Engineered for mission-critical maintenance of pneumatic and electric commercial valve bodies

or the unit failing to shift into defrost mode

preventing fluid loss while automatically venting non-condensable gases that compromise pump suction and heat transfer efficiency

though compatibility depends on the specific thermostatic charge and valve body configuration

This genuine Trane part ensures factory-spec compatibility

Lochinvar & A.O. Smith 100109316 Burner Assembly 321702-401 Engineered for mission-critical maintenance ofWhen you're out in the field servicing high recovery natural gas units, having the correct Lochinvar and A. O. Smith OEM replacement parts is critical for restoring system integrity. The 100109316 Burner Assembly is a high performance FVIR burner assembly utilizing a #33 orifice specifically designed for Natural Gas (NG) applications. This 100109316 gas water heater burner is engineered to meet Flammable Vapor Ignition Resistant (FVIR) standards,