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AIRFLOW
(Cfm)
0.1
Rpm
1800
852
1900
894
2000
936
2100
978
2200
1021
2300
1064
2400
1107
2500
1150
2600
1193
2700
1237
2800
1280
2900
1324
3000
1368
AIRFLOW
(Cfm)
1.0
Rpm
1800
1235
1900
1266
2000
1297
2100
1327
2200
1359
2300
1392
2400
1426
2500
1461
2600
1497
2700
1532
2800
—
2900
—
3000
—
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required. (See
Note 7.)
2.
indicates field-supplied motor and drive are required.
3.
indicates maximum usable bhp.
4. Maximum continuous bhp is 2.40. Extensive motor and electrical
testing on these units ensures that the full range of the motor can be
Table 9 — 551B072 Air Delivery — Vertical Discharge Units
External Static Pressure (in. wg)
0.2
Bhp
Rpm
Bhp
0.55
905
0.62
0.64
945
0.72
0.74
984
0.82
0.85
1024
0.93
0.97
1064
1.05
1.10
1104
1.18
1.24
1145
1.32
1.39
1186
1.48
1.56
1228
1.65
1.74
1269
1.83
1.94
1311
2.03
2.15
1354
2.24
2.37
1396
2.46
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
1.2
Bhp
Rpm
Bhp
1.29
1303
1.48
1.40
1330
1.59
1.53
1362
1.73
1.66
1393
1.87
1.81
1423
2.02
1.97
1454
2.18
2.15
1485
2.36
2.34
1518
2.55
2.54
1552
2.76
2.75
—
—
—
—
—
—
—
—
—
—
—
BELT-DRIVE MOTOR
0.4
Rpm
Bhp
Rpm
1002
0.78
1084
1037
0.88
1072
0.98
1108
1.10
1145
1.22
1225
1183
1.36
1260
1222
1.52
1296
1262
1.68
1331
1301
1.86
1367
1341
2.05
1404
1381
2.25
1442
1420
2.47
1481
1460
2.69
1521
1.4
Rpm
Bhp
1371
1.69
1396
1.81
1422
1.94
1452
2.08
1483
2.24
1515
2.41
1544
2.59
1575
2.78
—
—
—
—
—
—
—
—
—
—
utilized with confidence. Using your fan motors up to the ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
5. Values include losses for filters, unit casing, and wet coils.
6. Use of a field-supplied motor may affect wire sizing. Contact your
local representative to verify.
7. Standard motor drive range: 1120 to 1585. All other rpms require field-
supplied drive.
8. Interpolation is permissible. Do not extrapolate.
9. Minimum allowable cfm is 300 cfm/ton.
—24—
0.6
Bhp
Rpm
0.93
1163
1119
1.04
1194
1154
1.16
1226
1190
1.29
1259
1.43
1294
1.57
1330
1.73
1365
1.89
1400
2.07
1435
2.26
1471
2.47
1506
2.69
1542
2.93
—
1.6
Rpm
Bhp
1433
1.90
1460
2.03
1485
2.16
1510
2.31
1538
2.46
1569
2.64
1601
2.84
—
—
—
—
—
—
—
—
—
—
—
—
0.8
Bhp
1.10
1.21
1.33
1.47
1.62
1.78
1.94
2.12
2.31
2.51
2.72
2.94
—
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