Honeywell Heat/1Cool User Guide - Page 24

Fig. 27. Typical wiring diagram for T8611M7008.

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HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE THERMOSTAT LOGIC CIRCUIT POWER SUPPLY SUBBASE LOGIC/ CONTROL CIRCUIT FAN SWITCH ON AUTO S1 S1 S2 S2 S3 S3 6 200905 REMOTE SENSOR HEAT 1 HIGH LIMIT 5 HIGH LIMIT EM. HT. LED (RED) R 4 3 C AUX. HT. LED (GREEN) L MONITOR AUX. HT. RELAY W3 HEAT 3 STAGE 2 RELAY W2 HEAT 2 EM. HT. RELAY E SYSTEM SWITCH EM. HT. HEAT OFF AUTO COOL COOL 1 FAN RELAY G COOL CHANGEOVER C. O. VALVE O C. O. HEAT CHANGEOVER VALVE B STAGE 1 COMPRESSOR CONTACTOR Y STAGE 2 COMPRESSOR CONTACTOR Y2 COOL 2 X1 2 CHECK LED (YELLOW) X2 L1 (HOT) L2 1 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 POSSIBLE CHECK LED CIRCUITS: X1 TO R CHECK LED FAULT DETECTION SWITCH (YELLOW) X2 TO C X1 TO R CHECK LED (YELLOW) FAULT DETECTION SWITCH X2 TO C X1 CHECK LED SWITCHING DEVICE (YELLOW) 24 VAC X2 L1 (HOT) L2 SWITCH TO R (POWER) SIDE OF SYSTEM TRANSFORMER SWITCH TO C (COMMON) SIDE OF SYSTEM TRANSFORMER SWITCH IN SECONDARY OF SEPARATE TRANSFORMER 3 SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL. 4 NOMINAL 24 VAC POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATIONS. 5 AVAILABLE ONLY ON MODLES WITH SEPARATE SENSOR FOR REMOTE TEMPERATURE SENSING. 6 RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 FT. (61 M) MAXIMUM LENGTH. ROUTE INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE. Fig. 27. Typical wiring diagram for T8611M7008. M2656 70-6627 • 22

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70-6627
•
22
Fig. 27. Typical wiring diagram for T8611M7008.
L1
(HOT)
L2
X1
X2
CHECK
LED
(YELLOW)
FAULT DETECTION
SWITCH
SWITCH TO R (POWER) SIDE
OF SYSTEM TRANSFORMER
TO C
TO R
X1
X2
CHECK
LED
(YELLOW)
SWITCHING
DEVICE
SWITCH IN SECONDARY OF
SEPARATE TRANSFORMER
X1
X2
CHECK
LED
(YELLOW)
FAULT DETECTION
SWITCH
SWITCH TO C (COMMON) SIDE
OF SYSTEM TRANSFORMER
TO C
TO R
24 VAC
L1
(HOT)
L2
1
4
3
1
2
X1
X2
CHECK
LED
(YELLOW)
2
5
6
3
4
5
6
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
POSSIBLE CHECK LED CIRCUITS:
THERMO-
STAT
LOGIC
CIRCUIT
SUBBASE
LOGIC/
CONTROL
CIRCUIT
POWER
SUPPLY
FAN
SWITCH
ON
AUTO
EM. HT.
LED
(RED)
AUX. HT.
LED (GREEN)
HIGH
LIMIT
HIGH
LIMIT
HEAT 1
S1
S1
S2
S2
S3
S3
200905 REMOTE
SENSOR
STAGE 2 COMPRESSOR
CONTACTOR
STAGE 1 COMPRESSOR
CONTACTOR
HEAT CHANGEOVER
VALVE
COOL CHANGEOVER
VALVE
FAN RELAY
EM. HT. RELAY
STAGE 2
RELAY
AUX. HT.
RELAY
MONITOR
SYSTEM
SWITCH
EM. HT.
HEAT
OFF
AUTO
COOL
COOL 1
COOL 2
C. O.
C. O.
HEAT 2
HEAT 3
SOME OLDER HEAT PUMP THERMOSTATS USE X FOR COMMON TERMINAL.
NOMINAL 24 VAC POWER MUST BE PRESENT BETWEEN R AND C TERMINALS FOR THERMOSTAT OPERATIONS.
AVAILABLE ONLY ON MODLES WITH SEPARATE SENSOR FOR REMOTE TEMPERATURE SENSING.
RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 FT. (61 M) MAXIMUM LENGTH.
ROUTE INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE.
M2656
Y2
Y
B
O
G
E
W2
W3
L
C
R
HEAT PUMP THERMOSTAT CROSS REFERENCE/SELECTION GUIDE