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Emerson Xtreme Density manual Liebert XDC-Refrigerant Chiller, Liebert XDC Minimum Load

Models: Xtreme Density

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1.9Liebert XDC—Refrigerant Chiller

System Description

1.9Liebert XDC—Refrigerant Chiller

The Liebert XDC is an indoor chiller that connects directly to the Liebert XD cooling modules and pro- vides refrigerant circulation and control. The Liebert XDC keeps the refrigerant temperature above the dew point and eliminates the need for a separate pumping unit in the direct system configuration. The Liebert XDC employs two sets (for redundancy) of remote sensors to determine the temperature and humidity in the air and instantly adjusts refrigerant supply temperature to compensate for changing conditions.

1.9.1Liebert XDC Minimum Load

The Liebert XDC’s minimum recommended operating load is 40% of system nominal capacity. For example, a Liebert XDC160 60Hz system’s minimum load would be 64 kW. Loading below this value can unfavorably affect system operation. Consult factory for any loading below this recommendation.

Figure 11 Liebert XD Chiller unit

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Emerson Xtreme Density manual Liebert XDC-Refrigerant Chiller, Liebert XDC Minimum Load, Liebert XD Chiller unit

Contents

For Business-Critical Continuity Liebert Xtreme DensitySystem Design Manual Precision CoolingPage 1.0 SYSTEM DESCRIPTION TABLE OF CONTENTS4.0 LIEBERT XD COOLING MODULES-LIEBERT XDO, LIEBERT XDV, LIEBERT FIGURES5.0 SPECIFICATIONS XDH AND LIEBERT XDCFFigure 24 Hydraulic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 25 Bypass flow controller details, dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 26 Bypass flow controller arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 27 Bypass flow controller piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 28 Dimensional data-Liebert XDO hard-piped units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 29 Dimensional data-Liebert XDO with pre-charged option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Figure 30 Liebert XDO internal mounting location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 31 Liebert XDO top and front electrical access points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 32 Liebert XDV dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 33 Liebert XDV dimensions with one-shot connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 34 Liebert XDV electrical connections for CE approved units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 35 Liebert XDV electrical connections for CSA-approved units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 36 Suspending single Liebert XDV from Unistruts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 37 Suspending single Liebert XDV from the roof structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 38 Alternative mounting methods-mounting multiple Liebert XDV units . . . . . . . . . . . . . . . . . . . 39 Figure 39 Liebert XDCF hydraulic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Figure 40 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Figure 41 Liebert XDCF unit mounting locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Figure 42 Liebert XDCF supply and return piping access points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Figure 43 Liebert XDH dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Figure 44 Supply and return piping connections TABLES 1.0 SYSTEM DESCRIPTION PressureEnthalpy Figure 1 Pressure enthalpy diagram - refrigerant1.1 European Union Fluorinated Greenhouse Gas Requirements 1.2 Direct and Indirect System ConfigurationsFigure 2 Direct system configuration-hydraulic system diagram Figure 3 Indirect system configuration-hydraulic system diagram1.3 Liebert XDO-Overhead Cooling Module 1.4 Liebert XDV-Vertical, Above-Cabinet Cooling Module 1.5 Liebert XDH-Horizontal Cooling Module Figure 8 Liebert XDCF units on BladeFrame EX cabinets 1.6 Liebert XDCF1.7 Liebert XDA-Air Flow Enhancer 1.8 Liebert XDP-Pumping Unit 1.8.1 Liebert XDP Minimum LoadFigure 10 Liebert XDP pumping unit 1.9 Liebert XDC-Refrigerant Chiller 1.9.1 Liebert XDC Minimum LoadFigure 11 Liebert XD Chiller unit Prefabricated Headers Liebert XD field-installed port kits header connection size1.10 Liebert XD Piping 1.10.1 Liebert XD Field Piping Flexible Piping Kit2.0 STARTING A NEW EQUIPMENT COOLING PROJECT 2.1 Determining Cooling Equipment NeedsFigure 13 Hot aisle-cold aisle arrangement with under-floor source 2.2 Implementing a Hot-Aisle/Cold Aisle Design3.0 DESIGNING A LIEBERT XD SOLUTION 3.1 Determine Cooling Requirements and Select Liebert XD System3.2 Calculate the Heat Load to be Handled by Liebert XD System 3.5.1 Number of Modules Supported by a Liebert XDP or Liebert XDC 3.4 Airflow Requirements for Liebert XD Solutions3.5 Configuring a Liebert XD System 3.3 Selecting Liebert XD Cooling Modules3.6 Liebert XDO Placement Figure 14 Liebert XDO placement over cold aisle3.6.1 Determining Spacing of Liebert XDOs in an Aisle Figure 15 Liebert XDO spacing-horizontal and vertical Figure 16 Positioning Liebert XDV on top of cabinet 3.7 Liebert XDV Unit PlacementFigure 17 Liebert XDCF unit mounting locations 3.8 Liebert XDCF PlacementCold Aisle 3.9 Liebert XDH Placement3.10 Liebert XDP/Liebert XDC Placement Figure 18 Liebert XDH placementfor enhanced protection Interlaced piping arrangementfor enhanced Interlaced piping arrangement for enhanced protectionInterlaced piping arrangement3.12 Liebert XD Refrigerant 3.13 Liebert XD Piping System DesignExample Liebert XD Cooling Modules Supply, return pipe sizes for refrigerant loop20ft 6.7m max 9ft 2.7m max Liebert XDP/ Liebert XDCLiebert XDC Figure 24 Hydraulic diagram3.14 Liebert XD Piping Slope 3.15 Bypass Flow ControllersFigure 27 Bypass flow controller piping Figure 25 Bypass flow controller details, dimensionsLiebert XDP or Liebert XDC Figure 26 Bypass flow controller arrangement3.16 Determining Refrigerant Volume 3.16.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit VolumeSystem refrigerant charge for the supply and return mains Return Line Diameter 5/8 Metal Flex Pipe Connector LengthRefrigerant Charge, lb. kg Supply Line Diameter 1/2Table 12 Worksheet to calculate refrigerant charge 3.17 Liebert XDC DX R-407c Circuit Volume-Air Cooled Units3.16.2 Calculating Refrigerant Charge-Example Table 11 Calculating refrigerant charge-exampleTable 14 Outdoor condenser charge-R-407c 3.18 Chilled Water Piping3.19 Electrical 3.20 Display Panel and Remote Temperature/Humidity Sensor Locations4.1.1 Optional Features Liebert XDO 4.1 Liebert XDO Standard Featuresof XDO 24-1/8 Figure 28 Dimensional data-Liebert XDO hard-piped unitsFigure 29 Dimensional data-Liebert XDO with pre-charged option Left SideFigure 30 Liebert XDO internal mounting location Figure 31 Liebert XDO top and front electrical access points 4.2 Liebert XDV Standard FeaturesMounting Hole Knockouts for High-Voltage Wiring FRONT OF XDO TOP OF XDO Mounting Hole Knockouts for Low-Voltage WiringFigure 32 Liebert XDV dimensions 4.2.1 Optional Features-Liebert XDVSupply Connection 1/2 Figure 33 Liebert XDV dimensions with one-shot connectionDetail Area “A” Detail “A”TO BE N.E.C. CLASS USE SWITCH CONTACTS WITH 75 V.A MINIMUM Knockout for Optional Wiring Primary and Secondary Power CordsPOWER SOURCE 60Hz MODELS ONLY FIELD WIRING CONNECTIONS AT TERMINAL STRIPRear of XDV Voltage Connections Knockout for Optional Wiring IEC Primary andSecondary Power Inlet Rear of XDV Right Side of XDV Condensate Detection Dry Contacts - LowFigure 37 Suspending single Liebert XDV from the roof structure Figure 36 Suspending single Liebert XDV from UnistrutsAttach hanger brackets or Liebert XDP 4.3 Liebert XDCF Standard FeaturesFigure 39 Liebert XDCF hydraulic diagram Liebert XDCLiebert TM XD Figure 40 Overall dimensionsNETWORK POWER 4.4 Liebert XDCF Mechanical Considerations4.5 Liebert XDCF Installation Considerations 4.6 Liebert XDCF Piping Connection Methods and PointsFigure 41 Liebert XDCF unit mounting locations 4.6.1 Header System 4.7 Liebert XDH Standard Features4.7.1 Optional Features-Liebert XDH Figure 42 Liebert XDCF supply and return piping access pointsRear Figure 43 Liebert XDH dimensionsTop of Liebert XDH Detail “A”Or 2-5/8 O.D Return Mainseen from end 2-1/8 O.DTable 17 Liebert XD Flex Pipe assemblies, supply and return 4.8 Liebert XD Flex Pipe KitReturn 4.9 Liebert XD Piping Dimensions and Features4.9.1 Piping Installation Method prefabricated headers SupplyReturn SupplyTable 20 Five-port prefabricated piping legend Page 3, Rev7-7/16 Ref. Typ SupplyReturn ODS ODR 120 Ref. 3048mmTable 22 Liebert XDP dimensions 4.10 Liebert XDP Standard FeaturesUnit Dimensional Data Figure 50 Liebert XDP dimensionsTable 23 Unit piping outlet connection sizes, inches, OD Cu Figure 51 Liebert XDP piping access points and external featuresUser Interface SwitchStatus Lamps DisconnectConnection Customer PowerDisconnect Switch Transformer Power Block Fuse Blocks TransformerTable 24 Liebert XD Chiller dimensions, weight 4.11 Liebert XDC Standard Features4.11.1 Liebert XDC Optional Features Figure 56 Liebert XDC dimensional dataTable 25 Liebert XD Chiller piping connection sizes Figure 57 Liebert XDC piping locationsTable 26 Liebert XDC Water/Glycol Piping Connection Sizes Figure 59 Piping locations-floor stand and valve assembly 10-1/26-1/2 Figure 60 Front view of Liebert XDC and electrical enclosures Knockout for Input Power Enclosure Cover Not Shown for ClaritySwitch SwitchTransformer Fuse Block Figure 64 Liebert XDC high voltage connections-secondary disconnect switch, 60Hz models User Interface Wall Box Wiring Temperature/Humidity Sensor Wiring Figure 68 Liebert XDC Extra Low Voltage field connections points Table 27 Liebert XDC160 specifications 5.0 SPECIFICATIONSModels - 60 Hz Table 28 Floor stand specifications-water-cooled Liebert XDCModels - 60 Hz XDC160 Water Floor Stand - 60HzHeat Rejection Equipment Models - 60 HzXDC160 Glycol Floor Stand - 60Hz - 40% EG Performance DataSpecifications Table 31 Liebert XDP160 specificationsSpecifications Table 32 Liebert XDO16 specificationsSpecifications Table 33 Liebert XDO20 specificationsTable 34 Liebert XDO20 dimensions-domestic and export Table 35 Liebert XDO16 dimensions-domestic and exportIncludes piping connections Table 36 Liebert XDV8 specifications Table 37 Liebert XDV10 specifications Specifications Table 38 Liebert XDV8 dimensions-domestic and exportTable 39 Liebert XDV10 dimensions-domestic and export Table 40 Liebert XDCF specificationsTable 41 Liebert XDH specifications ModelsNumber of Fans Specifications Specifications Page ti n Ensuring The High Availability0f Mission-Critical Data And Applications Ne t