TABLE OF CONTENTS
1 Important Safety Instructions 5
2 Product Description 9
2.1 General Product Information 9
2.1.1 Product/System Description 9
2.2 Equipment Inspection 10
2.3 Equipment Handling 10
2.3.1 Handling the Liebert XDC While it is on Skid and Packaged 10
2.3.2 Unpacking the Liebert XDC 11
2.3.3 Removing the Unit from the Skid Using a Forklift 11
2.3.4 Removing the Unit from the Skid using Rigging 12
2.3.5 Moving the Liebert XDC Using Piano Jacks 13
2.3.6 Removing the Unit from the Piano Jacks 14
3 Installation 15
3.1 Mechanical Considerations 15
3.1.1 Positioning the Liebert XDC 15
3.1.2 Placing the Liebert XDC on a Floor Stand 17
3.1.3 Positioning the Liebert XDC with Floor Stand 20
3.2 Electrical Considerations 22
3.2.1 High Voltage Connections 22
3.2.2 Connecting High-Voltage Cables 23
3.3 External Pump Overloads 27
3.4 Extra Low Voltage Connections 28
3.5 Remote Sensor Installation—Proper Placement 34
4 Piping and Filling with Refrigerant: R-134a and R-407C Circuits 37
4.1 European Union Fluorinated Greenhouse Gas Requirements 37
4.2 Recommended Pipe Size 37
4.3 Liebert XDC Interconnection With Liebert XD Cooling Module 38
4.4 Piping Installation Method 38
4.4.1 Piping Installation—R-134a Pumped Circuit 39
4.4.2 Bypass Flow Controllers 39
4.5 Piping Details—Shutoff/Isolation Valves 41
4.6 Filling the Pumped Circuit—R-134a 41
4.6.1 Calculating Refrigerant Charge—Example 44
4.6.2 Piping for Direct Expansion (DX) Circuit—R-407C Air-Cooled Units 45
4.7 Install Double Discharge Risers 45
4.7.1 Air-Cooled Condenser with Liebert Lee-Temp “Flooded Condenser” Head Pressure
Control System—R-407C (DX) Circuit 54
4.8 Filling the Direct Expansion (DX) Circuit—R-407C 55
4.9 System Refrigerant Charges Over 55lb. (24.9kg) Require Additional Oil 57
4.9.1 Liebert XDC DX R-407C Circuit Volume 57
5 Installation Checklist 59
Vertiv | Liebert® XDC™ User Manual | 3
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