Summer bypass flap
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.  

Summer bypass flap

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.

So it's possible to lock the summer bypass in winter with a shover completely.
Technic for buildings and living Technic for buildings and living
Modern domestic technic from air to air heat exchange to central vacuum cleaners. Directory over all our reports about house technic.


Airing systems with heat recovery
Airing systems with heat recovery. Directory over all our reports about air to air heat exchangers.



Context description:  air to heat exchanger exchangers controlled living space room ventilation HRV summer warm bypass
German Austira Austrian Salzburg construction building domestic energy fair fairs event events date time month 2 Feb February winter
high resolution Photo Photos pic pics picture pictures JPG JPEG