Honeywell CT3611 Owner's Manual page 8

IMPORTANT
If you have any wiring questions, contact Honeywell at www.honeywell.com/yourhome or call Honeywell
Customer Relations Center, toll-free, 1-800-468-1502.
Typical Terminal
Designations from the
a
CT3611 Existing Thermostat
C C C or X
R R R
Y Y or Y1 Y or Y1 Y or Y1
c — —
W1
W2 W or W, W1
W1 or W2
G G G
a a a
O O O
a a a
B B B
L L L or X
E E E
— — —
a
Never attach wires to both the O and B terminals on the CT3611. If the old thermostat had wires on both the O and B
terminals, be sure to attach the B wire to the CT3611 C terminal. If another wire is already matched to the C terminal,
contact Honeywell.
b
If the old thermostat had separate wires on both the V and VR terminals, some system modification is required. Call
your local heating and cooling contractor for assistance.
c
If the old thermostat had wires on W1, Y1 and W2 terminals, then remove the CT3611 factory-installed jumper
between Y and W1 terminals and match the old W1 to W1, Y1 to Y and W2 to W2.
d
Use electrical tape to tape off the end of the wire and push the taped end back into the wall wiring hole.
69-1081—3
Table 1. Terminal Designations on Old and New Thermostats.
Alternative Terminal Designations
Trane
American
Standard
C B
R R
V or VR
Y
— —
W or W or W1
W1 jumped to U
G G
a a
O O
—
a
B
L F or L
E or X X2 or E
— d d
T or A
York
Borg General
Lennox Warner Electric
X B C or B
R
b
M Y
— — —
W1 or Y W or W2 W or W1
F or G G
a a
R or O O O
— H —
L F F or L
E X or E E or X2
d d
A T T
8
Rheem
Ruud Function Description
X
R R
Y Y or Y1
— Stage 1 heating relay
W2 Auxiliary heat relay
G G
Cooling changeover relay
a a
O
— Heating changeover relay
L
E Emergency heat relay
d — Tape off, not needed for CT3611
Common
Power
Compressor
Fan relay
System monitor