Hello, I hope you can help me with the following question.
We live in a detached single-family house built in 2018, meeting the KFW 55 standard, with walls made of filled brick. The house has a volume of almost 1000 cm3 (61 cubic inches).
We have a Wolf CWL 400 ventilation system. At the moment, only two of us live here (children are planned). We both work full time and leave the house at 7:00 AM and return around 6:00 PM on weekdays. Now we are wondering what the required air exchange rate should be and how to best set the ventilation system so that we need as little heating as possible in winter while still having clean air.
At night, the system runs at 130 m3 per hour (4600 cubic feet per hour), and during the day at 250 m3 per hour (8800 cubic feet per hour).
Basically, we want the bathroom and bedroom to be ventilated adequately. After showering, we ventilate the bathroom briefly anyway, but then wet towels still dry there.
Otherwise, we spend a short time in the kitchen and living room in the morning for breakfast and about three hours in the evening. In my opinion, the ventilation is set too high for this situation.
It looks different on weekends. There, we cook extensively, have guests, do laundry, etc. Therefore, I would leave everything as it is on Saturdays and Sundays, but for the weekdays I would like to hear your opinion.
We live in a detached single-family house built in 2018, meeting the KFW 55 standard, with walls made of filled brick. The house has a volume of almost 1000 cm3 (61 cubic inches).
We have a Wolf CWL 400 ventilation system. At the moment, only two of us live here (children are planned). We both work full time and leave the house at 7:00 AM and return around 6:00 PM on weekdays. Now we are wondering what the required air exchange rate should be and how to best set the ventilation system so that we need as little heating as possible in winter while still having clean air.
At night, the system runs at 130 m3 per hour (4600 cubic feet per hour), and during the day at 250 m3 per hour (8800 cubic feet per hour).
Basically, we want the bathroom and bedroom to be ventilated adequately. After showering, we ventilate the bathroom briefly anyway, but then wet towels still dry there.
Otherwise, we spend a short time in the kitchen and living room in the morning for breakfast and about three hours in the evening. In my opinion, the ventilation is set too high for this situation.
It looks different on weekends. There, we cook extensively, have guests, do laundry, etc. Therefore, I would leave everything as it is on Saturdays and Sundays, but for the weekdays I would like to hear your opinion.
B
BBaumeister8 Nov 2019 11:42I reviewed the architect’s documents again. The total volume, including the basement, is actually 710 m3 (basement is also ventilated). The air quality is really excellent. Even cooking odors disappear after a very short time. I might lower the system a bit during the day and see what happens. Thank you very much for your help in any case.
Where can I see the set airflow rate in m3/h (cubic meters per hour) on the system?
I have the Vallox MV 350, and as far as I can tell, only the fan power can be adjusted in percentage, separately for supply and exhaust air. I will take a picture of the interface menu when I get the chance.
Good luck
I have the Vallox MV 350, and as far as I can tell, only the fan power can be adjusted in percentage, separately for supply and exhaust air. I will take a picture of the interface menu when I get the chance.
Good luck
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