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Plenum Size
1FSGPSNBODFDFSUJGJFEJTGPSJOTUBMMBUJPOUZQF"'SFFJOMFU'SFFPVUMFU1PXFSSBUJOHT#IQEPOPUJODMVEFUSBOTNJTTJPOMPTTFT1FSGPSNBODFSBUJOHTEPOPUJODMVEF
the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10
-12
XBUUTDBMDVMBUFEQFS".$"*OUFSOBUJPOBM4UBOEBSE7BMVFTTIPXOBSFGPSJOMFU-
8J
, L
8J
A
and outlet L
8P
, L
8P
A sound power levels for installation type A: Free inlet, Free outlet. The A-weighted sound ratings shown have been calculated per AMCA
International Standard 301. Outlet ratings do not include the effects of duct end correction.
CFM OV
STATIC PRESSURE (in. wg)
123456789
RPM #)1 RPM #)1 RPM #)1 RPM #)1 RPM #)1 RPM #)1 RPM #)1 RPM #)1 RPM #)1
70000 2109 449 20.9 33.4 47.0 61.2 633 672 710 106
473 23.8 37.1 610 66.3 81.4 688 97.0 724 113 130 793 147
80000 2410 497 26.9 41.0 630 71.4 668 87.7 104 739 121 774 138 807
30.4 611 60.6 76.9 687 94.0 723 111 129 789 147 821
90000 2711 34.2 49.9 633 66.0 671 82.8 707 101 740 119 774 137 806 836
2862 38.3 616 71.7 692 89.1 726 107 760 127 792 146 823
100000 3012 42.9 640 60.2 678 77.9 714 748 780 134 811 841 871
3163 623 47.8 664 701 736 103 768 123 800 143 830 164 888 206
110000 3314 649 688 72.1 724 91.3 111 790 131 821 173 879 906 218
3464 713 78.6 748 98.7 781 119 812 140 841 161 871 183 899 206 926 229
120000 701 737 772 107 804 128 834 149 863 171 891 194 919 217 241
3766 727 72.0 762 93.0 796 827 137 182 912 940 229
RPM 807
Inlet Sound Power, L
8J
<E#SFG
-12
XBUUT>
1234 678L
8J
A
100 90 79 71 61
80 86 66 47 68
60 86 74 64 62 47 66
82 72 63 47 66
100 98 87 79 81 77 71 60 82
80 94 83 74 73 67 60 76
60 92 81 71 70 62 60 73
94 83 71 70 63 61 74
100 98 103 90 88 86 81 77 73 92
80 96 103 86 83 78 74 71 68 89
60 97 83 79 74 71 70 68
98 99 83 78 74 72 70 69 86
700
100 99 99 98 93 90 86 82 100
80 103 93 87 82 80 77
60 93 101 93 90 82 79 78 77 92
96 93 88 82 80 80 79 93
100 106 110 109 102 98 91 108
80 102 107 106 101 97 91 87 84 103
60 100 104 98 92 87 84 100
101 108 106 97 92 88 86 101
RPM 807
Outlet Sound Power, L
8P
<E#SFG
-12
XBUUT>
1234 678L
8P
A
100 88 82 81 81 73 69 49 81
80 87 78 77 76 69 76
60 83 76 76 66 63
82 76 64 62 74
100 88 87 86 81 78 71 64 87
80 86 84 83 73 67 62 83
60 92 87 84 82 74 70 66 62 82
94 89 88 86 77 72 67 61 86
100 103 98 94 90 87 82 77 97
80 93 101 90 83 78 74 93
60 98 93 88 83 81 70 91
101 98 94 90 84 81 76 71 92
700
100 100 108 107 104 98 92 88
80 97 104 100 93 89 86 82 101
60 99 104 100 97 91 87 83 79 98
102 106 101 96 90 87 82 78 98
100 106 111 114 112 107 103 100 97 113
80 104 109 112 108 103 98 94 91 109
60 106 109 109 100 91 88 107
108 112 111 99 91 87 107
30
Plenum Size 66
QEP Class I Maximum rpm
QEP Class II Maximum rpm
QEP Class III Maximum rpm
QEP Motor on Frame Limit 365T
Minimum Motor Size 7
1
⁄2 [hp]
Wheel Diameter
66.00
1676
[in.]
[mm]
Peak Power
(rpm / 149)
3
(rpm / 164)
3
[hp]
[kW]
Wheel Outlet Velocity
cfm / 33.2
m
3
/s / 19.5
[ft/min]
[m/s]
Tip Speed
rpm x 17.3
rpm x 0.0878
[ft/min]
[m/s]
% Wide Open Volume (%WOV)
cfm / (rpm x 1.81)
m
3
/hr / (rpm x 3.075)
[%]
[%]
Imperial data — Metric data
0123
0
5
10
15
20
25
30
0 2 4 6 8 1012141618
0
2
4
6
8
10
12
14
90%
80%
70%
60%
Static Pressure (in. wg)
Volume (cfm x 10,000)
Volume (m
3
/hr x 100,000)
Static Pressure (Pa x 100)
15
20
30
40
50
25
75
rpm
hp
% WOV
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
60
100
125
150
200
250
300
367
436
510
579
692
755
871
951
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
FT
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E