32
Figure 31. Typical Communication Wiring Non-VRF Air Handler & 3H/2C Thermostat
Figure 32. Typical Communication Wiring Non-VRF Air Handler & 4H/2C Thermostat
Y2
W/E
C
Y
C
G
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
G
Y2
R
O/B
H/DH
W2
W1
C
Y
W
O/B
Dh
Y1
R
Support 3H and 2C thermostat
Note: Any time the electric heat
elements are active, the indoor fan
will run in high stage.
O/B
Y2
W/E
C
Y
C G
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
G
R
O/B
H/DH
W2
W1
C
Y
W
Dh
Y1
R
Wiring for 4H and 2C thermostat
W2
Y2
Note: Any time the electric heat
elements are active, the indoor fan
will run in high stage.
O/B
O/B
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