QEI-20 Class II
Performance Data
Maximum Fan RPM | 2517 | ||
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Specification Data |
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Maximum Motor | 254T | ||
Frame Size | |||
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Minimum Motor | 1/3 hp | .25 kW | |
Starting hp | |||
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Wheel Diameter | 24.5 in. | 622 mm | |
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Approximate Weight | 360 lbs. | 163 kg. | |
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Maximum Bhp = (Fan RPM / 1038)3
Outlet Velocity (FPM) = CFM / 4.14
Tip Speed (FPM) = Fan RPM x 6.41
%WOV = (CFM x 100) / (Fan RPM x 5.07) Imperial data — Metric data
100)x
Static (PaPressure
20
15
10
5
0
PressureStatic wg).(in
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| 15 | 50% WOV |
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| 60% WOV |
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| Density | 0.075 lb/ft |
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| Density 1.2 kg/m |
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| 70% WOV |
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| 1774 |
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| 90% WOV |
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1½ |
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0 | D |
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| 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
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| Volume (cfm x 1000) |
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0 |
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Performance Data
Volume
(m
3/hr
x 1000)
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| STATIC PRESSURE (inches wg) |
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CFM | OV | 0.5 |
| 1 |
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| RPM |
| BHP | RPM |
| BHP | RPM |
| BHP | RPM |
| BHP | RPM |
| BHP | RPM |
| BHP | RPM |
| BHP | RPM |
| BHP | RPM |
| BHP |
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4500 | 1076 | 1002 |
| 0.74 | 1110 |
| 1.14 | 1319 |
| 2.05 | 1526 |
| 3.15 | 1719 |
| 4.38 |
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5000 | 1196 | 1090 |
| 0.92 | 1189 |
| 1.34 | 1384 |
| 2.34 | 1570 |
| 3.44 | 1750 |
| 4.71 | 1920 |
| 6.10 |
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5500 | 1315 | 1181 |
| 1.13 | 1271 |
| 1.58 | 1451 |
| 2.67 | 1615 |
| 3.75 | 1788 |
| 5.08 | 1951 |
| 6.51 | 2105 |
| 8.04 | 2246 |
| 9.65 |
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6000 | 1435 | 1272 |
| 1.38 | 1355 |
| 1.86 | 1519 |
| 2.99 | 1679 |
| 4.19 | 1833 |
| 5.48 | 1986 |
| 6.95 | 2136 |
| 8.53 | 2277 |
| 10.2 | 2408 |
| 11.9 |
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6500 | 1555 | 1364 |
| 1.66 | 1440 |
| 2.18 | 1589 |
| 3.32 | 1745 |
| 4.67 | 1882 |
| 5.94 | 2031 |
| 7.44 | 2170 |
| 9.05 | 2308 |
| 10.8 | 2439 |
| 12.6 |
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7000 | 1674 | 1457 |
| 1.99 | 1529 |
| 2.54 | 1670 |
| 3.74 | 1813 |
| 5.18 | 1948 |
| 6.53 | 2075 |
| 7.96 | 2214 |
| 9.64 | 2342 |
| 11.4 | 2471 |
| 13.2 |
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7500 | 1794 | 1551 |
| 2.36 | 1619 |
| 2.95 | 1751 |
| 4.20 | 1882 |
| 5.64 | 2015 |
| 7.18 | 2135 |
| 8.64 | 2258 |
| 10.3 | 2386 |
| 12.1 | 2505 |
| 13.9 |
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8000 | 1913 | 1645 |
| 2.77 | 1710 |
| 3.40 | 1834 |
| 4.72 | 1953 |
| 6.14 | 2082 |
| 7.88 | 2201 |
| 9.40 | 2310 |
| 11.0 | 2430 |
| 12.8 |
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8500 | 2033 | 1740 |
| 3.24 | 1801 |
| 3.91 | 1918 |
| 5.28 | 2033 |
| 6.77 | 2151 |
| 8.48 | 2268 |
| 10.2 | 2376 |
| 11.9 | 2477 |
| 13.5 |
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9000 | 2153 | 1835 |
| 3.75 | 1893 |
| 4.48 | 2003 |
| 5.90 | 2115 |
| 7.45 | 2220 |
| 9.12 | 2336 |
| 11.1 | 2443 |
| 12.8 |
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9500 | 2272 | 1930 |
| 4.33 | 1986 |
| 5.10 | 2092 |
| 6.59 | 2197 |
| 8.20 | 2297 |
| 9.89 | 2404 |
| 11.8 | 2510 |
| 13.8 |
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10000 | 2392 | 2026 |
| 4.96 | 2079 |
| 5.78 | 2181 |
| 7.34 | 2280 |
| 9.00 | 2378 |
| 10.7 | 2474 |
| 12.6 |
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Shaded values show where Class I fan selections are more efficient than Class II.
| Inlet Sound Power, LWi | [dB ref |
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RPM | % WOV | 1 | 2 | 3 |
| 4 | 5 | 6 | 7 | 8 | LWiA |
| 100 | 68 | 74 | 67 |
| 66 | 64 | 62 | 49 | 42 | 69 |
700 | 80 | 65 | 70 | 64 |
| 63 | 62 | 60 | 49 | 39 | 66 |
60 | 64 | 68 | 62 |
| 61 | 62 | 61 | 51 | 40 | 66 | |
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| 50 | 76 | 72 | 68 |
| 65 | 62 | 60 | 48 | 40 | 68 |
| 100 | 72 | 80 | 73 |
| 72 | 70 | 71 | 60 | 51 | 76 |
1000 | 80 | 64 | 75 | 69 |
| 68 | 67 | 65 | 56 | 48 | 72 |
60 | 65 | 74 | 67 |
| 67 | 66 | 65 | 57 | 49 | 71 | |
|
| ||||||||||
| 50 | 68 | 74 | 68 |
| 66 | 65 | 65 | 56 | 49 | 71 |
| 100 | 79 | 80 | 82 |
| 81 | 79 | 77 | 79 | 63 | 85 |
1450 | 80 | 73 | 77 | 77 |
| 76 | 75 | 73 | 67 | 59 | 79 |
60 | 75 | 77 | 75 |
| 73 | 72 | 72 | 67 | 61 | 78 | |
|
| ||||||||||
| 50 | 78 | 78 | 77 |
| 74 | 72 | 71 | 67 | 61 | 78 |
| 100 | 82 | 86 | 91 |
| 89 | 87 | 85 | 87 | 78 | 93 |
2000 | 80 | 76 | 80 | 85 |
| 84 | 83 | 80 | 76 | 69 | 87 |
60 | 81 | 83 | 85 |
| 81 | 80 | 78 | 75 | 71 | 86 | |
|
| ||||||||||
| 50 | 84 | 84 | 85 |
| 82 | 79 | 78 | 75 | 71 | 85 |
| 100 | 88 | 89 | 90 |
| 94 | 94 | 90 | 92 | 87 | 99 |
2517 | 80 | 82 | 85 | 86 |
| 90 | 91 | 87 | 82 | 76 | 94 |
60 | 86 | 87 | 85 |
| 89 | 87 | 85 | 80 | 76 | 92 | |
|
| ||||||||||
| 50 | 89 | 90 | 90 |
| 89 | 87 | 85 | 80 | 77 | 92 |
Outlet Sound Power, LWo [dB ref
RPM | % WOV | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | LWoA | |
| 100 | 74 | 76 | 66 | 69 | 67 | 63 | 52 | 43 | 71 | |
700 | 80 | 71 | 73 | 64 | 67 | 66 | 61 | 52 | 44 | 70 | |
60 | 71 | 72 | 63 | 65 | 65 | 61 | 52 | 45 | 69 | ||
| |||||||||||
| 50 | 71 | 72 | 64 | 65 | 65 | 61 | 52 | 46 | 69 | |
| 100 | 80 | 85 | 75 | 76 | 75 | 72 | 63 | 52 | 79 | |
1000 | 80 | 75 | 78 | 70 | 74 | 72 | 68 | 60 | 50 | 76 | |
60 | 76 | 77 | 69 | 71 | 71 | 68 | 60 | 52 | 75 | ||
| |||||||||||
| 50 | 78 | 79 | 71 | 71 | 71 | 68 | 60 | 52 | 75 | |
| 100 | 88 | 86 | 84 | 86 | 83 | 79 | 77 | 63 | 88 | |
1450 | 80 | 84 | 81 | 78 | 82 | 81 | 75 | 70 | 61 | 84 | |
60 | 85 | 80 | 78 | 80 | 79 | 74 | 69 | 62 | 83 | ||
| |||||||||||
| 50 | 86 | 82 | 79 | 79 | 78 | 74 | 69 | 62 | 82 | |
| 100 | 90 | 90 | 92 | 93 | 91 | 87 | 86 | 80 | 96 | |
2000 | 80 | 86 | 87 | 87 | 89 | 89 | 83 | 79 | 73 | 92 | |
60 | 90 | 88 | 87 | 87 | 87 | 82 | 78 | 73 | 90 | ||
| |||||||||||
| 50 | 92 | 90 | 89 | 87 | 86 | 82 | 78 | 73 | 90 | |
| 100 | 95 | 94 | 93 | 97 | 98 | 93 | 92 | 89 | 102 | |
2517 | 80 | 90 | 92 | 89 | 93 | 96 | 90 | 86 | 79 | 98 | |
60 | 95 | 94 | 92 | 90 | 93 | 88 | 85 | 79 | 96 | ||
| |||||||||||
| 50 | 97 | 96 | 93 | 92 | 93 | 88 | 84 | 79 | 96 |
Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to
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