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3.7
Gas conversion
models can be converted from operation with G20 to
OF
operation with G30/G31 by installing the "Nozzle kit for G30/G31
- code 5144722 to be ordered separately from the boiler.
m
CAUTION
The maintenance interventions described must ONLY
be carried out the professionally qualified personnel.
a
WARNING
Before carrying out any interventions described:
– set the main system switch to "OFF"
– close the gas valve
– make sure that no hot parts inside the appliance are
touched.
OFF
3.7.1
Preliminary operations
To carry out the conversion:
– remove the screws (1), pull the front panel (2) forwards and
release it from the top by lifting it
2
Fig. 33
1
Fig. 34
– remove the four screws (3) and remove the front panel (4)
from the combustion chamber working carefully so as not to
damage the gasket or the panel insulation
– remove the screw (5) and extract the electrode (6)
– remove the swivel joint (7) and the counter-nut (8)
– remove the screws (9)
– remove the gas manifold (10), replace the nozzles fitted in the
factory with the nozzles supplied with the accessory kit and
position the gaskets
– refit the gas manifold (10) securing it with the screws (9)
– tighten the counter-nut (8) and the swivel joint (7) and position
the gasket
– refit the electrode (6) putting its end IN THE MIDDLE of the
burner element (*)
– check that the gasket and the insulation of the front panel (4)
of the combustion chamber are integral. If this is not the case
then replace it
– refit the panel (4) secure it with fastening screws
m
CAUTION (*)
The position of the electrode is essential for the correct
detection of current ionization.
– apply the label indicating the new gas configuration on the
technical data plate (11) on the inside of the front panel
– carry out the "Automatic calibration procedure" and then
refit the front panel (2) securing it with the two screws (1).
2
14
1
Fig. 35
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