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Water precautions
Take the following precautions during the installation of the HPE Adaptive Rack Cooling System:
•
Before installing the HPE Adaptive Rack Cooling System Hook-Up Kit, ensure that all foreign matter
and particulates are flushed from the system.
•
Evaluate the short-term and long-term system requirements against the available water capacity.
•
Ensure that the chilled water loop is properly designed for liquid cooling systems and is separate from
the sanitary water systems, such as sink and drinking water, in your building.
•
Ensure that facility managers understand the additional load being added to the chilled water supply of
the building. The added heat load might affect other components cooled by the chilled water plant.
Plumbing materials to avoid
Hewlett Packard Enterprise recommends avoiding the following materials in a closed water system.
•
Oxidizing biocides
•
Aluminum components
•
Brass components with high levels of zinc
Leveling requirements
Use the leveling feet to adjust the height of the individual racks to match neighboring racks. Use the
leveling pads for weight distribution. Be sure that the weight is distributed evenly and the rack holes align.
Condensation management
The HPE Adaptive Rack Cooling System and CDU rack drain pans collect any condensation that forms.
When the specified condensation level in the condensation tray is reached, a sensor activates a pump
that pumps the condensation from the drain pan. A further discharge tube runs out of the system from
condensation tray to drain any excess fluid. Connect these hoses to a collection system or an external
drain.
To ensure reliable drainage:
•
Ensure no kinks form in the drainage hose.
•
Do not reduce diameter of drainage hose.
•
Route the drainage hoses so that they always run downhill.
To avoid excessive buildup of condensate and to conserve energy, consider raising the cooling water
temperature to the necessary cooling capacity.
72
Water quality and leveling requirements and condensation management
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