Bosch NET 682 C - Manual (Page 12)

Instructions for the installer
27
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
Average rapid (3) 2.55 115 750
Large rapid (4) 3.1 126 800
Triple crown (5) 3.9 140 1400
Triple crown (6) 3.3 130 1400
internal (7) 0.8 67 380 Double crown
external (7) 3.3 130 900
5.4 Regulation of primary air
Referred to distance “X” in mm.
BURNER
G20
20 mbar
G30/G31
28/37 mbar
Auxiliary (1) 1.5 1
Semi-rapid (2) 1.5 1.5
Average rapid (3) 1 1.5
Large rapid (4) 1.5 2.5
Triple crown (5) 2 3.5
Triple crown (6) 1 2.5
internal (7) 0.5 1.5 Double crown
external (7) 1 4