Miele DA 249-4 EXT Betriebs- und Installationsanleitung - Seite 35
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Silencer (DASD 150)
(optional extra)
To achieve even further reductions in
noise levels, a special silencer can be
fitted in the ducting system...
Connection for air extraction
. . . With air extraction:
The silencer not only reduces noise
from the motor outside the house, but
also sounds from outside (e.g. traffic
noise).
For this reason, the silencer must be
positioned as close as possible to the
ducting exit a.
. . . With air extraction with an
external motor:
To minimise fan noise in the kitchen, the
silencer should be positioned in front of
the motor b and, with longer exhaust
ducting, on the exhaust connection c
of the rangehood.
With an external motor installed within
the house, the use of a silencer behind
the external motor d enables a
reduction of fan noise by directing it
outside.
In all modes of operation, the most
effective noise reductions are
achieved if two silencers are fitted
one behind the other in the system.
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