Thermax Boiler Sequence Controller Siemens LAL3.25 & Control Box 

Technical Specifications & Features 

• Product Name: Thermax Boiler Sequence Controller Siemens LAL3.25 / Siemens Burner Control Box

• Brand & Manufacturer: Siemens (OEM for Thermax Boilers)

• Model Range: LAL Series (LAL3.25)

• Burner Compatibility: Medium to High Capacity 2-Stage or Modulating Oil, Gas & Dual-Fuel Burners

• Operating Voltage: AC 230V (+10% / -15%), 50/60 Hz

• Power Consumption: Approx. 3.5 VA

• Pre-Purge Time (t1): 30 Seconds

• Safety Time (TSA): 5 Seconds

• Pre-Ignition Time (t3): 2.5 Seconds

• Flame Sensor Compatibility: Siemens QRB1 Photoresistor or QRA2 / QRA10 UV Flame Detectors

• Fuel Type Compatibility: Light Oil, Heavy Oil (Furnace Oil), Natural Gas, LPG, PNG & Dual-Fuel Systems

• Primary Application: Thermax Steam Boilers, Thermic Fluid Heaters, Hot Water Generators & Heavy Industrial Processing Plant Firing

• Core Function: Multi-stage/modulating sequence timing, air damper actuator drive supervision, air pressure switch monitoring, and UV/photoresistor flame detection

Applications & Key Benefits 

• Thermax Boiler Compatibility: Direct plug-and-play fitment for Thermax steam boilers and thermic fluid heaters equipped with Siemens LAL series control systems.

• 30-Second Pre-Purge Cycle: Provides a fast 30-second pre-purge cycle (t1) to thoroughly vent industrial boiler combustion chambers prior to ignition.

• 5-Second Lockout Protection: Rapid 5-second safety time (TSA) instantly isolates fuel solenoid valves upon ignition failure or unexpected flame loss.

• Air Damper & Actuator Control: Directly commands motor-driven air damper actuators for high/low fire or modulating burner operations with mandatory damper position verification.

• Dual Flame Sensing Versatility: Supports both QRB1 photoresistor sensors (for oil burners) and QRA series UV detectors (for gas and dual-fuel applications).

• Heavy-Duty Plug-In Base Construction: Mounts directly onto standard Siemens plug-in wiring bases for quick installation, field replacement, and minimal maintenance overhead.

Buy Thermax Boiler Sequence Controller LAL 3.25 

Looking for ready stock and competitive pricing for the Thermax Boiler Sequence Controller Siemens LAL3.25 or Siemens Burner Control Box? Contact Aditya Enterprises today for instant price quotes and rapid dispatch across India.

• Company: Aditya Enterprises (Aditya Burner)

• Call / WhatsApp: +91 9731857001

• Location: Bengaluru, Karnataka, India

Shop the Siemens LAL 3.25 Sequence Controller for Thermax boilers and large-scale oil burners. Reliable supplier of genuine Siemens LAL series parts with ready stock and fast Pan-India shipping. Contact us for competitive pricing today.