Transcript
Air Moving Solutions.
MODULAR plenum fans MPQN | MPQS
CATALOG 490 March 2012
PlenumFans
Models
MPQN | MPQS The MPQN and MPQS offer many of the same advantages of the venerable EPQN plenum fan. The MPQN and MPQS can be used as a single fan or in parallel to construct a multiple fan system. By using multiple MPQN fans in parallel, sound power levels in low octave bands can be significantly reduced over alternative fan selections. In addition, considerable axial space savings is achieved over a single fan selection. Twin City Fan & Blower, the world’s largest supplier of plenum fans, offers the Modular Plenum Fan (MPQN), AMCA licensed for sound and air.
Sizes
12'' to 49'' wheel diameters
Performance Inlet View
Airflow to 76,000 CFM Static pressure to 12" w.g.
Classes
Class II available in sizes 122 to 490. Class III available in sizes 182 to 490. See dimensional drawing on page 10.
Fan Application Plenum fans are unhoused fans designed to operate inside of field-fabricated or factory-built air handling units. The fan wheel pressurizes the entire surrounding air plenum in which the fan is installed, allowing air ducts from any direction to be directly connected to the air handling unit enclosure. This design generally saves space by eliminating the fan housing, transitions, and diffusers within the air handling unit.
Drive End View Twin City Fan & Blower certifies that the Model MPQN Plenum Fans shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program. Refer to Catalog 491 for sound power levels.
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Plenum fans have found a ready acceptance in the air conditioning industry. In addition, the construction versatility, adaptability in the direction of the discharges, suitability for internal isolation and application of sound panels, and generally lower cost makes it a very popular fan arrangement. The MPQN and MPQS fans, when used in parallel, can offer further advantages over a standard plenum fan. By using multiple fans in parallel, uniform flow can be achieved with less axial length in a given air handling unit. The use of multiple MPQN fans in parallel can also serve to reduce sound levels, possibly eliminating the need for additional sound attenuation within the unit.
Twin City Fan Catalog 490
Arrangements
Arrangement 4 (Horizontal)
Direct drive Arrangement 4 mounts the fan wheel directly onto the motor shaft. This arrangement provides a compact fan/motor unit which eliminates belt residue and requires less maintenance than other arrangements. For these reasons, Arrangement 4 modular plenum fans are widely used in cleanroom, pharmaceutical, and other critical applications. The MPQN and MPQS can be selected to provide desired performance at direct drive, synchronous, motor speeds. The MPQN and MPQS can also be selected to operate at peak efficiency at non-synchronous motor speeds, through the use of a variable frequency drive (VFD).
Compact & Configurable Design
Space and air-handling unit design are often key considerations in the selection of plenum fans, making the compact, configurable modular Arrangement 4 an ideal choice. The Arrangement 4 configuration places the motor mounting within the framework of the fan itself. This allows for a simple mounting option for an individual modular fan within an air-handling unit. This compact design also allows for easy stacking and configurable mounting and operating modular fans in parallel. FAN SIZE 122 150 165 182 200 222 245 270 300 330 365 402 445 490
1 x 3 Horizontal Layout
MAXIMUM STACKING HEIGHT 3 3 3 3 3 3 3 2 2 2 2 1 1 1
3 x 1 Vertical Layout
©2012 Twin City Fan Companies, Ltd. All rights reserved throughout the world. Catalog illustrations cover the general appearance of Twin City Fan & Blower products at the time of publication and we reserve the right to make changes in design and construction at any time without notice.
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MPQNAdvantage
The MPQN plenum fans offer unique performance features that are beneficial for many sound sensitive and higher pressure applications. The fan system is advantageous by providing uniform air distribution downstream of the fan, allowing for better air distribution through AHU components. The use of multiple fans in parallel allows a shorter AHU (in axial direction of flow), and provides redundancy for critical fan applications. The MPQN features a 12-bladed airfoil wheel versus the 8- to 10-bladed wheels with most other competition. The "Q" in the MPQN designates for Better Noise Quality. Noise quality is a subjective description for noise that is less objectionable. The design provides lower sound power levels at the lower octave bands which are the most difficult to attenuate. Furthermore, the 12-bladed fan impeller offers a higher blade pass frequency. This in turn transfers sound power levels to the higher octave bands (Figure 1), which allows for easier attenuation of the noise. Sound levels are often influenced by the noise occurring at the blade pass frequency (Blade Pass Frequency = RPM x Number of blades/60). In many applications, the use of the MPQN design will move the blade pass frequency from the 2nd octave band to the 3rd octave band. Acoustic silencers will normally perform about 10 dB better in the 3rd band.
Outlet Sound Power Level Comparison Selection Point: 34,000 CFM @ 4"SP
Sound Power Level (LwoA)
100 95 90
n
n
n
n n
n n
85
n
n n n
80
n n
75
n
n
70
n
65 1
2
3
4 5 6 Octave Bands
MPQN 182 (3x3)
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8
EPQN 490
The MPQN offers the benefit of reduced low-frequency casing radiated noise due to the small lattice structure opening and end reflection. The insulated housing absorbs some noise generated by the fan, and the decreased size of the discharge opening results in a degree of attenuation due to end reflection. Figure 1 demonstrates the sound comparison between the single plenum fan and the multi-fan system with 12-bladed wheel and insulated enclosure. The multifan system generates less outlet sound power levels at the lower frequencies.
Figure 1
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With the use of the 12-bladed impeller, sound quality is improved by reducing the change of abrupt sound levels between neighboring octave bands, providing a more balanced sound level across the octave bands. Although the overall A-weighted sound power levels of a nine-bladed fan may be slightly lower, the sound "quality" of the 12-bladed MPQN fan may be desirable for the application as it is more pleasing to the human ear.
Sound Power
1
2
3
4
5
6
7
8
LwoA
MPQN 182 (3 x 3)
92
90
86
86
81
80
77
77
88
EPQN 490
96
97
96
89
88
83
75
69
93
Twin City Fan Catalog 490
ConstructionFeatures
Wheels
High efficiency, non-overloading airfoil wheels are provided on all sizes. Aluminum wheels using extruded aluminum blades are standard, a popular choice for applications requiring precision balance and improved reliability.
Inlet Cones
Heavy-gauge, spun steel inlet cones are closely matched to the wheel intake rim to ensure efficient and quiet operation.
Serviceability
Class II MPQN and MPQS fans feature a bolt-on motor base allowing for easy service by sliding out the motor/impeller assembly.
Structural Frame
Frames are constructed of heavy-gauge steel, continuously welded at all connections for maximum strength and rigidity. Mounting the MPQN and MPQS as a parallel system allows for low vibration levels due to
the unique individual rigid housings and vibration dampening gasket mounted between the fans.
Sound Insulation (MPQN only)
The sheet metal module encloses sound insulation for sound attenuation. Insulation is protected with both a vapor barrier for IAQ (indoor air quality) and galvanized, perforated steel maintaining sound attenuation while preventing insulation shedding on the air path side.
Isolation
Sizes 122-270 are designed to operate at adequate vibration levels where spring isolation is not essential. All sizes are designed to mount directly onto spring isolators when vibration isolation is preferred. Twin City Fan & Blower Engineering can also provide custom vibration isolation solutions for parallel fan systems.
FlowMeasurementSystem Piezometer Ring (Airflow Measuring System) A piezometer ring is available on plenum fans, as well as other Twin City Fan housed fans, as part of an airflow measuring system, based on the principle of a flow nozzle. The inlet cone of the fan is used as the flow nozzle. The flow can be calculated by measuring the pressure drop through the inlet cone. No tubes or sensors are inserted in the high velocity airstream which could obstruct airflow. The system consists of a piezometer ring mounted at the throat and a static pressure tap mounted on the face of the inlet cone. A differential pressure transducer and digital display can also be provided. The pressure drop is measured from the tap located on the face of the inlet cone to the piezometer ring in the throat. The inlet tap is connected to the high-
Piezometer Ring Mounted at Throat of Inlet Cone pressure side of the transducer and the piezometer ring is connected to the low-pressure side. See diagram on right. Based on Twin City Fan laboratory tests, the system was determined to be accurate within +/-5%. Refer to Twin City Fan Engineering Supplement ES-105. NOTE: Twin City Fan does not recommend placement of flow measuring probes inside the fan inlet cone in the path of airflow. These devices create disturbances and unpredictable performance losses. Twin City Fan will not be responsible for loss of performance due to such devices.
Accessories
Inlet Screen
Heavy-gauge barbecue grill style inlet screen that nests in the inlet funnel for personnel protection on non-ducted inlets.
Isolation Gasket
Isolation gaskets designed to separate MPQN or MPQS fans from one other when used in parallel are standard accessories on all MPQN and MPQS fans when specified.
Shaft Grounding Ring (SGR)
Recommended for all MPQN and MPQS fans, a shaft grounding ring is mounted to the motor providing motor bearing protection. By diverting variable frequency drive (VFD) induced stray voltages to ground through the shaft grounding ring instead of the motor bearings, motor life is extended.
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EngineeringData
Maximum RPM, Wheel Weights, & WR2 FAN SIZE
WHEEL DIA. (IN.)
122 150 165 182 200 222 245 270 300 330 365 402 445 490
12.40 13.98 15.75 18.25 20.00 22.25 24.50 27.00 30.00 33.00 36.50 40.25 44.50 49.00
CLASS II MAX. RPM (70°F) 3800 3800 3468 2930 2674 2403 2183 1981 1783 1620 1465 1329 1202 1091
Bare Fan Weights
CLASS III
WT. (LB)
WR2 (LB-FT)
9 12 15 18 21 30 35 40 54 67 79 93 135 164
0.9 1.7 2.9 6.1 7.4 12 21 29 51 76 112 165 253 391
MAX. RPM (70°F) N/A N/A N/A 3767 3438 3090 2806 2546 2291 2083 1884 1708 1545 1403
WT. (LB)
WR2 (LB-FT)
N/A N/A N/A 21 24 34 38 47 58 72 84 98 142 174
N/A N/A N/A 6.2 9.3 15 22 32 52 77 114 166 256 535
FAN SIZE 122 150 165 182 200 222 245 270 300 330 365 402 445 490
WHEEL DIA. (IN.) 12.40 13.98 15.75 18.25 20.00 22.25 24.50 27.00 30.00 33.00 36.50 40.25 44.50 49.00
CLASS II CLASS III 149 173 250 337 423 505 681 810 997 1200 1506 1936 2363 2939
N/A N/A N/A 373 467 555 748 944 1164 1397 1738 2347 2792 3482
NOTE: Weights do not include motor.
PerformanceData Wheel Diameter: 12.40" Outlet Area: 2.40 ft2
122 MPQN/MPQS CFM 1000 1100 1200 1400 1600 1800 2000 2200 2400 2800 3200 3600
1" SP RPM BHP 417 1751 0.25 458 1838 0.28 500 1926 0.31 583 2113 0.39 667 2313 0.49 750 2521 0.61 833 2735 0.75 917 2954 0.91 1000 3176 1.10 1167 3628 1.56 1333 1500 OV
MAXIMUM RPM:
2" SP RPM BHP 2146 0.46 2220 0.51 2297 0.57 2465 0.69 2638 0.82 2818 0.96 3009 1.13 3208 1.33 3413 1.55
3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2612 2760 2921 3092 3266 3447 3636
0.84 0.99 1.15 1.34 1.54 1.77 2.02
3025 3174 3333 3503 3675
1.30 1.50 3405 1.85 1.72 3557 2.11 3765 2.51 1.96 3716 2.39 2.22
CLASS II = 3800
Wheel Diameter: 13.98" Outlet Area: 3.07 ft2
150 MPQN/MPQS CFM 1200 1400 1600 1800 2200 2600 3000 3400 3800 4200 4600 5000
1" SP RPM BHP 391 1502 0.29 456 1621 0.35 521 1744 0.42 587 1875 0.51 717 2156 0.72 847 2450 0.99 978 2755 1.34 1108 3066 1.77 1238 3382 2.30 1369 1499 1629 OV
MAXIMUM RPM:
Fan Efficiency Grade: FEG75 Max. BHP = 0.087 x (RPM / 1000)3
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1960 2068 2185 2427 2689 2969 3259 3558
0.65 0.76 0.88 1.15 1.49 1.90 2.40 2.99
2340 2445 2674 2914 3170 3442 3726
1.11 1.27 1.62 2.02 2.49 3.05 3.71
2679 2889 3123 3364 3618
1.67 2.08 2.56 3.10 3.72
3091 3310 3547 3789
2.57 3279 3.06 3.11 3487 3.67 3656 4.25 3.73 3715 4.36 4.42
CLASS II = 3800
Class II = First white section Class III = Blue shaded section Underlined figures indicate Maximum Static Efficiency
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Fan Efficiency Grade: FEG80 Max. BHP = 0.047 x (RPM / 1000)3
Performance certified is for installation Type A; Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories). Model MPQS is not licensed to bear the AMCA seal.
Twin City Fan Catalog 490
CFM 1500 1700 1900 2100 2500 2900 3300 3700 4500 5300 6100 6900
1" SP RPM BHP 386 1327 0.36 438 1411 0.42 489 1496 0.49 541 1584 0.57 644 1774 0.75 747 1975 0.98 850 2183 1.26 953 2396 1.60 1159 2834 2.49 1365 1571 1777 OV
MAXIMUM RPM:
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1715 1790 1869 2035 2209 2395 2590 3000 3425
0.79 0.90 1.01 1.26 1.55 1.89 2.29 3.31 4.65
2041 2107 2259 2425 2594 2773 3157
1.32 1.47 1.79 2.16 2.56 3.03 4.17
2461 2614 2780 2948 3307
2.33 2.77 3.26 3.79 5.05
2648 2791 2946 3112 3454
1" SP RPM BHP 2500 480 1146 0.62 2800 538 1217 0.72 3100 595 1292 0.83 3400 653 1370 0.96 4000 768 1530 1.26 4600 884 1697 1.62 5200 999 1868 2.07 5800 1114 2043 2.62 7000 1345 2399 4.01 8200 1575 9400 1806 10600 2036 OV
MAXIMUM RPM:
Wheel Diameter: 18.25" Outlet Area: 5.21 ft2
2" SP RPM BHP 1413 1.19 1465 1.34 1524 1.49 1590 1.67 1731 2.07 1883 2.53 2041 3.08 2204 3.72 2541 5.31 2888 7.40 3243 10.06 3604 13.38
1692 1736 1788 1911 2047 2195 2349 2670 3005 3350 3701
CLASS II = 2930
1" SP RPM BHP 3000 480 1045 0.74 3400 544 1117 0.88 3800 608 1194 1.03 4200 672 1273 1.20 4600 736 1354 1.40 5400 864 1522 1.87 6200 992 1695 2.46 7000 1120 1872 3.18 7800 1248 2051 4.05 9400 1504 2417 6.31 11000 1760 12600 2016 OV
MAXIMUM RPM:
2" SP RPM BHP 1289 1.43 1342 1.62 1403 1.84 1471 2.08 1542 2.34 1694 2.94 1853 3.65 2018 4.50 2187 5.50 2536 8.03 2894 11.38 3259 15.67
2.02 2.22 2.43 2.92 3.48 4.13 4.86 6.65 8.93 11.79 15.31
1977 2079 2202 2338 2483 2792 3116 3451
3.25 3.82 4.48 5.22 6.04 8.03 10.51 13.56
2241 2349 2475 2611 2907 3221 3547
OV
3500 4000 4500 5000 6000 7000 8000 9000 10000 12000 14000 16000
452 517 582 646 776 905 1034 1164 1293 1551 1810 2069
MAXIMUM RPM:
2" SP RPM BHP 1141 1.68 1185 1.90 1238 2.16 1297 2.45 1427 3.11 1568 3.90 1714 4.85 1865 5.97 2020 7.29 2338 10.62 2665 15.02 2997 20.64
2398 2492 2605 2734 3016 3322 3641
5.76 6.57 7.49 8.53 10.89 13.75 17.19
2631 2733 2852 3121 3418 3731
7.69 8.68 9.79 12.36 15.40 19.05
2767 2859 2967 3225 3512
Wheel Diameter: 20.00" Outlet Area: 6.25 ft2
8.84 9.92 11.09 13.87 17.11
2980 3081 3325 3602
11.17 12.43 15.38 18.81
3101 3194 3423 3691
12.48 13.83 3411 16.66 16.91 3614 20.06 20.55
Fan Efficiency Grade: FEG71 Max. BHP = 0.672 x (RPM / 1000)3
3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1548 1594 1648 1710 1846 1994 2151 2312 2646 2993 3348
CLASS II = 2674
1" SP RPM BHP 913 0.86 977 1.02 1045 1.20 1116 1.40 1264 1.90 1417 2.53 1576 3.32 1737 4.28 1901 5.44 2234 8.44
4.77 5.50 6.35 7.27 9.44 12.11 15.35
CLASS III = 3767
2.45 2.72 3.01 3.33 4.06 4.90 5.89 7.02 9.80 13.41 17.97
1776 1817 1869 1989 2125 2273 2428 2750 3087 3434
3.67 4.01 4.39 5.23 6.21 7.32 8.58 11.62 15.49 20.31
1982 2021 2125 2250 2388 2536 2849 3176
5.08 5.50 6.45 7.54 8.79 10.17 13.48 17.59
2171 2258 2370 2500 2640 2943 3263
6.68 7.72 8.92 10.29 11.81 15.37 19.75
2386 2488 2608 2741 3033 3346
9.04 10.35 11.83 13.48 17.29 21.93
2514 2603 2713 2840 3120 3427
10.42 11.83 13.40 15.19 19.25 24.15
2714 2816 2935 3206
13.32 15.01 16.90 21.25
2825 2919 3029 3290
14.89 16.69 3116 20.10 18.65 3214 22.29 23.27
CLASS III = 3438
Wheel Diameter: 22.25" Outlet Area: 7.74 ft2
222 MPQN/MPQS CFM
Fan Efficiency Grade: FEG71 Max. BHP = 0.425 x (RPM / 1000)3
3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
200 MPQN/MPQS CFM
2.90 3.40 2954 4.04 3118 4.72 3.95 3103 4.66 3253 5.39 3394 6.12 4.57 3262 5.35 3404 6.14 5.96
CLASS II = 3468
182 MPQN/MPQS CFM
Fan Efficiency Grade: FEG75 Max. BHP = 0.157 x (RPM / 1000)3
PerformanceData
Wheel Diameter: 15.75" Outlet Area: 3.88 ft2
165 MPQN/MPQS
Fan Efficiency Grade: FEG71 Max. BHP = 1.146 x (RPM / 1000)3
3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1379 1415 1461 1574 1701 1839 1982 2129 2436 2752 3076
CLASS II = 2403
2.91 3.22 3.57 4.39 5.35 6.46 7.74 9.22 12.88 17.60 23.56
1617 1711 1826 1953 2090 2232 2527 2835
4.79 5.73 6.85 8.12 9.56 11.21 15.18 20.23
1843 1944 2063 2191 2328 2614 2914
7.15 8.39 9.84 11.44 13.25 17.54 22.91
1971 2060 2168 2289 2419 2698 2990
8.63 10.01 11.58 13.36 15.33 19.95 25.63
2172 2270 2384 2508 2777 3064
11.68 13.38 15.32 17.46 22.37 28.39
2281 2370 2476 2595 2854
13.41 15.24 17.31 19.62 24.86
2391 2469 2566 2679 2930
15.22 17.17 19.34 21.80 27.40
2564 2656 2761 3003
19.12 2757 23.25 21.45 2829 25.77 24.01 2923 28.60 29.94
CLASS III = 3090
Class II = First white section Class III = Blue shaded section Underlined figures indicate Maximum Static Efficiency
Performance certified is for installation Type A; Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories). Model MPQS is not licensed to bear the AMCA seal.
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PerformanceData
Wheel Diameter: 24.50" Outlet Area: 9.38 ft2
245 MPQN/MPQS CFM
OV
4400 5000 5600 6200 7400 8600 9800 11000 12200 14600 17000 19400
469 533 597 661 789 917 1045 1173 1301 1557 1813 2068
1" SP RPM BHP 813 1.02 866 1.21 923 1.41 983 1.64 1110 2.20 1244 2.90 1381 3.76 1519 4.80 1658 6.04 1938 9.19
MAXIMUM RPM:
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1059 1101 1148 1255 1373 1498 1629 1764 2039 2315 2595
2.28 2.57 2.89 3.63 4.51 5.57 6.80 8.26 11.88 16.52 22.41
1264 1302 1391 1494 1608 1729 1856 2122 2396 2671
CLASS II = 2183
3.83 4.24 5.15 6.21 7.44 8.87 10.51 14.52 19.64 25.95
1520 1610 1713 1826 1945 2199 2466 2740
6.76 7.98 9.39 11.00 12.82 17.22 22.71 29.50
1640 1723 1815 1919 2032 2274 2533 2802
OV
5000 5800 6600 7400 8200 9000 10600 12200 13800 17000 20200 23400
439 509 579 650 720 790 931 1071 1211 1492 1773 2054
1" SP RPM BHP 717 1.15 767 1.38 823 1.64 882 1.94 944 2.29 1008 2.68 1142 3.62 1279 4.81 1416 6.26 1695 10.10 1977 15.39
MAXIMUM RPM:
OV
6000 7000 8000 9000 10000 11000 13000 15000 17000 21000 25000 29000
427 498 569 640 711 782 924 1067 1209 1493 1778 2062
MAXIMUM RPM:
947 988 1034 1085 1139 1258 1383 1515 1787 2062 2340
2.64 3.02 3.44 3.90 4.40 5.61 7.05 8.77 13.20 19.11 26.76
1174 1217 1263 1366 1481 1603 1864 2136 2410
5.05 5.64 6.27 7.68 9.37 11.34 16.29 22.81 31.06
1339 1380 1471 1575 1689 1936 2200 2472
7.47 8.22 9.88 11.79 14.00 19.45 26.46 35.31
1489 1572 1666 1772 2007 2261 2529
MAXIMUM RPM:
2103 2188 2280 2491 2726
17.86 20.16 22.66 28.47 35.48
2194 2273 2360 2560 2788
20.10 22.60 2354 25.05 25.26 2439 27.93 2589 33.35 31.39 2629 34.38 2765 40.51 38.76
Fan Efficiency Grade: FEG71 Max. BHP = 3.131 x (RPM / 1000)3
10.25 12.15 14.29 16.73 22.67 30.17 39.58
1668 1755 1852 2076 2321
14.50 16.88 19.52 25.94 33.95
1760 1841 1932 2143 2381
16.91 19.53 22.42 29.25 37.79
1924 2010 2210 2440
22.25 25.38 32.69 41.69
2003 2086 2275 2497
24.99 28.41 2159 31.46 2301 37.73 36.14 2340 39.68 2467 46.92 45.60
Fan Efficiency Grade: FEG71 Max. BHP = 5.296 x (RPM / 1000)3
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 847 884 925 970 1020 1127 1241 1361 1609 1860 2113
3.19 3.66 4.17 4.73 5.37 6.85 8.64 10.78 16.31 23.73 33.33
1052 1090 1132 1225 1330 1441 1678 1926 2176
6.15 6.86 7.65 9.40 11.51 13.96 20.13 28.29 38.67
1201 1238 1320 1414 1518 1743 1984 2232
9.12 10.05 12.10 14.46 17.22 24.03 32.83 43.95
1337 1411 1496 1593 1807 2039 2283
12.54 14.89 17.53 20.60 28.01 37.43 49.23
1498 1577 1665 1869 2093
17.79 20.74 24.03 32.05 42.11
1581 1654 1737 1930 2146
20.72 23.98 27.60 36.18 46.81
1729 1807 1989 2199
27.35 31.24 40.35 51.64
1801 1876 2048 2251
30.75 34.99 1942 38.77 2070 46.50 44.64 2106 48.99 2221 57.98 56.53
CLASS III = 2291
Wheel Diameter: 33.00" Outlet Area: 17.02 ft2
Fan Efficiency Grade: FEG71 Max. BHP = 8.539 x (RPM / 1000)3
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
784 844 915 994 1078 1166 1350 1538 1726 1917
4.10 5.10 6.29 7.70 9.37 11.31 16.15 22.44 30.31 40.11
959 1019 1087 1163 1244 1416 1599 1786 1974
CLASS II = 1620
7.51 9.00 10.70 12.67 14.92 20.35 27.32 35.99 46.53
1116 1176 1243 1318 1481 1655 1838 2025
11.85 13.84 16.06 18.62 24.72 32.26 41.59 52.91
1261 1322 1390 1543 1710 1887 2071
17.11 19.64 22.46 29.13 37.33 47.26 59.25
1341 1398 1461 1604 1764 1935
20.48 23.32 26.46 33.67 42.46 53.04
1471 1529 1663 1817 1983
27.12 30.49 38.28 47.69 58.92
1541 1596 1722 1869 2030
30.98 34.69 43.05 53.02 64.84
1660 1780 1920 2076
38.95 1723 43.30 47.91 1837 52.85 1947 62.96 58.42 1970 63.89 2070 75.21 70.82
CLASS III = 2083
Class II = First white section Class III = Blue shaded section Underlined figures indicate Maximum Static Efficiency
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13.73 15.65 17.77 20.12 25.57 32.21
Wheel Diameter: 30.00" Outlet Area: 14.06 ft2
CLASS II = 1783
1" SP RPM BHP 7000 411 573 1.61 8000 470 604 1.86 9000 529 640 2.16 11000 646 719 2.88 13000 764 805 3.77 15000 882 896 4.89 17000 999 989 6.24 19000 1117 1083 7.85 23000 1352 1272 11.96 27000 1587 1464 17.48 31000 1822 35000 2057 OV
1933 2011 2100 2199 2420 2662
CLASS III = 2546
330 MPQN/MPQS CFM
11.76 13.51 15.46 17.62 22.74 28.99
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
CLASS II = 1981
1" SP RPM BHP 639 1.38 683 1.66 733 1.98 786 2.34 842 2.77 901 3.25 1023 4.42 1147 5.89 1272 7.69 1526 12.48 1783 19.11
1829 1915 2011 2116 2348 2597
Wheel Diameter: 27.00" Outlet Area: 11.39 ft2
300 MPQN/MPQS CFM
8.42 9.85 11.41 13.19 15.20 19.96 25.84 33.02
CLASS III = 2806
270 MPQN/MPQS CFM
Fan Efficiency Grade: FEG71 Max. BHP = 1.926 x (RPM / 1000)3
Performance certified is for installation Type A; Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories). Model MPQS is not licensed to bear the AMCA seal.
Twin City Fan Catalog 490
1" SP RPM BHP 8000 384 499 1.79 9200 442 528 2.11 10400 500 559 2.45 11600 557 594 2.87 14000 673 667 3.83 16400 788 745 5.04 18800 903 826 6.53 23800 1143 1000 10.69 28400 1364 1166 16.12 33200 1595 38000 1826 42800 2056 CFM
OV
MAXIMUM RPM:
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
685 712 772 840 912 1073 1230 1398 1570 1745
4.64 5.20 6.52 8.11 9.97 14.91 21.04 29.34 39.95 53.20
868 926 991 1141 1290 1452 1619 1789
CLASS II = 1465
9.43 11.33 13.54 19.32 26.17 35.20 46.57 60.54
1007 1065 1205 1347 1503 1665 1831
14.72 17.25 23.78 31.42 41.19 53.24 67.93
1082 1137 1266 1401 1552 1710 1872
1" SP RPM BHP 10000 395 457 2.24 11500 454 484 2.64 13000 514 515 3.11 16000 632 581 4.22 19000 751 652 5.61 22000 869 727 7.36 25000 988 804 9.51 28000 1106 882 12.09 34000 1343 1043 18.90 40000 1580 46000 1817 52000 2054 OV
MAXIMUM RPM:
1" SP RPM BHP 12000 388 411 2.70 13800 446 435 3.17 15600 504 461 3.70 17400 562 490 4.33 21000 679 550 5.77 24600 795 615 7.61 28200 911 682 9.86 35400 1144 821 15.94 42600 1377 964 24.49 49800 1610 57000 1842 64200 2075 MAXIMUM RPM:
627 680 741 807 877 950 1102 1258 1418 1581
5.80 7.33 9.19 11.41 14.02 17.09 24.82 34.97 48.05 64.53
769 822 881 945 1013 1156 1307 1462 1621
10.70 12.99 15.64 18.72 22.29 30.89 42.00 56.01 73.46
898 950 1009 1072 1209 1354 1505 1659
17.02 20.05 23.57 27.55 37.25 49.28 64.23 82.42
1016 1070 1129 1259 1398 1545 1697
MAXIMUM RPM:
29.36 37.96 47.53 59.70 74.06
1439 1555 1691 1837
24.65 28.60 33.01 43.61 56.56 72.44 91.71
1077 1129 1183 1307 1442 1585
29.39 33.81 38.56 50.03 64.08 80.95
1185 1237 1354 1484 1623
39.12 44.40 56.63 71.55 89.41
1238 1289 1399 1525 1661
Wheel Diameter: 44.50" Outlet Area: 30.94 ft2
42.92 53.14 65.97 81.23
1493 1603 1735 1877
47.96 1544 53.11 58.77 1651 64.59 1745 76.58 72.32 1778 78.75 1862 91.95 88.28
Fan Efficiency Grade: FEG75 Max. BHP = 23.54 x (RPM / 1000)3
44.59 50.33 63.28 79.10 98.06
1338 1444 1565 1697
56.34 1385 62.45 70.19 1488 77.20 1573 91.47 86.74 1605 94.63 1681 110.47 106.54
Fan Efficiency Grade: FEG75 Max. BHP = 38.85 x (RPM / 1000)3
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
564 586 636 692 752 881 1016 1156 1298 1443
6.97 7.81 9.80 12.19 15.02 22.22 31.85 44.56 60.66 80.86
714 763 817 936 1065 1199 1338 1479
CLASS II = 1202
1" SP RPM BHP 16000 426 387 3.63 18000 480 408 4.19 20000 533 431 4.83 24000 640 481 6.38 28000 746 534 8.26 32000 853 589 10.54 36000 960 645 13.26 44000 1173 761 20.39 52000 1386 881 30.20 60000 1599 68000 1813 76000 2026 OV
1269 1383 1505 1646 1795
CLASS III = 1708
14.13 17.05 20.39 28.72 39.52 53.21 70.60 91.89
829 878 989 1111 1241 1375 1513
22.11 26.01 35.41 47.34 62.24 80.51 102.92
890 936 1039 1156 1281 1412
27.39 31.81 42.20 55.35 71.39 90.87
991 1087 1199 1320 1447
37.80 49.17 63.40 80.69 101.23
1043 1134 1240 1358 1482
43.98 56.36 71.46 90.07 111.9
1180 1281 1394 1515
63.75 1225 71.36 1267 79.05 79.89 1321 88.48 1360 97.16 1436 114.94 99.31 1430 108.83 1465 118.43 1534 138.30 122.36
CLASS III = 1545
Wheel Diameter: 49.00" Outlet Area: 37.52 ft2
490 MPQN/MPQS CFM
25.17 33.06 42.07 53.52 67.05
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
CLASS II = 1329
OV
1204 1325 1454 1600 1753
Wheel Diameter: 40.25" Outlet Area: 25.31 ft2
445 MPQN/MPQS CFM
18.27 21.17 28.34 36.68 47.29 60.13 75.47
CLASS III = 1884
402 MPQN/MPQS CFM
Fan Efficiency Grade: FEG75 Max. BHP = 14.43 x (RPM / 1000)3
PerformanceData
Wheel Diameter: 36.50" Outlet Area: 20.82 ft2
365 MPQN/MPQS
Fan Efficiency Grade: FEG75 Max. BHP = 62.95 x (RPM / 1000)3
2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 9" SP 10" SP 12" SP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
522 562 607 656 707 815 928 1044 1162 1283
8.94 11.05 13.53 16.48 19.85 28.21 39.19 53.24 70.76 92.53
635 673 717 764 864 972 1084 1199 1316
CLASS II = 1091
16.10 19.08 22.63 26.65 36.25 48.51 63.80 82.68 105.54
736 774 817 911 1014 1122 1233 1348
25.06 29.04 33.64 44.49 58.12 74.64 94.53 118.77
829 868 956 1054 1158 1267 1379
35.80 40.94 52.92 67.77 85.57 106.93 132.25
880 917 999 1093 1194 1299
42.82 48.46 61.52 77.60 96.88 119.27
963 1041 1131 1228 1331
56.18 70.41 87.65 108.01 131.99
1082 1167 1262 1362
79.48 97.65 119.48 144.69
1123 1203 1294 1392
89.00 1161 98.40 108.07 1238 118.56 1307 140.27 130.73 1326 142.34 1389 166.37 157.35
CLASS III = 1403
Class II = First white section Class III = Blue shaded section Underlined figures indicate Maximum Static Efficiency
Performance certified is for installation Type A; Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories). Model MPQS is not licensed to bear the AMCA seal.
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DimensionalData
Horizontal, Arr. 4 - Class II G
'ME' MAX APPROX.
D
U
U
'FR' MAX MOTOR G
‘R’ HOLES EQ SP @ ‘S’ (NOTE 3) D
0.63 (NOTE 3)
DRIVE END VIEW
‘V’ TYP
H
NOTES: 1. Horizontal application only. 2. CW rotation is standard, CCW rotation is optional. Rotation is determined by viewing the drive end. 3. Mounting hole pattern typical on inlet and drive end on all four sides. 3/8" diameter mounting hardware suggested. See IOM-110 for fan installation instructions.
INLET END VIEW
4. Model MPQN provides acoustically insulated housing with perforated plate separating insulation from airstream. Model MPQS is identical to MPQN with the exception of the acoustical insulation and perforated plate.
SIZE
G
D
H
'R' PER SIDE
S
U
V
122 150 165 182 200 222 245 270 300 330 365 402 445 490
23.00 25.38 28.06 31.81 34.50 39.81 43.25 46.94 51.50 55.94 61.25 68.81 75.25 81.94
11.50 12.69 14.06 15.94 17.25 19.94 21.63 23.50 25.75 28.00 30.63 34.44 37.63 41.00
20.00 21.00 23.63 27.38 30.00 33.38 36.75 40.50 45.00 49.50 54.75 60.38 66.75 73.50
2 2 3 3 3 3 3 4 4 4 5 5 5 5
16.81 19.19 10.94 12.75 14.13 17.81 19.50 14.25 15.75 17.25 14.25 15.63 17.25 18.94
1.13 1.13 1.13 1.13 1.13 1.75 1.75 1.75 1.75 1.75 2.25 2.25 2.25 2.25
3.13 3.13 3.13 3.13 3.13 2.13 2.13 2.13 2.13 2.13 2.13 3.13 3.13 3.13
'ME' MAX REF 2.25 6.25 4.81 8.56 7.19 5.44 6.84 5.00 5.50 3.25 5.69 3.13 0.13 1.38
MAX 'FR' 184T 213T 215T 254T 254T 256T 284T 286T 324T 326T 405T 405T 405T 444T BC1003160E
DIMENSIONS ARE SUBJECT TO CHANGE. CERTIFIED DRAWINGS AVAILABLE UPON REQUEST.
10
Twin City Fan Catalog 490
PERFORMANCE — Fans shall be tested in accordance with ANSI/AMCA Standard 210 (air performance) and 300 (sound performance) in an AMCA accredited laboratory. Performance ratings (MPQN only) shall conform to AMCA Standard 205 (fan efficiency grade), Publication 211 (air performance) and Publication 311 (sound performance). Fans (MPQN only) shall be licensed to bear the AMCA certified ratings seal for both sound and air, and fan efficiency grade (FEG). Sound certification shall apply to both inlet and outlet sound power levels. Fans shall have a sharply rising pressure characteristic extending through the operating range and continuing to rise beyond the peak efficiency to ensure quiet and stable operation. Fans shall have a non-overloading design with self-limiting horsepower characteristics and shall reach a peak in the normal selection area. All fans shall be capable of operating over the minimum pressure class limits as specified in AMCA Standard 99. CONSTRUCTION — Fans shall be designed without a scroll type housing and shall incorporate a non-overloading type backward inclined airfoil blade wheel, heavy-gauge reinforced steel inlet plate and structural steel frame.
TypicalSpecifications
Fans shall be Model MPQN or MPQS centrifugal plenum (plug) type, as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota.
INSULATION (MPQN Only) — Fans shall be provided with a minimum of 2” acoustical insulation. Insulation shall be protected on the airstream side with a non-friable vapor barrier preventing insulation shedding for IAQ (indoor air quality). Galvanized, perforated steel shall be located on the airstream side of the vapor barrier providing additional protection without sacrificing air and sound performance. FRAME AND INLET PANEL — Inlet panels shall be of heavy-gauge reinforced steel construction. The inlet panel incorporates a removable spun inlet cone designed for smooth airflow into the accompanying inlet retaining ring of the fan wheel. A square, formed lip suitable for attachment of a boot connector shall surround the unit. WHEEL — Wheels shall have a spun non-tapered style blade retaining ring on the inlet side to allow higher efficiencies over the performance range of the fan. Wheels shall have airfoil-shaped extruded aluminum blades. All hollow blade wheels shall be continuously welded around all edges. Wheels shall have twelve blades for better sound quality. All wheels shall be statically and dynamically balanced on precision electronic balancers to a Balance Quality Grade G6.3 per ANSI/AMCA 204 or better. FINISH AND COATING — The entire fan assembly shall be thoroughly degreased and deburred before application of a rust-preventative coating. Aluminum components shall be unpainted. FACTORY RUN TEST — All fans prior to shipment shall be completely assembled and test run as a unit at the specified operating speed or maximum RPM allowed for the particular construction type. Maximum vibration shall be within the limits of ANSI/AMCA 204 Fan Application Category BV-4. Balance readings shall be taken by electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall be maintained and a written copy shall be available upon request. GUARANTEE — The manufacturer shall guarantee the workmanship and materials for its MPQN fans for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first.
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Twin city fan & blower | www.tcf.com Twin City Fan Companies, Ltd. A Twin City Fan Company
.25MWG06/12
5959 Trenton Lane N | Minneapolis, MN 55442 | Phone: 763-551-7600 | Fax: 763-551-7601
