IOM 1322 • WATER-COOLED SCROLL COMPRESSOR 18 www.DaikinApplied.com
Water Pressure Drop
Water ow rates should be maintained as closely as possible to job design values. The vessel ow rates must fall between the
minimum and maximum values shown on the appropriate evaporator and condenser curves. Measure the water pressure drop
through the vessels at eld-installed pressure taps and check the ow rate using the following tables. Do not include valves or
strainers in these readings.
The evaporator ow rates and pressure drops shown on the following page are for full load design purposes. The maximum ow
rate and pressure drop are based on a 6-degree temperature drop. Avoid higher ow rates with resulting lower temperature drops
to prevent potential control problems resulting from very small control bands and limited start up/shut o temperature changes.
The minimum ow and pressure drop is based on a full load evaporator temperature drop of 16-degrees.
Figure 10: WGZ-D Condenser Pressure Drop Curves
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