Version 1.3
Page 11 of 20
13.01.2016
7.1
Adjustment of the burner nozzle
The nozzles are marked with the relative diameter (punching). Please check the table for the correct
nozzle for every single burner. The nozzle is mounted in the smaller part of the venturi tube made of
aluminium, at the end of the flexible connection tube, in a nozzle holder. Remove the lateral stud screws
and pull out the nozzle holder. Remove the nozzle and replace it with the new, correct nozzle. Make sure
to tighten the nozzle. Insert the nozzle holder and check the primary air distance. Then close the stud
screws. The following table shows the nozzle diameter and primary air distance:
Nozzle
burner C
Distance A
Nozzle
burner D
Distance A
Nozzle
burner E
Distance A
Natural gas H, E, E+
(G20)
20 mbar: 135
25 mbar: 130
5,5 mm
20 mbar: 165
25 mbar: 155
6 mm
20 mbar: 200
25 mbar: 190
7 mm
Natural gas L, LL (G25) 25 mbar: 140
5,5 mm
25 mbar: 170
6 mm
25 mbar: 210
7 mm
Propane G30/G31
50 mbar: 80
6,5 mm
50 mbar: 95
7 mm
50 mbar: 115
Max.
available
Propane G30/G31
28/30 30/37
mbar: 90
6,5 mm
28/30 30/37
mbar: 110
7 mm
28/30 30/37
mbar: 135
Max.
available
Should you change the OEM-installed nozzle, please state the substitution with gas type below and also
mark it on the technical data plate.
follows
