Therma-Stor Products Group DEH 3000R owner manual Fan Setting and Operation, To set the operation

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

6.Don’t touch any buttons for several seconds until the display stops flashing, this will save your settings. If you need to change anything go back to step #1.

3.6 Adjusting the relative humidity “SETPOINT”

The DEH 3000R senses the ambient relative humidity (%RH) of the space in which it is located, it comes factory preset to hold 50% relative humidity.

The relative humidity “SETPOINT” (desired RH to be maintained) operates the dehumidifier function of the Ultra-Aire dehumidifier. It has no effect on the optional VENT (fresh air ventilation) or FAN (household air recirculation) functions if they are being used.

Operation

The standard range that the dehumidifier holds around your “SETPOINT” is 3%. With a setpoint of 50%, the dehumidifier will run until the relative humidity reaches 47%. The dehumidifier will then switch off until the relative humidity reaches 53%.

If the setpoint is higher than the ambient relative humidity, the space does not need to be dehumidified so the dehumidifier will not run.

Example: Setpoint: 50% RH

Current condition: 45% RH –The dehumidifier will be off (no “O” indicator will be displayed).

If your setpoint is below the ambient condition, the dehumidifier will be on and “O” will display.

Example: Setpoint: 50% RH

Current condition: 55% RH –The dehumidifier will be on (“O” displayed).

3.7 Fan Setting and Operation

Use the “FAN” button to change the fan operation. There are 2 choices for fan operation: “ON” or “AUTO”. The factory preset is “AUTO”.

“ON” –The fan in the Ultra-Aire dehumidifier will run continuously. This does not affect either the dehumidification or ventilation functions of the system. The system may or may not be ventilating or dehumidifying while the fan is running. This setting is commonly used for maximum air filtration and/or air recirculation.

“AUTO” – Indicates the fan will run when the DEH 3000R calls for dehumidification or ventilation. If the control has not called for dehumidification for 3 hours, the control will automatically run the dehumidifier fan for 10 minutes.

After a dehumidification cycle, the fan automatically shuts off for 10 minutes. This pause allows the water to drain from the dehumidifier.

A solid “O” indicates the fan is operating. A flashing “O” indicates the fan is in a wait mode. No “O” indicates the fan is OFF.

To set the operation:

1.Press and hold the “FAN” button. The current fan setting will begin to flash on the display. Release the button.

2.Press the “FAN” button to toggle between the “ON” and “AUTO” modes.

With the fan in the “AUTO” mode, the fan will operate only when needed by other functions of the system. The fan will remain OFF unless the system is dehumidifying or ventilating. The fan always runs during dehumidification and ventilation and the fan “O” icon will be lit. To completely turn the system OFF, use the “ON/OFF” button as described earlier.

DEH 3000R Dehumidifier & Ventilation System Controller 7 Installation, Operation & Service Manual