| 摘要 |
Production of hot air. The air heater comprises: . a modulating burner 12 associated with means for controlling its operation, . and a heat exchanger comprising: - a main exchanger 14 forcing the combustion gas to be conveyed in a direction counter to that of a stream of air to be heated, - and an auxiliary condensation exchanger 20 arranged between the outlet of the main exchanger and the stream of air to be heated. Application to apparatuses for heating rooms (premises). <IMAGE>
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