LME71.112A1PKG-PRG1 Siemens Flame Safeguard

Overview

The Siemens LME71.112A1PKG-PRG1 is a microprocessor-based flame safeguard assembly designed for the supervision of 1- or 2-stage gas forced draft burners in intermittent operation. This specific package includes the LME71.000A1 base unit pre-programmed with the PME71.112A1 program module and includes the AGG3.710 connector plug set. Unlike other variants, the 112A1 configuration is specifically designed for applications requiring burner control without a purge cycle. It provides critical safety functions by managing the startup and operation of the burner, energizing safety shutoff valves, and monitoring the flame to ensure safe combustion.

Features

• Digital signal handling for accurate control sequences and timing
• Integrated BC interface for connecting external displays (AZL2) or PC software
• Multicolor LED signal lamp provides status notifications for operations, recycles, and faults
• Proof of Closure (POC) input allows for monitoring the gas valve position to ensure it is 100% closed
• Air pressure supervision with a function check of the air pressure switch during startup and operation
• Electrical remote lockout reset facility and undervoltage detection
• Compatible with ionization probes or UV flame detectors (such as QRA2, QRA4.U, or QRA10)
• Lockout reset button (info button) located directly on the unit

Specifications

• Model: LME71.112A1PKG-PRG1
• Base Unit: LME71.000A1
• Program Module: PME71.112A1 (Basic flame safeguard without purge)
• Mains Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approximately 12 VA
• Safety Class: I
• Degree of Protection: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.1 lbs to 1.2 lbs (Base unit only); Package weight approx. 2.0 lbs
• Approvals: UL, FM, CSA, and CE

Applications

• Supervision of medium to high capacity gas forced draft burners
• Industrial thermal process applications requiring 1- or 2-stage burner control
• Atmospheric burners of medium to large capacity
• HVAC and boiler systems where a non-purge startup sequence is required
• Monitoring flames via ionization rod or UV scanner in gas-fired equipment