| 摘要 |
<p>The extractor recovers heat from the fumes of a heater and feeds the furnace (F) with air for combustion. An air circuit (A) is formed, independent of the position of the heating equipment. The air passes via a heat exchanger (8) and, in so doing, permits fumes to be exhausted at a temperature equal to or near that of exterior air. A cooler (D) may also be fitted, connected by a pipe (C) to the heat exchanger and then back to the furnace.</p> |
