Emerson Liebert Xtreme Density User Manual

Precision Cooling
For Business-Critical Continuity™

Liebert® Xtreme Density

System Design Manual

™

TABLE OF CONTENTS

1.0 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1 European Union Fluorinated Greenhouse Gas Requirements . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Direct and Indirect System Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Liebert XDO—Overhead Cooling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Liebert XDV—Vertical, Above-Cabinet Cooling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.5 Liebert XDH—Horizontal Cooling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.6 Liebert XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.7 Liebert XDA—Air Flow Enhancer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.8 Liebert XDP—Pumping Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.8.1 Liebert XDP Minimum Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.9 Liebert XDC—Refrigerant Chiller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.9.1 Liebert XDC Minimum Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.10 Liebert XD Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.10.1 Liebert XD Field Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.0 STARTING A NEW EQUIPMENT COOLING PROJECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1 Determining Cooling Equipment Needs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2 Implementing a Hot-Aisle/Cold Aisle Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.0 DESIGNING A LIEBERT XD SOLUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1 Determine Cooling Requirements and Select Liebert XD System . . . . . . . . . . . . . . . . . . . . 13

3.2 Calculate the Heat Load to be Handled by Liebert XD System . . . . . . . . . . . . . . . . . . . . . . 13

3.3 Selecting Liebert XD Cooling Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.4 Airflow Requirements for Liebert XD Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.5 Configuring a Liebert XD System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.5.1 Number of Modules Supported by a Liebert XDP or Liebert XDC . . . . . . . . . . . . . . . . . . . . . 14

3.6 Liebert XDO Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.6.1 Determining Spacing of Liebert XDOs in an Aisle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.6.2 Determining Vertical Placement of Liebert XDOs Above the Cold Aisle . . . . . . . . . . . . . . . . 16

3.7 Liebert XDV Unit Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.8 Liebert XDCF Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.9 Liebert XDH Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.10 Liebert XDP/Liebert XDC Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.11 Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules. . . . . . 20

3.12 Liebert XD Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.13 Liebert XD Piping System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.14 Liebert XD Piping Slope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.15 Bypass Flow Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.16 Determining Refrigerant Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.16.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.16.2 Calculating Refrigerant Charge—Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.17 Liebert XDC DX R-407c Circuit Volume—Air Cooled Units . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.18 Chilled Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.19 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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3.20 Display Panel and Remote Temperature/Humidity Sensor Locations . . . . . . . . . . . . . . . . . 29

4.0 LIEBERT XD COOLING MODULES—LIEBERT XDO, LIEBERT XDV, LIEBERT

XDH AND LIEBERT XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4.1 Liebert XDO Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.1.1 Optional Features Liebert XDO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.2 Liebert XDV Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.2.1 Optional Features—Liebert XDV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.3 Liebert XDCF Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.4 Liebert XDCF Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.5 Liebert XDCF Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.6 Liebert XDCF Piping Connection Methods and Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.6.1 Header System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.7 Liebert XDH Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.7.1 Optional Features—Liebert XDH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.7.2 Piping Connections to Liebert XDP or Liebert XDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.8 Liebert XD Flex Pipe Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.9 Liebert XD Piping Dimensions and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.9.1 Piping Installation Method prefabricated headers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.10 Liebert XDP Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.11 Liebert XDC Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4.11.1 Liebert XDC Optional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5.0 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

FIGURES

Figure 1 Pressure enthalpy diagram - refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2 Direct system configuration—hydraulic system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Figure 3 Indirect system configuration—hydraulic system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Figure 4 Suspended Liebert XDO modules in hot aisle-cold aisle arrangement . . . . . . . . . . . . . . . . . . . . . . 3

Figure 5 Top-mounted Liebert XDV modules with fixed piping in hot aisle-cold aisle arrangement. . . . . . 4

Figure 6 Top-mounted Liebert XDV modules with flexible piping in hot aisle-cold aisle arrangement. . . . 4

Figure 7 Liebert XDH—horizontal cooling module in hot aisle-cold aisle arrangement . . . . . . . . . . . . . . . . 5

Figure 8 Liebert XDCF units on BladeFrame EX cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 9 Liebert XDA—air flow enhancer—on Liebert Foundation enclosure . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 10 Liebert XDP pumping unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 11 Liebert XD Chiller unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 12 Liebert XD connection port kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 13 Hot aisle-cold aisle arrangement with under-floor source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 14 Liebert XDO placement over cold aisle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 15 Liebert XDO spacing—horizontal and vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 16 Positioning Liebert XDV on top of cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 17 Liebert XDCF unit mounting locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 18 Liebert XDH placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 19 Liebert XDV units mounted on racks emitting 3kW of heat, top view . . . . . . . . . . . . . . . . . . . . . 20

Figure 20 Liebert XDV units mounted on racks emitting 5kW of heat, top view . . . . . . . . . . . . . . . . . . . . . 20

Figure 21 Liebert XDV units mounted on racks emitting 8kW of heat top view . . . . . . . . . . . . . . . . . . . . . . 21

Figure 22 Liebert XDV units mounted on racks emitting 16kW of heat top view . . . . . . . . . . . . . . . . . . . . . 21

Figure 23 Piping for Liebert XDP/Liebert XDC used with Liebert XD cooling units . . . . . . . . . . . . . . . . . . 23

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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 45 Hard-pipe connection diagram for Liebert XDV, Liebert XDO and Liebert XDH

cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 46 Two-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 47 Four-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 48 Five-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 49 Ten-port prefabricated piping for Liebert XD cooling modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 50 Liebert XDP dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 51 Liebert XDP piping access points and external features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 52 Front view of Liebert XDP and electrical enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 53 Liebert XDP electrical enclosure knockout locations for field wiring . . . . . . . . . . . . . . . . . . . . . . 53

Figure 54 Liebert XDP 60Hz high voltage connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 55 Liebert XDP 50Hz high voltage connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 56 Liebert XDC dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 57 Liebert XDC piping locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Figure 58 Positioning a water/glycol Liebert XDC for placement on a floor stand . . . . . . . . . . . . . . . . . . . . 57

Figure 59 Piping locations—floor stand and valve assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Figure 60 Front view of Liebert XDC and electrical enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 61 Liebert XDC electrical enclosure knockout locations for field wiring . . . . . . . . . . . . . . . . . . . . . . 59

Figure 62 Liebert XDC high voltage connections—primary disconnect switch, 60Hz models . . . . . . . . . . . 60

Figure 63 Liebert XDC high voltage connections—primary disconnect switch, 50Hz models . . . . . . . . . . . 60

Figure 64 Liebert XDC high voltage connections—secondary disconnect switch, 60Hz models . . . . . . . . . . 61

Figure 65 Liebert XDC high voltage connections—secondary disconnect switch, 50Hz models . . . . . . . . . . 61

Figure 66 Liebert XDC heat rejection electrical connection points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Figure 67 Liebert XDC electrical enclosure knockout locations for Extra Low Voltage connections . . . . . . 62

Figure 68 Liebert XDC Extra Low Voltage field connections points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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TABLES

Table 1 Liebert XD field-installed port kits header connection size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 2 Maximum and minimum modules supported by a Liebert XDP or Liebert XDC . . . . . . . . . . . . . 14

Table 3 Calculating quantity and spacing of Liebert XDO modules (example below is Liebert

XDO20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 4 Determine required number of Liebert XDV modules (example below is Liebert XDV10) . . . . . 17

Table 5 Supply, return pipe sizes for refrigerant loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 6 Bypass flow controllers for Liebert XDC- or Liebert XDP-based systems . . . . . . . . . . . . . . . . . . . 24

Table 7 System R-134a charge for a Liebert XDP/Liebert XDC with any model Liebert XDH/

Liebert XDO/Liebert XDV/Liebert XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 8 System refrigerant charge for the supply and return mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 9 R-134a refrigerant charge for hard-piped connector lines to and from any model

Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 10 R-134a refrigerant charge for Flex Pipe connector lines to and from any model

Liebert XDO/Liebert XDH/Liebert XDV/Liebert XDCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 11 Calculating refrigerant charge—example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 12 Worksheet to calculate refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 13 Indoor unit refrigerant charge—R-407c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 14 Air cooled systems - liquid line charge - R-407c refrigerant per 100 ft (30 m) of Type "L"

copper tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 15 Indoor water/glycol cooled module – R-407c refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 16 Outdoor condenser charge—R-407c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 17 Liebert XD Flex Pipe assemblies, supply and return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Table 18 Two-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 19 Four-port prefabricated piping legend. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 20 Five-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 21 Ten-port prefabricated piping legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 22 Liebert XDP dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table 23 Unit piping outlet connection sizes, inches, OD Cu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Table 24 Liebert XD Chiller dimensions, weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Table 25 Liebert XD Chiller piping connection sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 26 Liebert XDC Water/Glycol Piping Connection Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 27 Liebert XDC160 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 28 Floor stand specifications—water-cooled Liebert XDC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Table 29 Floor stand specifications—Liebert XDC with 40% propylene glycol . . . . . . . . . . . . . . . . . . . . . . 65

Table 30 Floor stand specifications—Liebert XDC with 40% ethylene glycol . . . . . . . . . . . . . . . . . . . . . . . 66

Table 31 Liebert XDP160 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Table 32 Liebert XDO16 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Table 33 Liebert XDO20 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Table 34 Liebert XDO20 dimensions—domestic and export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Table 35 Liebert XDO16 dimensions—domestic and export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Table 36 Liebert XDV8 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Table 37 Liebert XDV10 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Table 38 Liebert XDV8 dimensions—domestic and export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 39 Liebert XDV10 dimensions—domestic and export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Table 40 Liebert XDCF specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Table 41 Liebert XDH specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

73

iv

1.0 SYSTEM DESCRIPTION

Enthalpy

Pressure

Liquid Liquid/Vapor Mix Vapor

Traditional

Vapor

Compression

Cycle

Pumped

Two -Phase

Cycle

XD CoolFrame, XDH,

XDO, XDV

The Liebert XD™ family of cooling units delivers efficient, sensible cooling to high-heat environ­ments. Liebert XD systems are designed to cool computer racks and hot zones in a data center or com­puter room without taking up expensive floor space for cooling components.

The Liebert XD family includes:

• Liebert XDC—Liebert XD Chiller; cools and pumps refrigerant to cooling modules

• Liebert XDP—Liebert XD Pumping unit; pumps refrigerant to cooling modules

• Liebert XDA—mounts on the rear of the equipment cabinet

• Liebert XDCF—mounts on the rear of an Egenera BladeFrame EX cabinet

• Liebert XDH—Liebert XD Horizontal row cooler; integrated into hot aisle-cool aisle room layout

• Liebert XDO—Liebert XD Overhead unit, suspended from the ceiling structure

• Liebert XDV—Liebert XD Vertical unit; mounted on top of the equipment cabinet or suspended
from the ceiling structure

Systems combining Liebert XDO and Liebert XDV units can remove more than 20 kW (5.7 tons) of
heat per cabinet. A set of Liebert XDCF modules also can remove 20kW (5.7 tons) of heat from an
Egenera BladeFrame EX cabinet. A system with Liebert XDH units can remove more than 30kW
(8.5tons) of heat per rack.

For minimum Liebert XDP and Liebert XDC load recommendations, see 1.8.1 - Liebert XDP Mini-
mum Load; 1.9.1 - Liebert XDC Minimum Load; and Tables 27 and 31.

System Description

The Liebert XD system also performs at high efficiency rates. Properly spaced cooling modules and
the Liebert XD system’s fluid phase change technology, combine to reduce a Liebert XD system’s
energy consumption to at least 27 percent less than a traditional cooling system.

The Liebert XD family maintains this energy efficiency by employing the heat absorption properties
of a liquid (pumped refrigerant) through a phase change. Refrigerant is pumped as a liquid, becomes
a gas within the heat exchangers of the cooling modules (either the Liebert XDCF, Liebert XDH, Lie­bert XDO or Liebert XDV) and then is returned to either the Liebert XDP or Liebert XDC where it
condenses to a liquid. This eliminates the compression cycle required by traditional systems. And, if a
leak were to occur, the environmentally friendly refrigerant would escape as a gas, causing no harm
to critical equipment (see Figure 1). Because no compressor is used in the circuit, no oil is needed.

Figure 1 Pressure enthalpy diagram - refrigerant

1

1.1 European Union Fluorinated Greenhouse Gas Requirements

Pump ed

Refrigerant

Supply Piping

Return Pipi ng

Pump ed

Refrigerant

Liebert XDC

Liebert XDC

Liebert XD

Cooling Module*

Liebert Heat

Rejection

Air Cooled or

Water/Glycol

Cooled

Liebert XD

Cooling Module*

Liebert XD

Cooling Module*

Liebert XD

Cooling Module*

* Liebert XDCF,

Liebert XDH, Liebert
XDO or Liebert XDV

Direct Liebert XD System Configuration

Pumping and control are performed by chiller.

Liebert

XDP

Liebert XD

Cooling Module *

Liebert XD

Cooling Module *

Building

Chille d

Water

Liebert

XDP

Liebert XD

Cooling Module *

Supply Piping

Return Piping

Pumped

Refrigerant

Pumped

Refrigerant

* Liebert XDCF,

Liebert XDH, Liebert
XDO or Lie bert XD V

Indirect Liebert XD System Configuration
Liebert XDPs pump refrigerant to Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV
modules, isolate refrigerant circuit from building chilled water supply with an internal
heat exchanger and maintains refrigerant temperature above the actual dew point.

Stationary air conditioning, refrigeration, heat pump equipments and stationary fire protection sys­tems in the European Community market and operating with fluorinated greenhouse gases (f-gas),
such as R407C, R134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas).
The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmo­sphere.

The F-Gas Regulation requires operators to use use all measures that are technically feasible and do
not entail disproportionate cost to prevent leakage of these gases, to test for leakage regularly and to
recover f-gas before disposing of equipment, as well as during service and maintenance.

Refer to the full regulation for additional details.

1.2 Direct and Indirect System Configurations

Liebert XD systems are available in Direct and Indirect configurations—differentiated essentially
by the method of heat rejection (see Figures 2 and 3). The indirect system uses a pumping unit con­nected to a building chilled water system to control and circulate the refrigerant. In the direct system,
the pumping functions are incorporated in the chiller, which must be connected to a separate heat
rejection system.

Figure 2 Direct system configuration—hydraulic system diagram

System Description

Figure 3 Indirect system configuration—hydraulic system diagram

2

1.3 Liebert XDO—Overhead Cooling Module

Cold Aisle

Cold Aisle

Cold Aisle

Hot Aisle

Hot Aisle

Hot aisles and cold aisles
alternate, taking advantage
of airflow properties to
increase cooling efficiency

The Liebert XDO ceiling-mounted cooling module draws in hot air rising from densely populated cab­inets, passes it over the Liebert XDO’s coils and exhausts cooled air downward into the cold aisle. The
unit is available with optional, flexible metal pipes with quick-connect couplings at each end for easy
connection to the refrigerant distribution pipes.

Figure 4 Suspended Liebert XDO modules in hot aisle-cold aisle arrangement

System Description

3

1.4 Liebert XDV—Vertical, Above-Cabinet Cooling Module

Hot aisles and cold aisles
alternate, taking advantage
of airflow properties to
increase cooling efficiency

Cold Aisle

Cold Aisle

Cold Aisle

Hot Aisle

Hot Aisle

Hot aisles and cold aisles alternate,
taking advantage of airflow properties
to increase cooling efficiency

Cold Aisle

Cold Aisle

Hot Aisle

Hot Aisle

The Liebert XDV is installed on top of or above a rack enclosure. It is available with optional flexible
metal pipes with automatic shutoff with quick-connect couplings at the ends for easy connection to
the refrigerant distribution pipes. The Liebert XDV may be set up in either of two ways:

• The Liebert XDV can take hot air directly from an equipment enclosure, cool the air and dis­charge it downward into the cold aisle.

OR

• The Liebert XDV can draw hot air from the room, cool the air and discharge the cool air down­ward into the cold aisle.

System Description

Figure 5

Top-mounted Liebert XDV modules with fixed piping in hot aisle-cold aisle arrangement

Figure 6 Top-mounted Liebert XDV modules with flexible piping in hot aisle-cold aisle

arrangement

4

1.5 Liebert XDH—Horizontal Cooling Module

The Liebert XDH cooling module is designed to be placed within a row of server enclosures in a
hot aisle-cold aisle arrangement. The Liebert XDH has dual refrigeration circuits and is available in a
half-rack-width unit. The Liebert XDH is intended for use with a Liebert XD pumped refrigerant cool­ing system, supplied by either a Liebert XDP or Liebert XDC.

The Liebert XDH is available with optional, flexible metal pipes with quick-connect couplings at each
end for easy connection to the refrigerant distribution pipes.

Figure 7 Liebert XDH—horizontal cooling module in hot aisle-cold aisle arrangement

System Description

5

1.6 Liebert XDCF

The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room. Two modules (top and bottom) may be mounted on
the rear of a BladeFrame cabinet. CF modules consist of a sheet-metal frame, coil and filter dryer. It
has no moving parts and needs no electricity.

The unit is available with optional, flexible metal pipes with quick-connect couplings at each end for
easy connection to the refrigerant distribution pipes.

Figure 8 Liebert XDCF units on BladeFrame EX cabinets

System Description

6

1.7 Liebert XDA—Air Flow Enhancer

The Liebert XDA is a fan unit that boosts the airflow through densely populated enclosures, removing
hot spots from within the racks. One or two units can be mounted on the rear of most rack enclosures.

Figure 9 Liebert XDA—air flow enhancer—on Liebert Foundation enclosure

System Description

7

1.8 Liebert 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 mod­ules 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 temper­ature and humidity in the air and instantly adjusts refrigerant supply temperature to compensate for
changing conditions.

1.8.1 Liebert 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

System Description

8

1.9 Liebert XDC—Refrigerant Chiller

The Liebert XDC is an indoor chiller that connects directly to the Liebert XD cooling modules and pro­vides 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.

1.9.1 Liebert 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

System Description

9

1.10 Liebert XD Piping

Return valve shown
Supply valve appearance
is similar, but is smaller

Liebert XD Piping is prefabricated distribution piping that is installed in anticipation of a growing sys­tem. Liebert XD cooling modules are added as required and are quickly made operational with flexible
connection piping with threaded couplings. This unique system allows the room cooling capacity to
increase to more than 30kW per rack with no additional disruptive piping installation. The flexible
connection piping also allows the cooling modules to be re-positioned without interruption in operation.

1.10.1 Liebert XD Field Piping

Flexible Piping Kit

Flex pipe kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Connection
style to the module end may be straight or 90 degrees with one-shot style couplings or removable cou­plings. Connection to the prefabricated piping assembly is a threaded coupler. For information on
acquiring the correct kit for your installation refer to DPN000780_Rev1, available by calling
1-800-LIEBERT and from your local Emerson Network Power representative.

Prefabricated Headers

Field piping kits are available in several versions

• 10 ft. (3.05m) with five or 10 ports

• 8 ft. (2.44m) with two or four ports

Each version is available in two pipe sizes:

• Supply pipe: 1-1/8"; return pipe: 2-1/8"

• Supply pipe: 1-3/8"; return pipe: 2-5/8"

Each kit contains supply pipe(s) and return pipe(s). Each port has a threaded coupling at the end with
automatic shutoff when disconnected. Each port also has a ball valve for manual shutoff. For more
information refer to section 4.9 - Liebert XD Piping Dimensions and Features.

System Description

Liebert XD Connection Port Kit

The connection ports in the Liebert XD Field Piping Kits are available as Liebert XD Connection Port
Kit. Each port has a threaded coupling, with automatic shutoff when disconnected, at the end. Each
port also has a ball valve for manual shutoff. Each kit contains one supply and one return port. Two
kit sizes are available:

• Supply pipe: 1-1/8"; return pipe: 2-1/8"

• Supply pipe: 1-3/8"; return pipe: 2-5/8"

Figure 12 Liebert XD connection port kit

Table 1 Liebert XD field-installed port kits header connection size

Assembly P#

183169G3 1-1/8" 2-1/8"

183169G4 1-3/8" 2-5/8"

Supply Header

Diameter

Return Header

Diameter

10

2.0 STARTING A NEW EQUIPMENT COOLING PROJECT

2.1 Determining Cooling Equipment Needs

1. Is adequate space available for a Liebert XD installation?

2. Is the hot aisle/cold aisle approach being utilized for this room design or can it
be utilized in this room design?

3. Is redundant cooling equipment required?

4. Are there access considerations for all components (possible rigging problems)

5. What heat load growth is anticipated over the next few years?

6. How are the cabinets going to be populated (density of heat generation)?

7. What monitoring requirements are desired or needed?

8. Who will be involved in this project (stakeholders)?

9. Is there existing computer room environmental cooling systems for humidity
control and filtration?

10. Is the vapor barrier sufficient?

11. Is a chilled water system available?

a. What is the system’s capacity?

b. What is the system’s chilled water supply temperature?

Starting a New Equipment Cooling Project

c. Does the chilled water supply temperature vary during the year or is the

temperature constant?

12. How much power is available for cooling equipment?

13. What is the maximum distance between the Liebert XDP/Liebert XDC unit
and the farthest Liebert XD cooling module in the proposed layout?

14. If an air cooled Liebert XDC is used – is an area available for the remote
condenser?

11

2.2 Implementing a Hot-Aisle/Cold Aisle Design

Cold air supplied
through perforated
floor tiles is drawn
into racks

Heated air expelled from
racks is drawn into
cooling unit and returned
to floor supply

A best practice is to use rows of equipment racks in an alternating arrangement of cold aisles and hot
aisles. This is best accomplished when the layout of the file-server farm area is first being planned,
and it is exceedingly more difficult to accomplish when the computer room is already populated with
operating hardware.

In the cold aisle, the equipment racks are arranged face to face so the cooling air discharged up
through the perforated floor tiles is drawn into the face of the computer hardware and exhausted out
the back of the equipment rack onto the adjacent hot aisles.

Hot aisles are literally hot because the objective of the alternating cold and hot aisle design is to sepa­rate the source of cooling air from hot air discharge which returns to the computer-room cooling unit.
Therefore, no perforated tiles should be placed in the hot aisles. as this would mix hot and cold air and
thereby lower the temperature of the air returning to the cooling units, which reduces their usable
capacity.

Figure 13 Hot aisle-cold aisle arrangement with under-floor source

Starting a New Equipment Cooling Project

12

Designing a Liebert XD Solution

3.0 DESIGNING A LIEBERT XD SOLUTION

Liebert XD systems are intended for use with precision air conditioning equipment, such as the Lie­bert Deluxe System/3 and Liebert DS. The precision air conditioning equipment is required to control
the room’s humidity and to filter the air.

The Liebert XD systems provide efficient, highly effective heat removal (sensible cooling only), and
provide no dehumidification. The Liebert XD control system maintains the refrigerant temperature
just above the dew point of the space to prevent condensation. Since the capacity of the system is lim­ited by the dew point in the space, sufficient dehumidification and an adequate vapor barrier must be
provided to maintain the dew point at or below the level necessary to achieve the required capacity.

The Liebert XD system is optimized for hot aisle/cold aisle equipment configurations, the industry’s
most highly recommended method for dealing with extremely high heat loads.

Refer to the technical data manual of either the Deluxe System/3 (SL-18100) or the
Liebert DS (SL-18810) for additional installation and application guidelines that apply to all critical
space cooling applications.

3.1 Determine Cooling Requirements and Select Liebert XD System

1. Calculate the total cooling required

2. Determine placement of the Liebert XD units

3. Determine required pipe sizes

4. Calculate the refrigerant volume of the Liebert XD systems

5. Complete design details including, electrical, mounting, piping, etc.

3.2 Calculate the Heat Load to be Handled by Liebert XD System

When designing a cooling solution using the Liebert XD system, the initial steps are similar to those
required to cool a conventional critical space. The total heat load must be calculated, including sensi­ble and latent cooling requirements. These should be increased by the reserve capacity needed for
pull-down situations where the room temperature must be reduced and to provide for unexpected
increases in heat load.

NOTE

Reserve capacity is distinct from redundant capacity in that redundant capacity may or may
not be available concurrently with normal operating capacity. Reserve capacity is available
concurrently with normal operating capacity.

The next step is to determine how much of the required cooling capacity is to be provided by Liebert
Deluxe or Liebert DS units. If the facility is new, typically up to 150 watts per square foot (1500W/m
of cooling can be obtained from Liebert precision air conditioning units supplying air through a raised
floor. In existing facilities, such factors as raised floor height, under-floor obstructions or other limita­tions may reduce this to less than 50 watts per square foot (500 watts per m

Once the total required sensible cooling capacity is known, subtract the sensible cooling portion to be
provided by Liebert Deluxe or Liebert DS units. This yields the cooling capacity to be provided by the
Liebert XD system.

2

)

2

).

13

3.3 Selecting Liebert XD Cooling Modules

The next step is to select the Liebert XD cooling modules to be configured into the solution. Liebert
XD modules that use pumped refrigerant can be connected to the same Liebert XDP/Liebert XDC pip­ing circuit. This includes the Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV.

Generally, the Liebert XDO is selected for use in new installations or renovations where the unit can
be installed on the ceiling or in the overhead space.

The Liebert XDV is designed to permit mounting directly on top of an equipment cabinet, for ease of
installation in existing facilities. The Liebert XDV may also be suspended from overhead, using suit­able mounting methods.

The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room. Two modules may be mounted on the rear of a
BladeFrame cabinet.

The Liebert XDH is installed among equipment cabinets and is particularly suited to new installa­tions.

3.4 Airflow Requirements for Liebert XD Solutions

Computer manufacturers typically specify a temperature change from intake to exhaust (delta T) of
18-27°F (10-15°C) for the air passing through a rack enclosure. The heat generated by electronic
equipment combined with the tight quarters of equipment cabinets mean that high volumes of air
must move through an enclosure to meet this cooling specification.

A Liebert XD system can supply the cooled air to satisfy this cooling demand, but airflow through the
enclosure must be adequate to extract the heat from the cabinet. Liebert’s XDA units can boost the
airflow to levels necessary to protect critical equipment. The Liebert XDA is particularly suited to the
hot aisle/cold aisle arrangement.

Designing a Liebert XD Solution

3.5 Configuring a Liebert XD System

3.5.1 Number of Modules Supported by a Liebert XDP or Liebert XDC

The numerals designating the model size of a Liebert XD unit may be used to configure a cooling sys­tem. For example, a Liebert XDO20 has a model size of 20 and a Liebert XDP160 will accommodate
cooling modules with a cumulative model size of 160.

Similarly, the minimum number of modules connected to a Liebert XDP or Liebert XDC may be calcu­lated using the model size number for the Liebert XDP or Liebert XDC and the modules. See Table 2.

Table 2 Maximum and minimum modules supported by a Liebert XDP or Liebert XDC

Cooling

Module Type

Liebert XDCF 16 6 16 4

Liebert XDH20 8 4 8 2

Liebert XDH32 5 2 5 1

Liebert XDO16 10 4 10 2

Liebert XDO20 8 4 8 2

Liebert XDV8 20 8 20 4

Liebert XDV10 16 7 16 4

Different types of Liebert XD cooling modules may be connected to the same Liebert XDP or Liebert
XDC as long as the sum of their cooling capacity does not exceed the supporting Liebert XDP’s or Lie­bert XDC’s model size number.

Liebert XDC Liebert XDP

Max Min Max Min

NOTE

Connecting only Liebert XDCF modules to a Liebert XD unit is not recommended because the
Liebert XDCF heat loading is dependent on server airflow and server load. Consult factory to
determine if sufficient heat load is available from the server for the Liebert XD system to
operate effectively.

14

3.6 Liebert XDO Placement

HOT AISLE

Cold Aisle Spacing

Hot air is

drawn into

the XDO for

cooling

XDOXDO

Critical

Equipment

Critical

Equipment

Critical

Equipment

Critical

Equipment

COLD AISLE

Hot air goes

into the hot

aisle

Cooled air
enters the

rack...

Hot air goes

into the hot

aisle

Cooled air
enters the

rack...

COLD AISLE

3.6.1 Determining Spacing of Liebert XDOs in an Aisle

Liebert XDO units should be placed in rows directly above the cold aisles of a room for optimum cool­ing. Each Liebert XDO serves an area equal in width to the cold aisle spacing, typically 12 to 16 feet
(3.7 to 4.9m). The length of the area served includes any space between Liebert XDO modules in a
row. Depending on the cooling capacity to be achieved, spacing between Liebert XDO modules in a
row may vary from zero to as much as 6 feet (1.8m). When the spacing increases to more than 6 feet
(1.8m), overall performance of the system may be negatively affected and gaps in cooling may occur.

Emerson recommends installing one Liebert XDO at the end of each aisle being cooled and to space
the remainder between these end units in pairs as shown in Figure 15. This layout will block the
incursion of hot air around the side of the end cabinets.

Figure 14 Liebert XDO placement over cold aisle

Designing a Liebert XD Solution

Table 3 can be used to determine the correct number and spacing of Liebert XDOs.

Table 3 Calculating quantity and spacing of Liebert XDO modules (example below is Liebert XDO20)

Input Information Step Result

Total heat load in the room, kW A

Reserve capacity needed
(10% to 25% of A is recommended)

Existing/planned Liebert Deluxe/DS unit
sensible capacity, kW

Room area, square feet H

Spacing of cold aisles, center-to-center,
typically 12-16 ft (3.7 to 4.9m)

B

C Required cooling capacity, kW = A + B

D

E Required Liebert XD system cooling capacity, kW = C – D

Number of Liebert XDO20s required = E ÷ 20, rounded up (60Hz)

F

Number of Liebert XDP

G

rounded up (60Hz and 50Hz)

I Area served by each Liebert XDO20 = H ÷ F

J

K Spacing between each Liebert XDO = (I ÷ J) - 2

L

Required Liebert XD system cooling density = E x 1000 ÷ H
OK if under 640; otherwise, additional cooling is required from
Liebert Deluxe or Liebert DS units.

15

/Liebert XDC modules required = F ÷ 8,

= E ÷ 16, rounded up (50Hz)

Designing a Liebert XD Solution

Front-to-rear spacing of
pairs of XDO modules

XDO height above
equipment to be cooled

Heat-Generating Critical Equipment

Pairs of XDO modules

above critical equipment

Liebert recom­mends install­ing one Liebert
XDO at the end
of each aisle
being cooled
and to space
the remainder
between these
“end units” in
pairs. This lay­out will block
the incursion of
hot air around
the side of the
end cabinets.

3.6.2 Determining Vertical Placement of Liebert XDOs Above the Cold Aisle

In the maximum density configuration, Emerson recommends placing the Liebert XDOs between 18
and 24 inches (457-609mm) above the equipment cabinets. In some cases where the required density
is less, the front-to-rear spacing of Liebert XDOs in a row will be increased. To ensure coverage of the
wider spaces between the Liebert XDO units, the vertical distance between the cabinets and the Lie­bert XDOs should be increased. However, the recommended maximum height of the Liebert XDO
above the cabinets is 30 inches (762mm). See Figures 15.

Figure 15 Liebert XDO spacing—horizontal and vertical

16

3.7 Liebert XDV Unit Placement

INCORRECT

Liebert XDV

hangs over front

edge of rack

INCORRECT

Liebert XDV is

too far from front

edge of rack

CORRECT

Liebert XDV is flush with

front edge of rack

X

Liebert XDV is suspended
from ceiling structure. ..

X

....the separation

between the rack and
the Liebert XDV
should be held to
less than 1" (25mm).
If this is not possible,
an air blocker should
be added to prevent
unwanted airflow
between the hot aisle
and the cold aisle.

Liebert XDV units should be placed on top of the cabinets that generate the greatest amount of heat.
If heat loads are dispersed evenly throughout the room, the Liebert XDV modules may be spread out
accordingly.

The Liebert XDV must be placed toward the front of the equipment cabinet, so that its front bottom
edge is flush with the front top edge of the cabinet. Placing the unit farther back on the top of the unit
will restrict airflow into the cold aisle. Placing the unit farther to the front will decrease the amount
of hot air drawn into the unit.

Figure 16 Positioning Liebert XDV on top of cabinet

Designing a Liebert XD Solution

Both of the Liebert XDV’s power cords should be connected to power sources. If only one power source
is available, then only the power cord labeled “SECONDARY” should be connected to the power
source.

Piping for the Liebert XDV is routed upward to the main return and supply pipes to and from the Lie­bert XDP/Liebert XDC.

Table 4, below, may be used to determine the correct number of Liebert XDV modules.

Table 4 Determine required number of Liebert XDV modules (example below is Liebert XDV10)

Total heat load in the room, kW A
Reserve capacity needed

(10% to 25% of A is
recommended)

Existing/planned Liebert
Deluxe/DS sensible capacity, kW

Room area, square feet H

Input Information Step Results

B

C Required cooling capacity, kW = A + B

D

E Required Liebert XD system cooling capacity, kW = C – D

Number of Liebert XDV10 modules required = E ÷ 10, rounded up (60Hz)

F

Number of Liebert XDP/Liebert XDC modules required = F ÷ 16, rounded

G

up (60Hz and 50Hz)

I Area served by each Liebert XDV10 = H ÷ F

L

Required Liebert XD system cooling density = E x 1000 ÷ H
OK if under 580 for 12-foot cold aisle spacing
OK if under 435 for 16-foot cold aisle spacing
Otherwise, additional Liebert Deluxe or Liebert DS unit capacity is
needed.

17

= E ÷ 8, rounded up (50Hz)

3.8 Liebert XDCF Placement

Liebert XDCF Modules

attached to

Egenera BladeFrame EX Cabinet

Upper Module

Lower Module

The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment. Liebert XDCF modules attach to the rear of the Egenera BladeFrame EX cabinet, beside
the power modules (see Figure 17). No cutting or drilling is required to attach the modules; all
mounting holes, slots and pins required are fabricated at the factory. The Liebert XDCF does not
require electrical connections.

The number of Liebert XDCF modules required is determined by the heat load of the cabinet—cabi­nets cannot share cooling from a Liebert XDCF module.

The Egenera BladeFrame EX cabinet has provisions for mounting two Liebert XDCF modules, should
the heat load require two modules. If only one Liebert XDCF will be needed, Liebert recommends
using the lower Liebert XDCF module.

The complete system consists of Liebert XDCF modules, piping, Liebert XDP or Liebert XDC refriger­ant distribution units and those units’ chillers or drycoolers.

Figure 17 Liebert XDCF unit mounting locations

Designing a Liebert XD Solution

18

3.9 Liebert XDH Placement

X

D

H

X

D

H

X

D

H

X

D

H

X

D

H

X

D

H

X

D

H

X

D

H

Hot

Aisle

Cold
Aisle

Hot

Aisle

Cold
Aisle

X

D

H

X

D

H

X

D

H

X

D

H

X

D

H

The free-standing Liebert XDH cooling unit is best placed among the equipment cabinets in a hot
aisle-cold aisle arrangement (see Figure 18). The Liebert XDH draws in air from the hot aisle, cools
it and discharges the cooled air into the cold aisle where it is drawn into the equipment cabinets. Reg­ular spacing aids in optimizing cooling.

Liebert XDH units should be placed among the cabinets that generate the greatest amount of heat. If
heat loads are dispersed evenly throughout the room, the Liebert XDH modules may be spread out
accordingly.

If a Liebert XDH is installed at the end of a row, Liebert recommends using uni-directional air diffus­ers on that Liebert XDH. The uni-directional diffusers can be used for left or right air discharge by
removing them from the Liebert XDH, turning them 180 degrees, then reattaching them to the Lie­bert XDH.

Liebert recommends using bi-directional air diffusers on Liebert XDH modules installed between
racks.

Figure 18 Liebert XDH placement

Designing a Liebert XD Solution

3.10 Liebert XDP/Liebert XDC Placement

The Liebert XDP/Liebert XDC may be placed in the critical space or in an adjacent equipment room.
The allowable distance between the Liebert XDP/Liebert XDC and its connected cooling modules is
determined by the piping design and by the amount of refrigerant required. Refer to 3.12 - Liebert XD
Refrigerant and 3.13 - Liebert XD Piping System Design.

The maximum height of any of the main or connecting piping should be no more than 20 feet (6m)
above the top of the Liebert XDP/Liebert XDC unit. Liebert XDV/Liebert XDO modules should be
placed as close to the same level as possible. The differences in elevation between the highest and low­est Liebert XDV or Liebert XDO module in a system should be no more than 6 feet (2m).

19

Designing a Liebert XD Solution

Downflow

Cooling

Unit

Downflow

Cooling

Unit

XDVs Mounted
on Equipment Rack s

Perforated
Raised
Floor Tile s

Circuit 1

Equipment Racks
without XDVs

Downflow

Cooling

Unit

Downflow

Cooling

Unit

Equipment Racks
without XDVs

XDVs Mounted
on Equipment Ra cks

Circuit 2Circuit 1

Perforated
Raised
Floor Tile s

Interlaced piping arrangement
for enhanced protection

3.11 Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules

Figure 19 Liebert XDV units mounted on racks emitting 3kW of heat, top view

Figure 20 Liebert XDV units mounted on racks emitting 5kW of heat, top view

20

Figure 21 Liebert XDV units mounted on racks emitting 8kW of heat top view

Downflow

Cooling

Unit

Downflow

Cooling

Unit

XDVs Mounte d
on Equipment Racks

Circuit 1 Circuit 2 Circuit 3

Perforated
Raised
Floor Tiles

Interlaced piping arrangement
for enhanced protection

Downflow

Cooling

Unit

Downflow

Cooling

Unit

Perforated
Raised
Floor Tiles

XDOs Mounted
on Equipment Ra cks

Circuit 4

Circuit 5 Circuit 6

XDVs Mounted
on Equipment Ra cks

Circuit 3Circuit 1 Circuit 2

Interlaced piping
arrangement
for enhanced
protection

Designing a Liebert XD Solution

Figure 22 Liebert XDV units mounted on racks emitting 16kW of heat top view

21

3.12 Liebert XD Refrigerant

!

The refrigerant used in the Liebert XD system is HFC-134a (1,1,1,2-tetrafluoroethane), made by a
number of manufacturers. The amount of refrigerant used by the Liebert XD system may be signifi­cantly higher than in typical DX cooling systems.

CAUTION

Risk of improper oil use. Can cause equipment damage.

The Liebert XD pumped R-134a refrigerant circuits do not use refrigerant oil. Do NOT put oil
in the R-134a system.

Designing a Liebert XD Solution

All the major components of a Liebert XD system must be installed in a space with a volume of at
least 1,000 ft
dard 15-2001, Safety Standard for Refrigeration Systems. If the Liebert XDP/Liebert XDC is placed in
a separate area, such as a machine room, then this area must also meet the volume requirement.
Inside the critical space, this includes the space under the raised floor, and the space between the top
of the raised floor and the bottom of a suspended ceiling. If the suspended ceiling is all open grates,
then this additional space, up to the overhead deck, would also be included.

Example

A space is 5,000 square feet, with an 18" raised floor and an 8' 6" suspended ceiling. Liebert XDOs
and a Liebert XDP are to be placed in this raised-floor area.

The volume of the space is (1.5 + 8.5) x 5,000 or 50,000 cubic feet.
The maximum amount of R-134a refrigerant that can be used in a single Liebert XDP/Liebert

XDC/Liebert XD module system within this space is 16 * (50000/1000) = 16 * 50 = 800 lb.
Multiple Liebert XD systems can be installed in this space, as long as the amount of R-134a

refrigerant in any one system does not exceed 800 lb.

3

(28.3m3) for each 13 pounds of refrigerant in that system from Table 1, ASHRAE Stan-

NOTE

Local codes might permit exceeding the maximum refrigerant limit stated above if refrigerant
detector and an exhaust system are installed. As an alternative, oxygen sensors may be
installed to meet some local codes.

3.13 Liebert XD Piping System Design

All piping must be ASTM (American Society for Testing and Materials) Type “L” copper pipe. The typ­ical maximum operating pressure in the system is 90 psi (620kPa).

Piping for the Liebert XD system is arranged in a manner similar to piping for a chilled water system.
Liebert XD cooling modules (Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV) are connected
in parallel between the main return and supply pipes going to and from the Liebert XDP/Liebert XDC.

Figure 23 represents a typical configuration. The guidelines provided for pipe size must be
strictly followed. Failure to size the main lines and connection lines adequately may result
in reduced cooling capacity. The critical aspects of pipe sizing are related to refrigerant volume and

pressure drop. Each must be minimized.

22

Designing a Liebert XD Solution

Liebert XDP/

Liebert XDC

SLOPE—The main supply and return lines to and from the Liebert XDP/Liebert XDC
must be sloped downward toward the Liebert XDP/Liebert XDC at a rate of 1-2" per
20 feet (25.4-51mm per 6m) of pipe run. Horizontal connector lines should also be
sloped downward from the cooling modules toward the main supply and return lines.

Liebert XD
Cooling
Modules

All supply and
return mains
must be level
with or above
the top of all
Liebert XDP or
Liebert XDC
units

9ft.

(2.7m)

max.

20ft.

(6.7m)

max.

Figure 23 Piping for Liebert XDP/Liebert XDC used with Liebert XD cooling units

The assembly and connection means used for piping in the Liebert XD system are similar to that of
conventional refrigeration systems. All piping should be installed with high temperature brazed
joints. Soft solder is not recommended. The lines being brazed MUST be filled with flowing dry nitro­gen during brazing to prevent excessive oxidation and scale formation inside the piping.

Insulate all piping lines to prevent condensation in applications where the dew point approaches the
R-134a refrigerant temperature.

Please see Table 5 below for recommended pipe sizes and Figure 24 for piping segment locations.

Table 5 Supply, return pipe sizes for refrigerant loop

Key to Piping

Pipe Function

Liebert XDP supply line, from Liebert XDP supply
to farthest Liebert XD cooling module

Liebert XDP return line, from farthest Liebert XD
cooling module to Liebert XDP return

From any model Liebert XDO/Liebert XDH supply
to supply line of Liebert XDP

From any model Liebert XDO/Liebert XDH return
to return line of Liebert XDP

From any model Liebert XDV/Liebert XDCF supply
to supply line of Liebert XDP

From any model Liebert XDV/Liebert XDCF return
to return line of Liebert XDP

in Figure 24 Size / Equivalent Pipe Length

A

B

C

D

C

D

1-1/8" OD for lengths up to 60 feet

1-3/8" OD for lengths over 60 but less than 175 feet

2-1/8" OD for lengths up to 60 feet

2-5/8" OD for lengths over 60 but less than 175 feet

1/2" OD for lengths up to 10 feet

7/8" OD for lengths over 10 but less than 25 feet

7/8" OD for lengths up to 10 feet

1-1/8" OD for lengths over 10 but less than 25 feet

1/2" OD for lengths up to 10 feet

5/8" OD for lengths over 10 but less than 35 feet

5/8" OD for lengths up to 10 feet

7/8" OD for lengths over 10 but less than 35 feet

For additional information about piping connections, see the unit’s user manual: Liebert XDP, 16641;
Liebert XDC, SL-16671; Liebert XDO, SL-16666; Liebert XDV, SL-16626; Liebert XDCF, SL-16678;
and Liebert XDH20 and Liebert XDH32, SL-17210.

NOTE

To minimize the amount of refrigerant required, do NOT oversize the piping.

23

Figure 24 Hydraulic diagram

Liebert XDC

or

Liebert XDP

XD Cooling

Module *

XD Cooling

Module *

XD Cooling

Module *

XD Cooling

Module *

Pumped

Refrigerant

Liebert XDC

or

Liebert XDP

Supply Lines

Return Lines

Pumped

Refrigerant

* XD CoolFrame,

XDH, XDO or XDV

A

B

A

B

C

D

C

D

C

D

C

D

3.14 Liebert XD Piping Slope

The main supply and return lines to and from the XDP/XDC must be sloped downward toward the
XDP/XDC at a rate of 1-2" per 20 feet (25-51mm per 6m) of pipe run. Horizontal connector lines
should also be sloped downward from the cooling modules toward the main supply and return lines.

Designing a Liebert XD Solution

3.15 Bypass Flow Controllers

To ensure the XDP/XDC pumps operate within the optimum range, some installations require one or
more bypass flow controller(s). These devices are added to the field piping, and simulate the flow of
additional cooling modules.

Each bypass flow controller should be installed with one shutoff valve to allow the controller to be dis­abled when cooling modules are added to a Liebert XD system.

If bypass flow controllers are required, they should be connected between the main supply and the
main return lines of the field piping. The connection points to the main supply and return lines should
be in a convenient and accessible location between the Liebert XDP/Liebert XDC and the first Liebert
XD module in the circuit. See Figures 26 and 25 for piping details of the bypass flow controller.

Refer to Table 6 to determine the number of bypass flow controllers needed, based on the total nomi­nal cooling capacity of the cooling modules in each Liebert XD system.

Table 6 Bypass flow controllers for Liebert XDC- or Liebert XDP-based systems

Cooling Modules ­Cumulative Model Size

32 to 63 3 N/A

64 to 95 2 2

96 to 127 1 1

128 to 160 0 0

Required Number of Bypass Flow Controllers

Liebert XDP Liebert XDC

24

Figure 25 Bypass flow controller details, dimensions

7/8

"

(2.2mm) ID

4

"

(102mm)

Return

Main

7/8" Refrigerant Grade
Full Port Ball Valve
Field-Supplied and Field-Installed

Supply

Main

Bypass Flow Controller
(Field-Installed)

Flow Di rection

Filter Dryer
Assembly

Liebert XD

Cooling

Module #1

Liebert XD

Cooling

Module #2

Coolant
Supply

Coolant
Return

Bypass Flow
Controllers

Liebert XDP

or

Liebert XDC

Figure 26 Bypass flow controller arrangement

Designing a Liebert XD Solution

Figure 27 Bypass flow controller piping

25

3.16 Determining Refrigerant Volume

After the preliminary system design is completed, Tables 7, through 15 may be used to determine
the amount of refrigerant required. Perform the calculation below for each Liebert XD system being
configured.

NOTE
All lengths in Tables 7, 8, 9 and 10, are actual pipe lengths, not equivalent pipe lengths.

3.16.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume

NOTE

System refrigerant volume calculations in Tables 7, 8, 9 and 10, are based on a fully loaded
system. Additional charge may be required for lightly loaded systems.

Table 7 System R-134a charge for a Liebert XDP/Liebert XDC with any model Liebert

XDH/Liebert XDO/Liebert XDV/Liebert XDCF

Refrigerant Charge,

lb (kg)

157 lb. (65.7kg) Liebert XDP/Liebert XDC

3.55 lb. (0.66kg) Liebert XDO

2.32 lb. (1.05kg) Liebert XDV

5.32 lb. (2.41kg) Liebert XDH

1.41 lb. (0.64kg) Liebert XDCF

Per Liebert XD Unit
(Excludes Connector Lines
to and from Liebert XD Cooling Module)

Designing a Liebert XD Solution

Table 8 System refrigerant charge for the supply and return mains

Refrigerant Charge,

lb/foot (kg/m)

0.45 (0.67) Main supply actual length per 1-1/8" OD copper tubing

0.68 (1.01) Main supply actual length per 1-3/8" OD copper tubing

0.28 (0.42) Main return actual length per 2-1/8" OD copper tubing

0.43 (0.64) Main return actual length per 2-5/8" OD copper tubing

Supply/Return Main Length and Diameter

Table 9 R-134a refrigerant charge for hard-piped connector lines to and from any model

Liebert XDH/Liebert XDO/Liebert XDV/Liebert XDCF

Refrigerant Charge,

lb/foot (kg/m)

0.08 (0.12)

0.13 (0.19) 5/8" OD copper tubing Liebert XDV/Liebert XDCF supply connector actual length

0.26 (0.39) 7/8" OD Liebert XDO/Liebert XDH supply connector actual length "

0.02 (0.03) 5/8" OD copper tubing Liebert XDV/Liebert XDCF return connector actual length

0.04 (0.06) 7/8" OD copper tubing Liebert XDV/Liebert XDCF return connector actual length

0.04 (0.06) 7/8" OD copper tubing Liebert XDH/Liebert XDO return connector actual length

0.07 (0.1) 1-1/8" OD copper tubing Liebert XDH/Liebert XDO return connector actual length

Hard-Piped Connector Length and Diameter

1/2" OD Liebert XDO/Liebert XDH/Liebert XDV/Liebert XDCF supply connector
actual length

26

Designing a Liebert XD Solution

Table 10 R-134a refrigerant charge for Flex Pipe connector lines to and from any model

Liebert XDO/Liebert XDH/Liebert XDV/Liebert XDCF

Refrigerant Charge, lb. (kg) Metal Flex Pipe Connector Length

Supply Line Diameter 1/2"

0.3 lb. (0.14) 4 ft. Flex Pipe Liebert XDH/Liebert XDO/Liebert
XDV/Liebert XDCF supply

0.5 lb. (0.23) 6 ft. Flex Pipe Liebert XDH/Liebert XDO/Liebert
XDV/Liebert XDCF supply

0.7 lb. (0.32) 8 ft. Flex Pipe Liebert XDH/Liebert XDO/Liebert

0.8 lb. (0.36) 10 ft. Flex Pipe Liebert XDH/Liebert XDO/Liebert

Return Line Diameter 5/8"

0.01 lb. (0.01) 4 ft. Flex Pipe existing Liebert XDV systems

0.02 lb. (0.01) 6 ft. Flex Pipe existing Liebert XDV systems

0.03 lb. (0.01) 8 ft. Flex Pipe existing Liebert XDV systems

0.03 lb. (0.01) 10 ft. Flex Pipe existing Liebert XDV systems

Return Line Diameter 1"

0.13 lb. (0.05) 4 ft Flex Pipe Liebert XDH/Liebert XDO/Liebert

0.2 lb. (0.09) 6 ft Flex Pipe Liebert XDH/Liebert XDO/Liebert

0.27 lb. (0.12) 8 ft Flex Pipe Liebert XDH/Liebert XDO/Liebert

0.33 lb. (0.15) 10 ft Flex Pipe Liebert XDH/Liebert XDO/Liebert

XDV/Liebert XDCF supply

XDV/Liebert XDCF supply

XDV/Liebert XDCF supply

XDV/Liebert XDCF supply

XDV/Liebert XDCF supply

XDV/Liebert XDCF supply

27

3.16.2 Calculating Refrigerant Charge—Example

!

Using Tables 7, 8, 9 and 10, calculate the refrigerant charge of the individual sections of your Liebert
XD system. Add the calculated charge amounts to determine the amount of R-134a refrigerant
required for one system combining a Liebert XDP with Liebert XD cooling modules (Liebert XDCF,
Liebert XDH, Liebert XDO and Liebert XDV). The example below combines one Liebert XDP with 20
Liebert XDV8 cooling modules.

Table 11 Calculating refrigerant charge—example

Components

Liebert XDP/Liebert XDC 1 157 157

Liebert XDV8 Cooling Modules 20 2.32 46.4

Supply Main, 1-1/8" 100 0.45 45

Return Main, 2-1/8" 100 0.28 28

Liebert XDV 1/2" supply Flex
Pipes

Liebert XDV 5/8" return Flex
Pipes

Table 12 Worksheet to calculate refrigerant charge

Components

Number of Units

or Piping Length, feet Pounds Per Component Total, lb.

20 0.8 16

20 0.03 0.6

Number of Units

or Piping Length Pounds Per Component Total

Designing a Liebert XD Solution

Total 293

Verify that the refrigerant volume of the Liebert XD system with the longest piping length is within
the allowable limit. If the allowable limit is exceeded, the Liebert XDP/Liebert XDC should be moved
closer to the cooling modules (refer to 3.12 - Liebert XD Refrigerant for limits and related details).
Another way to shorten the total pipe length is to reroute the pipe runs.

3.17 Liebert XDC DX R-407c Circuit Volume—Air Cooled Units

CAUTION

Risk of improper lubrication. May cause equipment damage.

Liebert XDCs with refrigerant R-407c charges over 35 lb. (15.9kg) require additional oil. Refer
to the Liebert XDC user manual, SL-16671, available at Liebert’s Web site,

Weigh in the calculated charge based on Tables 13, 14 and 15.

Table 13 Indoor unit refrigerant charge—R-407c

Model 60/50 Hz Charge/Circuit, lb. (kg)

Liebert XDC160 17.5 (8.0)

28

Total

www.liebert.com

Designing a Liebert XD Solution

Table 14 Outdoor condenser charge—R-407c

Model Charge / Circuit, lb (kg)

CDL830 200 (90.8)

CSL616 254 (115.2)

CSL415 200 (90.8)

Table 15 Air cooled systems - liquid line charge - R-407c refrigerant per 100 ft (30 m) of Type "L"

copper tube

O.D.,

inches

3/8 3.7 (1.7) -

1/2 6.9 (3.1) -

5/8 11.0 (5.0 2.2 (1.0)

3/4 15.7 (7.1) 3.1 (1.4)

7/8 23.0 (10.4) 17.5 (8.0)

1-1/8 39.3 (17.8) 7.8 (3.5)

1-3/8 59.8 (27.1 11.8 (5.4)

1-5/8 - 16.7 (7.6)

Liquid Line,

lb (kg)

Hot Gas Line,

lb (kg)

Table 16 Indoor water/glycol cooled module – R-407c refrigerant charge

Model 60 Hz Charge / Circuit, lb(kg)

Liebert XDC 160 30.0 (13.2) per circuit

3.18 Chilled Water Piping

The Liebert XDP is offered only with a two-way chilled water control valve. Some applications may
require the use of a pressure activated bypass valve, to prevent dead-heading of the chilled water
pump. This bypass valve must be specified by the engineer responsible for design of the chilled water
field piping system.

Chilled water connections to the Liebert XDP are near the bottom of the unit. Refer to the Liebert
XDP user manual (SL-16641) for further information. Piping is routed downward from the unit to
chilled water piping under the raised floor. Connections are made using standard practices for copper
chilled water piping. Victaulic

®

connections may be used to simplify installation in existing facilities.

Refer to Table 31 for additional information.

3.19 Electrical

Make all wiring and electrical connections in accordance with local and national codes. Refer to the
applicable table in 5.0 - Specifications regarding wire size and circuit protection requirements.
Refer to electrical schematic when making connections.

3.20 Display Panel and Remote Temperature/Humidity Sensor Locations

The display panel must always be installed in the conditioned space. The display panel may be
mounted on the Liebert XDC/XDP’s front door if the unit is located in the area that it conditions.

The remote temperature / humidity sensor for the Liebert XDP and the Liebert XDC should be located
in the higher-temperature portion of the cold aisle where the XD modules are located. Alternatively, it
can be placed on the return air side of the primary air mover (e.g., Liebert Deluxe System/3
room if it represents the conditions where all the XD cooling modules are located. It should not be
installed where ambient air might cause false readings, for example, near unsealed doors, windows
and similar areas.

™

) in the

29

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

4.0 LIEBERT XD COOLING MODULES—LIEBERT XDO, LIEBERT XDV, LIEBERT XDH

AND LIEBERT XDCF

4.1 Liebert XDO Standard Features

• Micro Channel Heat Exchanger—The Liebert XDO unit includes two all-aluminum micro channel
heat exchangers.

• Fan—Air is drawn in the sides of the unit through the heat exchangers and is discharged by the
fan to the area below—Liebert XDO fan tray hinges down to allow access to replace or service all
electrical components.

• Internal Mounting—The Liebert XDO unit is typically suspended from the overhead building
structure by inserting field-supplied threaded rods into the internal mounting brackets.

4.1.1 Optional Features Liebert XDO

• Refrigerant Pre-Charge—Liebert XDO units with the pre-charged refrigerant option will have
one-shot style fittings or removable couplings that contain pressurized refrigerant inside the Lie­bert XDO. The fittings ease connection to Liebert XD Piping and filling with refrigerant.

• Field-Installed Flexible Piping (for use with prefabricated piping assemblies)—Field-installed
flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Con­nection style to the unit end may be straight or 90 degrees. Connection to the prefabricated piping
assembly is with a threaded coupler. For information on acquiring the correct kit for your instal­lation, refer to DPN000780, available by calling 1-800-LIEBERT and from your local Emerson
Network Power representative.

• External Mounting Brackets—The Liebert XDO unit can be suspended by external mounting
brackets that are attached to the front and rear panels of the unit. The external mounting brack­ets are optional ship-loose items.

• Condensate Detection—The Liebert XDO unit is available with optional factory-installed con­densate detection. The condensate detection has connection points (dry contacts) inside the unit.

• Lighting Fixture—Field-installable lighting fixtures are available in two voltages, 120V and
277V. Light Fixture maybe attached to the bottom of the light panel to the left and right of the
fan. Each fixture consists of housing, reflector, ballast and diffuser. Fixtures are compatible with
standard 48" fluorescent tubes. Lamps are not included.

30

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

24-1/8"

(613mm)

72-1/4"

(1835mm)

BACK

LEFT SIDE
OF XDO

FRONT OF XDO

Do Not Lift Here

Do Not Lift Here

FRONT OF XDO

RIGHT SIDE
OF XDO

24-1/4"

(616mm)

3"

(76mm)

22-1/2"

(572mm)

Rear of XDO

Left Side

of XDO

72-1/4"

(1835mm)

24-1/8"

(613mm)

Front of XDO

Right Side of XDO

Figure 28 Dimensional data—Liebert XDO hard-piped units

Figure 29 Dimensional data—Liebert XDO with pre-charged option

31

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

DPN000771
Pg. 5 Rev. 3

7/8" (22mm)
diameter mounting
holes

7/8" (22mm)
diameter mounting
holes

1"

(25mm)

26-3/4"

(679mm)

26-3/4"

(679mm)

18-1/2"

(470mm)

FRONT OF XDO

TOP VIEW

REAR OF XDO

1"

(25mm)

Figure 30 Liebert XDO internal mounting location

32

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Mounting
Hole

Mounting
Hole

TOP OF XDO

FRONT OF XDO

Knockouts
for High-Voltage
Wiring

Knockouts
for Low-Voltage
Wiring

The low-voltage connection is present only if
the Liebert XDO is equipped with the optional
condensation detection system.

Figure 31 Liebert XDO top and front electrical access points

4.2 Liebert XDV Standard Features

• Micro Channel Heat Exchanger—The Liebert XDV unit includes one all-aluminum micro channel
heat exchanger.

• Dual IEC Power Cords and Power Inlets—The Liebert 115V, 60Hz Liebert XDV unit is supplied
with two detachable, 10 ft (3m) power cords that attach to two IEC power inlets in the rear of the
unit. Each power cord has a NEMA 5-15P (IEC 320-C14) plug at the opposite end.

The Liebert 230V, 60/50 Hz Liebert XDV unit is supplied with two non-detachable 10 ft (3m)
power cords.

This feature allows the unit to be powered by two separate power sources.

• Dual Air Inlets—The Liebert XDV unit can be configured to allow air to enter from the rear grille
or the bottom of the unit.

• Dual Fans—Airflow is provided by two fans on the front of the unit. Dual switches—Controls on
the front of the unit permit the use of one fan or both fans.

• Foundation Mounting—There are two 1/4-20 cage nuts located on the underside of unit which
allow direct attachment to any Liebert Foundation cabinet, bolts provided with Liebert XDV unit.

• Mounting Clips for non-Liebert cabinets—The Liebert XDV unit is supplied with mounting clips
that allow attachment to a non-Liebert cabinet (Some drilling maybe required).

33

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Rear

2-3/8"

(60.3mm)

2-5/8"

(66mm)

3/4"

(19mm)

3/4"

(19mm)

39-1/2"

(1003mm)

Depth, Top

Width

29-5/8"

(752mm)

18-5/8"

(473mm)

22-7/8"

(581mm)

14"

(355mm)

Unit Height

Piping
Height

Depth, Bottom

DPN000770, Page 2
Rev. 2

Schrader Valve

Supply (In)

Return (Out)

4.2.1 Optional Features—Liebert XDV

• Refrigerant Pre-Charge—Liebert XDV units with the pre-charged refrigerant option will have
one-shot style fittings or removable couplings that contain pressurized refrigerant inside the Lie­bert XDV. The fittings ease connection to Liebert XD Piping and filling with refrigerant.

• External Mounting Brackets—The Liebert XDV can be suspended from the overhead building
structure. The external mounting brackets are ship-loose items.

• Field-Installed Flexible Piping (for use with prefabricated piping assemblies)—Field-installed
flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Con­nection style to the unit end may be straight or 90 degrees. Connection to the prefabricated piping
assembly is with a threaded coupler. For information on acquiring the correct kit for your instal­lation, refer to DPN000781_Rev1, available from Liebert by calling 1-800-LIEBERT and from
your local Emerson Network Power representative.

• Condensate Detection—The Liebert XDV unit is available with factory-installed condensate
detection. The condensate detection has connection points (dry contacts) at the external rear of
the unit.

Figure 32 Liebert XDV dimensions

34

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Detail
Area “A”

Detail “A”

Return
Connection
5/8"

Supply
Connection
1/2"

TOP VIEW OF
LIEBERT XDV

Figure 33 Liebert XDV dimensions with one-shot connection

35

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

PRIMARY

POWER

SOURCE

SECONDARY

82 83

60Hz M ODELS ONLY .

FIELD WIRING

CONNECTIONS

AT TERMINAL STRIP

TO BE N.E.C. CLASS 2

USE SWI TCH

CONTACTS WITH 75 V.A.

MINIMUM

50Hz M ODELS ONLY .

FIELD WIRING

CONNECTIONS
AT TERMINAL STRIP
FOR SAFETY EXTRA

LOW VOLTAGE CIRCUITS

ONL Y. USE SWI TCH
CONTACTS RATED

75 V.A. MINIMUM,

24 VOLTS A C

MAXIMUM.

1774241 P1 REV 1

1774241P1

Condensate Detection
Dry Contacts – Low Voltage
Connections

Knockout
for Optional
Wiring

Primary and
Secondary
Power Cords

Figure 34 Liebert XDV electrical connections for CE approved units

36

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Rear of XDV

Condensate Detection
Dry Contacts – Low
Voltage Connections

IEC Primary and
Secondary
Power Inlet

PRIMARY

POWER

SOURCE

SECONDARY

82 83

60Hz MODELS ONLY.

FIELD WI RING

CONNECTIONS

AT TERMINAL STRIP

TO BE N.E.C. CLASS 2

USE SWI TCH

CONTACTS WITH 75 V.A.

MINIMUM

50Hz MODELS ONLY.

FIELD WI RING

CONNECTIONS
AT TERMINAL STRIP
FOR SAFETY EXTRA

LOW VOLTA GE CIRCUITS

ONLY. USE SWITCH
CONTACTS RATED

75 V.A. MINIMUM,

24 VOLTS AC

MAXIMUM.

1774241 P1 REV 1

1774241P1

Knockout
for Optional
Wiring

Rear of XDV

Right Side of XDV

Figure 35 Liebert XDV electrical connections for CSA-approved units

37

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Unistrut
(field-supplied)

Bolt 3/8" -16; nut and
washer provided in kit

Bolt a bracket to each
corner of the XDV

3/8"-16 all-thread bolts,
field-supplied, typical

To prevent bypass air
from recirculating
through the XDV without
it passing through the
cabinet, this space
between the hanging
XDV and the cabinet
must be blocked.

Hanging XDV unit

Figure 36 Suspending single Liebert XDV from Unistruts

Figure 37 Suspending single Liebert XDV from the roof structure

38

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Attach hanger brackets
to each corner of each XDV.
This arrangement permits
mounting from either Unistruts
or from overhead structure.

10 - 32 x 5/8" length;
factory-supplied

10 - 32 x 5/8" length typical, 3;
factory-supplied

1/4 - 20 x 5/8" length typical, 2;
factory-supplied

Unistrut field-supplied
upper XDV: 1
lower XDV: 2

Bolt 3/8"- 16,
nut and washer
factory-supplied

Figure 38 Alternative mounting methods—mounting multiple Liebert XDV units

39

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Liebert XDC

or

Liebert XDP

XD Cooling

Module *

XD Cooling

Module *

XD Cooling

Module *

XD Cooling

Module *

Pumped

Refrigerant

Liebert XDC

or

Liebert XDP

Supply Lines
(2 per unit)

Return Lines
(2 per unit)

Pumped

Refrigerant

* XD CoolFrame,

XDH, XDO or XDV

4.3 Liebert XDCF Standard Features

The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and
equipment without exhausting heat into the room.

Upper and lower modules may be mounted on the rear of an Egenera BladeFrame. Liebert XDCF
modules use R-134a refrigerant. When attached to a fully loaded BladeFrame EX rack, each Liebert
XDCF module has a nominal cooling capacity of 10kW (2.8 tons; 34,000 BTUh). Performance is based
on:

• Entering fluid temperature—55°F (12.8°C) and

• Dew point—50°F (10°C) or lower.

Liebert XDCF modules consist of a sheet-metal frame, coil and filter dryer. It has no moving parts
and needs no electricity.

The Liebert XDCF system (see Figure 39 below) consists of:

• Liebert XDCF modules—upper and lower models are available

• Flex pipe—connects Liebert XDCF units to supply and return piping

• Liebert XD Piping—delivers pumped R-134a refrigerant through flexible piping

• Liebert XDP or Liebert XDC—supplies R-134a refrigerant to Liebert XDCF modules
(see Liebert XDP or Liebert XDC user manual for required chiller or drycooler)

Figure 39 Liebert XDCF hydraulic diagram

40

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

R-134a

RETURN

ONCE FLEX PIPE CONNECTIONS
ARE MADE TO THE UNIT DO NOT
DISASSEMBLE FROM THE UNIT.
REMOVE CONNECTIONS FROM
CEILING HEADERS BY TURNING
THE SUPPLY VALVE TO THE
OFF POSITION AND THEN TURNING
THE RETURN VALVE TO THE OFF
POSITION THE HEADER
CONNECTIONS MAY BE REMOVED.

SUPPLY

1194311 P1

7-5/16"

(186mm)

1-7/16"

(37mm)

3-9/16"

(90mm)

TIGHTEN FLEX PIPE
TO UNIT WITH THE
SCHRADER VALVE
IN TH IS P O S ITIO N

TIGHTEN FLEX PIPE
TO UNIT WITH THE
SCHRADER VALVE
IN TH IS P O S ITIO N

13-7/16"

(341mm)

31-3/8"

(797mm)

EMERSON

NETWORK POWER

Liebert

XD

TM

3-9/16"

(90mm)

1-7/16"
(37mm)

TM

BACK

TOP

RIGHT

SIDE

Upper unit shown;

both upper and

lower units have

same dimensions

Return
Pipe

Piping is not load-bearing
and should never be used
to lift or move the Liebert
XDCF

4.4 Liebert XDCF Mechanical Considerations

The Liebert XDCF is engineered to fit on the rear of the Egenera BladeFrame enclosure. Figure 40
illustrates the unit’s dimensions and the location of pipes. Figure 41 shows the attachment positions
of each module.

Figure 40 Overall dimensions

41

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

!

Detail Area: A

(Lower Module

Mounting Area)

BladeFrame
Power Modules

Detail Area: B

(Upper Module Mounting Area)

Enlarged Detail Area "A"

(Lower Module Mounting Area)

Captive nuts
for right side
mounting
fasteners

Captive nuts
for right side
mounting
fasteners

Enlarged Detail Area "B"

(Upper Module Mounting Area)

Locator stud for upper
unit mounting angle

Locator stud for lower
unit mounting angle

Egenera BladeFrame

4.5 Liebert XDCF Installation Considerations

No cutting or drilling is required to attach the modules to the rear of the Egenera BladeFrame cabi­net. All mounting holes, slots and pins required are fabricated at the factory.

Liebert XDCF modules attach beside the power modules on the rear of the Egenera BladeFrame (see
Figure 41).

Figure 41 Liebert XDCF unit mounting locations

4.6 Liebert XDCF Piping Connection Methods and Points

The assembly and connection means used for piping in the Liebert XD system are the same as those
used in conventional refrigeration systems. Observe all standard practices during installation and
startup to prevent damage and contamination.

Supply piping connection is 1/2" OD copper pipe, and return piping connection is 5/8" OD copper. Both
supply and return fittings are one-shot connections. These fittings contain pressurized R-134a refrig­erant inside the Liebert XDCF.

The Liebert XDCF has supply and return piping access on the top of each module.

WARNING

Risk of explosive discharge. Can cause death, injury and equipment damage.
Do not disconnect one-shot connections after they have been connected. Disconnection will

release pressurized R-134a refrigerant from the Liebert XDCF.

42

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

1-7/16"

(37mm)

3-9/16"

(90mm)

7-5/16"

(186mm)

Supply Pipe

(1/2" diameter)

Return Pipe

(5/8" diameter)

Pipe locations and
dimensions are the same
for upper and lower units

4.6.1 Header System

The Liebert XDCF module system requires use of the Liebert XD prefabricated piping assembly. The
prefabricated piping is compatible with the flex pipe required to attach to the Liebert XDCF modules.

Figure 42 Liebert XDCF supply and return piping access points

4.7 Liebert XDH Standard Features

• Dual Refrigeration Circuits—Each Liebert XDH has two refrigeration circuits, one in the
upper half of the unit and one in the lower half. Dual refrigeration circuits permit altering cooling
levels in response to server room conditions. The dual refrigeration circuits permits interlaced
connection of two refrigerant sources to enhance system reliability.

• Dual Power Cords and Power Inlets—The Liebert XDH is supplied with two (2) detachable
power cords 10 ft (3m) long that attach to two IEC power inlets on the rear of the unit. Each
power cord has a NEMA 5-15P (IEC 320-C14) plug at the opposite end. The dual power cords
allow the unit to be powered by two separate power sources. If the secondary power cord is con­nected to a UPS, the Liebert XDH unit fans will continue to operate if utility power fails.

• Top Piping Access—The Liebert XDH has supply and return piping access on the top of each
module. Supply piping connection is 1/2" OD copper pipe, and return piping connection is 7/8" OD
copper.

• Corner Stabilizers—A stabilizer in each corner permits rolling the Liebert XDH with greater
ease and less chance of tipping.

• Air Diffusers—Two diffusers, one on the upper half of the unit and one on the lower half,
enhance flow of cooling air. Uni-directional and bi-directional diffusers are available.

4.7.1 Optional Features—Liebert XDH

• Condensate Detection—A Liqui-tect moisture detection device and a contact-closure output are
available as factory-installed options. These detect condensation in the Liebert XDH’s catch pan
and connect to a monitoring or alarm system. A front panel alarm and indicator alert the user to
condensation inside the unit.

• Refrigerant Pre-Charge—Liebert XDH units with the pre-charged refrigerant option will have
one-shot style fittings or removable couplings that contain pressurized refrigerant inside the Lie­bert XDH. The fittings ease connection to Liebert XD Piping and filling with refrigerant.

• Field-Installed Flexible Piping (for use with prefabricated piping assemblies)—Field-installed
flexible piping kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8, 2.4 and 3 meters). Con­nection style to the unit end may be straight or 90 degrees. Connection to the prefabricated piping
assembly is with a threaded coupler. For information on acquiring the correct kit for your instal­lation, refer to DPN000780, available by calling 1-800-LIEBERT and from your local Emerson
Network Power representative.

43

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

78"

(1981mm)

42

(1067mm)

FRONT

FRONT

12" (305mm)

80"

(2032mm)

Top of Liebert XDH

Detail “A”

Rear
of Liebert
XDH

7/8" Return, Lower
Refrigeration Circuit

7/8" Return, Upper
Refrigeration Circuit

Detail "A"

6-1/16"

(154mm)

5"

(127mm)

Rear of XDH

DPN001180
Page 2, Rev. 0

4-1/8"

(105mm)

2-1/16"

(52mm)

3-11/16"

(94mm)

1-3/8"

(35mm)

1/2" Supply, Lower
Refrigeration Circuit

1/2" Supply, Upper
Refrigeration Circuit

Figure 43 Liebert XDH dimensions

Figure 44 Supply and return piping connections

44

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Return Main
(seen from end )
2-1/8" O.D.
Or 2-5/8" O .D.

Supply Main
(seen from end )
1-1/8" O.D.
or 1-3/8" O.D.

Recommended Arc

Acceptable A rc

1/2” Refrigerant -Grade
Full-Port Ball Valve
Fiel d-Supplied and

Fiel d Installed

Either 5/8” or 7/8"
Refrigerant -Grade
Full-Port Ball Valve
Field-Supplied and
Field Installed

Copper Tubing
Total length of each li ne
from XD cooling module
(XDH, XDO, XDV) to Main;
not to exceed 72" (1829 mm)

Return from Cooling
Module

Supply
to Cooling Module

Rear of
XD Cooling
Module

Top of XD Cooling Module

Refer to Table 5 for details.

4.7.2 Piping Connections to Liebert XDP or Liebert XDC

Piping Installation for Hard Piped System

The assembly and connection means for piping in the Liebert XD system are similar to those used for
conventional refrigeration systems. All piping should be installed with high-temperature brazed
joints. Soft solder is not recommended. During brazing, the lines must be filled with flowing dry nitro­gen to prevent excessive oxidation and scale formation inside the piping. Prevailing good refrigeration
practices must be employed for piping supports, leak testing, dehydration and charging. Failure to
use good system practices may result in damage to the system. Refer to the ASHRAE refrigeration
handbook for general good-practice refrigeration piping.

Follow all guidelines in 3.13 - Liebert XD Piping System Design and 3.14 - Liebert XD Piping
Slope during installation.

Figure 45 Hard-pipe connection diagram for Liebert XDV, Liebert XDO and Liebert XDH cooling modules

45

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

4.8 Liebert XD Flex Pipe Kit

Flex Pipe kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8,2.4 and 3 meters). Connection
style to the unit end may be straight or 90 degrees. Connection to the prefab piping assembly is a
threaded coupler. For data on acquiring the correct kit for your installation, see Table 17.

Table 17 Liebert XD Flex Pipe assemblies, supply and return

Liebert XD

Liebert XDV

CoolFrame

Liebert

XDO Liebert XDH

One-shot

Description

Couplings

4ft long (1.2m), 0º 186568G4 187867G4 186568G4

Removable

Couplings

One-shot

Couplings

One-shot

Couplings

2

186566G4 2 x 186566G4 2 x 187865G4

One-shot

Couplings

Removable

Couplings

4ft long (1.2m), 90º 186567G4 187866G4 - 186565G4 2 x 186565G4 2 x 187864G4

2

6ft long (1.8m), 0º 186568G1 187867G1 186568G1

186566G1 2 x 186566G1 2 x 187865G1

6ft long (1.8m), 90º 186567G1 187866G1 - 186565G1 2 x 186565G1 2 x 187864G1

3

8ft long (2.5m), 0º 186568G3 187867G3 186568G3

186566G3 2 x 186566G3 2 x 187865G3

8ft long (2.5m), 90º 186567G3 187866G3 - 186565G3 2 x 186565G3 2 x 187864G3

3

10ft long (10m), 0º 186568G2 187867G2 186568G2

186566G2 2 x 186566G2 2 x 187865G2

10ft long (10m), 90º 186567G2 187866G2 - 186565G2 2 x 186565G2 2 x 187864G2

Min Bend Radius, Supply

Min Bend Radius, Return

1. The minimum bend radius is for the flexible portion of the Liebert XD Flex Pipe. Because a section of hard
pipe is at each end of the Liebert XD Flex Pipe, the minimum bend radius can be larger.

2. Top Module

3. Bottom Module

1

1

7" (178mm) 7" (178mm)

8" (203mm) 9" (229mm)

46

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

DPN000773
Page 1, Rev. 3

Return

Supply

Nominal

H

L

96"

(2438mm)

ODS

ODR

Ref. Typ.

Ref.

Typ.

48"

(1219mm)

Ref. Typ.

8-5/16"

(211mm)

24"

(610mm)

4.9 Liebert XD Piping Dimensions and Features

4.9.1 Piping Installation Method prefabricated headers

The assembly and connection means used for piping in the Liebert XD system are similar to those
used for conventional refrigeration systems. All piping should be installed with high-temperature
brazed joints. Soft solder is not recommended. During brazing, the lines must be filled with flowing
dry nitrogen to prevent excessive oxidation and scale formation inside the piping. Prevailing good
refrigeration practices must be employed for piping supports, leak testing, dehydration and charging.
Failure to use good system practices may result in damage to the system. Refer to the ASHRAE
refrigeration handbook for general good-practice refrigeration piping.

Follow all guidelines in 3.13 - Liebert XD Piping System Design and 3.14 - Liebert XD Piping
Slope during installation.

Figure 46 Two-port prefabricated piping for Liebert XD cooling modules

Table 18 Two-port prefabricated piping legend

Branch Piping Standard Run Long Run *

Two Port 185797G21 185800G21

Outside Diameter (ODS) 1-1/8 1-3/8

Supply
inch (mm)

Return
inch (mm)

* Pipe runs greater than 60 equivalent feet

Height (H) 8-3/4 (222) 8-3/4 (222)
Length (L) 6-3/4 (171) 6-7/8 (175)
Outside Diameter (ODR) 2-1/8 2-5/8
Height (H) 10-1/2 (267) 10-1/2 (267)
Length (L) 8-3/4 (222) 9-1/8 (232)

47

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

DPN000773
Page 2, Rev. 3

Return

Supply

Nominal

H

L

96"

(2438mm)

ODS

ODR

48"

(1219mm)

Ref. Typ.

Ref.

Ref.

Ref.

Ref.

28-9/16"

(725mm)

28-9/16"

(725mm)

19-7/16"

(494mm)

19-7/16"

(494mm)

Figure 47 Four-port prefabricated piping for Liebert XD cooling modules

Table 19 Four-port prefabricated piping legend

Supply
inch (mm)

Return
inch (mm)

* Pipe runs greater than 60 equivalent feet

Branch Piping Standard Run Long Run *

Four Port 186551G21 186552G21

Outside Diameter (ODS) 1-1/8 1-3/8
Height (H) 8-3/4 (222) 8-3/4 (222)
Length (L) 6-3/4 (171) 6-7/8 (175)
Outside Diameter (ODR) 2-1/8 2-5/8
Height (H) 10-1/2 (267) 10-1/2 (267)
Length (L) 8-3/4 (222) 9-1/8 (232)

48

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

DPN000773
Page 3, Rev. 3

Return

Supply

120"

(3048mm)

24"
(610mm)
Ref. Typ.

8-5/16"

(211mm) Ref. Typ.

4-5/8"

(117mm)

Nominal

ODR

ODS

H

L

Figure 48 Five-port prefabricated piping for Liebert XD cooling modules

Table 20 Five-port prefabricated piping legend

Branch Piping Standard Run Long Run *

Supply
inch (mm)

Return
inch (mm)

* Pipe runs greater than 60 equivalent feet

Five Port 185797G51 185800G51

Outside Diameter (ODS) 1-1/8 1-3/8
Height (H) 8-3/4 (222) 8-1/2 (216)
Length (L) 6-3/4 (171) 7 (178)
Outside Diameter (ODR) 2-1/8 2-5/8
Height (H) 10-1/2 (267) 10-1/2 (267)
Length (L) 8-3/4 (222) 9-1/8 (232)

49

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

DPN000773
Page 4, Rev. 3

Return

Supply

H

L

ODS

ODR

Ref.

120"

(3048mm)

Ref. Typ.

Ref. Typ.

Ref. Typ.

Ref. Typ.

7-7/16"

(189mm)

7-7/16"

(189mm)

9-1/16"

(230mm)

16-9/16"

(421mm)

24"

(610mm)

Figure 49 Ten-port prefabricated piping for Liebert XD cooling modules

Table 21 Ten-port prefabricated piping legend

Supply
inch (mm)

Return
inch (mm)

* Pipe runs greater than 60 equivalent feet

Branch Piping Standard Run Long Run *

Ten Port 186650G51 186553G51

Outside Diameter (ODS) 1-1/8 1-3/8
Height (H) 8-3/4 (222) 8-3/4 (222)
Length (L) 6-3/4 (171) 6-7/8 (175)
Outside Diameter (ODR) 2-1/8 2-5/8
Height (H) 10-1/2 (267) 10-1/2 (267)
Length (L) 8-3/4 (222) 9-1/8 (232)

50

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Unit Dimensional Data

Floor Cutout Dimensions

E

D

A

Overall

C

Side Panel

B

Overall

DPN000767
Pg. 2, Rev. 6

D

Unit Base

E

Unit Base

78"

(1981mm)

11"

(279mm)

5

"

(

1

2

7

m

m

)

1" (25mm)

5-1/2"

(140mm)

The shaded area indicates
a recommended clearance
of 36" (914mm) for component
access.

4.10 Liebert XDP Standard Features

• Heat Exchanger—Brazed plate design with interwoven circuiting constructed of stainless steel
plates, copper brazed.

• Pumps—Centrifugal type, end suction, internally cooled, canned rotor design.

• Standard Control Processor—The standard control system is microprocessor-based with an exter­nal LCD numerical display to allow observation of specified adjustable functions. Operating con­ditions and status are indicated on the LCD panel, which is mounted either on the unit or on the
wall, depending on application details (see user manual, SL-16641). The control system also mon­itors unit operation and activates an alarm when any of the specified factory preset conditions are
exceeded.

• Cabinet and Frame—Custom powder painted steel panels. A hinged control access panel opens to
a second front panel, which is a protected enclosure for all high voltage components. Frame is con­structed of 14 gauge heliarc welded tubular steel and painted using an auto-deposition coating
system.

Figure 50 Liebert XDP dimensions

Table 22 Liebert XDP dimensions

Model

50/60Hz

Liebert

XDP160

* The dimension does not include the bezel of the disconnect switch.

Dimensional Data inches (mm) Shipping Weight, lb (kg)

A B C D E Domestic Export

38 (965) 34 (864) 33-1/8 (841) 33 (838) 36 (914) 990 (449) 1067 (484)

51

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Dimensions are
approximate
and subject to change
without notice.

16-1/8"

(410mm)

17-1/4"

(438mm)

10" (254mm)

19"

(483mm)

A - Return From Cooling Modules

B - Supply to Cooling Modules

D - Chilled Water Return
To Chilled Water Source

C - Chilled Water Supply
From Chilled Water Source

* Allow 8" (204mm) clearance for filter replacement.
** To ensure ensure all refrigerant flow is filtered, install the filter dryer assembly
between the discharge line of the XD P and the first bypass flow controller
or the first cooling module.

DPN000767
Pg. 3, Rev. 6

Install replaceable filter dryer assembly
in liquid supply line B.

To first cooling module
or bypass flow controller **

* Orientation
determined
by installer.

Figure 51 Liebert XDP piping access points and external features

Table 23 Unit piping outlet connection sizes, inches, OD Cu

Model Pipe Connection Point

50/60 HZABCD

Liebert

XDP160

2-1/8 1-1/8 2-5/8 2-5/8

52

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Disconnect
Switch

Status Lamps

User Interface

Front of Liebert XDP

Enclosure Cover
Latch

Hazardous Voltage
Enclosure Cover

Liebert XD Module Condensate
Connections (optional;
depends on features
supplied with Liebert XD Module)

User Interface
(Wall Box) Wiring

Temperature/Humidity
Sensor Wiring

Alternate Knockout
for Temperature/Humidity
Sensor Wiring

Enclosure Cover Not Shown for Clarity

Figure 52 Front view of Liebert XDP and electrical enclosure

Figure 53 Liebert XDP electrical enclosure knockout locations for field wiring

53

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Customer Power
Connection

Ground Lug

Disconnect Switch

Control
Fuse Blocks

Power Block

Pump Fuse
Blocks

Pump Contactors

Transformer 1

Transformer 2

Busbar

Customer Power
Connection

Pump Circuit
Breakers

Pump Contactors

Ground Lug

Disconnect Switch

Transformer 1

Power Block

Transformer 2

Fuse Blocks

Figure 54 Liebert XDP 60Hz high voltage connections

Figure 55 Liebert XDP 50Hz high voltage connections

54

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

C

D

B

Overall

5"

(127mm)

17"

(432mm)

1"

(25.4mm)

2"

(51mm)

78"

1981mm

A

Overall

Shaded areas indicate a
recommended clearance
of 34" (864mm) for
component access.

D

Unit

Base

E

Unit Base

Unit Dimensional Data

Floor Cutout Dimensions

DPN000768
Page 2, Rev. 6

Recommended
Minimum Hot Gas
Supply & Liquid Return
Piping Opening

4.11 Liebert XDC Standard Features

• Compressors—Scroll with a suction gas cooled motor, vibration isolators, thermal overloads, man­ual reset high-pressure switch and pump down low-pressure switch.

• Refrigeration System—Dual refrigeration circuits each including liquid line filter dryers, refriger­ant sight glass with moisture indicator, electronic control valve, adjustable externally equalized
expansion valves and liquid line solenoid valves.

• Heat Exchanger—Brazed plate design with interwoven circuiting constructed of stainless steel
plates, copper brazed. PUMPS Centrifugal type, end suction, canned rotor design.

• Standard Control Processor—The standard control system is microprocessor-based with an exter­nal LCD numerical display to allow observation of specified adjustable functions. Normal operat­ing conditions are indicated on the LCD panel, which is mounted either on the unit or on the wall,
depending on application details (see user manual, SL-16671). The control system also monitors
unit operation and activates an alarm when any of the specified factory preset conditions are
exceeded.

• Cabinet and Frame—Custom powder painted steel panels. A hinged control access panel opens to
a second front panel, which is a protected enclosure for all high voltage components. Frame is con­structed of 14 gauge heliarc welded tubular steel and painted using an auto-deposition coating
system.

4.11.1 Liebert XDC Optional Features

• Water / Glycol Condensers—A water/glycol floor stand condenser option is available for heat
rejection requirements. The water/glycol floor stand can be located beneath the XDC unit or
installed nearby.

Figure 56 Liebert XDC dimensional data

Table 24 Liebert XD Chiller dimensions, weight

Air Cooled

* Dimension does not include the bezel of the disconnect switch.

Model Dimensional Data, inches (mm) Shipping Weight, lb (kg)

50/60Hz A B C D E Domestic Export

Liebert

XDC160

74 (1880) 34 (864)

33-1/8

(841)

55

33 (838) 72 (1829) 1945 (882) 2093 (949)

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Install replaceable filter dryer
assembly in liquid supply line G

** To first cooling module
or bypass flow controller

Dimensions are
approximate and
subject to change
without notice.

G - Supply to Cooling Units

F - Return From Cooling Units

B - Liquid
Refrigerant Lines

* Allow 8" (204mm) of clearance for filter replacement

** To ensure all refrigerant flow is filtered, install the filter dryer assembly

between the discharge line of the XDC and the first bypass flow controller
or the first cooling module.

A - Hot Gas
Refrigerant Lines

* Orientation determined
by installer.

23"

(584.2mm)

6" (152mm)

47"

(1193.8mm)

44"

(1117.6mm)

DPN000768
Page 3, Rev. 6

Figure 57 Liebert XDC piping locations

Table 25 Liebert XD Chiller piping connection sizes

Air Cooled Models Piping Outlet Connection Sizes, OD Cu, inches

50/60Hz A B C D E F G

Liebert XDC160 1-3/8 7/8 - - - 2-1/8 1-1/8

56

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Customer
Water
Supply

Customer
Water
Return

Customer Provided Piping

C - Hot Gas
Refrigerant Lines

D - Liquid
Refrigerant Lines

6"

(153mm)

B - Supply to
Cooling Units

F - Cup Fitting

E - Threaded
Female
Connections

A - Return from
Cooling Units

23"

(584mm)

47"

(1194mm)

44"

(1118mm)

Capillary Lines are 48" (1220mm)
Limit Valve Distance from Condensers

DPN001419
Pg. 01, Rev. 01

Figure 58 Positioning a water/glycol Liebert XDC for placement on a floor stand

Table 26 Liebert XDC Water/Glycol Piping Connection Sizes

Model Piping Outlet Connection Sizes, OD Cu, inches

50/60Hz A B C D E* F**

XDC160 2-1/8 1-1/8 1-3/8 7/8 2-1/2 2-1/8 or 2-5/8

* Threaded Female Conection
** 2-1/8" for 1" WRV, 2-5/8" for 1-1/4" WRV

57

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Shaded areas indicate a recommended
clearance of 36" (915mm) for component
access and water/glycol piping.

TOP VIEW OF FLOOR STAND

LEFT SIDE OF CABINET

FLOOR STAND CONNECTIONS

33"

(838mm)

33" (838mm)

72"

(1828mm)

12-5/16"

(313mm)

26-15/16" (684mm)

2-1/4" - 5-1/4"
(57 - 133 mm)

Liquid 1

Liquid 2

24" Nominal

(609mm)

20-1/4"

(514mm)

Circuit 1

Circuit 2

Inlet

Outlet

Hot Gas 1

Hot Gas 2

6-1/2"

(165mm)

10-1/2"

(267mm)

DPN001419
Pg. 2 , Rev. 01

Figure 59 Piping locations—floor stand and valve assembly

58

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Enclosure Cover Latch

Enclosure Cover Latch

Hazardous Vo lt age

Enclosure Cover

Hazardous Volta ge

EnclosureCover

Primary
Disconnect
Switch

Status Lamps

User Interface

Secondary

Disconnec t

Switch

PRIMARY

ELECTRICAL ENCLOSURE

PUMP SECTION

SECONDARY

ELECTRICAL ENCLOSURE

COMPRESSOR SECTION

Knockout for
Input Power

Enclosure Cover
Not Shown for Clarity

Figure 60 Front view of Liebert XDC and electrical enclosures

Figure 61 Liebert XDC electrical enclosure knockout locations for field wiring

59

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Transformer Fuse Block

Compressor Fuse Blocks

Customer Power Connection

Ground
Lug

Primary
Disconnect
Switch

Primary Power Block

Electronic Hot Gas
Bypass Controllers

Relay

Compressor Contactors

Transformer 3

Compressor
Circuit Breakers

Compressor
Contactors

Transformer 3

Wire
Raceway

Relay

Ground
Lug

Customer
Power
Connection

Primary Power Block

Primary
Disconnect
Switch

Electronic Hot Gas
Bypass Controllers

Busbar

Figure 62 Liebert XDC high voltage connections—primary disconnect switch, 60Hz models

Figure 63 Liebert XDC high voltage connections—primary disconnect switch, 50Hz models

60

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Power Connection
From Primary
Power Block

Ground Lug

Secondary Disconnect Switch

Transformer
Fuse Block

Secondary
Power Block

Pump Circuit Breakers

Pump Contactors

Transformer 1

Transformer 2

Busbar

Power Connection
From Primary
Power Block

Pump Circuit
Breakers

Pump Contactors

Ground Lug

Secondary
Disconnect
Switch

Transformer 1

Power Block

Transformer 2

Fuse Blocks

Figure 64 Liebert XDC high voltage connections—secondary disconnect switch, 60Hz models

Figure 65 Liebert XDC high voltage connections—secondary disconnect switch, 50Hz models

61

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Electrical handy box,
factory-installed with cover

HEAT REJECTION ELECTRICAL
CONNECTION POINTS
Field-supplied 24V. Class 1 wiring
to interlock heat rejection from pigtails:
70A and 71A - Compressor 1 circuit
70B and 71B - Compressor 2 circuit
70C and 71C - Dual Source relay (optional)

Liebert XD Module Condensate
Connections (optional;
depends on features
supplied with Liebert XD Module)

User Interface
(Wall Box) Wiring

Temperature/Humidity
Sensor Wiring

Alternate Knockout
for Temperature/Humidity
Sensor Wiring

Enclosure Cover Not Shown for Clarity

Figure 66 Liebert XDC heat rejection electrical connection points

Figure 67 Liebert XDC electrical enclosure knockout locations for Extra Low Voltage connections

62

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF

Control wiring must be Class 2 and installed
in accordance with the National Electrical Code (NEC)

Requires shielded cable

Control Display Panel
Four thermostatic wires
to be connected toTB3

Temperature/Humidity Sensor
Cable Provided with
Temperature/Humidity Sensor Board

Factory-Wired
Temperature
Sensor(s)

TS-3

37
38

78

77

K3NCL

K3NO

K3COM

H2O (24)

XDOC (51)

RAD1 (50)

TS-4
TS-5
TS-6

Figure 68 Liebert XDC Extra Low Voltage field connections points

63

5.0 SPECIFICATIONS

Table 27 Liebert XDC160 specifications

XDC160 Water /

XDC160 Air

189192G3

Models

Cooling Capacity, tons (kW) 46 (160) 37 (130)

Minimum Load

Electrical Requirements

Input 460V-3ph-60Hz 380/415V-3ph-50Hz 460V-3ph-60Hz

Full Load Amps 79A

Minimum supply wire sizing ampacity 84A

Maximum fuse or circuit breaker size 100A

Dimensions, inches (mm)

Height - Main unit only 78 (1981)

Height - Main unit only, as shipped 83 (2108)

Width - Main unit 74 (1879)

Depth - Main unit 34-5/8 (879)

Height - Water / Glycol cooled condenser stand N/A 24 (607)

Width - Water / Glycol cooled condenser stand N/A 72 (1829)

Depth - Water / Glycol cooled condenser stand N/A 33 (839)

Weight, lb (kg)

Main unit only 1800 (817)

Main unit only, as shipped Domestic: 1945 (882); Export: 2093 (949)

Water / Glycol cooled condenser stand N/A 1075 (488)

Water / Glycol cooled condenser stand, as shipped N/A 1150 (521)

Pipe Connections, inches, O.D., Cu

Liebert XD Coolant supply to XD cooling modules 1-1/8

Liebert XD Coolant return from XD cooling modules 2-1/8

Liquid line, DX circuit 7/8

Hot gas line, DX circuit 1-3/8

Heat Rejection Equipment

95°F ambient air cooled condenser 1-CDL830 or 2-CSL415 N/A

Number of XD Cooling Units Connected, Maximum (Minimum)

Liebert XDCF10 16 (6)

Liebert XDH20 8 (4)

Liebert XDH32 5 (2)

Liebert XDO16 10 (4)

Liebert XDO20 8 (4)

Liebert XDV8 20 (8)

Liebert XDV10 16 (7)

Cabinet Exterior Finish Black, matte finish, heat-fused powder coat

Maximum Ambient Operating Temperature °F(°C) 86 (30)

Agency

Approvals CSA CE CSA

XDC160AA XDC160AM

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.

189192G5

See Tables 28, 29

and 30 for

Water/Glycol

performance data

Specifications

Glycol

64

Table 28 Floor stand specifications—water-cooled Liebert XDC

Models - 60 Hz XDC160 Water Floor Stand - 60Hz

Entering Fluid Temp °F (C) 65 (18) 70 (21) 75 (24) 85 (29) 95 (35)

Performance Data

Cooling capacity, tons (kW) 46.1(162.3) 46.1(162.3) 46.1(162.3) 46.1(162.3) 44.5(156.5)

Flow, GPM 50 58 70 110 142

Pressure Drop, psi (Ft Water) 2.7 (6.2) 4.9 (11.3) 5.4 (12.5) 20.7 (47.8) 27.3 (63.1)

Heat Rejection Equipment

Water regulating valve size 1" 1" 1" 1" 1"

Piping Connections

Water / glycol supply and return lines 2-1/8" 2-1/8" 2-1/8" 2-1/8" 2-1/8"

Table 29 Floor stand specifications—Liebert XDC with 40% propylene glycol

Models - 60 Hz XDC160 Glycol Floor Stand - 60Hz - 40% PG

Outside Ambient °F (°C) 95 (35) 100 (38) 105 (41)

Entering Fluid Temp °F (°C) 110 (43) 110 (43) 110 (43)

Performance Data

Cooling capacity, tons (kW) 42.5 (149.4)

Total Heat Rejection, (kW) 192.6

Flow, GPM 206

Pressure Drop, psi (ft water) 37.2 (85.9)

Specifications

Heat Rejection Equipment

Drycooler DNT 940A 2 x DNT 880A*

Drycooler Pressure Drop, psi (ft water) 6.7 (15.5) 2.9 (6.6)

Glycol pump package - 10hp 9A31258G3

Pump Control Package - 208V 9A34606G47

Pump Control Package - 460V 9A32114G4

Pump Total Head @ 204 GPM, ft water 145

Water regulating valve size 1-1/4"

Piping Connections

Water / glycol supply and return lines 2-5/8"

* When multiple drycoolers are used ensure flow is balanced.

65

Table 30 Floor stand specifications—Liebert XDC with 40% ethylene glycol

Models - 60 Hz XDC160 Glycol Floor Stand - 60Hz - 40% EG

Outside Ambient °F (°C) 95 (35) 100 (38) 105 (41)

Entering Fluid Temp °F (°C) 110 (43) 110 (43) 110 (43)

Performance Data

Cooling capacity, tons (kW) 42.5 (149.4)

Total Heat Rejection, (kW) 192.6

Flow, GPM 204

Pressure Drop, psi (ft water) 35.9 (82.9)

Heat Rejection Equipment

Drycooler DNT 940A 2 x DNT 880A*

Drycooler Pressure Drop, psi (ft water) 6.5 (15.1) 2.7 (6.3)

Glycol pump package - 10HP 9A31258G3

Pump Control Package - 208V 9A34606G47

Pump Control Package - 460V 9A32114G4

Pump Total Head @ 204 GPM, ft water 145

Water regulating valve size 1-1/4"

Piping Connections

Water / glycol supply and return lines 2-5/8"

* When multiple drycoolers are used ensure flow is balanced.

Specifications

66

Table 31 Liebert XDP160 specifications

Models XDP160RC XDP160RA XDP160RM

160 kW / 46 Tons, 60Hz 140 kW / 40 Tons, 50Hz

Cooling Capacity, Nominal

Minimum Load

Electrical Requirements

Input 208V/3ph/60Hz 460V/3/ph60Hz 380/415V/3ph/50Hz

Full Load Amps 4A 2.1A 2.3A

Dimensions, inches (mm)

Height – Unit only 78 (1981)

Height – As shipped 83 (2108)

Width 38 (965)

Depth 34 (864)

Weight, lb (kg)

Unit only 821 (372)

Shipping weight Domestic: 990 (449); Export: 1067 (484)

Installed, with refrigerant and chilled

water

Pipe Connections

Refrigerant supply to Liebert XD

cooling module

Refrigerant return from Liebert XD

cooling module

Chilled water supply and return 2-5/8" OD, Cu

Control valve 2-way, 2" nominal; 35 PSIG close off pressure rating;

Pressure Drop – Chilled Water Side

Temperature Rise – Chilled Water
Side at rated flow, °F (°C)

Number of Liebert XD cooling units connected, maximum (minimum

Liebert XDCF10 16 (4)

Liebert XDH20 8 (2)

Liebert XDH32 5 (1)

Liebert XDV8 20 (4)

Liebert XDV10 16 (4)

Liebert XDO16 10 (2)

Liebert XDO20 8 (2)

Cabinet Exterior Finish Black, matte finish, heat-fused powder coat

Operating Ambient
Temperature, Maximum, °F (°C)

Agency

Approvals CSA 60Hz CE 50Hz

Each capacity is based on 45ºF (7ºC) entering water temperature and 140gpm

(530lpm) water flow rate. Capacity is reduced when glycol mixtures are used in

place of 100% water.

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.

1038 (471)

1-1/8" OD, Cu

2-1/8" OD, Cu

150 PSIG maximum allowable pressure

20 psig (137kPa, 1.38bar), with 140 gpm (530lpm) water flow rate,

control valve fully open

8.0 (4.4) 6.9 (3.8)

86 (30)

Specifications

67

Specifications

Table 32 Liebert XDO16 specifications

XDO16BSP-0

XDO16BSPE0

XDO16DSP-0

XDO16DSPE0

XDO16BS--0

XDO16DS--0
XDO16BS-E0
XDO16DS-E0

(60Hz)

Models

XDO16BK--0

XDO16DK--0
XDO16BK-E0
XDO16DK-E0
XDO16BKP-0

XDO16BKPE0

XDO16DKP-0

XDO16DKPE0

(60Hz)

Cooling Capacity

Nominal (92°F [33°C] EAT): 17.2kW / 5 Tons

Maximum (90°F [32°C] EAT): 17.2 kW / 5 Tons

Conditions Capacity rating is @ 55°F (13°C) Entering Fluid Temperature and 50ºF or lower dew point

Electrical Requirements

Input Voltage 1ph-60Hz-120V 1ph-50 Hz-220-240V 1ph-50 Hz-230V

Input Power Connections Terminal blocks provided internal to unit

Full Load Amps 2.7A @ 120V 1.50 @ 230V 1.19 @ 230V

Wire Size Amps 3.4 2.0 1.28

Overcurrent Protection Device 15 15 15

Power consumption,

nominal, watts

335 250 250

Dimensions, inches (mm)

Length 72-1/4 (1835)

Width 24-1/8 (613)

Height 22-1/2 (572) not including electrical and piping access

Weight, lb (kg)

Unit only 150 (68)

Shipping weight 238 (108) 296 (134)

Installed, with refrigerant,

without options

155 (70)

Number of Fans 11

Airflow, Nominal, ft

3

/ hr)

(m

3

/ min

2700 (4587) 2250 (3822)

Audible Noise 85 dBa sound power 83 dBa sound power

Pipe Connections

from Liebert XDP/Liebert XDC

Refrigerant Supply

Refrigerant Return

to Liebert XDP/Liebert XDC

1/2" OD, Copper

7/8" OD, Copper

Serviceable Parts Fan and electrical components

Exterior Finish – Bottom,
Sides, Front and Rear

Black, matte finish, heat-fused powder coat

Exterior Finish - Top Hot-dipped galvanized steel

Agency

Approvals CSA 60 Hz CSA 60Hz CE 50Hz

XDO16BSP-0

XDO16BSPE0

XDO16DSP-0

XDO16DSPE0

XDO16BS--0

XDO16DS--0
XDO16BS-E0
XDO16DS-E0

(50Hz)

Nominal (92°F [33°C]
EAT): 17.1kW/4.9Tons
Maximum (93°F [34°C]

EAT): 17.2 kW / 5 Tons

Options

Lighting Fixtures (ship loose) 2 Liebert XDOs per lighting unit; 120V or 277V; 4’ standard fluorescent tubes (not included)

Power, optional lighting fixture 0.9A per 120V light fixture; 0.4A per 277V light fixture None

Condensate sensing

(factory-installed)

Dry contact 24VAC - 1A maximum

68

Specifications

Table 33 Liebert XDO20 specifications

XDO20DK--*; XDO20BKP-*

XDO20DKP-*; XDO20BK-E*

Models

XDO20DK-E*; XDO20BKPE*

XDO20DKPE*

60Hz 60Hz 50Hz

Cooling Capacity

Conditions

Nominal (92°F [33°C] EAT): 20kW / 5.7 Tons

Maximum (100°F [38°C] EAT): 23kW / 6.5 Tons

Capacity rating is @ 55ºF (13°C) Entering Fluid Temperature and

50ºF (10°C) or lower dew point

Electrical Requirements

Input Voltage 1ph-60Hz-120V 1ph-60Hz-220-240V 1ph-50 Hz-220-240V

Input Power Connections Terminal blocks provided internal to unit

Full Load Amps 2.7A @ 120V 1.64A @ 230V 1.47 @ 230V

Wire Size Amps 3.4 2.0 1.84

Overcurrent Protection Device 15 15 15

Power consumption,

nominal, watts

335 350 250

Dimensions, inches (mm)

Length 72-1/4 (1835)

Width 24-1/8 (613)

Height 22-1/2 (572) not including electrical and piping access

Weight, lb (kg)

Unit only 150 (68)

Shipping weight 238 (108) 296 (134)

Installed, with refrigerant,

without options

Number of Fans 11

Airflow, Nominal, ft

3

(m

/ hr)

3

/ min

2700 (4587) 2250 (3822)

Audible Noise 85 dBa sound power 83 dBa sound power

Pipe Connections (without flex pipe)

from Liebert XDP/Liebert XDC

Refrigerant Supply

Refrigerant Return

to Liebert XDP/Liebert XDC

1/2" OD, Copper

7/8" OD, Copper

Serviceable Parts Fan and electrical components

Exterior Finish – Bottom,
Sides, Front and Rear

Black matte finish, heat-fused powder coat

Exterior Finish - Top Hot-dipped galvanized steel

Agency

Approvals CSA 60 Hz CE 50Hz

Options

Lighting Fixtures (ship loose) 2 Liebert XDOs per lighting unit; 120V or 277V; 4’ standard fluorescent tubes (not included)

Power, optional lighting fixture

Condensate sensing

(factory-installed)

0.9A per 120V light fixture;

0.4A per 277V light fixture

Dry contact 24VAC - 1A maximum

Pre-Charged Refrigerant R-134a Refrigerant, one-shot connections

* = Revision level

XDO20BS--*; XDO20DS--*

XDO20BSP-*; XDO20DSP-v

XDO20BS-E*; XDO20DS-E*

XDO20BSPE*; XDO20DSPE*

Nominal (92°F [33°C] EAT):

17.7kW / 5 Tons

Maximum (103°F [39°C]

EAT): 23kW / 6.5 Tons

155 (70)

None

69

Table 34 Liebert XDO20 dimensions—domestic and export

Shipping Dimensions, inches (mm)

Model

All Models

* Includes piping connections

Length Width Height Length Width Height Length Width Height *

84

(2134)

30

(762)

30 (762)

83

(2108)

(762)

Table 35 Liebert XDO16 dimensions—domestic and export

Shipping Dimensions, inches (mm)

Model

All Models

* Includes piping connections

Length Width Height Length Width Height Length Width Height *

84

(2134)

30

(762)

30

(762)

83

(2108)

30

(762)

(762)

30

30

30 (762)

Unit Dimension

Unpacked, inches (mm)Domestic Export

72-1/4
(1835)

72-1/4

(1835)

24-1/8

(613)

Unit Dimension

Unpacked, inches (mm)Domestic Export

24-1/8

(613)

25-1/2

(648)

Specifications

25-1/2

(648)

70

Specifications

Table 36 Liebert XDV8 specifications

XDV8BK--*; XDV8DK--*
XDV8BKP-*; XDV8DKP-*
XDV8BK-E*; XDV8DK-E*

XDV8BKPE*;

XDV8DKPE*
XDV8BKR-*; XDV8BKRE*
XDV8DKR-*; XDV8DKRE*

Models

Cooling Capacity

Conditions

Maximum (95°F [35°C] EAT): 8.8kW / 2.5 Tons

60 Hz 60 Hz 50 Hz 50 Hz

Nominal (98°F [37°C] EAT): 8.8kW / 2.5 Tons

Capacity rating is @ 55ºF (13ºC) Entering Fluid Temperature and

50ºF (10ºC) or lower dew point, rear air inlet.

Electrical Requirements

Input 120V model: 1ph-60 Hz 230V model: 1ph-60 Hz 230V model: 1ph-50 Hz

Input power connections 2 power connections, each model

Full Load Amps 120V model: 2.0A 230V model: 1.0A

Power consumption,

nominal, watts

180 190 190 190

Dimensions, inches (mm)

Height – unit only 14 (355) not including pipe connections

Height – including pipe

connections

Width 22-7/8 (581)

Depth – Top 39-1/2 (1003)

Depth – Bottom 29-5/8 (752)

Weight, lb (kg)

Unit only 77 (35)

Shipping weight 125 (57)

Installed, with

refrigerant

Number of Fans 2222

Airflow, Nominal,

3

/ min (m3/ hr)

ft

1000 (1699) with rear inlet. Bottom inlet airflow may

be less, depending on restrictions inside cabinet

Audible noise 78 dBa sound power 73 dBa sound power

Pipe Connections (without Liebert Flex Pipe)

Refrigerant Supply

from Liebert

1/2" OD Cu, (optional 1/2" threaded coupler flex piping)

XDP/Liebert XDC

Refrigerant Return

to Liebert XDP/Liebert

5/8" OD Cu, (optional 3/4" threaded coupler flex piping)

XDC

Serviceable Parts Fans and electrical components

Cabinet Exterior
Finish

Black, matte finish, heat-fused powder coat

Options

Condensate sensing

(factory-installed)

Pre-Charged R-134a Refrigerant, one-shot connections

Agency

Approvals CSA 60Hz CSA 50Hz CE 50Hz

* = Revision level of unit

XDV8BT--*; XDV8DT--*
XDV8BTP-*; XDV8DTP-*
XDV8BT-E*; XDV8DT-E*

XDV8BTPE*; XDV8DTPE*

XDV8BTR-*; XDV8BTRE*
XDV8DTR-*; XDV8DTRE*

Nominal (98°F [37°C] EAT): 8kW/ 2.3 Tons

Maximum (103°F [39°C] EAT): 8.8kW/2.5Tons

18-5/8 (473)

79 (36)

833 (1415) with rear inlet. Bottom inlet airflow

may be less, depending on restrictions inside

Dry contact outgoing signal

XDV8BS--*; XDV8DS--*
XDV8BSP-*; XDV8DSP-*
XDV8BS-E*; XDV8DS-E*

XDV8BSPE*; XDV8DSPE*

XDV8BSR-*; XDV8BSRE*
XDV8DSR-*; XDV8DSRE*

cabinet

71

Specifications

Table 37 Liebert XDV10 specifications

XDV10BT--*; XDV10DT--*
XDV10BTP-*; XDV10DTP-*
XDV10BT-E*; XDV10DT-E*

XDV10BTPE*; XDV10DTPE*

XDV10BTR-*; XDV10BTRE*
XDV10DTR-*; XDV10DTRE*

Nominal (98ºF [37ºC] EAT): 8kW / 2.3 Tons

Maximum (116ºF [47ºC] EAT): 11.8kW/3.4 Tons

Models

Cooling Capacity

Conditions

XDV10BK--*; XDV10DK--*
XDV10BKP-*; XDV10DKP-*
XDV10BK-E*; XDV10DK-E*

XDV10BKPE*; XDV10DKPE*

XDV10BKR-*; XDV10BKRE*
XDV10DKR-*; XDV10DKRE*

60 Hz 60 Hz 50 Hz 50 Hz

Nominal (98ºF [37ºC] EAT): 10kW / 2.8 Tons

Maximum (106ºF [41ºC] EAT): 11.8kW/3.4 Tons

Capacity Rating is @ 55ºF (13ºC) Entering Fluid Temperature and

50ºF (10ºC) or lower dew point, rear air inlet.

Electrical Requirements

Input 120V model: 1ph-60 Hz

230V model:

1ph-60 Hz

Input power connections 2 power connections, each model

Full Load Amps 120V model: 2.0A 230V model: 1.0A

Power consumption,

nominal, watts

180 190 190 190

Dimensions, inches (mm)

Height – unit only 14 (355) not including pipe connections

Height – including hard

pipe connections

Height – including one-

shot connections

18-5/8 (473)

19-5/8 (498)

Width 22-7/8 (581)

Depth – Top 39-1/2 (1003)

Depth – Bottom 29-5/8 (752)

Weight, lb (kg)

Unit only 77 (35)

Shipping weight 125 (57)

Installed, with refrigerant 79 (36)

Number of fans 2222

Airflow, Nominal,

3

/ min (m3/ hr)

ft

1000 (1699) with rear inlet. Bottom inlet airflow

may be less, depending on restrictions inside

cabinet

833 (1415) with rear inlet. Bottom inlet airflow
may be less, depending on restrictions inside

Audible noise 78 dBa sound power 73 dBa sound power

Pipe Connections (without Liebert Flex Pipe)

Refrigerant supply

from Liebert XDP/ XDC

Refrigerant return

to Liebert XDP/ XDC

1/2" OD, Cu, (optional 1/2" threaded coupler flex piping)

5/8" OD, Cu, (optional 3/4" threaded coupler flex piping)

Serviceable Parts Fans and electrical components

Cabinet Exterior Finish Black, matte finish, heat-fused powder coat

Options

Condensate sensing

(factory-installed)

Dry contact outgoing signal

Pre-Charged Refrigerant R-134a Refrigerant, one-shot connections

Agency

Approvals CSA 60Hz CSA 50Hz CE 50Hz

* = Revision level of unit

XDV10BS--*; XDV10DS--*
XDV10BSP-*; XDV10DSP-*
XDV10BS-E*; XDV10DS-E*

XDV10BSPE*; XDV10DSPE*

XDV10BSR-*; XDV10BSRE*
XDV10DSR-*; XDV10DSRE*

230V model: 1ph-50 Hz

cabinet

72

Table 38 Liebert XDV8 dimensions—domestic and export

Unit Dimensions Unpacked

Length x Width x Height

inches (mm)

39-1/2 x 22-7/8 x 14

(1003 x 581 x 356)

Model

All Models

Shipping Dimensions

Length x Width x Height

inches (mm)

Domestic Export Unit Only

48 x 40 x 24-1/4
(1219 x 1016 x 616)

45-4/5 x 30-3/4 x 33

(1163 x 781 x 839mm)

Table 39 Liebert XDV10 dimensions—domestic and export

Model

All Models

Shipping Dimensions

Length x Width x Height

inches (mm)

Domestic Export Unit Only

48 x 40 x 24-1/4
(1219 x 1016 x 616)

45-4/5 x 30-3/4 x 33

(1163 x 781 x 839mm)

Unit Dimensions Unpacked

Length x Width x Height

inches (mm)

39-1/2 x 22-7/8 x 14

(1003 x 581 x 356)

Table 40 Liebert XDCF specifications

XD-CF-10-TP-0, XD-CF-10-TPE-0

Models

Cooling capacity, maximum 10kWH / 2.8 Tons / 34,000 BTUh

Conditions

Dimensions, inches (mm)

Height – including pipe connections 31-3/8" (797mm)

Width 13-7/16" (341mm)

Depth 7-5/16" (186mm)

Weight, lb (kg)

Unit only 18 (8.2)

Shipping weight 30 lb. (13.06 kg)

Pipe connections

Refrigerant Supply

from Liebert XDP/Liebert XDC

Refrigerant Return

to Liebert XDP/Liebert XDC

Cabinet exterior finish Gray

Agency

Safety CSA — CE

XD-CF Top EXP, XD-CF-10-BPE-0

XD-CF BTM EXP, XD-CF-10-BP-0

55°F (13°C) entering fluid temperature,

50°F (10°C) or lower dew point

1/2" threaded one-shot coupling on the unit

5/8" threaded one-shot coupling on the unit

Specifications

73

Table 41 Liebert XDH specifications

XDH32DKP-0

XDH32DK--0

XDH32BKP-0

XDH32BK--0

XDH32DKPE0

XDH32DK-E0

XDH32BKPE0

XDH32BK-E0

(60Hz)

point

80 (2032)

Models

Cooling Capacity

Conditions

Electrical Requirements

Input 120V-1ph-60Hz

Input Power Connections

Full Load Amps 5 10 2.5 5

Power Consumption,

Nominal, Watts

Dimensions, inches (mm)

Height—Unit Only 78 (1981)

Height—Including

Pipe Connections

Width 12 (305)

Depth 42 (1067)

Weight, lb (kg)

Unit Only 233 (106) 246 (112) 233 (106) 246 (112)

Shipping Weight 317 (144) 330 (150) 317 (144) 330 (150)

XDH20DKP-0

XDH20DK--0

XDH20BKP-0

XDH20BK--0

XDH20DKPE0

XDH20DK-E0

XDH20BKPE0

XDH20BK-E0

(60Hz)

XDH20, 60Hz Nominal (98ºF [37°C] EAT): 22kW/6.3 Tons
XDH20, 60Hz Maximum(105ºF [40°C] EAT): 25.5kW/7.3 Tons

XDH20, 50Hz Nominal (98ºF [37°C] EAT): 19kW / 5.4 Tons
XDH20, 50Hz Maximum(116ºF [47°C] EAT): 25.5kW/7.3 Tons

XDH32, 60Hz Nominal (98ºF [37°C] EAT): 30kW/8.5 Tons
XDH32, 60Hz Maximum(105ºF [40°C] EAT): 34.5kW/7.3 Tons

XDH32, 50Hz Nominal (98ºF [37°C] EAT): 27kW / 7.7 Tons
XDH32, 50Hz Maximum(108ºF [42°C] EAT): 34.5kW/7.3 Tons

Capacity rating is @ 55ºF (13ºC) Entering Fluid Temperature and 50ºF (10ºC) or lower dew

Two IEC320-C14 power inlets and two IEC

power cords with NEMA 5-15P connectors

600 1200 575 1150

Number of Fans

Airflow, Nominal,

3

ft

/min (m3/hr)

Audible Noise,
Sound Power

Pipe Connections

Refrigerant Supply 1/2" OD, Cu (optional 1/2" threaded one-shot coupling on the unit)

Refrigerant Return 7/8" OD, Cu (optional 7/8" threaded one-shot coupling on the unit)

Serviceable Parts Fans and electrical components

Cabinet Exterior Finish Black, matte finish, heat-fused powder coat

Options

Agency

Approvals CSA 60Hz CE 50Hz, CSA 50/60Hz

2500 (4248) 4000 (6796) 2428 (4125) 3850 (6541)

81 dBa 86 dBa 81 dBa 86 dBa

Condensate Sensing (factory-installed)

Dry contact outgoing signal (24VAC - 1A maximum)

One-shot style flex pipe connections

Uni-directional or bi-directional air diffusers

XDH20DSP-0

XDH20DS--0

XDH20BSP-0

XDH20BS--0

XDH20DSPE0

XDH20DS-E0

XDH20BSPE0

XDH20BS-E0

(50/60Hz)

220-240V-1ph-50Hz, CE /

208-240V-1ph-60Hz, CSA

Two IEC320-C14 power inlets and two IEC

power cords with IEC320-C14 receptacles

6

Specifications

XDH32DSP-0

XDH32DS--0

XDH32BSP-0

XDH32BS--0

XDH32DSPE0

XDH32DS-E0

XDH32BSPE0

XDH32BS-E0

(50/60Hz)

74

Notes

Specifications

75

Specifications

76

Ensuring The High Availability
0f Mission-Critical Data And Applications.

Emerson Network Power, the global leader in enabling business-critical
continuity, ensures network resiliency and adaptability through
a family of technologies—including Liebert power and cooling
technologies—that protect and support business-critical systems.
Liebert solutions employ an adaptive architecture that responds
to changes in criticality, density and capacity. Enterprises benefit
from greater IT system availability, operational flexibility and
reduced capital equipment and operating costs.

While every precaution has been taken to ensure the accuracy
and completeness of this literature, Liebert Corporation assumes no
responsibility and disclaims all liability for damages resulting from use of
this information or for any errors or omissions.
© 2007 Liebert Corporation
All rights reserved throughout the world. Specifications subject to change
without notice.
® Liebert is a registered trademark of Liebert Corporation.
All names referred to are trademarks
or registered trademarks of their respective owners.

Technical Support / Service

Web Site

www.liebert.com

Monitoring

800-222-5877

[e-mail]

Outside the US: 614-841-6755

Single-Phase UPS

800-222-5877

[e-mail]

Outside the US: 614-841-6755

Three-Phase UPS

800-543-2378

[e-mail]

Environmental Systems

800-543-2778

Outside the United States

614-888-0246

Locations

United States

1050 Dearborn Drive

P.O. Box 29186

Columbus, OH 43229

Europe

Via Leonardo Da Vinci 8

Zona Industriale Tognana

35028 Piove Di Sacco (PD) Italy

[phone]

Fax: [phone]

Asia

7/F, Dah Sing Financial Centre

108 Gloucester Road, Wanchai

Hong Kong

852 2572220

Fax: [phone]

SL-16655_REV08_06-08

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The global leader in enabling Business-Critical Continuity.

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Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and ser vice marks of Emerson Electric Co.

©2007 Emerson Electric Co.

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