19
69-2718ES—01
Installing your thermostat
Alternate wiring key (heat pump system only)
Do not use
K
terminal. For future use.
If old thermostat has separate wires on
AUX
and
E
, place both wires into the
E/AUX
terminal. If
old thermostat has wire on
AUX
with a jumper to
E
, place wire on
E/AUX
terminal. No jumper is
required.
If your old thermostat had an
O
wire and not a
B
wire, attach the
O
wire to the
O/B
terminal.
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, check wifithermostat.com for help. Attach the
O
wire
to the
O/B
terminal.
If your old thermostat had separate
Y1
,
W1
and
W2
wires, check wifithermostat.com for help.
If your old thermostat had both
V
and
VR
wires, check wifithermostat.com for help.
Leave metal jumper between
R
and
RC
terminals in place.
2
3
1
4
5
6
7
69-2718ES_A.indd 19
8/13/2012 3:00:24 PM