Siemens Burner Controllers LFL Series

• For gas, oil or dual-fuel forced draft burners of medium to high capacity
• For multistage or modulating burners in intermittent operation
  (at least one controlled shutdown every 24 hours)
• With checked air damper control
• Flame supervision :
  – with UV detectors QRA2 / QRA4 / QRA10
  – and ionization probe

The flame supervision is ensured via a flame detector QRA2 / QRA4 / QRA10 or ionization probe. The difference between 01 series and 02 series is the duration of the safety time for the pilot burner of burners equipped with pilot gas valves.

For atmospheric burners of high capacity, use the LFL1.638. **