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table 2
METHANE
MINIMUM NUMBER
GAS (G20)
OF FAN ROTATIONS
table 3
METHANE
GAS (G20)
Max. CO2
table 4
METHANE
GAS (G20)
Min. CO2
4.7 Gas conversion (fi g. 34)
Conversion from a family gas to other family gas can be performed easily also
when the boiler is installed.
This operation must be carried out by professionally qualifi ed personnel.
The boiler is designed to operate with methane gas (G20) according to the pro-
duct label.
It is possible to convert the boiler to another gas, using the special kit.
For disassembly, refer to the instructions below:
- remove power supply from the boiler and close the gas tap
- remove the casing
- remove the gas pipe (A) - fi g. 34
- remove the nozzle (B) - fi g. 34 - contained in the gas train, and replace it with
the one supplied
- reassemble the gas train
- re-power the boiler and turn on the gas tap
Conversion must be carried out by qualifi ed personnel.
After conversion, adjust the boiler again (observing the "Adjust-
ments" section) and apply the new identifi cation label contained in
the kit.
4.8 Checking the combustion parameters (chimney sweep fun-
ction)
To carry out the combustion analysis, proceed as follows:
- turn the function selector in OFF position
- turn the chimney sweep selector from position
Live electrical parts (230 V AC).
- Wait for burner ignition (about 6 seconds). The display shows "ACO", the yel-
low LED fl ashes 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 (fi g. 33)
- check that the CO2 values match those given in the table, if the value shown is
diff erent, 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 analysis with
the special screw
The fl 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.
- The combustion analysis function remains active for 15 minutes; it is possible
to interrupt it in advance moving the chimney sweep selector in
5 MAINTENANCE
To ensure product characteristics and effi ciency remain intact and to comply
with prescriptions of current regulations, it is necessary to render the appliance
to systematic checks at regular intervals.
When carrying out maintenance work, observe the instructions given in the
"Warnings and safety" chapter.
Turn off the appliance to carry out the maintenance of the structure near the fl ue
discharge connections or devices, and their accessories. Once the interventions
are completed, 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.
LIQUID GAS
G25
(G31)
14
14
14
LIQUID GAS
G25
(G31)
8,8
10
8,8
LIQUID GAS
G25
(G31)
8,8
10
8,8
to position (fi g. 25)
Routine maintenance
This normally means the following tasks:
- removing any oxidation from the burner;
- removing any scale from the heat exchangers;
- removing any residue from the condensate drainage pipe;
rpm
- checking and cleaning the drainage pipes;
- checking the external appearance of the boiler;
- checking the ignition, switch-off and operation of the appliance, in both do-
mestic water mode and heating mode;
- checking the seal on the gas and water couplings and pipes;
- checking the gas consumption at maximum and minimum output;
%
- checking the position of the ignition-fl ame detection glowplug;
- checking the gas failure safety device.
Do not clean the appliance or its parts with easily infl ammable substances (e.g.
benzine, alcohol, etc.).
Do not clean panels, painted parts or plastic parts with paint thinner.
Panel cleaning must be carried out only with soapy water.
%
Extraordinary maintenance
These tasks restore appliance operation in accordance with the design and regu-
lations - e.g. following the repair of an accidental fault.
This normally means:
- replacement
- repair
- overhaul of components
These tasks require special means, equipment and tools.
During the initial installation phase, or in the event of extraordinary
maintenance, you are advised to activate the procedure to discharge air
from the heating circuit and boiler (see the relevant paragraph).
6 SERIAL NUMBER
Heating function
Qn
Nominal heat delivery
Pn
Nominal heat output
IP
Degree of Protection
Pms
Maximum heating pressure
T
Temperature
ŋ
Performance
.
NOx
NOx class
Condensing Boiler
N.
230 V ~ 50 Hz
165 W
Pms = 3 bar T= 90 °C
position.
9
Gas type:
Gas category:
kW
Qn =
Pn =
kW
B23
-B53
-C13-C23-C33-C43-C53-C63
P
P
C83-C13x-C33x-C43x-C53x-C63x-C83x
IP
η
NOx:
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