S&P CAD HE 450 H BASIC Manuel D'instructions page 30

advisable to do this after the second filter change. Of course, after the installation, the
filter clogging depends on the pollution of the area where the unit is installed. We
extract air is dusty and not representative. During the second filter check, if you notice
recommend checking the time in which the filter clogs and adjusting this period. It is
that the filters are clean you can increase the time (12 or 15, months), if you notice that the
advisable to do this after the second filter change. Of course, after the installation, the
filters are very dirty you should decrease the time (6 months).
extract air is dusty and not representative. During the second filter check, if you notice
Open the box and adjust the timing as shown. To do this, set the micro contacts 1 and 2
that the filters are clean you can increase the time (12 or 15, months), if you notice that the
as shown in the drawings below to adjust the month.
filters are very dirty you should decrease the time (6 months).
Open the box and adjust the timing as shown. To do this, set the micro contacts 1 and 2
as shown in the drawings below to adjust the month.
Filters alarm timing
Filters alarm timing
6 months
6 months
The black colour indicates the dip switch position.
Supply/extraction airflow (dis)balancing
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
Supply/extraction airflow (dis)balancing
adjust the unit in the way that the combustion is not affected. It is necessary to add a
In the case that in the building is a chimney, gas oven or any apparatus which needs
supplementary air supply equal to the extract airflow due to the natural draught of the
combustion air and there is no additional supply air opening for this, it is necessary to
chimney.
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
This feature can be used also to balance once the installation is finished the two
chimney.
airflows.
This feature can be used also to balance once the installation is finished the two
airflows.
airflow (dis)balancing
airflow (dis)balancing
Potentiometer setting
% QSupply/QExtraction
Potentiometer setting
% QSupply/QExtraction
Example:
• Minimum calculated airflow= 90m3/h
• Supply airflow necessary= 99 m3/h
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Example:
→ Potentiometer position 5 = +10%
9 months
(factory setting)
12 months
9 months
(factory setting)
12 months 15 months
15 months
Extraction airflow
Extraction airflow