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CHOOSING SUITABLE
SURROUNDINGS
The room where the gas appliance is to
be installed must have a natural flow of
air so that the gas can burn (in compli-
ance with the current laws in force).
The flow of air must come directly from
one or more openings made in the out-
side walls with a free area of at least 100
2
cm
.
If the appliance does not have a no-
flame safety device this opening must
have an area of at least 200 cm
The openings should be near the floor
and preferably on the side opposite the
exhaust for combustion products and
must be so made that they cannot be
blocked from either the outside or the
outside.
When these openings cannot be made,
the necessary air can come from an
adjacent room which is ventilated as
required, as long as it is not a bedroom
or a danger area (in compliance with the
current laws in force).
In this case, the kitchen door must allow
the passage of the air.
Extractor hood
for products of
combustion
Fig. 4.6
18
2
Air vent
This appliance is not connected to a
device to evacuate the combustion
products. This must be installed and
connected in conformity with the
installation rules in force. Pay special
care to room ventilation as well.
DISCHARGING PRODUCTS OF COM-
BUSTION
Extractor hoods connected directly to
the outside must be provided, to allow
.
the products of combustion of the gas
appliance to be discharged (fig. 4.6).
If this is not possible, an electric fan may
be used, attached to the external wall or
the window; the fan should have a
capacity to circulate air at an hourly rate
of 3-5 times the total volume of the
kitchen (fig. 4.7).
The fan can only be installed if the room
has suitable vents to allow air to enter,
as described under the heading
"Choosing suitable surroundings".
Electric fan to
extract products
of combustion
Fig. 4.7
Air vent
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