GTC – HYGIENIC AIR-GEOTHERMAL HEAT EXCHANGER

airflow, which conducts from outside

The outside air is heated up to temperatures around 0 °C. This prevents the exhaust air from being cooled down to such an extent that the produced condensate starts freezing. The so-called "frost-protection switching" of the ventilation unit which throttles or switches off the supply air flow rate to prevent the heat exchanger from cooling down any further, does not have to be activated. This enables even operation of the ventilation unit. Negative pressures in the building are avoided, since both fans can be operated continuously at the set capacity.

Summer mode:

Additional heating of the rooms is prevented by the outside air being cooled down. This is a very pleasant effect which must, however, not be confused with an air-conditioning system. No active cooling can be achieved due to the low flow rates. Without sufficient shading measures, the rooms will easily heat up.