Oceanic OCEAHC440S9 Guide D'utilisation page 39

Installing the hood
•
Bent elbows and S-shaped profiles do not provide
efficient air extraction. They are not recommended
for using.
Installation (Mode recycling)
If you do not have an exit to the
outside, the exhaust duct is not
required,
procedures are same as
those described except that no
extraction duct is to be installed..
When charcoal filters are used, the suction power is
decreased.
and the installation
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