Installation Guide
1
Aux
Y
G
O
L
R
B
C
E
Aux Y
G
O
L
R
B
C
E
4
3
3
2
1
2
2
or
X
X2
or
W
W1
W2
or
Y1
M
or
F
or
F
or
V
VR
or
H
or
B
X
If labels do not match thermostat letters,
check the chart at right (see notes, below).
Connect wires (less common wire designations)
If the old thermostat had both
V
and
VR
wires, contact a heating/
cooling contractor for help.
If the old thermostat had both
O
and
B
wires, attach the
B
wire to
the
C
terminal. If another wire is
attached to the
C
terminal, call
1-800-468-1502 for help.
If the old thermostat had
W1
,
W2
and
Y
wires, contact a heating/
cooling contractor for help.
If no wire matches the
E
terminal on the new thermostat,
use a small piece of wire to connect terminals
E
and
Aux
.
