PART I: INSTALLATION MANUAL
11
AIR RATE SETTING
ADJUSTING THE COMBUSTION HEAD
The burner is set in the factory with the combustion head in the "MAX." position, corresponding to the maximum output. To ope-
rate the burner at a lowest output, drive the combustion head back towards the "MIN.” position, rotating the screw VRT
clockwise.
G18 SP
Fig. 15
PG25 SP - PG30 TN
Fig. 16
G18 SP
Loose the screw VBS and rotate the air damper in the desired
position, to set the air flow.
At the end of settings, tight the screw VBS.
Fig. 13
PG25 SP - PG30 TN
Loose the screw VBS and set the air flow, working directly on
the air damper.
At the end of settings, tight the screw VBS.
Fig. 14
VBS
VBS
VRT
Summary of Contents for G18 SP
Page 18: ...PART III MAINTENANCE MANUAL 18 SPARE PARTS Burner G18 SP...
Page 20: ...PART III MAINTENANCE MANUAL 20 Burners PG25 SP PG30 TN...
Page 29: ...APPENDICX COMPONENTS CHARACTERISTICS 29...
Page 30: ...APPENDICX COMPONENTS CHARACTERISTICS 30...
Page 31: ...APPENDICX COMPONENTS CHARACTERISTICS 31...
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