Unigas P75R, Manual Of Installation - Use - Maintenance

Page: 41 / 135

PART III: OPERATION
41
(R75A M-..) Center head holes gas flow regulation
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:

For natural gas burners, plate holes are fully opened
(R75A L-..) Center head holes gas flow regulation
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:

For LPG burners, plate holes are opened about 1.7mm
V
D
closed holes
opened holes
V
D
closed holes
opened holes