38
– unscrew the swivel joint (8)
– remove the clip (9)
– unscrew the two front screws (10)
– replace the nozzle assembly (11) with the one in the kit, fixing
it in place with screws (10)
– replace the 3/4” gasket (12) on the gas valve with the new
gasket supplied
– refit the components in reverse order and fix in place as
appropriate
8
11 10
9
10
12
Fig. 47
– bring the control panel (4) to the original position and secure
it with the screws (3) which were removed previously.
m
CAUTION
If the gas supply is changed from G20 to G30/G31,
mark the box on the TECHNICAL DATA PLATE.
X
G30/G31 - 29/37 mbar
– carry out the "
Automatic calibration procedure
" and then
refit the front panel (2) securing it with the two screws (1).
1
2
Fig. 48
7.7
Automatic calibration procedure
This procedure MUST ALWAYS be performed when the appliance
is first turned on, when the gas is changed and after replacing:
– the nozzles for gas conversion
– the gas valve following a fault
– the electronic board following a fault
– electrode
– fan
– burner
and is necessary so that the new components can be identified
and can communicate with those already fitted on the boiler.
m
CAUTION
Considering that:
– the front panel has been removed, the control
panel has been brought forward and down and that
the points (6) and (7) of the gas valve have been
connected to the pressure gauges
– the main system switch must be set to "ON"
– the gas supply must be open
– there must be no current requests for heat
("Summer" mode
l
with hot water valve closed or
"Winter"
n
with air thermostats open)
–
the adjustments described below must be carried out
in sequence.
6
7
Fig. 49
7.7.1
Setting the type of gas (only after GAS
CONVERSION)
– go into the parameter section by pressing the buttons
r
and
t
(for approximately 5 seconds) at the same time until
"PAR
01"
(parameter number) and the value set (0) appears on the
display
NOTE:
holding the buttons
r
or
t
increases the speed of the
scrolling movement. Pressing the button
r
allows the user to
scroll through the previous parameters.