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Before the installation
Exhaust operation - Fig. 2
Fumes are conveyed outside by means of a
pipe connected on the exhaust hole of the
hood.
☞
The hood cannot be connected to flues of
other appliances that run on energy sources
other than electricity or into a shaft used for
ventilating rooms in which fireplaces are located.
The requirements of the authorities concerned
have to be observed, for discharging air through
smoke or exhaust flues not in use.
☞
When the vapour exhaust hood is operated
with exhaust air at the same time that chimney-
dependent fire installations are used (e.g. gas-
, oil- or coal-fired heating systems, continuous
heaters or hot water boilers), provision must be
made for an adequate supply of air which the
fireplaces require for combustion.
Harmless operation is possible if the
underpressure in the room where the fireplace
is installed does not exceed 4 Pa (0.04 mbar).
This can be achieved if the combustion air can
flow through nonclosable openings, such as in
doors, windows intake/exhaust wall boxes or
other technical measures, such as mutual
locking or the like.
Note: In assessing this possibility, the entire
combined ventilation of the home must be
taken into consideration. This rule does not
apply for operation of cooking appliances, such
as cooking tops and gas cookers.
In case of doubt, the pertinent regulations or
guidelines of the country must be observed.
If the cooker exhaust hood is used in
recirculation operation - with active filter
operation is possible without restriction.
If the exhaust air is discharged through the
outside wall, a telescopic wall box should be
used. Fig. 2.1 (see special accessories in the
operating instructions).
Connection between vapour exhaust hood
and telescopic wall box:
• with an exhaust hose, or pipe.
Optimal efficiency of the vapour exhaust
hood:
• Short, smooth exhaust pipe.
• As few pipe bends as possible.
• Pipe diameters as large as possible
(preferably 150 mm) and large pipe bends.
• Flat ducts must have an inside cross-
section equal to the round pipes with 150
mm inside diameter.
150 mm Ø~177 cm
If there are different pipe diameters:
• Should there already be a pipe 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.
• Insert sealing strips.
• For exhaust operation, ensure that
adequate supply air is available.
• Make the exhaust hole as shown in Figure
5 (dotted area next to the ceiling).
Connection of exhaust air pipe 150mm diam.
• Fasten exhaust air pipe directly to the
exhaust air socket.
Recirculating air operation - Fig. 3
(if exhaust air operation is not possible).
The air purified by an additional active filter
is returned to the room.
GB
2
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