Smeg SE97CXG - Manual (Page 11)

Instructions for the installer
30
5.3 Regulation for natural gas
The hob has been inspected for G20 (2H) natural gas at a pressure of
20 mbar. To allow the unit to work with this type of gas, perform the same
operations described in paragraph “5.2 Regulation for LPG”, but choose
the nozzles and regulate the primary air for natural gas, as shown in the
following table and in paragraph "5.4 Regulation of primary air”. After the
regulations have been carried out, restore the seals with sealing wax or
equivalent material.
Burner
Rated
heating
capacity
(kW)
Natural gas – G20 20 mbar
Nozzle diameter
1/100 mm
Reduced flowrate
(W)
Auxiliary (1) 1.05 73 380
Semi-rapid (2) 1.65 92 380
Rapid (3) 3.1 126 750
internal (5) 1.05 73 380 Double crown
external (5) 3.9 132 1200
5.4 Regulation of primary air
Referred to distance “X” in mm.
To identify the burners on your hob, refer to the drawings in point “6.3
Arrangement of burners on hob “
BURNER
G20
20 mbar
G30/G31
28/37 mbar
Auxiliary (1) 1.5 2.0
Semi-rapid (2) 2.0 2.0
Rapid (3) 2.5 9.0
internal (5) 4.5 6.0 Double crown
external (5) 3.0 10.0