Installing your thermostat
Alternate wiring (heat pump system only)
Use this if your wire labels don’t match the terminal labels.
Note:
You must have
a C wire or equivalent.
See page 6.
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 honeywellhome for help. Attach the
O
wire
to the
O/B
terminal.
If your old thermostat had separate
Y1
,
W1
and
W2
wires, check honeywellhome
for help.
If your old thermostat had both
V
and
VR
wires, check honeywellhome for help.
Leave metal jumper between
R
and
RC
terminals in place.
2
3
1
4
5
6
7
MCR33886
E AUX
X
W
F
H
B
W1
W2
X2
L
O
G
F
C
R
VR
M
V
Y1
B
X
R
Y
RC
HEAT PUMP
AUX/E
G
O/B
Y R RC
K L
C
1
2
3
4
7
6
5
4
