Honeywell RTH9580 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)
1
Do not use K terminal. For future use.
2
Leave jumper loop in place.
If your old thermostat had both V and VR wires, check wifithermostat.com for help.
3
If your old thermostat had separate O and B wires, attach the B wire to the C
4
terminal. If another wire is attached to the C terminal, check wifithermostat.com
for help. Attach the O wire to the O/B terminal. On the Type of Changeover Valve
screen, select Cooling Changeover Valve. See page 28. 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 Y1, W1, and W2 wires, check
5
wifithermostat.com for help.
If the old thermostat has separate wires on Aux and E, use a wire nut to attach
6
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
7
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
3
2
8
O
C
B
X B
Y
G
Rc
R
AUX
R
X X2 W W1
V VR
Y2
L
F
Wallplate
LEVEL
HERE
Thermostat
4
5
6
W2
7
MCR34542
M34498