Adjustment Of The Burner Nozzle - Berner BHG2S70 Instructions For Installation And Use Manual

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:
Natural gas H, E, E+
(G20)
Natural gas L, LL (G25)
Propane G30/G31
Propane G30/G31
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
Version 1.3
Nozzle
Distance A
burner C
20 mbar: 135
5,5 mm
25 mbar: 130
25 mbar: 140 5,5 mm
50 mbar: 80 6,5 mm
28/30 30/37
6,5 mm
mbar: 90
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Nozzle
Distance A
burner D
20 mbar: 165
6 mm
25 mbar: 155
25 mbar: 170 6 mm
50 mbar: 95 7 mm
28/30 30/37
7 mm
mbar: 110
Nozzle
Distance A
burner E
20 mbar: 200
7 mm
25 mbar: 190
25 mbar: 210 7 mm
Max.
50 mbar: 115
available
28/30 30/37 Max.
mbar: 135 available
13.01.2016