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Installation
6005142_0 – 24.02.2020
3.3 Requirements for individual operating modes
Further accessories may be required depending on the
operating mode.
3.3.1 Requirements for recirculated air mode
yRecirculated air fan on the fan outlet.
yCross-section of the ventilation slot in the superstructure
larger than 300 cm2.
yFilter filling freely accessible for changing.
3.3.2 Requirements for extracted air mode
yExhaust air ducting at the fan outlet.
D“3.4 Requirements for the exhaust air ducting
(only for extracted air mode or hybrid mode)”
(page 10).
yDiameter of the exhaust air ducting at least 125 mm
(corresponds to a surface area of approx. 123 cm2).
yAdequate fresh air supply is assured through the
installation of the necessary accessories.
yWindow contact switch.
yWall box.
3.3.3 Requirements for hybrid mode
yHybrid filter at the fan outlet.
yConnection of the exhaust air ducting to the hybrid filter.
D“3.4 Requirements for the exhaust air ducting
(only for extracted air mode or hybrid mode)”
(page 10).
yCross-section of the ventilation slot in the superstructure
larger than 300 cm2.
yDiameter of the exhaust air ducting at least 125 mm
(corresponds to a surface area of approx. 123 cm2).
yFilter filling freely accessible for changing.
yAdequate fresh air supply is assured through the
installation of the necessary accessories.
yWindow contact switch.
yWall box BMK-F 125.
3.4 Requirements for the exhaust air ducting
(onlyforextracted air mode or hybrid mode)
DWARNING!
Fire hazard and asphyxiation hazard due to improper
installation!
When using the exhaust air ducting with other devices
or when connecting an active exhaust air channel (e.g.
chimney), gases or smoke can be drawn into the room.
Make sure that the requirements for the exhaust air
ducting are complied with.
yThe exhaust air ducting is used exclusively by this device.
yThe exhaust air ducting is made of non-combustible
material in accordance with DIN 4102 class 1.
yWhen using a chimney as the exhaust air duct:
yThe chimney must not be used by other devices.
yThe extracted air must be introduced into the
chimney using a 90° bend pointing upwards.
yApproval by a master chimney sweep.
yWhen routing the exhaust air ducting through the roof or
the outside wall:
yThe cross-section must not be smaller than that of the
fan outlet.
yInstallation of condensed water collector in the
exhaust air ducting in order to prevent water damage
inside the device. The condensed water collector must
be adequately dimensioned.
The cross-section, length, type and course of the exhaust
pipe affect the extraction efficiency. Changing the direction
of the air too severely leads to a loss of performance and to
noise.
To optimise the device performance:
yKeep the exhaust air ducting as short as possible and
route it directly to the outside.
yThe stipulated cross-section of the exhaust air ducting is
complied with.
D“3.3 Requirements for individual operating modes
(page 10).
yExclusive use of ducts and bends with smooth inner
surfaces.
In order to avoid turbulence or backpressure in the
transported air - do not use:
ySpiral hoses.
yFlexible tubes.
yFlat deflection pieces.
ySharp-edged exhaust air channels.
The exhaust air ducting must be in place before installing the
device.
10


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