Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition - Riello RS 68/EV O2 ULX Installation, Use And Maintenance Instructions

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 prior to ignition

Combustion head adjustment has already been described in the
section "Combustion head adjustment" on page 24.
In addition, the following adjustments must also be made:
 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 switch (Fig. 36 on
page 38) to the start of the scale.
 Adjust the maximum gas pressure switch (Fig. 35 on
page 38) to the end of the scale.
 Adjust the air pressure switch (Fig. 34 on page 36) to the
start of the scale.
 Adjust the pressure switch for the valve leak detection con-
trol device (PVP Kit)(Fig. 37 on page 38), if present, accord-
ing 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. 32) 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.
An excessive gas pressure can damage the com-
ponents of the gas train and lead to a risk of explo-
sion.
Start-up, calibration and operation of the burner
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
Before igniting the burner, see the paragraph
"Safety test - with gas feeding closed" on
page 41
WARNING
 Bleed the air from the piping of the gas train, connecting a
plastic tube to the pressure test point 1)(Fig. 26) 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 at which voltage is supplied.
This operation is unnecessary if each of the two solenoids is
equipped with an indicator light that signals voltage passing
through.
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 deliv-
ery at the minimum.
CAUTION
33 GB
20209360
1
Fig. 32
20205796