LME41.071C2 Siemens Burner Control

Overview

The Siemens LME41.071C2 is a microprocessor-based burner control designed for the startup and supervision of 1-stage gas burners in intermittent operation. It is a critical safety component used primarily in small to medium-capacity atmospheric burners. The unit provides fully integrated control, replacing legacy LGB and LMG series controllers with the same housing dimensions for easy installation. It utilizes digital signal handling to ensure an accurate control sequence and includes electronic self-supervision to maintain safe combustion processes in industrial and commercial heating applications.

Features

• Microprocessor-controlled sequence for high precision and repeatable performance
• Multicolor LED provides clear indication of operational status and fault messages
• Integrated undervoltage detection ensures the burner remains in a safe state during power fluctuations
• Electrical remote reset facility for convenient system recovery after a lockout
• Designed for intermittent operation, requiring a controlled shutdown at least once every 24 hours
• Compatible with ionization probes or QRA flame detectors with an AGQ3 ancillary unit
• Robust housing design with a protection rating of IP40 when properly mounted

Specifications

• Model: LME41.071C2
• Mains Voltage: AC 230 V (+10% / -15%)
• Mains Frequency: 50 to 60 Hz
• Power Consumption: 12 VA
• Waiting Time (tw): Max. 2.5 s
• Prepurge Time (t1): Min. 10 s
• Safety Time (TSA): Max. 10 s
• Post-ignition Time (t3n): Approx. 9 s
• Pre-ignition Time (t3): Approx. 1 s
• Weight: Approximately 160 g
• Operating Temperature: -20 C to +60 C

Applications

• Supervision of 1-stage atmospheric gas burners in commercial and industrial HVAC systems
• Ideal for use in gas-fired boilers, furnaces, and thermal process plants
• Integrated into original equipment manufacturer (OEM) burner packages
• Suitable for forced draft burners when used with appropriate flame detection accessories
• Replacement for legacy Siemens LGB and LMG burner controls in existing gas train assemblies