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Remove the cover that closes the service inlet (located on the
shelf - Fig 12) and insert through the hole the silicon pressure
gauge tube
Loosen by approximately two turns the screw of the pressure tap
downstream of the gas valve and connect the pressure gauge to it
Carefully close the casing and place the electric switch of the sys-
tem to on
Access the Calibration Menu
Open the hot water tap and wait until ignition of the burner.
Upon activation of the menu will appear first the word Ma and then the
word to to compose Manu and
water heater is operating at maximum capacity.
Turn the knob until visualize on the pressure gauge the maximum
burner pressure (see data table)
To store the value press the reset button
Press the reset button to select the next lowest setting value
Turn the knob until visualize on the pressure gauge the minimum
burner pressure (see data table)
To store the value press the reset button
Press the reset button until MENU' flashing, release the button:
the display shows
Press again the reset button until the display shows MENU' flashing,
release the button: the display shows the set point temperature
Close the hot water tap.
The calibration operation ends automatically after 15 minutes of
or in the case of overheating (67°C)
inactivity
Alarm history menu
This feature allows displaying of the last 10 errors that have occurred on
the appliance.
Upon activation of the menu, the figures
error), the error code and the word
appear alternately.
Turning the knob it is possible to scroll through the errors index. Display
ranges from the most recent to the earliest.
If the user pauses, the display shows the letters AL to indicate access
within the errors history menu.
Press the reset button until MENU' flashing, release the button: the di-
splay shows
.
Press again the reset button until the display shows MENU'
flashing, release the button: the display shows the set point tem-
perature.
Info menu
This feature allows displaying:
Last version of software review
Hot water temperature in direct
Hot water quantity in direct (l/min).
This menu is active during all the production of instant hot water.
Exiting the menu takes place automatically after 15 minutes of
inactivity or by pressing the reset button.
will appear, indicating that the
(index of the last stored
(es:
=>
=>
) will
Maintenance
Please have the appliance checked by qualified per-
sonnel in accordance with current regulations to
guarantee correct, continuous and reliable water
heater operations.
Insufficient or inadequate maintenance can compromise the safe-
ty of the appliance.
Before carrying out any cleaning or maintenance, switch off the
appliance using the omni-polar switch on the power supply line
and close the gas and water valves to the appliance.
External cleaning
In particular check the main components and the tightness of the gas
circuit.
To clean the exterior panels use a cloth dampened with soapy water.
Do not use solvents, powders or abrasive sponges.
Do not clean the appliance and/or its parts with flammable substances
(example: petrol, alcohol, oil, etc.).
Dismantling the casing (Fig. 21)
Remove the casing by unscrewing the fastening screws located on the
bottom of the water heater and detaching the casing at the top.
Accessibility to the electronic board (Fig. 22)
Remove the casing by referring to the specific paragraph.
Remove the panel by unscrewing the screws that secure it to the seat of
the electronic board.
Disconnect the connectors.
Removing the gas valve (Fig. 23)
Remove the casing by referring to the specific paragraph.
Unscrew the screws that secure the panel to the bottom shelf.
Remove the panel without disconnecting the wiring and attach it to the
bracket as shown in the figure.
Disconnect the gas valve by unscrewing the retaining screws and the nut
connecting to the gas pipe.
Removing the fan (Fig. 24)
Remove the casing by referring to the specific paragraph.
Unscrew the fixing screws of the fan.
Lower the fan freeing it from the hooks and slide it to the left.
Removing the burner (Fig. 25a-25b-25c-25d)
Remove the casing by referring to the specific paragraph.
Remove the clip (detail
A fig. 25a).
Disconnect and remove the gas pipe
Turn the screws showed in
See fig. 25c:
unscrew the nut, remove the clip and remove the hot water
pipe.
Unscrew the fixing screws showed in fig. 25d and remove the burner.
Dismantling the heat exchanger (Fig. 26)
Remove the casing and the burner by referring to the specific paragraph.
Disconnect and remove the cold water pipe.
Unscrew the fixing screws of the heat exchanger.
Remove the heat exchanger.
13
(
B fig. 25a).
detail
fig. 25a b
and lower the plat
.
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