Connection for air extraction
Important: To avoid the danger of toxic fumes please observe the Warning and Safety instructions. This is especially crucial when using the cooker hood at the same time as another heating appliance which relies on air from the same room. The cooker hood should be installed according to local and national building regulations. Seek approval from the building inspector where necessary.
–All ducting, pipework and fittings must be of
–The exhaust ducting should be as short and straight as possible.
–To ensure efficient air extraction, the diameter of the exhaust ducting should not be less than 150 mm.
If exhaust ducting with a diameter of less than 150 mm, or if flat ducting is used, the noise level of the cooker hood will increase and extraction will be less efficient.
Only reduce the diameter of the ducting if absolutely necessary, e.g. where narrower ducting has already been installed.
–Only use wide radius bends. Tight bends reduce the air throughput of the cooker hood.
–Only use smooth pipes or flexible hoses made from
If the exhaust ducting is secured to the exhaust stub by a hose clip, ensure that it is fitted correctly. Do not overtighten.
Otherwise the exhaust stub could buckle and the
–Where ducting is horizontal, it must be laid to slope away at at least 1 cm per metre.
This is to ensure that condensate cannot drain back into the cooker hood.
–If the exhaust air is to be ducted into the open air, the installation of a telescopic wall vent is recommended.
–If the exhaust air is to be ducted into a vent flue, the ducting must be directed in the flow direction of the flue.
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