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Table 22 — Fan Performance — 48/50P100 Units with Airfoil Fan
AIRFLOW
0.30
(cfm)
rpm
bhp
20,000
795
6.08
22,000
867
7.75
24,000
939
9.71
26,000
1012
11.99
28,000
1084
14.61
30,000
1157
17.60
32,000
1231
20.97
34,000
1304
24.75
36,000
1378
28.97
38,000
1452
33.65
40,000
1526
38.81
AIRFLOW
2.70
(cfm)
rpm
bhp
20,000
1088
15.84
22,000
1137
18.15
24,000
1191
20.79
26,000
1247
23.78
28,000
1306
27.12
30,000
1367
30.86
32,000
1429
35.00
34,000
1493
39.57
36,000
1558
44.57
38,000
1624
50.05
40,000
1691
56.01
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
5.10
(cfm)
rpm
bhp
20,000
1342
27.42
22,000
1378
30.33
24,000
1418
33.51
26,000
1461
37.00
28,000
1507
40.86
30,000
1557
45.12
32,000
1609
49.81
34,000
1664
54.95
36,000
1721
60.57
38,000
1780
66.66
40,000
—
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NOTE(S):
a. If calculating static pressure for a 48 Series unit, be sure to add gas heat pressure drop from Component Pressure Drop table.
b. Fan performance is based on wet coils and clean 2 in. filters.
c. For return fan and high-capacity power exhaust units, add component pressure drop for economizer. Do not add component pressure drop for power exhaust.
d. See Component Pressure Drop data table before using Fan Performance tables.
e. To convert bhp to kW, use the formula:
Kilowatts = bhp x 0.746
Motor efficiency
See Physical Data table for motor efficiency.
LEGEND
48/50P3,P5,P7,P9 units only.
bhp
— Brake Horsepower
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.60
0.90
rpm
bhp
rpm
bhp
836
7.22
874
8.36
904
9.00
940
10.24
974
11.07
1007
12.41
1044
13.46
1075
14.90
1115
16.18
1144
17.73
1186
19.28
1214
20.93
1258
22.76
1284
24.52
1330
26.65
1355
28.52
1402
30.97
1426
32.94
1475
35.75
1498
37.82
1548
41.02
1570
43.20
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.00
3.30
rpm
bhp
rpm
bhp
1122
17.21
1155
18.60
1169
19.58
1200
21.05
1220
22.28
1249
23.81
1274
25.33
1302
26.92
1332
28.75
1357
30.41
1391
32.57
1415
34.29
1452
36.78
1475
38.58
1515
41.43
1537
43.31
1579
46.53
1600
48.48
1644
52.08
1664
54.13
1710
58.13
1729
60.26
5.40
5.70
rpm
bhp
rpm
bhp
1370
28.95
1399
30.48
1406
31.95
1434
33.57
1445
35.20
1471
36.91
1487
38.76
1512
40.54
1532
42.69
1556
44.54
1580
47.01
1603
48.92
1631
51.76
1653
53.72
1685
56.96
1706
58.99
1741
62.64
1761
64.73
—
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1.20
1.50
rpm
bhp
rpm
bhp
911
9.52
947
10.71
974
11.49
1008
12.76
1039
13.75
1070
15.11
1105
16.34
1134
17.79
1172
19.28
1200
20.82
1240
22.57
1267
24.22
1309
26.26
1334
28.00
1379
30.36
1403
32.20
1449
34.89
1472
36.84
1520
39.89
1541
41.92
1591
45.35
1611
47.49
3.60
3.90
rpm
bhp
rpm
bhp
1188
20.02
1220
21.47
1231
22.54
1261
24.05
1278
25.36
1307
26.94
1329
28.53
1356
30.18
1383
32.08
1408
33.79
1439
36.03
1463
37.81
1498
40.40
1520
42.24
1558
45.20
1580
47.11
1620
50.46
1641
52.44
1684
56.19
1703
58.25
1748
62.41
1767
64.55
6.00
rpm
bhp
1426
32.02
1461
35.21
1497
38.64
1537
42.35
1580
46.40
1626
50.85
1675
55.72
1727
61.04
1781
66.85
—
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28
a,b,c,d,e
1.80
2.10
rpm
bhp
rpm
bhp
983
11.94
1019
13.20
1041
14.06
1073
15.39
1101
16.49
1131
17.90
1163
19.25
1191
20.74
1227
22.37
1253
23.94
1292
25.86
1317
27.51
1358
29.74
1382
31.48
1426
34.04
1448
35.87
1494
38.76
1515
40.70
1562
43.95
1583
45.98
1632
49.63
1652
51.76
4.20
4.50
rpm
bhp
rpm
bhp
1251
22.93
1282
24.42
1291
25.59
1321
27.15
1335
28.55
1363
30.18
1382
31.85
1409
33.54
1433
35.52
1458
37.28
1487
39.60
1510
41.42
1543
44.10
1565
45.98
1601
49.05
1622
50.99
1661
54.44
1681
56.46
1722
60.33
1742
62.43
1785
66.71
—
—
2.40
rpm
bhp
1054
14.51
1105
16.76
1161
19.33
1219
22.25
1280
25.52
1342
29.18
1406
33.23
1471
37.71
1537
42.64
1604
48.01
1671
53.88
4.80
rpm
bhp
1312
25.91
1350
28.74
1390
31.83
1435
35.26
1483
39.05
1534
43.25
1587
47.88
1643
52.96
1701
58.50
1761
64.54
—
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