Single-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
50
40
30
20
10
0
Class Max RPM
I 1915
II 2498
III 3147
IV 3600
Static Pressure (in. wg)
24
20
16
12
8
4
BISW-20
15
10
7½
5
3
2
1½
1
20
25 30
40
1100
1400
1700
1915
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
0
0 2 4 6 8 10 12 14 16 18
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
550 100 80 76 70 65 58 52 43 40 67
80 79 75 65 60 53 49 38 38 64
60 78 74 63 58 55 48 37 35 63
50 77 74 61 58 56 48 39 36 63
40 77 74 60 58 57 49 41 36 63
1100 100 90 87 89 84 80 76 67 61 86
80 89 87 85 80 74 69 62 56 82
60 88 86 81 77 73 68 63 59 79
50 87 85 79 76 73 68 65 60 78
40 87 84 78 75 73 68 65 61 78
1600 100 93 92 95 92 89 87 80 72 95
80 91 89 94 90 86 83 77 71 92
60 93 90 93 88 83 80 76 72 90
50 93 90 91 85 82 80 76 73 89
40 98 94 92 86 82 80 78 75 89
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
3600 100 106 109 109 111 109 107 105 98 114
80 105 107 107 110 107 103 99 94 112
60 104 106 105 108 105 101 98 94 110
50 106 107 107 108 105 101 98 95 110
40 109 110 109 107 103 100 98 95 109
Volume (cfm x 1000)
0 10 20 30
3
Volume (m /hr x 1000)
Sound Power [dB Ref 10 -12 watts]
RPM
BHP
% WOV
Density 0.075 lb/ft 3
Density 1.2 kg/m 3
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. The A-weighted sound
ratings shown have been calculated per AMCA International Standard 301.
31
2200
2498
50% WOV
2700
2900
50
3147
60% WOV
3400
3600
70% WOV
80% WOV
90% WOV
®
20 BISW
% WOV = (CFM X 100) / (RPM X 4.74)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 550 100 93 77 72 66 63 54 45 38 71
80 93 75 68 62 59 51 42 34 70
60 90 71 65 58 56 49 42 35 67
50 89 69 63 59 58 50 43 36 66
40 88 69 63 59 59 50 44 38 66
1100 100 98 91 89 84 83 79 69 62 88
80 98 90 88 81 78 72 64 57 85
60 97 89 86 78 75 69 63 58 82
50 98 88 83 76 73 67 62 59 80
40 97 89 82 75 72 67 63 60 80
1600 100 103 97 98 92 91 89 83 73 97
80 101 94 96 89 88 85 78 70 93
60 101 92 95 87 86 82 75 70 92
50 101 93 94 86 84 80 74 71 90
40 104 94 93 85 83 79 74 71 90
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
3600 100 116 115 113 115 113 110 108 102 118
80 116 113 109 111 110 106 103 97 114
60 114 110 107 108 107 103 99 94 111
50 114 110 107 106 105 102 98 93 109
40 118 113 108 106 104 101 97 93 110