To adjust the airflow turn the potentiometer carefully clock wise with a small screw driver. The
potentiometer has 16 positions (from 0 to F). To each of these positions are assigned an output
potentiometer has 16 positions (from 0 to F). To each of these positions are assigned an output
voltage to the fans. As higher the output voltage as higher the airflow and viceversa.
voltage to the fans. As higher the output voltage as higher the airflow and viceversa.
Factory setting: 1
speed = 3; 2
st
Factory setting: 1
speed = 3; 2
st
Filters alarm timing
Filters alarm timing
ON
ON
1
2
3
4
1
2
3
4
6 months
6 months
The black colour indicates the dip switch position.
The black colour indicates the dip switch position.
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
speed = 7 and 3
nd
speed = 7 and 3
nd
ON
ON
ON
1
2
3
4
1
1
2
3
4
9 months
(factory se
g)
9 months
(factory se
g)
speed = F.
rd
speed = F.
rd
ON
ON
ON
2
3
4
1
2
1
2
3
4
1
12 months
15 months
12 months
Extraction airflow
3
4
2
3
4
15 months
31
