LME71.111A1PKG-PRG9 Siemens Flame Safeguard

Overview

The Siemens LME71.111A1PKG-PRG9 is a high-performance, microprocessor-based flame safeguard assembly designed for the supervision of multistage or modulating forced draft gas and oil burners. This preprogrammed package provides a complete solution for combustion safety, ensuring the controlled startup and continuous monitoring of industrial and commercial burners. As a fundamental safety component, it manages critical functions such as safety shut-off valve energization and air pressure supervision to prevent hazardous operating conditions.

Features

• Preassembled package includes the LME71.000A1 base unit, PME71.111A1 program module, and a connector plug set
• Integrated multicolor LED signal lamp provides clear status and error messages during operation
• Digital signal handling ensures an accurate and repeatable control sequence
• Built-in air pressure supervision with a function check of the air pressure switch during startup and operation
• Electrical remote lockout reset facility allows for efficient system management
• Proof of Closure (POC) input capability for monitoring gas valve position to ensure 100% closure
• Compatible with UV flame scanners and flame rods for versatile flame detection options

Specifications

• Model: LME71.111A1PKG-PRG9
• Mains Voltage: 120V AC (50/60 Hz)
• Control Series: LME71
• Protection Rating: IP40 (when installed)
• Operating Temperature: -20 C to +60 C
• Power Consumption: Approximately 12 VA
• Approvals: UL, FM, CSA, and CE approved
• Interface: BC interface for connecting display units (AZL2) or PC diagnostic tools

Applications

• Supervision of multistage or modulating forced draft oil and gas burners
• Ideal for medium to large-capacity atmospheric burners in intermittent operation
• Suitable for industrial thermal process applications requiring linkageless burner control
• Used in HVAC and boiler systems to manage ignition spark proving and main flame supervision
• Integration into gas trains where programmable purge and air-gas ratio control are required