Caja de control «LME21.550C2» de Siemens

LME21.550C2 burner automation is used for starting and monitoring 2-stage gas or combination burners with intermittent operation, without actuator control. Flame monitoring is performed by an ionization electrode or flame detector QRA.. with AGQ3..A27. Main characteristics: Supply voltage: AC 230 V. Waiting time: 2.5 s. Pre-purge time: 50 s. Safety time: 10 s. Pre-ignition time: 2 s. Post-ignition time: 4 s. Ignition interval: 10 s. Set time for air pressure signal: 65 s.