LME11.330C2 Siemens Burner Control

Overview

The Siemens LME11.330C2 is a high-performance burner control unit designed for the startup and supervision of 1-stage gas or gas/oil burners of small to medium capacity. Engineered for intermittent operation, this microcomputer-based controller ensures a safe and precise combustion process by utilizing ionization-based flame detection. It is a critical safety component used primarily in industrial and commercial HVAC systems, offering reliable monitoring and control of burner sequences to prevent hazardous operating conditions.

Features

• Microcomputer-based control with fixed time and phase programs for accurate signal handling
• Integrated ionization flame supervision for reliable flame detection during operation
• Multicolor LED status indicator for clear communication of fault and operational messages
• Electrical remote reset facility for efficient system management and lockout recovery
• Undervoltage detection and air pressure supervision with functional checks during startup
• Compact design with IP40 protection class rating, suitable for space-constrained installations
• Limitation of repetition cycles to enhance system safety and prevent unnecessary strain

Specifications

• Model: LME11.330C2
• Supply Voltage: AC 230 V (-15%/+10%), 50/60 Hz
• Burner Stages: 1-stage
• Pre-purge Time (t1): 30 seconds
• Safety Time (TSA): 3 seconds
• Pre-ignition Time (t3): 2 seconds
• Post-ignition Time (t3n): 2.5 seconds
• Power Consumption: 12 VA
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 0.16 kg (0.35 lbs)
• Protection Class: IP40 (when installed correctly)

Applications

• Supervision of 1-stage gas or gas/oil burners in intermittent operation
• Suitable for forced draft burners in commercial and industrial heating plants
• Integrated into burner systems by OEMs for automated combustion control
• Compatible with various burner brands including Riello, Bentone, Ecoflam, and Lamborghini
• Ideal for atmospheric burners and systems requiring ionization-based flame monitoring
• Used in boiler systems and thermal processing equipment up to 120 kW capacity