Overview
The Siemens LME22.231C2 is a microprocessor-based burner control unit designed for the startup and supervision of 1- or 2-stage gas or gas/oil forced draft burners. Built for intermittent operation, this compact controller ensures safe burner performance by monitoring the flame and managing the sequence of operations. It is a digital replacement for legacy LGB and LMG series controls, offering improved accuracy and diagnostic capabilities for small to medium-capacity combustion systems.
Features
- Microprocessor-controlled for precise timing and consistent operation sequences
- Integrated undervoltage detection to prevent unsafe operation during power fluctuations
- Multi-color LED indicator provides real-time status and detailed fault diagnostic messages
- Air pressure supervision with a functional check of the air pressure switch during startup
- Electrical remote reset facility for convenient system recovery after a lockout
- Accurate digital signal handling ensures reliable flame supervision via ionization probe or QRA flame detectors
Specifications
- Model: LME22.231C2
- Operating Voltage: AC 230 V (+10% / -15%)
- Frequency: 50/60 Hz
- Power Consumption: 12 VA
- Pre-Purge Time (t1): 20 seconds
- Safety Time (TSA): 3 seconds
- Actuator Running Time: 12 seconds
- Protection Rating: IP40 (when properly mounted)
- Operating Temperature: -20 C to +60 C
- Weight: Approximately 160g
Applications
- Supervision of 1- or 2-stage gas or gas/oil burners of small to medium capacity
- Industrial and commercial fan-assisted gas burners conforming to EN 676 and EN 298
- Central heating systems and commercial boiler units
- Linkageless control systems requiring precise timing and integration with actuators
- HVAC and thermal process plants requiring intermittent burner operation


Reviews
There are no reviews yet.