Piping
Figure 15 Hard pipe connection diagram
Return Main (seen from end )
or 
Acceptable 
Arc
7/8” Refrigerant
Recommended Arc
Supply Main
(seen from end )
or
1/2” Refrigerant
Field- Installed
Refer to Table 1 for details.
Copper Tubing
Total length of each line from Liebert XDR to Main not to exceed 72" (1829 mm)
Return from 
Cooling Module
Top of
Liebert XDR
and
Equipment
Rack
Supply
to Cooling
Module
Rear of
Equipment Rack
6.6.1Leak-Checking and Evacuation
Refer to the Liebert XDC or Liebert XDP user manual for procedures for evacuation, leak check, charging and startup.
6.6.2Header System
The Liebert XDR module system with optional flexible piping requires use of the Liebert XD prefabri- cated piping assembly. The prefabricated piping is compatible with the Liebert XD Flex Pipe required to attach to the Liebert XDR modules. For the details on piping connection locations, see Figure 14.
For additional information, refer to the Liebert
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