Honeywell CT87B Owner's Manual - Page 8

Fig. 11. CT87B for a 5-wire heating/cooling system. - ct87a

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Page 8 highlights

CT87A,B,J ROUND® THERMOSTAT Fig. 11. CT87B for a 5-wire heating/cooling system. COOL • OFF • HEAT FAN ON RH G RC Y W AUTO • CT87B SUBBASE HEATING POWER FAN TO SYSTEM COOLING POWER TO SYSTEM COOL HEAT Fig. 12. CT87J for a 4-wire single stage heat pump. M20225 COOL • OFF • HEAT FAN ON WG Y P R B O JUMPER W TO Y AUTO • CT87J SUBBASE HEAT FAN TO SYSTEM POWER COOL REVERSING VALVE HEAT REVERSING VALVE DO NOT ATTACH WIRES TO BOTH B AND O M20186 Fig. 13. CT87J for 4-wire single stage heat pump. CT87J SUBBASE HEAT FAN ON FAN COOL • OFF • AUTO • POWER WG 1Y P R B O HEAT REVERSING VALVE COOL REVERSING VALVE TO SYSTEM HEAT PUMP COMPRESSOR DO NOT ATTACH WIRES TO BOTH B AND O 1 IF WIRES ARE ATTACHED TO Y OR W, AND P ON YOUR OLD THERMOSTAT, CONTACT YOUR LOCAL CONTRACTOR FOR FURTHER ASSISTANCE. M20228 69-0274-6 8

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CT87A,B,J ROUNDfi THERMOSTAT
69-0274-6
8
Fig. 11. CT87B for a 5-wire heating/cooling system.
Fig. 12. CT87J for a 4-wire single stage heat pump.
Fig. 13. CT87J for 4-wire single stage heat pump.
C
O
O
L
•
O
F
F
•
H
E
A
T
F
A
N
O
N
•
A
U
T
O
M20225
HEATING
POWER
CT87B SUBBASE
TO
SYSTEM
TO
SYSTEM
R
H
G
R
C
W
Y
FAN
HEAT
COOLING
POWER
COOL
C
O
O
L
•
O
F
F
•
H
E
A
T
F
A
N
O
N
•
A
U
T
O
M20186
HEAT
CT87J SUBBASE
TO
SYSTEM
WG
Y
P
B
R
O
FAN
POWER
DO NOT
ATTACH WIRES
TO BOTH B AND O
JUMPER W TO Y
COOL
REVERSING VALVE
HEAT
REVERSING VALVE
C
O
O
L
•
O
F
F
•
H
E
A
T
F
A
N
O
N
•
A
U
T
O
M20228
CT87J SUBBASE
TO
SYSTEM
W
G
Y
P
B
O
R
POWER
FAN
DO NOT
ATTACH WIRES
TO BOTH B AND O
HEAT PUMP
COMPRESSOR
COOL
REVERSING
VALVE
HEAT
REVERSING
VALVE
1
1
IF WIRES ARE ATTACHED TO Y OR W, AND P ON YOUR OLD
THERMOSTAT, CONTACT YOUR LOCAL CONTRACTOR FOR
FURTHER ASSISTANCE.