| 摘要 |
Sectional boiler (1) with front and rear cast-iron elements (2), the front element being equipped with a door (5). The door has to this end a central opening (8) and holes (9) which surround it and are cast integrally therewith. On its face facing the combustion chamber, the door is provided with ribs which serve to block a nut which ensures the fixing of the burner. <IMAGE>
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