LME22.232C2 Siemens Burner Control

Overview

The Siemens LME22.232C2 is a high-performance, microcomputer-based burner control unit designed for the startup and supervision of one- or two-stage gas or gas/oil burners. Engineered for intermittent operation, this controller is suitable for burners of small to medium capacity with or without a fan. It serves as a reliable replacement for legacy models such as the LGB22.230A27, LGB22.230B27, and LMG22.230B27. The LME22.232C2 ensures optimal safety and precision through digital signal handling and integrated actuator control, making it a critical component for modern industrial and commercial heating systems.

Features

• Digital signal handling provides an accurate and repeatable control sequence
• Multicolor LED indicator provides clear status and error messages for simplified troubleshooting
• Integrated actuator control for precise management of the combustion air-to-fuel ratio
• Air pressure supervision includes a functional check of the air pressure switch during startup and operation
• Electrical remote reset facility allows for convenient system management
• Undervoltage detection ensures the system shuts down safely during power fluctuations
• Controlled intermittent operation triggers a safety shutdown after a maximum of 24 hours of continuous operation

Specifications

• Model: LME22.232C2
• Supply Voltage: AC 230 V (50/60 Hz)
• Power Consumption: Approximately 12 VA
• Prepurge Time (t1): 20 seconds
• Safety Time (TSA): 3 seconds
• Actuator Running Time: 20 seconds
• Pre-ignition Time: 2 seconds
• Flame Supervision: Ionization probe or UV flame detector (QRA… with AGQ3… ancillary unit)
• Protection Rating: IP40 (when installed correctly)
• Weight: Approximately 0.16 kg

Applications

• Supervision of one- or two-stage gas or gas/oil forced-draft burners
• Use in residential and commercial heating systems with small to medium heat output
• Integration into burner systems requiring linkageless actuator control for air dampers
• Suitable for systems requiring intermittent operation (at least one controlled shutdown every 24 hours)
• Compatible with various Siemens flame sensors for flexible fuel supervision options