ᐅ Ceiling outlets for controlled mechanical ventilation, is that correct?

Created on: 2 Jun 2019 13:22
T
tumaa
Hello everyone,

The concrete ceiling needs to be ordered, and I’m supposed to inform the site manager where the outlets for the mechanical ventilation with heat recovery should be.

Originally, 100mm (4 inches) spiral ducts were planned, but this makes the concrete ceiling more expensive, etc...... Now I’m planning to use flat ducts.

The attic will also be converted.

Right now, the plan is for 6 supply air and 6 exhaust air outlets.

Ground floor:
1 exhaust air in the utility room
2 exhaust air (guest WC and kitchen)
1 supply air (living area)

First floor:
1 exhaust air for the bathroom
4 supply air for the bedrooms

Attic:
2 exhaust air (storage room and bathroom)
1 supply air for the room

Does this make sense? Thanks!

Grundriss eines Wohnraums mit Badezimmer, Dusche, Abstellraum und Möbeln.


Grundriss Spitzboden mit seitlichen Stauräumen und zentraler Treppe


Grundriss Erdgeschoss: Küche, Wohnzimmer, Essbereich, Flur, Terrasse, Carport mit zwei Autos.


Grundriss Obergeschoss: Elternschlafzimmer, 3 Kinderzimmer, Bad/WC, Flur.


Schnitt durch ein zweigeschossiges Haus mit Dachstuhl, Treppenhaus, Möbeln und Maßangaben.


Grundriss EG-Decke: Küche, PC-Ecke, Essbereich, Wohnbereich, Gäste-WC; KWL mit Zuluft/Abluft.


Grundriss OG-Decke mit SZ, OG-Bad und drei Kinderzimmer; grüne Kreise markieren Objekte
T
tumaa
6 Jun 2019 21:15
Update:

Offer + Calculation + Items

ComfoAir Q350 ventilation unit with display; next to it product images of components.


Product catalog page with technical parts: pipe elbows, metal covers, wire baskets and price information.


Product catalog page with images of small electronic devices and cables, including descriptions.


Left page of a product catalog showing gray pipe parts, elbows, and fittings.


Catalog page with images of pipe parts, fittings, and insulation materials.


Product catalog page featuring ventilation components: air distributors, silencers, prices.


Product catalog page with blue and green hose rolls and connection accessories.


Catalog page with photos of round parts: covers, O-rings, seals, and washers.


Excerpt from an offer list with three product images, descriptions, and prices.


Small excerpt of a purchase receipt table showing items, quantities, prices, and total amount €4,348.01
T
tumaa
6 Jun 2019 21:16
Calculation

Technical table for determining air volume flows in ventilation systems, many rows/columns.


Tabular excerpt with building data: height, location, insulation, ventilation.


Table of total outdoor air volume flows and ventilation types in buildings.


Ventilation plan: supply air/ducts at the top, exhaust air at the bottom, rooms like kitchen, shower, bathroom.
T
tumaa
6 Jun 2019 21:18
Positions

Ground floor plan: kitchen, living/dining area, bathroom, hallway, cloakroom, utility room, terrace, car in front


Floor plan of a residential house: master bedroom, three children’s rooms, hallway, and bathroom/WC.


Apartment floor plan: living room with sofa and table, bathroom with shower, storage room.
T
tumaa
6 Jun 2019 21:23
What do you think, does everything fit?
Does the structural engineering actually need to be adjusted?

So the pipes will be routed through the masonry; initially, I was thinking of a recess.
B
boxandroof
6 Jun 2019 21:54
Quickly and I’m not a professional:
For nominal ventilation, the controlled mechanical ventilation should run at about 50% capacity. I would definitely choose a unit one size larger.

Two vents in the parents’ bedroom would be better to reduce noise and drafts with the high air volume.
B
boxandroof
6 Jun 2019 21:56
Is that a closed pantry or a counter in the kitchen? If it is closed, then install a vent there. Otherwise, maybe install one as well.

The hallway does not necessarily need exhaust ventilation, as the stairwell is ventilated along with it, and the air moves into the ground floor. The downside, if the floors are not balanced, is dust settling on the stairs. The last picture surely shows one supply and one exhaust air vent, right!?