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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.
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Exhaust air must not be discharged via a
smoke or exhaust gas flue which is already
in use or via a shaft which is used for
ventilating rooms in which fireplaces are
located.
Discharge exhaust air in accordance with
official and statutory regulations (e.g.
national building regulations).
Discharge of air into smoke or exhaust air
flues which are not in use requires the
consent of a heating engineer.
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If the extractor hood is operated in
exhaust-air mode at the same time as a
flue-type heater (e.g. gas, oil or solid-fuel
heater, instantaneous water heater, boiler),
ensure that there is an adequate air
supply which the heater requires for
combustion.
Safe operation is possible provided that the
partial vacuum in the room in which the
heater is installed does not exceed 4 Pa
(0.04 mbar).
This can be achieved if the combustion air is
able to flow through non-lockable openings,
e.g. in doors, windows and in conjunction
with an air supply/air-intake wall
box or by other technical procedures such as
reciprocal interlocking.
This can be achieved if the combustion air is
able to flow through non-lockable openings,
e.g. in doors, windows and in conjunction
with an air supply/air-intake wall
box or by other technical procedures such as
reciprocal interlocking.
If the air intake is inadequate, there is a
risk of poisoning from combustion gases
which are drawn back into the room.
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 gas cookers.
The extractor hood can be used without
restriction in circulating air mode – with an
activated carbon filter.
An extractor hood which is operated in
exhaust-air mode should be fitted with a
one-way flap if there is no one-way flap in
the exhaust-air pipe or wall box.
If a one-way flap is not supplied with the
appliance, you can purchase one from your
dealer.
Do NOT cut out the inner part of the
exhaust-air connection.
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