Honeywell COMMERCIALPRO TB7220U - Manual (Page 7)

TB7220U COMMERCIALPRO™ PROGRAMMABLE THERMOSTAT
7 62-0221—05
Sensor Wiring for Temperature
Averaging
Fig. 17. Wiring four T7770A1006 (20K ohm) Sensors.
Fig. 18. Wiring two TR21-A (10K ohm) Sensors to
provide a temperature averaging network.
Fig. 19. Wiring two TR21 (20K ohm) Sensors and one
TR21-A (10K ohm) sensor to provide a temperature
averaging network
Fig. 20. Wiring four C7189U (10K ohm) Sensors to
provide a temperature averaging network.
M27481
S1 S2
T T
SUBBASE
TR21
T T
TR21
T T
TR21
T T
TR21
M27482
S1 S2
SUBBASE
TR21-A
T4 T3
TR21-A
T4 T3
1
1 1
THE TR21-A IS A 10K OHM SENSOR.
M27483
T4 T3
TR21-A
1
1
THE TR21-A IS A 10K OHM SENSOR.
S1 S2
T T
SUBBASE
TR21
T T
TR21
M23027
WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
1
1
C7189 C7189
C7189 C7189
S1 S2
SUBBASE