Siemens LFL1.333

LFL1.333 Siemens Burner controls
  For gas, oil or dual-fuel forced draft burners of medium to high capacity
  For multistage or modulating burners in intermittent operation
  With checked air damper control Flame supervision
– with UV detectors QRA...
– and ionization probe
Burner control for oil burners or gas burners conforming to EN 298: 2012 Suitable for use with air heaters (WLE)
The LFL1... and this Data Sheet are intended for use by OEMs which integrate the burner controls in their products!