Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Adjustments Prior To Ignition - Riello RS 70 VA Installation, Use And Maintenance Instructions

(A)
(B)
(C)
1
(D)
(E)
START-UP, CALIBRATION AND OPERA-
TION OF THE BURNER
NOTES ON SAFETY FOR THE FIRST START-
UP
WARNING
D3855

ADJUSTMENTS PRIOR TO IGNITION

• Ensure that the gas supply company has car-
ried out the supply line vent operations, elimi-
nating air or inert gases from the piping.
• Slowly open the manual valves situated
upstream of the gas train.
• Adjust the minimum gas pressure switch (A)
to the start of the scale.
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• Adjust the maximum gas pressure switch (B)
to the end of the scale.
• Adjust the air pressure switch (C) to the start
of the scale.
• Check the gas supply pressure by connecting
a pressure gauge to the pressure test point
(E) of the minimum gas pressure switch: it
must be lower than the maximum allowed
pressure of the gas train, as shown on the
characteristics label.
CAUTION
• Bleed the air from the piping of the gas train,
connecting a plastic tube to the pressure test
point 1) (D) of the minimum gas pressure
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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 passing through.
WARNING
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14
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
regulations of the laws in force.
Check the correct working of the
adjustment, command and safety
devices.
Refer to paragraph "Safety test -
with gas ball valve closed" on
page 22 before the first start-up.
Excessive gas pressure can damage
the components of the gas train and
lead to a risk of explosion.
Before starting 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.