Smith 100208173 Limit Switch is a critical safety component designed for high-performance water heaters and boilers

and 'Fan' for the Fan Motor (5 MFD)

single-phase power supply

then verify the normally open/closed contacts under 24V load

What equipment is this thermostat typically found in

Lochinvar & A.O. Smith 100171704 Gas Valve Refrigerant Smith 100208173 Limit Switch isThe Lochinvar & A. O. Smith 100171704 Gas Valve is an OEM LP gas valve replacement engineered for precise manifold pressure regulation in high efficiency residential heating and commercial water heaters. Designed to handle the higher energy density of liquid propane, this combination gas valve provides critical control over fuel flow, ensuring proper combustion and preventing soot buildup or irregular flame patterns. This unit serves as a direct