User's Manual

14 15
Installation
Heat pump wiring diagrams
Single transformer (use jumper wire) Two transformers (remove jumper wire)
Y2I1 W2
S2S1
T1 T2 I2
G
Y
O/B
W
RC
RL
C
G
Y
O/B
W
RC
RL
C
Y2I1 W2
S2S1
T1 T2 I2
JUMPER
OUTDOOR TEMP
SENSOR
(OPTIONAL)
REMO
TE TEMP
SENSOR
(OPTIONAL)
TRANSFORMER
1st AUX HEATING
FAN
2nd COMPRESSOR
1st COMPRESSOR
2nd AUX HEATING
FAULT DETECT
REVERSING VALVE
Y2I1 W2
S2S1
T1 T2 I2
G
Y
O/B
W
RC
RL
C
G
Y
O/B
W
RC
RL
C
Y2I1 W2
S2S1
T1 T2 I2
OUTDOOR TEMP
SENSOR
(OPTIONAL)
REMO
TE TEMP
SENSOR
(OPTIONAL)
TRANSFORMERS
FAULT DETECT
1st AUX HEATING
FAN
2nd COMPRESSOR
1st COMPRESSOR
2nd AUX HEATING
REVERSING VALVE
Indoor Air Quality equipment wiring diagrams
Dehumidifier wiring Humidifier wiring
Y2I1 W2
S2S1
T1 T2 I2
G
Y
O/B
W
RC
RL
C
G
Y
O/B
W
RC
RL
C
Y2I1 W2
S2S1
T1 T2 I2
DEHUMIDIFIER
Y2I1 W2
S2S1
T1 T2 I2
G
Y
O/B
W
RC
RL
C
G
Y
O/B
W
RC
RL
C
Y2I1 W2
S2S1
T1 T2 I2
HUMIDIFIER
EVAPORA
TIVE
HUMIDIFIER
Not
e:
Tr
ansformer is
not used for
steam humidifiers.
Note: The I1/I2 output is a dry contact closure. The humidifier wiring diagram assumes the control is
powering a solenoid valve. The dehumidifier wiring diagram is for a normally open dry contact input.
See the individual humidifier or dehumidifier installation instructions for product-specific wiring details.
Note: The O/B terminal must be configured for O or B operation by setting system setting 01
(Reversing Valve) to O—On in Cooling or B—On in Heating.