16
INSTALLATION ROOM
The room where the gas appliance is to
be installed must have a natural flow of
air so that the gas can burn.
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
cm
2
.
If the appliance does not have a no-
flame safety device this opening must
have an area of at least 200 cm
2
.
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 dangerous area.
In this case the kitchen door must allow
the passage of the air.
H min 650
mm
Fig. 16
Fig. 17
Air vent
Air vent
Electric fan to
extract products
of combustion
Extractor hood
for products of
combustion
DISCHARGING PRODUCTS OF
COMBUSTION
Extractor hoods connected directly to
the outside must be provided, to allow
the products of combustion of the gas
appliance to be discharged (fig. 16).
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. 17).
The fan can only be installed if the
room has suitable vents to allow air to
enter, as described under the heading
“Installation room”.