In a chimney stack or branched flue.
(exclusively for cooking appliances)
b) The room must be allowed for the influx of the air which is for proper combustion. The air flow for
combustion purposes must not less than 2 m³ /h per kW of installed capacity. The air supply will be
effected by influx from the outside through a duct, its inner cross section is at least 100cm² and must not
be blocked accidentally.
The gas hob without safety devices, to prevent flame go out accidentally, must have a ventilation
working on twice volume. For example, a minimum of 200 cm² (Fig. 3). Otherwise, the room can be
vented indirectly through adjacent rooms which is fitted with ventilation ducts to the outside. Although
the adjacent rooms are not shared areas, bedrooms, but fire risk is hidden (Fig. 4).
Adjacent Room
Examples of ventilation holes for comburent air.
Fig.3
c) Intensive and prolonged working of the gas hob that needs to intensify ventilation, e.g. opening
windows or increasing the power of the air intake system (if present).
d) Liquefied petroleum gases are heavier than air, so settle it downward. Rooms in which LPG tanks are
installed must be fitted with ventilation to the outside to avoid of gas leakage.
Therefore, LPG tanks which are empty or partially full, must not be installed or stored in rooms or spaces
below ground level (cellars etc.). It is a good idea to keep only the tank which is working currently in the
room, and make sure that it is not closed to heating source (ovens, fireplaces, stoves, etc.).
Installation of built-in gas hob
The gas hobs are designed with protection degree against excessive heating, the appliance can be
installed next to cabinets, and the height should not exceed the hob.
For a correct installation, the following precautions must be followed:
a) The hob may be located in a kitchen, a diner or bed/ sitting room, but not in a bathroom or shower room.
b) The furniture standing near to the unit, it is higher than the working boards, it must be placed at least
110mm distance to the edge of the board.
c) The cabinets should be positioned near to the hood at a height of 420 mm at least (Fig. 5).
Directly to the Outside
Room to be Vented
Enlarging the ventilation slot between window and floor
Fig.4
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