ECAFRETNI
BOARD
R
C
W2
W
H Y
R
P3
3
2
1
O.D. UNIT
I.D. BLOWER
THERMOSTAT
TWIN
DX+
DX-
GND
GND
C R
DX-
DX+
TO
OUTDOOR
UNIT
HARNESS
THERMISTOR
THRU CORE
RING
TEMP
SENSOR
COIL
THRU
CORE
RING
HARNESS
HARNESS
HARNESS
VXE
DRAOB
ON
R
Y
SW2
P2
THERM
P3
THERM
SW1
COMM
P4
EXV
P1
C
OFF
SUCTION TEMP.
SENSOR
SUCTION PRESS.
SENSOR
GREEN
WHITE
YELLOW
I.D.
MOTOR
POWER
CABLE
TRANSFORMER
CONTROL
CABLE
7
6
5
4
3
2
1
PLUG
CONNECTOR
PLUG
CONNECTOR
POWER FILTER
TO
CONTROLLER
THERMOSTAT
Y1
P3
L2
L2
L2 COM
24 VAC
COM
L1
L1
XFMR
W2
W1
O
Y/Y2
HEATER PLUG
KIT
G
R
C
RED
YELLOW
WHITE
GREEN
BLACK
RED
GREEN
BLACK
WHITE
RED
RED
RED
GRAY
YELLOW
WHITE
BLACK
TO OUTDOOR
UNIT
(BLACK WIRES)
EXV
6-WIRE CABLE
CABLE
CABLE
WHITE
BLUE
GRAY
RED
CUT WIRES TO REMOVE
PLUG HOUSING WHEN HEATER
KIT IS NOT INSTALLED.
GREEN
BLACK
BLACK
RED
GRAY
BLACK
WHITE
GREEN
WHITE
RED
710872A
(Replaces 7108720)
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
Air Handler for IQ Drive System
NOTES:
1. Not suitable for systems exceeding
120V to ground.
2. If any internal wiring must be replaced,
it must be replaced with 105°C wire of
the same gauge.
¢710872-¤
/