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PERFORMANCE DATA (cont)
FAN PERFORMANCE — 579F180-300 UNITS (cont)
579F240 (20 TONS)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0 1.2
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
6000 767 1.80 1617 858 2.20 1932 944 2.50 2256 1026 2.90 2600 1104 3.30 2967 1181 3.80 3358
6500 817 2.20 1992 903 2.60 2329 985 3.00 2673 1062 3.40 3031 1136 3.80 3410 1209 4.30 3811
7000 869 2.70 2427 950 3.10 2787 1028 3.50 3151 1102 3.90 3527 1172 4.40 3919 1241 4.80 4331
7500 920 3.30 2919 998 3.70 3303 1073 4.10 3689 1143 4.60 4083 1210 5.00 4490 1275 5.50 4914
8000 973 3.90 3476 1047 4.30 3886 1119 4.80 4294 1186 5.30 4708 1250 5.70 5131 1313 6.20 5569
8500 1026 4.60 4102 1097 5.10 4635 1166 5.60 4967 1231 6.00 5401 1292 6.50 5843 1352 7.00 6297
9000 1079 5.40 4800 1147 5.90 5257 1214 6.40 5714 1276 6.90 6171 1336 7.40 6632 1393 7.90 7102
9500 1133 6.20 5576 1199 6.80 6058 1263 7.30 6540 1323 7.90 7018 1381 8.40 7500 1436 8.90 7988
10,000 1188 7.20 6432 1250 7.80 6939 1313 8.30 7444 1371 8.90 7946 1426 9.50 8449 — — —
579F240 (20 TONS)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.4 1.6 1.8 1.9 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
6000 1255 4.20 3772 1327 4.70 4206 1396 5.20 4658 1431 5.45 4884 1465 5.70 5110
6500 1279 4.70 4233 1348 5.20 4677 1415 5.80 5139 1449 6.10 5370 1482 6.40 5601
7000 1308 5.30 4762 1373 5.80 5215 1437 6.40 5686 1469 6.70 5922 1501 7.00 6157
7500 1339 6.00 5356 1401 6.50 5818 1462 7.00 6298 1493 7.25 6538 1523 7.50 6778
8000 1373 6.70 6024 1433 7.30 6495 1493 7.80 6966 1523 8.05 7202 — — —
8500 1410 7.60 6765 1467 8.10 7248 1524 8.70 7731 — — — — — —
9000 1449 8.50 7584 1503 9.00 8033 — — — — — — — — —
9500 1488 9.40 8403 — — — — — — — — — — — —
10,000 —— — —— — —— — —— — —— —
LEGEND
Bhp — Brake Horsepower Input to Fan
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Standard low-medium static motor drive range is 1002 to 1225 rpm. Al-
ternate high static motor drive range is 1193 to 1458 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. Maximum continuous bhp is 8.7 for 208/230-v units and 9.5 for 460-v
units. The maximum continuous watts are 7915 for the 208/230-v
units and 8640 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 premature
motor failure. Unit warranty will not be affected.
4. Deduct 0.2 in. wg static pressure for high heat units at or above
9000 cfm. Deduct 0.3 in. wg static pressure for high heat units at or
above 10,000 cfm.
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