22
31
A
B
32
33
34
Fig. 18 a
Fig. 18 a
Fig. 18 d
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.5 CONVERTING THE WATER HEATER
TO OTHER TYPES OF GAS.
The operation of appliance transformation from
a gas family to another can be easily carried out
even if the appliance is installed.
Instructions regarding the transformation and
adjustment of various types of gas are described
below.
To transfer to LPG, place the plate on the mani-
fold, as indicated in Fig. 30.
30
Attention:
please note that transformation op-
erations must be carried out by professionally
authorised and qualified staff, in compliance with
the technical regulations in force.
Switch off the device from the omnipolar switch
provided on the power supply line and close the
gas and water cocks.
- Remove the casing by referring to the specific
chapter;
- remove the wire spring placed on the cold water
pipe (
Part. A
Fig. 31
);
- disconnect the gas pipe and remove it (
Part.
B
Fig. 31
):
- loosen the three screws shown in
Fig. 32
lower
the intermediate metal-sheet plate (
Fig. 33
);
- loosen the side fastening screws of the mani-
fold, remove the side brackets and extract the
gas manifold (
Fig. 34
);
- replace the manifold.
Attention:
the manifold is already equipped
with injectors, it is therefore not necessary to
replace them.
- Reassemble the components proceeding in
reverse order;
- if there are seals, they must be restored.
Parameter change 02 (type of gas)
Start the appliance and access the
Parameters
menu
( ), as follows:
- with the water heater on, press the reset button
( ) for approximately 10 seconds. The sym-
bols on the display will start flashing and first
( ) will be displayed, followed by ( );
- release the reset button;
- enter the code ( ) by turning the knob and
confirm by pressing reset;
- turn the knob to select ( ) (Parameters menu)
and confirm by pressing reset;
- on accessing the Menu, scroll through the list
with the knob until finding parameter 02 (gas
type), and press reset: the value that can be
reset will flash and it will be possible to select
the type of gas required by turning the knob:
0 (MTN) - 1 (LPG);
- if LPG gas is selected, propane gas is selected by
default. If you require butane gas, set parameter
13 to 2;
- save by pressing the reset button.
After the procedure, the appliance displays alarm
AL62, which indicates that you must calibrate
the gas valve.
Attention:
the menu is exited automatically after
5 minutes of inactivity, or by pressing the reset
button for a while.
Complete gas valve calibration
(Accessible ONLY by the Authorised Technical
Assistance Service).
To access the
AUTO
procedure, proceed as
follows:
- set the system’s electric switch Off;
- remove the casing;
- remove the cap that closes the service passage
(located on the bracket
Fig. 36
) and make it
pass through the hole of the silicone pipe of
the pressure gauge;
- loosen the pressure point screw downstream of
the gas valve by approximately two turns
(Fig.
36)
and connect a pressure gauge;
- close the casing properly;
- set the system’s electrical switch to on and open
the hot water cock.
Access the
Parameters menu
( ), as follows:
- with the water heater on, press the reset button
( ) for approximately 10 seconds. The sym-
bols on the display will start flashing and first
( ) will be displayed, followed by ( );
- release the reset button;
- enter the code ( ) by turning the knob and
confirm by pressing reset;
- turn the knob to select ( ) (Parameters menu)
and confirm by pressing reset;
- on accessing the Menu, scroll through the list
with the knob until finding parameter 17 (com-
plete or partial calibration), and press reset: the
value that can be reset will flash and it will be
possible to select value 5 by turning the knob:
- save by pressing the reset button.
Attention:
in case of a power failure the procedure
must be repeated.
Access the
Calibration menu
( ) as follows:
- press the reset button ( ) until the flashing
MENU
and ( ) appear on the display;
- turn the knob to select ( ) (Calibration menu)
and confirm by pressing reset;
-
AUTO
and (
) appear on the display to
indicate that the device operates fully;
- Turn the knob until the burner’s maximum
pressure value is displayed on the pressure
gauge
(Ref. Parag. 3.10)
;
- to save the value, press the reset button;
- press the reset button to select the next value
regarding minimum calibration (
);
- Turn the knob until the burner’s minimum
pressure value is displayed on the pressure
gauge
(Ref. Parag. 3.10)
;
- press the reset key;
- Press the reset button ( ) until
MENU
flashes
on the display, then release the button, the
screen displays ( );
- press the reset button again until the wording
MENU
flashes, then release the button: the
screen displays the value of the set temperature;
- close the hot water cock.
Attention:
the menu is exited automatically after
15 minutes of inactivity, or by pressing the reset
button for a while.
Attention:
in case of a power failure the procedure
must be repeated.
Attention:
write on the adhesive plate provided
the type of gas in which it was transformed, the
date when the transformation was carried out,
the name and signature of the operator who made
the transformation and then stick it close to the
existing plate.
