0per8or
2019-11-27 13:25:16
- #1
Hello everyone,
I am currently planning the controlled residential ventilation for my new build (solid house). Here are the key data:
- Area: 251 m2, room height basement: 2.55 m, room height ground floor, attic: 2.60 m
- Volume flows (according to Helios planning tool) attached
- Central controlled residential ventilation with heat recovery planned in the basement
- Outdoor air through exterior wall, exhaust air through roof
- Planned controlled residential ventilation: Zehnder ventilation unit comfoair Q450 TR enthalpy or Helios EC500 W
- Floor plans with planning of valves and pipes attached
- 75 mm pipes in precast ceiling
- Flow velocity designed to < 2.0 m/s
- Overflow openings in door frames
- Implementation preferably as own work
Specifically, I have the following questions:
1. Do the volume flows and the positioning of the supply and exhaust air valves fit?
2. A granny flat is planned in the basement. Can the volume flows for this also be planned so that supply and exhaust air are equal and the overflow opening in the door to the corridor can be omitted? The main apartment and the granny flat would then form two independent ventilation areas.
3. A Finnish sauna (used 2-3 times/month) is planned in the attic. Would you integrate this room into the controlled residential ventilation or lead the exhaust air out through the bathroom?
4. Should the technical room where the controlled residential ventilation is located also get its own outlet for supply or exhaust air?
5. Should the ratio of supply air to exhaust air per floor be roughly equal? Currently, the ground floor and attic have significantly more supply air and the basement significantly more exhaust air.
6. The exhaust pipe for the storage room in the basement is very short. Could this cause noise?
Best regards
0per8or

I am currently planning the controlled residential ventilation for my new build (solid house). Here are the key data:
- Area: 251 m2, room height basement: 2.55 m, room height ground floor, attic: 2.60 m
- Volume flows (according to Helios planning tool) attached
- Central controlled residential ventilation with heat recovery planned in the basement
- Outdoor air through exterior wall, exhaust air through roof
- Planned controlled residential ventilation: Zehnder ventilation unit comfoair Q450 TR enthalpy or Helios EC500 W
- Floor plans with planning of valves and pipes attached
- 75 mm pipes in precast ceiling
- Flow velocity designed to < 2.0 m/s
- Overflow openings in door frames
- Implementation preferably as own work
Specifically, I have the following questions:
1. Do the volume flows and the positioning of the supply and exhaust air valves fit?
2. A granny flat is planned in the basement. Can the volume flows for this also be planned so that supply and exhaust air are equal and the overflow opening in the door to the corridor can be omitted? The main apartment and the granny flat would then form two independent ventilation areas.
3. A Finnish sauna (used 2-3 times/month) is planned in the attic. Would you integrate this room into the controlled residential ventilation or lead the exhaust air out through the bathroom?
4. Should the technical room where the controlled residential ventilation is located also get its own outlet for supply or exhaust air?
5. Should the ratio of supply air to exhaust air per floor be roughly equal? Currently, the ground floor and attic have significantly more supply air and the basement significantly more exhaust air.
6. The exhaust pipe for the storage room in the basement is very short. Could this cause noise?
Best regards
0per8or