Danfoss 057H6103 BHO72.11 control box

For combustion control on 2-stage burners, short pre-purge and long post-ignition, the Danfoss BHO72.11 combustion control unit with code 057H6103 is widely used. This modification has a pre-purge of 10 seconds, pre-ignition of 6 seconds and post-ignition of 20 seconds. This unit operates at 230 V and has a low weight of only 0.17 kg.