| 摘要 |
Its casing (1) comprises two adjacent compartments, leakproof in respect of each other, namely a first compartment situated at the rear, in communication with primary or combustive air inlet ports (1a), in which the entry (7a) of the burner (7) is arranged, and a second compartment containing most of the melting duct (4) and the remainder of the burner (7), in communication with ports for the removal (1b) of the combustion fumes.
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