Improved door assembly for premixed burner boiler

摘要: A door assembly for a premixed burner boiler comprises (1) having substantially flat and annular body (5) whose central bore (7) is connected to an admission duct (6) feeding mix of air gas, arranged in correspondence with said at least one usual electrode igniting the flame being associated first face (8) such (5), on same insulating element (3) present covering portion delimiting (7), fixed (8). There are elastically deformable elements (21) suitable coupled coupling themselves portions (36) so as hold it bound