Honeywell TB8220U Sensor Wiring for Temperature Averaging

TB8220U COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT

7 62-3070—03

Sensor Wiring for Temperature Averaging

Fig. 18. Wiring four T7770A1006 (20K ohm) Sensors.

Fig. 19. Wiring two T7770A3002 (10K ohm) Sensors to

provide a temperature averaging network.

Fig. 20. Wiring two T7770A1006 (20K ohm) Sensors

and one T7770A3002 (10K ohm) sensor to provide a

temperature averaging network

Fig. 21. Wiring four C7189U (10K ohm) Sensors to

provide a temperature averaging network.

M22831

S1 S2

SUBBASE

T7770A

M22933

S1 S2

SUBBASE

T7770A3002

T4 T3

T7770A3002

T4 T3

THE T7770A3002 IS A 10K OHM SENSOR.

M22934

T4 T3

T7770A3002

THE T7770A3002 IS A 10K OHM SENSOR.

S1 S2

SUBBASE

T7770A1006

M22935

WIRES MUST HAVE A CABLE SEPARATE FROM

THE THERMOSTAT CABLE.

C7189 C7189

Contents

Main INSTALLATION INSTRUCTIONS 62-3070-03 TB8220U Commercial VisionPRO Programmable Thermostat APPLICATION MERCURY NOTICE INSTALLATION When Installing this Product... WIRING Terminal A Wiring Details for Economizers 62-307003 4 Conventional System Wiring Fig. 7. Typical wiring of single transformer 1H/1C system. Fig. 11. Typical hookup of cool-only system. Fig. 8. Typical hookup of dual transformer 1H/1C system. Fig. 9. Typical hookup of heat-only system. 5 62-307003 62-307003 6 Heat Pump System Wiring Fig. 14. Typical hookup of single-stage heatpump with no auxiliary heat (1H/1C). Fig. 15. Typical hookup of multistage heatpump with no auxiliary heat (2H/2C). Fig. 16. Typical hookup of single-stage heatpump with auxiliary heat (2H/1C). Fig. 17. Typical hookup of multistage heatpump with auxiliary heat (3H/2C). Sensor Wiring for Temperature Averaging Fig. 18. Wiring four T7770A1006 (20K ohm) Sensors. Fig. 19. Wiring two T7770A3002 (10K ohm) Sensors to provide a temperature averaging network. Fig. 21. Wiring four C7189U (10K ohm) Sensors to provide a temperature averaging network. POWER THE THERMOSTAT Wiring 24 Vac Common Installing Batteries Setting Calendar and Time Setting Calendar CAUTION Page Page OPERATION System Settings Fan Settings Minimum-Off Timer Compressor Protection Outdoor or Indoor Temperature Sensor Economizer/TOD Logic (Table 6) Heat Pump Temperature Lockouts Dual Fuel Heat Pump and Outdoor Sensor Heat Pump with Auxiliary (Backup) Heat and Outdoor Temperature Sensor TROUBLESHOOTING (TABLE 7) Page SPECIFICATIONS Perchlorate Material