EBM PAPST Centrifugal fan G1G170-AB31-03 55600.01071

The EBM PAPST G1G170-AB31-03 is a centrifugal fan with a 170 mm impeller diameter. It operates at a rotation speed of 5650 rpm and consumes 2.15 A of current, delivering an airflow of 635 m³/h. This fan is a component of air supply and flue gas extraction systems in boilers or burners, supplying combustion air and, in sealed units, driving flue gases out. It is also listed under SKU 55600.01071.

When selecting a replacement fan of this type, verify the impeller diameter, airflow and pressure characteristics, outlet orientation (tangential or radial with specific rotation direction and discharge angle), and electrical requirements (voltage, frequency, control mode such as mains, PWM, or 0-10 V analogue). The flange pattern must match the burner mounting. Always check the electrical connection and control interface before fitting.

Common failure modes include worn bearings, impeller imbalance from deposit build-up, a failed start/run capacitor, or loss of speed feedback signal. These issues often manifest as an airflow fault reported by the boiler control, preventing ignition or causing erratic operation. Check for unusual noise, vibration, or error codes related to airflow.