Beretta CIAO S 20 C.S.I. Manuel D'utilisation page 9

By activating the function the burner is ignited through simula-
tion of heat request in heating.
To perform calibration operations, proceed as follow:
- switch off the boiler
- remove the shell and access the card
- insert the jumper JP1 (fi g. 16) to enable the knobs placed on the
control panel to the minimum and maximum heating adjustment
functions.
- make sure that the mode selector is in winter position (see section
4.2).
- power the boiler
Electric card in voltage (230 Volt)
- turn the heating water temperature adjustment knob B (fi g. 17) until
it reaches the minimum heating value as indicated in the multigas
table
- insert the jumper JP2 (fi g. 16)
- turn the domestic hot water temperature adjustment knob C (fi g.
17) until it reaches the maximum heating value as indicated in the
multigas table
- remove the jumper JP2 to store the maximum heating value
- remove the jumper JP1 to store the heating minimum value
and to get out the calibration procedure
- reconnect the compensation inlet to the air distribution box
Disconnect the pressure gauge and retighten the pressure test point
screw.
To fi nish the calibration function without storing the set values,
proceed as follows:
a) set the mode selector to position
b) remove power supply voltage
c) remove JP1/JP2
The calibration function is automatically fi nished, without storing
minimum and maximum values, after 15 minutes of its activa-
tion.
The function is automatically fi nished also in case of defi nitive
stop or lockout.
Also in this case, function conclusion DOES NOT provide values
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 ambient 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) according
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 in sequence: shell, air distribution box cover and combus-
tion chamber cover (fi g. 19)
- disconnect the spark plug cable connection
- slide off the lower cable grommet from the seat of the air distribution
box
- remove the burner fi xing screws and remove the latter with the
spark plug attached and corresponding cables
- using a socket or fork spanner, remove the nozzles and the wash-
ers 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
- place the cable grommet with the spark plug cable in its seat in
- restore connection of the spark plug cable
- refi t the combustion chamber cover and the cover of the air distribu-
- overturn the control instrument panel towards the boiler front part
- open the card cover
- on the control card (fi g. 16):
- reposition the components previously removed
- restore voltage to the boiler and reopen the gas tap (with boiler
5 MAINTENANCE
o ensure product characteristics and effi ciency remain intact and
T
to comply with prescriptions of current regulations, it is necessary
to render the appliance to systematic checks at regular intervals.
Control frequency depends on the installation and use conditions,
(OFF)
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 fl ue exhaust connections or devices, and their accessories.
Once the interventions are fi nished a qualifi ed technician must check
that the pipes and the devices work correctly.
IMPORTANT: before carrying out any cleaning or maintenance
operation 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 infl ammable substances
(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
Ciao S C.S.I.:
To carry out the combustion analysis, proceed as follows:
- open the hot water tap to its maximum output
- set the mode selector to summer
- remove the screw of the combustion analysis inlet cover (fi g. 18)
- power the boiler
Ciao S R.S.I.:
- switch off the boiler
- set the function selector to winter mode
- remove the housing and access the card
- insert the jumpers JP1 and JP2
- use a screwdriver to prise open the plug on the control panel
- bring the trimmer P2 to the maximum value, using a screwdriver
- remove the screw of the combustion analysis inlet cover (fi g. 18)
- 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
screws fi xing it to the gas manifold
the air distribution box
tion box
- if the conversion is from methane gas to LPG, insert the jumper
in position JP3
- if the conversion is from LPG to methane gas, remove the jumper
from position JP3
in operation, check correct seal of the gas feeding circuit connec-
tions).
Conversion must be carried out by qualifi ed personnel.
After conversion, adjust the boiler again following the
indications in specifi c section and apply the new identifi -
cation label contained in the kit.
temperature selector to the maximum value (fi g. 8a).
and insert the probes
(turn clockwise)
and insert the probes
analysis inlet fastening carefully the screw previously removed.
CIAO S C.S.I. - CIAO S R.S.I.
and the domestic hot water
9