AEG 825 D, Инструкция по установке и эксплуатации

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8
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Regulations on fuel-burning systems specify a maximum
depression of 0.04 bar in such rooms.
●
Hoods can only be used safely with appliances connected to a
chimney if the room and/or flat (air/environment combination) is
ventilated from outside using a suitable ventilation hole approxi-
mately 500-600 cm
2 to avoid the possibility of a depression being
created during operation of the hood.
If you have any doubts, contact the relevant controlling authority
or building inspector’s office.
●
Since the rule for rooms with fuel burning appliances is “outlet hole
of the same size as the ventilation hole”, a hole of 500-600 cm
2
,
which is to say a larger hole, could reduce the performance of the
extractor hood.
●
If the hood is used in its filtering function, it will operate simply and
safely in the above conditions without the need for any of the
aforementioned measures.
●
When the hood is used in its extractor function, the following rules
must be followed to obtain optimal operation:
— short and straight outlet hose
— keep bends in outlet hose to a minimum
— never install the hoses with an acute angle, they must
always follow a gentle curve only
— keep the hose as large as possible (120 mm Ø min.).
●
Failure to observe these basic rules will drastically reduce the
performance and increase the noise levels of the extractor
hood.
●
Where flexible ducting is fitted the length should be no more
than:
— 3 metres with one 90° bend
— 2 metres with two 90° bends.
Bends of more than 90° will reduce the efficiency of the hood
and reduce the air flow.