Kromschroder Automatic burner control unit IFD258-5/1W 84621630

The Kromschroder IFD258-5/1W automatic burner control unit (SKU 84621630) is designed for directly ignited industrial gas burners with forced draught. It supports modulating or stage-controlled burners and can be used in multi-burner setups with central pre-purge and monitoring. The unit operates on 230 V supply voltage, has a safety time of 5 seconds, and monitors flame via ionization or UV sensors. It features immediate fault lock-out or restart on flame failure, with a maximum of 250,000 operating cycles. The control box has IP54 protection, weighs 682 g, and operates in ambient temperatures from -20 to 60 °C.

When selecting a replacement burner control unit of this type, ensure the supply voltage, safety time, and flame detection method (ionization or UV) match the existing system. The unit must be compatible with the burner's fuel type and application (directly ignited industrial gas burners). Check the physical dimensions and cable gland size (M16) for proper mounting. The installation position is any, but the ambient temperature and humidity limits must be respected. Verify the overvoltage category and safety standard compliance (EN 60730) for the specific installation.

Typical failures of this kind of control unit include failure to ignite, flame loss during operation, or immediate lock-out. Symptoms may include the burner not starting, repeated reset cycles, or the unit displaying a fault status. Check the flame sensor (ionization or UV) for contamination or damage, and verify the supply voltage and wiring connections. If the unit locks out frequently, inspect the flame signal strength and ensure the sensor is correctly positioned.