Siemens LGB21.350A27
The burner controls LGB... are used for the startup and supervision of single- or twostage gas or gas / oil burners having a capacity of up to 350 kW in intermittent operation.The flame is supervised with either an ionization current detector electrode, a blue flamedetector QRC1... for forced draught gas / oil burners, or a UV detector QRA... (withauxiliary unit AGQ1...), depending on the type of burner control used.