Hello everyone,
I recently joined this forum because we are currently quite frustrated with the topic of ventilation.
Our construction project starts at the end of April.
It is a solid brick/Poroton house, a single-family home with 200 m² (2,150 sq ft) of living space on two levels. KfW 55 energy standard.
I can’t really explain it, but I can’t decide on a central ventilation system because of the long duct lengths inside the house. I know that all pipes are clean and protected by filters, but my gut feeling just doesn’t agree.
With decentralized systems, we are bothered by the fans on the exterior walls in every room.
Now we are looking for an alternative.
We also didn’t find window frame ventilators very appealing.
So my question is:
Has anyone else experienced this or does anyone know of another system?
We learned about a system available through Baufritz houses with air transfer grills. However, it is only distributed through Baufritz.
It’s a central ventilation system that blows air directly into the house over a short distance and then distributes it further via transfer grills above the doors.
I look forward to your input and help.
The undecided homeowner
I recently joined this forum because we are currently quite frustrated with the topic of ventilation.
Our construction project starts at the end of April.
It is a solid brick/Poroton house, a single-family home with 200 m² (2,150 sq ft) of living space on two levels. KfW 55 energy standard.
I can’t really explain it, but I can’t decide on a central ventilation system because of the long duct lengths inside the house. I know that all pipes are clean and protected by filters, but my gut feeling just doesn’t agree.
With decentralized systems, we are bothered by the fans on the exterior walls in every room.
Now we are looking for an alternative.
We also didn’t find window frame ventilators very appealing.
So my question is:
Has anyone else experienced this or does anyone know of another system?
We learned about a system available through Baufritz houses with air transfer grills. However, it is only distributed through Baufritz.
It’s a central ventilation system that blows air directly into the house over a short distance and then distributes it further via transfer grills above the doors.
I look forward to your input and help.
The undecided homeowner
Tolentino schrieb:
Oh no, the general contractor apparently has no knowledge (of the BAFA funding requirements).
Discussing the usefulness of this joint arrangement with the contractor is not productive. The sole purpose is to create conditions for BAFA that lead to meeting the funding criteria. This could be a BUS system (but it would have to be designed in the models so that they can "communicate" with each other—via KNX or possibly even a Raspberry Pi with some generic actuators, or according to the report in another forum, a timer switch (which I find quite absurd). Air-to-water heat pump, the TTL 9.5 I from Tecalor
He still hasn’t told us which ventilation system he plans to use...
exto1791 schrieb:
What is the best way to proceed here? How do you connect the two devices together?With KNX, it would be relatively straightforward. It depends on which functions you want to cover. For example, in the simplest case, you could create a few scenarios that can then be triggered both manually and automatically.Mycraft schrieb:
With KNX, that would be relatively simple. It depends on which functions you want to cover. For example, in the simplest version, you could create a few scenarios that can be executed both manually and automatically.How do I imagine a "shared control" via KNX? What are the benefits of shared control? Wasn’t the heating engineer right when he said: one device ventilates, the other heats? How can they even communicate with each other? Maybe you could give me one or two scenarios.
exto1791 schrieb:
What is the benefit of combined control?Meeting the BAFA subsidy requirements. Possible scenarios with a plausible explanation:
The ventilation increases one level when the heat pump is running, so that the heat is distributed better and heat buildup is avoided.
Or the other way around:
The ventilation only turns on when the heat pump is not running, so that the heat is not immediately vented outside.
B
bauenmitschaf6 May 2021 13:23In my opinion, your heating engineer is indeed correct in this case: heating and ventilation are two independent processes that do not need to be connected. Unfortunately, BAFA takes a different view on this...
This line of thought probably comes from manual ventilation and radiator thermostats. In the past, people would turn off the radiators while ventilating by opening the windows. Naturally, there was no 90% heat recovery back then, but that seems to be secondary. I would like to know how such funding conditions are established...