Technical Specifications

Designing a Liebert XD Solution

3.7 Liebert XDH Placement

The free-standing Liebert XDH cooling module is best placed among the equipment cabinets in a

hot aisle-cold aisle arrangement (see Figure 15). The Liebert XDH draws in air from the hot aisle,

cools it and discharges the cooled air into the cold aisle where it is drawn into the equipment cabinets.

Even spacing aids in optimizing cooling.

Liebert XDH modules should be placed among the cabinets that generate the greatest amount of heat.

If heat loads are dispersed evenly throughout the room, the Liebert XDH modules may be spread out

accordingly. Bi-directional air diffusers should be used on Liebert XDH modules installed between

racks.

If a Liebert XDH is installed at the end of a row, uni-directional air diffusers should be used on that

Liebert XDH. The uni-directional diffusers can be used for left or right air discharge by removing

them from the Liebert XDH, turning them 180 degrees, then reattaching them to the Liebert XDH.

Figure 15 Liebert XDH placement (top view)

Hot

Aisle

Cold

Aisle

Hot

Aisle

Cold

Aisle

Liebert XDH