403134-YIM-E-0311
Johnson Controls Unitary Products
15
Figure 13: Typical Field Power and Control Wiring
* DEHUMIDISTAT
Yellow
Yellow
WIRES LOCATED IN
UNIT CONTROL BOX
LOW VOLTAGE SECTION
* DEHUMIDISTAT CLOSES
ON RISE IN HUMIDITY
R
G
W
R
G
Y
1
Y
1
Y
2
W
Y/Y
2
** = Minimum wire size of 18 AWG
wire should be used for all field
installed 24 volt wire.
2 STAGE
THERMOSTAT
UNIT CONTROL BOARD
TERMINAL STRIP
24 VOLT
TRANSFORMER
* *
C
C
PROGRAMMABLE
THERMOSTAT ONLY
R
G
R
G
Y
1
Y
1
Y
2
W
1
W
2
Y/Y
2
** = Minimum wire size of 18 AWG
wire should be used for all field
installed 24 volt wire.
2 STAGE
THERMOSTAT
UNIT CONTROL BOARD
TERMINAL STRIP
24 VOLT
TRANSFORMER
* *
C
C
PROGRAMMABLE
THERMOSTAT ONLY
W
1
W
2
* DEHUMIDISTAT
Yellow
WIRES LOCATED IN
UNIT CONTROL BOX
LOW VOLTAGE SECTION
* DEHUMIDISTAT CLOSES
ON RISE IN HUMIDITY
Yellow
REFER TO THE ELECTRICAL DATA
TABLES TO SIZE THE DISCON-
NECT SWITCH, OVERCURRENT
PROTECTION AND WIRING.
TYPICAL POWER WIRING
TYPICAL CONTROL WIRING
