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RT+
RT-
S
G
Y1
Y2
O/B
1-wire accesory
(humidifier/dehumidifier/ventilator)
C
RC
RH
W1
W2
AC+
AC-
RCGYWWire1
Furnace control board
Accessory
T18 automatically connects Rc to AC- when 1-wire configuration is selected during accessory setup.
Warning: Damage may occur if accessory is connected to AC
！
RT+
RT-
S
G
Y1
Y2
O/B
1-wire Integrated dehumidifier
C
RC
RH
W1
W2
AC+
AC-
RCGYDEHUM
Furnace control board
T18 automatically connects RC to AC- when 1-wire configuration is selected during
accessory setup.
！
W
45 46
Warning: Damage may occur if accessory is connected to AC
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