ᐅ Distance between exhaust air outlet and fresh air intake only 2 meters
Created on: 26 Jul 2021 16:15
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chrisreal89
Question for the professionals:
-New build KfW55 standard
-Central ventilation system
The specialist company has only maintained a 2-meter (6.6 feet) distance between the exhaust air and the fresh air intakes, arranged vertically in a line (see pictures). Fresh air on top, exhaust air below.
This setup is on the west side. Now, I and several other contractors are concerned that there might be air short-circuiting occurring. The specialist company has no concerns at all and sees no alternative option (due to dew points, etc.).
Unfortunately, this issue was not properly considered during the shell construction planning by the plumbing company.
Maybe someone has an alternative solution or idea? Or perhaps no concern at all because they have installed a similar system like this multiple times?
The idea of underground routing was rejected due to condensation risks (according to the specialist company). The idea to locate it on the other side of the exterior door was also dismissed (which would also only be about 2 meters (6.6 feet) apart).
Our equipment room is very limited in space, and the west side is the only exterior wall. Do you need any further information?
Looking forward to your opinion, advice, or solution!
-New build KfW55 standard
-Central ventilation system
The specialist company has only maintained a 2-meter (6.6 feet) distance between the exhaust air and the fresh air intakes, arranged vertically in a line (see pictures). Fresh air on top, exhaust air below.
This setup is on the west side. Now, I and several other contractors are concerned that there might be air short-circuiting occurring. The specialist company has no concerns at all and sees no alternative option (due to dew points, etc.).
Unfortunately, this issue was not properly considered during the shell construction planning by the plumbing company.
Maybe someone has an alternative solution or idea? Or perhaps no concern at all because they have installed a similar system like this multiple times?
The idea of underground routing was rejected due to condensation risks (according to the specialist company). The idea to locate it on the other side of the exterior door was also dismissed (which would also only be about 2 meters (6.6 feet) apart).
Our equipment room is very limited in space, and the west side is the only exterior wall. Do you need any further information?
Looking forward to your opinion, advice, or solution!
Mycraft schrieb:
Follow the manufacturer's specifications.You can demand a lot. The small utility room simply doesn't allow for any other solution.
Just direct the airflow and that will be fine.
But another question: It says west side – is that also the terrace? I would be more concerned about noise in that case. Especially the exhaust air cannot be described as whisper-quiet.
One alternative (for both issues) would be to at least direct the exhaust air underground away from the building. However, that will cost four figures.
One alternative (for both issues) would be to at least direct the exhaust air underground away from the building. However, that will cost four figures.
chrisreal89 schrieb:
Hi, it’s a Viessmann Vitovent 300-W, and the following is noted there: We also have a Viessmann device. The manufacturer clearly illustrates in a diagram how far the outdoor air intake and exhaust outlets should be separated:
Our planner took this very seriously. The exhaust air is located in a light well in the technical room in the basement on the north side of the building. We draw outdoor air through an intake in the upper floor on the east side of the building.
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chrisreal895 Aug 2021 11:22Thanks for your answers. I also have concerns about the "wind-sheltered corner"! Is the noise level of an exhaust really that bad? Alternatively, I have considered directing the exhaust air towards the garage and making a core drill hole in the garage ceiling, then venting it out through the roof... Do you think that could work?
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