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Connection for air extraction
Silencer
(optional accessory)
To achieve even further reductions in
noise levels, a special silencer can be
fitted in the ducting system.
32
...with air extraction:
The silencer not only reduces noise
from the fan, but also sounds from
outside (e.g. traffic noise).
For this reason the silencer must be
positioned as close as possible to where
the ducting leaves the building a.
...in recirculation mode:
The silencer needs to be positioned
between the fan and the exhaust grille
b. Ensure there is adequate space for
fitting it.
In all modes of operation, the most
effective noise reductions are
achieved if two silencers are fitted in
the system.
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