� When the hood is used in its extractor function, the following rules must be followed to obtain optimal operation: - short and straight outlet ducting - keep bends in outlet ducting to a minimum - never install the ducts with an acute angle, they must always follow a gentle curve. - keep the duct as large as possible (preferably the same diameter as the outlet hole). � Failure to observe these basic instructions will drastically reduce the performance and increase the noise levels of the extractor hood.
