Sunsystem BURNit PelleBurn PLB 15 Instructions D'installation Et D'exploitation page 5

TECHNICAL PASSPORT INSTALLATION and OPERATION MANUAL
• Efficient. To keep from losing heat into the
ambience, the boiler is insulated on the outside
by 100 mm high-temperature wool. With its
state-of-the-art combustion control system
and cylindrical body design construction the
PelleBurn boiler achieves efficiency rate of as
much as 91%.
2.2. Design of pellet burner Pell
The burner is made of high-quality stainless steel
able to withstand temperatures of up to 1150°С. The
burner must be installed on a heating boiler.
The burner consists of two parts: combustion
chamber tube and external tube with sheet metal
mantle. Longitudinally, under the housing, there are
blow chamber, fuel ignition heater, fan and power
supply. On the upper part of the burner there is a
feeder chute to which the pellet auger is attached. The
combustion chamber consists of two tubes:
Ember resistant steel tube inside the burner with
holes for air intake along its entire length, opening
for the hot air from the fuel ignition heater, opening
for photosensor.
Outer stainless steel tube. Between the two tubes
there is a gap which provides for free circulation of
the air necessary both for cooling and oxygen supply
into the combustion chamber.
The feeder chute allows 360° rotation for its best
convenient positioning when connecting the pellet
auger to the hopper.
Diagram 2. Design of Pellet Burner Pell
Other elements of the burner are
• Internal auger.
• Dry contactless resistance heater assuring ignition
of fuel.
• Pneumatic cleaning system of the combustion
chamber.
• Feed fan, smooth regulation (0% to 100 %).
• Telescopic pull-out system of burner Pell for easy
maintenance.
2.3. Safety devices of pellet boiler-and-burner
A complex of safety devices provide for the safety of
the appliance. Air-feed fan, step –regulated, controls
the combustion according to energy needs and is
maintained in optimal working order. Independent
STB thermostat shut-off the burner and shut off the
air feeding in the combustion chamber in case of
rising boiler temperature.
/see page 59/
• Elbow-shape feeder chute. The geometrical shape
of burner feeder chute prevents backfire entry
from burner into pellet hopper. The flexible tube is
melted at a temperature above 80°C. Thus prevent
access to the hopper of the fire.
• Thermostatic protection (80°С). The thermostatic
protection is fitted on the feeder chute. When
the surface of the feeder chute reaches 80°С, the
control stops the feeding of pellets into the burner
and signals for fault (BB Alarm).
• Fuse. In case of electrical fault in the system of the
burner (short circuit, current overload, etc.), the
overload is borne by the electrical fuse fitted on the
main control panel of the burner (10 А).
• Power interruption. Innovative controller. In case
of power interruption, all parameter settings are
stored in the memory of the controller. Upon the
subsequent restart of the burner, the controller
resumes the execution of the program from the
point when the power interruption occurred.
2.4. Design of pellet auger
The auger transports pellets from fuel hopper to
burner. Auger elements are: auger pipe, auger hose,
motor, conveyor belt for moving the pellets.
Diagram 3. Design of pellet auger
/see page 59/
2.5. Design of fuel hopper FH 500
Pellet hopper, designated to serve biomass
pellet-fired boilers. Pellet hopper design allowing
installation by choice on either side of boiler.
Made of cold-rolled steel sheets with PVC coating.
Comfortable pellet charging hatch. Pellets inside
hopper are fed into auger in order of reception.
Precision leveling of hopper possible via screw-in legs.
Elevated foundation with drain holes and container
for separation and removal of pellet powder.
The hopper capacity is determined using as
calculation base the daily or weekly fuel consumption
rate of burner. The pellet hopper usable volume of
500 litters allows charging of 280-300 kg of pellets
with diameter 6 mm, and top-up/refill once a week
(for burner of rated power up to 40 kW).
Diagram 4. Design of fuel hopper FH 500
/see page 59/
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