Vertiv Liebert XD Series, System Design Manual

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Additional field-supplied components, such as valves, expansion tank, strainers and flow or pressure
switches are also shown in Figure 6.12 below. These components are necessary and should be included
when designing a system with one indoor and one outdoor unit on a piping loop or a system using
multiple indoor and outdoor units on a common piping loop. Larger systems may also benefit from an air
separator (not shown). Refer to SL-10080, available at www.VertivCo.com for further details on required
components.
Figure 6.12 Typical piping arrangement for Liebert XDC and two DDNT880A
6.8 Site Considerations
The drycoolers and pumps should be installed in a location offering maximum security and access for
maintenance.
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