Patent ID: 6321997
Filing Date: 2001-11-27
Classification: F23L,F24B,F24F,Y02A,Y02E

Abstract:
In a heating system for heating an enclosure having at least one wall comprising a combustion device having a combustion chamber, an air inlet opening into the enclosure for drawing air from the enclosure into the combustion chamber and an exhaust gas outlet for expelling combustion gasses from the combustion chamber, the improvement comprising:a heat exchanger connected to said exhaust gas outlet:a passageway extending from a location outside the enclosure to the heat exchanger;a fan blowing air from outside the enclosure against the heat exchanger and into the enclosure; and,an exhaust device separate from said exhaust gas outlet in a lower portion of the at least one wall for releasing air from said enclosure when the air pressure inside the enclosure exceeds the air pressure outside said enclosure.