LGK16.122A27 Siemens Flame Safeguard

Overview

The Siemens LGK16.122A27 is a high-performance flame safeguard and burner control unit designed for the supervision of gas, oil, or dual-fuel forced draft burners. Specifically engineered for medium to high-capacity applications, this controller is ideal for flash-steam generators and systems requiring continuous operation. It features a self-checking flame signal amplifier that ensures high safety standards by initiating a lockout in the event of a premature or missing flame signal or any internal fault that could simulate a flame.

Features

• Self-checking flame supervision circuit for continuous or high-demand intermittent operation
• Designed for use with QRA53 or QRA55 UV flame detectors or ionization probes
• Integrated air pressure supervision for verified air damper control
• Plug-in design allowing for easy installation and maintenance using AGM16 or AGM17 bases
• Robust construction with impact-proof and heat-resistant black plastic housing
• Lockout reset button with an integrated viewing window and status indicator lamp
• Safe-start mechanism that performs a safety check during every startup cycle

Specifications

• Model: LGK16.122A27
• Supply Voltage: AC 220 V – 240 V (50/60 Hz)
• Pre-purge Time (t1): 9 to 10 seconds
• Ignition Safety Time (TSA): 2 to 3 seconds
• Pre-ignition Time: 3 seconds
• Post-purge Time: 14.5 seconds
• Permissible Afterburn Time: 12 seconds
• Protection Rating: IP40 (when used with appropriate base)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.0 kg (2.2 lbs)

Applications

• Primary use in flash-steam generators and high-capacity industrial boilers
• Supervision of multi-stage or modulating burners in continuous operation
• Suitable for forced draft burners using gas, liquid fuel, or dual-fuel sources
• Used in commercial and industrial HVAC thermal process plants requiring high-reliability safety systems
• Integration by original equipment manufacturers (OEMs) into complex gas train and burner assemblies