Honeywell RTH8500 Wi-Fi Series Thermostat User Guide
Installing your thermostat
Alternate wiring (heat pump system only)
Use this if your wire labels don’t match the terminal labels.
HEAT PUMP
Metal Jumper
Note: You must have
a C wire or equivalent.
See page 6.
RC
Y2
RC
R
1
2
R
5
L
O
O/B
Y
6
3
4
E/AUX
AUX
Y
7
K
G
C
G
3
C
MCR33530A
Alternate wiring key (heat pump system only)
Leave metal jumper between R and RC terminals in place.
1
2
If your old thermostat had both V and VR wires, check wifithermostat.com for help.
If your old thermostat had separate O and B wires, attach the B wire to the C terminal. If
another wire is attached to the C terminal, check wifithermostat.com for help. Attach the O wire
to the O/B terminal. Set System Function 0190 to 0 (see page 22).
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 Y1, W1 and W2 wires, check wifithermostat.com for help.
4
5
This is the system monitor. If the monitor finds a problem, you will see a red light in the upper
right corner of the thermostat (shines through the cover).
If old thermostat has separate wires on AUX and E, place both wires into the E/AUX terminal. If
old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. No jumper is
required.
6
7
Do not use K terminal. For future use.
33-00133EF—01
8
| General | Details |
|---|---|
| Name | Honeywell RTH8500 Wi-Fi Series Thermostat User Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.23 MB |
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