Liebert XDH manual Airflow Direction, Xdh

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Mechanical Considerations

4.2.1Airflow Direction

If the Liebert XDH is installed at the end of a row, Liebert recommends using uni-directional air dif- fusers. The uni-directional diffusers are designed to blow cooling air to the left; the diffusers can be used for right air discharge by removing them from the Liebert XDH, turning them 180 degrees, then reattaching them to the Liebert XDH.

If the Liebert XDH is installed between racks, Liebert recommends using bi-directional air diffusers. These diffusers blow air right and left, as well as to the front.

Two diffusers were shipped with the Liebert XDH. If uni-directional diffusers were ordered, the dif- fuser with the part number 186458 is designed for installation on the upper half of the Liebert XDH. The other diffuser, for use on the lower half of the Liebert XDH, has the part number 186459. When installed in these positions, the diffusers will direct the airflow to the left.

If directing the airflow in the opposite direction would improve cooling, the diffusers may be switched. See Install Air Diffusers for Best Airflow Direction on page 11.

Figure 9 Liebert XDH placement in enclosure row

Hot
Aisle
Liebert XDH	Liebert XDH	Liebert XDH		Liebert XDH
Cold
Aisle
	Liebert XDH	Liebert XDH	Liebert XDH	Liebert XDH
Hot
Aisle
Liebert	Liebert	Liebert		X
Liebert	Liebert	Liebert		DLiebert
XDH	XDH	XDH		XDH
Cold
Aisle
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Contents Liebert XDH General Safety Guidelines Fluorinated Greenhouse Gas Requirements-European UnionTable of Contents Operation MaintenanceSpecifications Example XDH32BK Liebert XDH component locationsReferences Pre-Installation ChecksProduct Description Parts Included With the Liebert XDHInstallation Considerations Room PreparationProduct/System Description Checking and UnpackingEquipment Inspection Recyclable PackagingUnit Handling Unpacking the UnitTaking the Unit off the Pallet Prepare ramp to remove the Liebert XDH from shipping palletAttaching ramp, removing the Liebert XDH from pallet Determining Placement in the Conditioned Space Installing the Liebert XDH Within the Enclosure RowAirflow Direction XDHInstall Air Diffusers for Best Airflow Direction Change airflow directionSystem Connection Configuration European Union Fluorinated Greenhouse Gas RequirementsTypical Liebert XDH piping-non-interlaced connection Indirect system configuration-hydraulic system schematic Hard pipe connection diagram Connection Methods and PointsRear of Liebert XDH Venting the Holding Charge and Connecting to MainsPiping Considerations-Hard-Piped Connections Recommended Piping Size Connecting Methods-One-Shot ConnectionsConnection Methods for Hard Pipe Brazing PreparationsDegree Connection Tools Required Connecting Liebert XD Flex Pipes to Liebert XDH ModulesHeader System Liebert XD prefabricated piping assembly Tools Required Return Line Service Valve Supply InsulationConnecting High Voltage Wiring ElectricalConnecting Low Voltage Wiring-Optional Condensate wiring entry pointsChecklist for Proper Installation Charging with Refrigerant and Starting the Liebert XD SystemStart the Liebert XDH OperationInternal Access Fluorinated Greenhouse Gas RequirementsRemove Fan Tray Remove fan traySpecifications Liebert XD Flex Pipe assemblies, supply and return Page Ne t