Liebert XDK user manual Principle of Cooling Operation, Air / Water, Heat Exchanger

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Description

3.2Principle of Cooling Operation

Figure 2 Cooling airflow, side view

		Fan
		Bank
	Rear		Front
	of	19" Equipment	of
	XDK	19" Equipment	XDK
	XDK		XDK
		Air / Water
		Heat Exchanger

Cold Water Supply

Side of XDK

Air that has been heated by the servers to 95°F (35°C), for example, is circulated to a specially designed air/water heat exchanger by high-performance fans. The heated air is cooled to 68-77°F (20-25°C) and fed to the front of the server.

The server fans can draw in the air and feed it over internal components. Cold water is provided by a separate Liebert XD Pumping unit.

A condensate tray with a 5/8" outlet is below the heat exchanger.

NOTE

If the rear door (with fans) is opened, the front door must be opened. If the front door is opened, it is not necessary to open the rear door.

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Contents UserManual-17kW Important Safety Instructions Table of Contents Figures Introduction General operating data Proper ApplicationOperating Conditions General function DescriptionHeat Exchanger Principle of Cooling OperationAir / Water XDK general data Technical dataData Overview-XDK Control Automatic Door OpeningFunction Initial CommissioningManual Closing Manual OpeningEquipment INSPECTION, Handling and Storage Packaging MaterialHandling Storage Returning the Unit in Case of DamagePreparation for Installation Installation and CommissioningPositioning the XDK Remove Recirculation Air Duct Transport LockWater Connection Preparing Heat Exchanger for Initial CommissioningTop View Preparations for Connecting Condensed Water ConnectionRear FrontElectrical Connection Sealing the CabinetGeneral Inspection on Fans-Annual Servicing and MaintenanceFan Replacement Reinstall the fan by reversing the steps to remove the fan Inspect the Heat Exchanger-AnnualHeat exchanger replacement Replacing the Heat ExchangerDismantling and Disposal Suggested hydrologic levels Water Purity RequirementsPrevalent impurities and removal methods Unit Installation Checklist XDK Commissioning certificate Nominal values at setup siteCommissioning Certificate Control of status ConfigurationType of cabinet Function check Cold water facility on siteElectrical data / documents GPM Water Purity Requirements Page Ne t ItiTi n That