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Table 26 — Fan Performance 581B060 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
0.2
CFM
Rpm
Bhp
1500
800
0.39
1600
839
0.46
1700
879
0.54
1800
919
0.63
1900
960
0.73
2000
1001
0.84
2100
1043
0.96
2200
1085
1.09
2300
1127
1.23
2400
1169
1.38
2500
1212
1.55
AIRFLOW
1.2
CFM
Rpm
Bhp
1500
1247
0.98
1600
1270
1.07
1700
1295
1.17
1800
1321
1.28
1900
1348
1.40
2000
1377
1.53
2100
1406
1.67
2200
1437
1.83
2300
1468
1.99
2400
1500
2.17
2500
1533
2.36
LEGEND
Bhp
— Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-
supplied drive.
Table 27 — Fan Performance 581B072 — Horizontal Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
0.2
CFM
Rpm
Bhp
1800
913
0.64
1900
952
0.73
2000
992
0.84
2100
1032
0.95
2200
1073
1.07
2300
1114
1.21
2400
1155
1.36
2500
1196
1.51
2600
1238
1.69
2700
1280
1.87
2800
1322
2.07
2900
1364
2.28
3000
—
—
AIRFLOW
1.2
CFM
Rpm
Bhp
1800
1322
1.56
1900
1351
1.68
2000
1380
1.82
2100
1411
1.97
2200
1441
2.13
2300
1473
2.30
2400
—
—
2500
—
—
2600
—
—
2700
—
—
2800
—
—
2900
—
—
3000
—
—
LEGEND
Bhp
— Brake Horsepower
Watts
— Input Watts to Motor
*Motor drive range: 1119 to 1585 rpm. All other rpms require field-
supplied drive.
EXTERNAL STATIC PRESSURE (in. wg)
0.4
Watts
Rpm
Bhp
Watts
350
904
0.49
438
412
938
0.57
505
483
974
0.65
580
561
1010
0.75
663
648
1047
0.85
754
744
1085
0.96
855
850
1123
1.09
965
966
1162
1.22
1086
1092
1201
1.37
1217
1229
1241
1.53
1359
1378
1281
1.70
1513
EXTERNAL STATIC PRESSURE (in. wg)
1.4
Watts
Rpm
Bhp
Watts
873
1320
1.13
1002
952
1342
1.22
1083
1040
1365
1.32
1173
1137
1390
1.43
1273
1243
1415
1.56
1381
1359
1442
1.69
1500
1485
1470
1.83
1629
1621
1499
1.99
1769
1769
1529
2.16
1920
1928
1559
2.35
2083
2098
1591
2.54
2257
EXTERNAL STATIC PRESSURE (in. wg)
0.4
Watts
Rpm
Bhp
Watts
569
1010
0.80
715
652
1046
0.91
805
744
1083
1.02
903
844
1120
1.14
1010
954
1158
1.27
1127
1074
1196
1.41
1254
1204
1234
1.57
1391
1345
1273
1.73
1538
1497
1312
1.91
1697
1660
1352
2.10
1867
1835
1392
2.31
2050
2023
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.4
Watts
Rpm
Bhp
Watts
1382
1388
1.77
1568
1495
1416
1.90
1686
1617
1444
2.04
1814
1748
1473
2.20
1950
1890
1503
2.36
2097
2041
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.6
Rpm
Bhp
Watts
Rpm
999
0.60
535
1087
1030
0.68
605
1115
1062
0.77
684
1144
1095
0.87
771
1174
1129
0.98
867
1206
1163
1.09
972
1238
1199
1.22
1086
1271
1235
1.36
1211
1305
1272
1.52
1347
1340
1310
1.68
1493
1375
1348
1.86
1652
1412
1.6
Rpm
Bhp
Watts
Rpm
1390
1.28
1137
1457
1411
1.37
1221
1476
1432
1.48
1313
1497
1455
1.59
1415
1518
1479
1.72
1526
1541
1505
1.86
1648
1565
1531
2.00
1780
1591
1559
2.16
1923
1617
1587
2.34
2077
1644
1616
2.53
2243
1672
1647
2.73
2421
—
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
3. See page 33 for general fan performance notes.
0.6
Rpm
Bhp
Watts
Rpm
1098
0.98
869
1178
1131
1.09
965
1210
1166
1.21
1070
1242
1200
1.33
1184
1275
1236
1.47
1307
1308
1272
1.62
1440
1343
1308
1.78
1584
1377
1345
1.96
1738
1412
1382
2.14
1904
1448
1420
2.34
2081
—
—
—
—
—
—
—
—
—
—
—
—
—
1.6
Rpm
Bhp
Watts
Rpm
1451
1.98
1762
1510
1477
2.12
1885
1536
1505
2.27
2017
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
3. See page 33 for general fan performance notes.
—
32
—
0.8
1.0
Bhp
Watts
Rpm
Bhp
0.72
640
1169
0.85
0.80
714
1195
0.93
0.90
796
1221
1.03
1.00
886
1250
1.14
1.11
986
1279
1.25
1.23
1095
1309
1.38
1.37
1213
1340
1.52
1.51
1342
1372
1.67
1.67
1482
1405
1.83
1.84
1633
1439
2.00
2.02
1796
1473
2.19
1.8
2.0
Bhp
Watts
Rpm
Bhp
1.44
1280
1522
1.61
1.54
1365
1540
1.71
1.64
1459
1559
1.82
1.76
1563
1579
1.93
1.89
1677
1601
2.06
2.03
1801
1624
2.21
2.18
1936
1648
2.36
2.34
2082
1673
2.53
2.52
2239
1699
2.71
2.71
2408
1726
2.90
—
—
—
—
0.8
1.0
Bhp
Watts
Rpm
Bhp
1.16
1032
1252
1.35
1.28
1134
1282
1.48
1.40
1245
1313
1.61
1.54
1365
1345
1.75
1.68
1495
1377
1.90
1.84
1634
1409
2.07
2.01
1784
1443
2.24
2.19
1945
—
—
2.38
2117
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1.8
2.0
Bhp
Watts
Rpm
Bhp
—
—
2.21
1962
2.35
2090
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Watts
753
829
914
1008
1111
1224
1346
1479
1623
1778
1945
Watts
1430
1517
1612
1718
1834
1961
2098
2246
2406
2579
—
Watts
1203
1311
1427
1553
1689
1834
1990
—
—
—
—
—
—
Watts
—
—
—
—
—
—
—
—
—
—
—
—
—
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Troubleshooting
