Viessmann 7855596 Radial Fan 318518-761 or visible shaft play are

or visible shaft play are indicators that the bearing and mounting plate have failed and require immediate replacement to prevent total system failure

suitable for hot water or chilled water service

Clean the motor shaft with emery cloth to remove rust before sliding on the 1/2 inch bore hub

Simplified Calibration: Factory-calibrated resistance values ensure immediate compatibility with Alco controllers without extensive field adjustment

Common Questions What causes a Carrier HH18HA160 limit switch to trip

Viessmann 7855596 Radial Fan 318518-761 or visible shaft play areThe Viessmann 7855596 Radial Fan is a precision engineered OEM replacement part designed for Vitodens 100 W B1HA and B1KA series condensing boilers. As a critical NRG118 combustion blower, this component features a high durability die cast aluminum housing and a steel impeller, specifically balanced to maintain the exact air fuel ratio required for efficient premix combustion. Whether you are servicing a B1HA 26 35 or B1KA 26 35 residential wall