CG-SVX17D-EN 145
Pre-Start Checkout
Water System
Flow Rates
NOTICE:
Equipment Failure!
Establish a balanced chilled water flow through the evaporator. The flow rates should fall
between theminimum and maximum values. Flow rates outside the recommended range could
cause evaporator failure.
Establish a balanced chilled water flow through the evaporator. The flow rates should fall between
the minimum and maximum values. Chilled water flow rates below the minimum values will result
in laminar flow, which reduces heat transfer and causes either loss of EXV control or repeated
nuisance, low temperature cutouts. Flow rates that are too high can cause tube erosion.
Pressure Drop
Measure water pressure drop through the evaporator at the field-installed pressure taps on the
system water piping. Use the same gauge for each measurement. Measure flow at the field-
installed supply and return. This will include valves, strainers, and fittings in the pressure drop
readings.
Pressure drop readings should be approximately those shown in the Pressure Drop Charts in the
Installation-Mechanical section.
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