Lunos e^2 and Ego installation with KNX

If the styrofoam blocks are not positioned correctly...

They are normally installed simultaneously with the Ytong (instead of the Ytong) and then the plaster goes on top....so honestly, I'm less worried about that...the question is only what is better...the styrofoam block or a core drilling?

The question is rather what is more advantageous for you? It doesn't really make a difference if both are installed completely sealed.

Hi, we also have Lunos e2 and KNX. Since we don’t need insulation on the exterior wall (the bricks are filled in our case), we chose the version with the drilling. But if I were to build with insulation, I would choose the version in the window reveal - it’s less noticeable - although the drill holes aren’t that big either. Apparently, these are the smallest decentralized fans.