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0006160053_201802
IONIZATION CURRENT
The maximum ionisation current value required for a correct operation
of the equipment is indicated in the wiring diagram.
The burner provides a significantly higher current and therefore does
not normally require any checks at all.
Should, however, the ionisation current be measured, a microammeter
must be connected in series to the ionisation electrode lead by
opening the connector “C” as illustrated in the figure.
AIR REGULATION ON THE COMBUSTION HEAD
The combustion head has a regulation device that allows the air
passage between the disc and the combustion head to be opened or
closed. Closing the passage, you can obtain high pressure upstream
of the disc even at low flow rate. The high speed and turbulence of
the air provides for its greater penetration into the fuel and therefore
an excellent mixture and flame stability. High air pressure upstream
of the disc may be necessary to prevent flame fluctuations, this is
particularly essential when the burner works on the combustion
chamber that is pressurised and/or at a high thermal load.
The device closing the air on the combustion head must be set to
such position as to always obtain, behind the disc, a very high air
pressure value. When the burner works at its maximum output,
regulate the air closure on the combustion head in such a way that
there is a generous opening of the air shutter regulating the air flow.
Therefore start the regulation with the device that closes the air on the
combustion head in an intermediate position, igniting the burner for an
indicative regulation as explained above. Move the combustion head
forward or backward to obtain an air flow adequate for the output.
As the maximum required output is achieved, adjust the position
of the device that closes the air on the combustion head, moving it
forward or backward to obtain a flow of air suitable for the output,
with
the air regulation damper intake considerably open.
CAUTION / WARNING
Check that ignition takes place regularly, using the disc - head
adjustment screw gradually until you reach a position in which
ignition occurs regularly. For the first stage, limit the quantity of
air to that which is strictly necessary for safe ignition, even in
the most difficult circumstances.
1
2
3
0002939070
1 -Pressure plug P3
2 - Mixing disk position mark
3 - Damper mark
INDICATIVE POWER ADJUSTMENT VALUES
Power kW
Air shutter
position
Mixer disc
position
Methane
pressure P3
mbar
LPG
pressure P3
mbar
35
2
2
1.8
1.5
55
3
3
2.2
1.8
75
4,5
4.5
2.9
2.2
95
6
6
4.3
3.2
115
9
9
5.5
1.3
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