Miele DAS 2920 Betriebs- und Installationsanleitung - Seite 33
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Non-return flap
Make sure you use a non-return flap
in the exhaust air system.
A non-return flap ensures that when the
rangehood is not in operation, the duct
is closed and no exchange of room and
outside air can take place.
If the exhaust air is ducted through an
outside wall, a Miele wall vent or a
Miele roof vent (available as an optional
accessory) is recommended. These are
fitted with an integrated non-return flap.
If the on-site exhaust air system does
not have a non-return flap, one is
supplied with the rangehood.
The non-return flap is fitted to the fan's
exhaust connection.
Condensed water
If the exhaust ducting is to run through
rooms, ceiling space etc., condensate
may form in the ducting due to
variations in temperature between the
different areas. To minimise temperature
variations, the exhaust ducting will need
to be suitably insulated.
Where ducting is horizontal, it must be
laid to slope away at at least 1 cm per
metre. The gradient ensures that
condensate cannot drain back into the
rangehood.
In addition to insulating the exhaust
ducting, we recommend that a suitable
condensate trap is also installed to
collect and evaporate any condensate
which may occur.
Condensate traps are available for
125 mm or 150 mm ducting.
When installing a condensate trap,
ensure that it is positioned vertically
and, if possible, directly above the
exhaust socket. The arrow on the
housing indicates the direction of
airflow.
Miele will not accept warranty claims
for any functional defects or damage
caused by inadequate ducting.
Installation
33