Venting
The hood is more effective when used in the extraction mode (ducted to the outside).
Venting kits may be purchased through your retailer or DIY store, and must be ducted
to an outside vent of 150mm (5ins) or 125mm (5ins).
The best performance will be achieved by using the largest diameter ducting available.
Where flexible ducting is fitted the length should be no more than:
3 metres with one 90° bend
2 metres with two 90° bends
Bends of more than 90° will reduce the efficiency of the hood and reduce the airflow.
The ducting used must be manufactured from fire retardant material conforming to the relevant British Standard or
DIN
When the hood is ducted to the outside the charcoal filters must be removed.
Recirculation
If you are using the hood for recirculating, ensure the charcoal filters are in position following the instructions contained in the section (To Remove/Replace the Charcoal Filters).
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