Honeywell RTH8580ZW User Manual page 9

Installing your thermostat
Alternate wiring (conventional 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 (conventional system)
Remove metal jumper connecting R and RC only if you must connect both
1
R and RC.
If your old thermostat had both R and RH wires, remove metal jumper.
2
Connect the R wire to the RC terminal, and the RH wire to the R terminal.
3 Do not use K terminal. For future use.
Y2
4
W2
4
K
Rc
Y2
R
W
Y
W2
G
C
7
RC
1
R
2
W
Y
G
C
3
3
MCR35009
33-00131ES—01