Installation Guide
Leave metal jumper in place, connecting
R
&
Rc
terminals.
If your old thermostat had both
V
and
VR
wires, stop now and contact a qualified
contractor for help.
If your old thermostat had separate
O
and
B
wires, attach the
B
wire to the
C
terminal. If
another wire is attached to the
C
terminal,
stop now and contact a qualified contractor
for help.
If your old thermostat had
Y1
,
W1
and
W2
wires, stop now and contact a qualified
contractor for help.
If
L
terminal is used,
C
terminal wire must be
connected (contact a contractor if there is
no
C
wire).
If
E
and
Aux
terminals do not each have a
wire connected, use a small piece of wire to
connect them to each other.
Alternate wiring (for heat pumps only)
2
3
3
4
5
5
6
6
5
6
