Lochinvar & A.O. Smith 100109676 Adapter 320788-703 The Trane BLW0520 Combustion Blower

The Trane BLW0520 Combustion Blower is a critical induced draft assembly engineered for precise flue gas management in high-efficiency Trane and American Standard HVAC units

Multi-Speed Versatility: The 4-stage winding allows for field-adjustable cooling and heating speeds to meet specific CFM requirements

and PG8DAA series

Veterans recommend replacing the gasket whenever the water box is removed for tube cleaning or if there is any evidence of moisture seepage around the flange

Lochinvar & A.O. Smith 100109676 Adapter 320788-703 The Trane BLW0520 Combustion BlowerThe Lochinvar & A. O. Smith 100109676 Adapter is a critical OEM replacement part designed for field technicians servicing high efficiency water heaters and boiler systems. This 4 pin to 5 pin adapter bridges the gap between different generations of control components, typically required when upgrading a hot surface ignitor or gas valve assembly on units like the A. O. Smith BTN 80 and BTN 100 or compatible Lochinvar Knight series. In the field, you