URTT series packaged air conditioners are completely factory assembled, internally wired, charged with ecological R-410a refrigerant. The functional tests and tightness tests are conducted before delivery. The units are plug and play type and ready for installation. They are designed for ducted systems which enables it to be installed on roof tops or on the ground. URTT series is designed to operate at up to 53°C tropical ambient conditions. Condenser coils are manufactured from inner grooved copper tubes with corrugated aluminum fins and Evaporator coils are manufactured of seamless copper tubes and aluminum fins to ensure optimum heat transfer. All coils are tested against leakage by air pressure under water. Ample condenser surface and sensible air flow across the condenser ensures a low temperature differential between condensing temperature and the high ambient making the URTT packaged unit perform efficiently and durably.