Bryant 579F User Manual page 267

581A240 (20 TONS) (High Heat Units)*
Airflow
0.2
(Cfm)
Rpm Bhp
3,500 652 1123
4,000 725 1479
4,500 800 1897
5,000 875 2383
5,500 952 2937
6,000 1029 3249
6,500 1106 4061
7,000 1184 5003
7,500 1262 6083
8,000 1341 7312
8,500 — —
9,000 — —
9,500 — —
10,000 — —
581A240 (20 TONS) (High Heat Units)* (cont)
Airflow
1.2
(Cfm)
Rpm Bhp
3,500 970 2213
4,000 1019 2393
4,500 1073 2920
5,000 1130 3537
5,500 1189 4257
6,000 1251 5086
6,500 1315 6035
7,000 1381 7114
7,500 — —
8,000 — —
8,500 — —
9,000 — —
9,500 — —
10,000 — —
LEGEND
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive ranges:
Low Range: 896-1227 (208/230 and 460-v), 873-1108 (575-v)
High Range: 1113-1414
All other rpms require field-supplied drive.
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
0.4
Watts Rpm Bhp Watts
1.29 726 1347 1.55
1.70 792 1716 1.97
2.18 861 2148 2.47
2.74 931 2645 3.04
3.38 1003 2883 3.32
3.74 1077 3605 4.15
4.67 1151 4445 5.11
5.75 1226 5414 6.23
7.00 1302 6522 7.50
8.41 1378 7779 8.95
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1.4
Watts Rpm Bhp Watts
2.55 1022 2203 2.53
2.75 1069 2673 3.07
3.36 1120 3226 3.71
4.07 1174 3870 4.45
4.90 1232 4614 5.31
5.85 1292 5469 6.29
6.94 1354 6446 7.41
8.18 — — —
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External Static Pressure (in. wg)
0.6
Rpm Bhp Watts
793 1567 1.80
854 1950 2.24
918 2395 2.75
984 2904 3.34 1035
1053 3217 3.70
1123 3966 4.56
1194 4834 5.56 1236
1266 5831 6.71 1306
1340 6967 8.01 1377
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External Static Pressure (in. wg)
1.6
Rpm Bhp Watts
1072 2464 2.83
1117 2959 3.40
1165 3537 4.07 1209
1218 4207 4.84 1259
1273 4977 5.72 1313
1331 5859 6.74 1369
1391 6861 7.89
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Refer to page 261 for general Fan Performance Data notes.
NOTE: Maximum continuous bhp is:
Low Range: 4.25 (208/230 and 460-v), 5.75 (575-v)
High Range: 5.75
267
0.8
Rpm Bhp Watts Rpm
856 1784 2.05 914
912 2182 2.51 967
972 2639 3.04 1024
2892 3.33 1083
1100 3558 4.09 1145
1167 4334 4.98 1210
5229 6.01 1276
6253 7.19 1344
7417 8.53 —
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1.8
Rpm Bhp Watts Rpm
1120 2730 3.14 1166
1163 3251 3.74 1207
3854 4.43 1252
4549 5.23 1300
5345 6.15 1352
6253 7.19 —
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1.0
Bhp Watts
2000 2.30
2412 2.77
2620 3.01
3212 3.69
3905 4.49
4707 5.41
5629 6.47
6681 7.68
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2.0
Bhp Watts
3002 3.45
3548 4.08
4176 4.80
4896 5.63
5719 6.58
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