10
Table 5 — Fan Performance — 48/50N 105 Nominal Ton Units Standard Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.20.40.60.81.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 974 8.74 996 9.38 1019 10.03 1041 10.70 1063 11.37
25,000 1132 13.69 1151 14.44 1171 15.20 1190 15.97 1209 16.75
27,000 1213 16.82 1231 17.62 1249 18.44 1267 19.26 1284 20.09
29,000 1294 20.43 1312 21.30 1328 22.17 1345 23.05 1362 23.93
31,000 1377 24.60 1393 25.51 1409 26.44 1425 27.37 1441 28.31
33,000 1461 29.35 1476 30.33 1491 31.31 1506 32.30 1521 33.29
35,000 1546 34.75 1560 35.78 1575 36.82 1589 37.87 1603 38.92
37,000 1632 40.86 1645 41.94 1659 43.04 1672 44.14 1686 45.25
39,000 1719 47.72 1732 48.87 1744 50.03 1757 51.19 1770 52.35
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.21.41.61.82.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 1084 12.05 1105 12.74 1126 13.44 1147 14.14 1167 14.86
25,000 1227 17.54 1246 18.33 1264 19.13 1282 19.94 1300 20.76
27,000 1302 20.93 1319 21.78 1336 22.63 1353 23.50 1370 24.37
29,000 1378 24.82 1395 25.73 1411 26.63 1427 27.55 1443 28.47
31,000 1456 29.26 1472 30.22 1487 31.18 1502 32.14 1517 33.12
33,000 1536 34.29 1550 35.30 1565 36.32 1579 37.34 1593 38.37
35,000 1617 39.98 1630 41.04 1644 42.12 1658 43.19 1671 44.27
37,000 1699 46.36 1712 47.49 1725 48.61 1738 49.74 1751 50.88
39,000 178253.52179554.70——————
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.22.42.62.83.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 1187 15.58 1207 16.31 1226 17.04 1245 17.78 1264 18.53
25,000 1318 21.58 1335 22.41 1353 23.25 1370 24.09 1387 24.94
27,000 1387 25.24 1404 26.12 1420 27.01 1436 27.90 1452 28.81
29,000 1459 29.40 1474 30.33 1490 31.27 1505 32.22 1520 33.17
31,000 1532 34.10 1547 35.09 1562 36.08 1576 37.08 1591 38.09
33,000 1608 39.40 1622 40.44 1636 41.49 1650 42.54 1663 43.61
35,000 1685 45.36 1698 46.46 1712 47.55 1725 48.66 1738 49.78
37,000 176452.03177753.18178954.33————
39,000 ——————————
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.23.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000
1283 19.29 1302 20.05 1320 20.82 1338 21.59 1356 22.37
25,000
1404 25.80 1420 26.67 1437 27.53 1453 28.41 1470 29.29
27,000
1468 29.71 1484 30.63 1500 31.55 1515 32.47 1531 33.41
29,000
1536 34.13 1551 35.10 1566 36.07 1580 37.05 1595 38.03
31,000
1605 39.10 1620 40.11 1634 41.14 1648 42.16 1662 43.20
33,000
1677 44.67 1691 45.74 1704 46.81 1718 47.89 1731 48.98
35,000
1751 50.89 1764 52.01 1777 53.14 1790 54.28
——
37,000 ——————————
39,000 ——————————
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————