Emerson Liebert Xtreme Density Specifications Page 1

Precision Cooling forBusiness Critical ContinuityLiebert Xtreme Density™System Design Manual

System Description4Figure 6 Top-mounted XDV modules with flexible piping in hot aisle-cold aisle arrangementHot aisles and cold aisles alternate, taki

System Description51.4 Liebert XDP—Pumping UnitThe XDP isolates the building’s chilled water circuit from the XD Coolant circuit. The XDP circulates c

System Description61.5 Liebert XDC—ChillerThe XDC is an indoor chiller that connects directly to the XDO or XDV units and provides coolant cir-culatio

System Description71.7 Liebert XDA—Air Flow EnhancerThe XDA is a fan unit that boosts the airflow through densely populated enclosures, removing hot s

Starting a New Equipment Cooling Project82.0 STARTING A NEW EQUIPMENT COOLING PROJECT2.1 Determining Cooling Equipment Needs1. Is there adequate space

Starting a New Equipment Cooling Project92.2 Implementing a Hot-Aisle/Cold Aisle DesignA best practice is to use rows of equipment racks in an alterna

Designing a Liebert XD Solution103.0 DESIGNING A LIEBERT XD SOLUTIONLiebert XD systems are intended for use with precision air conditioning equipment,

Designing a Liebert XD Solution113.3 Selecting Liebert XDO or Liebert XDV ModulesThe next step is to select XDO or XDV cooling modules to be configure

Designing a Liebert XD Solution123.5.2 Determining Vertical Placement of Liebert XDOs Above the Cold AisleIn the maximum density configuration, Lieber

Designing a Liebert XD Solution133.6 Liebert XDV Unit PlacementXDV units should be placed on top of the cabinets that generate the greatest amount of

Designing a Liebert XD Solution143.7 Liebert XDP/XDC PlacementThe XDP/XDC may be placed in the critical space or in an adjacent equipment room. The al

Designing a Liebert XD Solution15Figure 15 XDV units mounted on racks emitting 5kW of heat top viewFigure 16 XDV units mounted on racks emitting 8kW o

Designing a Liebert XD Solution16Figure 17 XDV units mounted on racks emitting 16kW of heat top viewDownflow Cooling UnitDownflow Cooling UnitPerforat

Designing a Liebert XD Solution173.9 Liebert XD Coolant™ The coolant used in the XD system is HFC-134a (1,1,1,2-tetrafluoroethane), made by a number o

Designing a Liebert XD Solution18The assembly and connection means used for piping in the XD system are similar to that of conven-tional refrigeration

Designing a Liebert XD Solution193.12 Bypass Flow ControllersTo ensure the XDP/XDC pumps operate within the optimum range, some installations require

Designing a Liebert XD Solution203.13 Determining Coolant VolumeAfter the preliminary system design is completed, Tables 5, through 9 may be used to d

Designing a Liebert XD Solution213.14 Liebert XDC DX R-407c Circuit Volume—Air Cooled UnitsWeigh in the calculated charge based on Tables 7, 8 and 9.3

XD Overhead Cooling Module—Liebert XDO224.0 XD OVERHEAD COOLING MODULE—LIEBERT XDO Standard Features XDO• Micro Channel Heat Exchanger—The Liebert XDO

XD Overhead Cooling Module—Liebert XDO23Figure 23 XDO16 internal mounting location DPN000771Pg. 5 Rev. 37/8" (22mm)diameter mountingholes7/8"

iTABLE OF CONTENTS1.0 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11.1

XD Overhead Cooling Module—Liebert XDO24Figure 24 XDO top and front electrical access points4.1 Liebert XD Vertical Top Cooler (XDV)4.1.1 Standard Fea

XD Overhead Cooling Module—Liebert XDO254.1.2 Optional Features Liebert XDV• Factory-Installed Flexible Piping (For use with prefabricated piping asse

XD Overhead Cooling Module—Liebert XDO26Figure 26 XDV dimensions with factory-installed flex pipeDepth, Top39-1/2" (1003mm)Width22-7/8" (581

XD Overhead Cooling Module—Liebert XDO27Figure 27 XDV electrical connectionsRear of XDVRear View of XDVDPN000770, Page 3Rev. 2Right side of XDVCondens

XD Overhead Cooling Module—Liebert XDO28Figure 28 Suspending single XDV from UnistrutsFigure 29 Suspending single XDV from the roof structureUnistrut(

XD Overhead Cooling Module—Liebert XDO29Figure 30 Alternative mounting methods—mounting multiple XDV units Unistrut, field-suppliedBolt, 3/8"-16,

XD Overhead Cooling Module—Liebert XDO304.2 Liebert XD Piping Dimensions and FeaturesFigure 31 Five-port prefabricated piping for XDV modulesTable 10

XD Overhead Cooling Module—Liebert XDO31Figure 32 Two-port prefabricated piping for XDV modulesTable 11 Two-port prefabricated piping legendBranch Pip

XD Overhead Cooling Module—Liebert XDO324.3 Liebert XDP Standard Features• Heat Exchanger—Brazed plate design with interwoven circuiting constructed o

XD Overhead Cooling Module—Liebert XDO33Figure 33 XDP dimensions, access points and external featuresXDO/XDVReturn 2-1/8" dia.ReturnSupplyFrontof

iiFIGURESFigure 1 Pressure enthalpy diagram - refrigerant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

XD Overhead Cooling Module—Liebert XDO34Figure 34 Front view of XDP and electrical enclosureFigure 35 XDP electrical enclosure knockout locations for

XD Overhead Cooling Module—Liebert XDO35Figure 36 XDP high voltage connectionsCustomer PowerConnectionDisconnectSwitchCircuitBreakerContactorTransform

XD Overhead Cooling Module—Liebert XDO364.4 Liebert XDC Standard Features• Compressors—Scroll with a suction gas cooled motor, vibration isolators, th

XD Overhead Cooling Module—Liebert XDO37Figure 38 XDC piping locationsFigure 39 Front view of XDC and electrical enclosuresG - Supply to cooling units

XD Overhead Cooling Module—Liebert XDO38Figure 40 XDC electrical enclosure knockout locations for field wiring Figure 41 XDC high voltage connections—

XD Overhead Cooling Module—Liebert XDO39Figure 42 XDC high voltage connections—secondary disconnect switchFigure 43 XDC heat rejection electrical conn

XD Overhead Cooling Module—Liebert XDO40Figure 44 XDC electrical enclosure knockout locations for ELVFigure 45 XDC ELV field connections points

Specifications415.0 SPECIFICATIONSTable 12 Liebert XDO specificationsModelsXDO16BK--0, XDO16DK--0(60Hz)XDO16BT--0, XDO16DT--0(60Hz)XDO16BT--0, XDO16DT

Specifications42Table 13 Liebert XDC specificationsParameter 60Hz Models 50Hz ModelsCooling Capacity, Nominal46 tons / 160kW with 125ºF (51.6ºC) conde

Specifications43Table 14 Liebert XDV specificationsNumber of models 8, based on input voltage, optional condensate sensing and flex hose optionCooling

iiiTABLESTable 1 Calculating quantity and spacing of XDO modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Table 2

Specifications44Table 15 Liebert XDP specificationsNumber of Models 4, based on input voltage and pump redundancyCooling Capacity, Nominal160 kW / 46

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System Description11.0 SYSTEM DESCRIPTIONThe Liebert XD™ family of cooling units delivers efficient, sensible cooling to high-heat environ-ments. XD s

System Description21.1 Direct and Indirect System ConfigurationsLiebert XD systems are available in Direct and Indirect configurations—differentiated

System Description3Figure 4 Suspended XDO modules in hot aisle-cold aisle arrangement1.3 Liebert XDV—Vertical Above-Cabinet Cooling Module The XDV is