5.1.2 Refrigerant Charge Requirements
Heat Rejection Skid System No. Circuit Number Charge per Circuit with or without Receivers lb. (kg)
MCV330 Single skid with (1) PRE unit 1
1
52
(24.6)
2
MCV430 and MCV440 Single skid with (1) PRE unit 1
1
62
(28.1)
2
MCV330 Dual skid with (2) PRE units
1
1
52
(24.6)
2
2
1
2
MCV430 and MCV440 Dual Skid with (2) PRE units
1
1
62
(28.1)
2
2
1
2
*The heat rejection skid contains:
• Liebert® MCV condensers
• Liebert® DSE receivers, when used with a DA125 through DA250 system
• Liebert® EconoPhase (PRE) units, and all internal piping
Liebert® DSE receivers are not used with a DA265 system.
Table 5.6 Approximate R-410A Refrigerant Required per Circuit for Vertiv™ Liebert® MCV Heat Rejection Skid
5.1.3 Additional Oil Requirements
Refer to the indoor unit's Installer/User Guide to determine if additional oil is required for each circuit. The need for additional
oil is affected by compressor type, piping lengths, receiver, and total refrigerant charge.
5.2 System Dehydration/Leak Test
Refer to the indoor unit's Installer/User Guide for the leak check and evacuation procedures for the entire thermal-
management system. Refer to the section that refers to the winter control system used on the condenser.
5.3 Charging for Condensers
Refer to the Liebert® DSE Installer/User Guide for the leak check and evacuation procedures for the entire thermal-
management system.
20 Proprietary and Confidential ©2024 Vertiv Group Corp. 5 Piping
Vertiv™ Liebert® MCV Installer/User Guide
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