LME71.901A1PKG Siemens Flame Safeguard

Overview

The Siemens LME71.901A1PKG is a comprehensive flame safeguard package designed for the supervision of multistage or modulating forced draft gas burners. This unit acts as a primary burner control, managing startup and continuous operation to ensure safety by monitoring the flame and controlling safety shutoff valves. The “PKG” designation indicates a bundled solution that includes the LME71.000A1 basic unit, the PME71.901A1 program module, and an AGG3.710 connector plug set. This specific configuration is engineered for burners utilizing a PWM (Pulse Width Modulation) fan motor.

Features

• Packaged assembly containing the basic unit, program module, and connector kit
• Integrated PWM fan motor control for burners with pneumatic ratio control
• Multicolor LED signal lamp providing status messages, program sequences, and fault notifications
• Digital signal handling for highly accurate and repeatable control sequences
• Electrical remote lockout reset facility for convenient system management
• Built-in 3 x 7-segment display for local service, error, and status information
• Undervoltage detection and air pressure supervision with functional checks during start and operation
• Integrated valve proving and Proof of Closure (POC) input for enhanced safety

Specifications

• Model: LME71.901A1PKG
• Mains Voltage: AC 120 V (+10% / -15%)
• Frequency: 50/60 Hz
• Power Consumption: Approximately 12 VA
• Protection Rating: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.2 lbs (0.54 kg)
• Approvals: UL, FM, CSA, CE
• Compatibility: Designed for gas burners with PWM fan applications

Applications

• Supervision of multistage or modulating forced draft gas burners
• Atmospheric burners of medium to large capacity in intermittent operation
• Industrial and commercial combustion systems requiring precise PWM fan control
• Burners with pneumatic air-gas ratio control
• Use in HVAC and boiler systems where safety shut-off and flame monitoring are critical