Controlled residential ventilation / DIBT stove / pressure monitor

For exhaust air, a safety device must definitely be installed - air pressure monitor, window contact... With recirculation air, we have the ongoing discussion.

The chimney sweep sees it differently. Only if the controlled residential ventilation cannot create a negative pressure greater than 8Pa, a pressure monitor is not needed. This is the recommendation that has been sent to all chimney sweeps in this country. Recommendation - not mandatory! Unfortunately, the chimney sweep has the final say.

Chimney sweeps at best possess a paper-based supremacy. Physical laws of nature cannot simply be "overridden" by them either! v.g.

So the DIBT approval ensures that the controlled residential ventilation cannot draw anything from the chimney.
If you also open a stove with an LDW, exactly, nothing happens, because the LDW cannot even detect that the stove is open.
However, the LDW recognizes when a range hood is running and wasting large masses of air.
Which, by the way, in my opinion, is nonsense: first making a tightly sealed house with controlled residential ventilation
and then letting all the warm air out the "window" through the range hood + exhaust air.

Regards

So the DIBT approval ensures that the controlled residential ventilation cannot pull anything from the chimney.

Unfortunately, that is not entirely correct. The DIBT approval only states that the fireplace is sealed up to a certain negative pressure. If I remember correctly, that is 12 or 14 Pa. For example, if the supply air no longer works and the controlled residential ventilation continues to extract air, we have a problem – at least that is the chimney sweep’s argument.

If your stove's air supply is sealed, it won't ignite. If the air supply of our [Kontrollierte-Wohnraumlüftung] is sealed, an error message appears and the device shuts down.

So why buy an extra expensive [DLW] if all safety requirements are met? As I said, it's okay for exhaust hoods with exhaust air... but otherwise useless.

And ypg... You wouldn't buy car insurance for a Bentley if you only drive a Polo.

Milambar I have the same problem, oven with Dibt approval, but according to the chimney sweep I still need a DLW, he argues that the pipe connections can never be permanently sealed, nothing can be done about that.