Fireplace with direct exhaust discharge through exhaust pipe

Hi,

Whether a chimney sweep in Germany would accept that, no idea. But I imagine it’s pretty tricky if you still have to go through an upper floor.

No matter what you do: try to get the chimney sweep on board beforehand, they like that.

About 15 years ago, we had to lead our condensing boiler outside with a concentric flue pipe. At that time, it was not allowed for this pipe to run through living rooms, but it could go through side spaces, and we were allowed to install 2 bends. According to Google, it seems that running through living rooms is now permitted, but without the master chimney sweep, you won’t get far. And whether that also works in modern houses is another question. Without precise advice, it can become a tricky dance.
One of our neighbors retrofitted a wood stove with a flue pipe, as there was no chimney. It goes straight through the exterior wall, then 1x 90 degrees upwards and past the roof overhang upwards. The height is another matter; if I recall correctly, our chimney had to end 1 meter above the ridge back then, which was changed back and forth.

Kermit

Thank you for the helpful tips. In our bungalow, the pipe would not pass through any additional living spaces. Through the Google keyword and an image found there, I discovered an interesting document.
Information sheet No. 47 Assessment aid for the inspection of combustion systems - Chimneys mounted on fireplaces without a base

It also states: "A base is not required for
a) Flue systems for fireplaces used only temporarily with a nominal heat output of not more
than 10 kW in detached, single-story buildings intended only for temporary occupancy, such as weekend houses, shelter huts, construction site cabins and accommodations on construction sites..."

The information sheet also highlights many other problems. Either the stove must bear the static load of the chimney or the ceiling must. Preventing rainwater ingress is more important, as otherwise the liquid will go directly into the stove. If the stove is ever replaced, it must be checked whether the pipe can still be used.

Apart from all the hurdles to be overcome, the solution does not seem possible for permanently occupied buildings/rooms.

We are planning a freestanding stove whose pipe goes vertically upward into the ceiling and from there through the upper floor and attic into a chimney. The chimney sweep did not see any insurmountable obstacles during an initial inspection. He will build the lightweight chimney (Promat or similar), which will stand on the upper floor floor, himself, hopefully making the final approval easier.