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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 6.
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.
If your old thermostat had an O wire and not a B wire, attach the O wire to the O/B terminal.
3
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 honeywellhome.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 honeywellhome.com for help.
6
If your old thermostat had both V and VR wires, check honeywellhome.com for help.
7 Leave metal jumper between R and RC terminals in place.
3
2
4
L E AUX G O
F X W F
X2 W1
W2
1
K L G O/B
AUX/E
4 5 6
C
Y R RC
H X
Y1 V R
B
B M VR
C
Y R RC
7
7
HEAT PUMP
MCR33886
69-2715EF—07