Room boiler offgas and air layout has spent room air line connected to casing space round offgas vent pipe in vent shaft plus fire protection valve at spent air connection.

摘要

The jacket space (14) round the offgas vent pipe (6) in the flue shaft (1) connects to at least one spent room air line (19) and the line connection is equipped with a fire protection valve (21) triggered by rising temperature. Additional components include ceiling (2) and roof (3) chimney pot (4) plus porous concrete shaft blocks (5) and offgas vent line (6). An air intake (15) is provided at roof level and air intake (18) at the floor.