LME73.840A2PKG Siemens Flame Safeguard

Overview

The Siemens LME73.840A2PKG is a comprehensive flame safeguard package designed for the supervision and control of medium to high-capacity gas or oil burners. This industrial-grade burner control system is a microprocessor-based unit that ensures safe startup and intermittent operation. The “PKG” version is a pre-configured bundle that includes the LME73.000A2 basic unit, the PME73.840A2 program module, and a dedicated plug kit, providing a modular and flexible solution for combustion management.

Features

• Integrated actuator control for driving and proving positions during purge and ignition
• Advanced valve proving logic that can be parameterized for enhanced safety
• Multicolor LED signal lamp for clear indication of operating status and error messages
• Digital signal handling for high-precision control sequences and repeatable timing
• Modular design with a plug-in program module for easy customization and servicing
• Undervoltage detection and electrical remote lockout reset facilities
• Air pressure supervision with integrated function checks of the air pressure switch

Specifications

• Model: LME73.840A2PKG
• Mains Voltage: AC 230 V (50/60 Hz)
• Control Type: Microprocessor-based burner control
• Program Module: PME73.840A2 (Gas pilot ignition with one pilot valve)
• Operation: Intermittent (at least one controlled shutdown every 24 hours)
• Housing Material: Durable, heat-resistant plastic
• Operating Temperature: -20 C to +60 C
• Protection Rating: IP40 (when mounted)
• Weight: Approximately 5.0 lbs (package weight)

Applications

• Supervision of multistage or modulating forced draft gas and oil burners
• Industrial and commercial heating plants, boilers, and furnaces
• Atmospheric gas burners requiring advanced safety functions and valve proving
• HVAC systems utilizing SQM4 or SQM5 actuators for fuel-air ratio control
• Applications requiring gas pilot ignition with a single pilot valve configuration