38
EN
– 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 gas-
ket supplied
– refit the components in reverse order and fix in place as ap-
propriate
8
9
10
12
11 10
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 G31, mark the
box on the TECHNICAL DATA PLATE.
X
G31 - 37 mbar
– carry out the "
Automatic calibration procedure
" and then re-
fit 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 appli-
ance is first turned on, when the gas is changed and after re-
placing:
– 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 pan-
el has been brought forward and down and that the
points (6) and (7) of the gas valve have been connect-
ed 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 ("Sum-
mer" mode
l
with hot water valve closed or "Win-
ter"
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 CONVER-
SION)
– 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.
