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Plenum Size
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
7000 1229 2.07 1392 3.36 4.73 1678 6.27
7800 2068 1332 1483 3.94 1620 1747 6.99 1874 8.73
8600 2281 1438 3.06 4.61 1707 6.20 1828 7.86 1943 9.63 11.6
9400 2493 3.69 1799 7.07 1913 8.84 2022 10.7
2127 12.6
2232 14.7
10200 4.42 1777 6.17 1892 8.03 2002 9.92
2106 11.9
13.9
2301 16.0 2399 18.3
11000 2917 1768 1880 7.09 1988 9.11 2094 11.1
2193 13.2
2288 2379 2468 19.7 22.1
11800 3129 1880 6.19 8.13 2088 10.3
2187 12.4
2284 14.6 16.8 2463 19.1 21.4 2630 23.8
12600 3342 1993 7.26
2093 9.30 2190
2282 13.8
2376 16.1 2464 20.9 2632 23.3 2711
13400
2106 8.46
2202 10.6 2293 12.9
2383 2470 17.8 20.2 2638 22.7 2717 27.9
14200 3766
2220 9.76
2312 12.1 2397 14.4 2484 17.0 19.6 2649 22.2 2729 24.8 2806 27.4 2881 30.1
3978 2334 11.2 2423 13.6 16.1 18.7 2666 2744 24.2 2822 26.9 2897 29.7 2969 32.6
4190 2448 12.7 2613 18.0 2690 20.7 2767 2841 26.4 2916 29.3 2990 32.2 3060
RPM 807
Inlet Sound Power, L
8J
<E#SFG
-12
XBUUT>
1234 678L
8J
A
800
100 77 76 69 68 64 48 73
80 77 73 73 67 64 47 70
60 77 73 72 61 48 69
77 74 72 61 48 68
1100
100 81 83 74 74 72 68 80
80 76 80 74 70 67 61 77
60 74 76 82 72 68 77
74 76 82 72 67 76
100 81 81 90 83 80 80 76 68 87
80 82 80 89 80 76 74 69 84
60 81 80 87 78 73 72 67 82
81 80 87 78 73 72 67 82
2100
100 88 88 90 92 89 88 86 82
80 82 87 90 84 79 91
60 83 83 89 90 83 81 76 74 90
83 84 89 91 83 81 76 74 91
100 98 98 100 99 97 92 104
80 89 94 98 96 92 90 86 100
60 90 93 99 90 87 83 100
90 94 96 99 90 87 83 100
RPM 807
Outlet Sound Power, L
8P
<E#SFG
-12
XBUUT>
1234 678L
8P
A
800
100 74 77 79 74 74 71 61 78
80 72 74 77 72 71 67 76
60 72 76 71 69 74
72 76 71 69 74
1100
100 79 83 87 81 80 79 74 63 86
80 78 79 78 78 68 62 83
60 78 78 82 77 76 73 66 62 81
78 78 82 77 76 73 66 62 81
100 83 87 90 88 86 83 77 94
80 83 92 86 84 82 76 71 90
60 83 91 82 79 74 70 88
83 91 82 79 74 70 88
2100
100 92 93 99 97 92 88 102
80 92 90 91 96 94 91 86 81 98
60 91 92 92 94 91 88 83 80 96
92 92 93 94 91 88 83 80 96
100 99 103 103 106 106 104 102 98 111
80 99 101 100 102 103 101 97 92 107
60 98 102 101 102 101 98 94 89
99 102 101 103 101 98 94 89
Plenum Size 22
QEP Class I Maximum rpm
QEP Class II Maximum rpm 2433
QEP Class III Maximum rpm
QEM Maximum rpm 2190
Note: Model QEM does not utilize class designations.
QEP Motor on Frame Limit 254T
Minimum Motor Size 1/2 [hp]
Wheel Diameter
22.25
565
[in.]
[mm]
Peak Power
(rpm / 909)
3
(rpm / 1002)
3
[hp]
[kW]
Wheel Outlet Velocity
cfm / 3.77
m
3
/s / 2.22
[ft/min]
[m/s]
Tip Speed
rpm x 5.83
rpm x 0.0296
[ft/min]
[m/s]
% Wide Open Volume (%WOV)
cfm / (rpm x 0.0672)
m
3
/hr / (rpm x 0.114)
[%]
[%]
Imperial data — Metric data
02468101214161820
0
2
4
6
8
10
12
14
0 5 10 15 20 25 30 35 40
0
5
10
15
20
25
30
35
Volume (cfm x 1000)
3
Volume (m /hr x 1000)
Static Pressure (in. wg)
rpm
hp
% WOV
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E
90%
80%
70%
Static Pressure (Pa x 100)
5
3
1
½
1
7
½
10
15
20
30
2
40
25
3065
2824
2658
2433
1958
1865
1554
1311
1145
1041
909
2190
19
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.
The AMCA International Certified Ratings Seal for Sound for model QEM only applies to the single L
8J
A and L
8P
A values.