Single-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
22
20
18
16
14
12
10
8
6
4
2
0
Class Max RPM
I 4050
II 4500
III NA
IV NA
Static Pressure (in. wg)
9
8
7
6
5
4
3
2
1
BISW-8
1½
1
¾
½
¼
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
1500
2000
30% WOV
2500
3000
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
900 100 71 63 56 55 51 46 40 32 57
80 71 63 56 54 49 45 40 31 56
60 72 63 56 53 47 45 40 31 56
40 72 62 56 52 46 45 40 31 55
20 73 63 57 53 47 46 41 32 56
1300 100 77 70 69 64 60 56 50 42 66
80 76 68 67 63 59 54 50 42 65
60 76 69 65 62 57 53 50 41 64
40 76 69 64 61 56 53 50 41 63
20 77 70 65 62 57 54 51 42 64
1800 100 84 74 72 73 69 64 59 52 74
80 85 73 71 73 68 62 57 50 73
60 84 74 72 72 67 60 56 48 72
40 85 75 71 71 65 60 56 48 72
20 85 75 72 72 66 61 57 49 73
2500 100 86 78 78 85 80 72 68 61 85
80 87 77 80 85 77 71 65 60 84
60 84 78 81 83 77 70 63 58 83
40 84 80 80 82 76 69 63 57 81
20 85 81 81 83 77 70 64 58 82
3600 100 95 88 84 92 87 82 78 73 92
80 95 86 84 91 86 81 76 70 91
60 93 86 87 90 86 80 74 69 90
40 94 87 87 88 84 78 74 68 89
20 95 88 88 89 85 79 75 69 90
4500 100 99 97 91 95 94 88 84 79 97
80 99 96 91 94 93 87 82 76 97
60 97 95 92 94 92 86 80 75 96
40 97 95 93 93 90 85 80 74 95
20 98 96 94 94 91 86 81 75 96
6
3
2
40% WOV 50% WOV
Volume (cfm x 1000)
0 5 10 15 20 25 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.
15
3500
3
4050
4500
60% WOV
70% WOV
80% WOV
90% WOV
®
8 BISW
% WOV = (CFM X 100) / (RPM X 0.378)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 900 100 80 76 65 58 52 50 42 36 64
80 81 76 64 56 50 49 42 34 63
60 80 75 63 56 49 48 42 35 63
40 80 75 62 55 48 48 42 34 62
20 81 76 63 56 49 49 43 35 63
1300 100 85 82 80 68 61 61 53 45 74
80 84 82 77 66 58 58 52 44 72
60 84 83 76 66 57 57 52 43 72
40 84 82 76 64 56 56 52 43 71
20 85 83 77 65 57 57 53 44 72
1800 100 90 85 83 76 69 68 61 54 79
80 90 86 84 74 67 66 59 52 79
60 90 86 83 72 66 64 58 52 78
40 91 88 83 71 65 64 58 52 78
20 92 89 84 72 66 65 59 53 79
2500 100 91 90 88 90 80 78 71 64 89
80 89 89 89 88 77 75 68 62 87
60 94 90 90 87 76 74 66 61 87
40 92 91 90 86 74 73 66 60 86
20 95 92 91 87 75 74 67 61 87
3600 100 98 97 93 96 89 87 81 76 96
80 99 97 93 96 87 86 79 73 95
60 99 96 95 94 86 84 77 71 94
40 100 97 95 92 85 84 78 72 93
20 104 98 96 93 86 85 79 73 95
4500 100 102 102 99 100 96 92 88 82 101
80 103 102 99 99 95 91 85 79 101
60 103 102 100 99 93 89 84 78 100
40 104 103 100 98 92 89 85 78 99
20 107 105 101 99 93 90 86 79 100