Siemens LFL1.335 control box

Siemens LFL1.335 burner control unit is used for start-up and monitoring of multi-stage or modulating gas, oil or combination forced-draft burners of medium and high power with intermittent operation. Main characteristics: Supply voltage: 220 V. Pre-purge time: 37s. Safety time: 2.5s. Safety time or first safety time when operating with pilot burner: 5 s. Time to ignition: 5s. Time to ignition: 2.5 s. Interval between voltage application to terminals: 12.5 s. Interval between start of TSA' and valve shutdown at terminal: 15 s. Interval between voltage application to terminals: 12.5 s. Post-purge time: 15s. Interval between start command and voltage application to terminal: 2.5s. Start-up sequence duration 74s. Second safety time for burners with pilot burner 5s. Additional information: 30884