Honeywell RTH8500D Thermostat User Manual


 
69-1725-1 8
Step 4. Follow Special Instructions (Cont)
4. If you have only one C and/or C1 wire connected to your old
thermostat, connect this wire to C on the new thermostat.
Visit www.honeywell.com/yourhome
or call Honeywell
Customer Care at 1-800-468-1502 before returning the
thermostat to the store.
Y
C
R
W
OLD THERMOSTAT
WIRE HOLE
M22223
CONNECT TO THE "C" ON THE
NEW THERMOSTAT
WIRE
SCREW
TERMINAL
LETTER
DESIGNATION
G