Filter
Top Products
69-1081—3 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.
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.
Table 1. Terminal Designations on Old and New Thermostats.
CT3611
a
Typical Terminal
Designations from the
Existing Thermostat
Alternative Terminal Designations
Function Description
Trane
American
Standard Lennox
York
Borg
Warner
General
Electric
Rheem
Ruud
C C C or X C B X B C or B X Common
R RRR R
V or VR
b
RRR Power
Y Y or Y1 Y or Y1 Y or Y1 Y M Y Y Y or Y1 Compressor
W1
c
— — — — — — — — Stage 1 heating relay
W2 W or
W1
W, W1
or W2
W or
W1
W or W1
jumped to U
W1 or Y W or W2 W or W1 W2 Auxiliary heat relay
GGGG GF or GGGG Fan relay
O
a
O
a
O
a
O
a
O
a
R or O
a
O
a
O
a
O
a
Cooling changeover relay
B
a
B
a
B
a
B
a
— — H — — Heating changeover relay
L L L or X L F or L L F F or L L System monitor
E E E E or X X2 or E E X or E E or X2 E Emergency heat relay
— ———
T
d
or A
d
A
d
T
d
T
d
— Tape off, not needed for CT3611