Kromschroeder BCU370WFEU0D3 (88600221) burner control unit

Kromschroder 88600221 BCU370WFEU0D3 control unit controls, ignites and monitors industrial forced draught burners of unlimited capacity in intermittent or continuous operation.

Kromschroder BCU370WFEU0D3 88600221 gas burner safety control box technical data

• Mains voltage: 230 V AC,  50/60 Hz
• Flame control with UV sensor or ionisation sensor
• Flame signal for Ionization control: 1 – 28 μA, UV control: 1 – 35 μA
• For intermittent or continuous operation
• Air pressure check during pre-purge and operation by external air pressure switch DL
• Maximum length of ignition cable with integrated electronic ignition: 1 m
• Maximum length of ionisation/UV cable: 50 m (164 ft)
• Max. number of operating cycles: 250,000
• Ambient temperature: -20 – +60 °C (-4 – +140 °F)
• Enclosure: IP 54 pursuant to IEC 529
• Housing made of impact-resistant and heat-resistant plastic. Plug-in upper section with operating and display elements.
• Lower section with connection terminals, earthing strip and pre-wired neutral bus with spacious wiring chamber
• Fan control: 3 A relay
• Valve control: three-point step
• Flame control: ionization control (continuous or intermittent operation) or UV control
• intermittent operation with UVS)
• Digital input function: integrated tightness control
• With bottom section
• Minimum burner pause time tBP: 0 s
• Burner start-up attempts: 2
• Switch-on delay time tE: 0 s
• Pre-ignition time tVZ: 1 s
• Safety time 1, burner/pilot burner start-up tSA1: 5 s
• Flame proving period 1, burner/pilot tFS1: 0 s
• Safety time 2, main burner start-up tSA2: 0 s
• Flame proving period 2, main burner tFS2: 0 s
• Controller enable signal delay time tRF: 0 s
• Minimum burner on time tB: 0 s
• Safety time during operation tSB: 1 s
• V2 during burner operation: On
• Behaviour in the event of flame failure during operation: restart
• Burner switch-off threshold: 1 micro A
• UVS check (1 x in 24 hours): Off
• Operating time in Manual mode: limited to 5 minutes
• User-defined password
• Air monitoring during pre-purge: Off
• Air monitoring during operation: Off
• Gas pressure monitoring: Off
• Digital input function: integrated tightness control
• TC test period tP: 10 s
• Fan run-up time tGV: 0 s
• Valve control: On
• Pre-purge on each start-up: Off
• Quick start starts in closed position
• Pre-purge time tPV: 20 s
• Post-purge time tPN: 10 s
• Weight: 1.46 kg

Krom schroder BCU370WFEU0D3 88600221 gas burner control unit application

Kromschroeder 88600221 BCU370WFEU0D3 control box is versatile, suitable for both directly ignited forced draught burners and those ignited with a pilot burner. It initiates fan operation and positions the connected butterfly valve for pre-purge and ignition phases. Once pre-purge and burner ignition are complete, it sends an Enable signal to an external controller to adjust the butterfly valve as per output demand. Post-purge occurs after burner shutdown. This control unit also oversees gas and air pressure, with an optional tightness control function available for valve monitoring.

Programming via the optical interface and BCSoft PC software ensures precise adaptation to the relevant application. Adjustable start-up attempts and automatic restart enhance burner equipment flexibility.

The quick-start option facilitates compliant startup of forced draught burners without pre-purge after regular shutdown, preventing excess air admission into the combustion chamber. This ensures rapid availability of heat output upon temperature demand.