maintaining a maximum working pressure of 406 psig and a wide temperature operating range from -67°F to 212°F

The standard rotation for this unit is Counter-Clockwise (CCW) when viewing the shaft end

ensuring a secure fit onto the blower motor spindle

providing the structural integrity required for demanding HVACR and fluid power systems

Maintaining precise resistance-to-temperature correlation is essential for defrost cycle timing

Lochinvar & A.O. Smith 100188878 Fan Assembly Freon maintaining a maximum working pressureThe Lochinvar & A. O. Smith 100188878 Fan Assembly is a critical OEM replacement component engineered specifically for the FTX500 series high efficiency boilers. Designed to maintain precise combustion air ratios, this heavy duty blower ensures optimal airflow for FTX500L and FTX500N models. As a veteran technician knows, maintaining the correct static pressure within the combustion chamber is vital for system longevity and peak thermal efficiency.