Honeywell RTH8500D Owner's Manual - Page 9
Old Thermostat
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Step 4. Follow Special Instructions (Cont) 5. If you find any wires not connected to your old thermostat, do not connect them to your new thermostat. 6. Wrap the end of the wires that are not connected with electrical tape. OLD THERMOSTAT Y G RC W R LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE WIRES NOT CONNECTED - DO NOT CONNECT TO NEW THERMOSTAT M22040 9 69-1725-1
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9
69-1725-1
Step 4. Follow Special Instructions (Cont)
5.
If you find any wires not connected to your old thermostat, do
not connect them to your new thermostat.
6.
Wrap the end of the wires that are not connected with electrical
tape.
Y
G
R
C
R
OLD THERMOSTAT
WIRE HOLE
WIRES NOT CONNECTED –
DO NOT CONNECT TO
NEW THERMOSTAT
M22040
WIRE
SCREW TERMINAL
LETTER DESIGNATION
W