ᐅ Flue Control / Pressure Switch for Shutoff of Mechanical Ventilation with Heat Recovery
Created on: 25 Mar 2019 20:57
M
MottenhausenM
Mottenhausen25 Mar 2019 20:57Hello everyone!
For the approval of the wood stove when a controlled residential ventilation system is present, a suitable regulation or shutdown of the ventilation system is necessary to prevent smoke gases from being drawn into the living space. Can anyone advise me on exactly what is required? Any recommendations? Certifications?
Situation:
- Controlled residential ventilation system by Viessmann
- Wood stove (not open combustion) with its own (room-air independent) fresh air supply from a duct in the chimney
During the electrical planning, the electrician was unsure about the requirements and recommended a stove control system from Brunner including installation for €1250. However, I believe there is a misunderstanding. My concern is not to electronically control the wood stove (automatic damper) but simply to implement a shutdown of the controlled residential ventilation (switched outlet), that is, temperature- or pressure-controlled during the operation of the stove while the stove door is briefly opened for refueling and potential negative pressure occurs.
A preliminary meeting with the responsible chimney sweep will take place soon, but I would like to be informed beforehand. The electrician honestly admitted that he is not very familiar with this and would install something else that the chimney sweep might accept. Even if he cannot get it from wholesale, we are welcome to order it, for example, online.
For the approval of the wood stove when a controlled residential ventilation system is present, a suitable regulation or shutdown of the ventilation system is necessary to prevent smoke gases from being drawn into the living space. Can anyone advise me on exactly what is required? Any recommendations? Certifications?
Situation:
- Controlled residential ventilation system by Viessmann
- Wood stove (not open combustion) with its own (room-air independent) fresh air supply from a duct in the chimney
During the electrical planning, the electrician was unsure about the requirements and recommended a stove control system from Brunner including installation for €1250. However, I believe there is a misunderstanding. My concern is not to electronically control the wood stove (automatic damper) but simply to implement a shutdown of the controlled residential ventilation (switched outlet), that is, temperature- or pressure-controlled during the operation of the stove while the stove door is briefly opened for refueling and potential negative pressure occurs.
A preliminary meeting with the responsible chimney sweep will take place soon, but I would like to be informed beforehand. The electrician honestly admitted that he is not very familiar with this and would install something else that the chimney sweep might accept. Even if he cannot get it from wholesale, we are welcome to order it, for example, online.
Hello,
it’s quite possible that you don’t need anything at all. We have a room-air-independent wood stove with a DIBt certificate, and that’s sufficient. The mechanical ventilation with heat recovery (MVHR) is actually not the main issue; a lot more important is the exhaust hood in the kitchen. If you want to install one, you can’t avoid pressure sensors and related equipment.
Just the MVHR system itself is usually not a problem—as long as it’s smart enough to switch off the exhaust fan when the supply air fan fails.
Best regards,
Andreas
it’s quite possible that you don’t need anything at all. We have a room-air-independent wood stove with a DIBt certificate, and that’s sufficient. The mechanical ventilation with heat recovery (MVHR) is actually not the main issue; a lot more important is the exhaust hood in the kitchen. If you want to install one, you can’t avoid pressure sensors and related equipment.
Just the MVHR system itself is usually not a problem—as long as it’s smart enough to switch off the exhaust fan when the supply air fan fails.
Best regards,
Andreas
Hello Mottenhausen, andiman is right: if you have a suitable fireplace stove, you might not need anything further. When I asked the fireplace installer and the chimney sweep back then, they explained that 100% room-air-independent panoramic fireplaces (3-sided glass) don’t really exist, which is why we had to have a safety shutoff device. If you choose an appropriate fireplace stove, that wouldn’t have been necessary. The fireplace (stove) supplier can only make recommendations; ultimately, the chimney sweep is the one who decides. So first choose a specific model, provide the technical documentation to the chimney professional, and then you’ll be on the safe side.
M
Mottenhausen26 Mar 2019 15:19Thank you all for the input. At least now I know what I need and where to focus my research.
For ventilation, we only have a recirculating downdraft extractor included in the kitchen design, specifically because of this issue. The chimney sweep has been quite reserved so far and wants to make a decision about what is possible and how only after an on-site inspection of the shell construction, once the chimney has been installed.
For ventilation, we only have a recirculating downdraft extractor included in the kitchen design, specifically because of this issue. The chimney sweep has been quite reserved so far and wants to make a decision about what is possible and how only after an on-site inspection of the shell construction, once the chimney has been installed.
Similar topics