Piping materials
Do not use the following interconnecting piping materials in a closed water system:
•Oxidizing biocides
•Aluminum components
•Brass components with high levels of zinc
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Water precautions
Take the following precautions before installation of the HP POD:
•Verify that all foreign matter and particulates are flushed from the system. Water might be discolored during the initial flushing of the system. Clear running water is the sign that all foreign matter and particulates have been flushed from the system.
•Evaluate the
•Ensure that the chilled water loop is properly designed for liquid cooling systems and is separate from the sanitary water systems in your building (bathroom, sink, drinking water).
•Ensure facility managers are aware of the additional load being added to the chilled water supply of the building. Be aware that the added heat load might affect other components being cooled by the chilled water plant.
Condensation management
CAUTION: During operation, avoid leaving the HP POD doors open, to maintain accurate environmental conditions inside the HP POD.
Supply cooling water that is above the dew point inside the HP POD to prevent condensation forming on the heat exchangers.
The heat exchanger drip tray will collect any condensation that forms on the heat exchangers. This collected condensate drains out of the HP POD through the heat exchanger condensate drains. HP recommends connecting condensate drains on the HP POD to a facility drain to prevent collection of water near the HP POD.
There is one heat exchanger condensate drain outlet located near the bottom of the HP POD in between the access doors on the hot aisle side. There are three drains for the water main supply and return lines located near the bottom of the HP POD on the cold aisle side.
To avoid excessive buildup of condensate and to conserve energy, raise the cooling water temperature to above the dew point to manage condensation while maintaining the necessary cooling capacity.
Water quality requirements 16