Single-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
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)
8
7
6
5
4
3
2
1
BISW-7
1½
1
¾
½
¼
2 30% WOV
20% WOV
40% WOV
1500
2000
2500
3000
3500
0
0 2 4 6 8 10 12
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
900 100 69 60 53 51 49 47 39 31 55
80 69 60 53 51 48 47 39 31 54
60 68 61 53 51 47 47 39 30 54
40 69 60 53 50 47 47 40 31 54
20 70 61 54 51 48 48 41 32 55
1300 100 75 67 65 60 58 56 50 42 64
80 76 67 64 60 57 55 50 41 63
60 76 69 65 60 56 55 50 40 63
40 76 69 65 60 56 56 50 40 63
20 77 70 66 61 57 57 51 41 64
1800 100 84 74 71 69 65 63 57 51 72
80 82 73 73 69 64 62 56 49 71
60 82 74 73 70 64 61 56 49 71
40 82 75 72 70 64 63 57 49 71
20 83 76 73 71 65 64 58 50 72
2500 100 81 78 76 79 74 71 65 60 79
80 82 78 77 79 73 70 64 59 79
60 83 79 80 79 73 70 63 58 79
40 87 80 82 80 74 71 64 58 81
20 87 81 83 81 75 72 65 59 82
3600 100 94 87 83 87 83 80 75 70 88
80 92 85 84 88 83 79 74 69 89
60 91 86 87 90 83 80 74 68 90
40 92 87 88 88 83 81 75 69 89
20 93 88 89 89 84 82 76 70 90
4500 100 98 96 90 91 89 85 81 76 94
80 95 93 90 92 90 85 80 75 94
60 94 93 92 94 90 85 80 75 95
40 95 95 94 94 90 86 81 75 95
20 96 96 95 95 91 87 82 76 96
3
6
50% WOV
Volume (cfm x 1000)
0 2 4 6 8 10 12 14 16 18 20
3
Volume (m /hr x 1000)
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.
13
4050
4500
60% WOV
70% WOV
Sound Power [dB Ref 10 -12 watts]
80% WOV
90% WOV
®
7 BISW
% WOV = (CFM X 100) / (RPM X 0.221)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 900 100 81 74 62 56 51 49 43 35 62
80 80 74 61 55 49 49 42 35 62
60 80 75 61 55 48 49 43 35 62
40 81 75 62 55 48 49 43 34 63
20 82 76 63 56 49 50 44 35 64
1300 100 86 80 78 68 59 59 52 45 72
80 84 81 74 65 57 57 52 43 70
60 85 82 75 64 56 56 52 43 71
40 85 83 75 65 57 57 52 43 71
20 86 84 76 66 58 58 53 44 72
1800 100 88 85 82 75 67 66 60 53 78
80 87 85 82 73 65 64 58 52 77
60 90 86 83 71 65 64 59 52 77
40 90 88 82 71 66 66 60 53 78
20 91 89 83 72 67 67 61 54 79
2500 100 93 89 86 87 78 75 68 62 86
80 93 89 88 85 75 73 67 61 85
60 93 90 89 84 75 73 67 61 85
40 95 92 91 85 75 75 68 62 87
20 96 93 92 86 76 76 69 63 88
3600 100 98 95 92 94 87 85 79 73 94
80 99 95 93 95 86 83 78 72 94
60 99 96 95 96 86 84 78 72 95
40 100 97 96 94 85 84 79 73 94
20 102 98 97 95 86 85 80 74 95
4500 100 102 100 97 98 94 90 85 80 99
80 102 101 98 99 93 89 84 78 99
60 103 101 100 100 94 89 85 79 100
40 104 103 101 99 93 89 85 79 100
20 106 104 102 100 94 90 86 80 101