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FUEL TANK SECURITY DEVICES
For the safety of the operation of the boiler the SAS MULTI FLAME burner
is equipped with a multi-level protection system.
It has a protection from wi-
thdrawing the flame into the reservoir of fuel by the feeder (mechanism of
two transport augers separated by the transfer duct, temperature sensor of
the fuel ducts) and additionally an overheat protection – a thermal circuit
breaker mounted on the boiler.
Fuel transport from the reservoir of fuel into
the chamber of the furnace chamber is carried out in order to eliminate the risk
of withdrawal of flame into the reservoir of fuel during normal operation, feeder
downtime and also in the case of interruption in the supply of electricity. The
task of the mechanism is to protect against uncontrolled retraction of fire into
the reservoir of fuel without the need for extinguishing installation, i.e. “water
fireman”. Safe transport fuel is ensured by the location of openings in fuel di
-
stribution pipes and the gap between these pipes. The movement of augers is
carried out with chain-driven gears through the gear motor. For safety reasons
the gate closing the fuel reservoir during the combustion of biomass in the bur-
ner must be sealed.
The controller is additionally secured against flashback to the fuel tank (hop-
per). The boiler is equipped with a
feeder pipe sensor measuring temperature
near the fuel tank
. When the temperature increases significantly (when the set
temperature is exceeded), the internal controller software automatically activates
procedures protecting the boiler against overheating or fire in the fuel feeder. The
alarm is activated and the feeder is started cyclically, moving fuel to the furnace
chamber to reduce the temperature of the feeder components.
For safety reasons, the fuel tank is separated from the boiler body – a naturally
ventilated space is provided (separate casings, thermal insulation of the exchan-
ger, ceramic sealant, and additional insulation of the feeder components).
The boiler is equipped with a tight fuel reservoir. In the reservoir cover there
is a limit switch that interrupts the feeder fuel and air fan operation at the time of
opening the cover. A message appears on the display:
“Cover open” and an
audible alarm (reminder and signal appear cyclically)
. When the fuel reservoir
cover is closed, the operation is resumed. Inside the cover there is an information
for the user about the presence and operation of the limit switch (reservoir cover
opening sensor).
FUSE
A controller is equipped with WT 6.3 A tube fuse links protecting the mains.
NOTICE:
Do not use a fuse of a higher value. Installation of a larger fuse may damage the
controller.
