The Siemens LME41 / LME44 Burner Controller for Gas Industrial Burners is a microprocessor-based automatic burner control system developed for the startup, control, supervision, and shutdown of gas burners operating in intermittent mode. These controllers are suitable for forced-draft burners with or without fans and are widely used in industrial and commercial combustion systems.

The LME41 / LME44 series manages all critical burner functions including pre-purge, ignition, flame monitoring, safety shutdown, and post-purge, ensuring high safety standards and stable burner performance. Flame supervision is carried out using an ionization probe or UV flame detectors, providing accurate flame detection even under demanding operating conditions.

Designed for OEM burner manufacturers and industrial installations, these controllers feature digital burner sequence control, air pressure supervision, undervoltage protection, and restart limitation, enhancing system safety and operational reliability. The built-in multicolor LED indicator enables quick status checks and fault diagnostics, reducing downtime and maintenance effort.

Key Features

• Suitable for 1-stage and 2-stage gas burners

• Supports ionization probe and UV flame detectors

• Digital burner control sequence for precise operation

• Air pressure switch supervision with functional checks

• Undervoltage protection for electrical safety

• Restart limitation to prevent unsafe repeated ignition

• Multicolor LED indication for operating and fault status

• Electrical remote reset capability

• Intermittent operation with automatic safety shutdown

• BC interface for diagnostics and parameterization

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

Applications

• Industrial gas burners

• Boilers and steam generators

• Furnaces and thermal processing equipment

• Forced-draft burner systems

• Commercial and industrial heating installations

• OEM burner assemblies and control panels

Why Choose Siemens LME41 / LME44 Burner Controller?

• Proven Siemens safety and reliability

• Complies with DIN EN 298 burner control standards

• High operational stability in industrial environments

• Flexible compatibility with multiple flame detectors

• Easy installation and servicing with plug-in design

• Ideal replacement for older LME / LGB burner controllers

Technical Description

The Siemens LME41 / LME44 Burner Controller is an automatic electronic control unit designed for the safe supervision and control of gas burners in intermittent operation. It supports single-stage and two-stage burner configurations, managing the complete burner sequence from pre-purge to controlled shutdown.

Flame detection is performed via ionization current measurement or UV flame sensors (QRA series with ancillary units), ensuring reliable flame supervision. The controller integrates digital logic, air pressure monitoring, and undervoltage detection, enhancing system safety and combustion stability.

A multicolor LED system provides real-time indication of operating states and fault conditions, allowing fast troubleshooting. Parameter settings and diagnostics can be accessed via the BC interface, making the LME41 / LME44 suitable for modern industrial burner systems and OEM applications.

Technical Specifications