System Design Manual
Liebert Xtreme Density
Precision Cooling
For Business-Critical Continuity
Page
1.0 SYSTEM DESCRIPTION
TABLE OF CONTENTS
5.0 SPECIFICATIONS
FIGURES
XDH AND LIEBERT XDCF
4.0 LIEBERT XD COOLING MODULES-LIEBERT XDO, LIEBERT XDV, LIEBERT
Figure 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
Enthalpy
Pressure
Figure 1 Pressure enthalpy diagram - refrigerant
1.0 SYSTEM DESCRIPTION
Figure 2 Direct system configuration-hydraulic system diagram
1.2 Direct and Indirect System Configurations
Figure 3 Indirect system configuration-hydraulic system diagram
1.1 European Union Fluorinated Greenhouse Gas Requirements
1.3 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 XDCF
1.7 Liebert XDA-Air Flow Enhancer
1.8.1 Liebert XDP Minimum Load
1.8 Liebert XDP-Pumping Unit
Figure 10 Liebert XDP pumping unit
1.9.1 Liebert XDC Minimum Load
1.9 Liebert XDC-Refrigerant Chiller
Figure 11 Liebert XD Chiller unit
1.10 Liebert XD Piping
Liebert XD field-installed port kits header connection size
1.10.1 Liebert XD Field Piping Flexible Piping Kit
Prefabricated Headers
2.0 STARTING A NEW EQUIPMENT COOLING PROJECT
2.1 Determining Cooling Equipment Needs
Figure 13 Hot aisle-cold aisle arrangement with under-floor source
2.2 Implementing a Hot-Aisle/Cold Aisle Design
3.1 Determine Cooling Requirements and Select Liebert XD System
3.0 DESIGNING A LIEBERT XD SOLUTION
3.2 Calculate the Heat Load to be Handled by Liebert XD System
3.5 Configuring a Liebert XD System
3.4 Airflow Requirements for Liebert XD Solutions
3.3 Selecting Liebert XD Cooling Modules
3.5.1 Number of Modules Supported by a Liebert XDP or Liebert XDC
Figure 14 Liebert XDO placement over cold aisle
3.6 Liebert XDO Placement
3.6.1 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 Placement
Figure 17 Liebert XDCF unit mounting locations
3.8 Liebert XDCF Placement
3.10 Liebert XDP/Liebert XDC Placement
3.9 Liebert XDH Placement
Figure 18 Liebert XDH placement
Cold Aisle
for enhanced protection
Interlaced piping arrangement
Interlaced piping
Interlaced piping arrangement for enhanced protection
arrangement
for enhanced
3.13 Liebert XD Piping System Design
3.12 Liebert XD Refrigerant
Example
20ft 6.7m max
Supply, return pipe sizes for refrigerant loop
9ft 2.7m max Liebert XDP/ Liebert XDC
Liebert XD Cooling Modules
3.14 Liebert XD Piping Slope
Figure 24 Hydraulic diagram
3.15 Bypass Flow Controllers
Liebert XDC
Liebert XDP or Liebert XDC
Figure 25 Bypass flow controller details, dimensions
Figure 26 Bypass flow controller arrangement
Figure 27 Bypass flow controller piping
3.16.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume
3.16 Determining Refrigerant Volume
System refrigerant charge for the supply and return mains
Refrigerant Charge, lb. kg
Metal Flex Pipe Connector Length
Supply Line Diameter 1/2
Return Line Diameter 5/8
3.16.2 Calculating Refrigerant Charge-Example
3.17 Liebert XDC DX R-407c Circuit Volume-Air Cooled Units
Table 11 Calculating refrigerant charge-example
Table 12 Worksheet to calculate refrigerant charge
3.18 Chilled Water Piping
3.20 Display Panel and Remote Temperature/Humidity Sensor Locations
3.19 Electrical
Table 14 Outdoor condenser charge-R-407c
4.1.1 Optional Features Liebert XDO
4.1 Liebert XDO Standard Features
Figure 29 Dimensional data-Liebert XDO with pre-charged option
Figure 28 Dimensional data-Liebert XDO hard-piped units
Left Side
of XDO 24-1/8
Figure 30 Liebert XDO internal mounting location
Mounting Hole Knockouts for High-Voltage Wiring FRONT OF XDO
4.2 Liebert XDV Standard Features
TOP OF XDO Mounting Hole Knockouts for Low-Voltage Wiring
Figure 31 Liebert XDO top and front electrical access points
Figure 32 Liebert XDV dimensions
4.2.1 Optional Features-Liebert XDV
Detail Area “A”
Figure 33 Liebert XDV dimensions with one-shot connection
Detail “A”
Supply Connection 1/2
POWER SOURCE
Knockout for Optional Wiring Primary and Secondary Power Cords
60Hz MODELS ONLY FIELD WIRING CONNECTIONS AT TERMINAL STRIP
TO BE N.E.C. CLASS USE SWITCH CONTACTS WITH 75 V.A MINIMUM
Secondary Power Inlet
Voltage Connections Knockout for Optional Wiring IEC Primary and
Rear of XDV Right Side of XDV Condensate Detection Dry Contacts - Low
Rear of XDV
Figure 37 Suspending single Liebert XDV from the roof structure
Figure 36 Suspending single Liebert XDV from Unistruts
Attach hanger brackets
Figure 39 Liebert XDCF hydraulic diagram
4.3 Liebert XDCF Standard Features
Liebert XDC
or Liebert XDP
NETWORK POWER
Figure 40 Overall dimensions
4.4 Liebert XDCF Mechanical Considerations
Liebert TM XD
4.6 Liebert XDCF Piping Connection Methods and Points
4.5 Liebert XDCF Installation Considerations
Figure 41 Liebert XDCF unit mounting locations
4.7.1 Optional Features-Liebert XDH
4.7 Liebert XDH Standard Features
Figure 42 Liebert XDCF supply and return piping access points
4.6.1 Header System
Top of Liebert XDH
Figure 43 Liebert XDH dimensions
Detail “A”
Rear
seen from end
Return Main
2-1/8 O.D
Or 2-5/8 O.D
Table 17 Liebert XD Flex Pipe assemblies, supply and return
4.8 Liebert XD Flex Pipe Kit
4.9.1 Piping Installation Method prefabricated headers
4.9 Liebert XD Piping Dimensions and Features
Supply
Return
Return
Supply
Table 20 Five-port prefabricated piping legend
Page 3, Rev
Return
Supply
ODS ODR 120 Ref. 3048mm
7-7/16 Ref. Typ
Unit Dimensional Data
4.10 Liebert XDP Standard Features
Figure 50 Liebert XDP dimensions
Table 22 Liebert XDP dimensions
Table 23 Unit piping outlet connection sizes, inches, OD Cu
Figure 51 Liebert XDP piping access points and external features
Status Lamps
Switch
Disconnect
User Interface
Disconnect Switch
Customer Power
Transformer Power Block Fuse Blocks Transformer
Connection
4.11.1 Liebert XDC Optional Features
4.11 Liebert XDC Standard Features
Figure 56 Liebert XDC dimensional data
Table 24 Liebert XD Chiller dimensions, weight
Table 25 Liebert XD Chiller piping connection sizes
Figure 57 Liebert XDC piping locations
Table 26 Liebert XDC Water/Glycol Piping Connection Sizes
10-1/2
Figure 59 Piping locations-floor stand and valve assembly
6-1/2
Switch
Knockout for Input Power Enclosure Cover Not Shown for Clarity
Switch
Figure 60 Front view of Liebert XDC and electrical enclosures
Transformer 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 SPECIFICATIONS
Models - 60 Hz
Table 28 Floor stand specifications-water-cooled Liebert XDC
XDC160 Water Floor Stand - 60Hz
Models - 60 Hz
XDC160 Glycol Floor Stand - 60Hz - 40% EG
Models - 60 Hz
Performance Data
Heat Rejection Equipment
Specifications
Table 31 Liebert XDP160 specifications
Specifications
Table 32 Liebert XDO16 specifications
Specifications
Table 33 Liebert XDO20 specifications
Table 35 Liebert XDO16 dimensions-domestic and export
Table 34 Liebert XDO20 dimensions-domestic and export
Includes piping connections
Table 36 Liebert XDV8 specifications
Table 37 Liebert XDV10 specifications
Table 39 Liebert XDV10 dimensions-domestic and export
Table 38 Liebert XDV8 dimensions-domestic and export
Table 40 Liebert XDCF specifications
Specifications
Models
Table 41 Liebert XDH specifications
Number of Fans
Specifications
Specifications
Page
0f Mission-Critical Data And Applications
Ensuring The High Availability
Ne t
ti n
Precision Cooling
For 
Liebert® Xtreme Density™
System Design Manual 
