Vertiv CoolPhase CDU - Determining Cooling Equipment Needs

The advanced control enables users to monitor essentially all aspects of the Vertiv™ CoolPhase CDU system from operating
status to maintenance. Please refer to the Liebert® iCOM™ Installer User Guide for the CoolPhase CDU.
2.2.2 Determining Cooling Equipment Needs
In order to determine cooling equipment needs, the following questions need to be considered.
1. Site must have humidity control and filtration.
2. Site must have a vapor barrier.
3. Engineer of record to determine indoor unit, condenser location, and service access.
4. What is the server load in each cabinet going to be?
5. What is the maximum distance between the Vertiv™ CoolPhase CDU unit and the farthest heat load (rear door or
direct chip server cabinet) in the proposed layout? Look at the pump chart drawing.
6. Is the piping sized so that the available CoolPhase CDU pump head pressure is sufficient for this run?
• Refer to the pump curve drawing in Submittal Drawings on page107 .
7. Engineer of record is responsible to determine if the items listed below are required for the secondary fluid
circuit:
a. Before running the whole system, the following tasks must be completed.
• Acquire water load banks and thermal reserve tank and fill station.
• Clean /flush all external supplied components.
• Thermal reserve tank must be free of any oil or material contamination before
installation.
• Fill station must be free of any oil or material contamination before installation.
• Water load banks connect to external pump and filter station before placing them into
the CoolPhase CDU secondary circuit.
• When cleaning the water load bank, set the flow rate to match the system.
• A external filter station must be used to capture/remove contamination from the water load
banks.
• Load banks must be flushed in steps (50µm, 10µm and 5µm) to remove contamination inside
the water load banks.
b. Install thermal reserve tank, fill station, and external water load bank into the secondary fluid circuit row
manifold.
c. Secondary fluid circuit must have a strainer in the cooling loop to protect the IT equipment and CoolPhase
CDU brazed plate heat exchanger.
d. Install air vents in the secondary fluid circuit to remove air from the cooling loop.
e. Isolation valves at CDU and the supply and return connection to the heat load.
f. External fluid leak detection device is placed alongside the secondary fluid row manifold.
g. Secondary fluid coolant contains biocide and corrosion inhibitors.
h. Use the fill station to fill the secondary system.
i. Secondary fluid circuit has been flushed multiple times before installing/connecting IT equipment into the
cooling loop.
• Flush the secondary fluid circuit per Secondary Fluid Circuit Requirements on page61 .
14 Proprietary and Confidential ©2024 Vertiv Group Corp. 2 Nomenclature and Components
Vertiv™ CoolPhase CDU Installer/User Guide