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the A421 series can be configured for either heating or cooling modes via the jumper settings on the circuit board or the digital menu
preventing a clean seal and leading to overheating
is a high-capacity liquid line filter drier engineered for demanding commercial and industrial refrigeration systems
It is not compatible with propane (LP) units
Lochinvar & A.O. Smith 100111709 Pilot Assembly 326058-757 the A421 series can beThe Lochinvar & A. O. Smith 100111709 Pilot Assembly is a specialized LP pilot assembly with tubing designed for critical ignition and flame sensing in high efficiency gas fired water heaters and boilers. This OEM pilot burner assembly is engineered specifically for liquid propane (LP) applications, ensuring a stable pilot flame is maintained to safely ignite the main burner. As a veteran technician knows, maintaining pilot assembly compatibility is
