Automation of a controlled residential ventilation system (ventilation system)

Because a controlled residential ventilation system should bring the old, used air outside and not distribute it inside the house.

Of course, I am talking about the heat recovery!

That means the warmer the exhaust air is (for example through a chimney), the more the supply air can be heated. Theoretically it works... but in practice it brings almost nothing. Our supply air in winter is also about 2..3 degrees colder than the room air. Regardless of whether the living room is heated with a fireplace or not.

Now in this heat, we use air conditioning to cool. Throughout the house, it is comfortably 22 degrees. Thanks to quiet Daikin indoor units. The Daikin also runs super quietly.

Regards, Steffen

Now with the heat, we use air conditioning to cool. Throughout the house to a pleasant 22 degrees. Thanks to quiet Daikin indoor units. The Daikin also runs super quietly.

Did you have the air conditioning installed directly or did you first build the preparation and retrofit it later? I am particularly interested in what exactly needs to be prepared during the shell construction to be able to retrofit later without problems if it turns out that the other measures (shading, passive cooling, etc.) are not sufficient.

How did you handle the capacity of the various indoor units in the differently sized rooms? All on one outdoor unit?

In other words, the warmer the exhaust air is (due to e.g. a fireplace), the more the supply air can be heated. Theoretically it works... but practically it hardly brings anything.

It probably helps a bit, but not much. To really distribute the heat, besides a fairly open architecture, probably above all a water tank connected to the heating system helps. Although almost everyone agrees that this is not economical.

Air conditioning is a topic you could write a doctoral thesis about.

Creating a proper climate concept and, if necessary, preparing the pipes, you can have them installed right away as well.

My air conditioning has been running continuously in parallel with the [Kontrollierte-Wohnraumlüftung] since early yesterday morning. Summer is already here.

But to get back to your questions... you need power, wastewater, and cooling pipes from the outdoor unit to each indoor unit.

The problem is that there are different diameters for the cooling pipes.

In other words, if you choose diameter A, you also have to use system A; if you choose B, you must install system B. Or you work afterward with reducers, etc., but that is more like tinkering.

So actually, when preparing, you only save the system itself. The rest has to be planned and installed beforehand. Then you might as well take the last step.

Our system has a summer setting. When it is warm, it does not bring any supply air into the house and opens again as soon as the outside temperature in the evening falls below the inside temperature. With the summer setting, there is no heat recovery.

This afternoon we had a nice 22 degrees inside the house. It was warmer on the weekend, then the terrace door was open at noon.

Let's see how it will continue in summer. The systems are not air conditioners, they can only delay

Hello, is this a bypass control? Which controlled residential ventilation system do you have?

Hello, is this a bypass regulation? Which controlled residential ventilation do you have?

Central ventilation unit with heat recovery
With Stiebel LWZ 604 air at Tecalor TCO 2.5
Similar to the bypass but with temperature control. Automatically regulates the ventilation levels.

We had one installed immediately. Just preparing it is by no means sensible..Costs for us about 10,000 EUR