If any of the items shown above are missing, call
Honeywell Customer Care at 1-800-468-1502
before returning the thermostat to the store.
369-1716
Step 1. Prepare for Installation (Cont)
2. Check that you have everything required for
the installation:
• Two AAA alkaline batteries
• No. 2 Phillips screwdriver and standard pocket
screwdriver
• Drill
• Drill bit— use 3/16 in. for drywall; use 7/32 in.
for plaster
• Level (optional)
• Hammer
• Pencil
• Electrical tape
69-17164
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
R
RED
W
NEW THERMOSTAT
!
DO NOT WIRE
BASED ON
WIRE COLOR.
M22034
G
GREEN
RC
Y
ORANGE
Step 3. Remove Old Thermostat
569-1716
Step 3. Remove Old Thermostat
1. Turn off power at the heating and/or cooling system
or fuse/circuit breaker panel.
2. Remove the cover from the old thermostat.
3. Remove the old thermostat from the wall or
wallplate. Do not remove the wires.
OLD THERM
Y
G
C
W
R
MERCURY NOTICE
If you are replacing a thermostat that contains mercury in a
sealed tube, do not place your old thermostat in the trash.
Contact your local waste management authority for instructions
regarding recycling and the proper disposal of an old thermostat
containing mercury in a sealed tube.
69-17166
OSTAT
WALLPLATE
.18
.2
.9
.7
.5
L
O
N
R
.4
G
E
.25
.3
THERMOSTAT
COVER
M22036
Step 4. Follow Special Instructions
1. If you have C and/or C1 wire(s) connected to your
old thermostat, do not connect them to your new
thermostat.
2. Disconnect the C and/or C1 wire(s). Make sure
they do not touch each other or any other wires.
3. Wrap the bare end of each C and/or C1 wire(s)
with electrical tape.
OLD THERM
Y
G
C
OSTAT
LETTER
W
DESIGNATION
SCREW
TERMINAL
WIRE
R
WIRE HOLE
DO NOT CONNECT TO NEW THERMOSTAT
M22037
769-1716
Step 4. Follow Special Instructions (Cont)
4. Most installations have two to five wires connected
to the old thermostat. If six or more wires are
connected to your old thermostat (not counting
the C or C1 wires), do not continue the installation.
You may have purchased the wrong thermostat.
Visit www.honeywell.com/yourhome or call
Honeywell Customer Care at 1-800-468-1502
before returning the thermostat to the store.
OLD THERM
Y1
G
W2
Y2
69-17168
OSTAT
SIX WIRES CONNECTED
LETTER
W1
DESIGNATION
SCREW
TERMINAL
WIRE
R
WIRE HOLE
M22038
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 THERM
Y
G
RC
OSTAT
R
LETTER DESIGNATION
W
SCREW TERMINAL
WIRE
WIRE HOLE
WIRES NOT CONNECTED –
DO NOT CONNECT TO
NEW THERMOSTAT
M22040
Step 5. Label and Disconnect Wires from Old
Thermostat
969-1716
Step 5. Label Old Thermostat Wires
1. As you disconnect each wire, use the enclosed wire
labels to wrap a wire label around each wire that
matches the letter designation. Do not allow the
wires to fall into the wall opening after the wires
are disconnected.
2. Remove any remaining parts of the old thermostat
from the wall.
OLD THERM
Y
G
G
RC
C
R
Y
OSTAT
W
When connecting the wires to the new
thermostat, refer to the wire labels. Do not
connect wires to your new thermostat based
on the color of the wire.
69-171610
WIRE LABEL
LETTER
W
DESIGNATION
SCREW
TERMINAL
R
R
WIRE
WIRE HOLE
M22039
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