This Daikin-McQuay HVAC replacement part is essential for technicians servicing FCHB

offering improved enclosure ratings and the same 1/2" x 1/2" NPT connections for direct installation

maintaining the necessary interrupting capacity to prevent equipment damage

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

Johnson Controls A19ABA-23 Utility Thermostat

Lochinvar & A.O. Smith 100171704 Gas Valve Refrigerant This Daikin-McQuay HVAC replacement partThe 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