LAL2.25-110V Siemens Burner Control

Overview

The Siemens LAL2.25-110V is a high-performance oil burner control designed for the supervision and sequencing of oil atomizing burners of medium to large capacity. Engineered for universal use, this 110V AC control unit supports multistage or modulating burners in intermittent operation, requiring at least one controlled shutdown every 24 hours. It features integrated air pressure supervision to ensure safety by checking air damper control during operation and is housed in an impact-proof, heat-resistant plastic casing.

Features

• Universal design suitable for multistage or modulating burner systems
• Integrated air pressure supervision for verified air damper control
• Supports flame supervision via QRB1 photoresistive or RAR selenium photocell detectors
• Impact-proof and heat-resistant black plastic housing with a plug-in design for easy installation
• Lockout reset button featuring a viewing window with integrated warning lamp and fault indicator symbols
• Exchangeable unit fuse for simplified maintenance and protection

Specifications

• Model: LAL2.25-110V
• Operating Voltage: AC 100 V -15% to AC 110 V +10%
• Power Consumption: Approximately 3.5 VA
• Frequency: 50/60 Hz
• Prepurge Time (t1): 22.5 seconds
• Ignition Safety Time (TSA): 5 seconds
• Post-Purge Time (t6): 15 seconds
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 2.0 lbs (1000g for the control unit)

Applications

• Supervision of oil atomizing burners in medium to high-capacity industrial systems
• Control of yellow-flame burners requiring air pressure monitoring
• Use in stationary air heaters (WLE) complying with DIN 4794 standards
• Integration into burner systems for residential, commercial, and industrial HVAC applications
• Flash steam generator monitoring and control