41
Balancing
Important information
It is important to measure the total supply air and the total extract air. The system must have a minimum vacuum, which means it draw
out more air than it blows in. This will prevent dampness from being forced into the constructions of the building.
Balancing holes
The ventilation unit has been equipped with balancing holes for measuring the volumes of the supply air and the extract air. You can
measure the volume through a ball pump valve, which you insert into the 4 holes.
Using the curve chart, you can set, approximately, the main air volume at dry operation without condensation.
At the side with the extract air, measure the pressure difference dP3-4 [Pa] between the holes marked 3 and 4. Read the air volume
qv [m
3
/h] on the curve chart.
At the side with the supply air, measure the pressure difference dP1-2 [Pa] between the holes marked 1 and 2. Read the air volume qv
[m3/h] on the curve chart.
Once you have carried out the measurements, cover the 4 holes with the round stickers provided.
ATTENTION
To ensure the ventilation system operates optimally, it is important that it is balanced correctly. We recommend that
experts do this.
ATTENTION
The capacity in the pressure loss diagram is based on a dry exchanger.
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