W
2
C
W
1
** = Minimum wire size of 18 AWG
wire should be used for all field
installed 24 volt wire.
PROGRAMMABLE
THERMOSTAT ONLY
THERMOSTAT
CFM CONTROL BOARD
TERMINAL STRIP
24 VOLT
TRANSFORMER
**
NOTE: HEAT ANTICIPATOR
SHOULD BE SET AT 0.35
AMPS FOR ALL MODELS.