Liebert XDH 2.0 I

Introduction

2

2.0 INTRODUCTION

2.1 Product Description

The Liebert XDH cooling module is designed to be placed within a row of server enclosures in a hot-

aisle-cold-aisle arrangement. The Liebert XDH, available in a half-rack-width unit, is intended for

use with a Liebert XD pumped refrigerant cooling system, supplied by either a Liebert XDP or Liebert

XDC.

Warmer air from the enclosures is drawn in through the rear of the Liebert XDH, cooled and blown

into the cold aisle in a diffuse pattern. The cooling air is then drawn into the enclosures to cool the

equipment.

The Liebert XDH has dual refrigeration circuits, one in the upper half of the unit and the other in the

lower half. This permits increasing and decreasing cooling levels in response to server room condi-

tions. The dual refrigeration circuits permits interlaced connection of two Liebert XD refrigerant

sources to enhance system reliability.

Controls on the front of the Liebert XDH permit independent operation of the two banks of fans. Dual

power connections ensure continued fan operation if one of two electrical sources fails.

The Liebert XDH is intended for use in low-humidity environments and does not need a drain connec-

tion. A condensate pan under each refrigeration unit collects the small amount of moisture expected

in the server room. An optional, factory-installed condensate detection system is available. The Lie-

bert XDH is available with uni-directional or bi-directional air diffusers.

2.2 References

This document must be used together with site specific documentation and documentation for other

parts of the system.

2.3 Pre-Installation Checks

• Verify that the Liebert XDH voltage matches the available utility power. The serial tag with this

information is accessible by opening the Liebert XDH’s rear door. The tag is on a shelf near the

Liebert XDH’s midline.

• Check the received materials to be sure all required assemblies and parts have been received. If

you discover any external damage, report it to the shipping company and your local Liebert repre-

sentative.

2.4 Parts Included With the Liebert XDH

• User manual (this document)

• Lie bert XDH module

• P ower cords

• Shipping/floor mounting brackets

• Tie -down bracket assembly

• Diffusers (top and bottom)

Contents

Main GENERAL SAFETY GUIDELINES Fluorinated Greenhouse Gas RequirementsEuropean Union TABLE OF CONTENTS FIGURES TAB LE S 1.0 LIEBERT XDH COMPONENT LOCATIONS AND MODEL NUMBER NOMENCLATURE Figure 1 Liebert XDH component locations Example: XDH32BK 0 XD H 32 B K 0 2.0 I 2.1 Product Description 2.2 References 2.3 Pre-Installation Checks 2.4 Parts Included With the Liebert XDH 2.5 Installation Considerations 2.5.1 Room Preparation 3.0 GENERAL PRODUCT INFORMATION 3.1 Product/ System Description 3.2 Checking and Unpacking 3.3 Equipment Inspection 3.3.1 Recyclable Packaging R 3.3.2 Unit Handling 3.3.3 Unpacking the Unit 3.3.4 Taking the Unit off the Pallet Page 4.0 MECHANICAL CONSIDERATIONS 4.1 Determining Placement in the Conditioned Space 4.2 Installing the Liebert XDH Within the Enclosure Row Page Install Air Diffusers for Best Airflow Direction 5.0 P 5.1 European Union Fluorinated Greenhouse Gas Requirements 5.2 System Connection Configuration Liebert XDP / Liebert XDC #1 Liebert XDP / Liebert XDC #2 Liebert XDP / Liebert XDC #1 Liebert XDP / Liebert XDC #2 Figure 14 Indirect system configurationhydraulic system schematic 5.3 Connection Methods and Points 5.4 Piping ConsiderationsHard-Piped Connections Detail "A" 5.4.1 Venting the Holding Charge and Connecting to Mains 7/8" Return, Lower 7/8" Return, Upper Refrigeration Circuit Rear of Liebert XDH 5.5 Connection Methods for Hard Pipe 5.6 Recommended Piping Size 5.6.1 Connecting MethodsOne-Shot Connections 5.7 Field Installation of Liebert XD Flex Pipe Kit on the Liebert XDH Straight Connection 90-Degree Connection 5.8 Connecting Liebert XD Flex Pipes to Liebert XDH Modules 5.8.1 Header System 5.9 Connecting a Liebert XDH with Liebert XD Flex Pipe to an Operational Liebert XD System Tools Required NOTICE 5.10 Disconnecting a Liebert XDH With Liebert XD Flex Pipe From a Liebert XD System NOTICE Tools Required Page 6.0 E 6.1 Connecting High Voltage Wiring 6.2 Connecting Low Voltage WiringOptional 7.0 INSTALLATION CHECKLIST AND SYSTEM FILL FOR STARTUP 7.1 Checklist for Proper Installation 7.2 Charging with Refrigerant and Starting the Liebert XD System 8.0 O 8.1 Start the Liebert XDH 9.0 M 9.1 Internal Access 9.2 Fluorinated Greenhouse Gas Requirements 9.3 Remove Fan Tray 10.0 S Table 3 Liebert XDH specifications Models Number of Fans Table 4 Liebert XD Flex Pipe assemblies, supply and return Page Ensuring The High Availability Of Mission-Critical Data And Applications. Technical Support / Service Locations