EBM PAPST Tangential fan QLZ06/3000A105-3038LH-63aao 55412.60600

The EBM PAPST QLZ06/3000A105-3038LH-63aao is a tangential fan designed for combustion air supply in premix boilers and room-sealed burners. It operates at a rated voltage of 230 V, with a rotation speed of 1600 rpm and an input power of 45 W. The fan delivers an air flow of 230 m³/h and has overall dimensions of 96 x 395 x 83 mm. It includes a speed feedback signal and requires an external air pressure switch for safe operation. The unit is equipped with a capacitor.

When selecting a replacement tangential fan of this type, ensure the air flow and pressure match the burner's requirements, and that the outlet diameter and orientation align with the boiler's ductwork. The flange pattern must correspond to the existing mounting. Verify the supply voltage and control mode (mains on/off, PWM, or 0-10 V) are compatible with the appliance's control system. Measure the overall dimensions and impeller diameter to confirm physical fit.

Common failure modes include bearing wear, imbalance from deposits on the impeller, a failed capacitor, or loss of speed feedback. These issues often manifest as the boiler reporting an airflow or fan fault, preventing ignition or causing shutdown. Check the fan for unusual noise, vibration, or visible damage, and test the capacitor and speed feedback signal.