Programmable input

The programmable input can be used to compensate for negative pressure caused by a central vacuum system or cooker hood, for example. When the building automation system detects that the device has been turned on, it sends a signal to the digital programmable input. The ventilation unit adjusts the air flows according to the values set.

Note:

The ventilation unit has two digital inputs (digital input 1 and digital input 2). You can set the programmable input to activate from either digital input, but there is only one programmable input profile. Therefore, both digital inputs have the same settings.

To programme an input:

  1. Select Programmable input, 0 V / 24 V, for one digital input. See section Input settings.
  2. Set the duration of the programmable input in hours and minutes.
  3. Set the air flows of the programmable input’s supply air fan and extract air fan (l/s or m3/h).
    Note:
    When compensating for differences in pressure, the difference between the supply and extract air flows should not exceed 30%.
  4. Set the target supply air temperature for the programmable input. The temperature range is +5°C – +25°C. The factory setting is 15°C.

    In addition to the aforementioned expert settings, the MyVallox MyVallox Home/Cloud user interface can be used to enable or disable a timer.