Start-up, calibration and operation of the burner
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5.1 Notes on safety for the first start-up
5.2 Adjustments before first firing (light oil operation)
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 Nozzles
See the information listed on page 26.
5.2.2 Combustion head
The adjustment of the combustion head already carried out
(page 28) need not be altered unless the 2nd stage delivery of the
burner is changed.
The setting of the combustion head depends exclusively on the
maximum delivery of the burner. In case of high altitude site, head
setting must refer to the “corrected capacity” according precedure
described at page 14.
5.2.3 Pump pressure
300 psi: this is the pressure calibrated in the factory which is usu-
ally sufficient for most purposes. Sometimes, this pressure must be
adjusted to:
• 145 psi in order to reduce fuel delivery. This adjustment is pos-
sible only if the surrounding temperature remains above 0 °C;
• In order to adjust pump pressure, use the screw 5)(Fig. 26).
5.2.4 Fan air gate valve
See adjustments at page 41.
5.3 Burner firing
Having completed the checks indicated in the previous heading,
the ignition pilot of the burner should fire.
Set switch 1)(Fig. 42) to "LOCAL".
Set switch 2)(Fig. 42) to "GAS".
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 page 25.
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 Fuel change
There are two possible options for changing fuel:
1 using switch 2)(Fig. 42);
2 using a remote selector connected to the main terminal board.
By setting switch 1)(Fig. 42), to “remote” you activate the remote
fuel selection facility.
In this position, if no remote selector is fitted, the display shows the
priority fuel.
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.
OFF
REMO T E
LOCAL
OFF
OIL GAS
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