ᐅ Wood-burning stove or similar, with or without DIBt certification

Now it sounds completely different 😉.

By the way, I don’t have a hole in the facade – I placed the air ducts under the roof tiles. And nothing is done in the distribution box either; the unit is part of the mechanical ventilation system, and the power plug is connected there – the power is simply cut off if a dangerous negative pressure occurs.

An absolutely simple principle, and it’s not the cheapest option, but simply the most sensible one.

It would have been much smarter to place it under the roof. What I didn’t know back then. No one could tell me within the few days where and how to do it. So: Had to make a decent guess. Roll the dice… It wouldn’t have been a problem (30 minutes more), just laying the cable to the roof.

Anyway: As I guessed at the time, it was absolutely fine (quote from heating engineer, literally).

If you disconnect my controlled residential ventilation system from the power supply, it often (not always, it’s just a computer inside) starts its calibration procedure shortly afterward. And then it makes loud noises (in contrast to usual operation). Right in the middle of the night… Hmm.

The option to do it the way you suggested, with a socket, would have been possible as well (surely it saves money!).

PS: Quite a few people guess like I did. You’ve found a good solution. Maybe you should post it separately here as a tip (or have it pinned).

Regards
Thorsten

Huh? A hole in the facade? Fireplace function?

What kind of amateurs have you been dealing with? The pressure switch does not have any contact to the outside; it measures the differential pressure between the living room and the fireplace—no drilling or anything like that is necessary. Most chimney sweeps couldn’t care less about the fireplace function—it has to be operated manually, so it doesn’t provide real safety. You also have to keep it turned on all the time when the fireplace is in use—which would annoy me a lot, and I wouldn’t press the button (by the way, we have the same setup with our mechanical ventilation with heat recovery).

Otherwise, it’s the same as with Sebastian: the power is cut off via an outlet, or the cable is simply connected to the mechanical ventilation system—that’s also how our ventilation installer does it.

This also shows that comparing only the €€€ often doesn’t make sense; usually, higher prices come with more or different services for various reasons.

Saruss schrieb:
This also shows that just comparing the $$$ often doesn’t make sense; usually, a higher price means there is more or different quality of work involved for various reasons.

Or you see contractors who don’t really understand the subject (and aren’t willing to learn) trying to push solutions with prices on customers that make you feel overwhelmed 😡 😡 😡

Yes, but it is more helpful to compare quotes for the same service/solution rather than fundamentally different ones. Therefore, you need to provide much more information than just the price.