LME22.331C1 Siemens Burner Control

Overview

The Siemens LME22.331C1 is a high-precision, microprocessor-based burner control designed for the startup and supervision of 1- or 2-stage gas or gas/oil burners of small to medium capacity. Operating in intermittent mode, this controller ensures a safe combustion process by managing fixed time and phase programs. It is specifically engineered for systems that utilize an actuator for air-fuel ratio control and is typically integrated by original equipment manufacturers (OEMs) into industrial and commercial burner systems.

Features

• Microprocessor-controlled sequence for accurate and repeatable signal handling
• Integrated undervoltage detection to prevent operation during power fluctuations
• Air pressure supervision with functional testing of the air pressure switch during startup and operation
• Multi-color LED indicator providing clear status messages and fault diagnostics
• Electrical remote reset facility for efficient troubleshooting and system recovery
• Controlled intermittent operation, requiring a restart after a maximum of 24 hours of continuous run time
• Compact design compatible with legacy LGB and LMG burner control housing dimensions

Specifications

• Model: LME22.331C1
• Supply Voltage: AC 120 V (50/60 Hz)
• Pre-purge Time (t1): 30 seconds
• Safety Time (TSA): 3 seconds
• Actuator Running Time: 12 seconds
• Pre-ignition Time: 2 seconds
• Specified Time for Air Pressure Signal: 3 seconds
• Flame Supervision: Ionization probe or QRA flame detector with AGQ3 ancillary unit
• Protection Rating: IP40 (when installed with appropriate base)
• Weight: Approximately 0.35 lbs (0.16 kg)

Applications

• Supervision of 1- or 2-stage gas or gas/oil burners in intermittent operation
• Forced draft burners conforming to EN 676 and EN 230 standards
• Atmospheric burners with or without fan support
• Industrial and commercial boiler systems and thermal process plants
• Use in gas trains requiring linkageless actuator control for air-fuel modulation