WIRING DIAGRAM
Air Handler with iQ Drive
711226B
(Replaces 711226A)
06/12
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
3. Transformer may have a dual voltage primary tap.
Match the tap position with the supply voltage used.
4. If the internal wiring is replaced, use only 105°C copper
wire of the same gauge.
NOTES:
1. The blower motor speed tap connection may not be as shown.
See the Installation Instructions.
2. Disconnect all power before servicing.
21
240
24 V
208COM
TRANSFORMER
R
C
Y
-
W
G
C
R
MOTOR
R4
SW
Y
EXV
R C
ID
BLWR
R
DX+
DX-
GND
R
C
R C W2 W H Y
DX+
DX-
GND
THERMISTOR
EXV
6-WIRE
CABLE
SUCTION TEMP
SENSOR
CABLE
SUCTION
PRESSURE
SENSOR
HARNESS
THRU CORE
RING
THRU CORE
RING
HARNESS
HARNESS
COIL TEMP
SENSOR
CABLE
POWER
FILTER
POWER CABLE
HARNESS
HARNESS
YELLOW
WHITE
GREEN
RED
YELLOW
WHITE
GREEN
RED
RED
WHITE
GRAY
RED
CONTROL
CABLE
GREEN
WHITE
WHITE
BLACK
GREEN
BLACK
RED
HEATER PLUG
L1
L2
COOL
EAL
L1 L2 C R
R
BLWDTC
HEAT
BLACK
WHITE
GRAY
RED
GRAY
RED
YELLOW
GREEN
WHITE
BLACK
BLACK
RED
CUT WIRES TO REMOVE PLUG
HOUSING WHEN HEATER KIT
NOT INSTALLED.
BLUE
IF BOARD EQUIPPED
WITH BLWDTC TERMINAL
-
1
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