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The CONTROLLER SIEMENS LAL 2.25 230V OILON (Part / Model No: LAL2.25, Siemens BPZ:LAL2.25) is an automatic oil burner sequence programmer engineered by Siemens for startup control, flame supervision, and shutdown monitoring of multi-stage and modulating oil burners.
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CONTROLLER SIEMENS LAL 2.25 230V OILON Burner Sequence Control
The CONTROLLER SIEMENS LAL 2.25 230V OILON (Part / Model No: LAL2.25, Siemens BPZ:LAL2.25) is an automatic oil burner sequence programmer engineered by Siemens for startup control, flame supervision, and shutdown monitoring of multi-stage and modulating oil burners. Widely utilized in Oilon commercial and industrial heating equipment, the CONTROLLER SIEMENS LAL 2.25 230V OILON ensures safe ignition, pre-purging, and combustion control across yellow and blue flame atomizing oil burners.
Equipped with robust sequence timing mechanism, air pressure supervision, and built-in flame signal check capabilities, the CONTROLLER SIEMENS LAL 2.25 230V OILON operates at 230V AC supply. Mounted on plug-in bases across industrial boiler systems, it provides essential safety shutdown and fault diagnosis for oil burner plants, marine boilers, and thermal processing units.
Key Features of the CONTROLLER SIEMENS LAL 2.25 230V OILON
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Automatic Sequence Control: Controls pre-purge, ignition, fuel valve actuation, and post-purge cycles for oil burners.
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Flame Supervision Compatibility: Designed for use with Siemens QRB1 photoresistive sensors or RAR9 selenium photocells.
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Air Pressure Monitoring: Built-in circuit supervision for air pressure switches ensuring proper furnace ventilation prior to ignition.
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Fault Indication & Lockout Reset: Features clear visual lockout status position display with an integrated or remote lockout reset button.
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230V AC Standard Operation: Operates reliably on standard 220V–240V AC 50/60 Hz electrical supply lines.
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Plug-In Base Mounting: Fits standard Siemens LAL plug-in bases for fast panel assembly, swap-out, and maintenance.
Primary Applications
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Oilon Oil Burner Automation: Primary combustion control programmer on Oilon heavy and light oil burners.
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Industrial & Commercial Boilers: Flame control on high-capacity steam boilers, hot water generators, and thermal oil heaters.
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Marine Boiler Plants: Ignition timing and safety supervision for auxiliary shipboard boiler burner units.
Technical Specifications
| Parameter Category | Specification Details |
| Manufacturer / Brand | Siemens Building Technologies / Oilon |
| Part Number / Keyword | CONTROLLER SIEMENS LAL 2.25 230V OILON (LAL2.25) |
| Device Type | Automatic Oil Burner Control Unit / Sequence Programmer |
| Mains Voltage | 220 V AC to 240 V AC (+10% / -15%), 50/60 Hz |
| Power Consumption | Approx. 3.5 VA |
| Pre-Purge Time (t1) | Approx. 22.5 seconds |
| Pre-Ignition Time (t3) | Approx. 2.5 seconds |
| Safety Time (t2) | Approx. 5 seconds |
| Flame Detectors | QRB1 / QRB3 (Photoresistive), RAR9 (Selenium) |
| Degree of Protection | IP40 (When properly mounted) |
| Operating Temperature | -20°C to +60°C (-4°F to 140°F) |
| Weight | Approx. 1.00 kg |
Package Contents
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1 × CONTROLLER SIEMENS LAL 2.25 230V OILON Control Box Unit
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Product Instruction Sheet