Technical Specifications

System Description
8
1.8 Liebert XDV—Vertical, Above-Cabinet Cooling Module
The Liebert XDV cooling system is designed to be attached to the top of a computer cabinet or rack
containing heat-dissipating equipment. Two fans draw hot air exhausted from the equipment or from
the hot aisle, pass it through a cooling coil and discharge cool air back down to the cold aisle, where
the equipment's air intake is located.
The Liebert XDV comes from the factory ready to draw heated air through a perforated grille on the
back of the module. The Liebert XDV is easily modified to draw hot air through the bottom of the
module, should that cooling method be better suited to your application.
Liebert XDV smart modules allow remote shutdown, fan failure alarms and automatically switching
the second fan On and Off. This saves energy by permitting the module to run with one fan and
switching on a second fan when the temperature requires both fans for cooling.
The Liebert XDV is available for hard-piped configurations or with Liebert XD Flex Pipes with quick-
connect couplings (one-shot or removable) for easy connection to the header system. The Liebert XDV
and flexible pipes are also available for shipment with a pre-charge of R134a. This option requires the
use of the one-shot flexible pipes
Figure 8
Top-mounted Liebert XDV modules with hard piping in hot aisle-cold aisle
arrangement
Figure 9 Top-mounted Liebert XDV modules with Liebert Flex Pipe in hot aisle-cold aisle
arrangement
Cold
Aisle
Cold
Aisle
Cold
Aisle
Hot
Aisle
Hot
Aisle
Cold
Aisle
Cold
Aisle
Hot
Aisle