ᐅ Design and Planning of Controlled Residential Ventilation Systems – Experiences
Created on: 25 Apr 2023 10:54
B
baueninbw
Good morning dear forum,
I received today the planning documents from the prefab house manufacturer regarding the mechanical ventilation with heat recovery. Please see the attached images. The plan itself was created by an external company, not the house builder.
However, since several things have already gone wrong with the builder, I have some concerns with such a sensitive topic as the design of the mechanical ventilation system, and I would like to ask for your advice here to be sure that no shortcuts are being taken. As you can read here, even the smallest details can play a big role, for example when it comes to noise levels.
According to the legend, the plan is for a Zehnder mechanical ventilation system, which is already a concern because our ventilation unit will be a Viessmann Vitovent 300-W H32S C400 with a maximum airflow of 400 m³/h (235 cfm).
Also, the Ø130 mm (5 inches) diameter mentioned in the legend makes me think. If I understand the installation manual of the Viessmann mechanical ventilation correctly, larger duct diameters would be necessary for our system, which also raises my worries about noise.
What do you think about the placement of the vents? We definitely want to adjust some locations, as for example the supply vent in the bedroom on the upper floor is exactly at head height where our bed will be. Also, I’m not sure if the exhaust vent in the upper floor hallway is a good idea there — might we be pulling cooking smells up even more through the air space? In the living room on the ground floor, the outlet is exactly at foot level next to our L-shaped sofa; could that be uncomfortable in winter? Shouldn’t the exhaust in the kitchen be closer to the cooking area? In the basement and ground floor, the vents come out of the ceiling, and on the upper floor from the walls, presumably avoiding exterior walls.
I’m absolutely not an expert, just someone who likes to read up on things, so it might all be okay. But as I said, quite a few things have already gone wrong due to carelessness, and I am not sure if the planner was even properly informed about the exact mechanical ventilation unit, especially since there are three variants of the Vitovent 300-W with different maximum airflow rates.
Could you help me a bit or even ease my fear of mistakes?
We are very grateful for your help, for sure!
Best regards
Paul
I received today the planning documents from the prefab house manufacturer regarding the mechanical ventilation with heat recovery. Please see the attached images. The plan itself was created by an external company, not the house builder.
However, since several things have already gone wrong with the builder, I have some concerns with such a sensitive topic as the design of the mechanical ventilation system, and I would like to ask for your advice here to be sure that no shortcuts are being taken. As you can read here, even the smallest details can play a big role, for example when it comes to noise levels.
According to the legend, the plan is for a Zehnder mechanical ventilation system, which is already a concern because our ventilation unit will be a Viessmann Vitovent 300-W H32S C400 with a maximum airflow of 400 m³/h (235 cfm).
Also, the Ø130 mm (5 inches) diameter mentioned in the legend makes me think. If I understand the installation manual of the Viessmann mechanical ventilation correctly, larger duct diameters would be necessary for our system, which also raises my worries about noise.
What do you think about the placement of the vents? We definitely want to adjust some locations, as for example the supply vent in the bedroom on the upper floor is exactly at head height where our bed will be. Also, I’m not sure if the exhaust vent in the upper floor hallway is a good idea there — might we be pulling cooking smells up even more through the air space? In the living room on the ground floor, the outlet is exactly at foot level next to our L-shaped sofa; could that be uncomfortable in winter? Shouldn’t the exhaust in the kitchen be closer to the cooking area? In the basement and ground floor, the vents come out of the ceiling, and on the upper floor from the walls, presumably avoiding exterior walls.
I’m absolutely not an expert, just someone who likes to read up on things, so it might all be okay. But as I said, quite a few things have already gone wrong due to carelessness, and I am not sure if the planner was even properly informed about the exact mechanical ventilation unit, especially since there are three variants of the Vitovent 300-W with different maximum airflow rates.
Could you help me a bit or even ease my fear of mistakes?
We are very grateful for your help, for sure!
Best regards
Paul
baueninbw schrieb:
Please don’t take this the wrong way, but in my opinion the points you raised (or rather mentioned) have nothing to do with the actual questions I asked. I believe my questions were clearly stated, and all these side issues don’t help solve the problem.
If there were forum members here who could assist me, a productive dialogue would naturally develop on its own.Why do you think anyone would make the effort, despite openly stating they don’t have specific product knowledge related to your question, to share their 20,000-post experience in this forum with you? Is it because I have no clue what counts as a side issue and when there is a causal connection between basics and disappointed expectations of answers???And as for whether the experts might happen to find their way into your thread, I have no idea either.
Netiquette, grade six minus, fail!
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