Product Overview
The Siemens LAL series consists of microcontroller-based oil burner controls that manage the full combustion sequence of medium- to large-capacity oil atomizing burners operating in intermittent duty. These units handle startup sequencing, flame supervision, safety interlocks, and shutdown logic, and are intended primarily for OEM integration into heating systems where reliable and safe combustion control is required.
Different variants (e.g., LAL1, LAL2, LAL3) support burners with and without air pressure feedback and are configurable for multistage or modulating burner applications.
Key Features
Automatic Burner Sequencing: Controls startup, pre-purge, ignition, flame establishment, main firing, and shutdown in a safe, timed sequence.
Flame Supervision: Works with various flame detectors — photo-resistive (QRB series), blue-flame (QRC1), or selenium photocell (RAR9) — to monitor and confirm combustion.
Air Pressure Supervision (Optional): On variants like LAL2, the air damper operation and pressure switch signals are monitored for correct pre-purge and safe combustion conditions.
Multistage/Modulating Support: Suitable for burners with multiple firing stages or modulating control requirements.
Safety & Fault Indication: Includes lockout logic, reset capability, and status indicators for easier troubleshooting and maintenance.
Designed for OEM Integration: Robust design for embedding within industrial heating equipment.
Applications
Oil Atomizing Burners: Controls medium- to high-capacity forced-draft oil burners in intermittent heating duty.
Multistage Burners: Ideal for multistage or modulating burner platforms requiring precise sequence management.
Industrial & Commercial Heating: Widely used in industrial boilers, furnaces, and stationary heat generators where reliable flame supervision and safety sequencing are critical.
OEM Equipment: Designed for burner manufacturers to integrate into packaged heating systems with flame detection and safety requirements.
Why Choose This Product
Proven Reliability: Siemens burner controls like the LAL series are engineered for dependable performance in intermittent operation under industrial conditions.
Flexible Supervision Options: Supports different types of flame detection and air pressure supervision to match burner design needs.
Safety First: Integrated safety logic with lockouts, LED/status feedback, and controlled restart behavior protects both equipment and personnel.
OEM-Friendly Design: Standardized interfaces and configurable options make it straightforward to embed in complex burner systems.