LFL1.622-110V Siemens Gas Burner Control

Overview

The Siemens LFL1.622-110V is a high-performance burner control designed for the supervision and sequencing of gas, oil, or dual-fuel forced draft burners. Engineered for medium to high capacity systems, this electro-mechanical flame safeguard provides critical safety functions, including automatic ignition and continuous flame monitoring. It is designed for intermittent operation, requiring at least one controlled shutdown every 24 hours. The LFL1.622-110V is globally recognized for its reliability and is widely used by OEMs for integration into industrial and commercial burner systems.

Features

• Comprehensive flame supervision using UV detectors (QRA series) or ionization probes
• Integrated sequencer, flame amplifier, and purge timer in a single compact unit
• Self-checking ultraviolet (UV) sensor functional test for enhanced safety
• Visual sequence indicator to monitor burner startup and operation phases
• Checked air damper control ensuring proper combustion air flow before ignition
• Proven air switch, high fire purge, and low fire ignition interlocks
• Lockout alarm terminal and local/remote reset capabilities
• Durable housing made of impact-proof and heat-resistant plastic

Specifications

• Model: LFL1.622-110V
• Supply Voltage: AC 110 V (+10% / -15%) at 50/60 Hz
• Pre-purge Time (t1): Approximately 65 seconds
• Safety Time (TSA): 2 seconds
• Pre-ignition Time: 4 seconds
• Post-purge Time: 12 seconds
• Power Consumption: Approximately 3.5 VA
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 2.2 lbs (1.0 kg)
• Approvals: CE, UL, FM, CSA, EAC, and RoHS compliant

Applications

• Supervision of forced draft gas, oil, or dual-fuel burners
• Control of multistage or modulating burners in industrial settings
• Integration into stationary air heaters (WLE) and flash steam generators
• Use in medium to high capacity commercial boiler systems
• Suitable for both new installations and retrofit projects in HVAC and combustion systems