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Product description
Brenner E10.12000/14000 L-EUF
Product description
The type E 10.12000/14000 LE-UF burners
are oil burners for the combustion of EL fuel
oil to DIN 51603-1.
They are equipped with a free-flame burner
head for low-NOx combustion. Other com-
ponents of the burners are: combustion-air
fan, air-pressure monitor with test pushbut-
ton, air box with servomotor for the air dam-
pers, oil atomizer with high-pressure oil
pump, nozzle piping, return nozzle, oil
hydraulics block (with pressure monitors, val-
ves and control shaft), flexible pressure
tubing, and electrical igniter for fuel-oil opera-
tion. The burners can be linked up with an
electronic controller for interconnected ope-
ration, or can be equipped with their own
electronics for interconnected operation.
Speed control and O
2
control are options.
Important information
The burners should be installed and put into
operation by an engineering specialist who is
familiar with, and adheres to, the applicable
regulations and guidelines. Only the manu-
facturers, or persons appointed by them, are
permitted to do any repair work on monitors,
limiters and automatic firing systems as well
as any other safety-relevant equipment. Also
the replacement of original components is
the sole responsibility of specialists. The bur-
ner should be maintained at least once a
year by a duly qualified person. To this end,
a maintenance contract is recommended to
be concluded.
The burner must not be operated in rooms
exposed to aggressive vapours (e.g. sprays,
perchloroethylene, tetrachloro-hydrocarbon,
solvents) or dust. For a proper combustion-
air supply, the firing system zone shall be
sufficiently ventilated.
Oil-based operation
Start-up
When the firing system is turned on, the bur-
ner control circuit will close and the program
will be started. The burner will then be put
into operation as soon as the program has
been executed. This start-up process is con-
trolled and monitored by the automatic firing
unit (which is a component of the electronic
burner controller). The fan starts to run, and
the electric servomotor moves the closed air
damper into the pre-ventilation position so
that the burner can ventilate the combustion
chamber and exhaust with the required air
quantity.
After the required pre-ventilation time, the air
damper is moved into the ignition position.
Ignition is initiated, and the oil supply is
released. The solenoid valves open and let
the pressurized oil flow to the nozzle and
return line. The oil is then atomized, mixed
with the combustion air, and ignited. A pro-
per, stable flame will form within the safety
period. Until the end of this safety period, a
"flame" signal will be applied via the flame
monitor to the automatic firing unit, and is
maintained until normal shut-down. The bur-
ner start-up program is completed.
Operation
Following the formation of the flame, the bur-
ner will for a short time remain at the separa-
tely set ignition load level and is then
reduced to the minimum power level. The-
reafter, power control is released, i.e. the
power controller automatically regulates the
burner within the range from partial to full
load. Depending on the heat required, the
controller sends an "open" or "close" signal
to the servomotor to increase or reduce the
oil and air rate. In this "interconnected" con-
trol mode, both the oil control valve and the
air damper are set and, thus, the oil quantity
controlled in relation to the air quantity.
Thanks to this stepless volume control, the
burner can be set to any point between par-
tial and full load. When the burner is out of
operation, the air damper is closed so that no
cold air can flow through the burner, heat
generator and chimney.
General safety functions (oil)
If no flame forms after burner starting (fuel
release), the burner will shut down when the
safety period has elapsed (shut-down on
faults). Flame failure during operation and air
pressure failure during pre-ventilation or
during burner operation result in a fault shut-
down. Any failure of the flame signal after the
safety period and a flame signal during pre-
ventilation (external light control) result in a
fault shut-down, and the automatic firing unit
(component of the electronic burner control-
ler) is locked. Unlocking is possible immedia-
tely after the fault shut-down. The firing unit
will return to its start position and resume the
burner restarting process. A power failure
results in a normal shut-down of the burner.
After voltage recovery, the burner can be
automatically restarted provided no other
locks are active (e.g. one set by a safety
chain). As a rule, fuel supply is immediately
cut off when a trouble occurs.
