| Airing to install between ceilings
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The flat airing for the air exchange of single appartments photographed from below. The unit is special designed for the installation between ceilings.
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| 60 squaremeter heat exchanger
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Not out of plates, but from channels exists this gegenstrom crosscurrent heat exchanger. The exchange surface is 3 times larger than in usual heat exchangers.
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| Summer bypass flap
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In the lower part of the device the bypass flap. Some other vendors deliver this only as special accessory. But 2 to 3% of the air could go the wrong way.
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| Air exchange with ventilator from outside
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The ventilators are only in the air streams seperated by the heat exchanger from the living space. The heat exchanger beomes in this way also a silencer.
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| Airing system of single-family dwellings
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On the top left in the picture is the flap of the summer bypass. Thus the chill current of air from an underground buried pipe is not warmed up by the exhaust air.
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