Which Liebert XD cooling module should I use for a Data Center?
This depends on site specific conditions. Liebert XDO, XDV and XDH all use the Pumped Refrigerant technology and they are designed for the hot aisle / cold aisle principle. Liebert XDO is mounted above the cold aisle, on rods supported in the ceiling. It has a nominal capacity of 20 kW (at 55ºF entering fluid temperature, EFT, and 92ºF entering air temperature, EAT). If XDOs are combined with XDVs, they can cool more than 20kW per rack. Since the XDO module is located further away from the racks with heat load than the XDV and XDH, it is rated at 92ºF entering air temperature. The XDV is mounted on top of the rack or suspended on rods in the ceiling. The XDV has a nominal capacity of 10kW (at 55ºF EFT and 98ºF EAT) and can cool racks with more than 20kW heat load if the XDVs are double stacked. The XDH is mounted on the floor, between the racks, and the high capacity version has a nominal capacity of 30kW (at 55ºF EFT and 98ºF EAT). Therefore, it can cool racks with more than 30kW heat
