Single-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
40
35
30
25
20
15
10
5
0
Class Max RPM
I 1092
II 1424
III 1794
Static Pressure (in. wg)
18
16
14
12
10
8
6
4
2
AFSW-36
30
25
20
15
10
7½
5
3
2
1½
40
50 60 75 100
450
600
750
900
1092
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
1250
0
0 10 20 30 40 50 60
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
350 100 79 75 70 68 63 54 47 43 69
80 78 74 69 66 62 54 47 43 68
60 75 71 67 66 62 54 47 43 67
50 76 71 66 65 62 55 48 44 67
40 76 71 67 66 62 55 48 44 67
500 100 91 85 79 75 72 64 56 52 78
80 89 83 76 72 68 62 54 49 75
60 88 80 73 71 69 63 57 51 74
50 87 79 72 71 69 63 57 52 73
40 86 79 72 70 69 63 57 52 73
700 100 97 96 85 82 81 75 66 61 86
80 98 96 83 77 76 70 64 59 84
60 97 95 80 75 75 71 67 62 83
50 94 92 79 75 75 71 68 64 81
40 96 95 83 76 75 71 67 64 83
900 100 94 100 91 87 88 85 74 69 93
80 92 100 89 82 82 79 71 67 88
60 89 98 85 79 80 77 74 71 87
50 89 96 84 79 80 77 75 72 86
40 92 94 84 78 80 76 75 72 85
1300 100 101 108 105 95 95 95 88 81 102
80 98 108 104 92 90 89 83 77 99
60 96 106 101 89 87 86 84 81 96
50 96 104 99 87 86 86 84 82 95
40 97 104 99 87 86 86 85 82 96
1794 100 106 113 119 105 101 102 99 91 112
80 103 111 119 103 97 97 93 86 111
60 102 109 116 100 94 94 92 89 109
50 102 109 115 98 93 93 92 90 107
40 102 109 115 98 93 93 92 91 107
Volume (cfm x 1000)
0 10 20 30 40 50 60 70 80 90 100
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
36 AFSW
% WOV = (CFM X 100) / (RPM X 28.1)
The sound power level ratings shown are in decibels, referred to 10
73
-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.
1424
50% WOV 60% WOV
1550
1650
1794
70% WOV
80% WOV
90% WOV
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 350 100 82 83 77 70 64 56 48 44 73
80 80 83 76 68 63 56 47 44 72
60 79 82 76 68 64 57 49 45 72
50 79 81 75 68 65 58 50 46 72
40 79 81 75 69 65 57 50 46 72
500 100 94 87 79 76 73 64 57 51 79
80 91 86 77 73 69 62 56 49 76
60 88 83 75 71 68 62 57 52 74
50 89 83 75 70 68 62 57 53 74
40 86 83 74 70 67 61 57 53 74
700 100 102 99 88 84 83 77 69 64 89
80 100 97 86 80 79 73 66 61 86
60 99 96 84 78 76 71 66 63 84
50 97 95 83 77 75 70 66 63 83
40 97 94 82 77 75 70 66 63 83
900 100 103 104 93 91 91 87 77 72 95
80 98 102 90 87 84 82 73 69 91
60 96 100 88 84 81 78 73 70 88
50 96 100 87 83 81 77 73 70 88
40 95 99 87 83 80 77 73 71 88
1300 100 109 109 105 99 98 97 91 84 104
80 105 109 104 97 93 92 86 80 101
60 102 105 101 94 90 88 84 81 98
50 101 103 99 93 89 86 84 81 96
40 101 103 99 92 88 85 84 81 96
1794 100 115 117 117 108 105 104 101 94 113
80 111 114 117 106 102 99 96 90 111
60 108 111 114 103 99 95 93 89 108
50 107 110 111 102 97 94 92 89 106
40 106 109 111 101 96 93 91 89 106
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