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 1537
II 2004
III 2525
Static Pressure (in. wg)
18
16
14
12
10
8
6
4
2
AFSW-27
3
2
1½
1
¾
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
600
850
1050
0
0 4 8 12 16 20 24 28
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
450 100 83 77 71 63 60 51 44 37 68
80 83 74 67 58 53 47 42 36 64
60 81 73 65 56 54 47 42 36 63
50 80 73 64 57 55 51 45 37 63
40 79 72 63 56 56 51 45 37 62
600 100 83 79 76 69 70 60 52 46 74
80 82 79 74 65 63 56 49 43 70
60 81 77 71 64 63 56 51 45 69
50 80 77 70 64 64 57 52 45 69
40 79 76 70 64 64 57 53 45 69
900 100 89 88 83 78 76 73 64 59 82
80 86 84 81 74 72 67 61 57 78
60 86 85 81 74 73 68 65 60 79
50 88 88 80 74 74 68 66 62 79
40 90 90 82 75 74 69 67 62 80
1300 100 94 91 98 89 85 84 76 70 93
80 92 89 97 86 80 78 72 68 91
60 90 85 92 84 80 77 75 72 88
50 101 96 94 85 81 78 77 76 90
40 103 97 96 87 82 78 77 76 91
1800 100 99 95 105 97 94 95 88 81 102
80 95 91 101 92 88 88 83 77 96
60 93 92 99 89 87 86 84 81 95
50 95 93 98 89 87 86 85 83 95
40 97 94 99 90 87 87 86 83 95
2525 100 106 106 109 109 102 102 99 92 110
80 102 101 105 105 97 95 93 88 105
60 99 101 104 102 95 94 93 90 103
50 102 103 104 101 95 94 93 91 103
40 104 104 105 103 96 94 93 91 104
5
15
10
7½
20
25
30
1300
40 50
1537
Volume (cfm x 1000)
0 5 10 15 20 25 30 35 40 45
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
27 AFSW
% WOV = (CFM X 100) / (RPM X 10.8)
The sound power level ratings shown are in decibels, referred to 10
67
-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.
1750
2004
50% WOV
2200
2350
2525
60% WOV
70% WOV
80% WOV
90% WOV
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 450 100 91 83 73 65 63 53 45 39 72
80 88 81 70 62 58 50 44 38 69
60 87 80 67 59 58 49 45 40 68
50 87 79 67 59 58 49 45 40 67
40 87 79 66 59 57 49 46 41 67
600 100 93 84 77 72 71 62 54 47 76
80 89 83 75 69 67 58 51 46 73
60 88 81 73 65 64 56 53 48 71
50 88 80 72 65 64 56 53 49 70
40 88 80 71 64 64 56 54 50 70
900 100 99 97 85 81 80 75 68 61 86
80 96 92 82 78 76 70 63 59 82
60 94 90 80 75 72 67 64 61 79
50 95 90 79 74 71 67 65 63 79
40 98 91 80 74 71 67 65 63 80
1300 100 109 101 100 91 89 88 80 73 96
80 106 98 97 89 85 82 74 70 93
60 108 97 96 85 82 78 73 72 91
50 104 96 94 84 80 77 74 73 89
40 109 98 94 84 80 77 74 73 90
1800 100 115 108 108 99 98 98 92 85 105
80 112 104 104 96 94 92 87 79 101
60 108 99 102 93 91 87 84 81 98
50 108 98 101 92 89 86 85 82 97
40 107 99 101 91 89 85 85 82 97
2525 100 122 119 115 111 105 105 102 96 114
80 119 115 111 108 103 100 97 90 110
60 114 110 108 105 99 96 93 90 107
50 115 110 107 104 98 95 93 91 105
40 114 110 107 104 97 94 92 91 105
®