Smeg PGA32G Manual page 22

Installation with the flexible hose must be carried out so that the length of the
piping does not exceed 2 metres fully extended; make sure that the hoses do
not come into contact with moving parts and that they are not crushed in any
way.
6.6 Connection to liquid gas
Use a pressure regulator and make the connection on the gas cylinder following
the guidelines established by the regulations in force. Make sure that the feed
pressure complies with the values indicated in the table at point "9.2 Burner and
nozzle characteristics table".
6.7 Room ventilation
Caution – This hob may only be installed and operated in rooms permanently
ventilated in accordance with current regulations. For proper operation of a gas
appliance it is essential for the air necessary for combustion of the gas to be
able to flow naturally into the room. Air must flow directly into the room through
openings in its outside walls. This (these) opening (s) must have a free passage
cross-section of at least 100 cm2, or 200 cm2 for appliances not equipped with
gas safety device. These openings must be constructed so that they cannot be
obstructed indoors or outdoors, and should preferably be close to the floor on
the side opposite to the combustion gas discharge point. If it is not possible to
make the openings in the room where the cooker is installed, the necessary air
may be taken from an adjoining room, proveded it is not a bedroom or a room
with fire risk.
6.8 Combustion gas discharge
Combustion gases may be discharged by means of hoods connected to a flue
with reliable natural draught, or a fan extraction system. An effective extraction
system requires careful design by an authorised specialist, and must comply
with the regulation distances and positions. After installation, the engineer must
issue a certificate of compliance.
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Instructions for the installer