Kromschroeder 88600301 BCU370WFEU0D3B1-3 burner control unit
Kromschroeder 88600301 BCU370WFEU0D3B1-3 control unit oversees, ignites, and monitors industrial forced draught burners without capacity limitations, whether in intermittent or continuous operation. It can handle both directly ignited forced draught burners and those ignited with a pilot burner. Krom schroder 88600301 BCU370WFEU0D3B1-3 automatic gas firing device activates the fan and positions the connected butterfly valve for pre-purge and ignition. After pre-purge and burner start, an Enable signal is sent to adjust the butterfly valve based on output demand. Post-burner shutdown involves a post-purge process. Kromschroder 88600301 BCU370WFEU0D3B1-3 gas control unit also monitors gas and air pressure, optionally integrating a tightness control function for valve checks using an external gas pressure switch. Programmability via optical interface and BCSoft PC software ensures precise adaptation to specific applications. Adjustable start-up attempts and automatic restart enhance burner equipment flexibility. A quick-start option allows compliant startup without pre-purge after normal shutdown, ensuring rapid heat output upon temperature demand while minimizing unnecessary air admission into the combustion chamber. Kromschroder BCU370WFEU0D3B1-3 88600301 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 Fieldbus interface: PROFIBUS DP Bus control: three-point step With bottom section Minimum burner pause time tBP: 0 s Burner start-up attempts: 1 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: 2 s Safety time 2, main burner start-up tSA2: 3 s Flame proving period 2, main burner tFS2: 2 s Controller enable signal delay time tRF: 0 s inimum burner on time tB: 0 s Safety time during operation tSB: 1 s V2 during burner operation: Off Behaviour in the event of flame failure during operation: fault lock-out 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: On Air monitoring during operation: On Min. gas pressure monitoring: On Digital input function: DGmax. Monitoring TC test period tP: 10 s Fan run-up time tGV: 2 s Valve control: On Bus control activation: Off Bus control limitation: Closed position Pre-purge on each start-up: On Pre-purge time tPV: 30 s Post-purge time tPN: 0 s Weight: 1.46 kg