Last Calor SUSANNA Manuel D'installation, D'utilisation Et D'entretien page 35

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 eletronic card.
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.
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'.
4 STOVE USE
4.1 Introduction
The pellet stove has the advantage of combining heat from a wood flame with the convenience of automatic
management of temperature and the possibility of weekly programming of lighting and shutdown.
For safe and reliable use, observe the following:
when lighting the stove the first time, unpleasant odours may be created, therefore ensure good ventilation
of the room, especially during the first period of operation;
the hopper must only be filled with pellets, without allowing the bag to come into contact with the hot
surfaces of the stove;
do not put any type of fuel other than recommended wood pellets in the hopper;
the unit must not be used as a waste incinerator;
the stove must work only with the fire door always closed;
the fire door seals should be checked periodically to ensure air tightness;
to ensure efficient and correct operation, it is necessary to clean the brazier whenever pellets are loaded;
when lighting the stove for the first time, make sure to allow it to get hot gradually without overheating;
during lighting, operation and shutdown, the stove may creak a little due to the heat expansion.
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 8
SIC-DEP. 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.
35 SUSANNA