Manual KKT Kolbe HERMES907WM (page 68 of 72) (English, German)

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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

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KKT Kolbe HERMES907WM Manual

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