Air intake in light well?

2016-08-08 14:29:53

Radon is still a keyword to consider. Likewise, flooding that can quickly penetrate there.

We only have the supply air (plus exhaust air from the central vacuum cleaner) for the chimney in such a ventilation shaft - which currently often fills up during rain because there is no gravel bed underneath yet. This is not a real problem, but the situation on the property also needs to be looked at.

2016-08-08 22:19:31

Are there guidelines that the construction company must follow?

The supply air opening should actually be 1 to 1.5 meters above ground level. However, I do not know where this is regulated.

2016-08-09 13:32:53

Radon is another keyword to consider. Also flooding, which can quickly penetrate there.

We only have the supply air for the fireplace (plus exhaust air for the central vacuum cleaner) in such a ventilation shaft - which currently always tends to fill up during rain because there is no gravel bed underneath yet. This is not a real problem, but the situation on the property also has to be looked at.

I also thought about the weather. How is it in winter during snowfall?

We are not really in a radon area, but to be safe I will ask again.

I think I have also heard about the 1 - 1.5 meters, but I haven’t found anything about it.

2016-08-09 21:09:36

In DIN 1946-6:2009-05 it states under section "9.2.6 Increased requirements for indoor air quality (hygiene)"

9.2.6.2 Outdoor air intake
The design and location of the outdoor air intake or its minimum height above ground or roof must ensure that the outdoor air drawn in is the least polluted in the area of the building. Short circuits with the exhaust air and other exhaust systems (chimneys, etc.) must be avoided. An intake directly above ground level (germs, dust contamination, snow) as well as in narrow pits and shafts is not permitted.

If I have understood correctly on your part, both principles are violated (ground level, short circuit). Regardless of whether "increased requirements" are required, I would not accept this arrangement of the supply air.

2016-08-10 07:55:28

Ok.. Thanks. And this DIN standard must be complied with?

According to the site manager, the service ends at the wall penetration, but he can offer me a light well like that.

Should I lead the supply air 2-3 meters away from the house and build a tower there at about 1m height?

How is it then with the condensate? A slight slope towards the house, and a drain with a siphon there?

2016-08-10 07:59:41

Ok.. Thanks. And this DIN standard must be followed?

Only if agreed.

In that case, I would do it as you described - also with a slight slope and siphon. It's best to make it longer, then you have a slight cooling/heating effect at the intake depending on the season.

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Air intake in light well?

Sebastian79

Bieber0815

daniels87

Bieber0815

daniels87

Sebastian79