Connection For Air Extraction; Non-Return Flap - Miele DAW 1620 Active Operating And Installation Instructions

Connection for air extraction


If the 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 cir-
cumstances 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.
Only use smooth pipes or flexible ex-
haust ducting made from approved
non-flammable materials for exhaust
ducting.
To achieve the most efficient air
throughput with the lowest noise levels,
please note the following:
- The diameter of the exhaust ducting
must not be smaller than the cross-
section of the exhaust duct (see "Ap-
pliance dimensions"). This applies in
particular when using flat ducting.
- 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.
- All connections must be strong and
airtight.
- If the exhaust ducting has flaps,
these must be opened whenever the
cooker hood is switched on.
Any constriction of the air throughput
will reduce extraction performance
and increase operating noise.
Flue
If the exhaust air is to be ducted into a
flue, the ducting must be directed in the
flow direction of the flue.
If the flue is used by several ventilation
units, the cross-section of the flue must
be large enough.

Non-return flap

 Use a non-return flap in the exhaust
system.
A non-return flap ensures that when the
cooker hood is not in operation, the
duct is closed to prevent unwanted ex-
change of room air and outside air.
If the exhaust is ducted through an out-
side wall, a Miele wall vent or roof vent
(available as an optional accessory) is
recommended. Both of these have a
built-in non-return flap.
If the on-site ventilation system does
not have a non-return flap, one is sup-
plied with the cooker hood.
The non-return flap is fitted in the ex-
haust socket of the fan.
Installation
27