Siemens Burner Controllers LME1 LME2 LME4 Series

Siemens Burner Controllers LME1 / LME2 / LME4 Series

Siemens LME Series gas burner controls are designed for the automatic startup, ignition sequencing, and flame supervision of single-stage and two-stage gas burners, as well as small- to medium-capacity gas burners operating intermittently, with or without a fan.

The controllers support flame supervision using an ionization probe, compatible QRA UV flame detectors with the AGQ3.xA27 ancillary unit, or QRC blue-flame detectors, depending on the selected model. Integrated operational and fault indication functions support burner diagnostics and maintenance.

Key Features

• Automatic burner startup and ignition sequence control
• Single-stage or two-stage gas burner control, depending on model
• Accurate control sequencing through digital signal processing
• Integrated undervoltage detection
• Air pressure switch supervision on applicable models
• Multicolor LED indication for operating and fault conditions
• Electrical remote reset capability
• Limited restart attempts for enhanced operational safety
• Controlled intermittent operation after a maximum of 24 hours of continuous operation

Available Series

• LME1 Series: Designed for single-stage gas burners. LME11 models support burner outputs up to 120 kW.
• LME2 Series: Designed for two-stage gas burners, with model-dependent operating sequences and functions.
• LME4 Series: Includes LME41 and LME44 controllers for specific gas burner control applications, including atmospheric burners.

Applications

• Industrial Gas Burner Systems
• Industrial Boiler Systems
• Industrial Heating Equipment
• Forced-Draft and Atmospheric Gas Burners, depending on model
• Gas-Fired Process Heating Equipment

Note: The exact model number, supply voltage, timing sequence, flame detector compatibility, and safety functions must be verified against the burner manufacturer's requirements before installation or replacement.