
Operation phases (stages) - shown on the screen
Power D0
Power D1
Power D2
Power D3
Power D4
Power D5
Power D6
Shuting down stage
1st stage of shuting down stage, waiting for flame to dissapear and additional blowing for
set time, after which S7-2 stage starts. Flue gas fan works (rpm) according to stage from
which boiler entered S7-1 stage.
2nd stage of shutting down stage. Final flue gas fan blowing at. max rpms until factory
set time passes. After this stage grate cleaning stage starts (C0) and enters S7-3 stage.
Burner does not work/standby/pause. Boiler waits demand for start.
Stage after power supply failure and power supply return, el. heater is started and waits
for flame to appear (if flame appears -> PF1, if flame do not appears -> PF4)
El. heater switches off and enter PF2
Flame developing stage, enter PF3
Waits for flame disappearing, enter Pf4
Final flue gas blowing, boiler restarts or enters OFF stage, depending of the stage when
power supply failure occurs
Grate cleaning stage
D0
D1
D2
D3
D4
D5
D6
S7
S7-1
S7-3
PF1
PF2
PF3
C0
PF0
S7-2
PF4
Technical instructions CONTROL UNIT
BioTec Plus
14