Therma-Stor Products Group 90H 5.3B Setting, 5.3C On/Off Setting, 5.3D Setting Clock Time

FOR HVAC INSTALLER AND HOMEOWNER

8.Verify additional optional control operations such as fan interlock or lockout.

9.Proceed to operation/setting section.

FOR INSTALLER & HOMEOWNER:

5.3Operation 5.3A Display

•When there is power to the control, the control display will show the time, day, humidity, and temperature.

•When the control is turned on, the setpoint, fan status, auto/hold mode, and fresh air vent status is displayed.

•When a key is pressed the display will light.

•The “Time” and “Day” is displayed at the top of the screen.

•RH and Temperature are displayed in real time.

•An “O” before the set point, vent, or fan indicates the unit is operating the device.

•A flashing “O” before the set point, vent, or fan indicates the unit is in a delay prior to operating the device.

Note: Delay is an intentional factory installed time delay cycle that is meant to prevent short cycles, extending the life of the Ultra-Aire. If a delay is encountered, WAIT 10 MINUTES BEFORE EXPECTING NORMAL OPERATION.

5.3B Setting

During the set-up process, if you make a mistake, simply continue. You can always go back to adjust the settings. If you leave the control alone and don’t touch any buttons for 10 seconds, the control will remember any changes made and return to “home.”

5.3C On/Off Setting

Press the “ON/OFF” button to turn the system on or off. When the system is on, the setpoint, fan status, auto/hold mode, and fresh air vent status is displayed. In the off mode, the control will show the time, day, humidity, and temperature. When the unit is shipped, it is in manual mode.

5.3D Setting Clock Time

1.Press and hold the “CLOCK” button. The hour display will flash. Release the button.

2.Use the “UP/DOWN RH” buttons to change the value.

3.Press the “CLOCK” button again and the minute display will flash. Use the RH buttons to change the value.

4.Press the “CLOCK” button again and the “AM/PM” display will flash. Use the RH buttons to toggle the value.

5.Press the “CLOCK” button again and the day display will flash. Use the “RH” buttons to change the value.

If the “CLOCK” button is pressed again or no button is pressed for 5 seconds, the display will automatically return to “home.”

5.3E Setting Relative Humidity Setpoint

The relative humidity setpoint (the average RH that is maintained) operates the dehumidifier function of the Ultra- Aire. It has no effect on any other function of the unit. The control senses the ambient relative humidity of the space in which it is located.

13 Ultra-Aire 90H Installer’s & Owner’s Manual