Vertiv Liebert DSE, System Design And User Manual

Page: 41 / 120

8.2.3 Refrigerant Line Sizes and Equivalent Lengths
Model DA250
Equivalent Length Hot Gas Line, in. Liquid Line, in.
50 ft (15 m) 1-5/8 1-3/8
100 ft (30 m) 1-5/8 1-3/8
150 ft (45 m) 1-5/8* 1-3/8*
300 ft (91 m) 1-5/8* 1-3/8*
*The DA250 unit can be extended to a maximum 200-ft (61-m) linear or 300-ft (91-m) equivalent length.
Source: DPN000788 Rev. 13
Table 8.4 Recommended Refrigerant Line Sizes, OD Copper
NOTE: See the piping schematics for your system in Submittal Drawings on page 67. For installations
using pre-fabricated heat-rejection skids, included piping must be factored into total equivalent length
calculation. Please consult factory for details.
8.2.4 Refrigerant Charge Requirements for Air-cooled Systems
The following tables provide the refrigerant charge requirements for the Liebert® DSE, connected piping,
and condenser options.
System Type Model Outer Circuit, lb (kg) Inner Circuit, lb (kg)
Air-cooled DA250 25 (11.3) 25 (11.3)
*System Charge = indoor unit + MCV440 heat-rejection skid + refrigerant lines.
For system charges over 200 lb. (90.7 kg), consult your Vertiv representative.
See Table 12.2 on page 57 for the recommended oil for the system.
Source: DPN003950 Rev. 3
Table 8.5 Indoor Unit Approximate Refrigerant Charge for R-410A Per Circuit
Standard Condenser Model
Per circuit,
lb (kg)
MCV440 40 (18.14)
Condenser charge includes receivers and Liebert® EconoPhase pump module.
Table 8.6 MCV440 Heat-rejection Skid Refrigerant Charge for R-410A Per Circuit Including PRE
Line Size, O.D., in. Liquid Line Hot Gas Line
1-3/8 51.5 (23.5) 5.9 (2.7)
1-5/8 — 8.4 (3.7)
Source: DPN003099, Rev. 1
Table 8.7 Interconnecting Piping Refrigerant Charge for R-410A, lb per 100 ft (kg per 30 m)
8 Piping and Refrigerant Requirements 41