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2.
Operation
2. Operation
2.1 Functional description
The BioWIN XL pellet boiler and the Modular Energy System MESplus combine to form a perfect unit. The
BioWIN XL automatically ignites when the control system signals a heating requirement. Following “purging”
(a safety function), ignition starts and the pellet metering auger turns on. The burner pot is automatically filled
with pellets. When flame formation has been detected (by the thermocontrol sensor), the boiler/heater enters
flame stabilization mode and then control mode (modulation mode) and keeps to the specified boiler/heater tem-
perature setpoint (between 140 °F and 185 °F / 60 °C and 85 °C). The boiler/heater enters burnout mode if the
heat consumed drops below the minimum nominal thermal output or no heating requirement is signaled by the
control system. The ID fan continues to run until the burner pot has cooled down.
Fully automated pellet feed:
The pellet feed uses a maintenance-free suction turbine to fill the BioWIN XL integral fuel hopper fully automati-
cally with pellets from a pellet storage room or storage container. The pellet feed is switched on by the lower fill
level switch (proximity switch) in the integral fuel hopper or at the end of the enable time or the beginning of the
start time, and runs for as long as the integral fuel hopper is full. Filling is not started if the boiler is in heating
operation or the feed has been blocked by the control unit (outside the enable time, e.g., at night). If the boiler is
operating when filling is necessary, the boiler switches to burnout mode.
Switching between the suction probes is fully automatic. The system changes to the next suction probe after the
integral fuel hopper has been filled a certain number of times. This means the storage room is emptied as evenly
as possible.
Fully automatic heating surface cleaning:
A motor moves the heating surface cleaning system vertically and the heating surfaces remain clean.
Fully automatic ash conveyor:
During fully automatic ash removal, the ash is transported out of the combustion chamber and the heating sur-
faces into the side ash container under the integral fuel hopper using a motor and auger.
