How to use you SMART Si Thermostat

USING YOUR SMART Si THERMOSTAT

The bright, easy-to-read screen on your Smart Si thermostat makes it simple to review and adjust the settings any time you want.

 

Adjusting the Temperature

You can easily adjust the temperature without changing the Smart Si thermostat’s programming by pressing the arrow keys when the Home screen is displayed.

.       Press ▲ to increase the temperature set point by 1°F (0.5°C).

.       Press ▼ to decrease the temperature set point by 1°F (0.5°C).

.       If the Smart Si thermostat is set to Auto mode, press ◀ to select the Cool setting.

.       If the Smart Si thermostat is set to Auto mode, press ▶ to select the Heat setting.

 

Once you’ve adjusted the temperature, the screen indicates that you are currently holding the set temperature rather than running a program.

The Smart Si thermostat will hold the new temperature for the duration you specified in the Hold Action option during the initial setup (see Hold Action) or until you press OK.

If you are using Auto mode, note that there is a minimum difference allowed between heat and cool set temperatures. The system will prevent you from setting the temperatures to within these limits.

 

System Mode

This menu sets your system to use heat, cool, or auto mode. To change system mode: from the Home screen, press Menu > System Mode > select Heat, Cool, Auto or Off.

  • Cool The system will turn on the air conditioner when the current temperature rises above the set temperature.
  • Heat The system will turn on the heat when the current temperature drops below the set temperature.
  • Auto The system is in Auto-changeover mode and will activate the heating or cooling systems to keep your home within the desired range of set temperatures.
  • Auxiliary Heat Only The system will only use the auxiliary or back-up heat source to maintain the heat set point temperature (only appears if auxiliary heat is configured).
  • Off The system is off and will only display the current temperature.

 

Fan

This menu displays the current furnace fan setting. To change fan settings: from the Home screen, press Menu > Fan.

    • On  Forces the fan to run continuously, regardless of the weekly schedule programming. The fan will also run if the system mode is Off.
    • Auto Turns on the fan when the system is heating or cooling your home, or to satisfy the minimum fan “on” time.
 

When you switch between Auto and ON in fan control, the Smart Si thermostat will prompt you with the following:

  • Hold 2 hours The fan will switch to this setting but revert back to weekly schedule after 2 hours.
  • Hold 4 hours The fan will switch to this setting but revert back to weekly schedule after 4 hours.
  • Indefinite The fan will switch to this setting and will only revert back if you do so manually .
  • Until Next Transition The fan will switch to this setting but will revert back when the program switches to the next period.
  • Update Schedule The fan will update the current schedule with this new fan setting.

After the fan mode is changed and you return to the home screen, the Smart Si thermostat will indicate that it is in a Hold state. The temperature setting will also be set to Hold. Press OK to revert the fan mode back to the weekly schedule fan and temperature settings.

 

Minimum “On”Time  

Sets a minimum amount of time per hour that the furnace fan will run. This improves air circulation and results in a more consistent temperature than with the Auto setting while being more cost-effective than the On setting.