Ferroli PENELOPE HR Manual De Instalación, Uso Y Mantenimiento página 42

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3.3 Combustion chamber overpressure safety
Any and/or sudden overpressures in the combustion fumes inside the chamber and fume exhaust ducts are
discharged by opening of the safety valves located on the heat exchanger. During normal operation these valves are
kept closed by their weight and the negative pressure in the combustion chamber, guaranteeing a seal against any
smoke escaping.
Periodically check closing, the integrity of the device and its operation.
3.4 Overheating - pellet hopper temperature safety thermostat
3.5 Safety against flare-back in the pellet chute
The solutions preventing flare-back are:
negative pressure in the combustion chamber see par. 3.2.
the siphon shape of the pellet chute.
the hopper temperature safety see par. 3.4.
3.6 Overcurrent protection device
The unit is protected against overcurrent by 2A fuses on the power supply of the main stove switch located at the
back.
3.7 Power failure safety
In case of brief power failures, the stove relights automatically.
A temporary power failure does not limit stove safety and the hopper temperature does not reach high values
(< 85°C), given the small quantity of pellets burning in the brazier. This anomaly can result in some smoke briefly
escaping into the room, which does not involve any risk for safety.
Do not tamper with the safety devices.
3.8 Fume extractor fan failure
If the fume extractor fan stops for any reason, the electronic controller instantly stops the pellet feed, displaying the
message ' AL 4 FAN FAIL '.
A temperature probe is connected to a safety thermostat above the pellet
chute which automatically interrupts the pellet supply in case of excessive
heating > 85°C. In this case the extractor and/or fans continue working,
allowing the stove to cool down rapidly. The fault is displayed on the control
panel with a message 'AL 7 THERMAL SAF'. In case of activation, proceed
as follows:
Allow the stove to cool down for at least 45 minutes.
Reset the thermostat by pressing the button near the switch on the back of
the stove, after unscrewing the protection cap
(figure opposite).
Restart the stove normally.
42
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