Chimney - a must from floor height?

@ T21150 : Good idea... do these plastic pipes also supply fresh air to the chimney?

Hi Cumpa,

yes, it is a LAS (air-flue chimney). Therefore, the necessary combustion air is also supplied through these pipes.

The part in the utility room from the boiler to the ceiling is covered with metal in our case. The pipes run inside.

Best regards
Thorsten

So.... spoke with the chimney manufacturer - my plan is not possible :(