Specifications

Designing a Liebert XD Solution

Different types of Liebert XD cooling modules may be connected to the same Liebert XDP or Liebert

XDC as long as the sum of their cooling capacity does not exceed the supporting Liebert XDP’s or Lie-

bert XDC’s model size number.

Example

Continuing the example in 3.3 - Selecting Liebert XD Cooling Modules, the Liebert XD solution

in that example consisted of:

• Three (3) Liebert XDPs and

• 12 Liebert XDV10s

and any of the following:

• 13 Liebert XDH20s

• 12 Liebert XDO20s

• 15 Liebert XDR20s

1. Using the Liebert XDH20 to continue with the example, the Liebert XD systems could be

populated so that the modules were on dedicated Liebert XDPs.

2. Another possibility would be to mix the Liebert modules in a manner that allows each Liebert

XDP to have similar loads.

* Note: An individual Liebert XDP160 or Liebert XDC160 can remove up to 160kW. The 160kW

can be removed by the various modules, whose individual capacities may vary based on the

data center conditions, such as the entering air temperatures or entering refrigerant

temperature. For the Liebert XD system examples above, additional modules may be added as

heat loads increase until the 160kW maximum is reached. The Liebert XDP 3 in the example in

Table 4, which has a load of 130kW, could accept modules that would remove 30kW: one

Liebert XDH20 and one Liebert XDV10.

Table 3 Sample Liebert XD coolant supply loop connections

Liebert XD Loop Liebert XDH20 Liebert XDV10

Maximum Loop

Load, kW

Liebert XDP 1 7 units 0 units 154

Liebert XDP 2 6 units 0 units 132

Liebert XDP 3 0 units 12 unit 120

Table 4 Sample Liebert XD coolant supply loop connections, balanced loads

Liebert XD Loop Liebert XDH20 Liebert XDV10

Applied System

Load, kW*

Liebert XDP 1 4 units 5 units 138

Liebert XDP 2 4 units 5 units 138

Liebert XDP 3 5 units 2 unit 130