Honeywell RTH8500D User Manual

5

69-1725-1

1. Do not connect the wires to the new thermostat based on wire 

color because damage can occur to the heating and/or cooling 

system.

These Installation Instructions explain later how to use the 

enclosed wire labels to correctly mark the wires connected to 

your old thermostat.

M22034

Y

G

RC

W

RED

WHITE

YELLOW

ORANGE

GREEN

R