75EN
cod. 3540000272 - Rev. 01 - 01/2024
the three power levels "Hi", "ME" and "Lo” can be scrolled by pressing the "Heating + or -
" buttons to recheck or correct the CO
2
level.
• Press the “OFF/Summer/Winter” and “Heating +” buttons for 5 seconds to exit the com-
plete manual calibration mode and save the settings. Modification of the parameters to ad-
just the CO
2
in complete manual calibration mode will take not more than about 8 minutes
Checking the combustion values
MAKE SURE THE FRONT PANEL IS CLOSED AND THE INLET/FUME OUTLET DUCTS ARE
COMPLETELY ASSEMBLED.
1. Put the boiler in heating or DHW mode for at least 2 minutes.
2. Activate TEST mode (see ”TEST mode activation” on page 77 ).
3. Using a combustion analyzer connected to the devices located on the starting accessories
above the boiler, check that the CO
2
content in the fumes, with the boiler operating at maximum
and minimum power, matches that indicated in table 9.
Table 9- CO2 values to respect
4. If the combustion values do not match, do the manual calibration as described in the following
paragraph.
5. Activate a manual calibration and then modify the values of Hi, ME and Lo to obtain the CO
2
values as per table 9.
Calibration
IMPORTANT: During the “Complete manual calibration” or “Manual calibration” proce-
dure, or during the “CO
2
value checking” phase, the front panel must be closed and the
inlet/fume outlet ducts completely assembled.
Manual calibration
Calibration procedure.
• Put the boiler in standby mode.
• To activate manual calibration, simultaneously press the OFF/Summer/Winter buttons (detail
7 - fig. 1) and the “Heating +” button (detail 4 - fig. 1) for 5 seconds. Calibration will start in
heating request. If there is insufficient heat dissipation, a DHW request can be made (the three-
way valve will automatically switch in the DHW circuit).
• Manual calibration will start. During the ignition phase, the flashing symbols MA and "nu"+ ra-
diator + faucet alternating will appear. With flame present (flashing icons “Hi + flame + faucet
+ radiator”) the boiler will do the check first in Hi (maximum power) then ME (Medium power)
then Lo (minimum power). Calibration can be stopped at any time by pressing the "OFF/Sum-
mer/Winter" and "Heating +” buttons for 5 seconds.
• Afterwards, a numerical value between 0 and 6 will appear on the display (at this point the
boiler is at minimum power "Lo"). At this point the CO
2
can be adjusted.
Using the "DHW + and -” buttons, adjust the CO
2
at minimum power (Lo); each time the "DHW
+ or -" buttons are pressed, the display will show the modified value and then the icon "Lo" (to
indicate the minimum power level). The adjustment range is from 0 to 6 (in all power levels Hi,
ME, Lo), increasing the value will increase the CO
2
level and vice versa.
Press the "Heating +" button, the display will show the icon "ME", a numerical value will appear
when the ignition/intermediate power is reached. Using the “DHW + and -” buttons, adjust the
CO
2
at medium/ignition power ME; each time the “DHW + or -” buttons are pressed, the dis-
play will show the modified value and then the icon "ME" (to indicate medium/ignition power
level). Press the "Heating +" button, the icon "Hi" will appear on the display and a numerical
value will appear when the maximum power is reached.
Using the "DHW + and -” buttons adjust the CO
2
at maximum power (Hi).
Each time the “DHW + or -” buttons are pressed, the display will show the modified value and
then the icon "Hi"(to indicate the maximum power level). After adjusting the CO
2
at maximum
G20 G30/G31 G230
9% ±0,8 10% ±1 10% ±1
To Next Page
Loading...
Need help?
General