AEG 335 D, Operating And Installation Instructions

39

• 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 approximately
500-600 cm

2 

 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

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 (preferably the same diameter
as the outlet hole).

• Failure to observe these basic instructions will drastically reduce the

performance and increase the noise levels of the extractor hood.