Lochinvar & A.O. Smith 100278104 Switch Els PW 17895 This narrow threshold helps prevent

This narrow threshold helps prevent catastrophic mechanical failure by cutting the 24V circuit to the contactor before oil slugging or overheating occurs

protecting system integrity and optimizing steam pressure control

Precise Pressure Regulation: High-volume discharge capacity ensures rapid pressure equalization in emergency overpressure scenarios

Natural Gas Specific: Factory-set for natural gas (NG) applications to provide precise BTU input and optimal flame stability

Lochinvar & A.O. Smith 100278104 Switch Els PW 17895 This narrow threshold helps preventThe Lochinvar & A. O. Smith 100278104 Switch is a critical safety component designed for high performance hydronic and domestic hot water systems. This 100F manual reset limit switch acts as a primary thermal safeguard, effectively monitoring surface or water temperatures and interrupting the electrical circuit to the gas valve if the 100 degree Fahrenheit threshold is exceeded. Engineering for reliability, this manual reset high limit switch prevents