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flow rate is required, an accurate flow meter must be
installed in the system.
Chilled Water System Volume
Minimum system volume requirements are indicated in
Figure 4, p.
25. Special applications may deviate from these
numbers as directed by Trane engineering. Operation below
these volumes will cause unacceptable system control
problems and the potential for evaporator failure.
Figure 13. Evaporator pressure drop
40.00
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
0.00
CG-SVX044F-EN
Evaporator Flow vs Pressure Drop
50.00
100.00
Flowrate (gpm)
CICD030
CICD045
Table 4.
Minimum required system volumes
Unit Size (tons)
20
30
45
55
65
75
85
Pressure Drop Curves
150.00
200.00
CICD055
CICD065
Installation Mechanical
Volume (gal)
144
216
324
396
468
540
612
16.00
14.00
12.00
10.00
8.00
6.00
4.00
2.00
0.00
250.00
CICD075
25
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