Beretta CIAO GREEN 25 R.S.I. [23/156] Gas conversion fig 41 42
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Beretta CIAO GREEN 25 R.S.I. [23/156] Gas conversion fig 41 42

Beretta CIAO GREEN 25 R.S.I. [23/156] Gas conversion fig 41 42
23
ENGLISH
board,eitherwithorwithoutrequestforheat.
Thisfunctioncannotbeactivatedwhenconnectedtoaremotecontrol.
Upon activating the function the setting parameters are visualized in the
ordergivenbelow,eachfor2seconds.Eachparameterisdisplayedtogether
with its corresponding icon and fan rotation speed measured in hundreds
1.Maximum
2.Minimum
3.Max.heating
4.SlowignitionP
5.Max.presetheating
GAS VALVE CALIBRATION
- Connect the boiler to the power supply
- Open the gas tap
- Set the function selector to (OFF/RESET) (monitor off)
- Loosen the screws (E), remove the housing, then lower the instrument
paneltowardsyou(g.14)
- Loosenthexingscrewsonthecover(F)toaccesstheterminalboard
(g.16)
- PresstheCObutton(g.26)
Live electrical parts (230 V AC).
- Waitforburnerignition.
Thedisplayshows“ACO”andtheyellowLEDashes.Theboileroper-
atesatmaximumheatoutput.
The “combustion analysis” function remains active for a limited time (15
min);ifadeliverytemperatureof90°Cisreached,theburnerisswitched
off.Itwillbeswitchedbackonwhenthistemperaturedropsbelow78°C.
- Insert the analyser probe in the ports provided in the air distribution box,
afterremovingthescrewsfromthecover(g.40)
- Pressthe“combustionanalysis”buttonasecondtimetoreachthenum-
ber of rotations corresponding to the maximum domestic hot water out-
put(table1);theyellowLEDcontinuestoashwhiletheredLEDisxed
- Check the CO2 value: (table 3) if the value does not match the value
given in the table, use the gas valve maximum adjustment screw
- Pressthe“combustionanalysis”buttonathirdtimetoreachthenumber
ofrotationscorrespondingtotheminimumoutput(table2);theyellow
LEDcontinuestoashwhilethegreenLEDisxed
- Check the CO2 value: (table 4) if the value does not match the value
given in the table, use the gas valve minimum adjustment screw
- To exit the “combustion analysis” function, turn the control knob
- Removetheuegasprobeandrettheplug
- Closetheinstrumentpanelandretthehousing.
The “combustion analysis” function is automatically deactivated if the
boardtriggersanalarm.Intheeventofafaultduringthecombustionanal-
ysiscycle,carryouttheresetprocedure.
table 1
table 2
table 3
table 4
MAXIMUM NUMBER OF
FAN ROTATIONS
METHANE
GAS (G20)
LIQUID GAS
(G31)
25R.S.I.heating-DHW 49 - 61 49 - 61 rpm
Max. CO
2
METHANE
GAS (G20)
LIQUID GAS
(G31)
9,0 10,5 %
Min. CO
2
METHANE
GAS (G20)
LIQUID GAS
(G31)
9,5 10,5 %
MINIMUM NUMBER OF
FAN ROTATIONS
METHANE
GAS (G20)
LIQUID GAS
(G31)
14 14 rpm
4.8 Gas conversion (g. 41-42)
Gas conversion from one family of gases to another can also be easily
performedwhentheboilerisinstalled.
Thisoperationmustbecarriedoutbyprofessionallyqualiedpersonnel.
The boiler is designed to operate with methane gas (G20) according to the
productlabel.
It is possible to convert the boiler to propane gas, using thespecialkit.
For disassembly, refer to the instructions below:
- switch off the power supply to the boiler and close the gas tap
- remove in sequence: housing and air distribution box cover
- removethexingscrewfromtheinstrumentpanel
- unhook and turn the instrument panel forwards
- remove the gas valve (A)
- remove the nozzle (B) inside the gas valve and replace it with the nozzle
from the kit
- retthegasvalve
- remove the silencer from the mixer
- open the two half-shells by prising apart the corresponding hooks (C)
- replace the air diaphragm (D) in the silencer
- rettheairdistributionboxcover
- re-power the boiler and turn on the gas tap
Adjust the boiler as described in the chapter entitled “Adjustments” with
referencetotheinformationonLPG.
Conversion must be carried out by qualied personnel.
Once the conversion is complete, afx the new identication
label supplied in the kit.
4.9 Checking the combustion parameters
To carry out the combustion analysis, proceed as follows:
- set the main switch of the installation to the “OFF” position
- loosenthexingscrews(D)onthehousing(g.13)
- move the base of the housing forwards and then upwards to unhook it
from the chassis
- loosenthexingscrews(E)ontheinstrumentpanel(g.14)
- lift then turn the instrument panel towards you
- loosenthexingscrewsonthecover(F)toaccesstheterminalboard
(g.16)
- Pressthe“CO”button(g.26)
Live electrical parts (230 V AC).
- Waitforburnerignition.Thedisplayshows“ACO”,theyellowLEDash-
esandtheboileroperatesatmaximumheatoutput.
- insert the analyser probe in the ports provided in the air distribution box,
afterremovingthescrewsfromthecover(g.40)
- check that the CO2 values match those given in the table, if the value
shown is different, change it as indicated in the chapter entitled “Gas
valvecalibration”.
- performthecombustioncheck.
Then:
- remove the analyser probe and close the sockets for combustion analy-
sis with the special screw
- closetheinstrumentpanelandretthehousing
The ue gas analysis probe must be fully inserted as far as
possible.
IMPORTANT
Even during the combustion analysis phase, the function that switches the
boiler off when the water temperature reaches the maximum limit (about
90°C)remainsenabled.

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