Disconnect and remove existing pump. Install new Gould’s pump. Perform connections to suction side of pump and discharge side of pump with 2 unions and brass fittings. Install new pressure switch and boiler drain on tank tee. Perform wiring connections to new pump and new pressure switch. Turn power on to pump. Purge air out of suction side of pump from the lake. 2 year warranty on new pump installation. Thank you for choosing CPI