Bryant 579F - Manual (Page 48)

AIR DELIVERY — 579F180-300 UNITS (cont)
579F300 (25 TON)
Airflow
(Cfm)
Standard Belt-Drive Motor
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 3,507 1111 4.23 3,895 1179 4.66 4,295 1212 4.89 4503 1245 5.11 4710
8,000 1017 4.04 3717 1091 4.48 4,126 1160 4.93 4,536 1225 5.38 4,954 1256 5.62 5170 1287 5.85 5386
8,500 1072 4.76 4385 1143 5.23 4,818 1209 5.70 5,250 1271 6.18 5,688 1302 6.42 5913 1332 6.66 6137
9,000 1128 5.57 5129 1196 6.07 5,587 1260 6.56 6,042 1320 7.06 6,501 1348 7.32 6735 1377 7.57 6968
9,500 1185 6.47 5955 1250 6.99 6,437 1311 7.51 6,915 1369 8.03 7,395 1396 8.30 7638 1424 8.56 7881
10,000 1241 7.45 6865 1304 8.00 7,372 1363 8.55 7,873 1419 9.09 8,376 1445 9.37 8629 1472 9.64 8882
10,500 1298 8.54 7865 1359 9.12 8,396 1415 9.69 8,921 1469 10.26 9,446 1495 10.55 9710 1521 10.83 9973
11,000 1355 9.72 8956 1414 10.33 9,512 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 TON) (cont)
Airflow
(Cfm)
Standard Belt-Drive Motor
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
Watts — Input Watts to Motor
NOTES:
1. Boldface indicates additional capability of the 460-v motor.
2. Factory shipped motor drive range is 1323 to 1579 rpm. Other rpms require a
field-supplied drive.
3. Static pressure losses (i.e., economizer) must be added to external static pres-
sure before entering Air Delivery table.
4. Interpolation is permissible. Do not extrapolate.
5. Fan performance is based on wet coils, clean filters, and casing losses.
6. Maximum continuous bhp is 10.2 for 208/230 and 575-v units and 11.8 for
460-v units. The maximum continuous watts are 9510 for the 208/230 and
575-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 premature motor failure. Unit warranty will not be
affected.
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