Instructions for the installer
21
9.3 Adjustment for natural gas
The cooker hob is preset for natural gas G20 (2H) - G20/G25 (2E+)
at a pressure of 20 mbar - 20/25 mbar . To reset the appliance
for operation with this type of gas, carry out the same steps as described in “9.2
Adjustment for LPG”, but select the nozzles and adjust the primary air for natural
gas as indicated in the table below and in "9.4 Primary air adjustment”.
After the adjustments have been carried out, restore the seals with sealing wax
or equivalent material.
Burner
Rated
heating
capacity
(kW)
Natural gas – G20/G25 20/25 mbar
G20 20 mbar
Nozzle diameter
1/100 mm
Reduced capacity
(W)
Auxiliary (1) 1.05 73 380
Semi-rapid (2) 1.65 92 380
Rapid (3) 2.55 115 650
Rapid (4) 3.1 126 750
Ultra-rapid (5) 3.9 140 1400
9.4 Primary air adjustment
Refers to distance “X” in mm.
BURNER
G20/G25 20/25 mbar
G20 20 mbar
G30/G31
50 mbar
G30/G31
28/37 mbar
Auxiliary (1) 2.0 1.5 2.0
Semi-rapid (2) 1.5 1.0 1.5
Rapid (3) 5.0 1.5 5.0
Rapid (4) 2.5 1.5 10.0
Ultra-rapid (5) 2.0 3.5 4.0
To identify the burners on your hob, refer to the drawings in “9.6 Arrangement of the burners on the
cooking hob”.