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10 11
B
GAS
ELEC
CGOY
WRHBRC
2.3.1 Detach the new thermostat’s wallplate from the rest of the
thermostat and position the wallplate on the wall according to
the illustration below, passing the labeled wires through the
wire hole in the center of the wallplate.
2.3.2 With the wallplate fl ush against the wall, mark mounting holes
with a pencil.
2.3 Install new thermostat’s wallplate
Do not allow wires to touch each other or parts on
the thermostat. Doing so could result in damage to your heating and
cooling unit.
2.3.3 Move the wallplate aside. Drill the mounting holes using a 3/16"
drill bit. With a hammer, tap the wall anchors, provided in the
package, into the drilled holes.
2.3.4 Position the wallplate on the wall again and screw the mounting
screws into the wall anchors. Do not use a power screwdriver,
you may damage your thermostat.
Wallplate
Mounting hole
2.4 Match and connect wires
2.4.1 Match each wire coming from the wall to its corresponding
terminal, as shown in the illustration below. Insert each wire into
the hole on the side of its matching terminal. Using a screwdriver,
tighten the screw securely. DO NOT REMOVE THE WIRE LABELS.
A maximum of one wire from the wall can be wired
into each terminal.
W
W
CGOY
Y
O
G
C
RH
RH
B
B
RC
RC
No thermostat installation uses all of the wires shown below.
In most cases, between 4 and 5 terminals are wired. The remaining
terminals will not be used.
2.4.2 In the new thermostat, a jumper wire
connects the RC and RH terminals.
If, in your OLD thermostat… Then…
Terminals RC and RH (or 5, or R5) …leave the jumper wire in place
were connected by a jumper wire, in the new thermostat.
There was a terminal R, which you then …leave the jumper wire in place
labeled RC according to 2.2.2, in the new thermostat.
Terminals RC and RH (or 5 or R5) …remove the jumper wire from the
were NOT connected by a jumper wire, new thermostat.
If you’re not sure whether terminals RC and RH were connected in your old
thermostat, refer to your notes made in section 2.2.2.