Unigas HRX515, Manual Of Installation - Use - Maintenance

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PART IV: MAINTENANCE
42
9.5 Adjusting the combustion head
Burner is factory-set according to its combustion head model.
z
the combustion head is factory-set according to the values mentioned below.
There are six nozzles: two are in touch with the diffuser and are diametrically opposite, four are placed at 10mm from the diffuser edge
(see picture above). Nozzles are factory set in order that the two attached to the diffuser lean out 52mm from the diffuser edge, the
other four lean out 72mm.
Attention! If it is necessary to change the head position, repeat the air and gas adjustments described at staps
1-9 in paragraph related to air/fuel ratio adjustments according to the actuator model.
Attention :before adjusting the combustion head, turn the burner off and wait until it gets cold. When changing
the nozzles position, pay attention that the smallest holes are always directed inwards, otherwise rotate the noz-
zle as to adjust them. Remeber to fasten V1 and V2 srews.
n. 2 tangential
nozzles (1,3)
n.4 nozzles
@10mm (1,2,4,5)
6,3 nozzle position
1,2,4,5 nozzles position
6
3
1
2
4
5
15
A = 28
B = 8
C= 45
D= 25