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During initial ignition, the burner may not ignite (causing the boiler to shut down) until any air in the gas pipes is vented.
In this case, repeat the ignition procedure until gas reaches the burner. To reset boiler operation, press
seconds.
For the first few ignitions immediately after installation the system must implement a self-learning procedure to reach the
correct ignition level.
12.2 SYSTEM GAS EXTRACTION FUNCTION
This function is used to facilitate the elimination of the air inside the heating circuit when the boiler is first installed or after mainte-
nance when the water is drained from the primary circuit.
To enable the system gas extraction function press buttons
on the display for a few seconds, followed by programme row 312.
The electronic board will activate a pump on/off cycle lasting 10 minutes. The function will automatically stop at the end of the
cycle. To manually exit this function, press the above buttons together for 6 seconds once again.
12.3 CHIMNEY SWEEPER
This function enables the boiler to generate maximum heating power. After activation, the boiler power % can be adjusted from
minimum to maximum in the DHW mode. The following procedure is used.
• Press buttons
and
seconds followed by programme row "303" alternated with the % of boiler power.
• Press
to gradually adjust power (sensitivity 1%).
• To exit press both buttons together for at least 6 seconds, as described in point one.
Press
to display the instantaneous flow temperature for 15 seconds.
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.
CO
Nominal value
8,7
Admitted value
8,0 - 9,4
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 maxi-
mum 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.
7108194.01 (1-11/11)
together for at least 6 seconds. When the function is enabled, the displays shows "On" for a few
)
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
%
O
%
CO
2
2
5,4
10,0
6,6 - 4,1
9,2 – 10,8
%. 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
together for 6 seconds. When the function is active, On appears
G31
%
O
%
2
2
5,7
6,9 - 4,4
%)
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
28
for at least 2
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