LME73.830A2PKG Siemens Flame Safeguard

Overview

The Siemens LME73.830A2PKG is a comprehensive flame safeguard assembly designed for the startup and supervision of multistage or modulating forced draft gas or oil burners. This package includes the LME73.000A2 basic burner control unit, the PME73.830A2 program module, and a dedicated plug kit. Engineered for intermittent operation, this microprocessor-based system provides critical safety functions, including integrated actuator control and valve proving, making it an essential component for medium to large-capacity industrial and commercial combustion systems.

Features

• Integrated actuator control via 3-position controller or analog signal for precise fuel-air ratio management
• Built-in valve proving functionality to ensure gas train integrity before burner startup
• Multicolor LED and 3 x 7-segment display for clear indication of operating status and error codes
• Digital signal handling for highly accurate and repeatable control sequences
• Electrical remote lockout reset facility for efficient system management
• Comprehensive air pressure supervision with functional checks during startup and operation
• BC interface for seamless connection to AZL2 display units or PC-based service tools
• Robust design with a rated lifetime of approximately 250,000 startup cycles

Specifications

• Model: LME73.830A2PKG
• Components: LME73.000A2 (Control Unit), PME73.830A2 (Program Module), and Plug Kit
• Supply Voltage: 220 V AC (50/60 Hz)
• Operating Mode: Intermittent (at least one controlled shutdown every 24 hours)
• Flame Detection: Supports ionization probes, UV flame detectors (QRA series), and photoresistive detectors (QRB series)
• Protection Rating: Designed for integration into suitable industrial housings (IP40 when mounted correctly)
• Weight: Assembly weight approximately 5 lbs
• Temperature Range: -20 C to +60 C

Applications

• Supervision of 1-stage, 2-stage, or modulating forced draft burners
• Industrial heating systems and commercial boilers
• Process heating equipment requiring linkageless or mechanical fuel-air ratio control
• Applications requiring integrated gas valve proving for enhanced safety
• Integration by OEMs into gas-fired equipment following EN 676 standards