7729500 (03-12/19)
12
INST
ALLER Section
(en)
12. SPECIAL FUNCTIONS
12.1 INITIAL IGNITION
When lighting the boiler for the first time perform the following procedure. After electrically powering the boiler the code "
000
"
appears on the display. This means the appliance is ready for the "
initial lighting
" procedure.
Press
together and hold down for 6 seconds. "
On
" appears on the display for 2 seconds followed by code "
312
" indicating
that the "
system venting
" function is active. This function lasts 10 minutes.
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
for at least 2
seconds.
If the venting function is interrupted by a power blackout, start the function again when power is restored by pressing
and
together and holding them down for at least 6 seconds. If the display shows fault E118 (low pressure in hydraulic
circuit) during the venting function, open the filling tap on the appliance and restore the correct pressure.
The combustion of this appliance has been factory controlled, calibrated and set for operation with NATURAL GAS.
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
maintenance when the water is drained from the primary circuit.
To enable the system gas extraction function press buttons
together for 6 seconds. When the function is active,
On
appears 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
together for at least 6 seconds. When the function is enabled, the displays shows “
On
” for a few
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
2
%)
For correct boiler operation, the content of (CO
2
- O
2
) in the combustion fumes must observe the tolerances indicated in the
following table. If the value of (CO
2
- O
2
) is different, check the electrodes and their relative distances. If necessary, replace the
electrodes and position them correctly. If the problem persists, use the following function.
G20
Maximum and ignition power
Minimum power
CO
2
%
O
2
%
CO
2
%
O
2
%
Nominal value
9,0
4,8
8,7
5,4
Permitted value
8,3 – 9,7
6,1 – 3,6
8,4 – 9,0
5,9 – 4,8
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.
Содержание Star Condens+
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