Slightly OT. Gas cooker clearances.

Daughter just moved into her first house and wants to get a gas cooker fitted. Fitters are dubious about clearances of fitted kitchen.
There are official recommendations on distances above the hob and some centimetres sideways. Can anyone point me to precise details? If the manufacturer recommends different is this OK.
Thanks for any replies
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Invisible Man wrote:

You should always go with the clearances stipulated by the cooker/hob manufacturer. This can be awkward and lead to head-scratching when no instruction manual is available, but if she's buying a new cooker that won't be a problem.
If she hasn't already bought the cooker and wants to be sure it will fit, I would be amazed if the manual for any current model wasn't available online for downloading.
David
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Recommended clearances where manufacturers DO NOT give clear guidance.
Standalone cooker... - 20mm gap between Cooker-Side & Bottom-Unit-Side - 150mm gap between Cooker-Side & anything on the Worktop-up-to- Ceiling - 610mm gap above any eyelevel gas grill
Built-in Hob... - 760mm gap between Hob & Cupboard over it - 50mm gap between Hob-Side & L/R-cupboards within 460mm above - 50mm gap between Hob-Rear & Worktop-Rear - 300mm gap between adjacent wall/cupboard/surface to Hob-Side
Clearly the first 3 are about fire. Clearly the last 1 is about safety (having somewhere to move stuff off a hob).
Where a hood is installed above a cooker or hob, the greater of the separation measurements given in either the cooker or hood installation instructions should always be used if they are different.
Electric is a bit simpler - although then there is the argument about FTE vs H07RNF vs H05BBF etc and the cooker actually having an oblong cable clamp & cable entry hole that can't take 6mm round without filing metal away which involves standing on your head!
So as stated you actually need the manufacturers instructions. Keep a copy of those instructions around so you don't end up with a kitchen being chopped up if it does not comply with the "default".
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