The LFL… is a compact electro-mechanical primary flame safeguard control designed to provide burner sequencing, automatic ignition and continuous flame monitoring for gas, oil, and dual fuel, single burner applications.
The LFL… is applicable for on-off, multistage or modulating burners. The LFL… is designed for direct main burner ignition, intermittent or interrupted pilot operation.
The LFL… integrates the flame amplifier, purge timer and sequencer in a single control. Flame supervision is accomplished using UV sensor or flame rod detection.
Gas burner controls:
- for gas, oil or dual-fuel forced draft burners of medium to high capacity
- for multistage or modulating burners in intermittent operation; for safety reasons, at least one controlled shutdown must take place every 24 hours
- with checked air damper control
-
flame supervision
- with UV detectors QRA...
- with ionization probe
- Primary flame safeguard control
- Visual sequence indication
- Optional combustion air blower control
- Optional postpurge
- Preignition interlock
-
Continuous flame monitoring,
- including extraneous light detection
- UV sensor functional test
- Proven air switch function
- Proven high fire purge interlock
- Proven low fire ignition interlock
-
Direct main burner ignition,
- intermittent or interrupted pilot operation
- Integrated flame amplifier
- UV sensor or flame rod detector
- Lockout alarm terminal
- Local and optional remote reset
-
Burner off – economy position
- (fully closed air damper interlock)
- Unit fuse and spare fuse provided
Use:
- Control and supervision of forced draft burners of expanding flame and interrupted pilot construction
- For medium to high capacity
- For intermittent operation (at least one controlled shutdown every 24 hours)
- Universally applicable for multistage or modulating burners
- For use with dual-fuel burners
- For use with stationary air heaters
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, LFL1.638 is the type to be employed. For burner controls for use with burners in continuous operation, refer to Data Sheet 7785 (LGK16...).
