4000-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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Table 17: Fan Selection Chart
Airflow Cubic
Feet per
Minute (CFM)
Model
Discharge Velocity
Feet per
Minute (FPM)
Required Motor Horse Power (HP)
@ Noted External Static Pressure
(in wc)
Brake Horse Power (HP)
@ Noted External Static Pressure
(in wc)
dBA Decibel @
Noted External
Static Pressure
(in wc)
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 0
5,000 4024 1,241 2 2 2 3333CFCF1.11.41.61.92.22.52.8CFCF 65
6,000 4024 1,490 2 2 3 3355551.41.72.02.32.63.03.33.64.0 68
7,000 4024 1,738 2 3 3 3555551.82.12.52.83.13.53.94.24.6 71
8,000 4024 1,986 3 3 5 55557.57.52.22.63.03.33.74.14.54.95.3 74
9,000 4024 2,234 3 5 5 5 5 7.5 7.5 7.5 7.5 2.7 3.1 3.5 4.0 4.4 5.1 5.3 5.7 6.1 76
10,000 4024* 2,483 CF CF 5 5 7.5 7.5 7.5 7.5 10 3.2 3.7 4.2 4.6 5.1 5.6 6.1 6.6 7.0 78
10,000 4036 1,226 3 3 5 CF CF CF CF CF CF 2.1 2.6 3.2 CF CF CF CF CF CF 71
12,500 4036 1,532 5 5 5 5 7.5 7.5 7.5 CF CF 2.8 3.4 4.0 4.6 5.3 6.0 6.6 CF CF 73
15,000 4036 1,838 5 5 7.5 7.5 7.5 10 10 10 15 3.7 4.4 5.0 5.7 6.4 7.2 7.9 8.7 9.5 75
15,000 4040 1,309 5 5 7.5 7.5 7.5 10 10 CF CF 3.4 4.1 4.8 5.5 6.3 7.2 8.0 CF CF 74
17,500 4036 2,145 7.5 7.5 7.5 10 10 10 15 15 15 4.9 5.6 6.3 7.6 7.9 8.6 9.5 10.3 11.2 78
17,500 4040 1,527 5 7.5 7.5 7.5 10 10 10 15 15 4.2 5.0 5.8 6.6 7.5 8.3 9.2 10.2 11.1 76
20,000 4036 2,451 CF 10 10 10 15 15 15 15 15 6.3 7.1 7.9 8.7 10.1 10.4 11.3 12.2 13.1 80
20,000 4040 1,745 7.5 7.5 7.5 10 10 15 15 15 15 5.3 6.1 7.0 7.9 8.8 9.5 10.6 11.7 12.8 78
20,000 4044 1,429 5 7.5 7.5 10 10 15 15 15 15 4.7 5.6 6.5 7.5 8.5 9.5 10.6 11.7 12.8 77
22,500 4036* 2,757 CF CF 15 15 15 15 15 20 20 8.1 9.0 9.8 10.7 11.6 12.5 13.5 14.5 15.5 82
22,500 4040 1,964 7.5 10 10 15 15 15 15 15 20 6.6 7.5 8.4 9.4 10.3 11.4 12.4 13.4 14.5 80
22,500 4044 1,607 7.5 7.5 10 10 15 15 15 15 20 5.6 6.6 7.6 8.6 9.7 10.8 11.9 13.1 14.3 78
22,500 4049 1,319 7.5 7.5 10 10 15 15 15 20 20 5.1 6.1 7.2 8.3 9.5 10.7 12.0 14.7 16.2 71
25,000 4036**
25,000 4040 2,182 CF 10 15 15 15 15 20 20 20 10.3 11.2 12.1 13.1 14.0 15.0 16.0 17.7 18.1 86
25,000 4044 1,786 7.5 10 10 15 15 15 15 20 20 8.2 9.1 10.1 11.1 12.1 13.2 14.3 15.4 16.5 82
25,000 4049 1,465 7.5 10 10 15 15 15 15 20 20 6.7 7.8 8.8 9.9 11.0 12.2 13.4 14.7 15.9 80
27,500 4044 1,964 10 10 15 15 15 15 20 20 20 5.9 7.0 8.2 9.4 10.6 11.9 13.2 14.6 15.9 73
27,500 4049 1,612 7.5 10 10 15 15 15 20 20 20 10.0 11.0 12.1 13.1 14.2 15.4 16.5 17.7 18.9 83
30,000 4040* 2,618 15 15 20 20 20 20 25 25 25 8.1 9.1 10.3 11.4 12.6 13.9 15.1 16.4 17.7 81
30,000 4044 2,143 15 15 15 15 20 20 20 20 25 6.9 8.1 9.3 10.5 11.9 13.2 14.6 16.0 17.4 75
30,000 4049 1,758 10 10 15 15 15 20 20 20 25 12.6 13.7 14.8 15.5 16.6 17.8 19.1 20.3 21.6 86
30,000 4054 1,395 10 10 15 15 15 20 20 20 25 9.6 10.7 11.9 13.1 14.4 15.7 17.0 18.4 19.7 83
30,000 4060 1,111 7.5 10 15 15 15 20 20 25 25 8.0 9.2 10.5 11.9 13.2 14.6 16.1 17.6 19.1 77
32,500 4044 2,322 15 15 15 20 20 20 20 25 25 7.0 8.4 9.8 11.2 12.7 14.3 15.8 17.5 19.2 73
32,500 4049 1,905 10 15 15 15 20 20 20 25 25 11.4 12.6 13.8 15.1 16.4 17.8 19.2 20.6 22.1 84
32,500 4054 1,512 10 10 15 15 15 20 20 20 25 9.3 10.6 11.9 13.3 14.8 16.2 17.7 19.3 20.9 79
35,000 4044* 2,500 15 20 20 20 20 25 25 25 30 8.0 9.4 10.8 12.3 13.9 15.5 17.2 18.9 20.6 75
35,000 4049 2,051 15 15 15 20 20 20 25 25 25 13.4 14.6 16.0 17.3 18.7 20.1 21.6 23.1 24.6 86
35,000 4054 1,628 10 15 15 15 20 20 25 25 25 10.8 12.1 13.5 15.0 16.5 18.0 19.6 21.1 22.8 81
35,000 4060 1,296 10 15 15 20 20 20 25 25 30 9.0 10.5 12.0 13.6 15.2 16.9 18.6 20.4 22.2 77
37,500 4049* 2,198 15 15 20 20 20 25 25 25 30 8.0 9.6 12.9 14.8 16.7 18.7 20.7 22.9 25.0 73
37,500 4054 1,744 15 15 15 20 20 20 25 25 25 12.4 13.8 15.2 16.8 18.3 20.0 21.6 23.3 25.0 82
37,500 4060 1,388 10 15 15 15 20 20 25 25 25 10.2 11.7 13.3 15.0 16.6 18.4 20.2 22.0 23.9 78
40,000 4049* 2,344 20 20 20 25 25 25 30 30 30 8.9 10.6 12.3 14.1 15.9 17.8 19.8 21.8 23.9 75
40,000 4054 1,860 15 15 20 20 20 25 30 30 40 14.2 15.7 17.2 18.8 20.4 22.1 23.8 25.5 27.3 84
40,000 4060 1,481 15 15 15 20 20 25 25 25 30 11.4 13.1 14.7 16.4 18.2 20.0 25.4 27.5 29.5 80
40,000 4066 1,266 15 15 20 20 25 25 30 30 40 9.8 11.6 13.4 15.2 17.1 19.1 21.1 23.2 25.3 76
45,000 4049* 2,637 20 25 25 30 30 30 40 40 40 10.5 12.5 14.6 16.7 19.0 21.3 23.8 26.3 29.0 72
45,000 4054 2,093 20 20 20 25 25 30 30 30 40 18.5 20.1 21.8 23.5 25.2 27.0 28.8 30.7 32.6 87
45,000 4060 1,667 15 15 20 20 25 25 30 30 40 14.5 16.2 18.0 19.8 21.7 23.7 25.7 27.7 29.7 82
45,000 4066 1,424 15 15 20 20 25 25 30 30 30 12.0 13.9 15.8 17.8 19.8 21.9 24.1 26.4 28.6 79
50,000 4054* 2,326 20 25 25 30 30 30 40 40 40 10.6 12.6 14.7 16.9 19.1 21.4 23.8 26.2 26.7 74
50,000 4060 1,852 20 20 20 25 25 30 30 40 40 18.2 20.0 21.9 23.8 25.9 28.0 30.1 32.2 34.4 85
50,000 4066 1,582 15 20 20 25 25 30 30 40 40 14.6 16.6 18.7 20.8 23.0 25.2 27.4 29.8 32.3 81
50,000 4073 1,455 15 15 20 25 30 30 40 40 40 12.5 14.7 16.9 19.2 21.6 24.0 26.5 32.9 35.7 77
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