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Ventilation requirements
The appliance must be installed in compliance with applicable local
regulations concerning ventilation and the evacuation of exhaust gases.
Intensive and prolonged use may require extra ventilation, e.g. opening
a window, or more efficient ventilation increasing the mechanical
suction power if this is fitted.
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 compliance with applicable
local regulations). The flow of air must come directly from one or more
openings made in the outside walls with a free area of at least 100 cm
(or refer to applicable local regulations).
The openings should be near the floor and preferably on the side opposite
the exhaust for combustion products and must be made so that they
cannot be blocked from either the inside 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 bed
room or a danger area (in compliance with applicable local regulations).
In this case, the kitchen door must allow the passage of the air.
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. 1.9).
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. 1.10).
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".
Extractor hood
for products of
combustion
Air vent
Fig. 1.9
Electric fan to
extract products
of combustion
Air vent
Fig. 1.10
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