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For the installer
Only for model DF6160: when used as an extractor unit, the hood
must be fitted with a 120mm diameter hose.
Only for models DF 6260 - DF 6260-ml/1 and CHDF 6260: when
used as an extractor unit, the hood must be fitted with a 150mm
diameter hose.
Only for model DF 6260 - DF 6260-ml/1: should there already be a
hose of diameter 125 mm that ducts to the outside through the walls
or roof, it is possible to use the 150/125 mm reduction flange
provided. In this case the hood will be slightly more noisy.
When installing the hood, make sure you observe the
following minimum distance from the top edge of the
cooking hob/ring surfaces:
electric cookers 430 mm
gas cookers 650 mm
If the instructions for installation for the gas hob specify a greater
distance, this must be adhered to.
The national Standard on fuel-burning systems specifies a maximum
depression of 0.04 mbar in such rooms.
The air outlet must not be connected to chimney flues or combustion
gas ducts. The air outlet must under no circumstances be connected
to ventilation ducts for rooms in which fuel-burning appliances are
installed.
The air outlet installation must comply with the regulations laid down
by the relevant local authorities.
When the unit is used in its extractor version, a sufficiently large
ventilation hole must be provided, with dimensions that are approxi-
mately 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 approximately
500-600 cm2 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 cm2, which
is to say a larger hole, could reduce the performance of the extractor
hood.