Honeywell RTH8500D Owner's Manual - Page 5

Step 2. Follow Important Instructions

Page 5 highlights

Step 2. Follow Important Instructions 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. OLD THERMOSTAT YELLOW WHITE Y W RED G GREEN RC R ORANGE ! DO NOT WIRE NEW THERMOSTAT BASED ON WIRE COLOR. M22034 5 69-1725-1

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5
69-1725-1
Step 2. Follow Important Instructions
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
OLD THERMOSTAT
RED
WHITE
YELLOW
ORANGE
GREEN
!
DO NOT WIRE
NEW THERMOSTAT
BASED ON
WIRE COLOR.
R