Centrifugal Fan Class IV - Greenheck Fan Corporation - Building ...

20 BISW
Performance Data
Wheel Diameter = 20 in.
Outlet Area = 2.30 ft 2
Tip Speed = 5.24 x RPM
Maximum BHP = (RPM/1035) 3
Pressure Class Limits
Class Max. RPM
III 3147
IV 3794
Static Pressure in Inches
CFM OV 10 11 12 13 14 15 16 17 18
20
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6700 2913 2620 14.6 2715 16.0 2811 17.5 2909 19.1 3002 20.8 3092 22.4 3179 24.1 3264 25.8
7230 3143 2671 15.9 2766 17.4 2857 18.9 2944 20.4 3034 22.1 3123 23.8 3210 25.5 3295 27.3 3376 29.1 3533 32.7
7760 3373 2726 17.2 2817 18.8 2908 20.4 2994 22.0 3078 23.6 3158 25.2 3242 27.0 3326 28.8 3408 30.7 3564 34.5
8290 3604 2786 18.6 2874 20.3 2959 21.9 3046 23.6 3129 25.3 3209 27.0 3287 28.8 3362 30.5 3439 32.3 3595 36.3
8820 3834 2847 20.2 2935 21.9 3019 23.6 3099 25.3 3180 27.1 3260 28.9 3337 30.7 3412 32.5 3485 34.4 3625 38.1
9350 4065 2911 21.8 2996 23.6 3079 25.4 3160 27.2 3237 29.0 3312 30.8 3389 32.7 3463 34.6 3536 36.6 3675 40.4
9880 4295 2979 23.5 3061 25.4 3141 27.2 3220 29.1 3297 31.0 3372 32.9 3443 34.9 3515 36.8 3587 38.8 3726 42.9
10410 4526 3047 25.4 3128 27.3 3206 29.2 3282 31.2 3358 33.2 3432 35.1 3504 37.2 3573 39.2 3640 41.2
10940 4756 3116 27.4 3196 29.4 3274 31.4 3349 33.4 3421 35.4 3493 37.5 3564 39.5 3633 41.6 3701 43.8
11470 4986 3193 29.5 3266 31.5 3342 33.6 3416 35.7 3488 37.8 3557 39.9 3626 42.1 3694 44.2 3761 46.4
12000 5217 3274 31.8 3343 33.9 3411 36.0 3485 38.2 3555 40.3 3624 42.5 3691 44.7 3756 46.9
12530 5447 3356 34.2 3423 36.4 3488 38.5 3554 40.7 3624 43.0 3692 45.3 3758 47.5
Performance shown is for model BISW arrangement 1, installation Type B - free inlet, ducted outlet.
Performance ratings do not include the effects of appurtenances in the airstream.
Power rating (BHP) does not include drive losses.
Sound Power [dB Ref 10 -12 watts]
INLET SOUND POWER, Lwi
RPM % WOV 1 2 3 4 5 6 7 8 LwiA
2200 100 96 95 98 101 96 95 91 81 102
80 95 94 96 99 92 90 85 78 99
60 94 92 94 97 91 88 85 81 97
50 95 93 95 97 91 89 85 82 97
40 98 96 96 95 90 88 86 83 97
3147 100 104 105 105 109 106 104 102 94 111
80 103 104 104 108 103 99 96 90 109
60 102 103 102 105 101 98 94 90 106
50 104 103 103 105 101 98 95 91 107
40 107 107 105 104 100 97 95 92 106
3794 100 107 110 110 112 111 108 106 100 116
80 106 109 109 111 109 104 101 95 113
60 105 108 107 109 106 103 99 96 111
50 107 109 108 109 106 103 100 96 111
40 110 112 111 108 105 102 99 97 111
% WOV = (CFM x 100) / (RPM x 4.74)
OUTLET SOUND POWER, Lwo
RPM % WOV 1 2 3 4 5 6 7 8 LwoA
2200 100 106 103 102 105 99 98 95 85 106
80 105 99 99 101 96 93 89 80 102
60 103 95 96 98 94 90 85 80 99
50 103 96 95 95 92 89 84 79 97
40 106 98 96 95 91 87 84 80 97
3147 100 114 112 109 113 109 107 105 98 115
80 114 109 105 109 106 103 99 92 111
60 112 106 103 105 103 100 96 90 108
50 112 106 103 103 101 98 94 90 106
40 116 109 105 103 101 97 94 90 106
3794 100 117 117 114 116 114 111 110 104 119
80 117 114 110 112 111 108 104 98 115
60 115 111 108 109 108 105 101 96 112
50 115 112 108 107 106 103 100 95 111
40 119 115 110 107 106 102 99 95 111
The sound power level ratings shown are in decibels, referred to 10 -12 watts calculated per AMCA Standard 301. Values shown are for inlet Lwi, LwiA
and outlet Lwo, LwoA sound power levels for installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction.
12
3147
GREENHECK
®