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3
Connect wires
1
Match each labeled wire
with same letter on terminal.
2
Use a screwdriver to loosen
screw terminals, insert bare
wires beneath screws, then
tighten screws.
3
Push any excess wire back
into the wall opening.
Labels don’t match?
If labels do not match letters on
thermostat, see table below.
Mount thermostat base
1
Drill holes at pencil-marked
locations (3/16” holes for
drywall, 7/32” holes for
plaster).
[1]
If wires will be connected to both
R
and
Rc
terminals, remove metal jumper.
[2]
Do not connect both
O
and
B
if you have a
heat pump. Connect only the
O
wire. Wrap
B
wire with electrical tape and do not use.
[3]
Do not use
C
,
X
or
B
. Wrap bare end of
wire with electrical tape.
Existing wires
Connect to:
R
•
RH
•
4
•
V
Terminal “
R
”
[1]
Rc
Terminal “
Rc
”
[1]
O
Terminal “
O
”
[2]
B
Terminal “
B
”
[2]
G
•
F
Terminal “
G
”
W
•
W1
•
H
Terminal “
W
”
Y
•
Y1
•
M
Terminal “
Y
”
C
•
X
•
B
Do not use
[3]
2
Use hammer to tap anchors
into holes until flush with
wall.
3
Pull wires through thermo-
stat base and insert screws.
Check level if desired, then
tighten screws.
