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TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT
PTAC System Wiring
L1
(HOT)
24 VAC
C
L2
G
1
Y
4
O/B
RC
R
CHANGEOVER VALVE
COMPRESSOR CONTACTOR
LOW FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
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. 16. Typical hookup of PTAC with HI and LO fan
speeds (1H/1C).
L1
(HOT)
C
24 VAC
G
L2
Y
1
O/B
4
RC
R
CHANGEOVER VALVE
COMPRESSOR CONTACTOR
LOW FAN RELAY
HIGH FAN RELAY
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
2
FACTORY INSTALLED JUMPER.
3
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS
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. 17. Typical hookup of PTAC with HI and LO fan
speeds (2H/1C).
62-0273—07
3
2
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK
HIGH FAN RELAY
3
2
INDOOR TEMPERATURE
SENSOR/REMOTE
SETBACK
AUXILIARY HEAT RELAY
Sensor Wiring for Temperature
Averaging
W1
G2
G3
S1
S2
5
Fig. 18. Wiring four TR21 (20K ohm) Sensors.
M27426
W1
G2
G3
S1
S2
Fig. 19. Wiring two TR21-A (10K ohm) Sensors to
provide a temperature averaging network.
5
M27427
1
Fig. 20. Wiring two TR21 (20K ohm) Sensors and one
TR21-A (10K ohm) Sensor to provide a temperature
6
SUBBASE
S1
S2
TR21
TR21
T
T
T
TR21
TR21
T
T
T
SUBBASE
S1
S2
T4
T3
T4
1
TR21-A
TR21-A
1
THE TR21-A IS A 10K OHM SENSOR.
SUBBASE
S1
S2
TR21
T4
T
T
TR21
T
T
THE TR21-A IS A 10K OHM SENSOR.
averaging network
T
T
M27481
T3
1
M27482
T3
1
TR21-A
M27483
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