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TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT
Fan Coil System Wiring
C
1
L1
G
(HOT)
Y
24 VAC
O/B
L2
RC
R
HEAT RELAY
COOLING RELAY
LOW FAN RELAY
MEDIUM FAN RELAY
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
Fig. 18. Typical wiring of 4 pipe fan coil.
C
1
L1
G
(HOT)
Y
24 VAC
O/B
L2
RC
R
TWO PIPE HEAT/COOL RELAY
LOW FAN RELAY
MEDIUM FAN RELAY
AUXILIARY HEAT RELAY
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
Fig. 19. Typical wiring of 2 pipe fan coil with reheat.
63-2675—01
3
W1
G2
G3
S1
S2
2
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK
HIGH FAN RELAY
M27423
3
W1
G2
G3
S1
S2
2
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK/CHANGEOVER
PIPE SENSOR
HIGH FAN RELAY
M27424
1
L1
(HOT)
24 VAC
L2
TWO PIPE HEAT/COOL RELAY
LOW FAN RELAY
MEDIUM FAN RELAY
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
OPTIONAL.
Fig. 20. Typical wiring of 2 pipe fan coil without reheat.
PTAC System Wiring
L1
(HOT)
24 VAC
L2
1
CHANGEOVER VALVE
COMPRESSOR CONTACTOR
LOW FAN RELAY
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
3
OPTIONAL.
4
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE
INSTALLER SETUP.
5
OPTIONAL INDOOR REMOTE SENSOR OR REMOTE SETBACK.
WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT
CABLE.
Fig. 21. Typical hookup of PTAC with HI and LO fan speeds
8
3
C
G
Y
O/B
RC
2
R
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK/CHANGEOVER
PIPE SENSOR
HIGH FAN RELAY
3
C
G
Y
O/B
4
RC
2
R
INDOOR TEMPERATURE
SENSOR/REMOTE
HIGH FAN RELAY
(1H/1C).
W1
G2
G3
S1
S2
M27425
W1
G2
G3
S1
S2
5
SETBACK
M27426
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