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Figure 7 - Condenser located below the unit
6.2.1
Equivalent line lenght
To determine the appropriate size for field installed liquid and discharge lines, it is first necessary to establish the
equivalent length of pipe for each line. The equivalent length is the actual friction loss from the linear run of pipe plus the
added friction loss of elbows, valves, etc. Table 2 shows the equivalent length of pipe for various nonferrous valves and
fittings. Follow these steps when calculating line size:
1. Start with an initial approximation of equivalent length by assuming that the equivalent length of pipe is 1.5
times the actual pipe length.
2. Refer to Tables 2 and 3 for a first approximation of line size.
3. Check the line size by calculating the actual equivalent length.
Note: When calculating the equivalent length, do not include piping of the chiller unit. Only field piping must be
considered.
Figure 8 - Equivalent lenghts (in meters)
