ᐅ Installing External Air Supply for a Chimney

Created on: 17 Nov 2020 11:58
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ny_unity
Hello,

I have a Vaillant RecoVair ventilation system, a Bora cooktop with exhaust, and I want to install a fireplace in the living room. I have a fresh air supply connected through the floor slab, so external air intake.

My question is, is it possible to modify a standard fireplace to operate independently of the room air, using only the external air supply?

Thank you,

Erik
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Grundaus
17 Nov 2020 13:46
Since it apparently depends on the chimney inspector, I would like to share my requests from him.
I do not have a residential ventilation system, a wood stove with external air supply but without certification, an oil-fired tile stove, and a vented extractor hood. The only requirement was a double exhaust flap, where an additional flap opened when the extractor hood was in use. Whether it actually worked was never checked. For the new kitchen, this could have remained the same up to a certain extractor hood capacity. Therefore, ask the chimney inspector beforehand, preferably buy the wood stove from his supplier.
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nordanney
17 Nov 2020 13:53
ny_unity schrieb:

In living areas, air is supplied, and air is extracted from the kitchen and bathroom, so why would a mechanical ventilation system be a disadvantage? I don’t understand that. Or maybe my basic knowledge of physics isn’t enough :-D

The chimney expert’s argument: misuse of the ventilation system is possible, malfunction possible (supply air does not work), clogged filters (too little supply air), and so on.
We just discussed this this morning. The DiBT certification of the stove doesn’t matter to him (here where I live). He said I might as well use a cheaper, non-certified combustion chamber.
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ny_unity
17 Nov 2020 14:15
Wow, how different that is. I'll share the information on what came out of it.
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ny_unity
19 Nov 2020 12:16
Answer from the chimney specialist: Please only buy certified stoves from a store! Requirement: Compliance with BImSchV Stage I and II or the DIN plus standard!
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nordanney
19 Nov 2020 12:43
ny_unity schrieb:

Answer from the chimney sweep: Please only buy certified stoves in stores! Requirement: Compliance with BImSchV Stage I and II or DIN plus standard!

LOL. Are there decent stoves that don’t meet this requirement? Even the cheapest products from Poland or similar (Kratki, Prity, etc.) comply with this standard by 98%. DIBt certification? What does he say about that?
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hampshire
19 Nov 2020 12:53
It’s very simple: hire a local stove fitter who knows the chimney specialist, understands their requirements, and you’ll get a beautiful wood stove exactly as you want it without any hassle. Whether required or not, in a house with exhaust air systems, I wouldn’t want to do without a pressure monitor.