Two-circuit heating boiler with integrated condensing technology

摘要

Heating boiler (1) for condensing use comprising a combustion chamber (3) in which a fuel is reacted, wherein the combustion chamber (3) has an exhaust pipe (6) for discharging the reaction products; a first water chamber (5) having a first inlet (9) and a first outlet (10); a second water chamber (8) having a second inlet (11) and a second outlet (12); wherein the combustion chamber (3) and the first water chamber (5) have a common primary heat transfer surface (4) for transferring heat generated in the combustion chamber (3) to water in the first water chamber (5), the exhaust conduit (6) and the second water chamber (8) has a common secondary heat transfer surface (7) for transferring heat from the reaction products in the exhaust pipe (6) to the water in the second water chamber (8), the first drain (10) being equipped with a thermostatic valve (8). 13), the first drain (10) and the second drain (12) are separated by the thermostatic valve (13), and the first inlet (9) is provided with an injector (14) which controls the flow of water into the first water chamber (5) with opened thermostatic valve (13) permits.