Ariterm Biomatic+ 30 - Safety and Alarms Overview; General Safety Design Principles; Burner Safety Mechanisms Explained

ARITERM SWEDEN AB Installation, Operation & Maintenance - 2009.02.18- 6/32
SAFETY AND ALARMS
e boiler is designed according to the same main principles as an oil heated system.
e advantage of this pelletsystem is easy and comfortable handling, as the location of
the fuel store does not depend on the layout of the boiler room. From the safety point
of view, the separation of fuel store and burner in combination with interrupted fuel
supply between the two means high security.
In the event of temperature sensor failure, the high-limit thermostat stops ope-
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ration to prevent the boiler from overheating. e burner automatically resumes
normal operation after power failure or interrupted fuel supply.
Equipment failure leading to operation stop is indicated by a red LED combined
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with a message on the display panel indicating the cause of the failure.
In case of fuel shortage, there is also an audible alarm.
e boiler design is outstanding with safety as an integral part of the function. As
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the fuel supply is interrupted and corrected in the burner auger pipe before the
boiler wall, there is no continuous fuel line capable of transferring heat outside the
boiler wall which means that you do not have to rely on extra safety devices.
For details about the various alarm conditions please refer to ”Troubleshooting”.
Safety is a natural part of the burner function
Each time lling takes place, only a limited amount of pellets (150 g) is transported
through the external feeding system from the storage bin to the top feed connection.
To make sure that the correct amount of pellets is supplied from the top feed
connection to the burn pot, a separate supply auger has been installed immediately
under the top connection controlling the supply of pellets through the air lock and
burner auger. As the burner auger is feeding pellets to the burn pot three times a fast
as they are supplied, a safety zone containing only a few seperated pellets is created
between the air lock and the burn pot. is safety zone is always kept intact even in
case of power failure, insucient maintenance or equipment failure. In consequence,
safety has become an integral part of the burner functionality.
Air lock
Top feed connection
Back �flow
preventer
plate
Primary air tube
Ignitor tube
Burner auger
Boiler front
Supply
control
auger
Fan
The feeder screw is to be placed in relation
to the inlet of the burner such that when
the tipping chute hangs vertically from the
screw it opens out outside of the burner.