Electrolux DF 6160 - Manual (Page 5)

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• If the hood is used in its recirculation mode, it will operate simply
and safely in the above conditions without the need for any of the
aforementioned measures.
• The ducting must be fire retardant, 120mm in diameter and the
length should be no more than:
3 metres with one 90 degree bend
2 metres with two 90 degree bends
Bends of more than 90 degrees will reduce the efficiency of the hood
and reduce the airflow.
• Failure to observe these basic instructions will drastically reduce the
performance and increase the noise levels of the extractor hood.