Installation - CDA CCA51 Installation, Use And Maintenance Manual

Installation

When the extractor is to be installed above an electric hob, the
minimum distance between the hob and extractor must exceed
600mm (650mm is recommended).
When the extractor is to be installed above a gas hob, the minimum
distance between the hob and extractor must exceed 700mm
(750mm is recommended).
If the instructions provided with your gas hob state that the required
distance between the hob and extractor must be greater than 700mm,
then that is the distance that should be observed; this is a legal
requirement and may lead to your hob being disconnected from the
gas supply and the installation being reported under RIDDOR (The
height should be measured from the top of the burners).
IN THE ABSENCE OF ANY INSTRUCTIONS SUPPLIED WITH THE
GAS HOB, THE MINIMUM DISTANCE BETWEEN THE HOB AND
EXTRACTOR MUST BE AT LEAST 760mm.
The width of any hob must not be greater than the width of the
extractor installed above it.
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