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19 illustrate the use of circuit setters to adjust the flow rate to each heat exchanger. Other methods, such
as inline or external flowmeters, can provide a more accurate method for setting the flow rate through the
individual shutoff valves.
• Design the flow loop to minimize the total pressure drop within the flow loop. The Optional Low
Impedance Quick Connect feature (shown in Figure 5 on page 16 through Figure 8 on page 19) cannot be
the Parker quick-connect couplings that are used on the heat exchanger because of the excessive
pressure drop associated with flowing through four quick-connect pairs in series. These must be very low,
near 0, flow impedance quick connects. Alternatively, these quick connects can be eliminated and
replaced with a hose barb connection.
Following are some examples of the most common solutions.
• Primary and secondary cooling loops
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ThinkSystem Heavy Duty Full Depth 48U Rack Cabinet User Guide
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