CGWF-SVX01A-EN 29
Installation Mechanical
Unit Piping
General Water Piping Recommendations
Make water piping connections to evaporator and condenser(s). Isolate and support
piping to prevent stress on the unit. Use flanged ells or spool-pieces to facilitate
service procedures. Construct piping according to local and national codes. Insulate
and flush piping before connecting to unit.
CAUTION
Equipment Damage!
To prevent equipment damage, bypass the unit if using an acidic
flushing agent.
Use a pipe sealant or teflon tape on all water connections. Minimize heat gain and
prevent condensation by insulating all chilled water piping.
CAUTION
Piping Damage!
To prevent damage to water piping, do not over-tighten connections.
Water System
Water Flow Rates
Establish balanced water flow through both the evaporator and condenser. Flow rates
should fall between the minimum and maximum values given inTable 3 and Table 4.
Flow rates above or below these values can cause equipment damage or improper
unit operation.
Pressure Drop Measurement
Measure evaporator water pressure drop at the pressure gauge(s) on the system
water piping. Readings should approximate those shown by the pressure drop charts
in Figure 12 and Figure 13.
Note: Evaporator pressure drop is an approximation and is to be used as a tool to
estimate flow rate and as an aid to waterside system piping design. If an accurate
measurement of flow rate is required, an accurate flow meter must be installed in the
system.
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