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START-UP
Adjusting the maximum oil flow rate
Put the selector on the maximum operation. Adjust the oil pressure reading the value on the return manometer / pressure gauge
according to the nozzle tables provided in the appendix.
NOTE: the pump pressure is set from the factory at the pressure required nozzle pressure required as per table of nozzle selection in
appendix. If the output required is different from the one set from the factory the pressure can be adjusted according to the instruction
below.
Servomotor SQM50 - Air damper motor pre-setting
The cams of the servomotor are set from the factory in order to start the burner and
reach the maximum output.
The following setting are the standard one:
I. High flame position 90° (maximum value 70°).
II. Air flap position in standby 0° (minimum value 0°).
III. Ignition position 15°.
IV. Low flame position 40° (can be modified depending on the minimum output of the boiler).
V. To VIII not used
Adjusting the pump pressure
1 - INLET
2 - RETURN
3 - BLEED AND PRESSURE GAUGE PORT
4 - INLET GAUGE PORT
5 - PRESSURE ADJUSTMENT
6 - TO NOZZLE
The pump pressure is set at a value of 22-25 bar during the testing of burners.
Before starting the burner, bleed the air in the pump through the gauge port.
Fill the piping with heavy oil to facilitate the pump priming. Start the burner and check the pump feeding pressure.
In case the pump priming does not take place during the first pre-purging, with a consequent,
subsequent lock-out of the burner, rearm the burner's lock-out to restart, by pushing the button on the control box.
If, after a successful pump priming, the burner locks-out after the prepurging,
due to a fuel pressure drop in the pump, rearm the burner's lock-out to restart the burner.
Do never allow the pump working without oil for more than three minutes.
NOTE: before starting the burner, check that the return pipe is open. An eventual obstruction could damage the pump sealing device.
20
SUNTEC TA....
4
1
5
2
420010466301
Cam VIII
is never used
3
6
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