35
INSTALLER Section (en)
7219620.01 (1-04/15)
12.4 COMBUSTION TEST (CO
2
)
For correct boiler operation, the content of (CO
2
- O
2
) in the combustion fumes must observe the tolerances indicated in the
2
- O
2
G20 G31
1.12 - 1.24 - 1.28
24 - 28 - 33 - 40
1.12
1.24 - 1.28 - 24
28 - 33 - 40
CO
2
% O
2
% CO
2
% O
2
% CO
2
% O
2
%
Maximum
Nominal value 8.7 5.4 10.5 5.2 10.0 6.0
Permitted value 8.2 – 9.3 6.3 – 4.3 10.0 – 11.0 6.0 – 4.5 9.5 – 10.5 6.8 – 5.2
Ignition
Nominal value 8.7 5.4 10.8 4.8 10.8 4.8
Permitted value 8.2 – 9.3 6.3 – 4.3 10.3 – 11.3 5.5 – 4.1 10.3 – 11.3 5.5 – 4.1
Minimum
Nominal value 8.8 5.2 10.0 6.0 10.0 6.0
Permitted value 8.2 – 9.3 6.3 – 4.3 9.5 – 10.5 6.8 – 5.2 9.5 – 10.5 6.8 – 5.2
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
2
%)
CO
2
%
Press buttons and On
304%
100
adjust the value of CO
2
%
press
00304
press
CO
2
(from -3 to +3).
press
CO
2
to the ignition power and to the minimum power
after point 5 of the procedure described above.
to take the boiler to its ignition power. Wait for the value of
CO
2
save (point 5).
press
again to take the boiler to minimum power. Wait for the value of CO
2
to stabilise and then adjust as described in
to exit the function, press the buttons for at least 6 seconds as described in point 1.
13. GAS VALVE
Gas valve key
Pi
13.1 GAS CONVERSION METHODS
NATURAL GAS to LPG or vice-versa. To
perform calibration, set parameter P02
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.
Pi
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