Product Overview

The Siemens LME23 Burner Controller for Gas Industrial Burners is an advanced electronic burner control unit developed for the safe startup, monitoring, and shutdown of 2-stage gas burners operating in intermittent mode. Built with Siemens’ proven safety technology, it ensures consistent burner performance, enhanced operational safety, and compliance with international standards.

The LME23 is specifically designed for applications requiring blue-flame supervision, making it suitable for modern low-emission gas burners. With integrated safety monitoring, digital control sequencing, and reliable diagnostics, it is widely used in industrial and commercial combustion systems.

Key Features

• Designed for 2-stage gas industrial burners

• Blue-flame supervision using QRC1 flame detectors

• Safe ignition sequence with continuous flame monitoring

• Digital control logic for precise burner operation

• Air pressure supervision for enhanced safety

• Undervoltage protection to prevent unsafe operation

• Multicolor LED status and fault indication

• Electrical remote reset capability

• Intermittent operation with automatic safety restart

• Long service life up to 250,000 burner start cycles

Applications

• Industrial gas burners

• Boilers and steam generators

• Furnaces and thermal processing systems

• Process heating equipment

• Commercial and industrial heating installations

• OEM burner assemblies and control panels

Why Choose Siemens LME23 Burner Controller?

• Trusted Siemens quality and safety engineering

• Ensures stable combustion and reduced downtime

• High operational reliability in demanding environments

• Easy installation and maintenance with plug-in design

• Ideal replacement for legacy burner controllers

• Fully compliant with international burner safety standards

Technical Description

The Siemens LME23 Burner Controller is an automatic electronic control unit designed to manage the complete burner sequence of 2-stage gas burners, including pre-purge, ignition, flame supervision, and controlled shutdown. Operating in intermittent mode, it provides maximum safety through integrated flame detection, air pressure monitoring, and undervoltage protection.

The controller supports blue-flame detection using QRC1 sensors, ensuring accurate flame recognition and stable burner operation. Digital signal processing enables precise timing and reliable control, while the integrated multicolor LED allows quick fault diagnosis. Its compact plug-in construction makes it suitable for OEM installations and retrofit applications.

Technical Specifications