Emerson 3000 User Manual 4

Precision Cooling
For Business-Critical Continuity™

Liebert® Challenger™ 3000 with Liebert iCOM

Installation Manual - 3 & 5 Tons, 50 & 60Hz

®

TABLE OF CONTENTS

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

SAVE THESE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.1 System Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1.1 Self-Contained Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1.2 Chilled Water Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1.3 Split Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.0 INSTALLATION (APPLICABLE TO ALL MODELS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Room Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Equipment Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Equipment Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4.1 Handling With Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.4.2 Removal of Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.5.1 Drain Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.5.2 Humidifier Supply Water—Optional Infrared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.6 Facility Fluid and Piping Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.7 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.7.1 Electrical Field Connections for Liebert Challenger 3000 Models . . . . . . . . . . . . . . . . . . . . . 20

2.8 Balancing the Air Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.8.1 Under-Floor Discharge Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.8.2 Ducted Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.8.3 Plenum Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.9 Checklist for Completed Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.0 AIR-COOLED MODELS—SELF-CONTAINED COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . .24

3.1 Condenser Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.1 Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.2 Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.3 Liebert Lee-Temp

™

/Flood Back Head Pressure Control Condensers . . . . . . . . . . . . . . . . . . . 24

3.3 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.4 Fan Speed Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

™

3.5 Air-Cooled Condenser with Liebert Lee-Temp

“Flooded Condenser” Head Pressure

Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.0 WATER-COOLED MODELS—SELF-CONTAINED COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . 36

4.1 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.2 Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

i

4.3 Water Regulating Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4.3.1 Standard Valve - 150psig (1034 kPa) System for 3 & 5-Ton Units (Johnson Controls
Valve) High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units (Johnson

Controls Valve) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

4.3.2 High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve) . . . . . . . 40

4.4 Motorized Ball Valve—Digital Scroll Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.4.1 Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.4.2 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.4.3 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.4.4 Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.4.5 Manual Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.0 GLYCOL/GLYCOOL-COOLED MODELS—SELF-CONTAINED COMPRESSOR . . . . . . . . . . . . 42

5.1 Drycooler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.2 Drycooler Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.3 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.3.1 Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.3.2 Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.3.3 Pump and Drycooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.4 Glycol Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5.4.1 Expansion Tanks, Fluid Relief Valves and Other Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.5 Filling Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.5.1 Preparing the System for Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.5.2 Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.5.3 Filling the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5.5.4 Motor Ball Valve—Digital Scroll Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.6 Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.7 Glycol Regulating Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.7.1 Standard Valve - 150psig (1034 kPa) System for 3 & 5-Ton Units (Johnson Controls
Valve) High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units (Johnson

Controls Valve) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.7.2 High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve) . . . . . . . 54

5.7.3 Testing Valve Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6.0 CHILLED WATER MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

6.1 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.0 SPLIT SYSTEM MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.1 Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.1.1 Air-Cooled Condensing Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.1.2 Water/Glycol-Cooled Condensing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.2 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.2.1 Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.2.2 Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.3 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.3.1 Refrigerant Loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.3.2 Quick Connect Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

7.4 Outdoor Air-Cooled Condensing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

7.5 Centrifugal Air-Cooled Condensing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

7.5.1 Installing the Indoor Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

7.5.2 Ducting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

7.6 Water and Glycol-Cooled Condensing Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

7.6.1 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

7.6.2 Condenser Water Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

7.6.3 Regulating Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

7.6.4 Glycol Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

8.0 R407C REFRIGERANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

8.1 Calculating Subcooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

FIGURES

Figure 1 Removing the Liebert Challenger 3000 from skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 2 Upflow (BU) cabinet dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 3 Downflow (BF) cabinet dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4 Piping connections for air-cooled units - Downflow models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 5 Piping connections for air-cooled units - Upflow models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 6 Piping connections for split system fan coil units - Downflow models . . . . . . . . . . . . . . . . . . . . . 13

Figure 7 Piping connections for split system fan coil units - Upflow models . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 8 Piping connections for water/glycol and GLYCOOL units - Downflow models . . . . . . . . . . . . . . 15

Figure 9 Piping connections for water/glycol and GLYCOOL units - Upflow models . . . . . . . . . . . . . . . . . 16

Figure 10 Piping connections for chilled water self-contained units - Downflow models . . . . . . . . . . . . . . . 17

Figure 11 Piping connections for chilled water self-contained units - Upflow models . . . . . . . . . . . . . . . . . 18

Figure 12 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 13 Electrical field connections for Liebert iCOM

Figure 14 Air-cooled condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 15 General arrangement—Air-cooled models with fan speed control . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 16 General arrangement—Air-cooled models with digital scroll and fan speed control . . . . . . . . . . 31

Figure 17 General arrangement—Air-cooled models with Liebert Lee-Temp
Figure 18 General arrangement—Air-cooled models with digital scroll and Liebert Lee-Temp

Figure 19 General arrangement—Water-cooled models with scroll compressor . . . . . . . . . . . . . . . . . . . . . . 37

Figure 20 General arrangement diagram—Water-cooled models with digital scroll . . . . . . . . . . . . . . . . . . 38

Figure 21 Johnson Controls valve adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 22 Metrex Valve adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 23 Drycoolers and pump packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 24 Pump packages—expansion tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 25 General arrangement—Glycol-cooled models with scroll compressor . . . . . . . . . . . . . . . . . . . . . . 50

Figure 26 General arrangement—Glycol-cooled models with digital scroll . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 27 General arrangement—GLYCOOL models with scroll compressor. . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 28 General arrangement—GLYCOOL models with digital scroll compressor . . . . . . . . . . . . . . . . . . 53

Figure 29 Chilled water general arrangement - Upflow (BU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 30 Chilled water general arrangement - Downflow (BF) models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Figure 31 Refrigerant piping diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Figure 32 Outdoor air-cooled condensing unit—horizontal air discharge models . . . . . . . . . . . . . . . . . . . . . 62

Figure 33 Outdoor air-cooled condensing unit—top air discharge models . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Figure 34 Electrical field connections, prop fan condensing module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Figure 35 Detail of ceiling hanging bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

®

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

™

. . . . . . . . . . . . . . . . . . . . . . 34

™

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iii

Figure 36 3-ton centrifugal air-cooled condensing unit dimensional data & piping connections . . . . . . . . . 69

Figure 37 3-ton centrifugal air-cooled condensing unit (con’t.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Figure 38 5-ton centrifugal air-cooled condensing unit dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Figure 39 5-ton centrifugal air-cooled condensing unit dimensional data (con’t.) . . . . . . . . . . . . . . . . . . . . . 72

Figure 40 Split systems general arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Figure 41 3-ton water/glycol-cooled condensing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Figure 42 3-ton water/glycol-cooled condensing unit (con’t.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Figure 43 5-ton water/glycol-cooled condensing unit dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Figure 44 5-ton water/glycol-cooled condensing unit (con’t.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

TABLES

Table 1 Unit net weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 2 Piping connection size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 3 Recommended free area ft

and 600 fpm (2.8 and 3.1 m/s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Table 4 Air-cooled condenser statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 5 Recommended line sizes — OD copper, inches *. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 6 Equivalent lengths (feet) for various pipe fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 7 Indoor unit refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 8 Line charges - refrigerant per 100 ft. (30 m) of Type “L” copper tube . . . . . . . . . . . . . . . . . . . . . . 27

Table 9 Condenser refrigerant (per serial tag) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 10 Fan speed suction pressure transducer settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 11 Liebert Lee-Temp suction pressure transducer settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 12 Refrigerant control settings psi (kPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 13 Room dew point temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Table 14 Indoor unit glycol volume approximate gallons (liters) max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 15 Volume in standard Type “L” copper piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 16 Ethylene glycol concentrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Table 17 Mounting hole dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 18 Drycooler data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 19 Glycol pump data* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 20 Refrigerant control settings psi (kPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Table 21 Unit refrigerant charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Table 22 Recommended refrigerant lines (R407C) sizes OD copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Table 23 Line coupling sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Table 24 Equivalent lengths (feet) for various pipe fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Table 25 Line charges - refrigerant per 100 ft. (30 m) of Type “L” copper tube . . . . . . . . . . . . . . . . . . . . . . 60

Table 26 Horizontal air discharge cabinet and floor planning dimensional data. . . . . . . . . . . . . . . . . . . . . 63

Table 27 Horizontal air discharge piping and electrical connection data . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Table 28 Cabinet and floor planning dimensional data - prop fan condensing modules, top air

discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Table 29 Piping and electrical connections - top air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Table 30 Indoor centrifugal condensing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Table 31 Airflow CFM (CMH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Table 32 Water and glycol-cooled condensing unit data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Table 33 R407C pressure/temperature chart for operation and superheat (discharge/hot gas and

suction gas) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Table 34 R407C pressure/temperature chart for subcooling only (liquid measurements). . . . . . . . . . . . . . 80

2

(m2) for grilles or perforated panels at output velocities of 550

IMPORTANT SAFETY INSTRUCTIONS

!

!

!

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that should be followed during the installation
and maintenance of the Liebert Challenger 3000. Read this manual thoroughly before attempting to
install or operate this unit.

Only qualified personnel should move, install or service this equipment.

Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in
this manual. Follow all operating and user instructions.

WARNING

Arc flash and electric shock hazard. Disconnect all local and remote electric power supplies
and wear protective equipment per NFPA 70E before working within the electrical enclosure.
Failure to comply can cause injury or death.

Customer must provide earth ground to unit per NEC, CEC and local codes as applicable.

Before proceeding with installation, read all instructions, verify that all the parts are included
and check the nameplate to be sure the voltage matches available utility power.

The Liebert iCOM
Off” mode. Some internal components require and receive power even during the “Unit Off”
mode of Liebert iCOM control.

The factory-supplied optional disconnect switch is inside the unit. The line side of this switch
contains live high-voltage.

The only way to ensure that there is NO voltage inside the unit is to install and open a remote
disconnect switch and check the internal power with a voltmeter. Refer to unit electrical
schematic.

Follow all local codes.

®

microprocessor does not isolate power from the unit, even in the “Unit

Important Safety Instructions

WARNING

Risk of explosive discharge from high-pressure refrigerant. Can cause injury or death.
This unit contains fluids and/or gases under high pressure.
Relieve pressure before working with piping.

WARNING

Risk of refrigerant system rupture or explosion from overpressurization. Can cause
equipment damage, injury or death.

Local building or plumbing codes may require that a fusible plug or other type of pressure
relief device be installed in the system.

For systems requiring EU CE compliance (50Hz), the system installer must provide and
install a discharge pressure relief valve rated for a maximum of 500psig (34bar) in the high
side refrigerant circuit. Do not install a shutoff valve between the compressor and the
field-installed relief valve. The pressure relief valve must be CE certified to the EU Pressure
Equipment Directive by an EU “Notified Body.”

NOTE

The Liebert indoor cooling unit has a factory-installed high-pressure safety switch in the high
side refrigerant circuit. A pressure relief valve is provided with Liebert Lee-Temp
Consult local building codes to determine whether the Liebert Fan Speed Control and VFD
condensers will require field-provided pressure relief devices. A fusible plug kit for Liebert FSC
and VFD condensers is available for field installation.

™

condensers.

1Liebert

®

Challenger 3000

™

Important Safety Instructions

!

!

!

!

WARNING

Risk of improper handling of top heavy unit. Can cause unit to fall over, resulting in
equipment damage, serious injury or death.

Read all instructions before attempting to move, lift, remove packaging from or preparing
unit for installation.

WARNING

Risk of high-speed moving parts. Can cause injury or death.

Disconnect all local and remote electric power supplies before working in the unit.

Do not operate upflow units without installing a plenum, ductwork or guard over the blower
opening(s) on the top surface of the unit cabinet for protection from rotating blower wheel(s).

CAUTION

Risk of contact with hot surfaces. Can cause injury.

The compressor, refrigerant discharge lines, humidifiers and reheats are extremely hot
during unit operation. Allow sufficient time for them to cool before working within the unit
cabinet. Use extreme caution and wear protective gloves and arm protection when working on
or near hot compressors, discharge lines, humidifiers and reheats.

CAUTION

Risk of sharp edges, splinters and exposed fasteners. Can cause injury.

Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,
shoes and glasses should attempt to move the unit, lift it, remove packaging from or prepare
the unit for installation.

NOTICE

Risk of leaking water/glycol. Can cause equipment and building damage.
This unit requires a water/glycol. drain connection. It may also require an external

water/glycol supply to operate.
Improper installation, application and service practice can result in water/glycol leakage from

the unit. Water/glycol leakage can result in severe property damage and loss of critical data
center equipment.

Do not locate unit directly above any equipment that could sustain water damage.
Emerson recommends installing monitored leak detection equipment for unit and

water/glycol supply lines.

NOTICE

Risk of a leaking coil due to freezing and/or corrosion. Can cause equipment and building
damage.

Cooling coils and piping systems that are connected to open cooling towers or other open
water/glycol systems are at high risk of freezing and premature corrosion. Fluids in these
systems must contain the proper antifreeze and inhibitors to prevent freezing and premature
coil corrosion. The water or water/glycol solution must be analyzed by a competent water
treatment specialist before startup to establish the inhibitor requirement. The water or
water/glycol solution must be analyzed every six months to determine the pattern of inhibitor
depletion. The complexity of water-caused problems and their correction makes it important
to obtain the advice of a water treatment specialist and follow a regularly scheduled
maintenance program.

Liebert® Challenger 3000

™

2

Important Safety Instructions

NOTICE

Risk of damage from forklift. Can cause unit damage.
Keep tines of the forklift level and at a height suitable to fit below the skid and/or unit to

prevent exterior and/or underside damage.

NOTICE

Risk of improper storage. Can cause unit damage.
Keep the Liebert Challenger 3000 upright, indoors and protected from dampness, freezing

temperatures and contact damage.

3Liebert

®

Challenger 3000

™

1.0 INTRODUCTION

1.1 System Descriptions

Liebert Challenger 3000 Precision Cooling systems are available in three main system configurations:

• self-contained system with a scroll compressor in the room unit

• self-contained chilled water system

• split system with an evaporator section and a remote condensing unit

All three types are available in upflow or downflow configurations. The standard upflow configuration
is front return. All models require three-phase power. Units are available in 208, 230, 460, or 575V,
60Hz; and 200, 230 or 380/415V, 50Hz.

The following features are included as standard in all room units regardless of the type of system:
Liebert iCOM
stainless steel electric reheat, 2" filter, individual high voltage fused protection and fan assembly.

1.1.1 Self-Contained Systems

Air-Cooled Models

Complete refrigeration system including hot gas bypass and crankcase heater with standard scroll
compressor, standard condenser and fan speed control for 95°F (35°C) ambient at sea level. Optional
Digital scroll compressor with unloading solenoid valve is also available. Digital scroll compressor
systems do not include hot gas bypass.

®

control, A-frame coil (V-frame on upflows), infrared humidifier, finned tubular

Introduction

Water-Cooled Models

Compete refrigeration system including hot gas bypass with standard scroll compressor, water/glycol­cooled condenser and two-way water regulating valve with bypass. Optional digital scroll compressor
with unloading solenoid valve is also available. Digital scroll compressor systems use a 2-way
motorized ball valve in lieu of the regulating valve; they do not include hot gas bypass.

Glycol-Cooled Models

The water-cooled model as described above plus pump package and 95°F (35°C) design ambient
drycooler.

GLYCOOL Models (5-Ton Only)

Complete refrigeration system including hot gas bypass with standard scroll compressor, glycol
condenser and three-way water regulating valve plus an integrally piped Econ-O-Coil with three-way
modulating control valve. Optional digital scroll compressor with unloading solenoid valve is also
available. Digital scroll compressor systems use a 3-way motorized ball valve in lieu of the regulating
valve; they do not include hot gas bypass.

1.1.2 Chilled Water Models

Chilled Water models include chilled water piping, three-way modulating valve, and actuator
assembly.

Liebert® Challenger 3000

™

4

1.1.3 Split Systems

Each air-cooled split system consists of an evaporator section and one of the following condensing
units.

Prop Fan Air-Cooled

Prop Fan units include scroll compressor, condenser coil, prop fan, high pressure switch, hot gas
bypass and Liebert Lee-Temp

Centrifugal Fan Air-Cooled

Centrifugal Fan units include scroll compressor, condenser coil, centrifugal blower assembly,
high-pressure switch, hot gas bypass and Liebert Lee-Temp head pressure control. Unit must be
mounted indoors. Duct flanges are optional.

Water-Cooled

Each water-cooled split system consists of an evaporator section and a water/glycol condensing unit,
which includes scroll compressor, coaxial condenser, water regulating valve, hot gas bypass and
high-pressure switch. Design pressure is 150 psi (1034 kPa) as standard and 350 psi (2413 kPa) as
optional.

Glycol-Cooled

Each glycol-cooled split system consists of an evaporator section, a water/glycol condensing unit (as
described above), a pump package, and a 95°F (35°C) design ambient drycooler.

™

head pressure control. Unit is designed for outdoor location.

Introduction

5Liebert

®

Challenger 3000

™

2.0 INSTALLATION (APPLICABLE TO ALL MODELS)

!

2.1 Room Preparation

The room should be well insulated and must have a sealed vapor barrier. The vapor barrier in the
ceiling can be a polyethylene film type. Use a rubber or plastic base paint on concrete walls and floors.
Doors should not be undercut or have grilles in them.

Outside (or fresh) air should be kept to an absolute minimum. Outside air adds to the heating,
cooling, humidifying and dehumidifying loads of the site. It is recommended that outside air be kept
below 5% of the total air circulated in the room and be preconditioned.

2.2 Equipment Inspection

Installation (Applicable to all Models)

Upon arrival of the unit, inspect all items for visible and concealed damage. Damage should be
immediately reported to the carrier and a damage claim filed with a copy sent to Emerson
sales representative.

2.3 Location Considerations

The unit can sit on top of an accessible elevated flooring system. It may be necessary to furnish
additional pedestal support below the unit to ensure maximum structural support (see Table 1). A
separate floor stand for the unit may be used as support, independent of the elevated floor and
installed prior to the flooring system.

Provide approximately 34" (864mm) service clearance on the front of the unit.

NOTE

GLYCOOL units require 34" (864mm) service clearance on the right side of the unit in
addition to front service clearance.

Avoid placing units in an alcove or at the extreme end of a room that has a high aspect ratio (long,
narrow room). Ducted units can be placed in room corners or ends as long as front access is
maintained. Placing units too close together will reduce the effectiveness of the air distribution.

NOTE

Locate and remove shipping screw on fan motor base.

2.4 Equipment Handling

®

or to your

WARNING

Risk of improper handling of top heavy unit. Can cause unit to fall over, resulting in
equipment damage, serious injury or death.

Read all of the following instructions before attempting to move, lift, remove packaging from
or preparing unit for installation.

The instructions below are to be adhered to when handling this unit with or without the skid.
There is the potential for this unit to tip over if it is handled improperly.

Liebert® Challenger 3000

™

6

2.4.1 Handling With Skid

Remove plywood skirting holding
unit and skid in place.

Raise unit with forklift
or similar machine.

• Always keep the unit upright, indoors and protected from damage.

• If possible, transport the unit using a fork lift; otherwise, use a crane with belts or cables,
avoiding pressing on the top edges of the packaging.

• If using a fork lift, make sure the forks, if adjustable, are spread to the widest allowable distance
to still fit under the skid.

NOTICE

Risk of overhead interference. Can cause unit and/or structure damage.
Refer to the installation plans prior to moving the unit to verify clearances.
While on the skid, the unit is too tall to fit through a standard height doorway (83 in. or

2108mm tall). Any attempt to move the unit, while on the skid, through a standard doorway
will cause damage to the unit.

2.4.2 Removal of Skid

• Remove the plywood skirting that keeps the skid and unit in place.

• Raise the Liebert Challenger 3000 off the skid. Emerson recommends using a fork lift (see
Figure 1) or similar machine to ensure that the unit is lifted properly.

• Once the unit is raised, the skid can be removed.

Figure 1 Removing the Liebert Challenger 3000 from skid

Installation (Applicable to all Models)

Table 1 Unit net weight

Model Lb. (kg)

036E/035E 535 (243)

060E/059E 545 (247)

042A/040A 615 (279)

067A/065A 670 (304)

046WG/045WG 700 (318)

071WG/070WG 750 (340)

061G/058G 785 (356)

068C/072C 545 (247)

102C/101C 555 (252)

7Liebert

®

Challenger 3000

™

Figure 2 Upflow (BU) cabinet dimensions

A

Shaded area indicates a recommended
clearance of 34" (864mm) for component
access. Right side access suggested for
GLYCOOL units.

DPN000350
Rev. 1

FRONT VIEW
(front return configuration)

32-1/2"

(826mm)

Overall

Dimension

32-1/2"

(826mm)

Overall

Dimension

32-1/2"

(826mm)

32-1/2"

(826mm)

Blower Outlet with
1" (25.4mm) Flange

7/8" (22.2mm) Flange for
Duct or Plenum Connection

Return Air Louvers

Plenum available with:

-2, 3 or 4 grilles.

-Solid sides with a 7/8" (22mm)
duct flange on top.

Standard Piping Location

Standard Electrical Outlet
Location Through Unit

Standard Electrical Outlet
Location Through Plenum

29-3/4"

(756mm)

1-5/8"

(41mm)

9-5/8"

(244mm)

30-1/2"

(775mm)

30-1/2"

(775mm)

1-7/8"

(48mm)

12-1/2"

(318mm)

5-1/2" (140mm)

8-1/2"

(216mm)

Filter Access
Through Top

7-1/2"

(191mm)

29"

(737mm)

2-1/2"

(67mm)

1-3/4 "

(44mm)

REAR VIEW

(rear return configuration)

94"

(2388mm)

76"

(1930mm)

6-7/8" (175mm)

10-1/4"

(260mm)

18"

(457mm)

Projection of Display
Bezel 5/8" (16mm)

Air Discharge Grille

1" (25mm)
FRONT &
SIDES
3/4" (19mm)
REAR

13"

(330mm)

UNIT

TOP VIEW

A

STD 3 & 5T 11-3/4 (299mm)

Hi Static 3T 8-5/8 (219mm)

Hi Static 5T 11-3/4 (299mm)

Installation (Applicable to all Models)

Liebert® Challenger 3000

™

8

Figure 3 Downflow (BF) cabinet dimensions

Installation (Applicable to all Models)

30-1/2"

(775mm)

76"

(1930mm)

1"

(25.4mm)

32-1/2"

(826mm)

Overall

Dimension

30-1/2"

(775mm)

32-1/2"

(826mm)

Overall

Dimension

30-1/2"

(775mm)

Projection of Display
Bezel 5/8" (16mm)

30-1/2"

(775mm)

Optional 1-5/8" (41mm)
Flange for Duct or
Plenum Connection

1" (25mm) FRONT & SIDES
3/4" (19mm) REAR

Shaded area indicates
a recommended clearance of
34” (864mm) for component

1"

(25.4mm)

access. Right side access
suggested for GLYCOOL units

9"

(229mm)

1" (25.4mm)

Standard Electrical Location

Standard Piping
Location

Floor
Level

FLOOR CUTOUT DIMENSIONS

30-1/2"

(775mm)

See Specification
Sheet for Floor Stand
Height Ordered.

OPTIONAL FLOOR STAND DIMENSIONAL DATA

4"

(102mm)

(25.4mm)

12"

(305mm)

8"

(203mm)

1"

30-1/2"

(775mm)

28-1/2"

(724mm)

30-1/2"

(775mm)

1"

(25.4mm)

30-1/2"

(775mm)

DPN000351
Rev. 1

9Liebert

®

Challenger 3000

™

2.5 Piping Considerations

All piping below the elevated floor must be located so that it offers the least resistance to air flow.
Careful planning of the piping layout under the raised floor is required to prevent the air flow from
being blocked. When installing piping on the subfloor, it is recommended that the pipes be mounted in
a horizontal plane rather than stacked one above the other. Whenever possible, the pipes should be
run parallel to the air flow.

Condensate pumps for downflow units are shipped separately to be field-installed under the raised
floor. Pump height is 11 in. (279mm).

2.5.1 Drain Line

A 3/4" (19.1mm) female pipe thread (FPT) connection is provided for the evaporator coil condensate
drain. This drain line also drains the humidifier, if applicable. The drain line must be located so it will
not be exposed to freezing temperatures. The drain should be at least the full size of the drain
connection and pitched a minimum of 1/8" per ft. (11mm per meter).

NOTICE

Risk of water backing up in the evaporator coil drain line. Can cause the drain pan to
overflow, resulting in building and equipment damage.

Do not install an external trap in the drain line of units without a condensate pump. This line
already has a factory-installed trap inside the cabinet.

Installation (Applicable to all Models)

NOTICE

Risk of drain line damage. Can cause water leaks resulting in furniture, equipment and
building damage.

This line may contain boiling water. Select appropriate drain system materials.
Units with a condensate pump will require a field-supplied trap downstream from the pump.

The drain line must comply with all applicable national, state and local plumbing codes.

Table 2 Piping connection size

Air-Cooled Unit Connection Sizes—in.

Model No. BF/BU

(50 Hz)
042A (040A) 3/8 5/8
067A (065A) 1/2 7/8

Split System Fan Coil Unit Connection Sizes—in.

Model No. BF/BU (50 Hz) Liquid Line

036E (035E) 5/8 - 18 Female (#6 QC) 1-1/8 - 12 Female (#11 QC)
060E (059E) 1/2 OD Cu 1-1/8 OD Cu

All Units: Connection Sizes—in.

Humidifier Line

OD Copper

H

1/4 3/4 FPT 1/2

Water/Glycol-Cooled Unit Connection Sizes—inches

Model No. BF/BU

(50 Hz)

046WG (045WG) 7/8 7/8
071WG (070WG) 1-1/8 1-1/8

GLYCOOL Unit Connection Sizes —in.

Model No. BE/BK

(50 Hz)

061G (058G) 1-1/8 1-1/8

Liquid Line O.D. Copper

L

L

Condensate

Drain Line

C

Supply Line

S

Supply Line

S

Condensate Pump Line

OD Copper

Hot Gas Line OD Copper

HG

Suction Line

SC

Hot Water Reheat

OD Copper

P

Supply

HWS

5/8 5/8

Return Line

R

Return Line

R

Return

HWR

Liebert® Challenger 3000

™

10

Table 2 Piping connection size (continued)

PIPING OUTLET LOCATIONS
(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

Liebert iCOM
Control Panel

Condensate Drain 3/4" FPT
Field-pitch a minimum of 1/8" (3.2mm)
per foot (305mm). The drain line
must comply with all applicable codes.

Humidifier Water Supply Line
1/4" OD CU

Hot Gas Refrigerant Line
5/8" OD CU on Models BF042A/BF040A
7/8" OD CU on Models BF067A/BF065A

Hot Water Return
5/8" OD CU (optional)

Liquid Refrigerant Line
3/8" OD CU on Models BF042A/BF040A
1/2" OD CU on Models BF067A/BF065A

Hot Water Supply
5/8" OD CU (optional)

DPN000353
Rev. 1

Chilled Water Unit Connection Sizes—in.

Model No. BF/BU

(50 Hz)

068C (072C) 1-1/8 1-1/8
102C (101C) 1-1/8 1-1/8

Figure 4 Piping connections for air-cooled units - Downflow models

Supply Line

CWS

Installation (Applicable to all Models)

Return Line

CWR

11 Liebert® Challenger 3000

™

Figure 5 Piping connections for air-cooled units - Upflow models

Condensate Drain
3/4" FPT
Field pitch a min. of 1/8" (3.2mm) per ft. (305mm). Units without
a condensate pump have a factory-supplied trap in the unit, so
do not field-install a trap in the drain line. Units with a condensate pump will
require a field-supplied trap downstream from the pump. The
drain line must comply with all applicable national, state and local plumbing
codes. (If condensate pump is ordered piping is out top of unit).

DPN000352
Rev. 1

Piping outlet locations through the plenum
are the same as the unit. See below for
descriptions and connection sizes.

Humidifier Water Supply Line
1/4" OD CU

Hot Gas Refrigerant Line
5/8" OD CU on Models BU042A/BU040A
7/8" OD CU on Models BU067A/BU065A

Condensate Pump Line
1/2" OD CU
Used only if optional condensate
pump is ordered.

Hot Water Return
5/8" OD CU (optional)

Liquid Refrigerant Line
3/8" OD CU on Models BU042A/BU040A
1/2" OD CU on Models BU067A/BU065A

Hot Water Supply
5/8" OD CU (optional)

Liebert iCOM
Control

PIPING OUTLET LOCATIONS
(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

Installation (Applicable to all Models)

Liebert® Challenger 3000

™

12

Installation (Applicable to all Models)

Figure 6 Piping connections for split system fan coil units - Downflow models

Liebert iCOM
Control

Condensate Drain
3/4" FPT
Field pitch a minimum
of 1/8" (3.2mm) per ft. (305mm).
The drainline must comply
with all applicable codes.

Humidifier Water Supply Line
1/4" OD CU

PIPING OUTLET LOCATIONS
(See Cabinet and Floor
Planning Dimensional Data
for Piping Opening Sizes.)

Liquid Refrigerant Line
#6 Quick Connect on Models BF036E/BF035E
1/2" OD CU on Models BF060E/BF059E

Suction Refrigerant Line
#11 Quick Connect on Models BF036E/BF035E
1-1/8" OD CU on Models BF060E/BF059E

Hot Water Return
5/8" OD CU (optional)

Hot Water Supply
5/8" OD CU (optional)

DPN000376
Rev. 1

13 Liebert® Challenger 3000

™

Installation (Applicable to all Models)

Figure 7 Piping connections for split system fan coil units - Upflow models

Piping outlet locations through the
plenum are the same as the unit.
See below for descriptions and
connection sizes.

Humidifier Water Supply Line
1/4" OD CU

Suction Refrigerant Line
#11 Quick Connect on Models BU036E/BU035E
1 1/8" OD CU on Models BU060E/BU059E

Condensate Pump Line
1/2" OD CU; used only
if optional condensate pump is ordered.

Hot Water Return
5/8" OD CU (optional)

Liquid Refrigerant Line
#6 Quick Connect on Models BU036E/BU035E
1/2" OD CU on Models BU060E/BU059E

Hot Water Supply
5/8" OD CU (optional)

iCOM Control
Panel

Condensate Drain; 3/4" FPT

Field pitch a min. of 1/8" (3.2mm) per ft. (305mm). Units without
a condensate pump have a factory-supplied trap in the unit, so
do not field-install a trap in the drain line. Units with a condensate pump will
require a field-supplied trap downstream from the pump. The
drain line must comply with all applicable national, state and local plumbing
codes. (If condensate pump is ordered piping is out top of unit).

Liebert® Challenger 3000

™

14

PIPING OUTLET LOCATIONS
(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

DPN000375
Rev. 1

Installation (Applicable to all Models)

DPN000364
Rev. 1

Condensate Drain
3/4" FPT
Field pitch a minimum
of 1/8" (3.2mm) per ft. (305mm).
The drain line must comply with
all applicable codes

Humidifier Water Supply Line
1/4" OD CU

Condenser Return Line
7/8" OD CU on Models BF046WG/BF045WG
1-1/8" OD CU on Models BF071WG/BF070WG

Hot Water Return
5/8" OD CU (optional)

Condenser Supply Line
7/8" OD CU on Models BF046WG/BF045WG
1-1/8" OD CU on Models BF071WG/BF070WG

Hot Water Supply
5/8" OD CU (optional)

PIPING OUTLET LOCATIONS
(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

iCOM Control
Panel

Figure 8 Piping connections for water/glycol and GLYCOOL units - Downflow models

15 Liebert® Challenger 3000

™

Installation (Applicable to all Models)

Figure 9 Piping connections for water/glycol and GLYCOOL units - Upflow models

Piping outlet locations through the plenum
the same as the unit. See below for
descriptions and connection sizes.

Humidifier Water Supply Line
1/4" OD CU

Condenser Return Line
7/8" OD CU on Models BU046WG/BU045WG
1-1/8" OD CU on Models BU071WG/BU070WG

Condensate Pump Line
1/2" OD CU
Used only if optional condensate
pump is ordered.

Hot Water Return
5/8" OD CU (optional)

Condenser Supply Line
7/8" OD CU on Models BU046WG/BU045WG
1-1/8" OD CU on Models BU071WG/BU070WG

Hot Water Supply
5/8" OD CU (optional)

Liebert iCOM
Control

PIPING OUTLET LOCATIONS

Condensate Drain
3/4" FPT

Field pitch a min. of 1/8" (3.2mm) per ft. (305mm). Units without

(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

a condensate pump have a factory-supplied trap in the unit, so
do not field-install a trap in the drain line. Units with a condensate pump will
require a field-supplied trap downstream from the pump. The
drain line must comply with all applicable national, state and local plumbing
codes. (If condensate pump is ordered piping is out top of unit).

Liebert® Challenger 3000

™

16

DPN000363
Rev. 1

Installation (Applicable to all Models)

Figure 10 Piping connections for chilled water self-contained units - Downflow models

Liebert iCOM
Control

Condensate Drain
3/4" FPT
Field pitch a minimum
of 1/8" (3.2mm) per ft. (305mm).
The drain line must comply
with all applicable codes.

Humidifier Water Supply Line
1/4" OD CU

PIPING OUTLET LOCATIONS
(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

Chilled Water Supply Line
1-1/8" OD CU

Chilled Water Return Line
1-1/8" OD CU

Hot Water Return
5/8" OD CU (optional)

Hot Water Supply
5/8" OD CU (optional)

DPN000371
Rev. 1

17 Liebert® Challenger 3000

™

Installation (Applicable to all Models)

Figure 11 Piping connections for chilled water self-contained units - Upflow models

Piping outlet locations through
the plenum are the same as the unit.
See below for descriptions and
connection sizes.

Humidifier Water Supply Line
1/4" OD CU

Chilled Water Supply Line
1-1/8" OD CU

Condensate Pump Line
1/2" OD CU; used only if optional
condensate pump is ordered.

Hot Water Return
5/8" OD CU (optional)

Chilled Water Return Line
1-1/8" OD CU

Hot Water Supply
5/8" OD CU (optional)

iCOM Control
Panel

Condensate Drain 3/4" FPT

Field pitch a min. of 1/8" (3.2mm) per ft. (305mm). Units without
a condensate pump have a factory-supplied trap in the unit, so
do not field-install a trap in the drain line. Units with a condensate pump will
require a field-supplied trap downstream from the pump. The
drain line must comply with all applicable national, state and local plumbing
codes. (If condensate pump is ordered piping is out top of unit).

Liebert® Challenger 3000

™

18

PIPING OUTLET LOCATIONS
(See Cabinet and Floor Planning
Dimensional Data for Piping
Opening Sizes.)

DPN000370
Rev. 1

2.5.2 Humidifier Supply Water—Optional Infrared

!

!

• 1/4" supply line; maximum water pressure is 150 psi (1034kPa)

• Size humidifier supply line for 1 gpm (3.8 l/m), with a minimum water pressure of 20 psi (138kPa)

• Do not supply de-ionized water to the humidifier

2.6 Facility Fluid and Piping Maintenance

Facility water and glycol quality remain a requirement throughout the life of the piping system. Fluid
and piping system maintenance schedules must be established and performed. A local fluid
maintenance program must be established that will evaluate fluid chemistry and apply necessary
treatment. A periodic leak inspection of facility and unit fluid piping is recommended. Refer to 5.4 -
Glycol Piping.

2.7 Electrical Connections

Three-phase electrical service is required for all models in either 208, 230, 460, or 575 V, 60 Hz; or
200, 230, or 380/415 V, 50 Hz. Electrical service shall conform to national and local electrical codes.
Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to
electrical schematic when making connections.

A manual electrical disconnect switch should be installed within 5 feet (1.6 m) of the unit in
accordance with codes, or a factory-supplied disconnect switch may be factory mounted within the
unit accessible from the exterior.

Installation (Applicable to all Models)

WARNING

Risk of electric shock. Can cause injury or death.

Potentially lethal voltages exist within this equipment during operation. Observe all cautions
and warnings on unit and in this manual.

The Liebert iCOM
mode. The only way to ensure that there is NO voltage inside the unit is to install and open a
remote disconnect switch and verify the absence of electrical power with a voltmeter. Refer to
unit electrical schematic.

®

microprocessor does not isolate power from the unit, even in the “Unit Off”

WARNING

Risk of loose electrical wiring connections. Can cause overheating of wire, smoke and fire
resulting in building and/or equipment damage, injury or death.

Use copper wire only and verify that all connections are tight.

NOTICE

Risk of improper scroll compressor phase sequencing. Could cause poor performance and
compressor damage.

Three-phase power must be connected to the unit line voltage terminals in the proper
sequence so that the scroll compressor rotates in the proper direction. Rotation in the wrong
direction will result in poor performance and compressor damage. Use a phase sequence and
motor rotation sensor to ensure that the three-phase power is correctly connected and the
compressor is rotating properly.

19 Liebert® Challenger 3000

™

Figure 12 Electrical connections

Installation (Applicable to all Models)

1

Electrical Handy Box *

2

(Factory-Installed With Cover)

14

73

3

4

8

Terminal Block

(for Customer Connectons

1313

94

75 565551

95

76

9

7

6

9

38

10

24

50

12 11 15 16 17

91 929312 343738B37B38C37C9796

5

1

2.7.1 Electrical Field Connections for Liebert Challenger 3000 Models

Source: DPN00354, Rev. 2

1. Electric conduit knockouts on top and bottom of electric box. Knockout size 1-3/4" (44.5mm).

2. Three-phase connection. Electric service connection terminals when factory disconnect is NOT
supplied.

3. Three-phase connection. Electric service connection terminals when factory disconnect switch
is supplied.

4. Factory-installed disconnect switch. (Optional).

5. Three-phase electric service field-supplied.

6. Earth ground connection (50/60Hz). Connection terminal for field-supplied earth grounding
wire.

7. Earth ground bar (50Hz only). Connection terminals with factory ground from each high
voltage component for field-supplied earth grounding wire.

8. Control and monitoring section of electric box.

9. Remote unit shutdown. Replace existing jumper between Terminals 37 + 38 with normally
closed switch having a minimum 75VA, 24VAC rating. Use field-supplied Class 1 wiring. Two
additional contact pairs available as an option (labeled as 37B & 38B, 37C & 38C). Replace
existing jumper for appropriate pair as done for 37 & 38.

10. Special alarm connections. Field-supplied 24V Class 1 wiring for special alarm. Connection
made by adding normally open contacts between terminals 24 + 50. Special alarm connections
may be factory-wired or field-wired. See schematic for factory-wired special alarms. For
field-wired special alarms, use 24V Class 1 wiring to connect normally open contacts between
Terminals 24 & 50, 24 & 51, 24 & 55, or 24 & 56.

11. Remote condensing unit connection. Field-supplied 24V Class 1 wiring to remote condensing
unit Terminals 1, 2, 3, & 4 from (R2) relay (split system only).

12. Smoke detector alarm connections. Field-supplied 24V Class 1 wiring to remote alarm
circuits. Factory-wired contacts from optional smoke detector are #91-comm., #92-NO, and
#93-NC.

13. Common alarm connection. Field-supplied 24V. Class 1 wiring to common alarm
Terminals 75 + 76 (and optional 94 + 95, and 96 + 97), which are factory-connected to common
alarm relay (R3).

72

71

88

84

82

85

83

DPN000354
Rev. 2

70

89

Liebert® Challenger 3000

™

20

Installation (Applicable to all Models)

DPN001733
Rev. 0

23

24

22

21

20

19

25

DPN001734
Rev. 0

22

24

23

20

19

25

Upflow Models with Liebert iCOM Downflow Models with Liebert iCOM

14. Heat rejection connection. Field-supplied 24V Class 1 wiring to interlock heat rejection from
pigtails 70 + 71, which are factory-connected to compressor side switch (self-contained units only)
or to GLYCOOL relay (K11, GLYCOOL units only). On Dual Cool units only, pigtails 72 + 73
connect auxiliary cooling source to GLYCOOL relay K11.

15. Reheat and Humidifier Lockout. Optional emergency power lockout of reheat and/or
humidifier: connections provided for remote 24V AC source.

16. Main Fan Auxiliary Switch. Optional main fan auxiliary side switch. Terminals located in field
wiring compartment for remote indication that the evaporator fan motor/unit is On. Field to
connect 24V maximum.

17. Optional Condensate Alarm (Dual Float Condensate Pump only). Relay terminals located in
field wiring compartment for remote indication.

Refer to specification sheet for full load amp. and wire size amp. ratings.

Figure 13 Electrical field connections for Liebert iCOM

18. Network Cable “C” Connection. Eight-wire Ethernet cable from U2U networking switch.

19. Network Cable “D” connection. Eight-wire Ethernet cable from U2U networking switch.
Cable “D” connection supplied on units with large Liebert iCOM display only.

20. Opening for Field Wiring. Suggested entry point for all field wiring to unit. Hole size Ø2.5"
(63.5mm).

21. Loose Wire Ties. To secure field-supplied network cables. Tighten after all field-supplied wires
have been installed.

22. Vacant Liebert IntelliSlot

®

. May contain optional Liebert IntelliSlot cards.

23. Populated Liebert IntelliSlot. Optional Liebert IntelliSlot cards may be placed in either of the
two supplied Liebert IntelliSlot locations.

24. Remote Temperature / Humidity Sensor Connection. Six-wire CAN cable supplied with
optional remote T/H sensor

®

21 Liebert® Challenger 3000

™

2.8 Balancing the Air Distribution

2.8.1 Under-Floor Discharge Systems

The systems are designed for constant air delivery, therefore any unusual restrictions within the air
circuit must be avoided. For under-floor air distribution, observe the following guidelines:

• Select the air supply grilles and perforated panels for the raised floor to ensure minimum loss of
pressure in the circuit. Air volume dampers on grilles, which extend several inches below the
surface of the raised floor, are usually detrimental to airflow.

• Consideration of the height of the damper on the grille in conjunction with the floor height will
determine whether this type of grille may be used.

• The grilles used in raised floors vary in size, the largest being approximately 18" x 6"
(457 x 152 mm). A larger grille size would be detrimental to the structural capacity of the raised
floor panel. An 18" x 6" (457 x 152mm) heavy duty, pencil-proof type grille typically has 56 square
inches (0.036 m

• Perforated panels are available from various manufacturers of raised floors. These panels are
usually 2' x 2' (610 x 610mm) square and have a nominal free area of approximately 108 to
144 square inches (0.07 to 0.09m
manufacturers have only 36 to 40 square inches (0.023 to 0.026m
times as many panels.

• Avoid floor elevations below 7-1/2" (190.5mm), loosely installed flooring systems, and below-floor
obstructions such as: electrical wiring chases, unusually long electronic system cables, or piping
clusters.

• Always check specifications of the floor supplier before specifying the total number of perforated
panels and grilles required to handle the air flow. The proper specifications for grilles and
perforated panels should indicate the total free area required for air delivery rather than the
number of panels and grilles. (See Table 3 for recommended free area required for each model.)
This table indicates the recommended free area based on having the supply air grilles and
perforated panels sized to handle approximately 75% of the total cubic feet per minute (CFM) of
the units at a velocity of 550 to 600 ft./min. (2.8 - 3.1 m/s). The remaining 25% of the air flow in
the raised floor passes through cable cutouts, cracks between the panels, and other leakage areas.

2

) of free area.

Installation (Applicable to all Models)

2

). Use caution in selecting perforated panels as some

2

) of free area, requiring four

Table 3 Recommended free area ft

550 and 600 fpm (2.8 and 3.1 m/s)

50 Hz Units 60 Hz Units

550

Model

3-ton 2.5 (0.01) 2.3 (0.01) 3-ton 2.5 (0.01) 2.3 (0.01)

5-ton 3.5 (0.02) 3.3 (0.02) 5-ton 3.8 (0.02) 3.5 (0.02)

FPM

2.8.2 Ducted Applications

For ducted supply applications on upflow units, the duct work should be attached to the blower
discharge flanges of the unit. For ducted return air applications, the duct work should be attached to
the filter box flanges on upflow rear return units and on the unit top flange for downflow units. Refer
to Figure 2 for information on upflow units and to Figure 3 for downflow units.

The duct work on upflow units must allow access to the motors/blowers for maintenance. The duct
work on upflow units must be designed within the capacity of the unit, otherwise air flow and
performance will be compromised.

2.8.3 Plenum Installation

A solid plenum or plenum with discharge grille(s) may be installed. The plenum and instructions for
its installation ship separately from the unit.

2.8

m/s

600

FPM

2

(m2) for grilles or perforated panels at output velocities of

3.1

m/s Model

550

FPM

2.8

m/s

600

FPM

3.1

m/s

Liebert® Challenger 3000

™

22

2.9 Checklist for Completed Installation

___ 1. Unpack and check received material.

___ 2. Proper clearance for service access has been maintained around the equipment.

___ 3. Equipment is level and mounting fasteners are tight.

___ 4. Piping completed to refrigerant or coolant loop (if required). Piping has been leak checked,

evacuated and charged (if required).

___ 5. Check piping within the unit & outside of the unit. Remove potential of rub-through or

chaffing.

___ 6. Condensate pump installed (if required).

___ 7. Drain line connected and checked for leaks.

___ 8. Water supply line connected to humidifier and/or water/glycol condenser (if required) and

checked for leaks.

___ 9. Field provided pan with drain installed under all ceiling mounted fluid condensing units (if

installed).

___ 10. Filter box installed (if applicable).

___ 11. Ducting completed (if applicable).

___ 12. Filter(s) installed.

___ 13. Line voltage to power wiring matches equipment serial tag.

___ 14. Power wiring connections completed between disconnect switch, evaporator and condensing

unit, including earth ground.

___ 15. Power line circuit breakers or fuses have proper ratings for equipment installed.

___ 16. Control wiring connections completed to evaporator and condensing unit.

___ 17. Verify water detection is properly installed around all units (if installed).

___ 18. All wiring connections are tight.

___ 19. Control panel DIP switches set based on customer requirements.

___ 20. Foreign materials have been removed from, in and around all equipment installed (literature,

shipping materials, construction materials, tools, etc.).

___ 21. Fans and blowers rotate freely.

___ 22. Inspect all piping connections for leaks during initial operations. Correct as needed.

___ 23. Verify that a blank startup sheet has been sent with the unit(s) and is ready to be completed

by the installer.

___ 24. Rubber band removed from humidifier and/or evaporator pan float switch (if supplied).

Installation (Applicable to all Models)

23 Liebert® Challenger 3000

™

Air-Cooled Models—Self-Contained Compressor

!

!

3.0 AIR-COOLED MODELS—SELF-CONTAINED COMPRESSOR

3.1 Condenser Location

The air-cooled condenser should be located for maximum security and maintenance accessibility.
Avoid ground level sites with public access or areas that contribute to heavy snow or ice
accumulations. Utilize centrifugal condensers whenever interior building locations must by used. To
assure adequate air supply, it is recommended that condensers be located in a clean air area, away
from loose dirt and foreign matter that may clog the coil. In addition, condensers should not be located
in the vicinity of steam, hot air, or fume exhausts. Also, condensers should be located no closer than
three feet (1 meter) from a wall, obstruction, or adjacent unit.

NOTE

If the condenser is located below the level of the room unit, the factory should be consulted.

Install condensers in a level position to assure proper refrigerant flow and oil return. For roof
installation, mount condensers on steel supports in accordance with local codes. To minimize sound
and vibration transmission, mount steel supports across load bearing walls. For ground installation, a
concrete pad will provide adequate support. Condenser legs have mounting holes for securing the
condenser to the steel supports or concrete pad.

3.2 Electrical Connections

Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to
electrical schematic when making connections. Make all wiring and electrical connection in
accordance with local and national codes.

WARNING

Risk of electric shock. Can cause injury or death.

Potentially lethal voltages exist within this equipment during operation. Observe all cautions
and warnings on unit and in this manual.

The Liebert iCOM
Off” mode. The only way to ensure that there is NO voltage inside the unit is to install and
open a remote disconnect switch. Refer to unit electrical schematic.

Use voltmeter to make sure power is turned Off before making any electrical connections.

3.2.1 Line Voltage

Line voltage electrical service is required for all air-cooled condensers at the location of the condenser.
This power supply does not have to be the same voltage as the indoor unit. This separate power source
may be 208, 230, 460, or 575 V, 60 Hz; or 200, 230, or 380/415 V, 50 Hz. The disconnect switch may be
factory-supplied and mounted in the electrical panel or field-supplied and mounted per local and
national codes.

WARNING

Risk of loose electrical wiring connections. Can cause overheating of wire, smoke and fire
resulting in building and/or equipment damage, injury or death.

Use copper wire only and verify that all connections are tight.

3.2.2 Low Voltage

A control interlock between the condenser and the indoor unit is required and is connected between
70 and 71 in the handy box of the indoor unit and the electric panel of the air-cooled condenser. NEC
Class 1 wiring is required.

®

microprocessor does not isolate power from the unit, even in the “Unit

3.2.3 Liebert Lee-Temp™/Flood Back Head Pressure Control Condensers

Liebert Lee-Temp condensers require a separate power supply for the heated receivers. This power
supply is connected to the electrical connection box on the end of the receiver.

Liebert® Challenger 3000

™

24

Figure 14 Air-cooled condensers

Secure each leg to condenser frame at all
points shown using hardware provided.

Liquid line

* B

TYPICAL FOOTPRINT

Liebert Lee-Temp

™

heater

pad connection box

*B - Inverted traps are to be field-supplied and installed
(typ). When installing traps, provide clearance for swing
end of access door. Traps are to extend above base of
coil by a minimum of 7-1/2" (190mm)

Liquid line

Hot gas line

Electric service
supplied by
others

Electric
service
supplied by
others

Hot gas
line

* B

LIEBERT LEE-TEMP CONDENSER

FAN SPEED AND VFD CONDENSER

44"

(1118mm )

18" (457.2mm)

43-9/16"

(1106mm)

51-7/16"

(1306.5mm)

37-7/8"

(962mm)

Common to all models. See Table 4
below for key to “A” dimension.

CONDENSER MOUNTING

1"

(25.4mm)

1-3/4"

(44.5mm)

4-1/4"

(108mm)

4-1/4"

(108mm)

1-3/4"

(44.5mm)

1"

(25.4mm)

1-3/4"

(44.5mm)

1" typ.

(25.4mm)

1-3/4"

(44.5mm)

37-11/16"

(957.3mm)

1-3/4"

(44.5mm)

A

9/16" (14.3mm)
diameter holes
8 places for
1/2" (12.7mm)
diameter bolts

43-3/16"

(1097mm)

SINGLE FAN AIR-COOLED CONDENSERS

1" typ.

(25.4mm)

Air-Cooled Models—Self-Contained Compressor

Table 4 Air-cooled condenser statistics

Model

083 1 7/8 5/8 295 (133.8) 42 (1067)

104 1 1-1/8 5/8 315 (142.8) 42 (1067)

165 2 1-1/8 7/8 425 (193) 82 (2083)

Number

of Fans

Connection Sizes

(OD Copper)

Net Weight

lb (kg)

“A” Dimension

in (mm)Hot Gas (in.) Liquid (in.)

25 Liebert® Challenger 3000

™

3.3 Refrigerant Piping

!

All refrigeration piping should be installed with high temperature brazed joints. Prevailing good
refrigeration practices should be employed for piping supports, leak testing, dehydration and
charging of the refrigeration circuits.

Unit refrigeration components and piping are shipped from the factory with a nitrogen holding
charge.

WARNING

Risk of explosive discharge from high-pressure refrigerant. Can cause injury or death.

This unit contains fluids and gases under high pressure. Relieve pressure before working with
piping.

NOTICE

Risk of improper installation. Can cause equipment and property damage.
The refrigeration piping should be isolated from the building by the use of vibration isolating

supports.
When installing field piping, care must be taken to protect all refrigerant lines from the

atmosphere, especially when using refrigerants with POE oils. Do not allow the piping to
stand open to air for more than 15 minutes. Units designed for R407C have a compressor that
contains POE oil that is very hygroscopic; that is, it quickly absorbs water from the air. The
longer the compressor piping is left open to air, the harder it will be to fully evacuate. If left
open too long, the POE oil may need to be replaced before achieving the required vacuum
level.

Keep the evaporator unit and condenser closed with their factory charge of dry nitrogen while
all field piping is installed. Keep the field piping clean and dry during installation, and do not
allow it to stand open to the atmosphere. When all the field interconnecting piping is in place,
vent the condenser dry nitrogen charge and connect to the field piping. Finally, vent the
evaporator unit dry nitrogen charge and make its piping connections last.

Follow all proper brazing practices including a dry nitrogen purge to maintain system
cleanliness.

Air-Cooled Models—Self-Contained Compressor

NOTE

Piping, including inverted trap(s), must be routed to allow unobstructed access to the panel
per the NEC.

Traps should be installed in the hot gas line on vertical risers at the base and every 25 feet (7.6m) in
elevation. These traps will collect condensed refrigerant and refrigerant oil during the Off cycle of the
unit and ensure flow of refrigerant oil during operation.

A check valve is factory-supplied with the unit to be field-installed on the discharge side of the scroll
compressor. Be sure to install the check valve with the refrigerant flow in the proper direction. When
soldering or brazing the valve, it is very important to protect the internal parts by wrapping the valve
with a damp cloth to keep the valve temperature below 250°F (121°C).

Approval is required whenever:

• a refrigerant piping run exceeds 150 ft. (46 m) equivalent length

• an R407C system condenser must be located below the level of the cooling coil.

Total discharge line pressure drop must not exceed 10 PSIG (69 kPa).

Consult your local Emerson

®

representative when considering installations outside these guidelines.

Liebert® Challenger 3000

™

26

Air-Cooled Models—Self-Contained Compressor

Table 5 Recommended line sizes — OD copper, inches *

3.5-ton 042A (040A) 5-ton 067A (065A)

Equivalent Length

Hot Gas Line Liquid Line Hot Gas Line Liquid Line

50 ft. (15 m) 5/8 1/2 7/8 1/2
100 ft. (30 m) 3/4 1/2 7/8 5/8
150 ft. (45 m) 3/4 5/8 7/8 5/8

*Recommended vertical line sizes must be used for proper oil return at all cooling and dehumidification steps.

Table 6 Equivalent lengths (feet) for various pipe fittings

Copper Pipe

O.D. in.

1/2 0.8 1.3 0.4 2.5 0.26 7.0 4.0

5/8 0.9 1.4 0.5 2.5 0.28 9.5 5.0

3/4 1.0 1.5 0.6 2.5 0.3 12.0 6.5

7/8 1.45 1.8 0.8 3.6 0.36 17.2 9.5

1-1/8 1.85 2.2 1.0 4.6 0.48 22.5 12.0
1-3/8 2.4 2.9 1.3 6.4 0.65 32.0 16.0
1-5/8 2.9 3.5 1.6 7.2 0.72 36.0 19.5

Refrigerant trap = 4 times equivalent length of pipe per this table.

90 Degree

Elbow Copper

90 Degree

Elbow Cast

45 Degree

Elbow Tee

Gate

Valve

Globe
Valve

Angle

Valve

Table 7 Indoor unit refrigerant charge

R407C

Approximate Charge

Model

42A/40A 0.9 (0.4)

67A/65A 1.4 (0.6)

lb (kg)

Table 8 Line charges - refrigerant per 100 ft. (30 m) of Type “L” copper tube

R407C

O.D.

Liquid Line

lb (kg)

Hot Gas Line

lb (kg)

1/2" 7.3 (3.3) 1.3 (0.6)

5/8" 11.7 (5.3) 2.1 (1.0)

3/4" 16.6 (7.5) 3.0 (1.4)

7/8" 24.4 (11.1) 4.4 (2.0)

Table 9 Condenser refrigerant (per serial tag)

R407C

Approximate Charge

lb (kg)

Model

Fan Speed

083 5 (2.3) 26 (11.8)

104 8 (3.6) 37 (16.8)

165 15 (6.8) 50 (22.7)

* Charge includes the receiver charge.

Liebert

Lee-Temp™*

27 Liebert® Challenger 3000

™

3.4 Fan Speed Control Systems

The Variable Fan Speed Control systems (FSC & VFD) uses pressure-activated electronic fan speed
control systems and remotely located thermostat(s) to ensure operation at ambient temperatures as
low as 0°F (-18°C). For this ambient temperature range, the VFD Control Condenser must be used
with digital scroll indoor units and can be used for energy savings with any Liebert Challenger 3000
unit.

Variable Fan Speed Control Piping

A discharge line and a liquid line must be field-installed between the indoor unit and the outdoor
condenser. See Figures 15 and 16 for details.

Variable Fan Speed Control Materials Supplied

•Built-in, pre-wired condenser control box

• Air-Cooled condenser

• Piping access cover to be reinstalled when piping is complete

• Bolts—four per leg (3/8" x 5/8")

• Terminal block for two-wire, 24V interlock connection between unit and condenser

• Condenser legs—four with 1-fan, 2-fan and 3-fan models; six with 4-fan models

Variable Fan Speed Control Leak Check and Evacuation Procedure

Proper leak check and evacuation can be accomplished only with all system solenoid valves open and
check valves accounted for.

Air-Cooled Models—Self-Contained Compressor

™

NOTE

Systems with a scroll or digital scroll compressor include a factory-installed check valve and
an additional downstream Schrader valve with core in the compressor discharge line. Proper
evacuation of the condenser side of the compressor can be accomplished only using the
downstream Schrader valve. See piping schematic (Figures 15 and 16).

1. If unit power is available, open the unit liquid line solenoid valves using the evacuation function
in the diagnostic section of the Liebert iCOM

®

control (refer to the Liebert iCOM user manual,
SL-18835). If unit power is not available, a field-supplied 24VAC / 75VA power source must be
directly connected to each of the unit solenoid valves.

2. For scroll and digital scroll compressors, connect refrigerant gauges to the suction rotalock valves
and discharge line Schrader valves (see Note above) on the compressor.

3. Open the service valves and place a 150 PSIG (1034 kPa) of dry nitrogen with a tracer of
refrigerant. Check system for leaks with a suitable leak detector.

4. After completion of leak testing, release the test pressure (per local code) and pull an initial deep
vacuum on the system with a suitable pump.

5. After four hours, check the pressure readings and, if they have not changed, break vacuum with
dry nitrogen. Pull a second and third vacuum to 250 microns or less. Recheck the pressure after
two hours. After completing this step, proceed to Variable Fan Speed Charging on page 29.

Liebert® Challenger 3000

™

28

Air-Cooled Models—Self-Contained Compressor

Variable Fan Speed Charging

1. Check unit nameplate for refrigerant type to be used. Unit control configurations differ depending
on refrigerant type.

2. Refrigerant charging requires unit operation. Refer to 2.9 - Checklist for Completed
Installation.

3. Calculate the amount of charge for the system. Refer to the unit, condenser and refrigerant line
charge data in Tables 6, 7, 8 and 9.

4. Weigh in as much of the system charge as possible before starting the unit.

NOTICE

Risk of improper refrigerant charging. Can cause equipment damage.
Refrigerant R407C is a blend of three components and must be introduced and charged from

the cylinder only as a liquid.
When adding liquid refrigerant to an operating system, it may be necessary to add the

refrigerant through the compressor suction service valve. Care must be exercised to avoid
damage to the compressor. Emerson recommends connecting a sight glass between the
charging hose and the compressor suction service valve. This will permit adjustment of the
cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the
compressor.

5. Turn On unit disconnect switch. Operate the unit for 30 minutes using the charging function for
the system in the diagnostic section of the Liebert iCOM
SL-18835). The charging function operates the compressor at full capacity and energizes the
blower motor and the liquid line solenoid valve. The reheat and humidifier are disabled. A
minimum 20psig (138kPa) must be established and maintained for the compressor to operate.
The charging function can be reset as many times as required to complete unit charging.

Table 10 Fan speed suction pressure transducer settings

Gauge (Sea Level) Absolute

Function

Pump-Down Cutout 20 (138) 35 (241)

Pump-Down Reset 65 (448) 80 (552)

Minimum to Start-Cooling 35 (241) 50 (344)

Low-Pressure Cutout (DX only) 52 (358) 67 (461)

psiG (kPa) psiA (kPa)

R-407C

®

control (see Liebert iCOM user manual,

6. Charge the unit until the liquid line sight glass becomes clear. Then add one additional pound
(2.2kg) of refrigerant.

NOTE

A digital scroll compressor will have a clear sight glass only when operating at 100% capacity.
When operating below 100%, the sight glass may show bubbles with each 15-second unloading
cycle.

7. As head pressure builds, the variable fan speed controlled condenser fan begins rotating. The fan
will run at full speed when sufficient head pressure is developed—fan starts to rotate at 190 psig
(1310 kPA) and is full speed at 250 psig (1724 kPA).

29 Liebert® Challenger 3000

™

Air-Cooled Models—Self-Contained Compressor

DPN000349
Rev. 5

Condenser
Coil

Schrader
Valve

Schrader
Valve

Optional Field-Installed
Fusible Plug

Evaporator
Coil

Hot Gas
Bypass
Valve

Hot Gas
Bypass

* For rises over
25ft. (7.6m), trap
every 20ft. (6m) or
at evenly spaced
points

Solenoid
Valves

Sight
Glass

Filter
Drier

Liquid Return

Shutoff*
Valve

Sensing
Bulb

External
Equalizers

Scroll
Compressor

Service
Valves

Hot Gas
Discharge

Check
Valve

FIELD PIPING

FACTORY PIPING

SINGLE CIRCUIT SHOWN

* Components are not supplied by Liebert but
are recommended for proper circuit operation
and maintenance.

Expansion
Valve

* Inverted trap on
discharge and liquid lines
to extend above base of
coil by a minimum
of 7-1/2" (190mm)

* Trap at base
of risers longer
than 5ft. (1.5m)

Figure 15 General arrangement—Air-cooled models with fan speed control

Liebert® Challenger 3000

™

30

Air-Cooled Models—Self-Contained Compressor

DPN001726
Rev. 2

Condenser
Coil

Schrader
Valve

Schrader
Valve

Optional Field-Installed
Fusible Plug

Evaporator
Coil

Solenoid
Valve

Sight
Glass

Filter
Drier

Liquid Return

Shutoff*
Valve

External
Equalizers

Sensing
Bulb

Digital
Compressor

Digital
Solenoid Valve

Service
Valves

Hot Gas
Discharge

Check
Valve

FIELD PIPING

FACTORY PIPING

SINGLE CIRCUIT SHOWN

* Components are not supplied by Liebert but
are recommended for proper circuit operation
and maintenance.

Expansion
Valve

* Inverted trap on
discharge and liquid lines
to extend above base of
coil by a minimum
of 7-1/2" (190mm)

* Trap at base
of risers longer
than 5ft. (1.5m)

* For rises over

25ft. (7.6m), trap
every 20ft. (6m) or
at evenly spaced
points

Figure 16 General arrangement—Air-cooled models with digital scroll and fan speed control

31 Liebert® Challenger 3000

™

Air-Cooled Models—Self-Contained Compressor

3.5 Air-Cooled Condenser with Liebert Lee-Temp™ “Flooded Condenser” Head Pressure Control System

The Liebert Lee-Temp system consists of a modulating type head pressure control valve and insulated
receivers with heater pads to ensure operation at ambient temperatures as low as -30°F (-34.4°C).
The Liebert Lee-Temp system can be used with any compressor choice.

Liebert Lee-Temp Piping

A discharge line and a liquid line must be field-installed between the indoor unit and the outdoor
condenser. See Figures 17 and 18 for details.

Liebert Lee-Temp Controlled Materials Supplied

•Built-in, pre-wired condenser control box

• Air-Cooled condenser

• Piping access cover to be reinstalled when piping is complete (models with one to four fans only)

• Bolts—four per leg (3/8" x 5/8")

• Terminal block for two-wire, 24V interlock connection between unit and condenser

• Condenser legs—four with 1-fan, six on two-, three- and six-fan models and eight on four- and
eight-fan models

• Bolts—six per receiver (3/8" x 1")

• Liebert Lee-Temp system:

• Insulated storage receiver

• Head pressure control valve with integral check valve

• Service valve

• Pressure relief valve

• Liquid level sight glass

•Check valve

NOTE

Liebert Lee-Temp heater pads require a separate, continuous electrical source. See nameplate
on unit for proper voltage.

Liebert Lee-Temp Leak Check and Evacuation Procedure

Proper leak check and evacuation can be accomplished only with all system solenoid valves open and
check valves accounted for.

NOTE

Systems with scroll or digital scroll compressors include a factory-installed check valve and an
additional downstream Schrader valve with core in the compressor discharge line. Proper
evacuation of the condenser side of the compressor can be accomplished only using the
downstream Schrader valve. See piping schematic (Figure 18).

1. If unit power is available, open the unit liquid line solenoid valves using the evacuation function
in the diagnostic section of the Liebert iCOM
supplied 24VAC / 75VA power source must be directly connected to each of the unit solenoid
valves.

2. Attach a jumper hose from the service valve fitting on the outlet of the receiver and the Schrader
fitting on the discharge header of the condenser. Front-seat the service valve approximately
two (2) turns.

3. For scroll and digital scroll compressors, connect refrigerant gauges to the suction rotalock valves
and discharge line Schrader valves (see Note above).

4. Open the service valves and place a 150 PSIG (1034 kPa) of dry nitrogen with a tracer of
refrigerant. Check system for leaks with a suitable leak detector.

5. After completion of leak testing, release the test pressure (per local code) and pull an initial deep
vacuum on the system with a suitable pump.

®

control. If unit power is not available, a field-

Liebert® Challenger 3000

™

32

Air-Cooled Models—Self-Contained Compressor

6. After four hours, check the pressure readings and, if they have not changed, break vacuum with
dry nitrogen. Pull a second and third vacuum to 250 microns or less. Recheck the pressure after
two hours.

7. Remove the jumper hose installed previously from between the service valve fitting and the
condenser. After completing this step, proceed to Liebert Lee-Temp

™

Charging.

Liebert Lee-Temp™ Charging

1. Check unit nameplate for refrigerant type to be used. Unit control configurations differ depending
on refrigerant type.

2. Refrigerant charging requires unit operation. Refer to 2.9 - Checklist for Completed
Installation.

3. Calculate the amount of charge for the system. Refer to the unit, condenser and refrigerant line
charge data in Tables 6, 7, 8 and 9.

4. Weigh in as much of the system charge as possible before starting the unit.

NOTICE

Risk of improper refrigerant charging. Can cause equipment damage.
Refrigerant R407C is a blend of three components and must be introduced and charged from

the cylinder only as a liquid.
When adding liquid refrigerant to an operating system, it may be necessary to add the

refrigerant through the compressor suction service valve. Care must be exercised to avoid
damage to the compressor. Emerson recommends connecting a sight glass between the
charging hose and the compressor suction service valve. This will permit adjustment of the
cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the
compressor.

5. Turn on unit disconnect switch. Operate the unit for 30 minutes using the charging function for
the system in the diagnostic section of the Liebert iCOM
the compressor at full capacity and energizes the blower motor and liquid line solenoid valve. The
reheat and humidifier are disabled. A minimum 20psig (138kPa) must established and
maintained for the compressor to operate. The charging function can be reset as many times as
required to complete unit charging.

Table 11 Liebert Lee-Temp suction pressure transducer settings

Gauge Reading

(Sea Level) Absolute

Function

Pump-Down Cutout 20 (138) 35 (241)

Pump-Down Reset 65 (448) 80 (552)

Minimum to Start-Cooling 50 (345) 65 (448)

Low-Pressure Cutout (DX only) 52 (358) 67 (461)

psiG (kPa) psiA (kPa)

R-407C

®

control. The charging function operates

6. Charge the unit until the liquid line sight glass becomes clear. Then add one additional pound
(2.2 kg) of refrigerant.

NOTE

A digital scroll compressor will have a clear sight glass only when operating at 100% capacity.
When operating below 100%, the sight glass may show bubbles with each 15-second unloading
cycle.

33 Liebert® Challenger 3000

™

Air-Cooled Models—Self-Contained Compressor

* Components are not supplied by Liebert
but are recommended for proper
circuit operation and maintenance.
** Components supplied by Liebert
and must be field-installed.

FACTORY PIP ING

FIELD PIPING

**Piping Assembly

Condenser Coil

**Rotalock Valve

1/4" ( 6.4mm)
Pressure Relief
Val ve * *

Sight Glass

Liebert
Lee-Temp
Receiver

Head Pressure
Control with
Integral Check
Val ve

Check
Valve

Evaporator
Coil

Sensing Bulb

Expansion
Val ve

Hot Gas
Bypass
Val ve

Hot Gas
Bypass

Solenoid
Valves

Sight Glass

F

i

l

t

e

r

D

r

i

e

r

Shutoff
Val ve *

Liquid Return

External
Equalizers

Service
Valves

Scroll
Compressor

Liquid Return
from
Condenser

Inverted trap * on
discharge and liquid
lines to extend above base
of coil by a minimum
of 7-1/2" (190mm)

OPTIONAL PIPING

Hot Gas Discharge

Check
Val ve

DPN000674
Rev. 3

* Trap at base
of risers longer
than 5ft. (1.5m)

* For rises over
25ft. (7.6m), trap
every 20ft. (6m) or
at evenly spaced
points (hot gas
line only)

Liebert Lee-Temp Receiver Refrigerant Level

On each receiver at the condenser are two refrigerant-level sight glasses. Refrigerant level will vary
with outside temperature. Check refrigerant level after the unit has been on for at least 15 minutes.

Sight Glass Levels

40°F (4.5°C) and lower—bottom sight glass is 3/4 full
40 to 60°F (4.5 to 15.5°C)—bottom sight glass is full
60°F (15.5°C) and higher—top sight glass is 3/4 full.

Figure 17 General arrangement—Air-cooled models with Liebert Lee-Temp

™

Liebert® Challenger 3000

™

34

Air-Cooled Models—Self-Contained Compressor

Digital
Solenoid Valve

DPN001725
Rev. 1

* Components are not supplied by Liebert
but are recommended for proper
circuit operation and maintenance.
** Components supplied by Liebert
and must be field-installed.

OPTIONAL PIPING

FIELD PIPING

FACTORY PIPING

Piping Assembly **

Condenser Coil

Rotalock Valve **

1/4" ( 6.4mm)
Pressure Relief
Valve * *

Sight Glass

Liebert
Lee-Temp
Receiver

Head Pressure
Control with
Integral Check
Valve

Check Valve

Liquid Return
from Condenser

Evaporator Coil

Sensing Bulb

Expansion Valve

Solenoid Valve

Sight Glass

Filter
Drier

Liquid Return

Shutoff
Valve *

External Equalizer

Service
Valves

Digital
Compressor

Hot Gas Discharge

Check
Valve

Inverted trap * on
discharge and liquid
lines to extend above base
of coil by a minimum
of 7-1/2" (190mm)

* Trap at base
of risers longer
than 5ft. (1.5m)

* For rises over

25ft. (7.6m), trap
every 20ft. (6m) or
at evenly spaced
points (hot gas
line only)

Figure 18 General arrangement—Air-cooled models with digital scroll and Liebert Lee-Temp

™

35 Liebert® Challenger 3000

™

Water-Cooled Models—Self-Contained Compressor

4.0 WATER-COOLED MODELS—SELF-CONTAINED COMPRESSOR

4.1 Piping Considerations

Manual shutoff valves should be installed at the supply and return lines of each unit. This will
provide for routine maintenance or emergency isolation of the unit.

When the water source for the condenser is of poor quality, it is good practice to provide cleanable
filters in the supply line. These filters will trap the particles in the water supply and extend the
service life of the water-cooled condenser.

To provide for the emergency of water leaks and the consequences of sub-floor flooding, floor drains
should be provided with wet traps or a water detection system such as a Liebert Liqui-tect
that is installed near the base of the unit or below the elevated floor.

4.2 Condenser

The condenser is designed to operate in conjunction with either a cooling tower or city water. The
maximum water pressure is 150 psig (1034 kPa). A high pressure system rated at 350 psig (2413 kPa)
is available as an option.

®

sensor

Liebert® Challenger 3000

™

36

Water-Cooled Models—Self-Contained Compressor

Figure 19 General arrangement—Water-cooled models with scroll compressor

Expansion
Valve

Sight
Glass

Hot Gas
Bypass

Filter

Valve

Dryer

Hot Gas
Bypass

Service
Valves

Solenoid
Valve

Hot Gas
Bypass

Evaporator
Coil

Sensing
Bulb

External
Equalizers

Scroll
Compressor

Fluid
Return
From
Unit

Fluid
Supply
To
Unit

Shutoff*
Valves

Hose Bibs*

Bypass
Valve

Field-Supplied
Reducers
Required
on 3-Ton Units

2-Way Water
Regulating
Valve

Fluid
Supply
To
Unit

3-Way Water
Regulating Valve
(optional)

Fluid
Return
From
Unit

Tube
in Tube
Condenser

Tube
in Tube
Condenser

* Components are not supplied
by Liebert but are recommended
for proper circuit operation
and maintenance.

FACTORY PIPING

FIELD PIPING

37 Liebert® Challenger 3000

DPN000359
Rev. 2

™

Water-Cooled Models—Self-Contained Compressor

DPN001727
Rev. 0

Evaporator
Coil

Expansion
Valve

Sensing

Bulb
External
Equalizer

Service
Valves

Sight
Glass

Filter
Dryer

Tube­in-Tube
Condenser

Tube­in-Tube
Condenser

Fluid
Return
From
Unit

Fluid
Supply
To
Unit

Fluid
Return
From Unit

Fluid
Supply
To Unit

Shutoff*
Valves

Hose Bibs*

FACTORY PIPING

FIELD PIPING

Digital
Compressor

Digital
Solenoid
Valve

To Liebert
iCOM Control

To Liebert
iCOM Control

3-Way
Motorized
Ball Valve
(optional)

2-Way
Motorized
Ball Valve

*Components are not supplied
by Liebert but are recommended
for proper circuit operation
and maintenance.

Field-Supplied
Reducers
Required
on 3-Ton Units

Figure 20 General arrangement diagram—Water-cooled models with digital scroll

Liebert® Challenger 3000

™

38

Water-Cooled Models—Self-Contained Compressor

Range
spring

Valve spring
guide

Top
retainer

Range adjustment screw

Insert screwdrivers underneath
the valve spring guide

4.3 Water Regulating Valve

The water regulating valve automatically regulates the amount of fluid necessary to remove the heat
from the refrigeration system, permitting more fluid to flow when load conditions are high and less
fluid to flow when load conditions are low. The valve consists of a brass body, balance spring, valve
seat, valve disc holders, capillary tube to discharge pressure, and adjusting screw.

4.3.1 Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units (Johnson Controls Valve)

Adjustment

The valve may be adjusted with a standard refrigeration service valve wrench or screw driver.

To lower the head pressure setting, turn the square adjusting screw clockwise until the high pressure
gauge indicates the desired setting.

To raise the head pressure setting, turn the adjusting screw counterclockwise until the desired
setting is obtained.

Figure 21 Johnson Controls valve adjustment

39 Liebert® Challenger 3000

™

Water-Cooled Models—Self-Contained Compressor

Adjusting collar nut

4.3.2 High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve)

Adjustment

The valve may be adjusted using a 1/8" diameter rod. Turn the adjusting collar nut counterclockwise
to raise head pressure; turn it clockwise to lower head pressure. Rotation directions are viewed from
top of valve spring housing.

Figure 22 Metrex Valve adjustment

4.4 Motorized Ball Valve—Digital Scroll Compressors

4.4.1 Control

Liebert® Challenger 3000

Table 12 Refrigerant control settings psi (kPa)

Low Pressure

Cut Out

20 (137.9) 65 (448.2) 400 (2758)

Low Pressure

Cut In

High Pressure

Cut Out

Manual Flushing

The valve may be flushed by rotating the socket head screw clockwise. This screw must be in the OUT
position (counterclockwise) for normal valve operation.

On digital scroll units, discharge pressure is controlled by a motorized ball valve. During unloaded
operation, the pressure changes during each digital cycle could cause excessive repositions with a
pressure-operated water regulating valve. The control algorithm for the motorized ball valve uses an
intelligent sampling rate and adjustable pressure thresholds to reduce valve repositions. The valve
assembly consists of the brass valve, linkage and actuator.

The valve actuator operates on 24VAC power and is controlled by a 2-10VDC proportional control
signal. The valve will move from fully open to fully closed in 60 seconds. At 2VDC, the valve is closed;
at 10VDC, the valve is fully open. There is a 20-second delay to position the motorized ball valve
before starting the compressor.

™

40

Control Method

The control utilizes an upper and lower pressure threshold with a 35psi (241kPa) deadband to reduce
valve movement. If the liquid pressure is between the upper and lower threshold, the valve remains
at the current position. If the liquid pressure exceeds the upper threshold the valve opens, and if the
pressure falls below the lower threshold the valve closes. There are multiple adjustment bands to ease
discharge pressure back into control range.

4.4.2 Adjustment

Both pressure thresholds can be shifted simultaneously over a 50psi (345kPa) range (the 35psi
[241kPa] differential remains constant). The ball valve setpoint offset parameter in the Liebert

®

iCOM

Service menu can be adjusted from 0 to 50 PSI (345 kPa) to raise or lower the control band
similar to the pressure adjustment on a water regulating valve. Changing the setpoint offset will
adjust the pressure thresholds for both circuits. Units are factory-set at a 30psi (207 kPa) setpoint
offset (30psi [207 kPa] above minimum). This results in a 220psiA (1517kPa) lower threshold and a
255psiA (1758kPa) upper threshold pressure.

4.4.3 Startup

The setpoint offset is adjusted to the minimum value during startup, then changes to the set value
once the compressor reaches normal operating pressures. Changes in fluid temperature could cause
pressure changes that do not result in valve movement within the deadband. Fan cycling stats should
be set to prevent continuous fluid temperature swings greater than 10

4.4.4 Location

Water-Cooled Models—Self-Contained Compressor

°F (5.6°C).

The motorized ball valve is located in the condenser fluid return line. Three-way valves are piped in a
mixing arrangement with the common port at the valve outlet.

4.4.5 Manual Control

The valve can be manually set by disconnecting AC power, depressing the manual override button on
the valve actuator and adjusting the valve position with the handle. The motorized ball also can be
controlled through the Liebert iCOM’s Service menu using manual mode to override the normal
control.

41 Liebert® Challenger 3000

™

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

!

!

5.0 GLYCOL/GLYCOOL-COOLED MODELS—SELF-CONTAINED COMPRESSOR

5.1 Drycooler Location

The drycooler should be located for maximum security and maintenance accessibility. Avoid ground­level sites with public access or areas which contribute to heavy snow or ice accumulations. To assure
adequate air supply, it is recommended that drycoolers be located in a clean air area, away from loose
dirt and foreign matter that may clog the coil. In addition, drycoolers should not be located in the
vicinity of steam, hot air or fume exhausts. Also, drycoolers should not be located closer than 3 feet
(1 meter) from a wall, obstruction or adjacent unit.

5.2 Drycooler Installation

For roof installation, mount drycoolers on steel supports in accordance with local codes. To minimize
sound and vibration transmission, mount steel supports across load bearing walls. For ground
installation, a concrete pad will provide adequate support. Drycooler legs have mounting holes for
securing the drycooler to steel supports or concrete pad.

5.3 Electrical Connections

Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to
electrical schematic when making connections. Make all wiring and electrical connections in
accordance with local and national codes.

WARNING

Risk of electric shock. Can cause injury or death.

Potentially lethal voltages exist within this equipment during operation. Observe all cautions
and warnings on unit and in this manual.

The Liebert iCOM
Off” mode. The only way to ensure that there is NO voltage inside the unit is to install and
open a remote disconnect switch. Refer to unit electrical schematic.

Use voltmeter to make sure power is turned Off before making any electrical connections.

5.3.1 Line Voltage

Line voltage electrical service is required for all drycoolers at the location of the drycooler. This power
supply does not have to be the same voltage as the indoor unit. This separate power source may be
208, 230, 460, or 575 V, 60 Hz; or 200, 230, or 380/415 V, 50 Hz. The disconnect switch is factory­supplied and mounted in the electric panel.

WARNING

Risk of loose electrical wiring connections. Can cause overheating of wire, smoke and fire
resulting in building and/or equipment damage, injury or death.

Use copper wire only and verify that all connections are tight.

5.3.2 Low Voltage

A control interlock between the drycooler and the indoor unit is required and is connected between 70
and 71 in the handy box of the indoor unit and the pump and drycooler control box of the drycooler.
NEC Class 1 wiring is required.

®

microprocessor does not isolate power from the unit, even in the “Unit

5.3.3 Pump and Drycooler

All wiring to the pump and drycooler from the control box should be done in accordance with the
electrical schematic on the inside lid of the drycooler control box and with local and national codes.

Liebert® Challenger 3000

™

42

5.4 Glycol Piping

These guidelines apply to the field leak checking and fluid requirements for field piping systems.

General Guidelines

• Equipment damage and personal injury can result from improper piping installation, leak
checking, fluid chemistry and fluid maintenance.

• Follow local piping codes, safety codes.

• Qualified personnel must install and inspect system piping.

• Contact a local water consultant regarding water quality, corrosion protection and freeze
protection requirements.

• Install manual shutoff valves at the supply and return line to each indoor unit and drycooler to
permit routine service and emergency isolation of the unit.

NOTICE

Risk of water leakage. Can cause severe property damage and loss of critical data center
equipment.

This unit requires a water drain connection. It may require an external water supply to
operate the humidifier. Improper installation, application and service practices can result in
water leakage from the unit.

Do not locate the Liebert Challenger 3000 directly above any equipment that could sustain
water damage. Emerson recommends installing monitored leak detection equipment for the
unit and supply lines.

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

NOTICE

Risk of frozen fluids. Can cause equipment and building damage.
Freezing system fluids can rupture piping. Complete system drain-down cannot be ensured.

When the field piping or unit may be exposed to freezing temperatures, charge the system
with the proper percentage of glycol and water for the coldest design ambient.

Automotive antifreeze is unacceptable and must NOT be used in any glycol fluid system.

NOTICE

Risk of corrosion. Can cause equipment damage.
Read and follow individual unit installation instructions for precautions regarding fluid

system design, material selection and use of field-provided devices. Liebert systems contain
iron and copper alloys that require appropriate corrosion protection.

Contact a local water consultant regarding water quality, corrosion and freeze protection
requirements.

Water chemistry varies greatly by location, as do the required additives, called inhibitors,
that reduce the corrosive effect of the fluids on the piping systems and components. The
chemistry of the water used must be considered, because water from some sources may
contain corrosive elements that reduce the effectiveness of the inhibited formulation.
Sediment deposits prevent the formation of a protective oxide layer on the inside of the
coolant system components and piping. The water/coolant fluid must be treated and
circulating through the system continuously to prevent the buildup of sediment deposits and
or growth of sulfate reducing bacteria.

Preferably, surface waters that are classified as soft and are low in chloride and sulfate ion
content should be employed. Proper inhibitor maintenance must be performed in order to
prevent corrosion of the system. Consult glycol manufacturer for testing and maintenance of
inhibitors.

Commercial ethylene glycol (Union Carbide Ucartherm, Dow Chemical Dowtherm SR-1 and
Texaco E.G. Heat Transfer Fluid 100), when pure, is generally less corrosive to the common
metals of construction than water itself. It will, however, assume the corrosivity of the water

43 Liebert® Challenger 3000

™

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

from which it is prepared and may become increasingly corrosive with use if not properly
inhibited.

NOTICE

Risk of no-flow condition. Can cause equipment and building damage from corrosion and
resulting leaks.

Do not leave the unit in a no-flow condition. Idle fluid allows the collection of sediment that
prevents the formation of a protective oxide layer on the inside of tubes. Keep unit switched
On and system pump operating.

NOTICE

Risk of debris or precipitate clogging pipes. Can cause equipment damage.
Galvanized pipe must not be used in or with systems or units that contain glycol. The

phosphates in the inhibitor can react with the zinc in the galvanized pipe, precipitating an
insoluble material that can eventually foul the system.

Fluid-cooled condensers have small internal flow passages. To avoid clogging and other
resulting system operation problems, install a 16-20 mesh filter in the fluid supply line to the
indoor unit. The filter should be located where it can be easily serviced or replaced.

Do not install unit on open loop systems. Debris carried by the fluid will clog the brazed plate
condenser.

NOTICE

Risk of improper installation. Can cause equipment or structural damage.
Supply and return lines must be supported in a way that keeps their weight from bearing on

the piping of the unit, drycooler or pumps. Failure to support piping can strain the
equipment’s structural integrity.

A relief valve must be installed in the system to avoid the possibility of burst pipes. This valve
may be obtained from the supplier as an option or obtained from another vendor.

Emerson recommends installing manual service shutoff valves at the supply and return connections
to each unit. This enables routine service and/or emergency isolation of the unit. In addition, multiple
pump packages require a check valve at the discharge of each pump to prevent back flow through the
standby pump(s).

To facilitate filling, installation of hose bibs at the lowest point of the system is recommended.

Consideration of the minimum glycol temperature to be supplied from the drycooler will determine if
the need exists to insulate the glycol supply and return lines. Insulation will prevent condensation on
the glycol lines in low ambient conditions.

All fluid piping must comply with local codes. Care in sizing pipes will help reduce pumping power
and operating costs.

Table 13 Room dew point temperatures

Dry Bulb

°F (°C)

70 (21.1)
70 (21.1)

72 (22.2)
72 (22.2)

75 (23.8)
75 (23.8)

* Minimum glycol temperature before condensation will occur.

Wet Bulb

°F (°C)

57.2 (14.0)

58.5 (14.7)

58.9 (24.9)

60.0 (15.5)

61.2 (16.2)

62.5 (16.9)

Relative

Humidity

45
50

45
50

45
50

Dew Point*

°F (°C)

48.0 (8.9)

50.5 (10.3)

50.0 (10.0)

52.4 (11.3)

52.4 (11.3)

55.0 (12.7)

Liebert® Challenger 3000

™

44

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

5.4.1 Expansion Tanks, Fluid Relief Valves and Other Devices

An expansion tank must be provided for expansion and contraction of the fluid due to temperature
change in this closed system. Vents are required at system high points to vent trapped air when
filling the system. A relief valve is a also a necessary piping component.

Depending on the complexity of the system, various other devices may be specified. Pressure gauges,
flow switches, automatic air separator, tempering valves, standby pumps, sensors for electrical
controls, and flow switches are just a few of these devices.

NOTICE

Risk of frozen fluids. Can cause piping and system components to rupture and leak, resulting
in equipment and building damage.

Immediately following the use of water for leak testing or system cleaning, charge the system
with the proper percentage of glycol and water for your coldest design ambient. Complete
system drain-down cannot be assured.

5.5 Filling Instructions

5.5.1 Preparing the System for Filling

It is important to remove any dirt, oil or metal filings that may contaminate the cooling system piping
in order to prevent contamination of the fresh glycol solution and fouling of the drycooler piping. The
system should be flushed thoroughly using a mild cleaning solution or high-quality water and then
completely drained before charging with glycol. Cleaning new systems is just as important as
cleaning old ones. New systems can be coated with oil or a protective film; dirt and scale are also
common. Any residual contaminants could adversely affect the heat transfer stability and
performance of your system. In many cases, in both old and new systems, special cleaners are needed
to remove scale, rust and hydrocarbon foulants from pipes, manifolds and passages. Clean heat
transfer surfaces are important in maintaining the integrity of the heating/cooling system. For more
information on cleaners and degreasers, contact your sales representative. Follow the manufacturer's
instructions when using these products.

Calculate the internal volume of the system as closely as possible. See Table 14 and Table 16 for
unit volumes. Use volume in Table 15 for glycol piping volumes.

Table 14 Indoor unit glycol volume approximate gallons (liters) max.

Model (50 Hz) Glycol-Cooled GLYCOOL

046WG/(045WG) 1.2 (4.5) —

071WG/(070WG) 2.0 (7.5) —

061G/(058G) — 4.0 (15.1)

Table 15 Volume in standard Type “L” copper piping

Diameter (in.) Volume

Outside Inside Gal/Ft L/M

1/2 0.123 0.008 0.01

5/8 0.555 0.012 0.15

3/4 0.666 0.018 0.22

7/8 0.785 0.025 0.31

1-1/8 1.025 0.043 0.53

45 Liebert® Challenger 3000

™

5.5.2 Glycol Solutions

NOTE

Glycol solutions should be considered for protection of the coil. When it is not used, damage can
occur from either freezing or corrosion from water.

When considering the use of any glycol products in a particular application, you should review the
latest Material Safety Data Sheets and ensure that the use you intend can be accomplished safely.
For Material Safety Data Sheets and other product safety information, contact the supplier nearest
you. Before handling any other products mentioned in the text, you should obtain available product
safety information and take necessary steps to ensure safety of use.

NOTICE

Risk of improper handling of glycol. Can cause environmental damage and violate national,
regional and local laws.

When mishandled, glycol products pose a threat to the environment. Before using any glycol
products, review the latest Material Safety Data Sheets and ensure that you can use the
product safely.

Glycol manufacturers request that the customer read, understand and comply with the
information on the product packaging and in the current Material Safety Data Sheets. Make
this information available to anyone responsible for operation, maintenance and repair of the
drycooler and related equipment.

No chemical should be used as or in a food, drug, medical device, or cosmetic, or in a product or
process in which it may contact a food, drug, medical device, or cosmetic until the user has
determined the suitability and legality of the use. Since government regulations and use conditions
are subject to change, it is the user's responsibility to determine that this information is appropriate
and suitable under current, applicable laws and regulations.

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

NOTICE

Risk of using improper cooling agent. Can cause reduced cooling performance and damage to
equipment and piping.

Proper formulations of inhibited formula ethylene glycol and propylene glycol must be used in
the Liebert Challenger 3000 system. Automotive antifreeze is unacceptable and must NOT be
used.

Typical inhibited formula ethylene glycol and propylene glycol manufacturers and suppliers are
Union Carbide (Ucartherm) or Dow Chemical (Dowtherm SR-1, Dowfrost). These glycols are supplied
with corrosion inhibitors and do not contain a silicone anti-leak formula. Commercial ethylene glycol,
when pure, is generally less corrosive to the common metals of construction than water itself.
Aqueous solutions of these glycols, however, assume the corrosivity of the water from which they are
prepared and may become increasingly corrosive with use if not properly inhibited.

There are two basic types of additives: corrosion inhibitors and environmental stabilizers. The
corrosion inhibitors function by forming a surface barrier that protects the metals from attack.
Environmental stabilizers, while not corrosion inhibitors in the strictest sense of the word, decrease
corrosion by stabilizing or favorably altering the overall environment. An alkaline buffer such as
borax is a simple example of an environmental stabilizer since its prime purpose is to maintain an
alkaline condition (pH above 7).

The percentage of glycol to water must be determined by using the lowest design outdoor temperature
in which the system is operating. Table 16 indicates the solution freeze point at several
concentration levels of ethylene glycol. Propylene glycol concentrations should be 1% higher than the
ethylene glycol table values to find the freeze point. For example, 41% propylene glycol freezes at

-10°F (-23°C).

Table 16 Ethylene glycol concentrations

% Glycol by Volume 0 * 10 20 30 40 50
Freezing Point °F (°C) 32 (0) 25 (-3.9) 16 (-8.9) 5 (-15.0) -10 (-23.3) -32 (-35.5)
Apparent Specific Gravity

@ 50°F (10°C)

* A minimal amount of glycol should be considered for inhibitive coil protection.

1 1.014 1.028 1.042 1.057 1.071

Liebert® Challenger 3000

™

46

NOTICE

Risk of corrosion from water impurities. Can cause equipment damage.
The quality of water used for dilution must be considered because water may contain

corrosive elements which reduce the effectiveness of the inhibited formulation. Water that is
classified as soft (low in chloride and sulfate ion content less than 100 parts per million each)
should be used.

5.5.3 Filling the System

Installation of hose bibs at the lowest point of the system is recommended. When filling a glycol
system keep air to a minimum. Air in glycol turns to foam and is difficult and time-consuming to
remove. (Anti-foam additives are available and may be considered.) Open all operating systems to the
loop. With the top vent(s) open, fill the system from the bottom of the loop. This will allow the glycol to
push the air out of the top of the system, minimizing trapped air. Fill to approximately 80% of
calculated capacity. Fill slowly from this point, checking fluid levels until full.

NOTE

For glycol solution preparation and periodic testing, follow manufacturer's recommendations.
Do not mix products of different manufacturers.

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

47 Liebert® Challenger 3000

™

Figure 23 Drycoolers and pump packages

Notes

1. Single pump packages are 17-1/4"
(438 mm) wide. Dual pump packages are
32-1/4" (819 mm) wide.

2. Mounting holes are 15-1/4" (387mm)
apart on single pump packages and
30-1/4" (768 mm) apart on dual pump
packages.

3. Connection sizes apply to primary pump
supplier.

DRYCOOLER

Provided on

dual pump

package only

30-1/4"

(768mm)

A

B

19"

(483mm)

43-3/16"

(1097mm)

43-9/16"

(1105mm)

37-7/8"

(1095mm)

GLYCOL PUMP PACKAGE

See Note 1

A

B

C

3/4"

(19mm)

37-11/16"

(957mm)

1/2" (12.7mm) diameter
anchor bolts (typ)

B

C

PUMP PACKAGE

MOUNTING ANGLES

TYPICAL

FOOTPRINT

UNIT ANCHOR PLAN

See Table 18 for keys to
dimensions “A”, “B” and “C”.

See Table 17 for keys to
dimensions “A”, “B” and “C”.

1/2" diameter holes
for mounting (4 typ)

Note: Angles located

inside, bottom of pump
package. View used for
mounting reference.

1"

(25.4mm)

1"

(25.4mm)

1-3/4"

(25.4mm)

1-3/4"

(25.4mm)

4-1/4"

(25.4mm)

4-1/4"

(25.4mm)

For expansion tank dimensions,
see Figure 24 on page -49.

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

Liebert® Challenger 3000

™

48

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

1/2" FPT

Fitting

1/2" FPT

Fitting

6-13/16"

(173mm)

17-1/4"

(438.2mm)

30-1/2

(774.7mm)

4"

(101.6mm)

2-3/4"

(69.9mm)

SL-10065 Pg. 7B
SL-10070 Pg. 6B

O 9"

(228.6mm)

O 1/2" (12.7mm) 8 holes

EXPANSION TANK

8.8 gal. (33.3L)

1-1/2"

(38.1mm)

1-1/2" (38.1mm)

1" (25.4mm)

1"

(25.4mm)

6-1/8"

(155.6mm)

7"

(177.8mm)

3"

(76.2mm)

2-1/2"

(63.5mm)

Figure 24 Pump packages—expansion tank

Table 17 Mounting hole dimensional data

A

PUMP PACKAGE

SINGLE (0.75 - 7.5 hp) 15-1/4 (387.4) 2-1/2 (63.5) 22-1/2 (571.5)

DUAL (0.75 - 5 hp) 30-1/4 (768.4) 2-1/2 (63.5) 22-1/2 (571.5)

in (mm)

B

in (mm)

C

in (mm)

Table 18 Drycooler data

Drycooler

Model

No.

-069 1 410 (186) 1-1/4 51-1/2 (1308) 44 (1118) 42 (1067) 2.4 (9.2)

-092 1 430 (195) 1-1/2 51-1/2 (1308) 44 (1118) 42 (1067) 3.7 (13.9)

-109 1 450 (204) 2 51-1/2 (1308) 44 (1118) 42 (1067) 4.9 (18.6)

-112 1 470 (213) 2 51-1/2 (1308) 44 (1118) 42 (1067) 5.8 (22.0)

-139 2 565 (256) 2 91-1/2 (2324) 84 (2134) 82 (2083) 4.8 (18.2)

-197 2 605 (274) 2 91-1/2 (2324) 84 (2134) 82 (2083) 9.0 (34.1)

No. of

Fans

Weight

lb (kg)

Conn. Sizes

(Suct. & Disc.) in.

“A” Dimension

in. (mm)

“B” Dimension

in. (mm)

“C” Dimension

in. (mm)

Table 19 Glycol pump data*

Pump

3/4 60 1-1/4 3/4

1-1/2 60 1-1/4 3/4

260 1-1/4 3/4

360 1-1/2 1

5 60 1-1/2 1-1/4

3/4 50 1-1/4 3/4

150 1-1/4 3/4

1-1/2 50 1-1/4 3/4

250 1-1/4 3/4

3 50 1-1/2 1-1/4

* Connection sizes apply to primary pump supplier

Pump Suction

Connection, in.

Pump Discharge

Connection, in.Hp Hz

49 Liebert® Challenger 3000

Coil Internal

Volume gal. (l)

™

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

A

Figure 25 General arrangement—Glycol-cooled models with scroll compressor

Expansion Tank Field-Installed at
Highest Point in System

Fill*

Drycooler
Electric Box

Unions*

Drycooler

Glycol
Pump

Pump
Housing

Coil

ir Vents*
at Top of
Risers

Expansion
Port*

Hose
Bibs*

Unions*

Pressure
Port*

Fluid
Return
to Pump

Fluid
Supply
from
Pump

Flow Regulating
Valve*

Filter

Sight
Glass

Isolation
Valves*

Expansion
Valve

Hot Gas
Bypass
Valve

Evaporator
Coil

Sensing
Bulb

External
Equalizers

Dryer

Hot Gas
Bypass
Solenoid
Valve

Service
Valves

Scroll
Compressor

Hot Gas
Bypass

Fluid
Return
from
Unit

Fluid
Supply
to Unit

Hose
Bibs*

Isolation
Valves*

Bypass
Valve

2-Way Water
Regulating
Valve

FACTORY PIPING

FIELD PIPING

3-Way Water
Regulating Valve
(optional)

Fluid
Supply
to Unit

Fluid
Return
from
Unit

Tube
in Tube
Condenser

*Components are not
supplied by Liebert but
are recommended for
proper circuit operation
and maintenance

Field-Supplied
Reducers Required
on 3-Ton Units

Tube
in Tube
Condenser

DPN000361
Rev. 2

Liebert® Challenger 3000

™

50

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

Figure 26 General arrangement—Glycol-cooled models with digital scroll

Expansion Tank Field-Installed at
Highest Point in System.

Fill*

Drycooler
Electric
Box

Unions*

Drycooler
Coil

Glycol

Pump

Pump
Housing

Air Vents*
at Top of
Risers

Expansion
Port*

Hose
Bibs*

Fluid
Supply

to Unit
Fluid
Return
from
Unit

Unions*

Pressure
Port*

Isolation
Valves*

Fluid
Return
to Pump

Fluid Supply
from Pump

Flow Regulating
Valve*

Filter
Dryer

Sight
Glass

Isolation
Valv es*

Expansion
Valve

External
Equalizer

Digital
Compressor

Service
Valves

To iCOM Control

Evaporator
Coil

Sensing
Bulb

Digital
Solenoid
Valve

Tube
in Tube
Condenser

Tube
in Tube
Condenser

Hose
Bibs*

2-Way
Motorized
Ball Valve

Hose
Bibs*

FACTORY PIPING

FIELD PIPING

*Components are not supplied by Liebert but
are recommended for proper circuit operation
and maintenance.

To iCOM Control

3-Way
Motorized

Fluid
Supply
to Unit

Fluid
Return
From
Unit

Field-Supplied
Reducers
Required on 3

Ball Valve
(optional)

Ton Units

DPN001722
Rev. 0

51 Liebert® Challenger 3000

™

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

Field-Supplied
Reducers
Required on 3-Ton Units

Pump
Housing

Pump

Unions*

Unions*

Isolation
Valves*

Expansion
Valve

Evaporator
Coil

Drycooler
Coil

Drycooler
Electric Box

Pressure
Port*

Pressure
Port*

Hose
Bib*

Fill*

Fluid
Return to
Pump

Fluid
Supply
from Pump

Air Vents*
at Top of
Risers

Flow Regulating
Valve*

Sight
Glass

Sensing
Bulb

External
Equalizers

Hot Gas
Bypass
Valve

Scroll
Compressor

Service
Valves

Filter
Dryer

Hot Gas
Bypass

Econ-O-Coil

3-Way Water
Regulating
Valve

3-Way Chilled
Glycol Valve

Valve
Actuator

Econ-O-Cycle
Comparator

Econ-O-Coil
Circuit

Tube
in Tube
Condenser

Fluid
Supply to
Unit

Fluid
Return
from
Unit

Isolation
Valves*

Hose
Bibs*

FACTORY PIPING

FIELD PIPING

*Components are not supplied
by Liebert but are recommended
for proper circuit operation
and maintenance.

Expansion Tank Field-Installed at
Highest Point in System

DPN000379
Rev. 3

Glycol

Figure 27 General arrangement—GLYCOOL models with scroll compressor

Liebert® Challenger 3000

™

52

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

A

Figure 28 General arrangement—GLYCOOL models with digital scroll compressor

Expansion Tank Field-Installed at
Highest Point in System

Fill*

Pressure
Port*

ir Vents*
at Top of
Risers

Hose
Bib*

Pressure
Port*

Drycooler
Electric
Box

Unions*

Drycooler
Coil

Fluid
Return to
Pump

Fluid
Supply
from
Pump

Flow Regulating Valve*

Unions*

Isolation
Valves*

Sight

Glycol

Pump

Expansion
Valve

Pump
Housing

External
Equalizer

Evaporator
Coil

Sensing
Bulb

Glass

Filter
Dryer

Service
Valves

Digital

Digital
Solenoid
Valve

Compressor

Fluid
Return
from
Unit

Hose
Bibs*

Fluid
Supply to
Unit

Isolation
Valves*

Econ-O-Cycle
Comparator

Field-Supplied
Reducers
Required on 3-Ton Units

Valve
Actuator

3-Way Chilled
Glycol Valve

Econ-O-Coil
Circuit

Tube­in-Tube
Condenser

r

To Liebert
iCOM Control

3-Way Motorized
Ball Valve

*Components are not supplied by Liebert but
are recommended for proper circuit operation
and maintenance.

FACTORY PIPING

DPN001724

FIELD PIPING

Rev. 0

Econ-O-Coil

53 Liebert® Challenger 3000

™

Glycol/GLYCOOL-Cooled Models—Self-Contained Compressor

5.5.4 Motor Ball Valve—Digital Scroll Compressors

Refer to 4.4 - Motorized Ball Valve—Digital Scroll Compressors for details on the motorized ball
valve.

5.6 Condenser

The condenser is designed to operate in conjunction with a drycooler. The maximum coolant pressure
is 350 psig (2413 kPa).

5.7 Glycol Regulating Valve

The glycol regulating valve automatically regulates the amount of coolant necessary to remove the
heat from the refrigeration system, permitting more fluid to flow when load conditions are high and
less fluid to flow when load conditions are low. The valve consists of a brass body, balance spring,
valve seat, valve disc holders, capillary tube to discharge pressure, and adjusting screw.

5.7.1 Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413kPa) System for 5-Ton Units (Johnson Controls Valve)

For details, refer to 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton Units
(Johnson Controls Valve) High Pressure Valve - 350psig (2413 kPa) System for 5-Ton Units
(Johnson Controls Valve).

5.7.2 High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve)

For details, refer to 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units
(Metrex Valve).

5.7.3 Testing Valve Function

When the refrigeration system has been Off for approximately 10-15 minutes, the coolant flow should
stop.

Should the coolant continue to flow, the valve is either improperly adjusted (head pressure is too low)
or the pressure sensing capillary is not connected properly to the condenser.

Table 20 Refrigerant control settings psi (kPa)

Low Pressure

Cut Out

20 (137.9) 65 (448.2) 400 (2758)

Low Pressure

Cut In

High Pressure

Cut Out

Liebert® Challenger 3000

™

54

6.0 CHILLED WATER MODELS

A

B

AB

FACTORY PIPING

SL-11899
Pg. 5

Air

Flow

Air

Flow

Chilled
Water
Coil

Chilled

Water

Coil

Bleed

Val ve

Bleed
Val ve

Val ve

Actuator

Val ve

Actuator

Val ve

2-Way

Chilled

Water

Val ve

Flow

Switch

(optional)

Chilled

Water

Supply

Chilled

Water

Supply

Chilled

Water

Return

Chilled

Water

Return

Hose
Bibs *

Hose
Bibs *

Shutoff

Val v e s *

Shutoff
Val v e s *

3-WAY VALVE

2-WAY VALVE

*Components are not supplied by Liebert but
are recommended for proper circuit operation
and maintenance.

FIELD PIPING

3-Way

Chilled

Water

6.1 Piping Considerations

Manual shutoff valves should be installed at the supply and return lines to each unit. This will
provide for routine service and emergency isolation of the unit.

Consideration of the minimum water temperature to be supplied from the chiller will determine if the
need exists to insulate supply and return lines. Insulation will prevent condensation on the supply
and return lines.

Chilled Water Models

To provide for the emergency of water leaks and the consequences of sub-floor flooding, floor drains
should be provided with wet traps or a water detection system, such as a Liebert Liqui-tect
installed near the base of the unit or below the elevated floor.

Figure 29 Chilled water general arrangement - Upflow (BU)

®

, that is

55 Liebert® Challenger 3000

™

Figure 30 Chilled water general arrangement - Downflow (BF) models

SL-11899
Pg. 6

A

B

Flow
Switch
(optional)

Chilled
Water
Return

Chilled
Water
Supply

Chilled
Water
Return

Chilled
Water
Coil

Chilled
Water
Coil

2-Way Chilled
Water Valve

Chilled
Water
Supply

Shutoff
Valves *

Hose
Bibs *

3-WAY VALVE

2-WAY VALVE

3-Way
Chilled
Water
Valve

Air
Flow

Air
Flow

Valve
Actuator

Valve
Actuator
AB

Bleed
Valve

Bleed
Valve

Hose
Bibs *

Shutoff
Valves *

*Components are not supplied by Liebert,
but are recommended for proper circuit
operation and maintenance.

FACTORY PIPING
FIELD PIPING

Chilled Water Models

Liebert® Challenger 3000

™

56

7.0 SPLIT SYSTEM MODELS

!

!

Three condensing unit styles are available: two air-cooled and one water/glycol-cooled condensing
unit.

7.1 Location Considerations

7.1.1 Air-Cooled Condensing Units

To assure an adequate air supply, it is recommended that all condensing units be located in a clean
air area, away from loose dirt and foreign matter that may clog the coil.

The outdoor condensing unit must not be located in the vicinity of steam, hot air, or fume exhausts or
closer than 18" from a wall, obstruction, or adjacent unit.

The outdoor condensing unit should be located for maximum security and maintenance accessibility.
Avoid ground-level sites with public access or areas that will contribute to heavy snow accumulations.
Do not allow the discharge air to blow into another condensing unit.

The outdoor condensing unit must be located at the same level or above the indoor Liebert Challenger
3000 unit. It must NOT be located below the indoor unit.

A solid base, capable of supporting the weight of the condenser and at least 2" (51mm) higher than the
surrounding grade and at least 2" (51mm) larger than the condensing unit base dimensions, should be
installed at the pre-determined location. In snow areas, a base of sufficient height to clear snow
accumulation must be installed.

Split System Models

The centrifugal fan air-cooled condensing unit may be located above the dropped ceiling or any remote
indoor area. If noise is of concern, the condensing unit should be located away from personnel. Normal
operating sound may be objectionable if the condensing unit is placed near quiet work areas.

To mount the unit in the ceiling, refer to 7.5.1 - Installing the Indoor Condensing Unit for
hanging guidelines and to Figure 35 - Detail of ceiling hanging bracket for dimensional data.

7.1.2 Water/Glycol-Cooled Condensing Units

The condensing unit may be located above the dropped ceiling or any remote indoor area. If noise is of
concern, the condensing unit should be located away from personnel. Normal operating sound may be
objectionable if the condensing unit is placed near quiet work areas. To mount the unit the in ceiling,
refer to 7.5.1 - Installing the Indoor Condensing Unit.

7.2 Electrical Connections

Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to
electrical schematic when making connections. Make all wiring and electrical connections in
accordance with local and national codes.

WARNING

Risk of electric shock. Can cause injury or death.

Potentially lethal voltages exist within this equipment during operation. Observe all
cautions and warnings on unit and in this manual.

The Liebert iCOM
Off” mode. The only way to ensure that there is NO voltage inside the unit is to install and
open a remote disconnect switch. Refer to unit electrical schematic.

®

microprocessor does not isolate power from the unit, even in the “Unit

Use voltmeter to make sure power is turned Off before making any electrical connections.

WARNING

Risk of loose electrical wiring connections. Can cause overheating of wire, smoke and fire
resulting in building and/or equipment damage, injury or death.

Use copper wire only and verify that all connections are tight.

57 Liebert® Challenger 3000

™

7.2.1 Line Voltage

!

Line voltage electrical service is required for all condensing units at the location of the condensing
unit. This power supply does not have to be the same voltage as the indoor unit. This separate power
source may be 208, 230, 460 or 575V, 60 Hz; or 200, 230, or 380/415 V, 50 Hz. A disconnect switch is
required and must be mounted per local and national codes to isolate the unit for maintenance.

7.2.2 Low Voltage

The control cable between the condensing unit and the evaporator unit is connected between
terminals 1,2 and 3 on the terminal strip in the evaporator unit and the condensing unit control box.
A fourth wire is required on systems with hot gas bypass. NEC Class 1 wiring is required. Glycol­cooled units also require a two-wire control connection to the drycooler and pump package.

7.3 Piping Considerations

7.3.1 Refrigerant Loop

WARNING

Risk of explosive discharge from high-pressure refrigerant. Can cause injury or death.

This unit contains fluids and gases under high pressure. Relieve pressure before working with
piping.

NOTICE

Split System Models

Risk of improper refrigerant charge. Can cause equipment damage, environmental
degradation and violation of national, state and local law.

Follow all applicable codes for handling refrigerant.
R22 and R407C are similar in properties—proper safety equipment and proper refrigeration

tools are required on both types. Check unit nameplate for correct refrigerant type before
topping off or recharging a system.

R407C refrigerant must be introduced and charged from the cylinder only as a liquid.

NOTICE

Risk of improper piping installation. Can cause contamination of hygroscopic oil with water.
When installing field piping, care must be taken to protect all refrigerant lines from the

atmosphere, especially when using refrigerants, such as R407C which requires use of polyol
ester oils. Do not allow the piping to stand open to air for more than 15 minutes. Units
designed for R407C have a compressor that contains polyol ester oil, which is very
hygroscopic; that is, it quickly absorbs water from the air. The longer the compressor piping is
left open to air, the harder it will be to fully evacuate. If left open too long, the polyol ester oil
may need to be replaced before achieving the required vacuum level.

NOTE

Complete all piping and evacuate lines before connecting quick connects when using an
optional sweat adapter kit and field installed hard piping.

Follow all proper brazing practices including a dry nitrogen purge to maintain system
cleanliness.

Liebert® Challenger 3000

™

58

Split System Models

All split systems require two refrigerant lines (an insulated copper suction line and a copper liquid
line) between the evaporator and the condensing unit.

Two possible methods exist for installing the copper suction and liquid lines.

1. Using an optional Sweat Adapter Kit and hard piping between the two units.

2. Using optional pre-charged line sets (for 3-ton models only).

All refrigeration piping should be installed with high temperature brazed joints. Prevailing good
refrigeration practices should be employed for piping supports, leak testing, evacuation, dehydration,
and charging of the refrigeration circuits. The refrigeration piping should be isolated from the
building by the use of vibration isolating supports.

It is important to handle the pre-charged lines for 3-ton units with care so they will not get kinked or
damaged. Use tube benders and make all bends before making connections to either end. Coil any
excess tubing in a horizontal plane with the slope of the tubing toward the condensing unit.

To prevent tube damage when sealing openings in walls and to reduce vibration transmission, use a
soft flexible material to pack around the tubes.

When installing remote condensing units mounted above the evaporator, the suction gas line should
be trapped at the evaporator. This trap will retain refrigerant oil in the Off cycle. When the unit
starts, oil in the trap is carried up the vertical riser and returns to the compressor.

Refrigerant charge requirements: Total refrigerant charge will be required only if units are evacuated
during installation or maintenance. Total refrigerant charge = evaporator + lines + condensing unit.

NOTE

All condensing units and 3-ton evaporator units are fully charged with refrigerant. All 5 ton
evaporator units include a nitrogen holding charge only. See Table 21 for field charge
required. If field-supplied refrigerant piping is installed, refrigerant must be added to the
system.

Once all piping is complete, check for leaks and dehydrate the field piping as follows:

1. Pressurize the field piping to 150 PSIG (1034 kPa) using dry nitrogen with a trace of refrigerant.

Check system for leaks with a suitable leak detector.

2. After completion of leak testing, release the test pressure (per local code) and pull a deep vacuum

on the field piping with a suitable pump.

3. After 15 minutes, check the pressure readings and, if they have not changed, break vacuum with

dry nitrogen. Pull a second vacuum to 250 microns or less. Recheck the pressure after 15 minutes.

Table 21 Unit refrigerant charge

R407C Charge

Model

BF/BU 036E 0.5 (0.2) PF_042A-_H 25.8 (11.7)

BF/BU 035E 0.5 (0.2) PF_041A-_H 25.8 (11.7)

BF/BU 060E 0.8 (0.4) PF_067A-_L 25.8 (11.7)

BF/BU 059E 0.8 (0.4) PF_066A-_L 25.8 (11.7)

MC_40/39A 12.9 (5.8) PF_Z67A-_L 50.1 (22.7)

MC_65/64A 26.1 (11.8) PF_Z66A-_L 50.1 (22.7)

PF_042A-_L 12.9 (5.8) PF_067A-_H 50.1 (22.7)

PF_041A-_L 12.9 (5.8) PF_066A-_H 50.1 (22.7)

PF_Z42A-_L 25.8 (11.7) MC_44/43W 3.4 (1.5)

PF_Z41A-_L 25.8 (11.7) MC_69/68W 5.9 (2.7)

lb (kg) lb (kg)

Model

R407C Charge

59 Liebert® Challenger 3000

™

Table 22 Line charges - refrigerant per 100 ft. (30 m) of Type “L” copper tube

Evaporator

Condensing unit

Suction Line Piping
Condensing unit
above evaporator
Traps recommended at the base of riser and
every 25 feet (7.6m) of vertical rise.

R407C

O.D.

1/2" 7.3 (3.3) -

5/8" 11.7 (5.3) 0.4 (0.2)

7/8" 24.4 (11.1) 1.0 (0.4)

1-1/8" 41.6 (18.9) 1.7 (0.7)

1-3/8" 63.3 (28.7) 2.7 (1.1)

Liquid Line

lb (kg)

Suction Line

lb (kg)

Table 23 Recommended refrigerant lines (R407C) sizes OD copper

3.5-Ton

036E (035E)

Equivalent Feet (m)

0-50 (0-15) 7/8" 1/2" 1-1/8" 1/2"

51-100 (16-30) 1-1/8" 1/2" 1-1/8" 5/8"

101-150 (31-45) 1-1/8" 5/8" 1-3/8" 5/8"

Suction Liquid Suction Liquid

5-Ton

060E (059E)

Table 24 Line coupling sizes

Model
(Tons)

33/8 #610-12
5 1/2 & 5/8 #10 35-45
3 7/8 #11 35-45
5 1-1/8 #12 50-65

Line Size

OD Cu, in.

Coupling

Size

Torque

lb-ft.

Table 25 Equivalent lengths (feet) for various pipe fittings

Copper Pipe

OD in.

1/2 0.8 1.3 0.4 2.5 0.26 7.0 4.0
5/8 0.9 1.4 0.5 2.5 0.28 9.5 5.0
3/4 1.0 1.5 0.6 2.5 0.3 12.0 6.5

7/8 1.45 1.8 0.8 3.6 0.36 17.2 9.5
1-1/8 1.85 2.2 1.0 4.6 0.48 22.5 12.0
1-3/8 2.4 2.9 1.3 6.4 0.65 32.0 16.0
1-5/8 2.9 3.5 1.6 7.2 0.72 36.0 19.5

Refrigerant trap = 4 times equivalent length of pipe per this table

90 Degree

Elbow Copper

90 Degree

Elbow Cast

45 Degree

Elbow Tee

Gate

Valve

Globe
Valve

Split System Models

Angle

Valve

Figure 31 Refrigerant piping diagram

Liebert® Challenger 3000

™

60

7.3.2 Quick Connect Fittings

NOTE

When hard piping is used, complete all piping and evacuate lines before connecting quick
connects.

Be especially careful when connecting the quick connect fittings. Read through the following steps
before making the connections.

1. Remove protector caps and plugs.

2. Carefully wipe coupling seats and threaded surfaces with a clean cloth.

3. Lubricate the male diaphragm and synthetic rubber seal with refrigerant oil.

4. Thread the coupling halves together by hand to ensure that the threads mate properly.

5. Tighten the coupling body hex nut and union nut with the proper sized wrench until the coupling
bodies “bottom out” or until a definite resistance is felt.

6. Using a marker or pen, make a line lengthwise from the coupling union nut to the bulkhead.

7. Tighten the nuts an additional quarter turn; the misalignment of the lines shows how much the
coupling has been tightened. This final quarter turn is necessary to ensure that the joint will not
leak. Refer to Table 24 for torque requirements.

8. Add charge for the additional piping (refer to Table 22).

Split System Models

61 Liebert® Challenger 3000

™

7.4 Outdoor Air-Cooled Condensing Units

A

B

C

Shaded area indicates

a minimum clearance

of 18" (457mm) for

proper air flow

Shaded area indicates

a minimum clearance

of 18" (457mm) for

proper air flow

Removable (Front) Panel

for access to high-voltage and

low-voltage connections and

refrigeration components

Shaded area indicates

a minimum clearance

of 24" (610mm) for component

access and removal

Removable (Right) Panel
for access to refrigeration
components

Right Air

Discharge

Left Air

Intake

Fan Rotation

CCW (left side)

SL-11081
Pg. 4

C

C

Liquid Line
Quick Connect
(Male Coupling)

Suction Line
Quick Connect
(Male Coupling)
Except as noted

Electrical Entrance
for High-Voltage
Connection

Electrical Entrance
for Low-Voltage
Connection

SL-11081
Pg. 6

B

C

A

F

G

D

E

UNIT DIMENSIONS
(See Table 26)

Figure 32 Outdoor air-cooled condensing unit—horizontal air discharge models

Split System Models

Liebert® Challenger 3000

™

62

Table 26 Horizontal air discharge cabinet and floor planning dimensional data

Model Numbers Dimensional Data in. (mm) Module

Weight

lb (kg) net60 Hz 50 Hz A B C

PFC042A-_L PFC041A-_L

PFH042A-_L —

PFC042A-_H PFC041A-_H

PFH042A-_H —

PFCZ42A-_L PFCZ41A-_L

PFC067A-_L PFC066A-_L

PFH067A-_L —

48 (1219) 31 (787) 18 (457) 241 (109)

53 (1343) 36-1/4 (918) 18 (457) 351 (159)

Table 27 Horizontal air discharge piping and electrical connection data

Model Numbers Dimensional Data in. (mm) Piping Connections in. (mm)

60 Hz 50 Hz A B C D E F G

PFC042A-_L PFC041A-_L

PFH042A-_L —

PFC042A-_H PFC041A-_H

PFH042A-_H PFCZ41A-_L

PFCZ42A-_L —

PFC067A-_L PFC066A-_L

PFH067A-_L —

2 (51) 5-3/4 (146) 8-1/2 (216) 4-3/4 (121) 6-3/4 (171) — 8-1/2 (216)

2 (51) 6 (152) 8-1/2 (216) 4-3/4 (121) 7-3/4 (197) — 8-1/2 (216)

Split System Models

63 Liebert® Challenger 3000

™

Figure 33 Outdoor air-cooled condensing unit—top air discharge models

C

A

2"

(51mm)

B

D

36-1/8"

(918mm)

25-3/32"

(637mm)

46-7/32"

(1174mm)

4-23/32"

(120mm)

53-3/16"

(1351mm)

4" (typ.)

(102mm)

2" (typ.)
(51mm)

2"

(51mm)

32-1/8"

(816mm)



FOOTPRINT

DIMENSIONS

1/2" (13mm)
Bolt-Down Holes
6 places

Shaded area indicates

a minimum clearance

of 18" (457mm) for

proper air flow

Shaded area indicates

a minimum clearance

of 18" (457mm) for

proper air flow

Removable (Front) Panel

for access to high-voltage and

low-voltage connections and

refrigeration components

Shaded area indicates

a minimum clearance

of 24" (610mm) for component

access and removal

Right Air

Discharge

Top Air

Discharge

Left Air

Intake

Guard Height

SL-11081
Pg. 5

F

G

B

C

A

D

E

Suction Line
Quick Connect
(Male Coupling)

Liquid Line
Quick Connect
(Male Coupling)

Electrical Entrance
for High-Voltage Connection

Electrical Entrance
for Low-Voltage
Connection

SL-11081
Pg. 7

UNIT DIMENSIONS
(see Table 28)

PIPING & ELECTRICAL
CONNECTIONS
(see Table 29)

Split System Models

Liebert® Challenger 3000

™

64

Split System Models

Table 28 Cabinet and floor planning dimensional data - prop fan condensing modules, top air discharge

Model Numbers Dimensional Data in. (mm) Module

Weight

lb (kg) net60 Hz 50 Hz A B C D

PFC067A-_H PFC066A-_H

53 (1343) 36-1/4 (918) 38-1/2 (978) 5-1/2 (140) 488 (222)PFH067A-_H —

PFCZ67A-_L PFCZ66A-_L

Table 29 Piping and electrical connections - top air discharge

Model Numbers Dimensional Data in. (mm) Piping Connections in. (mm)

60 Hz 50 Hz A B C D E F

PFC067A-_H PFC066A-_H

2 (51) 6 (152) 8-1/2 (216) 4-3/4 (121) 7-3/4 (197) 8-1/2 (216)PFH067A-_H —

PFCZ67A-_L PFCZ66A-_L

65 Liebert® Challenger 3000

™

Figure 34 Electrical field connections, prop fan condensing module

NOTE: Refer to specification sheet for full load amp
and wire size amp ratings

SL-11081 Pg. 8

Factory-wired
to components on
electric panel.

Heat rejection connection. Field
supplied 24V NEC class 2 wiring.
Wire connections from evaporator module:

1. 24V GND

2. 24V Supply

3. High Pressure Alarm

4. Hot Gas Bypass Connection
(only on units with hot gas bypass.
If no hot gas bypass, connection is
provided in the evaporator module.
Connect wire 4 with wire 2 to the
24V supply).

Electric service
connection to contactor
or terminal block

Single- or 3-phase
electric service; not
by Liebert

High-voltage electric
power supply entrance

Low-voltage electric
power supply entrance

Earth ground connection
terminal for field wiring.

SL-11081
Pg. 8A

TOP AIR

DISCHARGE MODELS

(5-Ton High Ambient

& 5-Ton Quiet-Line)

HORIZONTAL AIR DISCHARGE MODELS

Single- or
3-phase
electric
service; not
by Liebert

Field-supplied 24V NEC

Class 2 wiring to

evaporator module

Single- or
3-phase electric
service; not by
Liebert

Field-supplied unit
disconnect switch

Field-supplied 24V
NEC Class 2 wiring
to evaporator
module

Split System Models

Liebert® Challenger 3000

™

66

7.5 Centrifugal Air-Cooled Condensing Units

!

7.5.1 Installing the Indoor Condensing Unit

Refer to drawings for unit dimensions and component locations.

WARNING

Risk of ceiling collapse and heavy unit falling. Can cause equipment and building damage,
serious injury or death.

Verify that the supporting roof structure is capable of supporting the weight of the unit(s) and
the accessories during installation and service. (See Table 30 - Indoor centrifugal
condensing unit.)

Be sure to securely anchor the top ends of the suspension rods. Make sure all nuts are tight.

The indoor condensing unit is usually mounted above the ceiling and must be securely mounted to the
roof structure. The ceiling and ceiling supports of existing buildings may require reinforcements. Be
sure to follow all applicable national, state and local building, plumbing and electrical codes. Use
field-supplied threaded suspension rods and 3/8"-16 factory hardware kit.

The indoor condensing unit must be located at the same level or above the Liebert Challenger 3000
unit. It must NOT be located below the Liebert Challenger 3000.

Recommended clearance between ceiling grids and building structural members is unit height plus
3 inches (76.2mm).

Split System Models

Install the four field-supplied rods by suspending them from suitable building structural members.
Locate the rods so that they will align with the four mounting holes in the flanges that are part of the
unit base.

Using a suitable lifting device, raise the unit up and pass the threaded rods through the four
mounting holes in the flanges that are part of the unit base.

Attach the threaded rods to the unit flanges using the supplied nuts and grommets. (See Figure 35 -
Detail of ceiling hanging bracket, Threaded Rod and Hardware Kit Installation). The rubber
grommets provide vibration isolation.

1. Use the plain nuts to hold unit in place. Adjust these nuts so that the weight of the unit is
supported evenly by the four rods, does not rest on the ceiling grid, and is level.

NOTE

The units must be level in order to operate properly.

2. Use the Nylock nuts to “jam” the plain nuts.

Table 30 Indoor centrifugal condensing unit

Model

MC_40A MC_39A 240 (109)

MC_65A MC_64A 449 (204)

Net Weight

lb (kg)60 Hz 50 Hz

67 Liebert® Challenger 3000

™

Figure 35 Detail of ceiling hanging bracket

3/8" threaded rod
(field-supplied)

3/8" hex nut

3/8" washer

Sleeve

Isolator

3/8" fender washer

3/8" hex nut

3/8" hex nut
Nylock

Unit base pan (ref)

7.5.2 Ducting

The total external static pressure for the inlet and outlet ducts, including grille, must not exceed

0.5 inches of H

dimensions.

O. Hood intake dimensions should be the same as the condensing unit duct

2

Split System Models

If the condensing unit is located close to the outside of the building, rain hoods must be installed. In
addition, install a triple layer bird screen over rain hood openings to eliminate the possibility of
insects, birds, water, or debris entering the unit.

Use flexible ductwork or nonflammable cloth collars to attach ductwork to the unit and to control
vibration transmission to the building. Attach the ductwork to the unit using the flanges provided.
Locate the unit and ductwork so that the return air does not short circuit to the supply air inlet.

Avoid directing the hot exhaust air toward adjacent doors or windows.

Normal operating sound may be objectionable if the condensing unit is placed directly over quiet work
areas. Ductwork that runs through a conditioned space or is exposed to areas where condensation
may occur must be insulated. Whenever possible, ductwork should be suspended using flexible
hangers. Ductwork should not be fastened directly to the building structure. In applications where
the ceiling plenum is used as the heat rejection domain, the discharge air must be directed away from
the condensing unit air inlet and a screen must be added to the end of the discharge duct to protect
service personnel.

For multiple unit installations, space the units so that the hot condensing unit exhaust air is not
directed toward the air inlet of an adjacent unit.

Table 31 Airflow CFM (CMH)

3-Ton 5-Ton

60 Hz 2000 (3398) 3500 (5947)

50 Hz 1650 (2800) 3500 (5947)

Liebert® Challenger 3000

™

68

Split System Models

C

D

B

A

Customer-supplied

threaded rods for

module support

from ceiling (typ. 4)

SL-11085 Pg. 4

Air Outlet

Duct Connection

Air Outlet

Duct Dimension

Note:Unit is evenly spaced in
reference to threaded for centers.

PIPING CONNECTIONS

DIMENSIONAL DATA

Blower Motor Service Access
Panel on Bottom of Unit
Minimum Clearance 33" (838mm)
for Component Access and Removal.

50-1/4" (1276mm)

Overall Dimension

46-1/2" (1181mm)

Cabinet Dimension

48-1/4" (1225mm)

Threaded Rod Centers

21-1/2" (546mm )

Cabinet Dimension

22-1/2"

(572mm)

Cabinet

Dimension

19-1/2" (495mm)

Threaded Rod

Centers

Duct Flange

2-1/4"

(57mm)

1"

(25.4mm)

20-7/16"
(519mm)
Coil Inlet
Duct
Conn.

Minimum Clearance 33" (838mm)
This End for Component Access
and Removal

20-3/4"

(527mm)

1/2" (13mm)

7/8" (22.2mm) Dia.
Electrical Entrance
for Low-Voltage
Connection

30-1/8"
(765mm)
Coil Inlet

Duct Connection

Liquid Line
Male Quick
Connect

Suction Line
Male Quick
Connect

Integral Hanging
Bracket

Holes for Module
Rigging (typ. 2 each end)

7/8" (22.2mm) Dia.
Electrical Entrance
for Line-Voltage
Connection

22-3/4" (578mm)

Overall Dimension

Figure 36 3-ton centrifugal air-cooled condensing unit dimensional data & piping connections

69 Liebert® Challenger 3000

™

Figure 37 3-ton centrifugal air-cooled condensing unit (con’t.)

DPN000207
Rev0

Single- or three-phase
electric service
not by Liebert

Optional factory-installed
disconnect switch

Factory-wired
to components
on electric panel

Line voltage electric power
supply conduit entrance

Field-supplied 24V
NEC Class 2 wiring
to fan/coil unit

Single- or three-phase
electric service
not by Liebert

Field-supplied unit disconnect
switch when optional disconnect
is not provided in unit

Connection terminal
for field-supplied
grounding wire

Low-voltage electric
power supply entrance

Heat rejection connection.
Field-supplied 24V NEC
Class 2 wiring. See NOTE 2.

NOTES:

1. Refer to specification sheet for full load amp. and wire size amp. ratings.

2. Control voltage wiring must be a minimum of 16 GA (1.6mm) for up to 75' (23m)
or not to exceed 1 volt drop in control line.

Wire connections from evaporator
mod:

1. 24V ground

2. 24V supply

3. High-pressure alarm (optional)

4. Hot gas bypass connection
(only on units with hot gas
bypass)

Split System Models

Liebert® Challenger 3000

™

70

Figure 38 5-ton centrifugal air-cooled condensing unit dimensional data

SL-11087 Pg. 4

24"

(610mm)

Cabinet

Dimension

32"

(812.8mm)

Cabinet

Dimension

3-3/8"

(85.7mm)

14-1/2"

(368.3mm)

8-15/16"

(227mm)

15-3/4"

(400mm)

1-5/8"

(41.1mm)

54"

(1371.6mm)

Cabinet

Dimension

1-3/4"

(44.5mm)

51-13/16"

(1316mm)

Threaded Rod

Centers

21-1/4"

(539.8mm)

48"

(1219.2mm)

33-5/8"

(854.1mm)

Threaded Rod

Centers

Hanger
Bracket

Shaded area indicates a
recommended clearance of
30" (762mm) for component
access and removal.

Customer-supplied
threaded rods for
module support
from ceiling (typ. 4)

1/2" (12.7mm) dia. holes for
threaded rods (typ. 2 each end)

Air
Outlet

Air Inlet

7/8" (22.2mm) & 1-1/8" (28.6mm)
dia. knockouts electrical entrance for high­voltage connection (Single Point Power Kit)

7/8" (22.2mm) & 1-1/8" (28.6mm)
dia. knockouts electrical entrance
for high-voltage connection

Suction Line male quick
connect location

Liquid Line male quick
connect location

Single Point Power Kit
connection to Evaporator

NOTE: Unit is spaced evenly in
reference to threaded
rod centers.

7/8" (22.2mm) dia.
electrical entrance
for low voltage connection

7/8" (22.2mm) dia. knockout
electrical entrance for alternate
control panel low-voltage routing

Split System Models

71 Liebert® Challenger 3000

™

Figure 39 5-ton centrifugal air-cooled condensing unit dimensional data (con’t.)

DPN000226
Rev0

Field-Supplied Unit Disconnect
Switch when Factory Unit
Disconnect Switch is not Supplied

Electric service
not by Liebert

Optional
Factory-Installed
Disconnect Switch

AIR COOLED

Line Voltage Electric Power
Supply Conduit Voltage

Connection terminal
for field-supplied
earth grounding wire

Removable Access Panels

Field-Supplied 24V NEC Class 2
wiring between condensing unit
and fan/coil unit

Low-voltage
electric power
supply conduit
entrance

Heat rejection connection. Field-supplied
24V NEC Class 2 wiring. See Note 2.
Wire connections from evaporator module.

1. 24V GND

2. 24V supply

3. High pressure alarm (optional)

4. Hot gas bypass connection (only on
units with hot gas bypass)

NOTES:
Refer to specification sheet for full load amp and wire size amp ratings.
Control voltage wiring must be a minimum of 16 GA (1.6mm) for up
to 75’ (23m) or not to exceed 1 volt drop in control line.

Split System Models

Liebert® Challenger 3000

™

72

Figure 40 Split systems general arrangement

Condenser
Coil

1/2" (12.7mm) NPT
Pressure Relief Valve

Pressure
Balancing
Val ve

Sight
Glass

Check
Val ve

Lee-Temp
Receiver

High-Pressure
Switch

Scroll
Compressor

Scroll
Compressor

Head-Pressure
Control with
Integral Check
Val ve

Liquid Line
Solenoid Valve

Suction Line
Male Quick
Connect
Coupling*

Suction Line
Male Quick
Connect
Coupling*

Liquid Line
Male Quick
Connect
Coupling*

Suction Line
Female Quick
Connect
Coupling*

Suction Line
Female Quick
Connect
Coupling*

Liquid Line
Female Quick
Connect
Coupling*

Liquid Line
Male Quick
Connect
Coupling*

Liquid Line
Female Quick
Connect
Coupling*

Filter
Dryer

Filter
Dryer

Service
Access
Ports

Service
Access
Ports

Sensing
Bulb

Sensing
Bulb

Expansion
Val ve

Expansion
Val ve

External
Equalizer

External
Equalizer

Evaporator
Coil

Evaporator
Coil

High-Pressure
Switch

Tube in
Tube
Condenser

Tube in
Tube
Condenser

Water/Glycol
Return
Line

AIR COOLED

WATER COOLED

GLYCOL COOLED

Liquid Injection
Val v e Bulb

Liquid Injection
Val ve Bu lb

Hot-Gas
Bypass Solenoid
Val ve

Hot-Gas
Bypass
Solenoid
Val ve

Hot-Gas
Bypass Control
Val ve

Hot-Gas
Bypass Control
Val ve

Receiver Heater
Pressure Limiting
Switch

Water/Glycol
Supply Line

Liquid
Injection
Val ve

Liquid
Injection
Val ve

SL-11900 Pg. 5

Fluid Supply
to Unit

Shutoff
Val ves *

Hose Bibs *

Fluid Return
from Unit

Fluid
Return
from Unit

Fluid Supply
to Unit

3-Way Water
Regulating Valve (optional)

2-Way Water
Regulating Valve

OPTIONAL PIPING

FACTORY PIPING

* Components are not supplied by Liebert but
are recommended for proper circuit operation
maintenance.

Split System Models

73 Liebert® Challenger 3000

™

7.6 Water and Glycol-Cooled Condensing Units

For installation guidelines, refer to Installing the Indoor Condensing Unit on page 67.

7.6.1 Piping Considerations

It is recommended that manual service shutoff valves be installed at the supply and return line to
each unit. This will provide for routine service or emergency isolation of the unit.

When the water source for the condenser is of poor quality, it is good practice to provide cleanable
filters in the supply line. These filters will trap the particles in the water supply and extend the
service life of the water-cooled condenser.

3-Ton Connection Sizes

Condenser Water Inlet 7/8" OD Cu

Condenser Water Outlet 7/8" OD Cu

Suction Line 1-1/8 - 12 male #11 quick connect

Liquid Line: 5/8 - 18 male #6 quick connect

5-Ton Connection Sizes

Condenser Water Inlet 1-1/8" OD Cu

Condenser Water Outlet 1-1/8" OD Cu

Suction Line 1-7/16" - 16 male #12 quick connect

Liquid Line 1-1/16" - 12 male #10 quick connect

Split System Models

Table 32 Water and glycol-cooled condensing unit data

Model

MC_44W
MC_43W

MC_69W
MC_68W

Net Weight,

lb (kg)

200 (91) 1.7 (6.4)

282 (128) 2.0 (7.6)

Glycol Volume,

gal (l)

7.6.2 Condenser Water Requirements

The standard maximum water pressure is 150 psig (1034 kPa). For applications above this pressure,
consult the factory about high pressure systems.

The system will operate in conjunction with a cooling tower, city water, or drycooler.

7.6.3 Regulating Valve

For details, refer to sections 4.3.1 - Standard Valve - 150psig (1034kPa) System for 3 & 5-Ton
Units (Johnson Controls Valve) High Pressure Valve - 350psig (2413 kPa) System for 5-Ton
Units (Johnson Controls Valve) and 4.3.2 - High Pressure Valve - 350 psig (2413 kPa) System
for 3-Ton Units (Metrex Valve).

Liebert® Challenger 3000

™

74

7.6.4 Glycol Systems

Suction Line
Male Quick
Connect

20-3/4"

(527mm)

46-1/2" (1181mm)

Minimum Clearance
33" (838mm) This side
for component access
and removal

Customer-Supplied
Threaded Rods for Module
Support from Ceiling (typ. 4)

Outlet

Inlet

DIMENSIONAL DATA

3/4" (19mm) NPT Female

Water/Glycol Outlet Connection

Integral Hanging Bracket

22-1/2"

(572mm)

SL-11085 Pg. 6

PIPING CONNECTIONS

12" (305mm)

Threaded Rod

Centers

14" (356mm)

Overall Cabinet

Dimension

Holes for Module
Rigging (typ. 2 each end)

3/4" (19mm) NP T Female

Water/Glycol Inlet Connection

7/8" (22mm) Dia.
Electrical Entrance
for Low-Voltage Connection

7/8" (22mm) Dia.
Electrical Entrance
for High-Voltage
Connection

Liquid Line
Male Quick
Connect

Cabinet

Dimension

Cabinet Dimension

8-7/16" (214mm)

8-7/8" (225mm)

50-1/4" (1276mm)
Overall Dimension

48-1/4" (1225mm)
Threaded Rod Centers

3-7/8" (98mm)

For split system glycol systems, use drycooler and pump data found in 5.0 - Glycol/GLYCOOL­Cooled Models—Self-Contained Compressor. See Table 18 - Drycooler data.

Electrical control interconnect to drycooler is wired from water/glycol condensing unit.

Figure 41 3-ton water/glycol-cooled condensing unit

Split System Models

75 Liebert® Challenger 3000

™

Figure 42 3-ton water/glycol-cooled condensing unit (con’t.)

Split System Models

Single- or
three-phase
electric service
not by Liebert

Earth/ground connection
Connection terminal for field-supplied
earth-grounding wire

Line-voltage electric
power supply entrance

Field-supplied unit disconnect
switch when optional disconnect
is not provided in unit

Field-supplied 24V NEC Class 1
wiring to fan/coil unit

Field-supplied 24V NEC Class 1
wiring to drycooler
(glycol-cooled units only)

Factory-wired components
on electric panel

Optional factory-installed
disconnect switch

Low-voltage electric
power supply entrance

Remote drycooler connection
Terminals 70 & 71 supplied
for connection to remote drycooler
Use field-supplied 24V NEC Class 1
wiring (glycol-cooled units only)

NOTES

1. Refer to specification sheet for full load amp
and wire size amp ratings.

2. Control voltage wiring must be a minimum
of 16 GA (1.6mm) for up to 75' (23m) or
not to exceed 1 volt drop in control line.

Heat rejection connection.
Field-supplied 24V NEC Class 2 wiring.
Wire connections from evaporator mod:

1. 24V GND

2. 24V supply

3. High-pressure alarm (optional)

4. Hot gas bypass connection
(only on units with hot-gas bypass)

DPN000209
Rev. 0

Liebert® Challenger 3000

™

76

Figure 43 5-ton water/glycol-cooled condensing unit dimensional data

7/8" (22.2mm) & 1-1/8" (28.6mm)
dia. knockouts electrical entrance for
line voltage connection (Single Point
Power Kit)

Removable
Access Panel

1/2" (12.7mm) dia. holes for
module rigging (typ. 2 each end)

Customer-supplied
threaded rods
for module support
from ceiling (typ. 4).

NOTE: Unit is evenly spaced in reference
to threaded rod centers.

1" (25.4mm) NPT Female
Water/Glycol Outlet Connection

1" (25.4mm) NPT Female
Water/Glycol Inlet Connection

7/8" (22.2mm) dia. knockout
electrical entrance for alternate
control panel low-voltage routing

7/8" (22.2mm) dia. electrical entrance
for low-voltage connection

Suction Line male quick
connect location

Liquid Line male quick
connect location

7/8" (22.2mm) & 1-1/8" (28.6mm)
dia. knockouts electrical entrance
for line voltage connection

32"

(812.8mm)

Cabinet

Dimension

32"

(812.8mm)

Cabinet

Dimension

24 "

(610mm)

Cabinet

Dimension

33-5/8"

(854.1mm)

Threaded Rod

Centers

29-13/16 "

(757.2mm)

Threaded Rod

Centers

7"

(177.8mm)

SL-11087
Pg. 6

Hanger
Bracket

Shaded area indicates a
recommended clearance of
30" (762mm) for component
access and removal.

8-7/16"

(214.4mm)

3-3/4"
(95.2mm)

Split System Models

77 Liebert® Challenger 3000

™

Figure 44 5-ton water/glycol-cooled condensing unit (con’t.)

DPN000228
Rev. 0

Field-supplied unit disconnect
switch when factory unit
disconnect switch is not suplied

Electric service;
not by Liebert

WATER/GLYCOL

Optional factory-installed
disconnect switch

Field-supplied 24V
NEC Class 1 wiring
to fan/coil unit

Field-supplied 24V
NEC Class 1 wiring
to drycooler
(glycol-cooled units only)

Line voltage electric
power supply conduit voltage

Removable
Access Panel

Heat rejection connection.
Field-supplied 24V NEC Class 2 wiring.
Wire connections from evaporator mod:

1. 24V ground

2. 24V supply

3. High pressure alarm (optional)

4. Hot gas bypass connection
(only on units with hot gas bypass)

Remote drycooler
connection; field-supplied
24V NEC Class 1 wiring
(glycol-cooled units only)

Connection terminal
for field-supplied
earth grounding wire

Low-voltage electric
power supply conduit
entrance

Field-supplied 24V NEC
Class 1 wiring between
glycol condensing unit
and drycooler

NOTES

1. Refer to specification sheet for full load amp. and wire size amp. ratings.

2. Control voltage wiring must be a minimum of 16 GA (1.6mm) for up to 75' (23m)
or not to exceed 1 volt drop in control line.

Split System Models

Liebert® Challenger 3000

™

78

R407C Refrigerant

8.0 R407C REFRIGERANT

Table 33 R407C pressure/temperature chart for operation and superheat (discharge/hot gas and suction

gas)

Temperature Gauge Pressure Temperature Gauge Pressure Temperature Gauge Pressure

°F °C Psig kPa °F °C Psig kPa °F °C Psig kPa

0.0 -17.8 18.9 130 35.0 1.7 54.8 378 70.0 21.1 114.9 792

1.0 -17.2 19.6 135 36.0 2.2 56.1 387 72.0 22.2 119.3 822

2.0 -16.7 20.4 141 37.0 2.8 57.5 396 74.0 23.3 124 853

3.0 -16.1 21.2 146 38.0 3.3 58.9 406 76.0 24.4 128 885

4.0 -15.6 22.0 152 39.0 3.9 60.3 415 78.0 25.6 133 917

5.0 -15.0 22.8 157 40.0 4.4 62.2 429 80.0 26.7 138 950

6.0 -14.4 23.6 163 41.0 5.0 63.1 435 82.0 27.8 143 984

7.0 -13.9 24.5 169 42.0 5.6 64.6 445 84.0 28.9 148 1019

8.0 -13.3 25.4 175 43.0 6.1 66.1 456 86.0 30.0 153 1054

9.0 -12.8 26.2 181 44.0 6.7 67.6 466 88.0 31.1 158 1091

10.0 -12.2 27.1 187 45.0 7.2 69.1 476 90.0 32.2 164 1128

11.0 -11.7 28.0 193 46.0 7.8 70.7 487 92.0 33.3 169 1167

12.0 -11.1 28.9 200 47.0 8.3 72.2 498 94.0 34.4 175 1206

13.0 -10.6 29.9 206 48.0 8.9 73.8 509 96.0 35.6 181 1246

14.0 -10.0 30.8 213 49.0 9.4 75.4 520 98.0 36.7 187 1287

15.0 -9.4 31.8 219 50.0 10.0 77.1 531 100.0 37.8 193 1329

16.0 -8.9 32.8 226 51.0 10.6 78.7 543 102.0 38.9 199 1372

17.0 -8.3 33.8 233 52.0 11.1 80.4 554 104.0 40.0 205 1416

18.0 -7.8 34.8 240 53.0 11.7 82.1 566 106.0 41.1 212 1461

19.0 -7.2 35.8 247 54.0 12.2 83.9 578 108.0 42.2 219 1507

20.0 -6.7 36.9 254 55.0 12.8 85.6 590 110.0 43.3 225 1553

21.0 -6.1 38.0 262 56.0 13.3 87.4 603 112.0 44.4 232 1601

22.0 -5.6 39.0 269 57.0 13.9 89.2 615 114.0 45.6 239 1650

23.0 -5.0 40.1 277 58.0 14.4 91.0 628 116.0 46.7 247 1701

24.0 -4.4 41.3 284 59.0 15.0 92.9 640 118.0 47.8 254 1752

25.0 -3.9 42.4 292 60.0 15.6 94.8 653 120.0 48.9 262 1804

26.0 -3.3 43.6 300 61.0 16.1 96.7 666 122.0 50.0 269 1858

27.0 -2.8 44.7 308 62.0 16.7 98.6 680 124.0 51.1 277 1912

28.0 -2.2 45.9 317 63.0 17.2 100.5 693 126.0 52.2 285 1968

29.0 -1.7 47.1 325 64.0 17.8 102.5 707 128.0 53.3 294 2025

30.0 -1.1 48.4 333 65.0 18.3 104.5 721 130.0 54.4 302 2083

31.0 -0.6 49.6 342 66.0 18.9 106.5 735 132.0 55.6 311 2143

32.0 0.0 50.9 351 67.0 19.4 108.6 749 134.0 56.7 320 2203

33.0 0.6 52.1 359 68.0 20.0 110.7 763 136.0 57.8 329 2265

34.0 1.1 53.5 369 69.0 20.6 112.8 778 138.0 58.9 338 2329

- - - - - - - - 140.0 60.0 347 2393

NOTE

Use this table for superheat and for control adjustment (e.g., pressure switches). See
Table 34 for subcooling.

79 Liebert® Challenger 3000

™

R407C Refrigerant

Table 34 R407C pressure/temperature chart for subcooling only (liquid measurements)

Temperature Pressure Gauge Temperature Pressure Gauge Temperature Pressure Gauge

°F °C Psig kPa °F °C Psig kPa °F °C Psig kPa

36.0 2.2 73 500 59.0 15.0 114 786 94.0 34.4 203 1402

37.0 2.8 74 511 60.0 15.6 116 801 96.0 35.6 209 1444

38.0 3.3 76 522 61.0 16.1 118 815 98.0 36.7 216 1488

39.0 3.9 77 533 62.0 16.7 120 830 100.0 37.8 222 1532

40.0 4.4 79 544 63.0 17.2 123 845 102.0 38.9 229 1578

41.0 5.0 81 556 64.0 17.8 125 860 104.0 40.0 236 1624

42.0 5.6 82 567 65.0 18.3 127 875 106.0 41.1 242 1671

43.0 6.1 84 579 66.0 18.9 129 891 108.0 42.2 249 1720

44.0 6.7 86 591 67.0 19.4 131 906 110.0 43.3 257 1769

45.0 7.2 87 602 68.0 20.0 134 922 112.0 44.4 264 1819

46.0 7.8 89 615 69.0 20.6 136 938 114.0 45.6 271 1870

47.0 8.3 91 627 70.0 21.1 138 954 116.0 46.7 279 1922

48.0 8.9 93 639 72.0 22.2 143 987 118.0 47.8 287 1975

49.0 9.4 95 652 74.0 23.3 148 1021 120.0 48.9 294 2029

50.0 10.0 96 664 76.0 24.4 153 1055 122.0 50.0 302 2085

51.0 10.6 98 677 78.0 25.6 158 1090 124.0 51.1 310 2141

52.0 11.1 100 690 80.0 26.7 163 1126 126.0 52.2 319 2198

53.0 11.7 102 704 82.0 27.8 169 1163 128.0 53.3 327 2256

54.0 12.2 104 717 84.0 28.9 174 1201 130.0 54.4 336 2315

55.0 12.8 106 730 86.0 30.0 180 1239 132.0 55.6 345 2376

56.0 13.3 108 744 88.0 31.1 185 1279 134.0 56.7 354 2437

57.0 13.9 110 758 90.0 32.2 191 1319 136.0 57.8 363 2500

58.0 14.4 112 772 92.0 33.3 197 1360 138.0 58.9 372 2563

--------140.0 60.0 381 2628

NOTE

Use this table for subcooling calculation ONLY. See Table 33 for superheat or control
adjustment.

8.1 Calculating Subcooling

Example

Measure the liquid pressure (e.g., 200 psig). Find the liquid saturation temperature at that pressure
on Table 34 (e.g., 93°F). Measure the temperature of the liquid line (e.g., 90°F). Subtract the actual
temperature from the liquid saturation temperature to obtain the subcooling (e.g., 93 – 90 = 3°F). If
the actual temperature is greater than the liquid saturation temperature, then there is no subcooling,
and the fluid may be a mixture of liquid and vapor.

Why There Are Two R407C Temperature and Pressure Tables

R407C is a blend of refrigerants that exhibits a temperature “glide” of approximately 8 to 12°F
(4 to 7°C). This “glide” is the difference between the liquid and vapor saturation temperatures at a
given pressure. Use the correct table for the saturation temperature you need. Table 33 is for
superheat or operating controls. Table 34 is for subcooling only.

Liebert® Challenger 3000

™

80

Ensuring The High Availability
Of Mission-Critical Data And Applications.

Emerson Network Power, a business of Emerson (NYSE:EMR),
is the global leader in enabling Business-Critical Continuity

™

from grid to chip for telecommunication networks, data centers,
health care and industrial facilities. Emerson Network Power
provides innovative solutions and expertise in areas including
AC and DC power and precision cooling systems, embedded
computing and power, integrated racks and enclosures,
power switching and controls, infrastructure management,
and connectivity. All solutions are supported globally by local
Emerson Network Power service technicians. Liebert AC power,
precision cooling and monitoring products and services
from Emerson Network Power deliver Efficiency Without

™

Compromise

by helping customers optimize their data center

infrastructure to reduce costs and deliver high availability.

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.
© 2009 Liebert Corporation
All rights reserved throughout the world. Specifications subject to change
without notice.
® Lieber t is a registered t rademark of Lieber t Corporation.
All names referred to are trademarks
or registered trademarks of their respective owners.

SL-11962_REV4_12-12

Technical Support / Service

Web Site

www.liebert.com

Monitoring

[e-mail]

800-222-5877

Outside North America: +00800 1155 4499

Single-Phase UPS & Server Cabinets

[e-mail]

800-222-5877

Outside North America: +00800 1155 4499

Three-Phase UPS & Power Systems

800-543-2378

Outside North America: 614-841-6598

Environmental Systems

800-543-2778

Outside the United States: 614-888-0246

Locations

United States

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P.O. Box 29186

Columbus, OH 43229

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[phone]

Fax: [phone]

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29/F, The Orient Square Building

F. Ortigas Jr. Road, Ortigas Center

Pasig City 1605

Philippines

[phone]

Fax: [phone]

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Emerson, Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks of Emerson Electric Co. or one of its affiliated companies.
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™

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