Liebert XDH 8.0 O

Operation

26

8.0 OPERATION

The Liebert XDH’s controls are on the front of the unit at the Liebert XDH’s midline for easy access.

Each switch controls the operation of one bank of three fans (see Figure 26). The separate switches

permit the use of only one bank of fans at a time, reducing the airflow if the Liebert XDH’s full cooling

capacity is not needed.

Figure 26 Fan switches

8.1 Start the Liebert XDH

The Liebert XDH’s fans must be on before starting the Liebert XDP or Liebert XDC that will supply

refrigerant to the Liebert XDHs.

To start the Liebert XDH, press either of the rocker switches to turn on one or both of the Liebert

XDH’s banks of fans. Pressing the left switch starts the fans in the upper half of the Liebert XDH; the

right switch, the lower fans.

The refrigerant sources, either Liebert XDP or Liebert XDC, must be started separately.

NOTE

At least one of the Liebert XDH’s banks of fans must be turned on before either the Liebert XDP

or Liebert XDC is switched on.

At least one of the Liebert XDH’s banks of fans must be operating at all times that the Liebert

XDP or Liebert XDC is operating. Operating either the Liebert XDP or the Liebert XDC without

at least one of the Liebert XDH’s banks of fans rotating may cause a system malfunction.

Upper Fan Bank Switch Lower Fan Bank Switch

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