ᐅ Planning a Mechanical Ventilation System with Heat Recovery: Component Placement and Duct Lengths

Created on: 18 Jun 2021 20:29
D
domino649
Hello everyone,
I am planning to have a single-family house built and intend to install a controlled residential ventilation system myself.
My plan is to have the ventilation duct with a diameter of 75 mm (3 inches) embedded in the concrete ceiling, and to install the remaining components later on my own.

It is necessary to specify the positions of the air vents and the inlets and outlets for outdoor air and exhaust air in the basement wall soon.
The ventilation system I have planned is shown in the attachments.

1. The ventilation duct from the inlet to the distributor can be up to 20 meters (65 feet) long. Are there any limitations on the length between the distributors and the ventilation unit?
Which type of duct is used here (160 mm (6 inches)) – foam or metal?
2. How is the basement wall penetration sealed? Is it sufficient to install an air shaft?
3. What would you change in the planning?

Air vents with a diameter of 125 mm (5 inches) in the ceiling.
The house includes a basement, two full floors, and a recessed top floor (flat roof) with a rooftop terrace.
The exterior walls are made of aerated concrete (Ytong) and are 36.5 cm (14 inches) thick.

Thank you very much.

Two-story floor plan: basement and ground floor with red, yellow, and blue routes.


Floor plan of a two-story house: upper floor and attic; red and yellow lines show routes.


Site plan: red rectangular building, entrance bottom right, terrace left, north arrow.
S
Strahleman
22 Jun 2021 06:57
domino649 schrieb:

These foam pipes with an inner diameter of 160 mm (6.3 inches) have an outer diameter of 190 mm (7.5 inches).

I would be cautious about using foam pipes or insulated pipes in a sleeve seal. The risk of damaging the pipe during the sealing process is too high for my liking. It’s better to switch to KG2000 or Awadukt pipes just before the wall inside the building. These can be passed through the wall without any issues.
S
schaaaf
21 Sep 2021 14:44
Mycraft schrieb:

I can't say that. I would always prefer floor valves over any other options.
I don’t like to bring up old topics, but I would like to hear the reasons why floor installation is preferred. Does that apply to both supply and exhaust air? One argument against floor installation would be the "suction" of dust and the stirring up of dust, as well as concerns regarding furniture.