LME44.056C2 Siemens Burner Control

Overview

The Siemens LME44.056C2 is a microprocessor-based burner control unit designed for the startup and supervision of 2-stage gas burners in intermittent operation. It is specifically engineered for use with fan-assisted or atmospheric burners of small to medium capacity. This advanced controller serves as a direct replacement for the legacy LGB41.255A27 series, offering enhanced reliability through digital signal handling and integrated air pressure supervision. It features a multicolor LED for clear operational and fault status messaging, ensuring safe combustion cycles by monitoring flame presence and sequence timing.

Features

• Accurate control sequence thanks to digital signal processing
• Multicolor LED display providing real-time operational status and detailed fault diagnostic codes
• Integrated air pressure supervision with functional checks during startup and operation
• Undervoltage detection to prevent unsafe operation during power fluctuations
• Electrical remote reset facility for easier maintenance and system recovery
• Controlled intermittent operation with a mandatory shutdown every 24 hours of continuous use
• Robust design compliant with EN 298 standards for automatic burner control systems

Specifications

• Supply Voltage: AC 230 V (+10% / -15%)
• Frequency: 50/60 Hz
• Power Consumption: 12 VA
• Safety Time (TSA): 5 seconds
• Pre-purge Time (t1): 9 seconds
• Pre-ignition Time (t3): 2 seconds
• Waiting Time (tw): 16 seconds
• Degree of Protection: IP40 (when properly mounted)
• Temperature Range: -20 C to +60 C
• Weight: Approximately 0.16 kg
• Flame Supervision: Ionization probe, QRB, or QRC detectors

Applications

• Supervision of 2-stage gas burners with or without combustion air fans
• Medium to large-scale industrial heating systems and commercial boilers
• Fan-assisted gas burners in accordance with EN 676
• Atmospheric gas burners of small to medium capacity
• Hot air generators and thermal processing plants requiring precise fuel-air ratio sequences