Ducting - CDA EVX90SS Use And Maintenance

Ducting

The extractor can be used as a recirculation device or as an
extraction device, depending on your installation.
The hood is more effective when used in extraction mode (ducted
to the outside). When the extractor is ducted to the outside, char-
coal filters are not required. The ducting used must be 150mm (6
inches), we recommend rigid circular pipe and must be
manufactured from fire retardant material, produced to BS476 or
DIN102-B1.
Wherever possible utilise rigid circular pipe which has a smooth
interior, rather than the expanding concertina type ducting. The
maximum length of ducting without performance being affected is
as follows:
• 4 metres with 1 x 90° bend
• 3 metres with 2 x 90° bends
• 2 metres with 3 x 90° bends
Longer ducting can be used but the perfomance of the extractor
will be reduced.
Please note:
Ducting components and ducting kits are optional accesories and
have to be ordered, they are not automatically supplied with the
extractor. Use of ducting less than 150mm in diameter will affect the
perfromance and increase the noise produced by the extractor
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