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Advanced Installation Guide
Wiring—Heat Pump
Alternate wiring (for heat pumps with auxiliary or
backup heat only)
If labels do not match letters on the thermostat, check
the chart below and connect to terminal as shown here
(see notes, below).
7
5
6
L
E
C
F
X
X
X2
B
Leave metal jumper in place, connecting R & Rc terminals.
If your old thermostat had both V and VR wires, stop now and
contact a qualified contractor for help.
If your old thermostat had separate O and B wires, wrap the B
wire in electrical tape and do not connect.
If your old thermostat had Y1, W1 and W2 wires, stop now and
contact a qualified contractor for help.
Do not use C or X wire. Do not use B wire if you already have O
5
wire. Wrap bare end of wire with electrical tape.
Do not use L wire. Wrap bare end of wire with electrical tape.
6
If your old thermostat had E and Aux wires (or alternate wires),
7
connect both wires to Aux terminal.
Wiring complete, return to Step 7.
69-2580ES—01
3
O
G
B
H
F
B
O
G
24
4
7
Y
AUX
W
Y1
M
W1
W2
Y
1
2
R
RC
V
VR
R
Rc
2
M32728
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