Setting the supply air temperature control method

The supply air temperature control method defines how the ventilation unit controls the temperature of inflowing air. The control method determines how the unit reacts to changes in indoor and outdoor air temperature. The temperature setting (+5…+25°C, recommendation: +18°C) is set in the ventilation mode (At Home, Away, Boost, Custom) settings.

To change the supply air temperature control method:

  1. Select Settings.
  2. Select Expert settings with the arrow buttons.
  3. Select OK.
  4. Select Control settings with the arrow buttons.
  5. Select OK.

    The Control settings screen opens:

  6. Use the arrow buttons to select the control method of the supply air temperature.

    The options are Supply air, Extract air, and Cooling.

    • Use the Supply air setting to set the target supply air temperature (+5…+25 °C). The ventilation unit strives to maintain this temperature.
      • If the air temperature is lower than the target supply air temperature after the air has passed through the HR cell, the ventilation unit activates the post-heating resistor.
      • If heating the supply air is not necessary, the HR cell is bypassed.
    • Use the Extract air setting to set the target indoor air temperature. The ventilation unit strives to maintain this temperature. The supply air temperature varies according to the indoor air temperature.
      • If the extract air temperature is lower than the supply air temperature set for the active ventilation mode, the unit increases the supply air temperature (max. 10°C). If necessary, the unit uses the post-heating resistor.
      • If the extract air temperature is higher than the supply air temperature set for the active ventilation mode, the unit reduces the supply air temperature (max. 10°C). If heating the supply air is not necessary, the HR cell is bypassed.
    • The Cooling setting works similarly to the Extract air setting, but the ventilation unit boosts the air flows, as necessary.
    NOTE:

    If the outdoor air is warmer than the indoor air, the ventilation unit is not able to cool the supply air. If the outdoor air is colder than the indoor air, it is recommended partial bypass be activated to maintain the target supply air temperature.

  7. Select OK.
The temperature control method has now been set.