Honeywell Smart Series User Manual page 10

Installing your thermostat
Alternate wiring (Heat Pump System)
Use this if your wire labels
don't match the terminal labels.
Note: You must have a C wire
or equivalent. See page 5.
Alternate wiring key (Heat Pump System)
If you have both an R and Rc wire, unplug the jumper loop by pulling on the wire
1
loop.
If your old thermostat had both R and RH wires, connect the R wire to the Rc
terminal, the RH wire to the R terminal, and unplug the jumper loop.
If your old thermostat had both V and VR wires, check
2
honeywellhome.com/wifi-thermostat for help.
3
If your old thermostat had separate O and B wires, and is controlling a single zone
heat pump system, attach the B wire to the C. If there is more than one thermostat
controlling the system, call Resideo zoning at 800-828-8367 for wiring assistance.
4 If your old thermostat had separate Y1, W1, and W2 wires, check
honeywellhome.com/wifi-thermostat for help.
5
If the old thermostat has separate wires on Aux and E, use a wire nut to attach
both wires to a separate wire. Slide this third wire into the W2-Aux/E terminal.
This is the system monitor. If the monitor finds a problem, you will see an orange
6
alert button on the thermostat home screen.
7 Attach thermostat to wallplate.
Align the thermostat with the
wallplate and then snap into
place.
69-2715EF—07
1
2
1
8
O
C
B
X B
Y
G
Rc
R
AUX
R
W W1
X X2
V VR
Y2
L
F
Wallplate
LEVEL
HERE
Thermostat
3
4
5
W2
6
MCR36752
M34498A