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General| Brand | Siemens |
|---|---|
| Model | LEC1/8853 |
| Category | Control Unit |
| Language | English |
Details the application of the LEC1... control unit for automatic start-up and supervision of forced draught burners.
Explains the operational mode for single burner start-up and multi-flame supervision.
Lists the conditions that must be met before initiating the burner start-up sequence.
Details the step-by-step process of the burner start-up sequence, including timing and component activation.
Describes the start-up process when ignition spark supervision is enabled, noting specific exceptions.
Explains the sequence of operations after a controlled shutdown, including post-purge.
Details the unit's behavior after a lockout reset, initiating a potential immediate restart.
Explains how to interpret the information presented by the program indicator during burner start-up.
Details the requirements for detector current and cable length for different flame supervision types.
Lists specific detector types (ionization, UV, selenium) and their associated parameters.
Presents a summary of ordering types, supply voltages, and factory settings for the LEC1 control unit.
Shows connection examples for flame safeguards LAE10... and LFE10... with the LEC1 control unit.
Illustrates the timing sequences of the internal switching mechanism for various operational phases.
Details specific application features like adjustable prepurge time, ignition options, and safety times.
Covers aspects related to the physical installation, mounting location, and terminal connections.
Addresses procedures for unit adjustment, testing safety functions, and general troubleshooting.
Lists critical safety warnings, installation compliance, and precautions for handling the LEC1... unit.
Provides essential steps to follow before and during the adjustment process, including safety.
Identifies the specific adjustment elements (switches, cams) on the unit and their functions.
Details the procedure for adjusting the pre-ignition time using the switching mechanism cams.
Reiterates the safety requirement that adjustments must be made by authorized personnel only.
Describes the method for setting the prepurge time by adjusting specific cams on the switching mechanism.
Explains how to adjust the 1st safety time (t2) for operation without ignition spark supervision.
Details the procedure for setting the 1st safety time (t2z) when ignition spark supervision is used.
Explains how to adjust the 2nd safety time (t9) by setting the corresponding cam.
Illustrates connection for oil burners with supervised air damper control and LAE10... flame safeguard.
Shows a detailed breakdown of the air damper control sequence and timing.
Shows wiring and timing for gas burners with LFE10... flame safeguard and supervised air damper control.
Provides a detailed timing diagram for the air damper control sequence in gas burner applications.
Explains the symbols and codes used in the switching diagrams for gas burner control.
Explains a circuit for semi-automatic operation, used when full automation is not required.
Shows the dimensions and part number for the AGG 41041713 (EC) baseplate.
Gives specific instructions regarding loosening screws for unit cover and baseplate removal.
