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RX515
The smallest holes (pilot holes) are directed towards the flame axis while the biggest ones (main holes) are directed outwards. As for a
finest adjustment in the plant, please contact the Technical service.
The nozzles can be adjusted as follows:
- back and forth adjustment, by means of V1 screws
- up and down adjustment, by means of V2 screws
Calibration of air and gas pressure switches
The air pressure switch locks the control box if the air pressure is not the one requested. If it
happens, unlock the burner by means of the control box unlock pushbutton, placed on the
burner control panel.
The gas pressure switches check the pressure to avoid the burner operate when the pres-
sure value is not in the requested pressure range.
Calibration of air pressure switch
To calibrate the air pressure switch, proceed as follows:
Remove the transparent plastic cap.
Once air and gas setting have been accomplished, startup the burner.
During the pre-purge phase o the operation, turn slowly the adjusting ring nut VR in the clockwise direction (as to increase the adju-
sting pressure) until the burner lockout, then read the value on the pressure switch scale and set it to a value reduced by 15%.
Repeat the ignition cycle of the burner and check it runs properly.
Refit the transparent plastic cover on the pressure switch.
attached
V2
V1
37
attached
RX520
VR
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