Honeywell RTH5100B Installation Instructions Manual page 18

Step 7. Connect Wires to New Wallplate (Cont)
NOTES
1 If wires will be connected to both R
thermostat, remove metal jumper between R
metal jumper in place if only one of the terminals, R
be connected on the new thermostat.
If wires were connected to both R and RH terminals on the old
2
thermostat, remove metal jumper between R
thermostat. Connect the old R to the new R
the new R.
3
Do not connect both O and B when wiring to a heat pump.
Connect O to O/B W. Wrap the bare end of the B wire with
electrical tape and do not use.
Transformer common. Wrap the bare end of the wire with
4
electrical tape and do not use.
69-1716
and R on the new
C
18
and R. Leave
C
or R, will
C
and R on the new
C
and the old RH to
C
M22050