ᐅ Which pressure switch should be used to shut off the mechanical ventilation system with heat recovery?

Hello, we were recommended the Leda LUC 2 by three different chimney specialists.

sirhc schrieb:


For our new build with controlled residential ventilation, the issue is only the stove’s output relative to the cross-section of the flue pipe in the chimney. The stove installer must certify the correct setup of the stove, and the ventilation installer must confirm that the system extracts as much air as it supplies; then there is no need for a pressure monitor, a room-air-independent stove, or a DIBt approval.

What the local chimney inspector wants, no one will ever sign off on, and the chimney inspector is a real pain who keeps you hanging on false hope. My opinion on this is well known here. However, during construction, it makes sense to talk to the local chimney inspector and do exactly as he requests. Or simply install a pressure monitor, because that is the only method the inspector never objects to (it is theoretically the best solution).
The mentioned signatures won’t be issued on a permanent basis. The ventilation installer will definitely not sign off on this story. As always, nobody wants to take responsibility for anything. Of course, you could also switch off the ventilation system during the stove inspection ^^. In the end, it’s a lot of fuss over nothing. If the weather is unfavorable, even a pressure monitor won’t help at all. The whole issue basically exists to shut down the ventilation system when all fresh air inlets in the house are simultaneously closed, preventing new air from entering while air is still being extracted. This then creates a significant negative pressure.