Control unit for double or multi-flame supervision of oil, gas or forced draught
oil/gas burners of any fuel throughput (for continuous or intermittent operation).
The LEC1... control unit is designed for the fully automatic start-up and supervision of
those forced draught burners with which the flame supervision should or must be carried
out by separate flame safeguards, e.g. with
Dual supervision (of the main flame or of the pilot and main flame by means of two
identical or different detectors).
Supervision of forced draught oil/gas burners (with different types of detectors
according to selected operating mode).
Multi-flame supervision (i.e. central and simultaneous control of the start-up and
supervision program for several burners, the flames of which, however, must be
individually supervised by one or two flame safeguards each).
The following flame safeguards are available:
LAE10... for the supervision of oil burners with active selenium photocell sensor RAR... in
LFE10... for the supervision by means of ionization field (gas burner) or with UV-
detectors QRA... (gas, oil or dual fuel burners, with or without ignition spark supervision)
in intermittent operation.
LFE50... for the supervision with UV-detectors QRA50.../51... (gas, oil or dual fuel
burners) in intermittent or continuous operation.
All devices comply with the relevant European standards for oil, gas and forced draught
burners of any fuel throughput.
The LEC1... can control the following burner plant components: fan motor, flue gas fan,
air damper, ignition transformer, one to three fuel valves, the load controller and an
external fault signaling device.