Liebert XDH manual Connecting High Voltage Wiring, Electrical

Page 27

Electrical

6.0ELECTRICAL

The unit must be installed in accordance with national wiring regulations. Refer to the unit’s serial tag for electrical requirements. Refer to Table 3 for details.

WARNING

! Risk of electric shock. Can cause death or injury.

Disconnect both electric power cords before working within the unit.

6.1 Connecting High Voltage Wiring

The Liebert XDH requires single-phase power for normal operation. The unit ships with two power cords, each 10 feet (3m) long with NEMA 5-15 plugs, which connect to common, three-prong outlets (see Figure 24).

The XDH will function properly with only one power cord. The second power cord permits connection to a separate power source to increase reliability—If one power source fails, the cord connected to the remaining, live power source will power both banks of fans.

To attach the power cords, clip the plastic hangers attaching the cords to the Liebert XDH. Press the appropriate end of each cord onto the electrical inlet. Attach the strain-relievers onto the power cords and press the assemblies into the cable exit slots.

Figure 24 Liebert XDH electrical connections

60Hz MODELS ONLY Field wiring connections at terminal strip to be NEC Class 2. Use switch contacts with 75VA minimum rating.

50Hz MODELS ONLY Field wiring connections

at terminal strip for safety extra low voltage circuits only. Use switch contacts rated 75VA minimum, 24VAC maximum.

Condensate Detection

Dry Contacts-Low Voltage

Connections

(Upper Circuit 84, 85)

Condensate Detection

Dry Contacts-Low Voltage

Connections

(Lower Circuit 82, 83)

IEC Primary Power Inlet

IEC Secondary Power Inlet

Rear of Liebert XDH

Power Cord Strain Relievers

Panel Removed for Clarity

23

Page 26 Page 28
Image 27
Page 26 Page 28
Contents Liebert XDH Fluorinated Greenhouse Gas Requirements-European Union General Safety GuidelinesTable of Contents Maintenance SpecificationsOperation Liebert XDH component locations Example XDH32BKParts Included With the Liebert XDH Pre-Installation ChecksProduct Description ReferencesRoom Preparation Installation ConsiderationsChecking and Unpacking Product/System DescriptionRecyclable Packaging Equipment InspectionUnpacking the Unit Unit HandlingPrepare ramp to remove the Liebert XDH from shipping pallet Taking the Unit off the PalletAttaching ramp, removing the Liebert XDH from pallet Installing the Liebert XDH Within the Enclosure Row Determining Placement in the Conditioned SpaceXDH Airflow DirectionChange airflow direction Install Air Diffusers for Best Airflow DirectionEuropean Union Fluorinated Greenhouse Gas Requirements System Connection ConfigurationTypical Liebert XDH piping-non-interlaced connection Indirect system configuration-hydraulic system schematic Connection Methods and Points Hard pipe connection diagramVenting the Holding Charge and Connecting to Mains Piping Considerations-Hard-Piped ConnectionsRear of Liebert XDH Brazing Preparations Connecting Methods-One-Shot ConnectionsConnection Methods for Hard Pipe Recommended Piping SizeDegree Connection Connecting Liebert XD Flex Pipes to Liebert XDH Modules Header SystemTools Required Liebert XD prefabricated piping assembly Tools Required Insulation Return Line Service Valve SupplyElectrical Connecting High Voltage WiringCondensate wiring entry points Connecting Low Voltage Wiring-OptionalCharging with Refrigerant and Starting the Liebert XD System Checklist for Proper InstallationOperation Start the Liebert XDHFluorinated Greenhouse Gas Requirements Internal AccessRemove fan tray Remove Fan TraySpecifications Liebert XD Flex Pipe assemblies, supply and return Page Ne t
Top Page Image Contents