| 摘要 |
The invention relates to a heating boiler which includes a water container (3), divided into two partial spaces (11,12) through which flue gas heating pipes (7) extend. To improve the efficiency of the boiler, the combustion air flowing into the burner (5) is conducted into a heat exchanger (20) which is located in the partial space (12) located further from the burner. <IMAGE>
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