Lochinvar & A.O. Smith 100167820 Control 321702-401 Its SPDT contact configuration allows

Its SPDT contact configuration allows for versatile normally open and normally closed operations

Vibration Reduction: Factory-balanced to protect the blower motor shaft and internal bearings from premature wear

The National Board certified design ensures critical overpressure protection for steam systems where reliability is non-negotiable

and function to the Lochinvar BNR3417

reducing the need to stock multiple kit variations

Lochinvar & A.O. Smith 100167820 Control 321702-401 Its SPDT contact configuration allowsFor field technicians performing high elevation service calls, the Lochinvar & A. O. Smith 100167820 Integrated Control is the specific high altitude version required to maintain operational stability. This OEM replacement control board is engineered to recalibrate combustion parameters and blower speeds, compensating for the reduced air density found in mountainous regions. Designed as an integrated furnace control board replacement, it replaces