8
Instructions for safe and efficient use
IT IS forbidden to tamper with the safety devices. You must rst eliminate the cause that triggered the safety
device before it is possible to ignite the boiler and thus restore operation. Refer to the chapter regarding the
alarms in order to understand how to interpret each alarm that may appear on the boiler’s display.
Antifreeze function: if the probe installed inside the boiler detects water temperature below 5 °C, it automatically enables the
circulation pump in order to prevent system freezing.
Pump anti-block function: in case of prolonged inactivity of the pump, it is enabled for 10 seconds at regular intervals in order
to prevent it from blocking.
e product is classied as rapid disconnection since it has passed the tests provided for by regulation EN 303-5 Chap. 5.14.
Safety valve:
this valve intervenes
to prevent hydraulic system
overpressure.
If boiler or system pressure ex-
ceeds 2.5 bar, it discharges water
from the circuit.
Important!
e appliance’s manufacturer
shall not be held liable for any
ooding caused by the trig-
gered safety valve if it has not
been correctly tted outside
the product to a suitable col-
lection and discharge system.
Automatic vent valve: this
valve discharges air inside the
boiler.
Gearmotor: if the gearmotor
stops due to a “ALAR-NO-
ACC”or “ALAR-NO-
FIAM”warning, the boiler
continues to operate until the
ame goes out as a result of
no fuel and until it reaches
the minimum cooling level.
Electric safety: the boiler is
protected against sudden cur-
rent uctuations (e.g. lighten-
ing) by a main 4 A fuse that
is found in the control panel
situated at the back of the boil-
er close to the power supply
cable. e electronic boards
are also protected with other
fuses.
WATER
RESET
Manual reset safety thermo-
stat for the water temperature: if
the water temperature exceeds
the safety value set at 100 °C,
boiler operation stops imme-
diately and the screen will display
“ALAR-NO-FIAM”. To restart
it , you must reset the thermo-
stat manually.
Flue pressure switch: check the pres-
sure in the ue pipe. is blocks the
pellet loading auger if the discharge
is obstructed or there are signicant
backpressures, for example, in case of
wind, an open combustion chamber
door or ue extractor fault. When
the pressure switch is triggered,
“ALAR-NO-ACC”will be displayed.
Flue temperature probe: this
thermocouple detects the ue
temperature, maintaining op-
eration or stopping the boiler
when the ue gas temperature
rises above the pre-set value.
Water temperature probe: if
the water temperature ap-
proaches the blocking temper-
ature (100 °C), the probe stops
the supply of pellets.
Safety devices
