15
fig.1
Installation
The air must be taken directly from the outside, from an area
far from sources of pollution.
The ventilation aperture must have the following
characteristics (fig.2A):
• total free cross section of passage of at least 6 cm² for
every kW of rated heating capacity of the appliance, with
a minimum of 100 cm² (the heating capacity is indicated
on the rating plate);
• it must be made in such a way that the aperture, both on
the inside and outside of the wall, cannot be obstructed;
• it must be protected, e.g. with grills, wire mesh, etc. in such
a way that the above-mentioned free section is not
reduced;
• it must be situated as near to floor level as possible.
Detail A
Adjacent
Room to be
room
ventilated
A
Examples of ventilation holes
Enlarging the ventilation slot
for comburant air
between window and floor
Fig. 2A
Fig. 2B
The air inflow may also be obtained from an adjoining room,
provided the latter is not a bedroom or a room where there
is a risk of fire, such as garages, mews, fuel stores, etc. and
is ventilated in compliance with the standards in force.
Air from the adjoining room to the one to be ventilated may
be made to freely pass through permanent apertures with a
cross section at least equal to that indicated above. These
apertures may also be obtained by increasing the gap
between the door and the floor (fig.2B).
If an electric fan is used for extracting the combustion
products, the ventilation aperture must be increased in
relation to its maximum performance. The electric fan
should have a sufficient capacity to guarantee an hourly
exchange of air equal to 3-5 times the volume of the kitchen.
Prolonged, intensive use of the appliance may require extra
ventilation, e.g. an open window or a more efficient ventilation
system by increasing the extraction power of the electric fan
if installed.
Liquid petroleum gas descends towards the floor as it is
heavier than air. Apertures in the outside walls in rooms
containing LPG cylinders should therefore be at floor level,
in order to allow any gas from leaks to be expelled. Do not
store LPG cylinders (even when empty) in basements/
rooms below ground level; it is advisable to keep only the
cylinder in use in the room at any one time and connected
far from heat sources which could raise its temperature to
above 50°C.
The following instructions are provided for qualified installers
so that they may accomplish installation, adjustment and
technical maintenance operations correctly and in compliance
with current regulations and standards.
Important: the hob should be disconnected from the
mains electricity supply before any adjustment,
maintenance, etc. is carried out. Maximum caution should
be used whenever it is necessary to keep the appliance
connected to the electricity supply.
The hobs have the following technical characteristics:
-Category II 2H3+ -Class 1
Positioning
This appliance may only be installed and operated in
permanently ventilated rooms in compliance with provisions
laid down by current regulations and standards. The following
requirements must be observed:
• The appliance must discharge combustion products into a
special hood, which must be connected to a chimney, flue
pipe or directly to the outside (fig.1).
• If it is impossible to fit a hood, the use of an electric fan is
permitted, either installed on a window or on an external
wall, which must be switched on at the same time as the
appliance.
In a chimney stack or branched flue
Directly to the outside
(exclusively for cooking appliances)
Kitchen ventilation
The air flow into the room where the appliance is installed
must equal the quantity of air that is required for regular
combustion of the gas and for ventilating the same room.
Air must be taken in naturally through permanent apertures
made in the outside walls of the room or through single or
branching collective ventilation ducts in compliance with the
standards in force.
