Milwaukee, WI: 414.332.6000 l Eagan, MN: 651.890.0720

Siemens LFL and LAL Flame Safeguards

Siemens LFL and LAL Flame Safeguards

  • For gas, oil or dual-fuel forced draft burners of medium to high capacity
  • For multistage or modulating burners in intermittent operation
  • With checked air damper control
  • Flame supervision
    • with UV detectors QRA…
    • and ionization probe
  • Burner control for oil burner or gas burners
  • Approvals: UR, only with QRB, CSA Certified, CE, EAC and RoHS

Description

Siemens LFL and LAL burner controls provide burner sequencing and flame monitoring for the supervision of individual gas, oil, or dual fueled burners. With an incomparable record for safety and reliability, the economical LFL continues to be one of the most popular, globally approved flame safeguard controls.

LFL Application:

  • Control and supervision of forced draft burners of direct spark flame or interrupted pilot construction
  • For medium to high capacity
  • For intermittent operation (at least one controlled shutdown every 24 hours)
  • For universal use with multistage or modulating burners
  • For use with stationary air heaters (WLE)
  • For use with dual-fuel burners
  • Type-tested and approved in accordance with DIN EN 298

The flame supervision is ensured via a Siemens flame detector QRA2 / QRA4 / QRA10 or ionization probe. The difference between 01 series and 02 series is the duration of the safety time for the pilot burner of burners equipped with pilot gas valves. For atmospheric burners of high capacity, use the LFL1.638.

ACCESSORY PARTS:

AGM14.1 – Special Baseplate for LFL
AGM30 – Grounding protection for LFL1
AGM410490550 – Baseplate, LFL…

Ask us for engineering or product support.
——————————————————————
SIEMENS LFL… FLAME SAFEGUARD CONTROL:

(Certified complete with plug-in base and flame detector for most models below)

Metric (CE, EAC and RoHS Approvals)
LFL1.122 – 8 seconds purge at 60 Hz, 220 V
LFL1.122-110V – 8 seconds purge at 60 Hz, 110 V
LFL1.133 – 7 seconds purge at 60 Hz, 220 V
LFL1.133-110V – 7 seconds purge at 60 Hz, 110 V
LFL1.322 – 30 seconds purge at 60 Hz, 220 V
LFL1.322-110V – 30 seconds purge at 60 Hz, 110 V
LFL1.333 – 26 seconds purge at 60 Hz, 220 V
LFL1.333-110V – 26 seconds purge at 60 Hz, 110 V
LFL1.335 – 31 seconds purge at 60 Hz, 220 V
LFL1.335-110V – 31 seconds purge at 60 Hz, 110 V
LFL1.622 – 54 seconds purge at 60 Hz, 220 V
LFL1.622-110V – 54 seconds purge at 60 Hz, 110 V
LFL1.635 – 55 seconds purge at 60 Hz, 220 V
LFL1.635-110V – 55 seconds purge at 60 Hz, 110 V
LFL1.638 – 55 seconds purge at 60 Hz, 220 V

——————————————————————
——————————————————————

LAL Application:

  •  For oil atomizing burners of medium to large capacity
  • For multistage or modulating burners in intermittent operation
  • With or without air pressure supervision for checked air damper control
  • Flame supervision
    • with photoresistive detector QRB
    • or blue-flame detector QRC1
    • or silicon photocell detector RAR9

ACCESSORY PARTS:

AGM410490500 – Baseplate, LAL…

Ask us for engineering or product support.
——————————————————————
SIEMENS LAL… FLAME SAFEGUARD CONTROL FOR OIL ATOMIZATION BURNERS:

(Certified complete with plug-in base and flame detector for most models below)

Metric (CE, EAC and RoHS Approvals)
LAL1.25 – 220 V, 50/60 Hz
LAL1.25-110V – 110 V, 50/60 Hz, Universal
LAL2.14 – 220 V, 50/60 Hz
LAL2.14-110V – 110 V, 50/60 Hz, Flash Steam
LAL2.25 – 220 V, 50/60 Hz
LAL2.25-110V – 110 V, 50/60 Hz
LAL2.65 – 220 V, 50/60 Hz
LAL2.65-110V – 110 V, 50/60 Hz, Med/Heavy Oil
LAL3.25 – 220 V, 50/60 Hz
LAL3.25-110V – 110 V, 50/60 Hz

Technical Documentation

Siemens LFL and LAL Flame Safeguard Technical Documentation