Liebert manual Start the Liebert XDH, Operation

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Operation

8.0OPERATION

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.

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.

Figure 26 Fan switches

Upper Fan Bank Switch

Lower Fan Bank Switch

8.1Start 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.

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Contents Liebert XDH General Safety Guidelines Fluorinated Greenhouse Gas Requirements-European UnionTable of Contents Maintenance SpecificationsOperation 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 PointsVenting the Holding Charge and Connecting to Mains Piping Considerations-Hard-Piped ConnectionsRear of Liebert XDH Recommended Piping Size Connecting Methods-One-Shot ConnectionsConnection Methods for Hard Pipe Brazing PreparationsDegree Connection Connecting Liebert XD Flex Pipes to Liebert XDH Modules Header SystemTools Required 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