LME39.100C2 Siemens Burner Control

Overview

The Siemens LME39.100C2 is a microprocessor-based burner control unit designed for the startup and supervision of 1- or 2-stage gas or gas/oil burners. Engineered for small to medium capacity burners in intermittent operation, this controller ensures reliable flame monitoring and high safety standards. It features a digital signal processor for accurate program sequences and is housed in a compact, durable grey plastic casing. The unit supports parameterization via a BC interface (BCI), allowing for flexible configuration by original equipment manufacturers (OEMs).

Features

• Microprocessor-controlled digital signal handling for high precision and repeatable timing
• Multicolor LED for status indication and comprehensive fault diagnostics
• Integrated BC interface (BCI) for communication and parameterization via external tools
• Air pressure supervision with a functional check of the air pressure switch during startup
• Undervoltage detection that triggers safety shut-down if power falls below acceptable levels
• Limitation of repetitions to prevent unsafe restart attempts after a loss of flame
• Electrical remote reset facility for convenient system recovery
• Designed for 250,000 startup cycles, offering approximately 10 years of service life

Specifications

• Model: LME39.100C2
• Supply Voltage: AC 230 V (50/60 Hz)
• Power Consumption: 12 VA
• Waiting Time (tw): 2.5 seconds
• Prepurge Time (t1): 30 seconds
• Safety Time (TSA): Max 3 seconds
• Preignition Time (t3): 3 seconds
• Postignition Time (t3n): 2.3 seconds
• Operating Temperature: -20 C to +60 C
• Protection Class: IP40 (when properly mounted)
• Weight: Approximately 160 g

Applications

• Fan-assisted gas burners in commercial and residential boiler systems
• Industrial heating installations requiring 1- or 2-stage burner control
• Fan-assisted hot air generators and industrial oven systems
• Applications requiring flame supervision via ionization probe or UV flame detectors
• Suitable for atmospheric burners and forced draft burners complying with EN 298 standards