LME22.131C2 Siemens Burner Control

Overview

The Siemens LME22.131C2 is a microprocessor-based burner control unit designed for the startup and supervision of 1- or 2-stage gas or gas/oil burners. Engineered for intermittent operation, this compact controller is suitable for small to medium-capacity burners with or without a fan. It serves as a modern, digital replacement for legacy Siemens LGB and LMG series controls, offering improved reliability through digital signal handling and integrated self-diagnostics. The unit ensures safe operation by monitoring flame signals and controlling the sequence of burner components, including fuel valves and actuators, in strict compliance with EN 298 standards.

Features

• Microprocessor-controlled sequence for accurate and repeatable timing
• Multicolored LED status indicator provides visual feedback for operational phases and fault diagnostics
• Integrated undervoltage detection to prevent unsafe operation during power fluctuations
• Air pressure supervision with functional checks during startup and operation
• Electrical remote reset facility for convenient system management
• Robust housing made of heat-resistant and flame-retardant plastic
• Digital signal handling ensures stable control even under varying environmental conditions
• Compatibility with ionization probes or QRA ultraviolet flame detectors (with ancillary unit AGQ3)

Specifications

• Model: LME22.131C2
• Supply Voltage: AC 230 V (50/60 Hz)
• Pre-purge Time (t1): 7 seconds
• Safety Time (TSA): 3 seconds
• Actuator Running Time: 12 seconds
• Power Consumption: Approximately 12 VA
• Protection Rating: IP40 (ensure adequate mounting for environmental protection)
• Operating Temperature: -20 C to +60 C
• Flame Supervision: Ionization probe or UV flame detector QRA with AGQ3.xA27
• Mounting: Requires a plug-in base (e.g., AGK11) for installation

Applications

• Startup and supervision of 2-stage forced draft gas burners
• Residential and commercial gas boiler systems
• Industrial gas-fired equipment and thermal process plants
• Hot air generators, gas ovens, and industrial dryers
• Atmospheric gas burners with or without fan assistance
• Replacement and upgrade for legacy Siemens LGB22.130A27 and LMG22.130B27 units