Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition; Burner Start-Up - Riello RS 34/E MZ 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
6.2

Adjustments prior to ignition

The adjustments to be carried out are:
 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. 34 at
page 33) to the start of the scale.
 Adjust the air pressure switch (Fig. 33 at page 33) to the start
of the scale.
 Adjust the pressure switch for the valve leak detection control
device (PVP kit)(Fig. 35 at page 33), 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. 31) 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.
6.3

Burner start-up

Feed electricity to the burner via the disconnecting switch on the
boiler panel.
Close the thermostats/pressure switches and turn the switch of
Fig. 32 to position "1".
Start-up, calibration and operation of the burner
D7999
Check the correct working of the adjustment, com-
mand and safety devices.
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
Make sure that the lamps or testers connected to
the solenoids, or indicator lights on the solenoids
themselves, show that no voltage is present.
DANGER
If voltage is present, stop the burner immediately
and check the electrical wiring
31 GB
1
Fig. 31
20068131