Start-up, calibration and operation of the burner
33
20095042
5.1 Notes on safety for the first start-up
5.2 Adjustments prior to ignition (light oil)
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points.
5.2.1 Combustion head setting
The setting of the combustion head depends exclusively on the
maximum delivery of the burner.
See information on page 21.
In case of high altitude site, head setting must refer to the “correct-
ed capacity” according precedure described at page 9.
5.2.2 Nozzle
See information on page 22.
5.2.3 Pump adjustment
No settings are required for the pump, which is set to 290 PSI by
the manufacturer. This pressure must be checked and adjusted (if
required) after the burner has been ignited.
The only operation required in this phase is the application of a
pressure gauge on the appropriate pump attachment.
5.2.4 Air damper adjustment
The first time the burner is fired leave the factory setting unchanged
for both low and high fire operation.
5.3 Burner firing
Having completed the checks indicated in the previous heading,
the pilot of the burner should fire.
If the motor starts but the flame does not appear and the flame
safeguard goes into lock-out, reset and wait for a new firing at-
tempt.
Pilot adjustment has been illustrated on Fig. 22, page 24.
Having adjusted the pilot, reconnect the main valve and ignite the
main flame; it might require several attempts to purge the air from
the gas lines or to adjust the valve with little gas.
Once the burner has fired, now proceed with calibration operations.
5.4 Burner calibration
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet.
Adjust successively:
➤
Firing output
➤
Maximum burner output
➤
Minimum burner output
➤
Intermediate outputs between low and high fire
➤
Air pressure switch
➤
Minimum gas pressure switch
5 Start-up, calibration and operation of the burner
The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
Check the correct working of the adjustment, com-
mand and safety devices.
It is recommended to adjust first the light oil burner
and then the gas burner.
Carry out the fuel change with burner off.
To Next Page
Loading...
