Liebert Network Card XDR W User Manual

Precision Cooling  
For Business-Critical Continuity™  
Back-of-Rack Cooling Module  
Liebert XDR-W Rack Cooling Module  
Flexibility:  
The Liebert XDR-W cooling modules are attached to the back of your selected  
racks, drawing hot air from the rack and cooling it to the point where the impact  
on the room is close to neutral, then discharging it back into the room. These  
modules are connected to a Liebert XDP-W coolant pumping unit, which acts as  
an isolating heat exchanger between the building chilled water source and the  
circulating cooling water.  
Installs and configures easily  
Allows scalability for  
future growth.  
Provides flexible configuration to  
eliminate hot spots.  
Higher Availability:  
Provides built-in redundancy:  
A dual pump in the coolant  
distribution unit will keep the  
fluid flowing; if a fan in the  
cooling module shuts down,  
the others keep running.  
The pumping unit maintains the  
coolant to the XDW-R at a  
temperature always above the  
actual dewpoint, to prevent  
condensation.  
The modular and adaptive design of the Liebert XDR-W unit also allows it to be  
easily added as the demand for cooling increases.  
Lowest Total  
Cost of Ownership:  
Operates with the energy-efficient  
Liebert XDP-W coolant pumping  
unit, which can support up to 12  
XDR-W modules.  
Saves energy by cooling at  
the heat source.  
Ideally Suited For:  
Applications where a hot aisle/cold  
aisle approach is not practical.  
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