Evergreen VS Replaces Constant Airflow (Variable Speed) ECM. The 6510VUI is a 1 HP, 120/240V, 1050 RPM Genteq Evergreen VS ECM (Electronically Commutated) blower motor. It features a NEMA 48 frame, variable speed capabilities, and includes the required 5K010V user interface module for plug-and-play HVAC system integration. 6510VUI is a 1 HP constant airflow ECM replacement motor used in residential and light commercial HVAC furnaces and air handlers. This motor is designed to replace older Genteq constant-airflow ECM motors-specifically models 2.0, 2.3, 2.5, 3.0, and Eon. The 6510VUI comes pre-programmed with dual-voltage and dual-rotation capabilities, making it highly versatile for service technicians to carry as truck stock. Evergreen VS – ECM Variable Speed Replacement Motor, Includes User Interface 5K010V. 5.6 Diameter – 48 Frame. Class B Insulation, 55°C Ambient. 1/2 Diameter Shaft with Flat. 12.8/7.4 FLA.