Miele KM 7200 FR Operating And Installation Instructions page 60

Installation
Minimum safety distance underneath
the hob
To ensure sufficient ventilation to the
hob, a minimum safety distance must
be left between the underside of the
hob and any oven, intermediate shelf or
drawer.
The minimum safety distance between
the underside of the hob and
- Upper edge of oven: 15 mm
- Upper edge of intermediate shelf:
15 mm
- Upper edge of drawer: 5 mm
- Base of drawer: 75 mm
60
Intermediate shelf
It is not necessary to fit an intermediate
shelf underneath the hob, but one may
be fitted if you wish.
Side view
a Front
b Gap, front
c Gap, back
A gap  of 20 mm is recommended at
the front between the cabinet and
intermediate shelf for better ventilation
of the hob.
Leave a gap  of 10 mm at the back
between the cabinet and the
intermediate shelf to accommodate
the power cable.