Lochinvar & A.O. Smith 100135312 Burner Refrigerant It is the standard A50

It is the standard A50 current sensing relay used to interlock these units with the HVAC fan

resuming operation once the plenum reaches safe temperatures

Perfect Balance: Factory-balanced 3-blade design reduces mechanical stress on the motor shaft and brackets

oil leaks around the terminals

Complete Mechanism Restore: Includes all critical wear components—valve

Lochinvar & A.O. Smith 100135312 Burner Refrigerant It is the standard A50The Lochinvar & A. O. Smith 100135312 Burner is a critical OEM replacement part designed for high efficiency combustion in commercial heating applications. This main burner assembly, which is technically identical to the Lochinvar BNR3430, features an integrated pressure tap to allow for precise manifold pressure adjustments and diagnostic testing. It is engineered specifically for use in Copper Fin II series equipment, including model CP 991 to 2071