| 摘要 |
<p>The fireplace provides hot water for a central heating system or for hot water distribution and the hot gases from the hearth pass below the hearth, between two or more boxes containing the water to be heated, in channels. The bottom reservoir extends vertically behind the hearth and has a part partially above the hearth, these extensions also being heated by the gases. Further up there are boxes in chicane joined by tubes also heated by the gases and the hot water circulation starts at the top and exits from the lowest box.</p> |
