Start-up, calibration and operation of the burner
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20096088
GB
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
Combustion head setting
The setting of the combustion head depends exclusively on the
maximum delivery of the burner. Refer to page 21.
5.2.2
Pump adjustment
No settings are required for the pump, which is set to 360 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.
5.2.3
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. 13, page 18.
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
Adjustments before first firing (gas operation)
Ensure that the gas supply company has carried out the sup-
ply line vent operations, eliminating air or inert gases from the
piping.
Slowly open the manual valves situated upstream of the gas
train.
Adjust the minimum gas pressure (Fig. 47, page 34) switch to
the start of the scale.
Adjust the maximum gas pressure switch (Fig. 46, page 33) to
the end of the scale.
Adjust the air pressure switch (Fig. 44, page 33) to the start of
the scale.
Purge the air from the gas line.
Fit a U-type manometer (Fig. 42) to the gas pressure test point
on the sleeve. The manometer readings are used to calculate
the MAX. burner power using the diagram on page 25.
5
Start-up, calibration and operation of the burner
WARNING
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.
WARNING
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
Refer to paragraph “Safety test - with gas ball
valve closed” on page 37 before the first start-
up.
WARNING
Before starting up the burner it is good practice to
adjust the gas train so that ignition takes place in
conditions of maximum safety, i.e. with gas delivery
at the minimum.
Fig. 42
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