Air inlet for central heating boiler - has electrical sealing device avoiding static air draught, with tube for fresh air from outside leading to burner

摘要

The electrical sealing device avoids static draught of air concentrated in rooms, so as to localise it before reaching a boiler burner, also removing fumes and smells in the room to be ventilated. It comprises a tube or box (1) receiving the fresh air from outside under the control of a shutter, and transmitting it directly to the burner. Electromagnets can be mounted on the outside of the tube and controlled by the boiler thermostat, so as to open and close the shutter.