PART III: OPERATION
39
6.11 Center head holes gas flow regulation (natural gas burners)
To adjust the gas flow, partially close the holes, as follows:
1
loosen the three
V
screws that fix the adjusting plate
D
;
2
insert a screwdriver on the adjusting plate notches and let it move CW/CCW as to open/close the holes;
3
once the adjustmet is performed, fasten the
V
screws.
The adjusting plate correct position must be regulated in the plant during the commissioning.
The factory setting depends on the type of fuel for which the burner is designed:
z
For natural gas burners, plate holes are fully opened
6.12 Center head holes gas flow regulation (LPG burners)
To adjust the gas flow, partially close the holes, as follows:
1
loosen the three
V
screws that fix the adjusting plate
D
;
2
insert a screwdriver on the adjusting plate notches and let it move CW/CCW as to open/close the holes;
3
once the adjustmet is performed, fasten the
V
screws.
The adjusting plate correct position must be regulated in the plant during the commissioning.
The factory setting depends on the type of fuel for which the burner is designed:
z
For LPG burners, plate holes are opened about 1.5mm (9x series) or 1.3 (5xx series)
V
D
closed holes
opened holes
V
D
closed holes
opened holes
Summary of Contents for HR91A
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