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12.4 COMBUSTION TEST (CO
For correct boiler operation, the content of (CO
following table. If the value of (CO
electrodes and position them correctly. If the problem persists, use the following function.
Nominal value
Maximum
power
Permitted value
Nominal value
Ignition
power
Permitted value
Nominal value
Minimum
power
Permitted value
The combustions analisys shall be done using an analyzer regularly calibrated.
During normal operation the boiler performs combustion control cycles. In this phase, CO values higher than 1000 ppm can
occur for brief periods of time.
COMBUSTION ADJUSTMENT FUNCTION (CO
This function sets out to partially adjust the value of CO
• Press buttons
and
seconds followed by programme row "304" alternated with the % of boiler power.
• After the burner is lit, the boiler reverts to maximum DHW power (100). When the display shows "100" it is possible to partially
adjust the value of CO
%;
2
• press
. The display shows "00" alternating with the function number "304" ( flashes);
• press
to raise or lower the amount of CO
• press
to save the new value and view the power value "100" on the display again (the boiler continues operating at
maximum DHW power).
This procedure can also be used to adjust the quantity of CO
after point 5 of the procedure described above.
• After saving the new value (point 5 of the procedure), press
CO
to stabilise and then adjust as described in point 4 of the procedure (the power value is a number <> 100 and <> 0) then
2
save (point 5).
• press
again to take the boiler to minimum power. Wait for the value of CO
point 4 of the procedure (power value = 00);
• to exit the function, press the buttons for at least 6 seconds as described in point 1.
13. GAS VALVE
This appliance does not require any mechanical adjustment on the valve. The system ensures electronic auto-adaptation.
Gas valve key
Pi
Gas supply inlet pressure tap
13.1 GAS CONVERSION METHODS
Only an Authorised Technical Assistance Service can convert boiler operation from NATURAL GAS to LPG or vice-versa. To
perform calibration, set parameter P02 as described in the PARAMETER SETTINGS section. Lastly, check the combustion
parameters as described in the SPECIAL FUNCTIONS - CHECKING COMBUSTION PARAMETERS section.
When the gas change is completed the boiler data plate must be amended to indicate the new gas data.
)
2
- O
) in the combustion fumes must observe the tolerances indicated in the
2
2
- O
) is different, check the electrodes and their relative distances. If necessary, replace the
2
2
G20
1.12 - 1.24 - 1.28
24 - 28 - 33 - 40
CO
%
O
%
2
2
8.7
5.4
8.2 – 9.3
6.3 – 4.3
8.7
5.4
8.2 – 9.3
6.3 – 4.3
8.8
5.2
8.2 – 9.3
6.3 – 4.3
%. The following procedure is used.
2
together for at least 6 seconds. When the function is enabled, the displays shows "On" for a few
(from -3 to +3).
2
1.12
CO
%
O
2
2
10.5
5.2
10.0 – 11.0
6.0 – 4.5
10.8
4.8
10.3 – 11.3
5.5 – 4.1
10.0
6.0
9.5 – 10.5
6.8 – 5.2
%)
2
to the ignition power and to the minimum power by pressing
2
to take the boiler to its ignition power. Wait for the value of
to stabilise and then adjust as described in
2
35
G31
1.24 - 1.28 - 24
28 - 33 - 40
%
CO
%
2
10.0
9.5 – 10.5
6.8 – 5.2
10.8
10.3 – 11.3
5.5 – 4.1
10.0
9.5 – 10.5
6.8 – 5.2
7219620.01 (1-04/15)
O
%
2
6.0
4.8
6.0
Pi
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