4
1.4 Wire the thermostat.
Is the thermostat wired directly to
the equipment?
• If the thermostat is wired directly
to the equipment:
a Refer to the table and wiring
diagrams on the next page.
b Turn on 24VAC NOW.
24VAC (C wire) is required to
connect RedLINK accessories.
• If the thermostat is used with an
Equipment Interface Module or
TrueZONE Wireless Adapter,
power the thermostat using Rc
and C terminals or with batteries.
NOTE: The relay outputs and
inputs on the thermostat do
not function when used with an
Equipment Interface Module or
TrueZONE Wireless Adapter.
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
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
1.5 With thermostat removed from
sub-base, insert the coin cell
battery.
NOTE: On some models the coin
cell battery compartment slides
out from the left side of the
thermostat when viewing it from
the back (not pictured).
1.6 Mount thermostat on wallplate.
NOTE: If your thermostat has
hinges at the bottom of the
wallplate as shown, insert the
thermostat into the hinges, then
push the top toward the wall
until it snaps together.
Updated models do not have
hinges. On those models push
evenly along the sides and
bottom of the thermostat to
connect it to the wallplate.
Thermostat
Wallplate