CC1N7451en
20.11.2017
Building Technologies Division
7
451
Burner Controls
LFL1...
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 QRA2 / QRA4 / QRA10
– and ionization probe
The LFL1... and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products!
Use
Control and supervision of forced draft burners of direct spark flame or interrupted
pilot construction
For medium to high capacity
For intermittent operation (at least one controlled shutdown every 24 hours)
For universal use with multistage or modulating burners
For use with stationary air heaters (WLE)
For use with dual-fuel burners
Type-tested and approved in accordance with DIN EN 298
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.
