Double-Width Centrifugal Fan Performance Supplement - Greenheck

Static Pressure (Pa x 100)
25
20
15
10
5
0
Class Max RPM
I 3205
II 4180
III 4250
Static Pressure (in. wg)
12
10
8
6
4
2
BIDW-12
2
3
1½
¾
½
1 /3 1800
1300
2300
DO NOT SELECT TO THE LEFT OF THIS SYSTEM CURVE
Inlet Sound Power, Lwi
RPM %WOV 1 2 3 4 5 6 7 8 Lwi A
900 100 68 74 73 72 70 65 58 52 74
80 68 74 73 72 69 65 58 52 74
60 67 69 72 72 69 65 58 51 74
50 67 69 72 72 69 65 58 52 74
40 67 69 72 72 69 64 58 51 73
1300 100 74 78 81 77 73 71 66 58 79
80 71 77 80 74 71 68 62 55 77
60 71 74 75 73 70 67 62 55 75
50 71 74 75 72 71 67 63 55 75
40 72 74 74 72 71 68 63 55 75
1900 100 83 84 87 86 82 78 77 69 88
80 81 81 85 84 79 75 71 64 85
60 80 80 81 83 78 73 70 65 84
50 83 83 81 83 78 73 71 66 84
40 83 83 81 83 79 73 71 66 84
2600 100 92 95 91 97 93 88 88 87 98
80 90 96 89 96 90 85 84 79 96
60 89 93 87 92 88 83 82 77 93
50 89 90 87 91 87 83 81 77 92
40 90 90 87 90 87 83 81 78 92
3800 100 98 98 97 103 100 95 94 95 105
80 96 95 94 100 97 92 90 87 101
60 91 94 93 97 94 90 88 85 99
50 92 96 94 97 93 90 88 86 99
40 91 97 95 98 94 90 88 86 100
4250 100 100 101 99 104 103 98 96 97 107
80 97 98 97 102 100 95 92 90 104
60 93 97 96 99 97 93 90 88 101
50 93 99 97 99 96 92 90 88 101
40 93 99 98 100 97 93 91 88 102
1
5
7½ 10 15
50% WOV
60% WOV
0
0 1 2 3 4 5 6 7 8 9
Volume (cfm x 1000)
0 2 4 6 8 10 12 14
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.
2800
3205
3700
Sound Power [dB Ref 10 -12 watts]
4180
4250
70% WOV
80% WOV
90% WOV
13 ®
12 BIDW
% WOV = (CFM X 100) / (RPM X 2.08)
Outlet Sound Power, Lwo
RPM %WOV 1 2 3 4 5 6 7 8 LwoA 900 100 87 82 75 65 65 62 53 45 72
80 85 78 74 64 65 60 51 44 71
60 83 75 73 63 64 60 51 44 70
50 85 76 73 63 64 60 51 44 70
40 87 77 73 63 64 60 52 44 70
1300 100 93 83 82 74 72 71 64 54 79
80 91 81 80 71 70 67 59 50 77
60 90 80 80 69 69 65 59 51 76
50 92 81 80 69 69 65 59 52 76
40 94 82 80 69 69 65 59 52 76
1900 100 99 90 92 84 80 79 75 67 88
80 96 88 90 82 78 76 70 61 86
60 96 88 90 80 76 73 68 62 84
50 98 87 87 79 76 73 68 63 83
40 100 90 88 79 76 73 68 63 84
2600 100 105 95 94 95 88 87 84 80 96
80 102 92 91 91 86 83 79 71 92
60 102 90 89 90 83 80 75 70 90
50 104 92 90 90 83 80 75 71 91
40 104 94 91 90 83 80 75 72 91
3800 100 111 104 101 104 99 97 94 92 105
80 110 101 98 101 97 94 89 85 102
60 109 99 96 97 93 91 86 82 99
50 109 102 97 97 93 90 86 83 99
40 110 104 100 97 92 89 86 83 99
4250 100 112 107 103 105 102 99 96 95 108
80 112 105 100 102 100 97 92 88 105
60 110 103 98 99 96 93 89 85 101
50 110 105 100 99 96 92 89 85 101
40 111 107 103 100 95 92 89 86 102