TABLE OF CONTENTS
Wiring terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
WIRING DIAGRAMS
Conventional heat/cool single transformer . . . . . . . . . . 5
Conventional heat/cool two transformer . . . . . . . . . . . 5
Heat pump single transformer . . . . . . . . . . . . . . . . . . . . 5
Heat pump two transformer . . . . . . . . . . . . . . . . . . . . . 5
Indoor Air Quality equipment - dehumidifier . . . . . . . . 6
Indoor Air Quality equipment - humidifier . . . . . . . . . . 6
Indoor Air Quality equipment - ventilation . . . . . . . . . . 6
10009857 B2205748D 2.17
Model 8620 Thermostat with
Event-Based
Humidity or Ventilation Control
Safety & Installation
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REFERENCES
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Air Cleaning and
™
Instructions