Vertiv Liebert XD Series, System Design Manual

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Figure 3.4 Liebert XDO spacing—horizontal (side view)
3.8.2 Determining Vertical Placement of Liebert XDOs Above the Cold Aisle
In the maximum density configuration, Vertiv recommends placing the Liebert XDOs between 18 and 24
inches (457-609mm) above the equipment cabinets. In some cases where the required density is less, the
front-to-rear spacing of Liebert XDOs in a row will be increased. To ensure coverage of the wider spaces
between the Liebert XDO modules, the vertical distance between the cabinets and the Liebert XDOs
should be increased. However, the recommended maximum height of the Liebert XDO above the cabinets
is 30 inches (762mm). See Figure 3.5 on the next page.
Vertiv | Liebert® Xtreme Density™ System Design Manual | 29