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process applications. Refer to application information in Prod-
uct Data literature for details.
FLOW RATE REQUIREMENTS — Standard chillers should
be applied with nominal flow rates within those listed in the
Evaporator and Condenser Flow Rates table. Higher or lower
flow rates are permissible to obtain lower or higher tempera-
ture rises. Minimum flow rates must be exceeded to assure
turbulent flow and proper heat transfer in the cooler. See Table
36. See Fig. 27-37 for cooler pressure drop curves.
Consult application data section in the Product Data
literature and job design requirements to determine flow rate
requirements for a particular installation.
Table 36 — Evaporator and Condenser Flow Rates
*Maximum condenser fluid temperature shown for standard condensing
option. High condensing or heat machine option may have leaving fluid tem-
peratures up to 140 F (60 C) and entering up to 128 F (53.3 C).
CAUTION
Operation below minimum flow rate could generate
alarms, which could result in damage to the cooler.
30XW UNIT
EVAPORATOR CONDENSER NOMINAL
Leaving Fluid/Entering Fluid Leaving Fluid/Entering Fluid
Evaporator Condenser
Minimum Maximum Minimum Maximum*
40 F (4.4 C)/
45 F (7.2 C)
60 F (15.6 C)/
70 F (21.1 C)
70 F (21.1 C)/
65 F (18.3 C)
118 F (47.8 C)/
110 F (43.3 C)
Minimum
Flow Rate
Maximum
Flow Rate
Minimum
Flow Rate
Maximum
Flow Rate
Nominal
Flow Rate
Nominal
Flow Rate
GPM L/s GPM L/s GPM L/s GPM L/s GPM L/s GPM L/s
150
Two pass 200 12.6 720 45.4 240 15.1 960 60.6 384 24.2 480 30.3
One pass 384 24.2 1520 95.9 480 30.3 1600 100.9 384 24.2 480 30.3
Three pass 1207.648030.3————38424.2——
175
Two pass 213 13.4 765 48.3 255 16.1 1020 64.4 408 25.7 510 32.2
One pass 408 25.7 1615 101.9 510 32.2 1700 107.3 408 25.7 510 32.2
Three pass 1288.051032.2————40825.7——
200
Two pass 241 15.2 869 54.8 290 18.3 1158 731.0 463 29.2 579 36.5
One pass 463 29.2 1834 115.7 579 36.5 1930 121.8 463 29.2 579 36.5
Three pass 1459.157936.5————46329.2——
325
Two pass 403 25.4 1149 91.4 483 30.5 1932 121.9 773 48.8 966 60.9
One pass 773 48.8 3059 193.0 966 60.9 3220 203.2 773 48.8 966 60.9
Three pass 24215.296660.9————77348.8——
350
Two pass 429 27.0 1544 97.4 515 32.5 2058 129.8 823 51.9 1029 64.9
One pass 823 51.9 3259 205.6 1029 64.9 3430 216.4 823 51.9 1029 64.9
Three pass 257 16.2 1029 64.9 ————82351.9——
400
Two pass 481 30.4 1733 109.3 578 36.4 2310 145.7 924 58.3 1155 72.9
One pass 924 58.3 3658 230.8 1155 72.9 3850 242.9 924 58.3 1155 72.9
Three pass 289 18.2 1155 72.9 ————92458.3——
Fig. 27 — 30XW150-200 Evaporator Marine Waterbox
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
(0)
(14.9)
(29.8)
(44.8)
(59.7)
(74.6)
(89.5)
(104.4)
(119.4)
ft wg(kPa)
0 500 1000 1500 2000 gpm
(0) (31.5) (63.1) (94.6) (126.2) (L/s)
Evaporator Flow Rate
Pressure Drop
3 pass
2 pass
1 pass
a30-4833
NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over
the entire range of evaporator water flow rates represented.