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TECHNI
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Minimum heat output
After confirming the intermediate power calibration, the boiler is calibrated at minimum power.
The beginning of the minimum phase is displayed with "Calibration Phase min...", it means that the boiler is adjusting the minimum
power.
To check and correct the Co2 values, continue waiting for the combustion set for minimum power to be engaged. After the engaging is
complete, "Calibration Phase min ok" appears and the below line "Combustion Set" is highlighted at the same time.
Under these conditions, the combustion value linked to the supply of minimum power can be measured (Par. 3.12)
Any corrections to the minimum combustion are linked to the same actions illustrated for the nominal power.
Complete calibration
Calibration Phase
Combustion Set
Power perc.
CH temperature
0
64
24°C
Flame
On
%
Central Heating active
min ok
59
If the Co2 value is not that indicated in the table (Par. 4.2), edit the value as described in the paragraph (Par. 3.12).
When the combustion value measured on the minimum power is correct, request the end of the procedure by pressing the “OK” "Cali-
bration Phase min ok" button.
The end of the function is accompanied by the window "Complete calibration".
3.12 CO2 REGULATION
During the complete calibration (Par. 3.11) it is possible to modify the CO
2
values.
In order to have an exact value of
CO
2 in the flue gas, the technician must insert the sampling probe into the well to the bottom
In case of calibration for propane air, select the analyser in LPG gas mode.
Check that theCO
2
value is the one indicated in the table (Par. 4.2), (considering a maximum tolerance of ± 0.2%), otherwise change the
value as described below:
Complete calibration
Calibration Phase
Combustion Set
Power perc.
CH temperature
99
22
53°C
Flame
On
%
Central Heating active
max ok
60
The modification takes place only if the line "Combustion Set" is highlighted; using the “Set central heating / C.H.” knob, change the
"Combustion Set" value then press “OK” to confirm the new value.