Device for warranty of safe operation in installation area provided fireplace, has ventilation unit, which enables air flow, guided by area present outside installation area, in the opened position

摘要

The device has a ventilation unit (1) is transferable into an opened or a closed position. The ventilation unit enables air flow, guided by the area present outside the installation area (2), in the opened position and does not allow any air exchange between the installation area and the area present outside the installation area. The ventilation unit is transferable from the closed into the opened position, if a pressure level dominant in the positioning area falls, around a preset differential pressure, under a pressure level dominant within the area present outside of the positioning area.