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Informations on air ow
10. Informations on air ow
The exhaust air line should be as short
and straight as possible.
To avoid excessive noise or a reduced
extraction capacity the diameter of
the exhaust air pipeline should not be
less than 150 mm.
Use or form only large radius bends.
Small radius bends reduce the extrac-
tion capacity of the hood.
Use only smooth pipelines or exible
hoses of non-ammable materials for
the exhaust air pipeline
If the exhaust air pipeline is horizon-
tally routed, there must be a minimum
gradient of 1 cm per metre or an incli-
nation angle of 2°. (Fig. 3) Otherwise
condensation water could run into the
extractor hood motor.
If the exhaust air is directed into an
exhaust air duct, the end of the entry
tting must be directed in the direc-
tion of ow.
If the exhaust air is directed into an
exhaust air duct, the end of the entry
tting must be directed in the direc-
tion of ow.
If the exhaust air pipeline is routed
though cool rooms, los etc. there can
be a large temperature drop within
the individual parts of the pipeline,
resulting in sweating or condensation
water production. This renders outlet
pipeline insulation necessary.
In some cases a condensation water
barrier must be installed in addition to
adequate insulation
The manufacturer is not responsible for
any faults occurring through non-com-
pliance with the above information and
provisions.
!
Fig. 3: inclination angle of the exhaust
air pipeline
Note: Images are for illustration purpo-
ses only and may vary.
1 2 3
Fig. 1: Exhaust air into the open
Fig. 2: Exhaust air via air sha/chimney
68


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