LGK16.335A17 Siemens Flame Safeguard

Overview

The Siemens LGK16.335A17 is a high-performance flame safeguard and burner control unit designed for the supervision of gas, oil, or dual-fuel forced draft burners. Engineered for medium to high-capacity applications, this controller is specifically built for continuous operation, making it a vital safety component for industrial and commercial combustion plants. It features a sophisticated self-checking flame signal amplifier that ensures the highest level of safety by detecting faults in the detector, cables, or the amplifier itself, thereby preventing hazardous conditions during high-demand burner cycles.

Features

• Self-checking flame supervision circuit initiates safety actions in the case of missing flame signals or internal hardware failures
• Designed for continuous operation exceeding 24 hours, as well as intermittent operation
• Air pressure supervision integrated for checked air damper control
• Multi-stage or modulating burner control capabilities
• Robust plug-in design housed in impact-proof and heat-resistant black plastic
• Built-in_fault lockout indicator, warning lamp, and manual reset button
• Compatible with UV flame detectors (QRA53/QRA55) and ionization probes

Specifications

• Model: LGK16.335A17
• Supply Voltage: AC 100-110 V (50/60 Hz)
• Power Consumption: 3.5 VA
• Pre-purge Time (t1): 37 seconds
• Safety Time (TSA): 2.5 seconds
• Pre-ignition Time: 5 seconds
• Post-purge Time: 15 seconds
• Protection Rating: Designed for terminal base mounting (AGM17)
• Weight: Approximately 1.03 kg (2.27 lbs)
• Standards: CE certified, compliant with EN 298 for gas-fired appliances

Applications

• Supervision of multi-stage or modulating oil and gas burners of medium to high capacity
• Use in industrial combustion plants where self-checking flame systems are mandatory
• Continuous operation systems such as steam boilers (complying with TRD411 and TRD412)
• District heating plants and large-scale HVAC boiler sequencing systems
• Suitable for forced draft burners and air heaters (WLE)