Please evaluate my controlled residential ventilation planning

Hello everyone,

can you evaluate my controlled residential ventilation planning ...

Goals:
1. Good air quality in all rooms
2. Absolutely quiet system that is hardly audible in the rooms

Questions:
1. Are the volume flows sufficient?
2. Is the system barely audible?
3. ...

Thanks in advance!!

Attached are the planning documents.

We have the RecoVair 360/4 from Vaillant.

Addition:

Family: 2 adults, 2 children

Rooms Ground Floor:

[*]Living/Dining room with open kitchen = total 58 m² area, of which 44 m² living/dining room Supply air: 2x 30 m³ (in the ceiling), and 14 m² in open kitchen Exhaust air: 45 m³ (in the ceiling)
[*]Guest room = 11 m² area, Supply air: 1x 25 m³ (in the ceiling)
[*]Guest bathroom = 4.5 m² area, Exhaust air: 40 m³ (in the ceiling)
[*]Utility room = 8 m² area, Exhaust air: 30 m³ (in the ceiling)

Rooms Upper Floor:

[*]Child 1 = 17 m² area, supply air: 1x 25 m³ (in the floor)
[*]Child 2 = 18 m² area, supply air: 1x 25 m³ (in the floor)
[*]Master bedroom = 14 m² area, Supply air 1x 35 m³ (in the floor)
[*]Dressing room connected to master bedroom with door = 8 m² area, Exhaust air 30 m³ (in the wall below the ceiling)
[*]Office = 8 m², Supply air: 1x 20 m³ (in the wall below the ceiling)
[*]Main bathroom = 12 m², Exhaust air: 1x 45 m³ (in the wall below the ceiling)

Total = 190 m³/h

Just a few thoughts: The ducts to the rooms with the greatest air movement are the longest with the same diameter. So there has to be quite a bit of throttling in the other rooms, which means high pressure losses, resulting in more noise and higher power consumption. Either the rooms with high demand are very close to the distributor or the duct cross-sections are larger, meaning 2 ducts. I would not install any device without an enthalpy exchanger. The dB figures for the device are really frightening...

Tell me, who planned this? You yourself?
Which ventilation ducts are going to be used? In the extreme case (kitchen), you’re running 45m³/h through one hose.
We installed the Zehnder Comfotube 75. The pipes have an internal diameter of 63mm. So at 45m³/h, the flow velocity is 4m/s. That’s already way too much for me.
We connected almost every outlet with 2 hoses.

Vaillant has the same pipes, if I’m seeing it correctly, although they specify the internal diameter as 62mm.
So either you go for the bigger pipe (92mm outside / 75mm inside) and most likely run into problems fitting the pipe between the reinforcements of the concrete ceiling, or you use 2 pipes per outlet.
But 5 pipes (exhaust air) at 190m³/h would definitely be too few for me. Noise is preprogrammed there.

Alternatively, there is also the flat duct, which is not cast into the raw ceiling but laid on the raw floor into the insulation layer afterwards. Although the basic problem probably won’t change.
Vaillant only specifies this with outer dimensions of 52x132mm. Subtracting the 13mm difference between outer and inner from the small round pipe, the internal dimensions remain 39x119mm.
The free cross-section of the flat duct is then similar to the small round pipe.

I stick to it:
There are too few connection ducts for the air volume.

Thanks already for the first feedback.

This was planned by Fa. PEDOTHERM.

Flat ducts will be installed on the raw ceiling.

Unfortunately, I do not know exactly which duct will be installed. I will ask though.

Does anyone know the company PEDOTHERM and can say something about them?

Are there any other comments regarding the planning I posted above?

I deliberately included the detailed planning as a document so that you have a comprehensive insight.

Are 45 m³ at an "extraction nozzle" really already too loud?

What about the 35 m³ supply air at the floor outlet in the bedroom?

This is a book with 7 seals for me.

Are there possibly even professionals here in the forum??

Many thanks
Christian