Hello everyone,
I want to install decentralized ventilation units from Südwind in our house (model Ambientika smart). According to the technical datasheet, they have an internal duct with a diameter of 162mm (6.4 inches).
Now I’m wondering: What diameter should the core drill hole be? Does the hole need to be larger so that the duct and the wall mounting sleeve fit well and can still be sealed properly? What exact diameter should I use? Thanks, Lars
I want to install decentralized ventilation units from Südwind in our house (model Ambientika smart). According to the technical datasheet, they have an internal duct with a diameter of 162mm (6.4 inches).
Now I’m wondering: What diameter should the core drill hole be? Does the hole need to be larger so that the duct and the wall mounting sleeve fit well and can still be sealed properly? What exact diameter should I use? Thanks, Lars
Thanks to all of you for the helpful answers!
From a construction perspective, I probably wouldn’t have thought about it that much. However, the issue of sound decoupling is an important point. I don’t want those things to be so noticeable. @Lüftermax explained it in more detail, giving me some background information as well. I thought that was useful.
From a construction perspective, I probably wouldn’t have thought about it that much. However, the issue of sound decoupling is an important point. I don’t want those things to be so noticeable. @Lüftermax explained it in more detail, giving me some background information as well. I thought that was useful.
LarsBr80 schrieb:
I probably wouldn’t have thought that much about the technical construction aspects. Isn’t the installation manual the most important thing? That’s the first thing you look at.
So...
1. I strongly reject the accusation of being a bot. I just put a bit of effort into my writing.
2. The instructions specify a drilling diameter of 160/162 millimeters (6.3/6.4 inches). However, this is really tight because, first, it does not allow for compensating any inaccuracies in the drilling (such as slopes, etc.), and second, it doesn’t provide any opportunity for additional sound decoupling, since otherwise the pipe would be directly connected to the masonry. Alternatively, one could create an airtight buffer zone with preferably well insulation foam, which significantly reduces noise.
1. I strongly reject the accusation of being a bot. I just put a bit of effort into my writing.
2. The instructions specify a drilling diameter of 160/162 millimeters (6.3/6.4 inches). However, this is really tight because, first, it does not allow for compensating any inaccuracies in the drilling (such as slopes, etc.), and second, it doesn’t provide any opportunity for additional sound decoupling, since otherwise the pipe would be directly connected to the masonry. Alternatively, one could create an airtight buffer zone with preferably well insulation foam, which significantly reduces noise.
@Lüftermax … the manual does not mention 160/162 mm (6.3/6.4 inches). @nordanney copied the relevant excerpt from the installation guide, which can be found on the Luftbude website, in post 2, including the exact drill hole diameter as requested. In general, I recommend reading this installation guide in full.
N
nordanney17 May 2025 13:42Lüftermax schrieb:
2. The manual states 160/162mm (6.3/6.4 inches) The manual is attached above as a screenshot. It says 180mm (7.1 inches). It is easy to read.