Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
40
35
30
25
20
15
10
5
0
Class Max RPM
I 1907
II 2490
III 3135
Static Pressure (in. wg)
18
16
14
12
10
8
6
4
2
30
25
20
15
10
7½
5
3
2
40
50
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
800 800
1100 1100
1400 1400
1700 1700
0
0 5 10 15 20 25 30 35
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
700 100 81 84 81 79 77 73 67 62 82
80 81 82 79 78 75 72 68 63 80
60 79 81 78 77 74 72 68 63 80
50 79 80 77 76 74 72 68 63 80
40 81 80 77 77 75 73 68 63 80
1000 100 84 88 88 84 81 77 71 66 86
80 83 87 86 82 79 75 71 66 85
60 82 85 84 80 77 74 71 66 83
50 85 85 83 79 77 74 71 66 83
40 89 86 84 79 77 74 71 66 83
1300 100 91 90 95 89 85 82 74 68 92
80 88 87 94 86 82 78 72 67 89
60 90 87 90 84 80 76 71 66 86
50 93 91 91 84 80 76 71 67 87
40 95 96 92 85 80 77 71 67 88
1700 100 95 94 101 95 91 88 81 75 97
80 92 90 99 92 88 84 77 72 95
60 93 91 96 89 85 81 75 71 92
50 98 98 98 91 86 81 75 71 94
40 99 100 99 92 86 82 75 71 95
2300 100 105 100 104 105 99 96 91 84 106
80 103 97 102 104 96 92 86 80 103
60 104 98 99 101 94 90 84 79 101
50 107 106 99 101 94 92 84 80 101
40 109 107 99 101 94 92 84 80 101
3135 100 111 108 108 112 108 104 100 94 113
80 110 106 105 110 106 101 95 89 111
60 110 107 105 108 104 99 93 88 109
50 113 113 112 108 103 100 94 88 110
40 115 114 112 108 103 100 94 88 110
Volume (cfm x 1000)
0 5 10 15 20 25 30 35 40 45 50 55
3
Volume (m /hr x 1000)
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.
60
1907 1907
55
2200 2200
75
50% WOV
2490 2490
2700 2700
2900 2900
60% WOV
3135 3135
Sound Power [dB Ref 10 -12 watts]
70% WOV
RPM
BHP
% WOV
Density 0.075 lb/ft 3
Density 1.2 kg/m 3
80% WOV
22 AFDW
90% WOV
% WOV = (CFM X 100) / (RPM X 10.9)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 700 100 84 86 80 77 75 67 57 50 80
80 83 83 78 73 70 65 56 48 76
60 81 80 75 70 68 65 56 48 74
50 84 82 75 70 68 65 56 48 74
40 88 84 75 70 68 66 57 48 75
1000 100 90 94 88 84 82 76 67 59 87
80 87 94 87 80 78 72 65 57 85
60 87 88 82 77 74 70 64 56 80
50 95 90 83 76 74 70 64 57 81
40 98 93 84 77 74 70 64 57 82
1300 100 96 94 99 89 87 82 73 66 94
80 92 90 96 86 84 77 69 63 91
60 96 89 94 82 80 73 67 64 88
50 100 95 95 83 80 73 67 64 89
40 104 101 95 83 81 74 67 65 90
1700 100 101 98 100 95 94 89 82 74 98
80 98 94 98 91 90 84 77 71 95
60 102 95 96 89 87 80 74 71 92
50 106 101 99 90 87 80 74 72 94
40 108 105 100 91 89 81 75 72 96
2300 100 112 104 107 109 103 98 93 86 109
80 104 98 103 105 100 94 87 81 105
60 108 101 99 101 97 90 84 81 101
50 112 107 99 101 96 90 84 81 102
40 117 112 102 104 99 92 87 86 105
3135 100 119 114 110 116 113 107 102 96 117
80 111 107 105 111 109 103 97 91 113
60 114 110 107 107 106 100 93 89 109
50 118 116 113 107 105 100 93 89 111
40 124 121 118 111 108 102 96 93 114
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