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Electronic pellet burner controller – NPBC-V3C-K / NPBC-V4C-K / NPBC-V4E-K
If the controller detects a successful ignition the procedure will be terminated and the burner
proceeds to unfolding the fire.
Unfolding – Right after the ignition the burner doesn't switch immediately to full power, because
this might extinguish the unsteady fire. This menu sets the process of unfolding the fire on two
stages: burning of the first fuel dose and smooth unfolding. The upper field sets the fans' speed
while the first fuel dose is burning and the duration of this stage in seconds. The main auger does
not load new pellets while the first dose is burning. The bottom field sets for how long the burner
should work on P1 and P2 power levels before switching to the required power level according to
the boiler's temperature.
Settings for burning
of the first dose
After burning the first dose,
the burner will work 60 sec.
on P1 and 60 sec. on P2
P1, P2, P3 and Suspend power levels – the settings for these power levels are identical. Set the
active time of the auger to load a portion of pellets (Feed [Sec]) and the cycle (Cycle [Sec])
between two portions. The exact amount of the fuel, as well as the speed of the main fan and the
exhaust fan are important for the proper burning process.
Fuel number
Power level
The auger motor turns on
on every 30 seconds and
Works for 3 seconds
It is recommended to set P3 for the maximum possible power that the burner can achieve, P2 for
50% of P3 and P1 for 20% of P3. Thus, the controller can provide better power modulation between
20% and 100% by switching between the power levels. For example, if 75% of the power is
required, the controller will switch between P3 and P2 on equal time intervals. The switch time
User Manual / ver3.8
Page 3 of 33
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