Emerson Liebert XDF User Manual

Precision Cooling
For Business-Critical Continuity

Liebert XDF

™

User Manual - 14kW Nominal Capacity, 60 Hz

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ESC

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.0 GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0 PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.1 Operational Overview—Self-Contained, Air Cooled Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Operational Overview - Water/Glycol Cooled Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.0 XDF COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.1 Standard Components—Self-Contained, Air Cooled and Water/Glycol Cooled Models. . . . . 9

3.1.1 Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.2 Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.3 Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.4 Side Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1.5 Environmental Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1.6 Control—Liebert’s iCOM Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Coolant Source—Water/Glycol Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.1 Closed-Loop Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.2 Drycooler Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.3 Optional Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3.1 General Enclosure Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3.2 Power Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

4.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2 Recommended Setup Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3 Unloading the XDF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3.1 Handling the Unit While It is Packaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.3.2 Unpack the XDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.3.3 Removing the XDF from Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.4 XDF Site Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.5 Voltage Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.5.1 Voltage Input Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.5.2 Uninterruptible Power Supply—Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.5.3 MP Advanced Power Strips—Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.5.4 Condensate Drain Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.6 Drycooler Installation—Water/Glycol Cooled Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.7 Equipment Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.8 Frame and Enclosure Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.8.1 Internal Mounting Rails. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.8.2 Rear-Mount Rails—Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.9 Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.10 Door—Remove . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.10.1 Remove the Door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.10.2 Quick Door Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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4.11 Side Panels—Remove and Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.11.1 Remove the Left Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.11.2 Remove the Right Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.11.3 Replace a Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.0 PIPING CONSIDERATIONS—WATER/GLYCOL MODELS ONLY . . . . . . . . . . . . . . . . . . . . . . . 27

5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.2 Closed Loop Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.2.1 Expansion Tanks, Fluid Relief Valves and Other Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.2.2 Corrosion Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.2.3 Freeze Protection—Coolant Type and Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.3 Drycooler Loop System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.3.1 Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.0 FILLING THE XDF WITH COOLANT—WATER OR GLYCOL . . . . . . . . . . . . . . . . . . . . . . . . . .30

6.1 Preparing the System for Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1.1 XDF Water/Glycol Cooled Unit Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1.2 Filling the System with Water or Glycol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.0 ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

7.1 Utility Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.1.1 Route Input Power Cables Through the XDF’s Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.0 CABLE MANAGEMENT OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.1 Cable Management Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.2 Cable Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.3 Cable Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.3.1 Top Cover and Back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.4 Optional Cable Management Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

9.0 STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.1 XDF Startup Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.1.1 Site Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.2 Starting the XDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

10.1 Environmental Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.2 iCOM Components and Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.3 Navigating Through the iCOM Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

10.3.1 Accessing Menus and Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

10.3.2 Entering the Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

10.4 Changing Operational Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10.5 Changing iCOM’s Display Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.6 Changing the XDF’s Default Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

10.7 Operation With the Door Open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10.8 Backup Ventilation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10.9 XDF Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

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10.10 Uninterruptible Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

11.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

11.1 Periodic Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

12.0 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

12.1 Optional Power Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

12.2 Optional Managed Power - Advanced Power Strips, Vertical- or Horizontal-Mount . . . . . . 52

FIGURES

Figure 1 Component location, general operational layout of self-contained, air cooled model . . . . . . . . . . . 3

Figure 2 Component location of water/glycol cooled model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3 Component location, rear of XDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 4 Dimensional data, self-contained, air cooled model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 5 Dimensional data, water/glycol cooled model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 6 Dimensional data, all models—top, bottom and cable entry cutouts. . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 7 Cooling system components—self-contained, air cooled models . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 8 Cooling system components—water cooled models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 9 XDF with iCOM controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 10 Water/glycol XDF supplied by closed-loop water system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 11 Water/glycol cooled general arrangement with drycooler as coolant source . . . . . . . . . . . . . . . . . 14

Figure 12 Optional power equipment, examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 13 Recommended unit handling equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 14 Removing XDF packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 15 Remove lag bolts and brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 16 Roll XDF off the shipping skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 17 XDF clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 18 Alternate condenser fan power connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 19 Condensate drain connection and adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 20 Recommended equipment arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 21 Customer electrical connections and cable entry points—self-contained, air cooled units. . . . . . 31

Figure 22 Customer electrical connections and cable entry points—water/glycol cooled units . . . . . . . . . . 32

Figure 23 Route input power cords through XDF top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 24 Cable rings, Velcro straps on XDF rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 25 Cable Management Channel lengths. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 26 Cable management mounting locations and options: Velcro cable straps, Cable Spools . . . . . . . 36

Figure 27 Cable management accessories: Cable Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 28 iCOM controller keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 29 iCOM display components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 30 iCOM graphical display default screen components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 31 iCOM simple display default screen components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 32 iCOM user menu, Page 1 of 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Figure 33 Accessing additional menu lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Figure 34 Display setup screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 35 Airflow pattern, backup ventilation operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 36 XDF model numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

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TABLES

Table 1 Optional condensate pump performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Table 2 Water supply flow rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 3 Ethylene glycol concentrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 4 Glycol supply flow rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 5 Drycooler selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 6 Volume in standard Type “L” copper piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 7 Keyboard icons and functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 8 User menu icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Table 9 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 10 Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 11 Total heat rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 12 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 13 UPS performance data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table 14 MP Advanced Power Strip specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

iv

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions that must be closely followed during installation and
maintenance of this unit to maintain compliance with agency listings. Read all safety and operating
instructions before attempting to operate the XDF. Adhere to all warnings on the unit and in this
manual. Follow all operating and user instructions.

This product is designed for commercial / industrial use only. This product is not intended for use
with life support or other U.S. FDA designated “critical” devices. Maximum loads must not exceed
those shown on the Liebert XDF serial tag.

Operate this product in an indoor environment at an ambient temperature between 35°F and 104°F
(1.6°C to 40°C). Install in a clean environment, free from moisture, flammable liquids, gases and cor­rosive substances.

This product must be connected to and powered by suitable AC supplies, rated in accordance with the
unit’s serial tag. It must be suitably grounded and protected by circuit breakers or fuses.

Power extension cables, if used, must be rated for the load and must not exceed 20 ft. (6.1m) in length.

Liebert recommends using shielded cables for all external communication interfaces.

Ensure that the XDF has proper ventilation. Never block or insert objects into the ventilation holes or
other openings. Maintain a minimum clearance of 36 in. (915mm) in front, behind, on the right side
and above the self-contained, air cooled XDF for proper airflow and service. The water/glycol cooled
XDF requires 36 in. (915mm) clearance in front, behind and on the right side. It does not require top
clearance.

1

1.0 GLOSSARY OF SYMBOLS

Hazardous Voltage Present

Note following instructions

Consult user manual for additional information

Indicates weight

Glossary of Symbols

Indicates ground connection

Indicates alternating current

2

Product Description

2.0 PRODUCT DESCRIPTION

Congratulations on purchasing a Liebert XDF. The XDF is an integrated equipment cabinet with
built-in cooling and intelligent control to protect mission-critical enterprise systems from extreme
heat. The XDF provides an organized, secure, controlled environment for your sensitive electronic
equipment. The unit is available in a variety of configurations to suit your electronic equipment’s
environmental requirements.

The self-contained, air cooled Liebert XDF is intended for installation in open areas. Installation in
closed-in areas, such as in a closet, alcove or similar space, requires field-supplied ducting, an exter­nal booster fan and sufficient makeup air. Contact your local Liebert representative before installing
the XDF in an area that might inhibit heat dissipation.

The water/glycol cooled unit, however may be installed in closed-in areas, subject to clearances of
three feet in the front, rear and right side. See Figure 6. This is possible because heat rejected from
the XDF cabinet is carried away in the coolant.

2.1 Operational Overview—Self-Contained, Air Cooled Model

The self-contained, air cooled XDF model employs a compressorized, direct expansion cooling system
rated at 14kW to supply cooling air to rack-mounted equipment. A bank of fans circulates this cooling
air through the electronic equipment in the XDF (see Figure 1). An evaporator coil extracts heat
from the circulating air. That heat is transferred to a condenser at the top of the XDF and exhausted
into the room.

The XDF’s backup ventilation system operates automatically if power fails or if any XDF cooling sys­tem component fails.

Figure 1 Component location, general operational layout of self-contained, air cooled model

Condenser Coil transfers
heat extracted from
electronic equipment
cabinet to incoming air

Heated Air Exhaust

Condenser Air
Entry Point

iCOM Controller

Rack-Mount Equipment
Compartment (isolated
from external air and top
condenser section)

Condenser Air
Entry Point

Condenser
Coil - 1 of 2

Evaporator Coil
extracts heat from
air circulated through
the rack equipment
compartment

Backup Ventilation
Air Intake

Compressor

Evaporator Fans
circulate cooling air

3

2.2 Operational Overview - Water/Glycol Cooled Model

The water/glycol cooled XDF model employs a single-stage cooling system rated at 14kW to supply
cooling air to the rack-mounted equipment. A bank of fans circulates this cooling air through the elec­tronic equipment in the XDF (see Figure 1).

An evaporator coil extracts heat from the circulating air. That heat is transferred to a brazed plate
condenser at the top of the XDF, transferred to the cooling water or glycol solution and is piped out of
the unit.

Coolant is piped through the back of the XDF through supply and return pipes with 1" female NPT
connections (refer to Figure 2 or Figure 6).

The XDF’s backup ventilation system operates automatically if power fails or if any XDF cooling sys­tem component fails.

If water is used as the coolant, Liebert recommends employing a closed system connected to an exter­nal condensing unit. A closed water supply system protects the XDF from particles and other contam­inants that might reduce cooling efficiency and damage the XDF.

Figure 2 Component location of water/glycol cooled model

Brazed Plate
Condenser
(behind grille)

Product Description

Coolant Return - in rear

Coolant Supply - in rear

iCOM Controller

Rack-Mount
Equipment
Compartment
(isolated from
external air)

Front of XDF

Evaporator Coil
extracts heat from
air circulated
through
the rack equipment
compartment

Backup Ventilation
Air Intake

Compressor

Evaporator Fans
circulate cooling air

4

Figure 3 Component location, rear of XDF

SELF-CONTAINED

AIRCOOLEDMODEL

Condenser air intakes,
perforated grilles

Product Description

Condenser fan
(removable to reduce
height temporarily)

Backup ventilation
damper (air exit)

Service access for
gauges to be inserted
for testing

Three-phase electrical
cord, 10 feet (3m)

Single-phase electrical cord,
10 feet (3m)

WATER/GLYCOL COOLED MODEL

Return Line
(1" female,
NPT)

Casters

Door handle

Rear door

Condensate drain

Stabilizing foot
(one of four)

Supply Line
(1" female, NPT)

Backup ventilation
damper (air exit)

Service access for
gauges to be inserted
for testing

Three-phase electrical
cord, 10 feet (3m)

Single-phase electrical cord,
10 feet (3m)

Door handle

Rear door

Condensate drain

Stabilizing foot

Casters

5

(one of four)

Figure 4 Dimensional data, self-contained, air cooled model

34-1/8"

(867mm)

24-1/8"

Control
Side

2-1/2"

(64mm)

(2026mm)

Rack Section

(613mm)

79-3/4"

Product Description

82-1/4"

(2089mm)

36U

2-5/8"

(68mm )

FRONT

Cooling Section
9-5/16" (252mm)

Single -Phase Power Cord
Entrance ; factory-supplied ,
10' (3m) NEMA 5- 15P

3-Phase Power Cord
Entrance ; factory - supplied ,
10' ( 3m) NEMA L21-30P

Capped Service
Gauge Access

LEFT SIDE

24-3/8" to 32-11/32

(620-821mm)

mounting depth

49-1/2” (1257mm)

45-3/4”

(1162mm)

Backup
Ventilation
Air Outlet

4-1/2”

(114mm)

Cover
Plate

DETAIL A

Condensate Drain
Connection

6

Detail

Area

“A”

REAR VIEW

Figure 5 Dimensional data, water/glycol cooled model

Rack Section

24-1/8"

(613mm)

79-3/4"

(2026mm)

2-5/8"

(68mm)

Cooling Section
9-5/16" (252mm)

Control
Side

5-1/2”

(139.7mm)

1.88”

(47.6mm)

7”

(177mm)

45-3/4”

(1162mm)

Product Description

6.95”

(176.5mm)

Backup
Ventilation
Air Outlet

FRONT

42U

4-1/2”

(114mm)

Detail

Area

“A”

REAR VIEW

Single -Phase Power Cord
Entrance ; factory-supplied ,
10' (3m) NEMA 5- 15P

3-Phase Power Cord
Entrance ; factory - supplied ,
10' ( 3m) NEMA L21-30P

Capped Service
Gauge Access

LEFT SIDE

24-3/8" to 32-11/32

(620-821mm)

mounting depth

49-1/2” (1257mm)

Cover
Plate

Condensate Drain
Connection

DETAIL A

7

Figure 6 Dimensional data, all models—top, bottom and cable entry cutouts

Product Description

4-3/8"

(112mm)

4"

(102mm)

4-1/2"

(114mm)

B

TOP VIEW

A

15"

(381mm)

BOTTOM VIEW

Front

Cable

Entry

Cutouts

4-1/2"

(114mm)

Self-contained, air cooled model shown; water cooled unit
dimensions are identical; water cooled unit does not have
condenser fan.

Cable Entry Cutout

Front

Stabilizing Foot,

1 of 4

A - Rack-Mount Width

EIA Nominal: 19" (483mm)
Inside Dimension: 17-13/16 (452)

B - Adjustable Mounting Depth

Minimum: 24" (620mm)
Maximum: 32-11/32 (821)

Caster, 1 of 4

8

XDF Components

3.0 XDF COMPONENTS

3.1 Standard Components—Self-Contained, Air Cooled and Water/Glycol Cooled
Models

3.1.1 Frame

The self-contained, air cooled XDF is 82-1/4 inches (2089mm) tall; the water/glycol cooled unit, 79-3/4
(2026) tall. The self-contained, air cooled XDF has 36U (63 inches) of usable rack height. The
water/glycol cooled XDF has 42U (73-1/2 inches) of usable rack height. Both the self-contained, air
cooled and water/glycol cooled XDF units have a standard EIA rack width of 19 inches (483mm).

The XDF frame consists of heavy-duty, riveted, 12-gauge steel. The unit has fixed front rails and
adjustable rear rails with square holes for installing rack-mount equipment. The front and rear verti­cal frame members accommodate internal mounting rail options and provide space to route and man­age cabling.

Cutouts in the top (front and rear) permit customer cable entry (Figure 6). All units have casters,
stabilizing feet and a grounding lug.

3.1.2 Enclosure

The XDF is equipped with seals to maintain a separate air volume inside the equipment compart­ment.

NOTE

Preventing air infiltration into the XDF will significantly improve overall performance and
reduce the amount of condensate generated. Ensure that all cable entrances are sealed and that
doors are closed securely. Check to ensure that all panels are properly installed; this is
especially important if panels have been removed in the field.

3.1.3 Doors

The front and rear doors are framed from sheet metal and are removable. A multi-point latch with
key lock is provided for security. The front door may be either solid sheet metal or have a Plexiglas
window for viewing installed equipment. The rear door is solid, full-height sheet metal.

3.1.4 Side Panels

Side panels are constructed of sheet metal and use special fasteners to permit removal for mainte­nance. Insulation is included to provide improved thermal and sound insulation, as well as to prevent
condensate formation on the outside of the unit.

™

9

3.1.5 Environmental Control

The XDF supplies cooling air—68°F to 77°F (20-25°C)—to electronic equipment in the rack-mount
equipment compartment.

In normal operation, six fans at the right front corner of the XDF circulate cooling air through the
equipment compartment. The laterally circulating air absorbs heat generated by the electronic equip­ment and transfers the heat to an evaporator coil at the right rear of the XDF. The heat is removed
differently in the self-contained, air cooled and water/glycol cooled units.

Heat Removal—Self-Contained, Air Cooled XDF

Heat removed from the self-contained, air cooled XDF cabinet is transferred to condenser coils at the
top of the XDF, in a section separated from the equipment compartment. The condenser fan on top of
the self-contained, air cooled XDF draws ambient air through the condenser coils and exhausts the
heat-laden air into the room.

Heat Removal—Water/Glycol Cooled XDF

The water/glycol cooled XDF transfers the heat captured by the evaporator coil to a brazed plate con­denser at the top of the unit, also separate from the equipment compartment. That heat is then car­ried away by the cooling water or glycol to a condenser or drycooler.

Figure 7 Cooling system components—self-contained, air cooled models

XDF Components

Condenser Fan

Condenser Coil

Condenser Air
Intake Vent for
Normal Operation

Backup Ventilation Intake
Vent (exhaust vent is on
rear)

Evaporator Coil (behind
damper) extracts heat
from circulated air

10

RearFront

Figure 8 Cooling system components—water cooled models

Brazed Plate
Condenser

XDF Components

Coolant
Return Connection

Coolant
Supply
Connection

Backup Ventilation Intake
Vent (exhaust vent is on
rear)

Evaporator Coil
(behind damper)
extracts heat from cir­culated air

RearFront

11

3.1.6 Control—Liebert’s iCOM Controller

The XDF is equipped with Liebert’s iCOM controller for all programming functions on the XDF. The
menu-driven, 128 x 64 dot matrix graphic display shows the status of the conditioned space, set­points, alarm status and settings, event histories and the time.

Refer to 10.2 - iCOM Components and Functions and 10.3 - Navigating Through the iCOM
Display for details or call 800-543-2778.

Figure 9 XDF with iCOM controller

XDF Components

?

ESC

Liebert iCOM controller

12