Cola TOPFIRE 70 Installations-, Bedienungs- Und Wartungsanleitung Seite 53

3.2 Fume exhaust safety
In normal operation the combustion chamber is in a negative pressure, guaranteeing seal against possible smoke
leaks into the room. If a certain vacuum level is not reached or the fume exhaust outlet is blocked, the vacuum
switch detects the lack of a negative pressure inside the combustion chamber or the air flow meter detects a lack of
combustion air flow and, through the electronic controller, switches off the auger rotation motor, signaling the
anomaly with a message on the remote control 'AL 8 NO NEG PRESS' or 'AL 9 INSUF DRAFT'.
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, ensuring 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.
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the siphon shape of the pellet chute.
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the hopper temperature safety see par. 3.4.
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3.6 Overcurrent protection device
The unit is protected against overcurrent by a 2A fuse fitted on the power supply of the controller's electronic board
mounted on the right side of the pellet hopper.
3.7 Power failure safety
In case of brief power failures, the unit relights automatically.
A temporary power failure does not limit insert safety and the hopper temperature does not reach high values (<
85°C), given the small amount 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' on the remote control.
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 unit 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 insert to cool for at least 45 minutes, pull out the insert and reset the
thermostat by pressing the button on the right side after previously unscrewing the
protective cover. Reposition the monoblock inside the compartment, check that the
power is on and restart the insert.
53 TOPFIRE 70 – TOPFIRE 80