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AIRFLOW
(Cfm)
Rpm
1500
711
1600
751
1700
791
1800
852
1900
894
2000
936
2100
978
2200
1021
2300
1064
2400
1107
2500
1150
AIRFLOW
(Cfm)
Rpm
1500
1134
1600
1159
1700
1184
1800
1235
1900
1266
2000
1297
2100
1327
2200
1359
2300
1392
2400
1426
2500
1461
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 1.80. Extensive motor and electrical
testing on these units ensures that the full range of the motor can be
Table 8 — 551B060 Air Delivery — Vertical Discharge Units
0.1
0.2
Bhp
Rpm
0.33
769
0.39
806
0.46
846
0.55
905
0.64
945
0.74
984
0.85
1024
0.97
1064
1.10
1104
1.24
1145
1.39
1186
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
1.0
1.2
Bhp
Rpm
0.95
1213
1.02
1231
1.12
1258
1.29
1303
1.40
1330
1.53
1362
1.66
1393
1.81
1423
1.97
1454
2.15
1485
2.34
1518
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
0.4
Bhp
Rpm
Bhp
0.39
878
0.51
0.45
906
0.58
0.53
941
0.66
0.62
1002
0.78
0.72
1037
0.88
0.82
1072
0.98
0.93
1108
1.10
1.05
1145
1.22
1.18
1183
1.36
1.32
1222
1.52
1.48
1262
1.68
1.4
Bhp
Rpm
Bhp
1.11
1276
1.38
1.20
1311
1.39
1.30
1322
1.49
1.48
1371
1.69
1.59
1396
1.81
1.73
1422
1.94
1.87
1452
2.08
2.02
1483
2.24
2.18
1515
2.41
2.36
1544
2.59
2.55
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. Motor drive range: 1020 to 1460. All other rpms require field-
supplied drive.
8. Interpolation is permissible. Do not extrapolate.
9. Minimum allowable cfm is 300 cfm/ton.
—23—
0.6
Rpm
Bhp
Rpm
971
0.64
1052
1004
0.73
1087
1030
0.80
1112
1084
0.93
1163
1119
1.04
1194
1154
1.16
1226
1190
1.29
1259
1225
1.43
1294
1260
1.57
1330
1296
1.73
1365
1331
1.89
1400
1.6
Rpm
Bhp
1331
1.49
1395
1.59
1403
1.69
1433
1.90
1460
2.03
1485
2.16
1510
2.31
1538
2.46
1569
2.64
1601
2.84
—
—
0.8
Bhp
0.78
0.88
0.96
1.10
1.21
1.33
1.47
1.62
1.78
1.94
2.12
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