URC THZ-100 Owners Manual - Page 27

THZ-100 THERMOSTAT If the Fan Modes screen times out and goes back to the main screen without pressing the OK button, no change is made to the fan mode. In On mode the fan operates continuously regardless of the equipment operation. Selecting the Fan to Cycle Periodically If you desire the system fan to cycle on and off periodically then use the arrow keys to move the highlight bar to Cycle. Press the key below the OK key label in the smart-key label at the bottom right of the display to select this new mode. If you decide to cancel the operation then press the key below the Cancel key label in the smart-key label at the bottom left of the display. If the Fan Modes screen times out and goes back to the main screen without pressing the OK button, no change is made to the fan mode. In Cycle mode, the fan cycles on for 10 minutes then off for 10 minutes. If the system turns on for a heating or cooling cycle then the fan stays on for that complete cycle then turns off for 10 minutes and back on for 10 minutes until the next cooling or heating cycle. Selecting the Fan On Only with HVAC Equipment If you desire the system fan to turn on only when the HVAC system equipment is on then use the arrow keys to move the highlight bar to Auto. Press the key below the OK key label in the smart-key label at the bottom right of the display to select this new mode. If you decide to cancel the operation then press the key below the Cancel key label in the smart-key label at the bottom left of the display. If the Fan Modes screen times out and goes back to the main screen without pressing the OK button, no change is made to the fan mode. In Auto mode, the fan turns on any time the heating or cooling system cycles on and turns off when the system turns off and has gone through any required cool down time. Page 23