LGK16.333A17 Siemens Flame Safeguard

Overview

The Siemens LGK16.333A17 is a high-performance burner control box designed for the supervision of gas, oil, or dual-fuel forced draft burners of medium to high capacity. Engineered for continuous operation, this flame safeguard is a critical safety component for multistage or modulating burners. It features an integrated self-checking flame signal amplifier that ensures the highest level of safety by initiating a shutdown not only in the case of a missing flame signal but also if any failure occurs within the detector, cables, or amplifier itself. This makes it an ideal choice for industrial and commercial combustion plants where safety and reliability are paramount.

Features

• Self-checking flame supervision circuit for maximum safety during continuous operation
• Suitable for multistage or modulating burners
• Integrated air pressure supervision for checked air damper control
• Designed for 250,000 burner startup cycles, providing approximately 10 years of service life
• Impact-proof and heat-resistant black plastic housing
• Lockout reset button with integrated warning lamp and indicator for easy troubleshooting
• Compatible with various flame detectors including QRA53, QRA55, and ionization probes

Specifications

• Model: LGK16.333A17
• Supply Voltage: AC 100-110 V (50/60 Hz)
• Power Consumption: 3.5 VA
• Pre-purge Time (t1): 31.5 seconds
• Safety Time (TSA): 3 seconds
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.0 kg (2.2 lbs)
• Approvals: CE certified and tested to EN 298:2012 standards

Applications

• Supervision of high-capacity gas, oil, or dual-fuel forced draft burners
• Continuous operation burners in industrial plants and commercial buildings
• Stationary air heaters (WLE) and steam boilers
• Complex combustion systems requiring self-checking flame supervision
• Plants complying with TRD411 and TRD412 safety specifications for steam boilers