Cooling bypass position (up to firmware version 1.2.7)

Ventilation units equipped with a bypass can also be used to cool living areas when the summer season is set → Cooling in summer operation (up to firmware version 1.2.7).

Under Ventilation/ventilation settings the open or closed bypass position is displayed.

Bypass open: Operation without heat recovery for cooling. The outside air is routed past the heat exchanger directly into the living areas (use at cool outside air temperatures).

Bypass closed: Operation with heat recovery for heating. The bypass shutter is fully closed. The outside air is fed through the heat exchanger into the living areas.

A cooling effect can also be achieved if the air is precooled via an earth heat exchanger when outside air temperatures are high.