WIRING
LEGEND
TERMINAL
EQUIPMENT
STANDARD COLOR
Y1
First Heat Pump & AC
Yellow
G
Fan
Green
W2
First Stage Furnace
White
OBW
Reverse Valve - Second Stage Furnace
Orange
RH
24v
Red
Y2
Second Heat Pump & AC
Unknown
C
Common
Blue
H
Humidity Control
Unknown
DH
Dehumidity Control, Variable Fan Control
Unknown
RC
24v
Unknown
11 & 12
Not Used
NOTE: The above colors are standard in HVAC industry. The wiring should be confirmed before installation
WIRING
TABLE
CONFIGURATION Y1
Y2
W2
OB/W
R/C
R/H
G
1 Stage Cooling, 2 Stage Heating
Air Conditioner
2 Stage Gas
AC
Gas1
Gas2
x
x
x
Air Conditioner
Electrical Furn.
AC
El.Furn1
El.Furn2
x
x
x
Air Conditioner
Emg. El. Furn.
AC
Emg. El. Furn.
El.Furn1
El.Furn2
x
x
x
Air Conditioner
Gas
AC
Gas1
Gas2
x
x
x
Air Conditioner
Oil
AC
Oil1
Oil2
x
x
x
Heat Pump
Electrical Furn.
HP
El.Furn
OB
x
x
x
Heat Pump
Gas
HP
Gas
OB
x
x
x
Heat Pump
Oil
HP
Oil
OB
x
x
x