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Prior to installation
Exhaust-air mode
The exhaust air is discharged upwards
through a ventilation shaft or directly
through the outside wall into the open.
D
Exhaust air should neither be directed
into a smoke or exhaust flue that is
currently used for other purposes, nor into a
shaft that is used for ventilating rooms in
which stoves or fireplaces are also located.
Local authority regulations must be
observed when discharging air into smoke
or exhaust flues that are not otherwise in
use.
D
When the extractor hood is operated
in exhaust-air mode simultaneously with
a different burner which also makes use
of the same chimney (such as gas, oil or
coal-fired heaters, continuous-flow heaters,
hot-water boilers) care must be taken to
ensure that there is an adequate supply
of fresh air which will be needed by the
burner for combustion.
Safe operation is possible provided that the
underpressure in the room where the
burner is installed does not exceed 4 Pa
(0.04 mbar).
This can be achieved if the combustion air
can be replenished by being able to flow
through non-closeable openings such as in
doors, windows, wall ventilation boxes, or
by alternative technical measures such as
reciprocally shutting the other device off,
etc.
An air-intake/exhaust-air wall box by itself is
no guarantee that the limiting value will not
be exceeded.
Note: When assessing the overall
requirement, the combined ventilation
system for the entire household must be
taken into consideration. This rule does not
apply to the use of cooking appliances,
such as hobs and ovens.
All legal requirements concerning the
discharge of exhaust air must be observed.
Unrestricted operation is possible if the
extractor hood is used in recirculating mode
– with activated carbon filter.
The extractor hood should be fitted with a
one-way flap for exhaust-air mode if there is
not already one installed in the exhaust-air
pipe or wall box. If a one-way flap is not
enclosed with the appliance, purchase one
from a specialist outlet (see optional acces-
sories on the last page).
16
Attaching the one-way flap
❑ Insert the two lugs on the one-way flap
into the holes on the air-pipe connector
or air outlet and lock into position.
Before installing the one-way flap, ensu-
re that the lettering or stamp is on the out-
side.
Optimum performance of the extractor
hood:
❑ Short, smooth extraction pipe.
❑ As few pipe bends as possible.
❑ Largest possible pipe diameter (prefera-
bly 150 mm ø) and large pipe bends.
❑ Round pipes:
We recommend
for single-motor model,
inner diameter of at least 120 mm
for double-motor model.
inner diameter of at least 150 mm
❑ Flat ducts must have an inner cross-
section equivalent to round pipes
which have an inner diameter of
120/150 mm.
120 mm l approx. 113 cm
150 mm l approx. 177 cm
❑ If pipe diameters differ: use sealing
strip.
❑ Ensure an adequate air supply for
exhaust-air mode.
Pipe connection
Extractor hoods with 120 mm Ø air
outlet:
100 mm Ø extraction pipe
❑ Insert the reducing connector (see optio-
nal accessories on the last page) into the
air-pipe connector and then attach the
exhaust-air pipe.
120 mm Ø extraction pipe
❑ Attach the exhaust-air pipe directly to
the air-pipe connector.
Extractor hoods with 150 mm Ø air
outlet:
150 mm l extraction pipe
❑ Screw the reducing connector (see
optional accessories on the last page)
onto the air outlet.
❑ Attach the extraction pipe to the redu-
cing connector.
150 mm l extraction pipe
❑ Attach the exhaust-air pipe directly to
the air outlet..
If a one-way flap has been fitted, con-
duct a performance test.
Extractor hoods with
rectangular air
outlet:
❑ Screw the enclosed
air-pipe connector
over the air outlet.
Recirculated air mode
❑ The air cleaned by
an additional activa-
ted carbon filter is
conveyed back into
the room.
❑ In recirculated air
mode the exhaust
opening must be
2
protected by a grille
2
(see optional accessories on the last
page) in order to prevent a mechanical
or electrical hazard.
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