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PERFORMANCE DATA (cont)
FAN PERFORMANCE — 579F180-300 UNITS (cont)
579F300 (25 TONS)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 0.9 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
7,500 962 3.39 3123 1039 3.81 3507 1111 4.23 3895 1179 4.66 4295 1212 4.89 4503 1245 5.11 4710
8,000 1017 4.04 3717 1091 4.48 4126 1160 4.93 4536 1225 5.38 4954 1256 5.62 5170 1287 5.85 5386
8,500 1072 4.76 4385 1143 5.23 4818 1209 5.70 5250 1271 6.18 5688 1302 6.42 5913 1332 6.66 6137
9,000 1128 5.57 5129 1196 6.07 5587 1260 6.56 6042 1320 7.06 6501 1348 7.32 6735 1377 7.57 6968
9,500 1185 6.47 5955 1250 6.99 6437 1311 7.51 6915 1369 8.03 7395 1396 8.30 7638 1424 8.56 7881
10,000 1241 7.45 6865 1304 8.00 7372 1363 8.55 7873 1419 9.09 8376 1445 9.37 8629 1472 9.64 8882
10,500 1298 8.54 7865 1359 9.12 8396 1415 9.69 8921 1469 10.26 9446 1495 10.55 9710 1521 10.83 9973
11,000 1355 9.72 8956 1414 10.33 9512 1469 10.93 10,062 1521 11.52 10,609 — — — — — —
11,250 1384 10.36 9540 1441 10.97 10,107 1495 11.58 10,668 — — — — — — — — —
579F300 (25 TONS)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.3 1.4 1.6 1.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
7,500 1309 5.58 5143 1341 5.83 5370 1372 6.08 5597 1434 6.59 6067 1494 7.12 6558
8,000 1349 6.33 5833 1379 6.59 6065 1409 6.84 6297 1467 7.36 6779 — — —
8,500 1390 7.17 6600 1419 7.43 6839 1447 7.68 7077 1504 8.22 7571 — — —
9,000 1433 8.08 7446 1461 8.35 7692 1488 8.62 7938 — — — — — —
9,500 1478 9.10 8378 1505 9.37 8626 — — — — — — — — —
10,000 1524 10.20 9396 1550 10.48 9653 — — — — — — — — —
10,500 ———————————————
11,000 ———————————————
11,250 ———————————————
LEGEND
Bhp — Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Standard low-medium static motor drive range is 1066 to 1283 rpm. Al-
ternate high static motor drive range is 1332 to 1550 rpm. Other rpms
require a field-supplied drive.
NOTES:
1. Static pressure losses (i.e., economizer) must be added to exter-
nal static pressure before entering Fan Performance table. See
Accessory/FIOP Static Pressure table on page 52 for more
information.
2. Interpolation is permissible. Do not extrapolate.
3. Fan performance is based on wet coils, clean filters, and casing
losses.
4. Maximum continuous bhp is 10.2 for 208/230-v units and 11.8 for
460-v units. The maximum continuous watts are 9510 for the 208/
230-v units and 11,000 for the 460-v units. Extensive motor and drive
testing on these units ensures that the full horsepower range of the
motor can be utilized with confidence. Using your fan motors up to
the watts rating shown will not result in nuisance tripping or prema-
ture motor failure. Unit warranty will not be affected.
5. Deduct 0.3 in. wg static pressure for high heat units at or above
10,000 cfm.
50