Control settings

The ventilation unit’s sensors measure the air temperature, relative humidity and carbon dioxide content.

This section describes how to adjust the following sensor settings:
  • Adjustment of the temperature of air flowing into the apartment

  • Adjustment of humidity control

    Humidity control refers to a function the ventilation unit uses to control ventilation based on the relative humidity of room air. If more than one humidity sensor is in use, the fan speed is adjusted according to the highest level.

  • Humidity limit

    The humidity limit refers to the air’s relative humidity level. If this level is exceeded, the ventilation unit boosts ventilation.

  • Carbon dioxide limit

    The carbon dioxide limit refers to the air’s carbon dioxide content. When the limit value is exceeded, the ventilation unit boosts ventilation. If more than one carbon dioxide sensor is in use, the fan speed is adjusted according to the highest level. The carbon dioxide sensor is an optional accessory.

    Note:

    The indicative maximum carbon dioxide content of good room air is 900 ppm.

    Other limits related to carbon dioxide content:
    • 1200 ppm — Limit of acceptable indoor air
    • 700 ppm — Limit of excellent indoor air

    Source: Classification of Indoor Environment 2018