3
1.1 Separate wallplate from thermostat.
Press button on top and pull to
remove the wallplate.
1.3 Connect power.
1.3a Insert supplied AA alkaline
batteries for primary or backup
power.
S1
S1
W
Y
G
W2
Y2
A
S1
S1
O/B
Y
G
AUX
-E
Y2
L/A
K
RC
R
U1
U1
U2
U2
C
CONVENTIONAL
HEAT PUMP
1.3b For 24VAC primary power,
connect common side of
transformer to C terminal.
1.2 Mount wallplate as shown.
Mount new wallplate using screws
and anchors included with the
thermostat.
Drill 3/16-in holes for drywall.
Drill 7/32-in holes for plaster.
Thermostat (back view)
Wallplate
(back view)
Wallplate
S1
S1
W
Y
G
W2
Y2
A
C
K
R
C
R
U1
U1
U2
U2
S1
S1
O/B
Y
G
AUX
-E
Y2
L/A
Thermostat
Button
1
Installing the thermostat