Miele CS 1223-1 Operating And Installation Instructions page 34

Safety distances
Minimum safety distances un-
derneath the hob
To ensure sufficient ventilation to the
hob, a certain gap must be left between
the underside of the hob and any oven,
interim shelf or drawer.
The minimum gap between the under-
side of the hob and
– the top of an oven is 15 mm.
– the top of an interim shelf is 15 mm.
– the base of a drawer is 75 mm.
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Interim shelf
It is not necessary to fit an interim shelf
underneath the hob but one may be fit-
ted if you wish.
Leave a gap of 10 mm at the back of
the shelf to accommodate the cable.
We recommend a gap at the front of the
shelf of 20 mm to ensure good ventila-
tion.