Honeywell Kromschroder BCU4 Burner Control Unit Next Generation

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BCU-4

Honeywell’s next-generation Kromschroder BCU 4 Series (BCU 460, 465 and 480 models) are used for controlling, igniting, and monitoring impulse-controlled, modulating-controlled, or stage-controlled gas burners.

Honeywell’s next-generation Kromschroder BCU 4 Series (BCU 460, 465 and 480 models) are used for controlling, igniting, and monitoring impulse-controlled, modulating-controlled, or stage-controlled gas burners. They replace the earlier versions of the BCU460/465 and BCU480 burner controls. The BCU 4 series can be mounted close to industrial burners to facilitate system integration. Their fully electronic design lets the BCU units react quickly to various process requirements making them suitable for frequent cycling operation. The BCU 4 Series has a replaceable power module that facilitates SIL approval and helps extend product life.

The BCU burner control unit combines automatic burner control unit, ignition transformer, Automatic/Manual mode changeover, and operating and fault statuses readout in a compact metal housing. The display shows program status, unit parameters, and flame signal. You can perform diagnosis and adjust unit parameters via an optical interface. The BCU unit can be optionally configured with high temperature control, low NOx running mode, a valve proving system, and a bus module.

  • Certified for intermittent or continuous operation and for systems up to SIL 3 (compliant with PL e)
  • 4-digit 7-segment display
  • Parameter chip card for easy replacement
  • BCU 460/465 comes with 3 gas outputs, and BCU 480 comes with 4 gas outputs
  • Capacity control optimized for high numbers of operating cycles
  • Replaceable power module with wear parts
  • Air valve control with semi-conductor output
  • High temperature operation
  • Valve proving system
  • Failsafe bus communications within the protective system
  • Optional inputs

Comparing BCU 400 and BCU 4 Series

Feature Previous Generation BCU 4 Next Generation BCU 4 Series
Gas and air outputs2 gas valve outputs for the BCU 460, 4653 gas valve outputs for the BCU 460, 465
2 gas valve outputs for the BCU 4804 gas valve outputs for the BCU 480
Relay output for air valveSolid-state output for air valve to reach high number of switching cycles
N/AAutomatic relay testing
Valve proving systemN/AOptional valve proving system (tightness control, proof of closure)
Stage-controlled gas burner featuresL (air valve)F3 (air valve) and F1 (IC 40)
HMI features2-digit information display4-digit information display for vital information at a glance
Push-button switch for mains and reset functionNew push buttons: Reset/ Information and Main switch
Optional ProfibusOptional Profibus, Profinet, EtherNet/IP incorporating improved bus communication
N/AParameter Chip Card for easy replacement of the BCU without knowing the final parameter setting
Optional high temperature operationOptional high temperature and flameless operating mode to reduce thermal NOx
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