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44
Manual
–
AlphaAir Freshbox 25 Basic
10
Maintenance and cleaning
10.1
Filter material
Rectangular filter mats with dimensions 126x90 mm and a
thickness of up to 20 mm are used.
The standard scope of delivery includes class G3 filters, which
protect the heat exchanger from rapid fouling and the
occupants from penetrating coarse dust.
In principle, the unit can also be operated without filters, but
this shortens the cleaning intervals for the heat exchanger
accordingly.
Finer filters are available as an option, although it should be
noted that finer filters reduce the air flow rate and the unit
may therefore have to be operated at a higher level.
Special filters to mention are pollen filters and activated
carbon filters. The latter reduce exposure to exhaust fumes
and odors. They have proved their worth both in busy city
centers and in rural areas where a lot of heating is done with
wood and coal.
To maintain symmetry between supply and exhaust air, two
identical filters (left and right) should always be inserted. With
activated carbon filter on the right, the standard filter can also
remain inserted on the left.
If your filter has a fluffy and a hard side, the harder side rests
on the bottom of the grille.
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