Boîtier de commande Siemens « LAL2.65 »

Siemens LAL2.65 electromechanical burner automatic controller is used for start-up and control of multi-stage or modulating forced-draught oil burners of medium and high capacity with intermittent operation and air pressure monitoring via functional check of air pressure relay during start-up and operation. Yellow flame monitoring is performed by photoresistive sensor QRB1..., blue flame monitoring by sensor RAR... with selenium photocell. Main characteristics: Supply voltage: AC 230 V. Pre-purge time: 66.5 s. Safety time: 5 s. Time to ignition: 2.5 s. Time after ignition: 15 s. Interval between voltage application to terminals: 7.5 s. Interval between voltage switching at terminals: 7.5 s. Post-purge time: 15 s. Fan motor start delay: 2.5 s. Start-up sequence duration: 91 s.