Aprilaire 8463 - Page 5

8 9
WIRING – MODEL 8465 & 8446 SINGLE
TRANSFORMER (USE JUMPER WIRE)
INSTALLATION
AUX HEATING
COMPRESSOR
FAN
REVERSE VALVE
FAULT DETECT
OUTDOOR TEMP
SENSOR
JUMPER
TRANSFORMER
C
G
Y
W
R
L
S1
S2
O/B
RC
WIRING – MODEL 8465 & 8446 TWO
TRANSFORMERS (REMOVE JUMPER WIRE)
AUX HEATING
COMPRESSOR
FAN
REVERSE VALVE
FAULT DETECT
OUTDOOR TEMP
SENSOR
AUX HEATING
TRANSFORMER
HEAT PUMP
TRANSFORMER
C
G
Y
W
R
L
S1
S2
O/B
RC
WIRING – MODEL 8466 & 8448 SINGLE
TRANSFORMER (USE JUMPER WIRE)
FOR HEAT/COOL SYSTEM
INSTALLATION
1st HEATING
1st COOLING
FAN
2nd HEATING
2nd COOLING
OUTDOOR TEMP
SENSOR
NOT USED NOT USED
JUMPER
TRANSFORMER
C
G
Y
W
R
L
S1
S2
O/B
W2
Y2
RC
WIRING – MODEL 8466 & 8448 TWO
TRANSFORMERS (REMOVE JUMPER WIRE)
FOR HEAT/COOL SYSTEM
1st HEATING
1st COOLING
FAN
2nd HEATING
2nd COOLING
OUTDOOR TEMP
SENSOR
NOT USED NOT USED
HEATING
TRANSFORMER
COOLING
TRANSFORMER
C
G
Y
W
R
L
S1
S2
O/B
W2
Y2
RC