PART III: OPERATION
34
Adjusting the combustion head
The burner is factory-adjusted with the combustion head in the "MAX" position, accordingly to the maximum power. To operate the bur-
ner at a lower power, progressively shift back the combustion head, towards the "MIN" position, screwing the screw VRT. The ID index
shows how much the combustion head moved.
CAUTION: perform these adjustments once the burner is turned off and cooled.
Attention! if it is necessary to change the head position, repeat the air and fuel adjustments described above.
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