Ventilateur ebmpapst G3G250-GN17-01

This is a centrifugal fan from EBM PAPST, catalogue article 375.145.912 and manufacturer code G3G250-GN17-01. It belongs to the category of centrifugal fans. Fans of this type supply combustion air to burners and, in room-sealed appliances, also drive flue gases out of the system. In modulating premix boilers, the fan speed determines the firing rate: the control varies the fan speed, and the gas valve follows the airflow. Such fans are selected primarily by required air flow and pressure, the direction and orientation of the outlet, impeller diameter, supply voltage, and control mode (mains, PWM, or 0‑10 V). The flange pattern must also match the burner or boiler mount. When replacing a fan of this class, check for typical failure modes: worn bearings, imbalance caused by deposits on the impeller, a failed capacitor, or speed feedback errors that the boiler may report as an airflow fault. Ensure the replacement fan is compatible with the control signal used by the burner control, as incorrect feedback can lead to lockout. No specific technical data for this article is available beyond the manufacturer’s part identification.