Emerson Xtreme Density manual Liebert XDP-Pumping Unit, Liebert XDP Minimum Load

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System Description

1.8Liebert XDP—Pumping Unit

The Liebert XDP isolates the building’s chilled water circuit from the pumped refrigerant circuit. The Liebert XDP circulates refrigerant to Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV mod- ules while preventing condensation by maintaining the refrigerant’s temperature above the dew point. The Liebert XDP employs two sets (for redundancy) of remote sensors to determine the temper- ature and humidity in the air and instantly adjusts refrigerant supply temperature to compensate for changing conditions.

1.8.1Liebert XDP Minimum Load

The Liebert XDP’s minimum recommended operating load is 20% of system nominal capacity. For example, a Liebert XDP160 60Hz system’s minimum load would be 32 kW. Loading below this value can unfavorably affect system operation. Consult factory for any loading below this recommendation.

Figure 10 Liebert XDP pumping unit

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Contents Liebert Xtreme Density Page Table of Contents Specifications XDH and Liebert XdcfIii Tables Liquid Liquid/Vapor Mix CoolFrame, XDH Liebert Heat Rejection Air Cooled or Water/Glycol Cooled Direct and Indirect System ConfigurationsEuropean Union Fluorinated Greenhouse Gas Requirements Pumped RefrigerantLiebert XDO-Overhead Cooling Module Liebert XDV-Vertical, Above-Cabinet Cooling Module Liebert XDH-Horizontal Cooling Module Liebert Xdcf Liebert Xdcf units on BladeFrame EX cabinetsLiebert XDA-Air Flow Enhancer Liebert XDP-Pumping Unit Liebert XDP Minimum LoadLiebert XDC-Refrigerant Chiller Liebert XDC Minimum LoadLiebert XD Field Piping Flexible Piping Kit Liebert XD field-installed port kits header connection sizeLiebert XD Piping Prefabricated HeadersDetermining Cooling Equipment Needs Implementing a Hot-Aisle/Cold Aisle Design Hot aisle-cold aisle arrangement with under-floor sourceDetermine Cooling Requirements and Select Liebert XD System Calculate the Heat Load to be Handled by Liebert XD SystemSelecting Liebert XD Cooling Modules Airflow Requirements for Liebert XD SolutionsConfiguring a Liebert XD System Number of Modules Supported by a Liebert XDP or Liebert XDCLiebert XDO Placement Determining Spacing of Liebert XDOs in an AisleLiebert XDO spacing-horizontal and vertical Input Information Step Results Liebert XDV Unit PlacementLiebert XDV is suspended From ceiling structure Liebert Xdcf Placement Liebert Xdcf unit mounting locationsLiebert XDH Placement Liebert XDP/Liebert XDC PlacementInterlaced piping arrangement For enhanced protectionProtection Interlaced piping arrangement for enhanced protectionFor enhanced Liebert XD Refrigerant Liebert XD Piping System DesignSupply, return pipe sizes for refrigerant loop Key to Piping Pipe Function Size / Equivalent Pipe LengthRefrigerant Pumped Liebert XD Piping SlopeBypass Flow Controllers XD CoolFrame, XDH, XDO or XDVLiebert XDP Liebert XDC System refrigerant charge for the supply and return mains Determining Refrigerant VolumeLiebert XDP/Liebert XDC Pumped R-134a Circuit Volume Return Line Diameter 5/8 Return Line DiameterCalculating refrigerant charge-example Liebert XDC DX R-407c Circuit Volume-Air Cooled UnitsCalculating Refrigerant Charge-Example Worksheet to calculate refrigerant chargeOutdoor condenser charge-R-407c Chilled Water PipingElectrical Indoor water/glycol cooled module R-407c refrigerant chargeLiebert XDO Standard Features Optional Features Liebert XDOLeft Side XDO 24-1/8 Rear of XDO Liebert XDO internal mounting location Liebert XDV Standard Features Liebert XDO top and front electrical access pointsOptional Features-Liebert XDV Liebert XDV dimensionsDetail Area a Detail a Power Source Liebert XDV electrical connections for CSA-approved units Suspending single Liebert XDV from Unistruts Page XD CoolFrame, XDH, XDO or XDV Liebert Xdcf Standard FeaturesLiebert XDP Return Pipe Liebert Xdcf Mechanical ConsiderationsLiebert TM Egenera BladeFrame Liebert Xdcf Installation ConsiderationsLiebert Xdcf Piping Connection Methods and Points Header System Liebert XDH Standard FeaturesOptional Features-Liebert XDH Liebert XDH dimensions Supply and return piping connectionsRecommended Arc Or 2-5/8 O.DRear XD Cooling Module Either 5/8 or 7/8 Refer to for detailsLiebert XD Liebert XDV CoolFrame Liebert XD Flex Pipe KitLiebert XD Flex Pipe assemblies, supply and return Liebert XDHTwo-port prefabricated piping legend Liebert XD Piping Dimensions and FeaturesPiping Installation Method prefabricated headers Four-port prefabricated piping legend Branch Piping Standard Run Long Run Four Port 186551G21Five-port prefabricated piping legend Branch Piping Standard Run Long Run Five PortTen-port prefabricated piping legend Branch Piping Standard Run Long Run Ten Port 186650G51Liebert XDP Standard Features 33-1/8 990 1067 XDP160Unit piping outlet connection sizes, inches, OD Cu Model Pipe Connection Point 50/60 HZEnclosure Cover Customer Power Liebert XDC Standard Features Liebert XDC Optional FeaturesLiebert XDC piping locations Liebert XD Chiller piping connection sizesLiebert XDC Water/Glycol Piping Connection Sizes Piping locations-floor stand and valve assembly Front view of Liebert XDC and electrical enclosures Switch Transformer Electrical handy box, factory-installed with cover Liebert XDC Extra Low Voltage field connections points Liebert XDC160 specifications Piping Connections Performance DataHeat Rejection Equipment Performance Data204 Liebert XDP160 specifications Liebert XDO16 specifications Sides, Front and Rear Liebert XDO20 specificationsPipe Connections without flex pipe Liebert XDO20 dimensions-domestic and export Liebert XDV8 specifications Liebert XDV10 specifications Liebert Xdcf specifications Liebert XDV8 dimensions-domestic and exportLiebert XDV10 dimensions-domestic and export Liebert XDH specifications Specifications Specifications Page Ti n Ne tIti That