Johnson Controls
Start-Up & Operation Guide | 5586996-JSG-A-0120
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Table 5: 40–50 Ton Exhaust Fan Total Static Pressure
CFM
0.5 TSP 1.0 TSP 1.5 TSP 2.0 TSP 2.5 TSP 3.0 TSP
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
8,000 293 1.23 399 2.19 487 3.23 559 4.35 622 5.56 679 6.84
9,000 302 1.50 400 2.46 488 3.68 561 4.85 625 6.12 682 7.46
10,000 312 1.81 404 2.83 488 4.11 563 5.42 628 6.73 685 8.14
11,000 324 2.20 411 3.31 490 4.51 564 6.03 629 7.44 688 8.89
12,000 338 2.67 420 3.84 494 5.05 565 6.56 630 8.21 689 9.73
13,000 351 3.21 429 4.40 500 5.73 567 7.13 631 8.91 690 10.65
14,000 366 3.82 439 5.03 508 6.50 571 7.89 633 9.56 691 11.52
15,000 381 4.52 451 5.77 518 7.31 577 8.81 636 10.38 692 12.30
16,000 396 5.30 464 6.63 527 8.15 586 9.83 640 11.41 695 13.18
17,000 411 6.17 478 7.58 536 9.08 595 10.90 647 12.60 699 14.31
18,000 427 7.14 492 8.64 548 10.17 604 12.00 656 13.89 704 15.65
19,000 443 8.21 506 9.80 561 11.39 613 13.17 665 15.23 712 17.13
20,000 459 9.39 520 11.08 574 12.73 624 14.49 674 16.59 721 18.70
Table 6: 25–30 Ton Return Fan Total Static Pressure
CFM
0.5 TSP 1.0 TSP 1.5 TSP 2.0 TSP 2.5 TSP 3.0 TSP
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
5,000 - - - - 878 2.24 976 3.01 1070 3.86 1158 4.81
6,000 - - 835 1.96 936 2.76 1026 3.60 1110 4.49 1191 5.43
7,000 - - 903 2.42 1000 3.37 1085 4.30 1163 5.26 1237 6.28
8,000 872 1.92 976 2.96 1066 4.04 1149 5.11 1224 6.18 1294 7.26
9,000 955 2.40 1051 3.61 1137 4.78 1215 6.00 1288 7.21 1356 8.40
10,000 1042 2.97 1127 4.35 1211 5.63 1285 6.96 1354 8.31 1420 9.66
11,000 1129 3.66 1207 5.16 1285 6.61 1358 8.02 1424 9.50 - -
12,000 1218 4.49 1290 6.05 1361 7.71 1432 9.24 - - - -
Table 7: 40–50 Ton Return Fan Total Static Pressure
CFM
0.5 TSP 1.0 TSP 1.5 TSP 2.0 TSP 2.5 TSP 3.0 TSP
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
8,000 - - - - - - - - - - 1075 6.94
9,000 - - - - - - - - 1043 6.39 1109 7.66
10,000 - - - - - - - - 1086 7.19 1149 8.54
11,000 - - - - - - 1065 6.47 1130 7.98 1192 9.50
12,000 - - - - 1048 5.84 1114 7.25 1176 8.79 1236 10.44
13,000 - - 1034 5.04 1101 6.57 1165 8.16 1224 9.70 1282 11.40
14,000 - - 1094 5.82 1156 7.37 1218 9.12 1275 10.77 1329 12.47
15,000 1091 5.15 1154 6.70 1213 8.29 1271 10.10 1327 11.96 1380 13.71
16,000 1156 6.02 1215 7.68 1271 9.34 1325 11.16 1380 13.17 1431 15.10
17,000 1220 6.99 1277 8.76 1331 10.51 1382 12.36 1433 14.41 1484 16.55
18,000 1285 8.06 1340 9.96 1391 11.80 1440 13.70 1488 15.76 1537 18.01
19,000 1351 9.25 1403 11.26 1452 13.21 1499 15.18 1544 17.26 1590 19.53
20,000 1416 10.56 1466 12.69 1514 14.75 1559 16.80 1602 18.92 - -