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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
10000 1801 1006 1147 1391 8.61 10.8
11000 1981 1076 3.11 1210 1331 7.31 1443 11.8 14.2 1744 16.7
12000 2162 1147 3.64 1277 1390 8.10 1497 10.6 13.0
1693
1787 18.1 20.7
13000 2342 1219 4.24 1344 8.96 11.6
14.2
1743 16.9
1831 19.6 1918 22.4 2000
14000 1294 4.92 1413 7.38 9.92 1614 12.6
1707
1796 18.3 1880 21.2 1962 24.1 2043 27.1
2702 1370 1482 8.27 11.0
13.8
1766 16.8 19.9 1933 22.9 2012 2087 29.1
16000 2882 1447
12.1
1741
18.1 1909 21.4 1988 24.7 27.9 2139 31.2
17000 3063 7.49 1624 10.3
1720 13.4
1807 16.4 1888 19.6 1968 23.0 2046 26.4 2119 30.0 2192 33.4
18000 3243 1603
1696
1790 14.7 17.9 21.2 2029 24.7 2104 28.2 2177 31.9 2246
19000 3423
1681 9.69
1770 12.8
16.1 1943 2020 23.0 2093 30.2 34.0 2303 37.9
20000 3603
1760 11.0
14.2 1930 17.6 2012 21.2 2088 24.8 2226 32.2 2294 36.2 2362 40.2
21000 3783 1840 12.3 1922 2002 19.3 2081 23.0 26.8 2226 30.6 2292
RPM 807
Inlet Sound Power, L
8J
<E#SFG
-12
XBUUT>
1234 678L
8J
A
100 74 88 76 68 67 76
80 73 84 74 63 44 72
60 81 83 66 60 47 42 71
81 83 66 60 47 42 71
900
100 76 83 90 78 74 72 67 60 83
80 87 89 70 67 60 82
60 76 84 83 71 67 64 77
74 83 83 71 66 64 77
1300
100 81 86 100 87 84 82 77 70 93
80 79 99 83 79 77 71 66 91
60 77 82 94 78 73 69 66 86
76 81 91 76 72 71 68 67 84
1700
100 87 89 98 92 89 80 98
80 83 86 92 94 87 84 79 94
60 84 89 91 91 82 79 76 74 91
83 90 92 89 80 78 74 89
2382
100 94 97 101 102 98 94 90 107
80 90 94 97 102 98 93 89 84 102
60 90 96 98 99 93 88 82 99
89 96 99 98 91 86 83 81 98
RPM 807
Outlet Sound Power, L
8P
<E#SFG
-12
XBUUT>
1234 678L
8P
A
100 78 86 77 74 74 71 60 79
80 80 83 73 70 63
60 79 82 74 71 69 62 74
78 83 71 69 69 63 73
900
100 77 90 81 78 72 62 87
80 76 86 87 82 77 72 60 84
60 79 84 80 70 64 62 82
80 83 80 74 69 81
1300
100 84 88 103 92 87 82 98
80 81 87 99 91 88 83 76 71 94
60 83 86 87 84 79 74 71 90
84 86 93 84 82 77 73 71 88
1700
100 89 92 99 104 100 94 90 86 104
80 88 91 96 101 90 84 79 101
60 91 93 94 94 90 84 80 78
94 94 92 88 83 79 77 93
2382
100 100 104 110 109 100 113
80 94 99 102 108 100 94 89 109
60 98 102 102 102 100 90 86 104
100 104 103 100 97 93 88 102
21
Plenum Size 27
QEP Class I Maximum rpm
QEP Class II Maximum rpm 1890
QEP Class III Maximum rpm 2382
QEM Maximum rpm 1701
Note: Model QEM does not utilize class designations.
QEP Motor on Frame Limit 256T
Minimum Motor Size 3/4 [hp]
Wheel Diameter
27.00
686
[in.]
[mm]
Peak Power
(rpm / 678)
3
(rpm / 748)
3
[hp]
[kW]
Wheel Outlet Velocity
cfm / 5.55
m
3
/s / 3.27
[ft/min]
[m/s]
Tip Speed
rpm x 7.07
rpm x 0.0359
[ft/min]
[m/s]
% Wide Open Volume (%WOV)
cfm / (rpm x 0.120)
m
3
/hr / (rpm x 0.204)
[%]
[%]
Imperial data — Metric data
012345
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
HI
S
S
Y
S
T
E
M
C
U
R
V
E
0 5 10 15 20 25 30
0
2
4
6
8
10
12
14
90%
80%
70%
60%
Volume (cfm x 1000)
Volume (m
3
/hr x 10,000)
2382
2107
1890
1701
1450
1159
854
15
10
7½
5
3
2
20
25
30
40
50
0
5
10
15
20
25
30
Static Pressure (in. wg)
Static Pressure (Pa x 100)
rpm
hp
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
% WOV
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.