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15 - SAFETY DEVICES AND ALARMS
To reset the alarm, press and hold key 1 (ESC) for a few seconds. The boiler checks whether the cause of the alarm is ongoing.
In the rst case, the alarm continues to be displayed, in the second case it turns OFF.
If the alarm persists, contact a service centre.
NORMAL SHUTDOWN (on the panel: OFF with ashing ame symbol)
When the shutdown key is pressed, or when there is an alarm signal, the boiler enters the thermal extinguishing phase which involves
automatic execution of the following phases:
• Stop pellet loading
• The room fan (if installed) keeps running at the set speed so that the smoke temperature reaches 100°C, then runs at minimum speed
until the shut down temperature is reached.
• The smoke extractor fan is activated at maximum speed and remains on for a xed period of 10 minutes, at the end of which if the
smoke T has dropped below the stop threshold, the fan stops, otherwise it will continue to operate at minimum speed until the
temperature drops below the threshold.
• If the boiler has been shutdown regularly but, due to thermal inertia, the smoke temperature exceeds the threshold again, the
shutdown phase will be repeated at minimum speed until the temperature falls.
BLACKOUT with boiler ON
In the event of a blackout, the boiler does the following:
• Power failure of less than 10”: continues the work in progress;
• After a loss of power of more than 10’ which occurred when the boiler was on, or during ignition, you can restore the boiler to its
previous operating condition when power returns as follows:
1. Cool the boiler by activating the smoke extractor at minimum speed for 10’ then proceed to the next step;
2. Restore the boiler to the operating condition prior to the blackout.
During phase 1, the panel shows ON BLACK OUT.
During phase 2, the panel shows Start-up.
If during phase 1 the system receives manual user commands from the control panel, it stops the blackout restoration sequence and
begins the start-up or shutdown commanded by the user.
BLACKOUT OF MORE THAN 10’’ DURING EXTINCTION OF BOILER
If there is a power loss EXCEEDING 10” while the boiler is shutting down, when power is restored the boiler will automatically turn on in
shutdown mode, even if the smoke temperature has fallen below 45°C in the meantime. This phase can be skipped by pressing key 1 (esc)
(skips to start-up) and pressing it again (recognises that the boiler is o).
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