Connection For Air Extraction - Miele DA 3566 Operating And Installation Instructions


If this cooker hood is used at the
same time as a heating appliance
that relies on oxygen from the same
room there is a risk in certain circum‐
stances of toxic fumes building up.
It is essential that the "Warning and
Safety" instructions are observed.
The cooker hood should be installed
according to local and national build‐
ing regulations. Seek approval from
the building inspector where neces‐
sary.
 Use smooth or flexible ducting made
from approved non-flammable mate‐
rials for exhaust ducting.
 When using an external motor, make
sure that the exhaust ducting is suffi‐
ciently rigid. The external motor can
cause an underpressure which can
result in the exhaust ducting distort‐
ing.
 To achieve the most efficient air ex‐
traction with the lowest noise levels,
please note the following:
– To ensure efficient air extraction, the
diameter of the exhaust ducting
should not be less than 150 mm.
– If flat ducting is being used, the cross
section must not be smaller than the
cross sectional area of the exhaust
socket.
– The exhaust ducting should be as
short and straight as possible.
– Only use wide radius bends.
– The exhaust ducting must not be
kinked or compressed.
– Ensure that all connections are
strong and airtight.

Connection for air extraction

Remember that any constriction of
the air flow will reduce extraction
performance and increase operating
noise.
 If the exhaust is ducted through an
outside wall, a telescopic wall vent or
a roof vent (available as an optional
accessory) is recommended.
 If the exhaust air is to be ducted into
a flue, the ducting must be directed
in the flow direction of the flue.
 When ducting is horizontal it must be
laid to slope away at at least 1 cm
per metre. This is to ensure that con‐
densate cannot drain back into the
appliance.
 If the exhaust ducting is to run
through rooms, ceiling space etc.
where there may be great variations
in temperature between the different
areas, the problem of condensation
will need to be addressed. The ex‐
haust ducting will need to be suitably
insulated.
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