Siemens LME11.330C2 Burner Control

Overview
The Siemens LME11.330C2 is an automatic burner control unit designed for the startup, supervision and safety shutdown of one-stage gas burners (or burners in intermittent operation) with ionization flame recognition. It features undervoltage detection, air-proving supervision, multi-colour LED fault/status indication and is supplied as a plug-in module (without base). It meets EN 298 and is suitable for various industrial/commercial burner installations.

Key Features

• Mains voltage: approx. 230 V AC, 50/60 Hz

• Power consumption: ~12 VA

• One-stage burner control (single fuel stage) with ionization flame detection

• Undervoltage and air pressure switch supervision functions

• Multicolour LED for status and fault indication

• Lifetime expectancy: approx. 250,000 burner start-up cycles under normal conditions

• Compact plug-in housing for simple replacement in existing bases

Main Benefits

• Ensures safe and reliable control sequence for burner start-up and shutdown (pre-purge, ignition, flame supervision, post-purge)

• Simplifies service and replacement in burner systems by standardised module format

• Compatible with existing Siemens/Landis & Gyr burner control installations and bases

• Visual diagnostic indication helps reduce maintenance downtime

• Trusted brand and widely available spares support

Technical Highlights

• Design approved for one-stage intermittent gas burners in accordance with EN 298

• Suitable for forced-draught burners with ionization flame sensor or blue-flame detector (with appropriate adapter)

• Ambient temperature: –20 °C to +60 °C

• Electrical protection class: IP40 (when mounted correctly)

• Repetitions for lost flame: up to 3 attempts then lock-out for this model type

Installation & Safety Notes

• Installation must be done by qualified personnel in compliance with relevant national burner/gas safety standards.

• Use the correct plug-in base and ensure all wiring is correct including neutral, live, flame detector and air switch signals.

• Check wiring lengths and separation of ignition cables and detector cables to avoid interference.

• After any work, perform a full safety check and functional test as described in the Siemens installation instructions.

• When replacing older models (e.g., LGB or LMG series) with this model, ensure compatibility of accessories and wiring base.

Applications

• One-stage commercial or light-industrial gas burners

• Replacement/upgrade of existing Siemens/Landis burner control modules

• Burner installations requiring reliable flame supervision with ionization probe

• Systems where compact control unit and diagnostics are required