Bryant 579F User Manual page 265

581A240 (20 TONS) (Low Heat Units)*
Airflow
0.2
(Cfm)
Rpm Bhp
3,500 642 1082
4,000 714 1426
4,500 787 1831
5,000 862 2301
5,500 937 2838
6,000 1013 3113
6,500 1089 3893
7,000 1166 4798
7,500 1243 5837
8,000 1320 7017
8,500 1398 8350
9,000 — —
9,500 — —
10,000 — —
581A240 (20 TONS) (Low Heat Units)* (cont)
Airflow
1.2
(Cfm)
Rpm Bhp
3,500 955 2160
4,000 1004 2299
4,500 1056 2793
5,000 1112 3376
5,500 1171 4057
6,000 1232 4845
6,500 1295 5749
7,000 1360 6778
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
1.24 714 1296 1.49
1.64 780 1651 1.90
2.11 847 2067 2.38
2.65 917 2547 2.93
3.26 988 3094 3.56
3.58 1060 3445 3.96
4.48 1133 4250 4.89
5.52 1207 5181 5.96
6.71 1282 6244 7.18
8.07 1356 7450 8.57
9.60 — — —
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1.4
Watts Rpm Bhp Watts
2.48 1007 2142 2.46
2.64 1053 2578 2.96
3.21 1103 3093 3.56
3.88 1156 3699 4.25
4.67 1212 4402 5.06
5.57 1271 5213 6.00
6.61 1333 6141 7.06
7.80 1396 7193 8.27
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External Static Pressure (in. wg)
0.6
Rpm Bhp Watts
781 1510 1.74
841 1877 2.16
904 2303 2.65
969 2793 3.21 1019
1036 3067 3.53 1083
1105 3783 4.35
1175 4615 5.31 1216
1247 5570 6.41 1285
1319 6658 7.66 1355
1392 7890 9.08
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External Static Pressure (in. wg)
1.6
Rpm Bhp Watts
1056 2409 2.77
1100 2865 3.29
1147 3402 3.91
1199 4029 4.63 1240
1253 4754 5.47 1292
1310 5588 6.43 1348
1369 6538 7.52
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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
265
0.8
Rpm Bhp Watts Rpm
843 1726 1.98 901
898 2103 2.42 952
957 2540 2.92 1008
2755 3.17 1066
3390 3.90 1127
1149 4130 4.75 1191
4986 5.73 1256
5965 6.86 1323
7080 8.14 1391
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1.8
Rpm Bhp Watts Rpm
1104 2684 3.09 1149
1145 3160 3.63 1189
1191 3718 4.28 1233
4366 5.02 1280
5114 5.88 1331
5970 6.87 1384
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1.0
Bhp Watts
1943 2.23
2330 2.68
2501 2.88
3062 3.52
3719 4.28
4484 5.16
5364 6.17
6369 7.32
7507 8.63
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2.0
Bhp Watts
2968 3.41
3463 3.98
4041 4.65
4710 5.42
5480 6.30
6358 7.31
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