AEG 222D Ventilation Hood User Manual


 
9
The national decree on fuel-burning systems specifies 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
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 (120 mm Ø min.).
Failure to observe these basic rules will drastically reduce the
performance and increase the noise levels of the extractor hood.