Miele DA 6796 W Operating And Installation Instructions page 39

Connection for air extraction
Recirculation mode
The silencer needs to be positioned
between the exhaust socket and the
directional unit . Ensure there is
adequate space for fitting it.
Extraction mode with external motor
To minimise noise from the motor in the
kitchen, the silencer should be
positioned in front of the external motor
 if possible, or, if the ducting is long,
above the exhaust socket on the
cooker hood . In the case of an
external motor located inside the
house, fitting a silencer behind the
external motor  reduces the noise of
the motor outside the house.
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