Williams 7B46 Motor Support 321894-708 and six X8149 UV-A lamps

and six X8149 UV-A lamps for a full technical overhaul

ensuring superior seating integrity and leak-free performance under high-temperature conditions up to 406°F

you must select a different color-coded spring compatible with the RV110/RV111 series

Precision Control: Maintains tight temperature windows with adjustable differentials (5-20°F high limit

Changing the pitch (28 degrees) can alter the motor’s amp draw and lead to motor burnout or inadequate cooling capacity

Williams 7B46 Motor Support 321894-708 and six X8149 UV-A lampsThe Williams 7B46 Motor Support is a critical structural component engineered specifically for Williams Forsaire furnaces, including Counterflow Top Vent and Direct Vent models. Designed to work in pairswith two motor supports required per unitthis heavy duty furnace replacement part provides the necessary rigidity to maintain blower motor alignment. Precision alignment is essential to prevent premature bearing wear and ensures quiet, reliable airflow