AEG 1200 D Istruzioni per l'uso e l'installazione - Pagina 5

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The national decree on fuel-burning systems specifies a

maximum depression of 0.04 bar in such rooms.

The air outlet must not be connected to chimney flues or

combustion gas ducts. The air outlet must under no circum-

stances be connected to ventilation ducts for rooms in which

fuel-burning appliances are installed.

It is advisable to apply for authorization from the relevant

controlling authority when connecting the outlet to an

unused chimney flue or combustion gas duct.

The air outlet installation must comply with the regulations

laid down by the relevant authorities.

When the unit is used in its extractor version, a sufficiently

large ventilation hole must be provided, with dimensions that

are approximately the same as the outlet hole.

National and regional building regulations impose a number

of restrictions on using hoods and fuel-burning appliances

connected to a chimney, such as coal or oil room-heaters

and gas fires, in the same room.

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

large 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

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.