Lochinvar & A.O. Smith 100173748 Cut-Off 30067439-890 the Series 250 is designed

the Series 250 is designed for non-potable hydronic heating and storage tank applications

this polarized accessory features a built-in active current regulator that limits draw to a primary 10 mA maximum current while ensuring stable operation across a broad 3

and 70-24151-03

Precision Fit: Designed for an exact match on Williams Forsaire 4007 and 5507 series models to eliminate gas bypass

This silicon carbide ignitor provides high-thermal conductivity and rapid heat-up times to ensure reliable burner transition

Lochinvar & A.O. Smith 100173748 Cut-Off 30067439-890 the Series 250 is designedThe Lochinvar & A. O. Smith 100173748 is a critical Low Water Cut Off (LWCO) safety control designed to protect hydronic and steam systems from dry fire conditions. Functioning as an Auto Reset sensor, this component continuously monitors the boilers water level and breaks the 24V control circuit to the burner if a low water threshold is detected. This specific HVAC replacement part is essential for maintaining operational safety in residential and