The SPST normally open relay output (integrated status output) handles 10A at 260 VAC

Pressure switches are safety devices calibrated to the specific venting and airflow design of the furnace

Smith water heaters and boilers

It is commonly used in gas burners and atmospheric furnace applications

Using a multimeter with a capacitance setting

York S1-401021 Filter Drier 30067439-890 The SPST normally open relayThe York S1 401021 Filter Drier is a critical component for maintaining system dehydration and internal cleanliness in residential and commercial cooling equipment. Often cross referenced as the Parker C 163 S, this liquid line filter drier features a 16 cubic inch desiccant core precisely engineered for high capacity moisture and acid removal. Its 3 8 ODF copper sweat connections ensure a leak proof seal during brazing, providing a reliable barrier