LME41.052C2 Siemens Burner Control

Overview

The Siemens LME41.052C2 is a high-performance burner control unit designed for the startup and supervision of 1- or 2-stage gas burners or gas burners in intermittent operation. Engineered with digital signal handling for an accurate control sequence, this microcomputer-based controller ensures reliable flame monitoring and safety. It serves as a direct technical successor to the legacy LGB and LMG series burner controls, maintaining identical housing dimensions for easy integration or replacement. The unit is optimized for use with atmospheric burners and includes sophisticated safety features such as undervoltage detection and air pressure supervision.

Features

• Microcomputer-controlled sequence for high precision and repeatable timing
• Multicolored LED for clear indication of operational status and fault messages
• Integrated undervoltage detection to prevent unsafe operation during power fluctuations
• Air pressure supervision with a functional check of the air pressure switch during startup
• Electrical remote reset facility for convenient troubleshooting and operation
• Limitation of the number of repetitions (restarts) to enhance system safety
• Controlled intermittent operation ensuring a mandatory shutdown after 24 hours of continuous use
• Compatible with ionization probes or QRA flame detectors (via AGQ3 ancillary unit)

Specifications

• Model: LME41.052C2
• Supply Voltage: AC 230 V (+10% / -15%)
• Mains Frequency: 50 to 60 Hz (+/- 6%)
• Power Consumption: 12 VA
• Safety Time (TSA): Max 5 seconds
• Pre-purge Time (t1): Min 10 seconds
• Pre-ignition Time: 1 second
• Degree of Protection: IP40 (when properly mounted)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 160g

Applications

• Supervision of 1- or 2-stage gas burners in commercial and industrial HVAC systems
• Ideal for use with atmospheric gas burners with or without a fan
• Suitable for forced draft gas burners when paired with appropriate flame detectors
• Integration into burner systems by Original Equipment Manufacturers (OEMs)
• Direct replacement for legacy Siemens LGB and LMG burner control models in existing boiler and furnace installations