Table 21 — Marine Waterbox Cover Weights*
HEAT EXCHANGER
SIZE
DESIGN MAXIMUM WATER PRESSURE
COOLER
CONDENSER
psi
kPa
lb
kg
lb
kg
45 - 48
150
1034
2236
1015
1275
579
300
2068
3060
1389
1660
754
55 - 57
150
1034
—
—
1643
746
300
2068
—
—
2243
1018
*Heat exchangers with marine waterboxes have heavier dry and operating weights than heat exchangers
with nozzle-in-head waterboxes.
Table 22 — NIH Waterbox Cover Weights*
HEAT EXCHANGER
SIZE
PASSES
DESIGN MAXIMUM WATER PRESSURE
COOLER
CONDENSER
psi
kPa
lb
kg
lb
kg
45 - 48
1
150
1034
2997
1361
1735
788
300
2068
4225
1918
2510
1140
2†
150
1034
2984
1355
1885
856
300
2068
4188
1901
2590
1176
3
150
1034
3035
1378
1777
807
300
2068
4244
1927
2539
1153
55 - 57
1
150
1034
—
—
2032
923
300
2068
—
—
2940
1335
2†
150
1034
—
—
2649
1203
300
2068
—
—
3640
1653
3
150
1034
—
—
—
—
300
2068
—
—
—
—
NIH — Nozzle-in-Head
*The 150 psig (1034 kPa) waterbox cover weights are included in the dry weight shown in Table 15.
†Two different waterbox covers are present on 2-pass chillers. The weight shown in this table represents the
weight of the waterbox cover that contains the nozzles. A blank waterbox cover is also present on 2-pass
units. The weight of the blank waterbox cover is identical to the weight of the same size marine waterbox
cover. Refer to Table 21.
Table 23 — Approximate Refrigerant (HCFC-134a) Charge*
COOLER
SIZE
CONDENSER
SIZE
TOTAL CHILLER
CHARGE
lb
kg
45
45
4100
1860
46
47
55
4320
1960
56
57
46
45
4200
1905
46
47
55
4420
2005
56
57
47
45
4300
1950
46
47
55
4520
2050
56
57
48
45
4580
2077
46
47
55
4800
2177
56
57
*Total chiller refrigerant charge includes the cooler, condenser, and economizer charges.
NOTE: Regulations mandate that chiller shipping charge is limited to 7500 lb (3402 kg).
103