| 摘要 |
<p>The invention relates to a gas boiler, meant for producing hot water for sanitary use and for heating, comprising a gas burner (1) having a flame acting on a primary circuit (6) by means of primary exchanger flame-water and a secondary circuit (2) by means of a secondary exchanger water- water. The primary exchange circuit (6) is an open circuit, wherein the cold water is supplied and wherefrom the hot water is discharged for the sanitary use, and the secondary exchange circuit (2) heats the water used for heating by means of a thermal siphon (4). The above mentioned secondary and primary exchange circuits are controlled by means of a single thermostat (T1) which controls the burner flame, according to the water temperature from the primary circuit.</p> |
