Single-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
60
40
20
0
Class Max RPM
I 847
II 1105
III 1392
IV 1675
Static Pressure (in. wg)
25
20
15
10
5
BISW-44
40
30 1300
25
20
10
7½
5
700
600
500
847
1000
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
0
0 10 20 30 40 50 60 70 80 90
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
250 100 82 73 68 63 58 49 42 37 66
80 81 72 66 59 56 46 39 36 63
60 81 71 65 59 57 46 40 35 63
50 81 70 66 61 59 47 42 37 64
40 81 70 66 61 59 48 43 38 64
500 100 103 93 85 80 79 73 65 60 85
80 100 89 81 76 75 69 63 58 81
60 97 86 78 74 75 69 66 62 80
50 94 84 77 74 74 69 67 62 79
40 99 87 80 75 75 70 67 63 81
700 100 100 102 94 90 88 84 75 70 94
80 96 102 90 85 83 79 72 68 90
60 94 97 86 82 81 78 75 71 87
50 94 96 85 81 81 77 75 72 87
40 101 95 88 83 81 78 77 75 88
1000 100 106 111 104 98 96 95 88 82 103
80 101 109 99 94 92 89 83 79 99
60 99 106 96 90 90 87 85 82 96
50 101 107 96 89 89 87 85 83 96
40 109 109 100 92 90 88 86 83 99
1392 100 112 117 117 108 104 103 98 92 112
80 107 114 114 103 100 98 93 88 109
60 104 111 110 100 97 96 93 90 106
50 106 112 111 99 96 95 93 91 106
40 115 117 114 103 98 96 94 92 109
1675 100 115 121 120 114 109 107 104 97 117
80 110 117 117 110 105 103 99 94 113
60 107 114 114 107 102 100 98 95 110
50 110 116 114 106 101 99 98 96 110
40 118 121 117 110 103 101 99 96 113
60
50
15
75
100
125
150
Volume (cfm x 1000)
0 50 100 150
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.
47
1105
200
1200
250
50% WOV
1392
1500
60% WOV
1600
1675
70% WOV
80% WOV
90% WOV
®
44 BISW
% WOV = (CFM X 100) / (RPM X 51.4)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 250 100 86 80 71 68 62 54 48 44 71
80 84 79 70 65 61 52 46 44 69
60 81 79 69 65 62 52 47 44 68
50 82 79 69 65 62 52 47 44 68
40 81 78 69 65 62 52 48 45 68
500 100 103 94 88 85 82 76 69 66 88
80 99 91 84 81 77 71 65 61 83
60 97 89 81 78 75 70 65 63 81
50 98 89 81 77 75 70 66 66 81
40 97 88 80 77 74 69 66 66 81
700 100 108 106 97 94 91 88 81 76 97
80 102 103 92 89 86 82 75 71 93
60 100 101 90 86 82 79 75 72 90
50 100 99 89 85 81 78 75 73 89
40 100 98 88 85 81 77 74 73 88
1000 100 113 115 107 103 100 98 92 85 107
80 110 112 102 99 96 92 87 81 102
60 105 110 100 96 92 89 85 81 100
50 106 109 99 95 91 88 85 82 99
40 107 108 98 94 90 87 85 82 98
1392 100 119 121 119 112 109 107 102 96 116
80 116 118 115 108 104 101 96 91 112
60 111 115 114 105 101 98 94 90 109
50 112 115 113 104 100 96 94 90 108
40 113 115 112 103 99 95 93 90 107
1675 100 123 125 123 118 114 111 108 102 121
80 119 122 119 114 109 106 102 96 116
60 114 118 117 111 106 103 99 95 114
50 115 118 116 111 105 101 98 95 113
40 116 118 115 110 104 100 98 95 112