De Dietrich Impeller 300017022

This impeller is a fan wheel used in De Dietrich G 300 S/N gas burners and M 300 S/P oil burners. It draws in combustion air and expels flue gases. The impeller diameter is 180 mm, length 180 mm, and width 90 mm. It supports Mains, PWM, and 0-10 V control modes. This OEM part supersedes the earlier number 300013152.

Replacement impellers are selected by required air flow and pressure, impeller diameter, and control mode (mains, PWM, or 0-10 V). The outlet direction and flange pattern must match the existing fan housing. Before ordering, measure the original impeller's diameter and mounting dimensions, and verify that it rotates freely without damage.

Typical failures include worn bearings, imbalance from dust or deposits on blades, a failed fan motor capacitor, or speed feedback errors. Symptoms may include unusual noise, vibration, or the boiler shutting down with an airflow fault. Check for free rotation, visible damage, and clean the blades.