S&P IDEO 450 ECOWATT Mode D'emploi page 32

Supply/extraction airflow adjustment
In the case that in the building is a chimney, gas oven or any apparatus which needs
combustion air and there is no additional supply air opening for this, it is necessary to adjust
the unit in the way that the combustion is not affected. It is necessary to add a
supplementary air supply equal to the extract airflow due to the natural draught of the
chimney.
This feature can be used also to balance once the installation is finished the two airflows.
Airflow (dis)balancing
Potentiometer setting
% QSupply/QExtraction
Example:
•
Minimum calculated airflow= 90m3/h
•
Supply airflow necessary= 99 m3/h
→ Potentiometer position 5 = +10%
The adjustment is made on the supply airflow compared with extraction airflow.
Extraction airflow
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