Snap-fit locking arrangement for gas effluent pipe in central heating boiler has burner chamber with hot gas inner draw-pipe with transverse cross-piece supporting L-shaped locking flange against end-stop

摘要

A gas-fired central heating water boiler has a burner chamber with a hot gas inner draw-pipe (7) with a transverse cross-piece supporting an L-shaped locking flange (8) against an end-stop (9). The pipe end (7) rests against a profiled flange (10) in line with the gas flow. The assembly forms a snap-fit unit.