Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition (Light Oil); Nozzle - Riello RLS 68/E MX Installation, Use And Maintenance Instructions

6

Start-up, calibration and operation of the burner

6.1

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 WARNING
6.2

Adjustments prior to ignition (light oil)

It is recommended to adjust first the light oil burner
and then the gas burner.
Carry out the fuel change with burner off.
WARNING WARNING
The 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 23.
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. 38) 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.
Excessive gas pressure can damage the com-
ponents of the gas train and lead to a risk of
explosion.
DANGER
 Bleed the air from the piping of the gas train, connecting a
plastic tube to the pressure test point 1)(Fig. 38) 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.
20121288
Start-up, calibration and operation of the burner
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING WARNING
Refer to paragraph "Safety test - with gas ball
valve closed" on page 54 before the first start-
up.
WARNING WARNING
6.2.2

Combustion head

The adjustment of the combustion head already carried out on
page 25 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. 30
on page 28).
6.2.4

Fan damper

For the initial ignition, leave the factory setting for the 1st and 2nd
stages.
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.
WARNING WARNING
20126841
32 GB
1
Fig. 38