Experiences with decentralized controlled residential ventilation?

I believe that my Inventer system is pretty messed up. Both planning and installation errors. Nothing has been foamed in at all! I don't care now, it's just a rental and the new building will be up in a year. By the way, the landlord who built the two single-family houses right next to each other did without the Inventer in his own.

Hello SirSydom,

I think my Inventer system is pretty messed up. Planning as well as installation errors. There is no foam insulation at all in my case!

If the pipes are not foam insulated, that is a clear installation error. Inventer even specifies this in their installation manual.

Otherwise, I also accept systems on behalf of Inventer and my regional sales representative, even if I have not built them myself.
In cases of such errors, I strictly refuse acceptance and the accompanying warranty is also lost.

Hello SirSydom,

in the meantime, I have installed quite a few ventilation systems, many of them from Inventer, in apartments or houses. So far, no one has complained to me about the noise.
Especially in the bedrooms (bedroom, children's room, guest room), I make sure to make the fans switchable there. For example, there is the option at the controller itself (ZR8 controller) to reposition a tab that, at the zero setting, switches off the system for a maximum of one hour.
Then, for systems with a central control, a timer relay can be installed per bedroom. Using a button in the respective room, the fan can then be switched off separately for time x. Or meanwhile, there is also a small module that fits into a flush-mounted box under the button and also allows the fans to be switched off for 2, 4, or 8 hours.
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Hello,

That would interest me. In about 4-6 weeks, I am having a decentralized ventilation system from Ma...o (4 units for 160 sqm) installed in my new build. Controlled residential ventilation was excluded due to cost. The idea was to integrate a timer relay(?) into the control so that I have the option not to run the system continuously but with breaks, e.g. ventilate for 30 minutes, pause for 30 hours. The control is relatively simple, only 2 buttons. I have little knowledge of electrical engineering myself. Can I get a tip?

Best regards

Hello,

That would interest me. In about 4-6 weeks, I will have a decentralized ventilation system from Ma...o (4 units for 160 sqm) installed in my new building. Controlled residential ventilation was ruled out because of the cost factor. The idea was to integrate a time relay(?) into the control system so that I have a possibility not to run the system continuously, but with breaks, e.g. ventilate for 30 minutes, then pause for 30 hours. The control system is relatively simple, only 2 buttons. I have little knowledge of electricity myself. Can I get a tip?

Hello Nupogodi,
in principle, this is a simple matter. The line going to the fans is routed through a time relay. A button in the bedroom itself actually activates the relay when pressed and interrupts this one fan for time x.

I recommend not turning off all the fans with one relay, but only the bedrooms (bedroom, children’s room, guest room). However, if possible, each of these separately.
A ventilation system only makes sense if you operate it continuously. So not just run it for 30 minutes and then take a 30-hour break (I assume that was just a joke). If you actually wanted to ventilate like that, you would have to make sure to close the openings during the time you are not ventilating, because otherwise you will feel unpleasant cold air coming in, especially in winter.
Did someone plan the system for you, or did you only decide for yourself how many fans you wanted? Four fans for 160 sqm is already borderline and you will (I roughly calculated) just about achieve the required ventilation for moisture protection with the fans from this manufacturer. The room geometry must also be taken into account, since there are often, e.g., unventilated dressing rooms directly next to bathrooms. There is little or no air exchange there and you can expect the consequences.
Four fans in a bungalow-style house have to be considered differently than the same number of fans in a house with several floors.
A ventilation system, if it is professionally planned, is always designed for nominal ventilation as required by DIN 1946-6.
Have a nice Sunday
M. O.

Hello Nupogodi,
in principle, this is a simple matter. The line that goes to the fans is routed through a time relay. A push button in the bedroom itself practically activates the relay when pressed and interrupts this one fan for time x.

I recommend that you do not switch off all fans with one relay, but only switch off the bedrooms (bedroom, children's room, guest room). These should each be switched off separately if possible.
A ventilation system only makes sense if you operate it continuously. So, not just run it for 30 minutes and then take a 30-hour break (I guess that was just a joke). If you actually wanted to ventilate like that, you would have to make sure to close the openings during the times when no ventilation takes place, because otherwise you will notice unpleasant cold air flowing in, especially in winter.
Has someone planned the system for you or did you just determine how many fans you want? Four fans for 160 sqm is already borderline, and you roughly achieve (I did a quick calculation) with the fans from this manufacturer just about the ventilation required for moisture protection. The room geometry must also be taken into account, because often there are, for example, unventilated dressing rooms next to bathrooms. There is little or no air exchange there, and you can wait for the consequences.
Four fans in a bungalow-style house are to be considered differently than the same number of fans in a multi-story house.
A ventilation system, if professionally planned, is always designed for nominal ventilation, as required by DIN 1946-6.
Have a nice Sunday
M. O.

The idea of running the system with breaks does not come from the fear that the system is too loud when falling asleep, but rather that I hardly believe that the heat recovery will work in continuous operation at -10 to -15 degrees in winter, namely the ceramic filter will cool down too much. Of course, I don't necessarily have to take any action now and first wait and see. In an emergency, you can always turn the system off if you notice that the interior wall next to the air inlet becomes too cool as a result and moist. Therefore, I think the whole system must be switched off with a time relay.

Why only 4 units? On the ground floor 2 in parallel operation - living room and bedroom, on the upper floor 2 also parallel in both children's rooms. On the upper floor I still have a gallery in between, which is conventionally ventilated by the ventilation of the two children's rooms. In both bathrooms and the utility room (?) I have regular fans with humidity control, also from Maico, in the kitchen (not an open kitchen) an air outlet with electrically operated flap (Bielmeier, DM 100mm). This was recommended to me by the Maico sales department to meet the minimum requirements. The whole thing cost me exactly 3,000 without installation, I did not want to invest more. The house (1.5 stories) is well insulated and insulated (Poroton 24cm, 12 cm insulation, 10cm clinker brick), triple glazed. Why Maico - I hardly found any difference to the other similar devices. An advantage of these devices as I see it is an electric flap (it closes when off) and that the fan is mounted on the outside of the ceramic filter, because of noise, the price was also okay.

Can I have a switch installed for the decentralized ventilation?