| 摘要 |
<p>A boiler, in particular of the so-called combined type, comprises a first gas-water heat exchanger (4) for producing hot water for space heating in heat exchange relationship, by means of a primary piping system (5), with a second water-water heat exchanger (7) for producing hot sanitary water, as well as a storage and expansion unit (8) for the hot primary water in fluid communication with the second water-water heat exchanger (7). Advantageously, the boiler allows a prompt delivery of hot sanitary water although having limited weight and size. <MATH></p> |
