Miele KMDA 7476 FL, Operating And Installation Instructions

Page: 91 / 100

Installation
*INSTALLATION*
91
Ducting

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 of toxic fumes.
It is essential that the “Warning and
safety instructions” are observed.
The cooker hood should be installed
according to local and national
building regulations. Seek approval
from the building inspector where
necessary.
The cooker hood has an exhaust
connection of 222 x 89 mm.

For ducting, use smooth pipes or
flexible ducting made from approved
non-flammable materials.

To achieve the most efficient air flow
rate with the lowest noise levels,
please note the following:
- The cross-section of the ducting
must not be smaller than the cross-
section of the exhaust connection
(see “Appliance dimensions”).
- The ducting should be as short and
straight as possible.
- Only use wide radius bends.
- The ducting must not be kinked or
compressed.
- Ensure that all connections are
strong and airtight.
Remember that any constriction of
the air flow rate will reduce extraction
performance and increase operating
noise.

If the exhaust air is to be ducted into
a flue, the ducting must be directed in
the flow direction of the flue.

If ducting is to be laid horizontally it
must be laid with a downwards
sloping gradient. This is to ensure
that condensate cannot drain back
into the extractor.
 If the ducting is to run through rooms,
ceiling space, etc. there may be great
variations in temperature between the
different areas. The problem of
condensation will need to be
addressed. The ducting will need to
be suitably insulated.
 If the vent ducting does not sit
securely up against the vent
connection, stick the sealing strip
supplied to it.