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EN
21
Installation
www.bora.com
6.6 Establishing the power
connection and communication
Observe all safety and warning information (see the
Safety section).
Observe all national and regional laws and regulations
as well as the supplementary regulations of the local
utility companies.
The plug for the power supply must be accessible
following installation.
If the power supply cable has been damaged this must
be replaced.
Connecting the control unit and fan to the
cooktop extractor
86
4
2
1
75
3
Fig. 6.26 Connections on the control unit
[1] CAT 5 communication cable
[2] Home Out
[3] Home In
[4] Fan 1 control line
[5] Fan 2 control line
[6] Fan 1 power supply cable
[7] Fan 2 power supply cable
[8] Power supply cable with microfuse
1
Fig. 6.27 CAT 5 communication cable connection
Connect the CAT 5 communication cable between the
cooktop extractor connection [1] and the control unit
[1].
Installing the additional fan
Install the additional fan in the exhaust duct.
Ensure that a minimum clearance of 300 cm is
maintained between the fan units.
Only use BORA universal fans with your BORA cooktop
extractor system.
Operating the cooktop extractor with a
fireplace that depends on the air in the room
INFO National and regional laws and regulations
must be observed with regard to the exhaust
duct design. A sufficient air supply must be
ensured.
Fireplaces that depend on the air in the room (e.g. gas,
oil, wood or coal-fired heaters, continuous-flow water
heaters, instantaneous water heaters) draw in air from
the room in which they are installed and release the
exhaust fumes into the outside air via an exhaust system
(e.g. chimney).
If the cooktop extractor is used in exhaust mode, it draws
in air from the room in which it is installed as well as from
neighbouring rooms. If the air supply is insufficient, low
pressure will occur. Toxic gases could be drawn out of the
chimney or extraction ducting and back into the room.
Fig. 6.24 Exhaust air installation – not permitted
Fig. 6.25 Exhaust air installation – correct
If simultaneously operating both a fireplace and the
cooktop extractor in the same room, ensure that:
the maximum low pressure is 4 Pa (4 x 10–5 bar);
a safety device (e.g. window contact switch, low
pressure warning device) is used to ensure that a
sufficient supply of fresh air is guaranteed;
the exhaust air is not be ducted into a chimney that
is used for exhaust gases of devices operated with
gas or other combustibles;
the installation is checked and approved by an
authorised certified engineer (e.g. heating engineer).
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