This turnkey project is to replace the existing non-functional Liebert 5 Ton unit and air handler with one (1) 5-Ton Liebert PDX Air-Cooled Systems, Model PX018UA1AD. The new unit must be a Liebert unit so that it can communicate with the other Liebert unit that is in the same location. The existing Liebert air handler (AC 100) will be removed from the penthouse, and the Liebert condenser (CU 100) will be removed from ground level for equipment disposal. The existing refrigerant lines will be abandoned in place. The new air handler will be installed in the penthouse. The new condenser will be located outside of the penthouse onto an equipment pad. The Contractor is to provide all necessary equipment, tools, crane, and machinery to install a new working unit.