25
4.8 Oil Cooler Sizing
An oil cooler is required for all LT and MT applications
using R-404A, R-407A, R-407C, R-407F, and R-507A,
and may be required for R-134a, depending on the
operating condition. Size the oil cooler by using Oil Cool-
ing Load featured in the Carwin software (see Fig. 17 and
Table 9 below).
Fig. 17 — Carwin Software Interface Display
Table 9 — Available Oil Cooler Models
* Maximum number of compressors based on oil cooler pressure drop of less than 6 PSID (0.41 bar).
FAN SPEED PART NUMBERS
OIL COOLING CAPACITY AT AMBIENT AIR TEMPERATURE
95°F (35°C) 100°F (38°C) 105°F (41°C) 110°F (43°C)
50 Hz
KH51ZZ181
(2 Compressors Max)*
32,200 Btu/Hr
(9,405 W/Hr)
28,800 Btu/Hr
(9,435 W/Hr)
27,300 Btu/Hr
(8,438 W/Hr)
25,900 Btu/Hr
(7,999 W/Hr)
KH51ZZ182
(3 Compressors Max)*
63,700 Btu/Hr
(18,664 W/Hr)
60,600 Btu/Hr
(17,756 W/Hr)
57,600 Btu/Hr
(16,877 W/Hr)
54,600 Btu/Hr
(15,998 W/Hr)
KH51ZZ183
(4 Compressors Max)*
94,900 Btu/Hr
(27,805 W/Hr)
90,400
Btu/Hr
(26,487 W/Hr)
85,900 Btu/Hr
(25,168 W/Hr)
81,400 Btu/Hr
(23,850 W/Hr)
KH51ZZ184
(5 Compressors Max)*
123,400 Btu/Hr
(26,156 W/Hr)
117,500 Btu/Hr
(34,427 W/Hr)
111,600 Btu/Hr
(32,699 W/Hr)
105,800 Btu/Hr
(30,999 W/Hr)
60 Hz
KH51ZZ181
(2 Compressors Max)*
32,100 Btu/Hr
(9,405 W/Hr)
30,600 Btu/Hr
(8,966 W/Hr)
29,000 Btu/Hr
(8,497 W/Hr)
27,600 Btu/Hr
(8,087 W/Hr)
KH51ZZ182
(3 Compressors Max)*
69,100 Btu/Hr
(20,246 W/Hr)
65
,700 Btu/Hr
(19,250 W/Hr)
62,400 Btu/Hr
(18,283 W/Hr)
59,100 Btu/Hr
(17,316 W/Hr)
KH51ZZ183
(4 Compressors Max)*
102,600 Btu/Hr
(30,061 W/Hr)
97,700 Btu/Hr
(28,626 W/Hr)
92,800 Btu/Hr
(27,190 W/Hr)
87,900 Btu/Hr
(25,755 W/Hr)
KH51ZZ184
(5 Compressors Max)*
134,100 Btu/Hr
(39,291 W/Hr)
127,700 Btu/Hr
(37,416 W/Hr)
121,300 Btu/Hr
(35,541 W/Hr)
114,900 Btu/Hr
(33,665 W/Hr)