Table of Contents
Advertisement
5
Start-up, calibration and operation of the burner
5.1
Notes on safety for the first start-up
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
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 24.
5.2.2
Combustion head
The adjustment of the combustion head is via the calibration points
of the servomotor inside of the curve combustion.
The setting of the combustion head depends exclusively on the
maximum delivery of the burner. In case of high altitude site, head
5.3
Fuel change
There are two possible options for changing fuel:
1
using switch 2)(Fig. 48);
2
using a remote selector connected to the main terminal board.
5.4
Adjustments before first firing (gas operation)
In addition, the following adjustments must also be made:
open manual valves up-line from the gas train.
Adjust the minimum gas pressure switch (Fig. 51) to the start
of the scale.
Adjust the maximum gas pressure switch (Fig. 50) to the end
of the scale.
Adjust the air pressure switch (Fig. 49) to the start of the scale.
Purge the air from the gas line.
Continue to purge the air (we recommend using a plastic tube
routed outside the building) until gas is smelt.
Fit a U-type manometer (Fig. 46) to the gas pressure test point
on the sleeve. The manometer readings are used to calculate
MAX. burner power.
Connect two lamps or testers to the two gas line solenoid
valves to check the exact moment at which voltage is sup-
plied. This operation is unnecessary if each of the two sole-
noid valves is equipped with a pilot light that signals voltage
passing through.
20142253
Start-up, calibration and operation of the burner
38
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 43 before the first start-
up.
WARNING
setting must refer to the "Procedure to refer burner operating
condition at an altitude and/or at a combustion supporter air
temperature different to the standard values (328 ft above sea
level, 68 °F)." on page 9.
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 possible only if the surrounding temperature re-
mains above 0 °C.
By setting switch 1)(Fig. 48), to "remote" you activate the remote
fuel selection facility.
In this position, if no remote selector is fitted, the display shows the
priority fuel.
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.
CAUTION
GB
20159410
Fig. 46
Advertisement
Table of Contents
