Honeywell Thermostat: TH8320R & TH8321R VisionPro Re: HUMIDITY CONTROL The primary difference between the TH8320R and the TH8321R is humidity control. The TH8321R has a built-in humidity sensor and two U1 terminals to control either Humidification or De-Humidification (one or the...

Honeywell Thermostat: TH8320R & TH8321R VisionPro Re: CONTROL A HUMIDIFIER Both the TH8320R and TH8321R thermostat can be configured for direct-control of a Humidifier. ► The TH8320R does not have an internal humidity sensor or humidifier outputs so you will be required to add additional...

Honeywell Thermostat: TH8320R & TH8321R VisionPro Re: OPERATING A HUMIDIFIER Once a VisionPro thermostat has been configured for Humidification, you can control a humidifier directly from the thermostat interface. To operate a humidifier from a VisionPro thermostat, you must set the...

Honeywell Thermostat: TH8320R & TH8321R VisionPro Re: CONFIGURE THE THERMOSTAT TO DEHUMIDIFY Both the TH8320R and TH8321R thermostat can be configured to dehumidify, however, if you are using a TH8320R you will be required to add additional REDLink accessories. There are two ways that...

Honeywell Thermostat: TH8320R & TH8321R VisionPro Re: OPERATING A DEHUMIDIFIER Once a VisionPro or Prestige thermostat has been Configured for Dehumidification, you can control Summer humidity levels directly from the thermostat interface. To dehumidify from a VisionPro thermostat, you...