Vertiv Liebert XD Series, System Design Manual

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Figure 3.24 Efficient piping layout—avoid “bull head T” connections
3.20 Piping Installation Method Prefabricated Headers
The assembly and connection means used for piping in the Liebert XD system are similar to those used
for conventional refrigeration systems. All piping should be installed with high-temperature brazed joints.
Soft solder is not recommended. During brazing, the lines must be filled with flowing dry nitrogen to
prevent excessive oxidation and scale formation inside the piping. Prevailing good refrigeration practices
must be employed for piping supports, leak testing, dehydration and charging. Failure to use good system
practices may result in damage to the system. Refer to the ASHRAE refrigeration handbook for general
good-practice refrigeration piping.
Follow all guidelines in
Liebert XD Piping System Design on page 38 and Liebert XD Piping Slope on
page 40 during installation.
Vertiv | Liebert® Xtreme Density™ System Design Manual | 47