PART III: OPERATION
34
5.6
Adjusting the combustion head
R75A
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.
Fig. 23
RX75 - RX75R
The burner is factory-set with the head in its "all-ahead" position, as for the minimum output. To operate at a higher power,slightly move
the combustion head backwards, turning clockwise the screw
VRT
. .
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 gas adjustments described above.
VRT
ID
VRT
“all-ahead” position
“all-backwards” head position
Summary of Contents for R75A
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