Single-Package Rooftop Standard Efficiency Electric Cooling Units with Optional Electric Heat 3 to 27.5 Nominal Tons 48/50TC WeatherMaster Rooftop Unit with Puron Refrigerant 50TC WEATHERMAKER® rooftop unit were designed by customers for customers. With a gauge plug, centralized control center, plug & play accessory board, no-strip screw collars, and handled access panels, weve made the unit easy to install, easy to maintain, and easy to use. Units are pre-wired and pre-charged with environmentally sound Puron® (R-410A) refrigerant at the factory. The units are factory tested in cooling mode. Performance Features Puron® (R-410A) HFC refrigerant ASHRAE 90.1 compliant Single-stage capacity control (sizes 04 to 12) Two-stage cooling capacity control (sizes 08 to 30) SEERs up to 13.0 EERs up to 11.3 IEERs up to 12.2 Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62 Standard, sloping design; side or center drain Pre-painted exterior panels and primer-coated interior panels tested to 500 hours salt spray protection Acutrol™ refrigerant metering system Fully insulated cabinet