Riello RLS 120/E FGR, Installation, Use And Maintenance Instructions

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31 20168262 GB
Start-up, calibration and operation of the burner
6.1 Notes on safety for the first start-up
6.2 Adjustments prior to ignition (light oil)
Optimum calibration of the burner requires an analysis of the flue
gases at the boiler outlet and interventions on the following
points.
6.2.1 Nozzle
See information in paragraph “ Nozzle ” on page 21.
6.2.2 Combustion head
The adjustment of the combustion head already carried out on
page 22 does not require any modifications unless the burner
output is changed.
6.2.3 Pump pressure
In order to change the pump pressure, use the screw 5)(Fig. 31
on page 27).
6.2.4 Fan damper
For the initial ignition, leave the factory setting for the 1st and 2nd
stages.
6.3 Operations before start-up (gas)

Ensure that the gas supply company has carried out the
supply line vent operations, eliminating air or inert gases
from the piping.

Slowly open the manual valves situated upstream from the
gas train.

Adjust the minimum gas pressure switch to the start of the
scale.

Adjust the maximum gas pressure switch to the end of the
scale.

Adjust the air pressure switch to the start of the scale.

Adjust the pressure switch for the valve leak detection con-
trol device (PVP kit), if present, according to the instructions
supplied with the kit itself.

Check the gas supply pressure by connecting a pressure
gauge to the pressure test point 1)(Fig. 40) of the minimum
gas pressure switch: it must be lower than the maximum
allowed pressure of the gas train, as shown on the charac-
teristics label.

Bleed the air from the piping of the gas train, connecting a
plastic tube to the pressure test point 1)(Fig. 40) of the mini-
mum gas pressure switch.
Take the vent tube outside the building so you can notice the
smell of gas.

Connect two lamps or testers to the two gas line solenoids to
check the exact moment in which voltage is supplied.
This operation is unnecessary if each of the two solenoid
valves is equipped with a pilot light that signals voltage pass-
ing through.
6 Start-up, calibration and operation of the burner
WARNING 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 WARNING
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING WARNING
Before igniting the burner, see the paragraph
“Safety test - with gas feeding closed” on
page 37.
WARNING WARNING
It is recommended to adjust first the light oil burner
and then the gas burner.
Carry out the fuel change with burner off.
DANGER
Excessive gas pressure can damage the com-
ponents of the gas train and lead to a risk of
explosion.
WARNING WARNING
Before starting up the burner, it is good prac-
tice to adjust the gas train so that ignition
takes place in conditions of maximum safety,
i.e. with gas delivery at the minimum.
1
Fig. 40
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