48
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
120
7.6
480
30.3
—
—
—
—
384
24.2
—
—
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
128
8.0
510
32.2
—
—
—
—
408
25.7
—
—
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
145
9.1
579
36.5
—
—
—
—
463
29.2
—
—
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
242
15.2
966
60.9
—
—
—
—
773
48.8
—
—
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
—
—
—
—
823
51.9
—
—
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
—
—
—
—
924
58.3
—
—
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.