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3 69-1726—1
Step 1. Prepare for Installation
1. Check that the following items are included:
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.
CAUTION
TURN OFF POWER to system at the furnace, or at the fuse/circuit
breaker panel before you begin.
Match the letter of
y
our old thermostat wire with the terminal of th
e
correspondin
g
letter on
y
our new thermostat or base
.
Ó
N
e
ll.
co
m
/
y
ou
rh
o
m
e
B
G
R
V
/
V
R
X
B
G
R
V
/
V
R
H
Y2
H
R
C
W
C
L
RH
W1
X2
E
O
T
W2
F
P
U
W3
Y1
F
P
U
W3
Y1
WALLPLATE
THERMOSTAT
M2227
8
MOUNTING SCREWS (2)
AND WALL ANCHORS (2)
OWNER'S GUIDE
CAUTION CARD
WIRE LABELS
M
on
R
ead
a
n
d
sa
v
e
th
ese
in
s
tr
uc
ti
o
n
s
OWNER'S GUIDE
fusibles-interru
p
tor
t
é