The LFL1.148 is used for the supervision
of single- or two-stage atmospheric gas
burners of medium to high capacity.
The gas burner control has a connection
facility for an auxiliary fan or flue gas
Example: condensing boilers.
Flame supervision is ensured by means of
ionization current detector electrodes;
one electrode is used for the first stage
and one for the second stage.
Changeover takes place automatically
after release of the second fuel valve.
Landis & Staefa