TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT
63-2675—03 8
Fan Coil System Wiring
Fig. 18. Typical wiring of 4 pipe fan coil.
Fig. 19. Typical wiring of 2 pipe fan coil with reheat.
Fig. 20. Typical wiring of 2 pipe fan coil without reheat.
PTAC System Wiring
Fig. 21. Typical hookup of PTAC with HI and LO fan speeds
(1H/1C).
COOLING RELAY
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK
HEAT RELAY
LOW FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
1
2
3
C
G
Y
O/B
RC
R
W1
G2
G3
S1
S2
2
3
L1
(HOT)
L2
1
24 VAC
M27423
HIGH FAN RELAY
MEDIUM FAN RELAY
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK/CHANGEOVER
PIPE SENSOR
TWO PIPE HEAT/COOL RELAY
LOW FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
1
2
3
C
G
Y
O/B
RC
R
W1
G2
G3
S1
S2
2
3
L1
(HOT)
L2
1
24 VAC
M27424
HIGH FAN RELAY
AUXILIARY HEAT RELAY
MEDIUM FAN RELAY
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK/CHANGEOVER
PIPE SENSOR
TWO PIPE HEAT/COOL RELAY
LOW FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
1
2
3
C
G
Y
O/B
RC
R
W1
G2
G3
S1
S2
2
3
L1
(HOT)
L2
1
24 VAC
M27425
HIGH FAN RELAY
MEDIUM FAN RELAY
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK
COMPRESSOR CONTACTOR
M27426
CHANGEOVER VALVE
1
2
3
4
5
LOW FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE
INSTALLER SETUP.
OPTIONAL INDOOR REMOTE SENSOR OR REMOTE SETBACK.
WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT
CABLE.
3
L
(HOT)
L2
1
24 VAC
5
C
G
Y
O/B
RC
R
4
2
W1
G2
G3
S1
S2
HIGH FAN RELAY
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