Controlled residential ventilation: The right balance is decisive
The ventilation systems are based on a demand-oriented flow through the entire living area. According to the need and the moisture level, fans transport the exhaust air from the bathroom, kitchen, toilet, or laundry room to the outside or into exhaust shafts. This creates a slight negative pressure in the living space. Due to this negative pressure, fresh, filtered air flows through the exterior wall air inlets into the living and bedrooms, children's rooms, and workspaces. Overflow openings in the doors ensure the ventilation connection between supply air and exhaust air rooms. Fresh air transport is thus constantly taking place: from the outside first into the living area, then into the exhaust rooms. Without noise, without wind, without pollutants. The wind pressure safeguard and the volume flow limitation in the supply air elements ensure that no draft occurs. The also integrated silencers guarantee that only fresh air, not noise, enters the house even on busy streets. The moisture and temperature of the air determine the volume flow.
The demand-oriented control of the exhaust air fans was equipped for the first time with a humidity-temperature sensor. This innovative control automatically adjusts the fan level to the ventilation requirement: depending on the relative humidity, the volume flow increases or decreases. This ensures that ventilation is always as much as necessary and as little as possible. The sensor, which is integrated in the intake area of the exhaust air fan, detects the temperature as well as the moisture content of the exhaust air volume flow. Since the fan is installed in the bathroom or toilet and other indoor air conditions occur there than in the living area, an exhaust fan control adapted to the indoor air conditions in the living area is achieved by simultaneously evaluating temperature and humidity: therefore, the control does not only consider the demand in the bathroom but also that of the living spaces and effectively protects against moisture damage and mold growth. The automatic annual timer switches the fan automatically to the lowest level in summer and back to humidity control in the transitional period and winter.
Mold can form already at a relative humidity of 60%
Damp walls insulate worse
Further explanations will surely be gladly provided by €uro.
Source: Lunos
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