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Step 5: Match Wiring
Installation
FROM
FURNACE
W
RH
G
C
3 Wire Heat + C
Wire C W
RH
G
Match the wiring diagram below with the wires you labeled in Step 3 and proceed to the
page referenced for detailed set-up information for your application.
Note: The C wire (24 Volts AC) is not optional.
Note: If your combination of wires in not shown, go to Step 6 and modify your labeling per
the cross reference chart.
FROM
FURNACE
C
W
R
H
2 Wire Heat + C
Wire CW
RH
FROM
FURNACE
C
W
R
H
Y
G
4 Wire Heat/Cool + C
Wire CW
RH
Y
G
5 Wire Heat/Cool + C
Wire CW
RH
Y
G
RC
FROM
FURNACE
C
W
R
H
Y
G
RC
FROM
FURNACE
C
G
R
H
Y
B
O
or
4 Wire Heat Pump without
Auxilliary Heat + C
Wire C
B
RH
Y
G
Oor
FROM
FURNACE
C
W
R
H
Y
G
W2
1 Stage Cool, 2 Stage Heat + C
Wire C
RH
Y
G
W2
W
FROM
FURNACE
W
R
H
A
C
3 Wire Zoned Hot Water + C
Wire CW
RH
A
Go to Page 14
FROM
FURNACE
C
W2
R
H
Y
G
B
O
or
5 Wire Heat Pump with
Auxilliary Heat + C
Wire C
B
RH
Y
G
O
or
W2
Go to Page 14
Go to Page 15 Go to Page 15
Go to Page 16 Go to Page 16
Go to Page 17 Go to Page 17