YORK Sun Premier commercial rooftop units are available in 25-80 tons. To simplify system configuration and minimize start-up time, units feature start-up wizards, a 5.5-inch OLED display and an optimized numeric keypad. With the RTUToolkit app for Android and iOS, users scan a unique QR code on each rooftop, which enables on-demand access to unit-specific details, technical literature and direct connection to technical support. Units also feature various airflow path configurations, indoor environmental quality options, such as ultraviolet lights, and modulating options for improved comfort.