User Manual

EN
17
Appliance description
www.bora.com
INFO If the cooktop extractor is used in a recirculating
air system, when a power level is set the
operating time is automatically deducted from the
recirculation filter service life. The remaining filter
service life can be seen in the menu under menu
item A (see Operation chapter).
4.2.3 Overview of features and functions
Features CKA2
Automatic fan detection

Electronic power adjustment

Interface communication

Compact grease filter unit

Functions
Automatic after-run

Power setting

Automatic extractor function

Filter service indicator (recirculation mode)

Safety devices
Control lock

Safety shut-down

active error monitoring

Tab. 4.7 Overview of features and functions
4.2.4 Structure
Cooktop extractor CKA2
4
3
2
1
Fig. 4.5 BORA Classic cooktop extractor CKA2
[1] Air inlet nozzle
[2] Grease filter unit
[3] Cooktop extractor
[4] Control unit
4.2 Cooktop extractor
INFO The cooktop extractor CKA2 is the central
component and contains all of the electronics for
operating the entire BORA Classic 2.0 system. It
is not possible to operate the system or individual
components without a cooktop extractor.
4.2.1 Model description
Model Long description
CKA2 BORA Classic cooktop extractor flexible system
with separate control unit, can be combined with
the Classic cooktops and other BORA Universal
components
Tab. 4.6 Model description
4.2.2 Installation variations
Depending on what you opted for when purchasing, the
cooktop extractor can be operated as an exhaust air or an
recirculating air version.
Exhaust mode
The air suctioned away is purified by the grease filter and
expelled into the open air via a duct system.
The exhaust air must not be expelled into:

a smoke or exhaust gas flue that is in operation

a shaft used for the aeration of rooms where fireplaces
are installed.
If the exhaust air is to be directed into a smoke or
exhaust gas flue that is not in use, the installation must
be checked and approved by the responsible heating
engineer.
INFO If the cooktop extractor is used in an exhaust
air system, the extractor power is automatically
increased for the first 20 seconds when set on a
lower power level (wall sleeve function).
Recirculation mode
The air suctioned away is purified by the grease filter and
an activated carbon filter and fed back into the room in
which the appliance is installed.
To prevent odours in recirculation mode, an odour filter
must be used. For hygiene and health reasons, this must
be replaced at the recommended intervals (see the
Cleaning and maintenance chapter).
INFO In recirculation mode, ensure sufficient ventilation
and aeration to expel humidity.