Beretta Ciao 24 C.A.I. e Manuel D'installation Et D'utilisation page 8

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Disconnect the pressure gauge and retighten the pressure test
point screw.
To finish the calibration function without storing the set val-
ues, proceed as follows:
a) set the mode selector to position
b) remove power supply voltage
c) remove JP1/JP2
The calibration function is automatically finished, without
storing minimum and maximum values, after 15 minutes of
its activation.
The function is automatically finished also in case of definitive
stop or lockout.
Also in this case, function conclusion DOES NOT provide val-
ues storing.
Note
To calibrate only maximum heating, it is possible to remove the
jumper JP2 (to store the maximum) and then get out from the func-
tion, without storing the minimum, setting the mode selector to
(OFF) or removing the voltage from the boiler.
After each intervention on the adjustment element of the
gas valve, seal it with sealing varnish.
When adjustment is complete:
- restore set temperature with the room thermostat to the desired
temperature
- set the heating water temperature selector to the desired position
- close the instrument panel
- pull the shell back in place.
4.6 Gas conversion operations
Conversion from a family gas to other family gas can be performed
easily also when the boiler is installed.
The boiler is designed to operate with methane gas (G20) accord-
ing to the product label.
It is possible to convert the boilers from one gas type to another by
using the appropriate kit supplied upon request:
- Methane conversion kit
- LPG conversion kit.
For disassembly refer to instructions below:
- remove power supply from the boiler and close the gas tap
- remove the components to access to the internal parts of the
boiler (fig. 18)
- disconnect the spark plug cable connection
- remove the burner fixing screws and remove the latter with the
spark plug attached and corresponding cables
- using a socket or fork spanner, remove the nozzles and the
washers and replace them with the ones in the kit
Use and assemble the washers contained in the kit also
in case of manifolds without washers.
- reinsert the burner in the combustion chamber and tighten the
screws fixing it to the gas manifold
- restore connection of the spark plug cable
- overturn the control instrument panel towards the boiler front part
- open the card cover
- on the control card (fig. 15):
- if the conversion is from methane gas to LPG, insert the jump-
er in position JP3
- if the conversion is from LPG to methane gas, remove the
jumper from position JP3
- reposition the components previously removed
- restore voltage to the boiler and reopen the gas tap (with boiler in
operation, check correct seal of the gas feeding circuit connections).
Conversion must be carried out by qualified personnel.
After conversion, adjust the boiler again following the
indications in specific section and apply the new identifi-
cation label contained in the kit.
8
5 - MAINTENANCE
To ensure product characteristics and efficiency remain intact and
to comply with prescriptions of current regulations, it is necessary
to render the appliance to systematic checks at regular intervals.
(OFF)
Control frequency depends on the installation and use conditions,
but it is therefore necessary an annual check-up by the authorised
personnel from the Technical Assistance Service.
Turn off the appliance to carry out the maintenance of the structure
near the flue exhaust connections or devices, and their accesso-
ries. Once the interventions are finished a qualified technician must
check that the pipes and the devices work correctly.
IMPORTANT: before carrying out any cleaning or maintenance op-
eration of the appliance, use the appliance and system switch to
interrupt power supply and close the gas supply turning the tap
placed on the boiler.
Do not clean the appliance or its parts with inflammable substanc-
es (e.g. petrol, alcohol, etc.).
Do not clean panels, painted parts and plastic parts with paint thinner.
Panel cleaning must be carried out only with soapy water.
5.1 Check the combustion parameters
To carry out the combustion analysis, proceed as follows:
- open the hot water tap to its maximum output
- set the mode selector to summer
temperature selector to the maximum value (fig. 7a).
- insert the flue gas sampling connector in the straight section of
pipe after the hood outlet.
The hole for inserting the gas analysis probe must be made in
the straight section of pipe after the hood outlet, compliance with
applicable legislation (fig. 17).
Insert the flue gas analysis probe completely.
- power the boiler.
The appliance works at maximum output and it is possible to check
combustion.
After analysis is complete:
- close the hot water tap
- remove the probe from the analyser and close the combustion
analysis inlet fastening carefully the screw previously removed.
and the domestic hot water

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