Vertiv Liebert XD Series, System Design Manual

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Description
Liebert XDV Liebert XDCF
Liebert
XDO
Liebert XDH Liebert XDR
One-Shot
Couplings Removable
Couplings One-Shot
Coupling One-Shot
Coupling One-Shot
Coupling Removable
Couplings One-Shot
Coupling Removable
Couplings
10ft long
(10m),
0º
186568G2 187867G2
186568G2 3
186566G2
2 x
186566G2 2 x
187865G2
186566G2 187865G2
10ft long
(10m),
90º
186567G2 187866G2 — 186565G2
2 x
186565G2 2 x
187864G2
186565G2 187864G2
Min Bend
Radius,
Supply
1
7"
(178mm)
7" (178mm) 7" (178mm)
7"
(178mm) 7"
(178mm)
7" (178mm)
7"
(178mm)
7" (178mm)
Min Bend
Radius,
Return
1
8" (203mm) 9" (229mm)
1. The minimum bend radius is for the flexible portion of the Liebert XD Flex Pipe. Because a section of hard pipe is at each end of the
Liebert XD Flex Pipe, the minimum bend radius can be larger.
2. Top Module
3. Bottom Module
Table 3.13 Liebert XD Flex Pipe assemblies, supply and return (continued)
3.22 Liebert XD Refrigerant
The refrigerant used in the Liebert XD system is HFC-134a (1,1,1,2-tetrafluoroethane), made by a number
of manufacturers. The amount of refrigerant used by the Liebert XD system may be significantly higher
than in typical DX cooling systems.
NOTICE
Risk of improper oil use. Can cause equipment damage.
The Liebert XD pumped R-134a refrigerant circuits do not use refrigerant oil. Do NOT put oil in the R-134a
system.
All the major components of a Liebert XD system must be installed in a space with a volume of at least
1,000 ft3 (28.3m3) for each 13 pounds of refrigerant in that system from ANSI/ASHRAE Standard 34-2007,
Designation and Safety Classification of Refrigerant
If the Liebert XDP/Liebert XDC is placed in a separate
area, such as a machine room, then this area must also meet the volume requirement. Inside the critical
space, this includes the space under the raised floor, and the space between the top of the raised floor
and the bottom of a suspended ceiling. If the suspended ceiling is all open grates, then this additional
space, up to the overhead deck, would also be included.
Example
A space is 5,000 square feet, with an 18" raised floor and an 8' 6" suspended ceiling. Liebert XDOs and a
Liebert XDP are to be placed in this raised-floor area.
The volume of the space is (1.5 + 8.5) x 5,000 or 50,000 cubic feet.
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