LME73.811A1PKG Siemens Flame Safeguard

Overview

The Siemens LME73.811A1PKG is a comprehensive flame safeguard assembly designed for the startup and supervision of multistage or modulating forced draft burners and atmospheric gas burners. This package includes the LME73.000A1 burner control base unit, the PME73.811A1 program module, and a compatible connector plug kit. Engineered for intermittent operation, the LME73 system provides high-precision digital signal handling to ensure reliable safety interlocks and efficient combustion control in commercial and industrial HVAC applications.

Features

• Includes LME73.000A1 base unit, PME73.811A1 program module, and connector plug set
• Integrated actuator control for driving and proving positions during purge and ignition
• Electronic self-supervision with built-in 3 x 7-segment display for status and error diagnostics
• Accurate digital signal handling for precise control sequences
• Undervoltage detection and electrical remote lockout reset facility
• Multicolor LED signal lamp for clear operation and fault notifications
• Support for Proof of Closure (POC) and air pressure supervision
• Password-protected safety parameters for secure OEM configuration

Specifications

• Model: LME73.811A1PKG
• Supply Voltage: AC 120 V (+10% / -15%)
• Frequency: 50/60 Hz
• Power Consumption: Approximately 3 VA
• Protection Rating: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Designed Lifetime: 250,000 burner startup cycles (approx. 10 years)
• Input Signals: Analog (0 to 10 V DC, 0/4 to 20 mA, or 0 to 135 Ohm)
• Approvals: UL, FM, CSA, CE

Applications

• Supervision of multistage or modulating forced draft oil and gas burners
• Ideal for packaged burners and systems using a ratio regulator
• Suitable for medium to large-capacity atmospheric burners
• Industrial and commercial combustion plants requiring linkageless control
• Use with SQM4 or SQM5 actuators for closed-loop fuel-air ratio control
• Compatible with ionization probes and QRA series UV flame detectors for flame supervision