Emerson Liebert Xtreme Density - Manual (Page 53)

Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF
47
4.9 Liebert XD Piping Dimensions and Features
4.9.1 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 3.13 - Liebert XD Piping System Design and 3.14 - Liebert XD Piping
Slope during installation.
Figure 46 Two-port prefabricated piping for Liebert XD cooling modules
Table 18 Two-port prefabricated piping legend
Branch Piping Standard Run Long Run *
Two Port 185797G21 185800G21
Supply
inch (mm)
Outside Diameter (ODS) 1-1/8 1-3/8
Height (H) 8-3/4 (222) 8-3/4 (222)
Length (L) 6-3/4 (171) 6-7/8 (175)
Return
inch (mm)
Outside Diameter (ODR) 2-1/8 2-5/8
Height (H) 10-1/2 (267) 10-1/2 (267)
Length (L) 8-3/4 (222) 9-1/8 (232)
* Pipe runs greater than 60 equivalent feet
DPN000773
Page 1, Rev. 3
Return
Supply
Nominal
H
L
96"
(2438mm)
ODS
ODR
Ref. Typ.
Ref.
Typ.
48"
(1219mm) Ref. Typ.
8-5/16"
(211mm)
24"
(610mm)