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7
The installation shall comply
with the dimensions in Figures
3 and 4, bearing in mind that:
■ A partition between the
base of the hob and the
cupboard below should
be fitted 0 mm
below the workbench
surface if the cupboard is
to be used for storage.
■
500 mm
650 mm
450 mm
100 mm minimum between the side
of the cut-out and the side wall
3
If the hob is installed over
a built-in oven, the oven
shall be provided with
cooling fan motor.
The two appliances shall
be connected to the gas/
electrical supply with
independent connections.
■
Figure 5
Overhead clearances - In no case shall the clearance between the highest part of
the hob and a range hood be less than 600 mm, or for an overhead exhaust fan
800 mm.
Any other downward facing combustible surface less than 600 mm above the highest
part of the hob shall be protected for the full width and depth of the cooking surface
area in accordance with local regulations inforce. However, in no case shall this
clearance to any surface be less than 450 mm.
Standards requirement
Temperature of nearby surfaces. Australian and New Zealand Gas Installation Standards
(AS5601, NZS5261) require a cooktop to be installed so that the surface temperature of
any nearby combustible surface will not exceed 65°C above ambient.
This is typically achieved by:
■
having the cooktop spaced away from the wall (see figures 3, 4, 5);
OR
■
protecting the wall to a height of at least 150 mm along its length (minimum height
of non-combustible material when used on adjacent walls) with non-combustible
surface materials such as:
- 5 mm-thick ceramic tiles (these alone are adequate)
- tempered glass or sheetmetal, minimum thickness 0.4 mm (acceptable when used
in front of a fire resistant material).