Installation Guide
If labels do not match letters on the thermostat,
check the chart at right and connect to terminal
as shown here (see notes, below).
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
