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Installing your thermostat
Alternate wiring (heat pump system only)
Use this if your wire labels don't match the
terminal labels.
Note:
You must have a C wire or equivalent.
See page 9.
Alternate wiring key (heat pump system only)
1
Do not use K terminal. For future use.
If old thermostat has separate wires on AUX and E, place both wires into the E/AUX terminal.
2
If old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. No
jumper is required.
3
If your old thermostat had an O wire and not a B wire, attach the O wire to the O/B terminal.
If your old thermostat had separate O and B wires, attach the B wire to the C terminal. If
4
another wire is attached to the C terminal, check resideo.com for help. Attach the O wire to
the O/B terminal.
5
If your old thermostat had separate Y1, W1 and W2 wires, check resideo.com for help.
6
If your old thermostat had both V and VR wires, check resideo.com for help.
7
Leave metal jumper between R and RC terminals in place.
2
L
E AUX
F
X
W
X2
W1
W2
1
L
K
AUX/E
11
3
4
5
6
4
G
O
C
Y
R
F
H
X
Y1
V
B
B
M
VR
G O/B
C
Y
R RC
69-2715EF—07
RC
R
7
HEAT PUMP
MCR33886
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