Installed a new Rheem RP1448AJ1NA 4-ton air conditioning system with Copeland Scroll two-stage compressor. Replaced existing air handler with Rheem RGRM upflow gas furnace utilizing EcoNet control board. Ran new 3/8" liquid and 7/8" suction refrigerant lineset using Diversitech LineSet Cover insulation. Fabricated return air plenum using SMACNA guidelines with Stamford Shortbody elbows. Triple evacuated to 500 microns using a Yellow Jacket SuperEvac vacuum pump. Charged with 10 lbs of R-410A refrigerant per specifications on data plate. Installed Rheem EcoNet WiFi thermostat with dehumidification control and enabled two-stage cooling/heating operations.