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13
Attach all wires securely to the new thermostat.
Note: A wire must be connected to “24COM” to power the thermostat.
Use the information from step 12 to match the wires to the correct terminals.a.
Use 1/8” blade screwdriver to secure wires in terminals.b.
24COM
24RC
24RH
W1
W2/0
G
CAUTION: EQUIPMENT DAMAGE HAZARD - Improper wiring can lead to equipment damage.
Follow the Terminal Connection information from step 12 carefully to ensure the control is wired properly. After
wires are secure, bare wires MUST NOT touch each other.
14
If necessary, cut the internal jumper wire (JP1).
Skip this step if there is a single wire connected to either “24RC” or
“24RH”. However, if there is a wire connected to BOTH “24RC” and
“24RH”, see the information below about cutting the JP1 jumper.
If terminals 24RC and 24RH both have wires connected to them,
the JP1 jumper wire must be cut. The jumper is located on back of the
thermostat face as shown in the illustration to the right.
IMPORTANT - Before cutting the JP1 jumper, recheck the labels on your
wiring against the chart on page 12 to verify that both terminals (24RC
and 24RH) were used on the old thermostat and should have wires
connected to them on the new thermostat.
24COM
24RC
24RH
W1
W2/0
G
Y1
Y2
24COM
24RC
24RH
W1
W2/0
G
Y1
Y2
JP1
JP1
2
2
2
CUT JUMPER TO
SPLIT RC/RH
JP1
2
2
2
CUT JUMPER TO
SPLIT RC/RH
16
Turn power to heating and cooling system back on.
The thermostat display should turn on and begin displaying information. If the thermostat display does not come on, go back
through the installation steps and look for problems. Pay special attention to steps 3 and 12.
15
Attach the thermostat face to the wall plate.
Tuck wiring fl at inside the wall plate.a.
Carefully place the face plate against wall plate while aligning pins into wire b.
terminals.
Push thermostat face into wall plate until it is secure.c.
If thermostat face does not easily slide into wall plate,
DO NOT force it. Check alignment of pins on back of thermostat
face. Also, make sure wiring is pressed fl at and is not bunched
together.
24COM
24RC
24RH
W1
W2/0
G
Y1
Y2
Wires
pressed flat
6