•The water source should be shared water or dedicated facility water loop.
•Maximum and minimum temperatures of building chilled water plant, and target chilled water temperature of dedicated loop, should be based on the total cooling capacity required and planned.
•The viscosity of the chilled liquid, combined with the length and elevation changes in piping determined by selected route, can affect pipe size selection.
For the MCS-200/100, HP recommends using a water source that is a dedicated chiller unit or water-to-water heat exchanger that enables line isolation, better control of individual systems, and regulated water quality. The chilled water source for this loop is provided by one or more chiller systems. Advantages of using a dedicated loop include the following:
•Easier scheduling of maintenance to either a building system or dedicated MCS-200/100 loop
•Easier maintenance of water quality parameters in the dedicated closed loop
•Better temperature and flow regulation to guarantee the needs of the MCS-200/100
•More flexibility to regulate water temperature in order to reduce the potential for condensation
The use of building-chilled water for the MCS-200/100 unit is possible under certain conditions. Consult with a qualified facilities design expert, however, to determine whether this approach is possible within your specific data center. Refer to the requirements for water quality, temperature, and flow rate described in this section. Regardless of chilled water service approach, consult with a qualified facilities design expert to analyze new and existing systems and specify new work to be sure that water quality, temperature, and water flow requirements can be met. The new work must meet all local safety and building code requirements as well as your facility quality standards. Piping drawings and schematics included here are diagrammatic to convey a conceptual understanding of the MCS-200/100 connection requirements.
Dedicated chiller unit directly supplying the MCS-200/100
Plumbing considerations
When installing the MCS-200/100, consider the following plumbing factors:
•Installing water shut off valves to enable infrastructure system flushing for the inlet and outlet of each MCS-200/100 (highly recommended by HP)
Facility planning for implementation 46
