Liebert manual Hanging Stacked Liebert XDVs from Unistruts

Mounting the Liebert XDV

5.3.1Hanging Stacked Liebert XDVs from Unistruts

Because the upper Liebert XDV in a stacked arrangement must be positioned farther forward than the lower Liebert XDV, two sets of Unistruts are required. The second set of Unistruts must be installed 9-7/8 inches (251mm) forward of the first set. This arrangement positions the stacked Lie- bert XDVs so that they meet the air-intake criteria shown in Figure 10 and Figure 17.

After installing the Unistruts at the proper location, hang the Liebert XDVs as outlined in 5.2.1 - Suspending the Liebert XDV from Unistruts.

Figure 18 Attach hanger brackets to Liebert XDV for stacked arrangement

Attach hanger brackets

to each corner of each Liebert XDV. This arrangement permits

mounting from either Unistruts or from overhead structure.

10 - 32 x 5/8" length; factory-supplied

1/4 - 20 x 5/8" length typical, 2; factory-supplied

10 - 32 x 5/8" length typical, 3; factory-supplied

Figure 19 Stacked Liebert XDVs suspended from Unistruts

Unistrut field-supplied upper Liebert XDV: 1

lower Liebert XDV: 2 Bolt 3/8"- 16, nut and washer factory-supplied

17