it is compatible with Y90AA-42xx series LP inlet fittings if the application requires a fuel conversion

This model serves as the primary Watts 0009128 replacement for legacy units including 0051209

Key Benefits: Direct OEM Compatibility: Verified fit for Power-Fin PB1501-2001 and PF1501-2001 models

Since liquid refrigerant mixing with oil can cause bearing wash-out or liquid slugging during startup

5 dual run capacitor

Lochinvar & A.O. Smith 100164439 Assembly 320788-704 it is compatible with Y90AA-42xxThe Lochinvar & A. O. Smith 100164439 Assembly is a critical digital temperature control panel designed for high performance commercial water heaters and boiler systems. As a genuine OEM replacement part, this digital temp ctrl panel assy ensures precise thermal regulation and system monitoring, which is essential for maintaining operational efficiency in demanding mechanical rooms. This assembly integrates seamlessly with the existing HVAC control