The indoor Liebert XD Pumping and Chiller Units include the Liebert XDP and the Liebert XDC units. These refrigerant-based systems support Liebert XD System spot/zone data center cooling modules, including the Liebert XDO, Liebert XDV, Liebert XDH, and Liebert XD CoolFrame units. The Liebert XDP is used between the cooling units and an associated heat rejection system, while the Liebert XDC is used between the cooling units and a chilled water system.