Siemens LFE 10 Flame Detector Relay Gas 220/240v 50hz
Flame safeguards for burners with intermittent operation.
For safety reasons - self-test of flame supervision circuit, etc. - at least one controlled
shutdown is required every 24 hours.
For flame supervision systems for continuous operation, refer to data sheet 7783.
The LFE10 is used for the supervision and indication of gas and oil flames.
The LAE10 is designed for the supervision of oil flames in connection with selenium
photocell detectors RAR...
The LFE10 is suited for the supervision of gas flames and luminous or blue-burning oil
flames in connection with UV detectors QRA... or a flame rectification probe.
Both types of flame safeguards are used primarily in conjunction with the LEC1 burner
control on the following applications:
– Dual-supervision of burners
Supervision of the main flame or of the pilot and main flame by two identical or different types of flame detectors
– Supervision of forced draught oil / gas burners
Supervision of the flame with different types of detectors, depending on the operating mode
– Multi-flame supervision
Plants with several burners whose flames must be supervised individually by one or several detectors, whose startup and supervision, however, should or must be carried out centrally and simultaneously by only one burner control
– The flame safeguards can also be used in connection with other types of burner controls provided the given combination and selected circuitry do not impair the burner control’s safety functions
– The flame safeguards are also used as flame indication units in combustion plant with manual startup