Ventiladores Con Aspas Inclinadas Hacia Atras_8 - [PDF Document] (2024)

BACKWARDINCLINEDWHEELS

DESIGN10A

Bulletin BCF 103

Proven Reliability inIndustrial Environments

and CorrosiveAtmospheres

APPLICATIONS

Chicagos backward inclinedblades are designed to handlecorrosiveor dusty airstreams.Typical applications includeoven circulators,dust collectors,fume exhausters and emissioncontrol systems. TheDesign10A is also suited for hightemperature airstreams to800F. Thesolid steel bladesare ideal for custom appliedcorrosion resistantcoatings.

QUALITY

Design 10A fans are builtunder Chicago Blowers strictIndustrialQuality standards,the same standards as thoseused on Chicagoscustomengineered fans, to assureexceptional performanceandreliability. For applicationassistance, ChicagoBlowerrepresentatives are locatedthroughout North Americaand aroundthe world.

Thirteen Sizes to 73"

Volumes to 125,000 CFM

Pressures to 30" WG

Arrangements 1, 8, 9, 9H

Construction Classes II, III, IV

Temperatures to 800F

Chicagos Design 10A is a rugged multi-purpose centrifugalfanequipped with Backward Inclined wheels suited for harshdutyapplications. With heavier blades to resist erosion andcorrosion,the Design 10A fan provides reliable operation incontaminated airwith minimal maintenance. Similar BI wheels areused in ChicagosSQB fans for alternate duty applications. For cleanairstreams,Chicagos airfoil bladed fans are recommended.

Design10A

Fans with

Backward

Inclined Wheels

2

3CLASS IIMeets specifications for mostgeneral industrialapplications.Features heavy gauge housingswith continuously weldedscroll.Sizes 49 to 73 for pressuresthrough 12". Refer toChicagosSQB fan for smaller sizes.

CLASS IIISame rugged construction asClass II with additionalhousingbracing and wheels reinforcedwith a stiffener ring. Fansareequipped with heavier shaftsand bearings. Sizes 49 to 60forpressures through 14". Refer toChicagos SQB for smallersizes.

CLASS IVStill heavier gauge housings,shafts, bearings and twowheelstiffener rings. Class IV D/10Afans are practical alternativesforinstallations where less efficientradial blades wereconsiderednecessary. Sizes 22-1/4 to 49for pressures through24".

Chicago Blowers wheels feature backward inclined solid steelbladescontinuously welded to a streamlined wheel cone and heavysteelbackplate. The fans can withstand temperatures to 800 whenusedin conjunction with a shaft cooler and shaft seal. These wheelshavetrue non-overloading horsepower characteristics,mechanicalefficiency over 80% and a steep stable pressure curve,ideal forapplications with pressure variations. Should actualsystem pressurereach 30% higher than the pressure anticipated,delivered volumeof the Design 10A would be typically reduced byonly 10%.

Chicagos D/10A performs reliably in many installations thattradi-tionally use radial bladed fans. Backward inclined blades aremoreefficient than radial blades, allowing the use of smaller,lower horse-power motors properly sized for the fans operatinghorsepower. Allclasses of Chicagos BI fans exceed AMCA performancestandards.

Chicago BlowerCorporation certi-fies that the Design10A Fansshown orherein are licensedto bear the AMCASeal. The ratingsshownare based ontests and procduresperformed inaccordance withAMCAPublication 211 and complywith the requirements of theAMCACertified Ratings Program.

Greater EfficiencyMore Economical

DESIG

N10A

IINLET VOLUMECONTROLWhen the fan is used for varyingor partialload applications, theInlet Volume Control (IVC) pro-vides preciseair control andmore efficient operation.Adjustable guide vanespre-spin the incoming air in thesame rotation as the wheeltoproduce the desired volume ofair at the exact pressure.

Vanes are mounted entirely with-in the inlet cone. Automaticcon-trol is achieved by adding an elec-tric or pneumatic actuator.TheIVC is suitable for manual opera-tion to 650F andautomaticoperation to 350F.

PUNCHED FLANGEDINLET/OUTLETFormed ring inlet is punched forinlet duct connection. Heavyangle flange can be welded totheoutlet, either punched orunpunched.

INLET COLLARInlet connection collar is availablefor slipconnection to ductwork ora flexible joint.

INLET SCREENThe welded steel wire protectivescreen mounts withinthe inletcone or outside the Inlet VolumeControl, whenfurnished.

SHAFT SEALA non-contact seal mountedbetween steel plates reducesleak-age through the shaft opening inthe housing.

SHAFT COOLER AND GUARDCast aluminum cooling wheelwith expandedmetal guard raisesthe allowable temperature limit forarrangement 1or 9 fans from300F to 650F. Adding a shaftseal on arrangement 1fansextends the limit to 800F.Refer to page 6 for hightempera-ture/RPM deration factors.

OUTLET DAMPERSDampers offer an economicalalternative to IVCs.However, theyrequire substantially more horse-power at reduced airvolume.Dampers for all fan classes havedouble thickness airfoilblades,and are available with parallel oropposed blade rotatinglouvres.

Dampers have punched flangeson both ends and are suitableformanual or automatic operation. Amatching punched flangedoutletis required for mounting. Alternateconstruction is availablefor dirtyor high temperature applications.

EXTENDED GREASE FITTINGSGrease fittings allow forexternallubricationwithout removal of shaftand bearing guard.

4

Performance andConvenience Options

PLUG TYPE ACCESS DOORBolted, round door is raised 4" off thescroll to provide clearancefor insulation and includesanasbestos-free gasket.

HOUSING DRAINA half coupling is welded to thelowest point of thehousing. Avail-able with or without drain plug.

INLET BOXThe bolt-on inlet box simplifiesductwork connectionwhen astraight horizontal connection isnot feasible. Assuresdependablefan performance when a sharpturn is required at the faninlet.

SHAFT AND BEARING GUARDThe expanded metal guardencloses theshaft and bearings.For easier lubrication, extendedgrease fittingsare recommended.

BELT GUARDThree sides are fully enclosed with expanded metal onthefourth side for ventilation andvisual inspection. Easilyremovedfor drive servicing.

ACCESS DOORThe flush mounted door featuresquick opening tensionclampswith neoprene gasket to 300Fand asbestos-free gasket to800F.

SPLIT HOUSINGSTo facilitate wheel removal, fanscan be furnishedwith horizontalsplit housings. Housing splits arecaulked and boltedwhen the fanis shipped assembled. Split housings are standard onSizes 66 and above.

SPARK RESISTANT CONSTRUCTIONAMCA Type C spark resistantcon-struction substitutes an aluminuminlet cone and adds a drivesidealuminum buffing tube betweenthe wheel, shaft andhousing.Available with all classes and sizes,arrangement 1 and 9,Maximumtemperature is 600F. Not avail-able when the fan isequippedwith an IVC. Requires customer toelectrically groundfan.

UNITARY BASEFan and adjustable motor baseare welded onto aunitary base ofcontinuously welded structuralsteel channel. (Referto page 17for dimensions.)

SPECIAL PAINTAND CORROSIONRESISTANT COATINGSNumerous coatingsare availableto meet the most stringent specifications.

5

DESIG

N10A

High Temperature andAltitude Fan SelectionChicago Design 10AType B Centrifugal Fans areperfectly suited for handling hot gasesfor air at hightemperature applications such as induced draftandindustrial ovens. Fans in arrangements 1. 8. and 9Hare capableof temperatures up to 800F with theaddition of a shaft seal andshaft cooler, whilearrangement 9 (L or R) fans have a maximumtem-perature of 650F. All fans should be operated withinthe maximumRPM limits for each class and theselimits should be derated permaximum allowablespeed, Table III.

Fan capacity tables are based on the fan handlingstandard air at70F and sea level. For operatingconditions other than standard,correct the HP of thefan and check the speed derating limits.

EXAMPLE: Select a fan to handle 45,000 CFM at 5.5"SP at 700F andat 2000 feet altitude.

1. Refer to Table 1. At 700 F and 2000 feet altitude,thecorrection factor is 2.35

2. Corrected SP is 2.35 X 5.5" = 13" SP at 70F andsea level.

3. Using the fan rating tables, selection of the propersize fanis now based on 45,000 CFM at 13" SP.These specifications indicatethat one selectionavailable is the size 40-1/4 Class IV fanwhichshows a performance of 45,000 CFM at 13" SP,requiring 130.7BHP at 1495 RPM.

4. To correct the BHP, divide 130.7 by 2.35 = 55.61BHP, which isthe corrected BHP at 700F and2000 feet altitude.

5. Verify the wheel and shaft maximum speedsusing Table II andTable III.

a. Multiply the class maximum wheel speed fromTable II by theClass IV Wheel Deration Factorfrom Table III. The wheel maximumspeed @ 700F is 2088 RPM x .86 = 1796 RPM. Thenmultiply the maximumshaft speed from Table IIby the Shaft Deration Factor from TableIII. Theshaft maximum speed @ 700F is 2088 x .94= 1963. Thus, themaximum allowable fanspeed is 1796 RPM.

b. Check the above maximum allowable fanspeed against theselected fan RPM. Sincethe fan operating speed of 1495 RPM iswithinsafe limits of the maximum allow-able of 1796 RPM, the 40-1/4 ClassIV fanwill deliver 45,000 CFM at 5.5" SP, 700Fand 2000 feetaltitude requiring 55.61 HP.

1.00.99.93.89.88.86.84.82.81.79.78.77.68

1.00.99.96.95.95.94.93.92.90.88.87.86.83

1.001.001,00.99.98.98.97.97.96.96.95.94.93

C/2,C/3 C/4ShaftAll Cl.

70100200300350400450500550600650700800

Temp.(F)

Temperature Deration Factors

22-1/424-1/2273033

36-1/240-1/444-1/249

54-1/4606673

925836756687621

1035836866749649

11651052951N.A.N.A.

11651052995N.A.N.A.

380029202964277125292271208816871682N.A.N.A.N.A.N.A.

396333983263283126732271208818201705N.A.N.A.N.A.N.A.

FANSIZE Shaft Wheel Shaft Wheel Shaft Wheel

CLASS II CLASS III CLASS IV

TABLE I TEMPERATURE AND ALTITUDE CORRECTION

TABLE II MAXIMUM RPM AT 70 FTABLE III TEMPERATURE/SPEEDDERATION

Correction factors for temperature (F) and altitude (above sealevel): standard air = .075 lbs. per cubic foot at sea level, 29.92barometric pressure and 70 F

Note: For temperature deration only, not for airperformance.

-15070100150200250300350400500600650700800

.79

.871.001.061.151.251.341.431.531.621.812.002.092.192.38

.81

.881.021.081.171.271.361.461.561.651.842.042.132.232.42

.82

.901.041.101.191.291.391.491.581.681.882.072.172.272.48

.84

.921.061.121.221.321.411.511.611.711.912.112.212.312.51

.85

.931.081.141.241.341.441.541.641.751.952.152.252.352.56

.87

.951.101.161.261.361.471.571.671.781.982.192.292.402.60

.88

.971.121.181.281.391.491.601.701.812.022.232.342.442.65

.90

.991.141.201.311.421.521.631.741.842.062.272.382.492.70

.961.001.161.221.331.441.551.661.771.882.102.322.432.532.75

1.001.041.201.271.381.501.611.721.841.952.182.402.522.632.86

AIRTEMP(F)

029.92

50029.38

100028.86

150028.33

200027.82

250027.31

300026.82

350026.32

400025.84

500024.90

ALTITUDE (feet) with BAROMETRIC PRESSURE (HG)

Refer to Chicago Blowersfan.net for performance, fan curves andsound data. For software and assistance, contact yourlocal ChicagoBlowersales engineer.

Standard Wheel

For these sizes and classes consult Chicagos SQB FanBulletin

6

DESIG

N10A

13000 3693 2078 27.97 2135 30.17 2191 32.37 2245 34.57 229936.79 2404 41.40 2513 46.43 13250 3764 2095 28.74 2152 30.99 220733.23 2262 35.47 2315 37.72 2418 42.34 2523 47.29 13500 3835 211429.53 2169 31.82 2224 34.10 2278 36.38 2331 38.67 2433 43.32 253548.23 13750 3906 2132 30.34 2187 32.66 2241 34.99 2295 37.31 234739.64 2448 44.34 2548 49.24 2651 54.55

14000 3977 2150 31.16 2205 33.52 2259 35.89 2312 38.26 236340.62 2464 45.38 2562 50.29 2661 55.52 14250 4048 2169 32.00 222334.39 2276 36.80 2329 39.21 2380 41.62 2480 46.45 2576 51.38 267356.58 2775 62.30 14500 4119 2188 32.86 2242 35.29 2294 37.73 234640.18 2397 42.64 2496 47.54 2592 52.52 2686 57.70 2783 63.25 147504190 2207 33.74 2260 36.19 2312 38.68 2364 41.17 2414 43.67 251248.65 2607 53.68 2700 58.86 2794 64.35

15000 4261 2226 34.64 2279 37.12 2331 39.64 2381 42.17 243144.71 2529 49.78 2623 54.88 2715 60.08 2806 65.54 2902 71.44 152504332 2246 35.57 2298 38.07 2349 40.62 2399 43.19 2449 45.77 254550.92 2639 56.09 2730 61.33 2819 66.78 2911 72.56 15500 4403 226536.52 2317 39.05 2368 41.62 2418 44.22 2467 46.84 2562 52.09 265557.33 2745 62.62 2833 68.07 15750 4474 2285 37.49 2336 40.04 238742.64 2436 45.28 2485 47.93 2579 53.26 2672 58.59 2761 63.95 284869.41

16000 4545 2305 38.48 2356 41.06 2406 43.68 2455 46.35 250349.04 2597 54.45 2688 59.86 2777 65.29 2863 70.79 16250 4616 232539.50 2375 42.10 2425 44.75 2473 47.44 2521 50.17 2614 55.66 270561.16 2793 66.66 2879 72.21 16500 4688 2345 40.55 2395 43.17 244445.84 2492 48.56 2540 51.32 2632 56.88 2722 62.47 2809 68.04 289573.66 16750 4759 2365 41.62 2415 44.26 2464 46.96 2511 49.70 255852.49 2650 58.12 2739 63.80 2826 69.45 2911 75.14

17000 4830 2386 42.72 2435 45.38 2483 48.10 2531 50.87 257753.68 2668 59.38 2756 65.14 2843 70.88 17250 4901 2406 43.84 245546.52 2503 49.26 2550 52.05 2596 54.89 2686 60.66 2774 66.49 285972.33 17500 4972 2427 45.00 2475 47.69 2523 50.45 2569 53.27 261556.13 2705 61.96 2791 67.87 2876 73.79 17750 5043 2448 46.18 249648.89 2543 51.67 2589 54.51 2634 57.40 2723 63.29 2809 69.26 289475.27

18000 5114 2469 47.38 2516 50.12 2563 52.92 2609 55.78 265458.69 2742 64.63 2827 70.68 2911 76.77 18250 5185 2491 48.62 253751.38 2583 54.20 2629 57.08 2673 60.01 2761 66.00 2846 72.12 185005256 2513 49.89 2558 52.66 2603 55.50 2649 58.40 2693 61.35 278067.40 2864 73.57 19000 5398 2556 52.51 2600 55.32 2645 58.20 268961.14 2733 64.13 2818 70.27 2901 76.56

19500 5540 2601 55.25 2644 58.10 2687 61.02 2730 64.00 277367.03 2857 73.25 20000 5682 2646 58.11 2688 61.01 2729 63.96 277166.98 2813 70.05 2897 76.36 20500 5824 2692 61.11 2732 64.04 277367.03 2814 70.09 2855 73.20 21000 5966 2739 64.23 2778 67.20 281770.23 2857 73.33 2897 76.48

21500 6108 2787 67.47 2824 70.49 2862 73.57 2900 76.70 220006250 2834 70.83 2871 73.92 2907 77.04 22500 6392 2883 74.38 291877.49

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP

SIZE 2222--11//44CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPMCLASS IV 3600

24 In. Wheel Diameter 2.90 Sq. Ft. Outlet Area

Peak BHP = 1.937(RPM1000)3Tip Speed (fpm) = 6.28 x RPM

SIZE 2244--11//22CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPMCLASS IV 2920

26-7/16 In. Wheel Diameter 3.52 Sq. Ft. Outlet Area

Peak BHP = 3.142(RPM1000)3Tip Speed (fpm) = 6.92 x RPM

Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

7

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP10750 3707 2292 23.16 2355 24.982416 26.80 2477 28.62 2536 30.46 2651 34.25 2770 38.3811000 37932316 23.94 2378 25.80 2439 27.66 2498 29.52 2557 31.39 2670 35.212784 39.27 11250 3879 2341 24.74 2402 26.64 2462 28.54 2521 30.442578 32.35 2690 36.21 2801 40.25 2916 44.6711500 3966 2365 25.562426 27.49 2485 29.44 2543 31.39 2600 33.33 2711 37.24 2819 41.282929 45.60

11750 4052 2390 26.40 2450 28.37 2508 30.35 2566 32.34 262234.33 2733 38.31 2839 42.38 2945 46.66 3057 51.3612000 4138 241627.26 2475 29.26 2532 31.28 2589 33.32 2645 35.35 2754 39.40 285943.51 2963 47.78 3068 52.3412250 4224 2441 28.15 2500 30.18 255732.24 2613 34.31 2668 36.38 2776 40.52 2880 44.69 2982 48.97 308453.48 3192 58.4412500 4310 2467 29.06 2525 31.12 2581 33.21 263735.32 2691 37.43 2798 41.66 2901 45.90 3002 50.20 3101 54.69 320359.48

12750 4397 2493 30.00 2550 32.09 2606 34.21 2661 36.35 271538.50 2820 42.82 2923 47.13 3022 51.49 3119 55.97 3218 60.70130004483 2520 30.98 2576 33.08 2631 35.23 2686 37.40 2739 39.59 284343.99 2945 48.39 3043 52.81 3139 57.31 3235 62.0213250 4569 254631.98 2602 34.10 2657 36.28 2711 38.48 2763 40.71 2867 45.19 296749.67 3065 54.16 3160 58.70 3253 63.4013500 4655 2573 33.01 262835.16 2682 37.35 2736 39.58 2788 41.84 2890 46.40 2989 50.97 308655.53 3180 60.14 3272 64.84

13750 4741 2600 34.07 2655 36.24 2708 38.46 2761 40.71 281343.00 2914 47.63 3012 52.29 3108 56.93 3202 61.60 3293 66.34140004828 2627 35.16 2681 37.35 2735 39.59 2787 41.87 2838 44.19 293848.89 3035 53.63 3130 58.36 3223 63.10 3313 67.8914250 4914 265536.29 2708 38.50 2761 40.76 2813 43.07 2863 45.41 2963 50.17 305954.99 3153 59.81 3245 64.63 3335 69.4814500 5000 2683 37.45 273539.68 2787 41.96 2839 44.29 2889 46.65 2987 51.48 3083 56.37 317661.28 3267 66.18 3356 71.09

14750 5086 2711 38.64 2763 40.89 2814 43.20 2865 45.54 291547.93 3012 52.81 3107 57.77 3199 62.77 3289 67.75 3378 72.74150005172 2739 39.87 2790 42.14 2841 44.46 2891 46.83 2941 49.24 303754.17 3131 59.21 3222 64.28 3312 69.35 3399 74.4215500 5345 279842.44 2847 44.74 2896 47.10 2945 49.51 2994 51.97 3088 56.99 318062.14 3270 67.36 3358 72.61 3444 77.8516000 5517 2857 45.14 290447.49 2952 49.89 2999 52.33 3047 54.83 3140 59.95 3231 65.20 331970.56 3405 75.96 3490 81.38

16500 5690 2918 48.00 2963 50.39 3009 52.82 3055 55.31 310157.84 3193 63.04 3282 68.40 3369 73.87 3453 79.41 3536 84.99170005862 2979 51.01 3023 53.44 3067 55.91 3112 58.44 3157 61.01 324666.29 3334 71.73 3419 77.31 3503 82.98 3584 88.7117500 6034 304254.18 3084 56.65 3126 59.16 3169 61.73 3213 64.34 3300 69.70 338675.22 3470 80.89 3553 86.6818000 6207 3106 57.51 3146 60.02 318762.58 3228 65.18 3270 67.83 3355 73.26 3440 78.87 3523 84.63

18500 6379 3170 61.00 3209 63.55 3248 66.15 3288 68.80 332971.49 3411 77.00 3494 82.68 3575 88.5219000 6552 3236 64.66 327367.23 3311 69.90 3349 72.59 3389 75.32 3468 80.91 3549 86.67195006724 3302 68.49 3338 71.14 3374 73.83 3412 76.56 3449 79.33 352684.9920000 6897 3369 72.50 3403 75.20 3438 77.91 3474 80.70 351183.52 3585 89.26

20500 7069 3436 76.68 3470 79.43 3504 82.21 3538 85.03 357387.8921000 7241 3504 81.03 3536 83.85 3569 86.69

CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP

13000 3044 1748 26.1 1806 28.4 1866 30.9 13500 3162 1772 27.41827 29.7 1883 32.2 1941 34.8 14000 3279 1796 28.8 1850 31.1 190433.6 1958 36.1 2014 38.9 14500 3396 1820 30.2 1874 32.6 1927 35.11979 37.7 2031 40.3

15000 3513 1845 31.6 1899 34.1 1951 36.7 2001 39.3 2052 41.92154 47.615500 3630 1871 33.1 1924 35.7 1975 38.3 2025 41.0 207443.7 2171 49.2 16000 3747 1898 34.6 1949 37.3 2000 40.0 2049 42.82097 45.5 2192 51.1 2287 57.1 16500 3864 1925 36.2 1975 39.0 202541.8 2074 44.6 2121 47.4 2214 53.0 2305 59.0 2402 65.6

17000 3981 1953 37.9 2002 40.7 2051 43.6 2099 46.5 2146 49.32237 55.1 2326 61.1 2416 67.4 17500 4098 1981 39.5 2030 42.5 207845.4 2125 48.4 2171 51.3 2261 57.3 2348 63.3 2434 69.6 252376.418000 4215 2009 41.3 2057 44.3 2105 47.3 2151 50.4 2196 53.42285 59.5 2371 65.6 2455 71.9 2540 78.6 18500 4333 2038 43.1 208646.2 2132 49.3 2178 52.4 2223 55.5 2310 61.8 2395 68.0 2478 74.42559 81.0 2642 88.0

19000 4450 2068 45.1 2114 48.1 2160 51.3 2205 54.5 2249 57.72336 64.1 2420 70.5 2501 77.0 2580 83.6 2660 90.6 19500 4567 209747.0 2143 50.2 2189 53.4 2233 56.6 2276 59.9 2361 66.5 2444 73.12525 79.7 2603 86.4 2680 93.320000 4684 2127 49.1 2173 52.3 221755.5 2261 58.8 2304 62.2 2388 68.9 2469 75.7 2549 82.4 2627 89.32702 96.2 20500 4801 2158 51.3 2202 54.5 2246 57.8 2290 61.1 233264.5 2415 71.4 2495 78.3 2574 85.3 2650 92.2 2725 99.2

21000 4918 2188 53.5 2232 56.8 2276 60.1 2319 63.5 2360 66.92442 74.0 2521 81.1 2599 88.2 2675 95.3 2749 102.4 21500 5035 222055.8 2263 59.1 2306 62.5 2348 66.0 2389 69.5 2470 76.6 2548 83.82624 91.1 2699 98.4 2773 105.722000 5152 2252 58.3 2294 61.6 233665.0 2377 68.5 2418 72.0 2498 79.3 2575 86.7 2651 94.1 2724 101.62797 109.0 22500 5269 2284 60.8 2325 64.2 2366 67.6 2407 71.1 244874.7 2526 82.1 2603 89.6 2677 97.2 2750 104.8 2822 112.4

23000 5386 2317 63.4 2357 66.8 2397 70.3 2437 73.9 2477 77.52555 84.9 2630 92.6 2704 100.3 2776 108.1 2847 115.9 23500 55042350 66.1 2389 69.6 2428 73.1 2468 76.7 2507 80.4 2584 87.9 265995.6 2731 103.5 2803 111.4 2827 119.424000 5621 2384 69.0 2422 72.42460 76.0 2499 79.7 2537 83.4 2613 91.0 2687 98.8 2759 106.8 2829114.9 2898 123.024500 5738 2418 71.9 2455 75.4 2492 79.0 2530 82.72568 86.4 2643 94.1 2716 102.0 2787 110.1 2857 118.4 2925 126.6

25000 5855 2453 74.9 2488 78.5 2525 82.1 2562 85.8 2599 89.62673 97.4 2745 105.4 2815 113.6 2884 121.9 2952 130.425500 59722488 78.0 2523 81.7 2558 85.3 2594 89.1 2630 92.9 2703 100.8 2774108.9 2844 117.2 2912 125.626000 6089 2523 81.3 2557 84.9 2592 88.72627 92.5 2662 96.3 2733 104.2 2804 112.4 2873 120.8 2940129.426500 6206 2559 84.6 2592 88.3 2626 92.1 2660 95.9 2694 99.82764 107.8 2834 116.1 2902 124.6

27000 6323 2595 88.1 2627 91.8 2660 95.6 2693 99.5 2727 103.52796 111.5 2864 119.9 2932 128.4 27500 6440 2631 91.7 2663 95.52695 99.3 2727 103.2 2760 107.2 2827 115.4 2895 123.8 2961 132.428000 6557 2668 95.4 2698 99.2 2730 103.1 2761 107.1 2794 111.12859 119.3 2925 127.8

18000 3147 1656 37.1 1707 40.2 1760 43.5 1812 47.0 1864 50.718500 3234 1674 38.5 1723 41.6 1774 44.9 1825 48.4 1876 52.0 190003322 1693 40.0 1741 43.2 1789 46.4 1839 49.8 1889 53.4 19500 34091713 41.6 1759 44.7 1806 48.0 1854 51.4 1902 55.0 1999 62.7

20000 3497 1734 43.2 1779 46.4 1824 49.7 1870 53.1 1917 56.72011 64.2 20500 3584 1755 44.9 1799 48.1 1843 51.5 1887 54.9 193258.4 2024 65.9 2116 74.2 21000 3671 1777 46.7 1820 50.0 1862 53.31905 56.7 1949 60.3 2038 67.8 2128 75.9 21500 3759 1799 48.6 184151.8 1882 55.2 1924 58.7 1966 62.2 2053 69.7 2141 77.7 222886.5

22000 3846 1822 50.5 1863 53.8 1903 57.2 1944 60.7 1985 64.22068 71.7 2154 79.7 2240 88.4 22500 3934 1845 52.4 1885 55.8 192559.3 1964 62.8 2004 66.4 2085 73.9 2168 81.8 2252 90.4 2335 99.623000 4021 1868 54.4 1908 57.9 1947 61.4 1985 64.9 2024 68.6 210376.1 2183 84.0 2265 92.5 2347 101.7 23500 4108 1892 56.6 1930 60.01969 63.6 2007 67.2 2045 70.8 2121 78.4 2199 86.4 2279 94.8 2360103.8 2439 113.5

24000 4196 1915 58.7 1954 62.3 1991 65.9 2029 69.5 2066 73.22140 80.8 2216 88.8 2294 97.2 2373 106.1 2451 115.724500 4283 193960.9 1977 64.6 2014 68.2 2051 71.9 2087 75.6 2160 83.3 2234 91.32309 99.7 2386 108.6 2464 118.1 25000 4371 1963 63.2 2001 66.9 203770.6 2074 74.4 2109 78.2 2181 85.9 2253 93.9 2326 102.4 2400 111.22476 120.6 25500 4458 1988 65.6 2024 69.3 2061 73.1 2096 76.9 213280.7 2202 88.6 2272 96.7 2343 105.1 2416 114.0 2490 123.3

26000 4545 2012 68.0 2049 71.8 2084 75.7 2119 79.5 2154 83.42223 91.3 2292 99.5 2361 108.0 2432 116.8 2504 126.126500 4633 203770.5 2073 74.4 2108 78.3 2143 82.2 2177 86.2 2245 94.2 2312 102.42380 110.9 2449 119.8 2519 129.027000 4720 2062 73.0 2097 77.0 213281.0 2167 85.0 2200 89.0 2267 97.1 2333 105.4 2400 114.0 2467 122.82535 132.1 27500 4808 2087 75.7 2122 79.7 2156 83.8 2190 87.8 222491.9 2290 100.1 2355 108.5 2420 117.1 2485 126.0 2552 135.3

28000 4895 2112 78.4 2146 82.5 2181 86.6 2214 90.7 2247 94.82313 103.2 2377 111.7 2440 120.4 2504 129.3 2569 138.628500 49832138 81.1 2172 85.3 2205 89.5 2238 93.7 2271 97.9 2336 106.4 2399114.9 2461 123.7 2524 132.7 2587 142.029000 5070 2163 84.0 219788.2 2230 92.5 2263 96.8 2295 101.0 2359 109.6 2421 118.3 2483127.1 2544 136.2 2606 145.6 29500 5157 2189 86.9 2222 91.2 225595.5 2287 99.9 2319 104.2 2382 112.9 2444 121.7 2504 130.7 2565139.8 2626 149.2

30000 5245 2215 89.8 2248 94.3 2280 98.7 2312 103.1 2343 107.52406 116.3 2467 125.3 2527 134.3 2586 143.5 2646 153.030500 53322242 92.9 2273 97.4 2305 101.9 2336 106.4 2368 110.9 2429 119.82490 128.9 2549 138.0 2608 147.3 2666 156.931000 5420 2268 96.02299 100.6 2330 105.2 2362 109.7 2392 114.3 2453 123.4 2513 132.62572 141.8 2629 151.2 2687 160.8 31500 5507 2295 99.2 2325 103.92356 108.5 2387 113.2 2417 117.8 2477 127.1 2537 136.4 2594 145.72651 155.2 2708 164.9

32000 5594 2321 102.5 2352 107.2 2382 112.0 2412 116.7 2442121.4 2502 130.8 2560 140.2 2617 149.7 2674 159.3 2730 169.1 325005682 2348 105.8 2378 110.7 2408 115.5 2438 120.3 2467 125.1 2526134.6 2584 144.2 2641 153.8 2696 163.5 2752 173.4 33000 5769 2375109.3 2405 114.2 2434 119.1 2463 124.0 2493 128.8 2551 138.5 2608148.2 2664 158.0 2719 167.8

SIZE 2277CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPM CLASS IV2964

29-1/8 In. Wheel Diameter 4.27 Sq. Ft. Outlet Area

Peak BHP = 5.10(RPM1000)3Tip Speed (fpm) = 7.62 x RPM

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

SIZE 3300CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPM CLASS IV2771

32-3/8 In. Wheel Diameter 5.72 Sq. Ft. Outlet Area

Peak BHP = 8.36(RPM1000)3Tip Speed (fpm) = 8.48 x RPM

Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

8

23000 3605 1549 48.9 1592 52.8 1636 56.7 1681 60.9 1726 65.223750 3723 1572 51.4 1613 55.2 1655 59.2 1698 63.3 1742 67.6 182976.9 24500 3840 1596 53.9 1636 57.8 1676 61.8 1717 65.9 1759 70.21844 79.4 1928 89.5 25250 3958 1620 56.6 1659 60.5 1698 64.5 173768.7 1777 73.0 1859 82.1 1941 92.0

26000 4075 1646 59.4 1683 63.4 1721 67.5 1759 71.6 1798 76.01876 85.0 1956 94.8 2035 105.5 26750 4193 1672 62.3 1708 66.4 174570.5 1782 74.7 1819 79.1 1894 88.1 1971 97.8 2049 108.3 27500 43101698 65.4 1734 69.5 1770 73.7 1805 78.0 1841 82.3 1914 91.5 1988101.1 2064 111.4 2139 122.6 28250 4428 1725 68.5 1760 72.7 179577.0 1830 81.3 1864 85.8 1934 94.9 2006 104.6 2079 114.8 2153 125.82225 137.6

29000 4545 1752 71.8 1786 76.1 1821 80.5 1855 84.9 1888 89.41956 98.6 2025 108.3 2096 118.5 2168 129.3 2239 140.9 29750 46631779 75.3 1813 79.6 1847 84.1 1880 88.6 1913 93.1 1979 102.4 2046112.1 2114 122.4 2183 133.1 2253 144.5 30500 4781 1807 78.8 184083.3 1873 87.8 1906 92.4 1938 97.0 2003 106.4 2067 116.2 2133 126.42200 137.2 2268 148.5 31250 4898 1834 82.5 1868 87.1 1900 91.7 193296.3 1964 101.0 2027 110.6 2090 120.4 2153 130.7 2218 141.4 2284152.7

32000 5016 1863 86.3 1895 91.0 1927 95.7 1959 100.4 1990 105.22052 114.9 2113 124.9 2175 135.2 2237 145.9 2301 157.2 32750 51331891 90.2 1923 95.0 1955 99.8 1986 104.6 2016 109.5 2077 119.4 2137129.4 2197 139.8 2258 150.6 2319 161.9 33500 5251 1920 94.2 195199.2 1982 104.1 2013 109.0 2043 114.0 2103 124.0 2161 134.2 2220144.7 2279 155.5 2339 166.8 34250 5368 1949 98.4 1980 103.5 2010108.5 2040 113.5 2070 118.6 2129 128.8 2186 139.1 2244 149.7 2301160.7 2359 171.9

35000 5486 1978 102.8 2008 107.9 2038 113.1 2068 118.2 2098123.4 2155 133.7 2212 144.2 2268 154.9 2324 166.0 2381 177.3 357505603 2008 107.2 2037 112.5 2067 117.7 2096 123.0 2125 128.3 2182138.8 2238 149.5 2293 160.4 2348 171.5 2403 182.9 36500 5721 2037111.8 2066 117.2 2095 122.6 2124 127.9 2153 133.3 2209 144.1 2264154.9 2318 165.9 2372 177.2 2426 188.7 37250 5839 2067 116.5 2096122.1 2124 127.6 2153 133.0 2181 138.5 2236 149.5 2290 160.5 2344171.7 2397 183.0 2449 194.6

38000 5956 2098 121.4 2126 127.1 2154 132.7 2181 138.3 2209143.9 2264 155.1 2317 166.3 2370 177.6 2422 189.1 2473 200.8 387506074 2128 126.5 2155 132.2 2183 138.0 2210 143.7 2237 149.4 2291160.8 2344 172.2 2396 183.7 2447 195.4 2498 207.239500 6191 2159131.7 2186 137.5 2213 143.4 2239 149.2 2266 155.1 2319 166.7 2372178.3 2423 190.0 2473 201.8 2523 213.8 40250 6309 2190 137.0 2216143.0 2242 149.0 2269 154.9 2295 160.9 2347 172.7 2399 184.6 2450196.4 2499 208.4

41000 6426 2221 142.5 2247 148.6 2272 154.7 2298 160.8 2324166.9 2376 178.9 2427 191.0 2477 203.1 2526 215.2 41750 6544 2252148.2 2277 154.4 2303 160.6 2328 166.8 2354 173.0 2404 185.3 2455197.6 2504 209.9 42500 6661 2283 154.0 2308 160.4 2333 166.7 2358173.0 2383 179.3 2433 191.8 2483 204.343250 6779 2315 160.0 2339166.5 2364 172.9 2388 179.3 2413 185.7 2462 198.5 2511 211.3

44000 6897 2346 166.1 2371 172.7 2395 179.3 2419 185.9 2443192.4 2491 205.4 44750 7014 2378 172.5 2402 179.2 2426 185.9 2450192.6 2473 199.2 2521 212.5 45500 7132 2410 179.0 2434 185.8 2457192.6 2480 199.4 2504 206.2

SIZE 3333CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPM CLASS IV2529

35-9/16 In. Wheel Diameter 6.38 Sq. Ft. Outlet Area

Peak BHP = 13.36(RPM1000)3Tip Speed (fpm) = 9.31 x RPM

SIZE 3366--11//22CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPMCLASS IV 2271

39-3/8 In. Wheel Diameter 7.80 Sq. Ft. Outlet Area

Peak BHP = 24.17(RPM1000)3Tip Speed (fpm) = 10.31 x RPM

Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

9

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

27500 3526 1346 56.9 1391 61.9 1436 67.2 1480 72.5 1522 77.71596 88.1 1672 99.1 28250 3622 1359 58.9 1403 64.0 1446 69.2 149074.6 1532 80.1 1608 90.8 1679 101.6 29000 3718 1373 61.1 1415 66.11457 71.4 1500 76.9 1542 82.4 1621 93.5 1690 104.5 1762 116.1 297503814 1388 63.3 1428 68.4 1469 73.6 1510 79.1 1552 84.8 1632 96.21702 107.5 1769 118.9

30500 3910 1403 65.7 1442 70.7 1481 76.0 1522 81.5 1562 87.21642 98.9 1715 110.6 1780 122.1 1849 134.3 31250 4006 1419 68.21457 73.2 1495 78.5 1533 84.0 1573 89.7 1652 101.6 1726 113.6 1793125.4 1856 137.4 32000 4103 1436 70.9 1472 75.8 1509 81.1 1546 86.61584 92.3 1662 104.3 1737 116.6 1805 128.8 1867 140.9 1932 153.632750 4199 1453 73.6 1488 78.6 1524 83.9 1560 89.4 1597 95.1 1672107.1 1747 119.6 1817 132.2 1880 144.5 1940 157.1

33500 4295 1471 76.5 1505 81.5 1539 86.7 1574 92.2 1610 97.91683 110.0 1757 122.6 1828 135.5 1892 148.3 1951 160.934250 43911489 79.4 1522 84.5 1555 89.8 1589 95.2 1624 100.9 1694 113.0 1767125.7 1838 138.9 1904 152.0 1964 164.9 35000 4487 1507 82.5 154087.6 1572 92.9 1605 98.4 1638 104.1 1707 116.1 1777 128.9 1848142.2 1915 155.7 1977 169.0 35750 4583 1526 85.6 1558 90.9 158996.2 1621 101.7 1653 107.3 1720 119.4 1788 132.2 1858 145.6 1925159.4 1988 173.1

36500 4679 1545 88.9 1576 94.2 1607 99.6 1638 105.1 1669 110.81734 122.8 1800 135.6 1868 149.1 1935 163.1 1999 177.1 37250 47761563 92.2 1594 97.7 1625 103.1 1655 108.7 1685 114.3 1748 126.31812 139.1 1878 152.7 1945 166.8 2010 181.138000 4872 1582 95.71613 101.2 1643 106.7 1673 112.4 1702 118.1 1763 130.0 1826 142.81890 156.4 1955 170.6 2020 185.238750 4968 1601 99.2 1632 104.81661 110.5 1691 116.2 1720 121.9 1778 133.9 1839 146.7 1902 160.21966 174.5 2029 189.2

39500 5064 1620 102.8 1651 108.6 1680 114.3 1709 120.1 1737125.9 1795 137.9 1854 150.7 1915 164.2 1977 178.5 2039 193.3 402505160 1640 106.5 1670 112.4 1699 118.3 1727 124.1 1755 130.0 1811142.1 1869 154.9 1928 168.4 1988 182.6 2050 197.541000 5256 1659110.3 1689 116.4 1718 122.3 1746 128.3 1773 134.3 1829 146.5 1884159.2 1942 172.7 2001 187.0 2061 201.941750 5353 1678 114.1 1708120.4 1736 126.5 1764 132.5 1792 138.6 1846 150.9 1900 163.7 1956177.2 2014 191.4 2072 206.3

42500 5449 1697 118.1 1727 124.5 1756 130.7 1783 136.9 1810143.1 1864 155.5 1917 168.4 1971 181.8 2027 196.1 2084 211.0 432505545 1716 122.1 1746 128.6 1775 135.1 1802 141.4 1829 147.6 1882160.3 1934 173.2 1987 186.6 2041 200.9 2097 215.844000 5641 1735126.2 1765 132.9 1794 139.5 1821 145.9 1848 152.3 1900 165.1 1951178.2 2003 191.7 2056 205.8 2110 220.744750 5737 1755 130.4 1784137.2 1813 144.0 1840 150.6 1867 157.1 1918 170.1 1969 183.3 2020196.8 2071 211.0 2124 225.9

45500 5833 1774 134.7 1803 141.7 1832 148.6 1859 155.4 1886162.0 1937 175.2 1987 188.6 2037 202.2 2087 216.3 2138 231.2 462505929 1794 139.0 1823 146.2 1851 153.3 1879 160.2 1905 167.0 1956180.5 2005 194.0 2054 207.7 2103 221.9 2153 236.7 47000 6026 1813143.5 1842 150.8 1870 158.0 1898 165.2 1924 172.1 1975 185.8 2023199.5 2072 213.4 2120 227.6 2169 242.447750 6122 1833 148.1 1862155.5 1889 162.9 1917 170.2 1943 177.3 1993 191.3 2042 205.2 2089219.2 2137 233.5 2184 248.3

48500 6218 1853 152.8 1881 160.4 1909 167.9 1936 175.3 1962182.6 2012 196.9 2060 211.0 2107 225.1 2154 239.6 2201 254.4 492506314 1874 157.6 1901 165.3 1928 172.9 1955 180.5 1981 188.0 2032202.6 2079 216.9 2126 231.3 2172 245.8 2217 260.7 50000 6410 1894162.5 1921 170.3 1948 178.1 1974 185.8 2001 193.5 2051 208.4 2098223.0 2144 237.5 2189 252.2 2235 267.2

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

DESIG

N10A

SIZE 4400--11//44CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPMCLASS IV 2088

43-7/16 In. Wheel Diameter 9.48 Sq. Ft. Outlet Area

Peak BHP = 39.49(RPM1000)3Tip Speed (fpm) = 11.37 x RPM

SIZE 4444--11//22CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPMCLASS IV 1687

48 In. Wheel Diameter 11.58 Sq. Ft. Outlet Area

Peak BHP = 65.07(RPM1000)3Tip Speed (fpm) = 12.57 x RPM

Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

10

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

OV 10" SP 11" SP 12" SP 13" SP 14" SP 16" SP 18" SP 20" SP 22"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

37500 3956 1278 81.3 1313 87.4 1348 93.8 1384 100.5 1420 107.41492 121.7 1559 136.1 1618 150.2 1678 164.9 38250 4035 1290 83.81324 89.9 1358 96.3 1393 103.0 1428 110.0 1500 124.4 1567 139.11628 153.6 1685 168.2 39000 4114 1303 86.5 1335 92.5 1368 98.9 1402105.6 1437 112.6 1507 127.2 1575 142.2 1637 157.0 1693 171.7 1752187.2 39750 4193 1316 89.2 1347 95.3 1379 101.7 1412 108.4 1446115.3 1515 129.9 1583 145.2 1646 160.4 1703 175.4 1758 190.7

40500 4272 1329 92.0 1360 98.2 1391 104.5 1423 111.2 1456 118.21523 132.8 1590 148.2 1654 163.8 1712 179.1 1766 194.4 41250 43511342 95.0 1372 101.1 1403 107.5 1434 114.2 1466 121.1 1531 135.81597 151.3 1662 167.1 1721 182.9 1775 198.4 42000 4430 1356 98.01385 104.2 1415 110.6 1445 117.2 1476 124.2 1540 138.8 1605 154.41669 170.5 1730 186.6 1784 202.4 42750 4509 1369 101.0 1398 107.31428 113.8 1457 120.4 1487 127.3 1549 142.0 1613 157.6 1677 173.81738 190.3 1794 206.6

43500 4589 1383 104.2 1412 110.6 1441 117.1 1469 123.7 1499130.6 1559 145.3 1621 160.9 1684 177.2 1745 194.0 1802 210.6 442504668 1397 107.5 1425 113.9 1454 120.5 1482 127.1 1510 134.0 1569148.7 1630 164.3 1691 180.7 1753 197.7 1811 214.7 45000 4747 1411110.8 1439 117.3 1467 123.9 1495 130.7 1522 137.6 1580 152.2 1639167.8 1699 184.3 1760 201.4 1819 218.7 45750 4826 1425 114.2 1453120.8 1480 127.5 1508 134.3 1535 141.2 1591 155.8 1648 171.4 1708187.9 1767 205.1 1826 222.7

46500 4905 1439 117.7 1467 124.4 1494 131.2 1521 138.0 1548145.0 1602 159.6 1658 175.2 1716 191.7 1775 208.9 1833 226.7 472504984 1453 121.2 1481 128.1 1508 134.9 1534 141.9 1561 148.9 1614163.5 1669 179.0 1725 195.5 1783 212.9 1841 230.8 48000 5063 1468124.8 1495 131.8 1522 138.8 1548 145.8 1574 152.9 1626 167.5 1679183.0 1735 199.5 1791 216.9 1848 234.9 48750 5142 1482 128.5 1509135.6 1535 142.7 1561 149.8 1587 157.0 1638 171.7 1691 187.2 1744203.7 1800 221.0 1856 239.1

49500 5222 1496 132.3 1523 139.5 1550 146.7 1575 153.9 1600161.2 1651 175.9 1702 191.4 1755 207.9 1809 225.3 1864 243.4 502505301 1510 136.1 1537 143.5 1564 150.8 1589 158.1 1614 165.5 1664180.4 1714 195.9 1765 212.3 1818 229.6 1872 247.8 51000 5380 1525139.9 1552 147.5 1578 155.0 1603 162.4 1628 169.8 1677 184.9 1726200.4 1776 216.8 1828 234.2 1881 252.3 51750 5459 1539 143.9 1566151.7 1592 159.3 1617 166.8 1642 174.3 1690 189.5 1738 205.1 1787221.5 1838 238.8 1890 257.0

52500 5538 1553 147.9 1580 155.8 1606 163.6 1631 171.3 1656178.9 1703 194.2 1751 209.9 1799 226.3 1849 243.6 1899 261.8 532505617 1567 152.0 1594 160.1 1620 168.0 1645 175.8 1670 183.6 1717199.1 1764 214.9 1811 231.3 1859 248.5 1909 266.7 54000 5696 1582156.1 1609 164.4 1635 172.5 1660 180.4 1684 188.3 1731 204.0 1777220.0 1823 236.4 1871 253.6 1919 271.8 54750 5775 1596 160.3 1623168.8 1649 177.0 1674 185.2 1698 193.1 1744 209.0 1790 225.1 1836241.6 1882 258.9 1930 277.0

55500 5854 1611 164.7 1637 173.2 1663 181.7 1688 189.9 1712198.1 1758 214.2 1803 230.4 1848 247.0 1894 264.2 1940 282.3 562505934 1625 169.0 1652 177.8 1677 186.4 1702 194.8 1726 203.1 1772219.4 1817 235.8 1861 252.6 1906 269.8 1951 287.9 57000 6013 1640173.5 1666 182.4 1692 191.1 1716 199.7 1740 208.2 1786 224.8 1831241.4 1874 258.2 1918 275.5 1963 293.5 57750 6092 1655 178.1 1681187.0 1706 196.0 1731 204.7 1755 213.3 1800 230.2 1844 247.0 1888264.0 1931 281.4 1974 299.3

58500 6171 1670 182.7 1695 191.8 1720 200.9 1745 209.8 1769218.6 1814 235.8 1858 252.7 1901 269.9 1944 287.4 1986 305.4 592506250 1685 187.4 1710 196.7 1735 205.9 1759 215.0 1783 223.9 1829241.4 1872 258.6 1914 275.9 1957 293.5 1999 311.560000 6329 1700192.3 1724 201.6 1749 210.9 1774 220.2 1797 229.3 1843 247.1 1886264.5 1928 282.0 1970 299.7 2011 317.9

40000 3454 1097 82.4 1135 89.8 1172 97.5 1208 105.2 1241 112.81302 127.9 41000 3541 1106 84.9 1142 92.4 1179 100.2 1215 108.11249 115.9 1310 131.4 1372 147.7 42000 3627 1115 87.7 1151 95.21187 103.0 1223 111.0 1257 119.1 1320 135.0 1377 151.1 43000 37131125 90.5 1160 98.0 1195 105.8 1230 113.9 1265 122.2 1329 138.71385 154.9 1445 172.3

44000 3800 1136 93.5 1169 101.0 1203 108.8 1237 117.0 1272 125.31337 142.3 1395 158.9 1450 175.9 45000 3886 1147 96.6 1179 104.11212 111.9 1245 120.1 1279 128.5 1345 145.8 1404 163.0 1458 180.046000 3972 1159 99.9 1190 107.4 1222 115.2 1254 123.4 1287 131.81352 149.4 1413 167.0 1466 184.4 1520 202.2 47000 4059 1171 103.41201 110.8 1232 118.6 1263 126.8 1295 135.3 1359 153.0 1421 171.11476 188.9 1527 206.7

48000 4145 1184 106.9 1213 114.4 1242 122.2 1273 130.3 1304138.8 1367 156.7 1428 175.1 1485 193.4 1536 211.5 1587 230.2 490004231 1197 110.7 1225 118.1 1254 125.9 1283 134.0 1313 142.5 1374160.4 1436 179.1 1493 198.0 1545 216.4 1594 235.1 50000 4318 1210114.5 1237 122.0 1265 129.8 1294 137.9 1323 146.4 1382 164.3 1443183.2 1501 202.4 1554 221.5 1603 240.3 51000 4404 1223 118.5 1250126.0 1277 133.8 1305 142.0 1333 150.4 1391 168.3 1450 187.3 1509206.9 1563 226.4 1612 245.7

52000 4491 1236 122.5 1263 130.2 1289 138.0 1316 146.1 1344154.6 1400 172.5 1458 191.5 1516 211.3 1571 231.4 1621 251.1 530004577 1250 126.7 1276 134.5 1302 142.4 1328 150.5 1355 159.0 1410176.8 1466 195.9 1523 215.9 1579 236.3 1630 256.6 54000 4663 1264131.1 1289 138.9 1315 146.9 1341 155.1 1366 163.5 1420 181.4 1474200.4 1530 220.5 1586 241.2 1638 262.0 55000 4750 1278 135.5 1303143.5 1328 151.6 1353 159.8 1378 168.2 1430 186.1 1484 205.1 1538225.2 1593 246.1 1646 267.3

56000 4836 1291 140.0 1317 148.2 1341 156.4 1366 164.7 1391173.1 1441 190.9 1493 210.0 1546 230.1 1600 251.1 1653 272.7 570004922 1305 144.7 1330 153.0 1355 161.3 1379 169.7 1403 178.2 1452196.0 1503 215.0 1555 235.1 1608 256.3 1661 278.0 58000 5009 1320149.4 1344 157.9 1369 166.3 1392 174.8 1416 183.4 1464 201.2 1513220.2 1564 240.4 1616 261.5 1668 283.5 59000 5095 1334 154.3 1358162.9 1382 171.5 1406 180.1 1429 188.8 1476 206.7 1524 225.6 1573245.7 1624 266.9 1675 289.0

60000 5181 1348 159.3 1372 168.1 1396 176.8 1419 185.5 1442194.3 1488 212.3 1535 231.2 1583 251.3 1633 272.5 1683 294.6610005268 1362 164.3 1386 173.3 1410 182.2 1433 191.1 1456 199.9 1501218.1 1547 237.0 1594 257.1 1642 278.3 62000 5354 1376 169.4 1400178.7 1424 187.7 1447 196.7 1469 205.8 1514 224.1 1558 243.0 1604263.1 1651 284.2 63000 5440 1390 174.7 1414 184.1 1438 193.4 1461202.5 1483 211.7 1527 230.2 1571 249.2 1615 269.3 1661 290.4

64000 5527 1404 180.0 1429 189.7 1452 199.1 1475 208.5 1497217.8 1540 236.5 1583 255.6 1627 275.6 1672 296.8 65000 5613 1418185.4 1443 195.3 1466 205.0 1489 214.5 1511 224.0 1553 242.9 1596262.2 1639 282.2 1682 303.3 66000 5699 1432 191.0 1457 201.1 1480211.0 1503 220.7 1524 230.3 1567 249.5 1609 269.0 1651 289.1 670005786 1447 196.6 1471 206.9 1494 217.1 1517 227.0 1538 236.8 1581256.2 1622 275.9 1663 296.1

68000 5872 1461 202.4 1485 212.9 1508 223.2 1531 233.4 1552243.4 1594 263.1 1635 283.0 1676 303.3 69000 5959 1475 208.3 1499219.0 1522 229.5 1545 239.9 1567 250.1 1608 270.2 1648 290.3 700006045 1490 214.3 1513 225.1 1536 235.9 1559 246.5 1581 256.9 1622277.3 1662 297.7

SIZE 4499CHICAGO BLOWER BACKWARD INCLINED FAN

52-7/8 In. Wheel Diameter 14.05 Sq. Ft. Outlet Area

Peak BHP = 105.54(RPM1000)3Tip Speed (fpm) = 13.84 x RPM

Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

11

OV 1/2" SP 1" SP 1-1/2" SP 2" SP 2-1/2" SP 3" SP 3-1/2" SP 4" SP4-1/2" SP 5" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP RPM BHP

OV 5-1/2" SP 6" SP 7" SP 8" SP 9" SP 10" SP 11" SP 12" SP 13" SP14" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP

OV 15" SP 16" SP 17" SP 18" SP 19" SP 20" SP 21" SP 22" SP 23"SP 24" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP

Max. RPM CLASS II 925Max. RPM CLASS III 1165 Max. RPM CLASS IV1675

14000 996 250 1.6 307 2.8 16000 1139 271 2.1 319 3.3 369 4.818000 1281 292 2.6 336 4.0 381 5.5 423 7.2 20000 1423 314 3.2 3554.7 394 6.3 435 8.1 472 10.0

22000 1566 337 3.9 376 5.6 411 7.2 447 9.1 485 11.2 518 13.3 54915.4 24000 1708 360 4.8 397 6.6 430 8.4 462 10.2 496 12.3 531 14.6561 16.9 589 19.2 26000 1851 385 5.7 418 7.7 451 9.7 480 11.6 51013.7 542 16.0 573 18.5 603 21.0 628 23.4 28000 1993 411 6.8 440 8.9472 11.1 500 13.1 527 15.2 555 17.6 585 20.1 614 22.7 642 25.4 66628.1

30000 2135 436 8.1 463 10.3 493 12.6 520 14.8 546 17.0 571 19.4598 21.9 625 24.6 653 27.4 679 30.3 32000 2278 462 9.5 486 11.8 51414.3 541 16.7 566 19.1 590 21.4 614 23.9 639 26.7 664 29.5 690 32.634000 2420 489 11.1 511 13.5 536 16.1 562 18.8 586 21.3 609 23.7631 26.3 654 29.0 678 31.9 702 34.9 36000 2562 515 12.9 535 15.4558 18.1 583 20.9 607 23.7 629 26.3 651 28.9 672 31.6 693 34.5 71637.6

38000 2705 542 14.9 560 17.5 582 20.3 605 23.3 629 26.2 650 29.0671 31.8 691 34.6 711 37.5 731 40.5 40000 2847 569 17.1 586 19.8605 22.7 627 25.8 650 28.9 671 31.9 692 34.9 711 37.8 730 40.7 74943.8 42000 2989 596 19.5 612 22.3 630 25.3 650 28.5 671 31.8 69235.0 712 38.2 731 41.2 750 44.3 768 47.4 44000 3132 622 22.1 63825.1 654 28.2 673 31.5 693 34.9 714 38.3 734 41.7 752 44.9 770 48.1787 51.3

46000 3274 649 25.0 664 28.0 679 31.3 697 34.7 716 38.2 735 41.8755 45.3 773 48.8 791 52.2 808 55.5 48000 3416 676 28.1 690 31.3705 34.6 721 38.1 739 41.8 757 45.5 776 49.2 794 52.9 812 56.5 82960.0 50000 3559 703 31.5 717 34.8 731 38.2 746 41.8 762 45.6 77949.4 797 53.3 815 57.2 833 61.0 849 64.7 52000 3701 731 35.1 74338.6 756 42.1 771 45.8 786 49.6 802 53.6 819 57.6 837 61.7 854 65.7871 69.6

54000 3843 758 39.0 770 42.6 782 46.3 796 50.1 810 54.0 826 58.1842 62.3 858 66.5 875 70.6 892 74.8 56000 3986 785 43.3 797 47.0809 50.7 821 54.7 835 58.7 849 62.8 865 67.1 881 71.5 897 75.8 91380.2 58000 4128 812 47.8 823 51.6 835 55.5 847 59.5 860 63.6 87367.9 888 72.3 903 76.8 919 81.3 934 85.8 60000 4270 840 52.7 85056.6 861 60.6 873 64.7 885 69.0 898 73.3 912 77.8 926 82.4 941 87.1956 91.7

28000 1993 690 30.8 30000 2135 703 33.2 725 36.0 32000 2278 71635.6 739 38.7 781 44.8 34000 2420 727 38.1 751 41.4 794 47.9 83454.4

36000 2562 738 40.8 762 44.1 807 51.0 847 57.9 884 64.8 380002705 752 43.7 774 47.1 818 54.2 860 61.5 897 68.7 932 75.9 400002847 768 47.0 788 50.3 829 57.5 871 65.0 910 72.7 945 80.3 978 87.942000 2989 786 50.6 804 53.9 843 61.1 882 68.7 921 76.8 958 84.8991 92.7 1023 100.8 1058 109.4

44000 3132 805 54.6 822 57.9 858 65.0 894 72.7 932 80.9 970 89.31005 97.7 1036 106.0 1067 114.4 1099 123.2 46000 3274 824 58.9 84162.3 874 69.4 909 77.0 944 85.2 980 93.8 1016 102.7 1050 111.5 1080120.2 1109 128.9 48000 3416 845 63.5 861 67.0 892 74.2 925 81.8 95890.0 992 98.6 1027 107.6 1061 116.8 1093 126.1 1123 135.1 500003559 865 68.3 881 72.0 911 79.3 942 87.0 973 95.1 1006 103.7 1039112.8 1072 122.2 1105 131.9 1136 141.5

52000 3701 886 73.5 902 77.2 931 84.8 960 92.6 990 100.7 1020109.3 1052 118.4 1083 127.9 1115 137.7 1147 147.7 54000 3843 90778.8 922 82.8 951 90.7 980 98.6 1008 106.7 1036 115.3 1066 124.41096 133.9 1127 143.8 1158 154.0 56000 3986 928 84.5 943 88.6 97296.8 999 105.0 1027 113.3 1054 121.9 1082 130.9 1110 140.4 1140150.3 1169 160.6 58000 4128 950 90.3 965 94.7 993 103.3 1020 111.71046 120.2 1072 128.9 1099 137.9 1126 147.4 1154 157.3 1182167.6

60000 4270 971 96.4 986 101.0 1014 110.0 1041 118.8 1066 127.51092 136.3 1117 145.4 1143 154.8 1169 164.7 1196 175.0 62000 4413992 102.8 1007 107.6 1035 117.0 1061 126.1 1087 135.2 1111 144.21136 153.4 1160 162.9 1185 172.7 1211 183.0 64000 4555 1014 109.41028 114.4 1056 124.3 1082 133.8 1107 143.2 1132 152.5 1155 161.91179 171.4 1203 181.3 1227 191.5 66000 4698 1036 116.4 1050 121.61077 131.8 1104 141.8 1128 151.5 1152 161.1 1175 170.7 1198 180.51221 190.4 1245 200.6

68000 4840 1059 123.8 1072 129.1 1099 139.6 1125 150.1 1149160.2 1173 170.2 1196 180.0 1218 190.0 1241 200.0 1263 210.3

52000 3701 1177 157.7 1205 167.6 1231 177.4 1257 187.2 1283197.5 54000 3843 1188 164.4 1217 174.8 1245 185.1 1270 195.2 1295205.5 1319 215.9 1346 226.8 56000 3986 1199 171.2 1228 181.9 1257192.7 1284 203.4 1309 214.0 1333 224.5 1356 235.2 1380 246.2 1407257.9 58000 4128 1210 178.2 1239 189.2 1268 200.3 1295 211.5 1322222.6 1346 233.6 1370 244.5 1393 255.5 1416 266.6 1440 278.3

60000 4270 1223 185.7 1251 196.7 1279 208.0 1306 219.5 1333231.1 1359 242.6 1383 254.1 1406 265.3 1429 276.6 1451 288.1 620004413 1237 193.7 1263 204.7 1290 216.1 1317 227.8 1344 239.6 1370251.6 1395 263.5 1420 275.3 1442 287.1 1464 298.7 64000 4555 1252202.2 1277 213.2 1303 224.6 1329 236.3 1355 248.3 1381 260.5 1406272.9 1431 285.2 1455 297.5 1478 309.6 66000 4698 1268 211.3 1292222.3 1317 233.7 1342 245.4 1367 257.5 1392 269.8 1417 282.3 1442295.0 1467 307.7 1490 320.4

68000 4840 1286 220.9 1309 231.9 1332 243.3 1356 255.0 1380267.1 1404 279.5 1429 292.1 1453 305.0 1477 318.0 1501 331.1 700004982 1304 231.2 1326 242.1 1348 253.5 1371 265.2 1394 277.3 1417289.7 1441 302.4 1465 315.3 1488 328.5 1512 341.9 72000 5125 1322242.1 1344 253.0 1365 264.3 1387 276.0 1409 288.1 1431 300.4 1454313.2 1477 326.2 1500 339.4 1523 352.9 74000 5267 1342 253.4 1362264.5 1383 275.8 1404 287.4 1425 299.5 1447 311.9 1468 324.6 1490337.6 1513 350.9 1535 364.5

76000 5409 1362 265.3 1382 276.6 1402 288.0 1422 299.6 1442311.5 1463 323.9 1484 336.6 1505 349.6 1526 362.9 1548 376.5 780005552 1382 277.7 1401 289.1 1421 300.7 1440 312.4 1460 324.4 1480336.6 1500 349.3 1520 362.3 1541 375.6 1562 389.2 80000 5694 1402290.5 1422 302.2 1441 313.9 1460 325.8 1479 337.9 1498 350.2 1517362.7 1537 375.7 1556 389.0 1576 402.6 82000 5836 1423 303.8 1442315.7 1461 327.7 1479 339.8 1498 352.0 1516 364.3 1535 376.9 1554389.8 1573 403.1 1592 416.6

84000 5979 1444 317.6 1463 329.8 1481 342.0 1499 354.2 1517366.6 1535 379.1 1553 391.8 1572 404.7 1590 417.9 1609 431.4 860006121 1465 331.7 1484 344.3 1502 356.8 1520 369.3 1537 381.8 1555394.5 1573 407.3 1590 420.3 1608 433.5 1626 447.0

DESIG

N10A

SIZE 5544--11//44CHICAGO BLOWER BACKWARD INCLINED FAN

Max. RPM CLASS II 836Max. RPM CLASS III 1052

58-1/2 In. Wheel Diameter 17.24 Sq. Ft. Outlet Area

Peak BHP = 174.96(RPM1000)3Tip Speed (fpm) = 15.32 x RPM

SIZE 6600CHICAGO BLOWER BACKWARD INCLINED FAN

Max. RPM CLASS II 756Max. RPM CLASS III 951

64-3/4 In. Wheel Diameter 21.06 Sq. Ft. Outlet Area

Peak BHP = 290.64(RPM1000)3Tip Speed (fpm) = 16.95 x RPM

12Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

OV 1/2" SP 1" SP 1-1/2" SP 2" SP 2-1/2" SP 3" SP 3-1/2" SP 4" SP4-1/2" SP 5" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP RPM BHP

OV 5-1/2" SP 6" SP 7" SP 8" SP 9" SP 10" SP 11" SP 12" SP 13" SP14" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP

24000 1140 221 3.1 261 5.0 302 7.328000 1330 244 4.2 279 6.3 3148.6 349 11.3 379 14.0 32000 1519 269 5.5 301 8.0 331 10.4 362 13.1393 16.2 419 19.2 36000 1709 294 7.1 324 9.9 351 12.6 378 15.3 40518.5 433 21.9 459 25.3 481 28.8

40000 1899 322 9.1 348 12.2 374 15.2 397 18.1 421 21.2 446 24.7471 28.5 495 32.3 517 36.1 537 40.0 44000 2089 349 11.5 372 14.7397 18.2 419 21.4 440 24.6 462 28.1 484 31.9 508 35.9 530 40.2 55244.448000 2279 378 14.3 397 17.7 420 21.5 442 25.1 462 28.6 48132.2 501 35.9 522 40.0 543 44.3 564 48.952000 2469 406 17.5 42421.2 444 25.2 465 29.2 485 33.1 503 36.9 521 40.7 539 44.7 558 49.1577 53.7

56000 2659 435 21.3 451 25.2 469 29.4 488 33.7 508 38.0 525 42.1542 46.2 559 50.4 576 54.7 593 59.260000 2849 465 25.6 478 29.7 49434.1 512 38.7 531 43.4 548 47.9 565 52.3 581 56.7 596 61.1 61265.764000 3039 494 30.5 507 34.8 521 39.4 537 44.2 554 49.2 57154.2 588 59.0 603 63.7 618 68.3 632 73.068000 3229 523 36.0 53540.5 548 45.3 563 50.4 578 55.6 595 60.9 611 66.1 626 71.2 640 76.2654 81.1

72000 3419 552 42.1 564 46.9 576 52.0 589 57.2 603 62.7 618 68.2634 73.8 649 79.4 663 84.7 677 90.0 76000 3609 582 49.0 593 54.0604 59.3 616 64.7 629 70.4 643 76.2 657 82.1 672 88.0 686 93.8 70099.5 80000 3799 612 56.6 622 61.9 632 67.3 643 73.0 655 78.8 66884.9 681 91.1 695 97.3 709 103.5 722 109.6

45000 2137 574 49.8 592 54.0 49000 2327 587 54.7 607 59.4 64168.7 53000 2517 600 59.8 619 64.8 656 75.0 688 85.0 719 95.4 570002707 615 65.6 632 70.6 668 81.3 702 92.2 732 103.0 761 113.9

61000 2896 632 72.2 648 77.2 681 88.0 714 99.4 746 111.1 776122.7 802 134.2 830 146.5 65000 3086 652 79.8 666 84.8 696 95.5 727107.0 758 119.2 789 131.7 817 144.1 843 156.4 868 168.9 69000 3276673 88.3 687 93.4 714 104.1 742 115.6 771 127.9 801 140.7 830 154.0857 167.2 882 180.3 906 193.373000 3466 695 97.6 708 102.9 734113.8 760 125.2 786 137.5 814 150.4 842 164.0 870 178.0 896 192.0921 205.9

77000 3656 718 107.6 731 113.2 755 124.4 779 136.0 804 148.2 829161.1 855 174.8 882 189.0 908 203.6 934 218.5 81000 3846 741 118.3753 124.2 777 136.0 800 147.9 823 160.2 847 173.0 871 186.6 895200.9 920 215.8 946 231.1 85000 4036 764 129.6 776 136.0 800 148.4822 160.8 844 173.3 866 186.3 888 199.8 911 214.0 934 228.9890004226 787 141.5 799 148.4 822 161.6 844 174.6 865 187.6 886 200.7907 214.3 929 228.5 950 243.3

93000 4416 810 154.2 822 161.4 845 175.6 867 189.3 888 202.8 908216.4 928 230.2 948 244.497000 4606 834 167.7 846 175.2 868 190.2890 204.8 910 219.0 930 233.0 949 247.2101000 4796 859 182.0 870189.9 891 205.6 913 221.0 933 236.0

OV 5-1/2" SP 6" SP 7" SP 8" SP 9" SP 10" SP 11" SP 12" SP 13" SP14" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP

CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHPOV 1/2" SP 1" SP 1-1/2" SP 2" SP 2-1/2" SP3" SP 3-1/2" SP 4" SP 4-1/2" SP 5" SP

20000 1160 248 2.7 291 4.2 336 6.1 23000 1334 271 3.5 310 5.2348 7.1 387 9.3 420 11.5 26000 1508 296 4.5 333 6.4 365 8.4 40010.7 434 13.1 464 15.6 29000 1682 322 5.7 356 7.9 386 10.0 415 12.3447 14.9 478 17.6 505 20.4 531 23.2

32000 1856 350 7.1 379 9.5 409 11.9 435 14.3 462 16.8 490 19.7519 22.7 545 25.8 569 28.8 593 32.0 35000 2030 378 8.8 404 11.4 43214.1 457 16.7 481 19.3 506 22.1 532 25.2 558 28.5 583 31.9 606 35.238000 2204 407 10.8 429 13.6 455 16.5 480 19.3 503 22.1 525 25.0548 28.0 571 31.4 595 34.9 619 38.5 41000 2378 436 13.1 456 16.0479 19.2 503 22.3 525 25.3 546 28.3 566 31.4 588 34.7 609 38.3 63242.0

44000 2552 465 15.7 483 18.8 504 22.1 527 25.5 548 28.9 568 32.1588 35.3 607 38.6 626 42.1 646 45.9 47000 2726 495 18.7 511 22.0530 25.4 551 29.1 572 32.7 591 36.2 610 39.6 628 43.1 646 46.6 66450.3 50000 2900 524 22.1 539 25.5 556 29.1 575 32.9 595 36.8 61540.7 633 44.3 650 48.0 667 51.6 684 55.4 53000 3074 554 25.9 56829.4 583 33.2 601 37.2 619 41.3 638 45.4 656 49.4 673 53.3 689 57.2705 61.1

56000 3248 584 30.1 597 33.8 611 37.8 627 41.9 644 46.2 662 50.6680 54.9 696 59.1 712 63.2 728 67.359000 3422 614 34.7 626 38.7 63942.8 654 47.0 670 51.5 686 56.1 703 60.7 720 65.2 736 69.6 751 73.962000 3596 644 39.9 655 44.0 668 48.3 681 52.7 696 57.3 711 62.1727 66.9 743 71.7 759 76.5 774 81.1 65000 3770 674 45.5 685 49.8696 54.3 709 58.8 722 63.6 737 68.6 752 73.6 767 78.6 782 83.7 79788.6

38000 2204 642 42.2 662 45.8 702 53.2 41000 2378 654 45.9 67649.8 715 57.6 751 65.6 44000 2552 667 49.8 688 53.9 729 62.3 76570.7 799 79.1 47000 2726 683 54.2 702 58.3 741 67.1 779 76.1 81385.0 844 93.9

50000 2900 701 59.3 718 63.4 754 72.1 791 81.5 827 91.1 859100.6 889 110.0 920 120.0 53000 3074 721 65.0 737 69.1 770 77.8 80487.2 839 97.2 873 107.4 904 117.5 932 127.5 960 137.7 56000 3248743 71.3 758 75.5 788 84.2 820 93.6 852 103.6 885 114.1 917 124.9947 135.6 975 146.1 1001 156.8 59000 3422 765 78.2 780 82.5 80891.3 837 100.7 867 110.7 898 121.3 929 132.3 960 143.6 989 155.01016 166.2

62000 3596 788 85.6 802 90.1 829 99.2 856 108.6 884 118.5 913129.1 942 140.2 972 151.8 1002 163.7 1030 175.665000 3770 811 93.5825 98.2 851 107.7 877 117.3 903 127.2 930 137.7 957 148.9 985160.5 1014 172.6 1042 185.0 68000 3944 835 101.8 848 106.8 874116.7 899 126.6 924 136.8 949 147.3 974 158.3 1001 170.0 1027 182.171000 4118 858 110.5 872 115.9 897 126.4 922 136.7 945 147.1 969157.7 993 168.7 1018 180.3 1043 192.5

74000 4292 882 119.7 895 125.4 921 136.5 945 147.3 968 158.1 990169.0 1013 180.1 1036 191.6 77000 4466 906 129.4 919 135.4 944147.1 968 158.6 990 169.8 1013 181.0 1034 192.3 80000 4640 930139.6 942 145.9 967 158.3 991 170.3 1014 182.1 1035 193.7 830004814 955 150.5 967 157.0 991 169.9 1014 182.6 1037 195.0

SIZE 6666CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPM CLASS II687

71-3/16 In. Wheel Diameter 25.49 Sq. Ft. Outlet Area

Peak BHP = 466.86(RPM1000)3Tip Speed (fpm) = 18.64 x RPM

SIZE 7733CHICAGO BLOWER BACKWARD INCLINED FAN Max. RPM CLASS II621

78-3/4 In. Wheel Diameter 31.19 Sq. Ft. Outlet Area

Peak BHP = 773.41(RPM1000)3Tip Speed (fpm) = 20.62 x RPM

Performance shown is for installation type B - Free inlet,Ducted outlet.Power ratings (BHP) do not include drive losses.

Performance ratings do not include the effects ofappurtenancesin the air stream.

13

OV 1/4" SP 1/2" SP 3/4" SP 1" SP 1-1/2" SP 2" SP 2-1/2" SP 3" SP3-1/2" SP 4" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP RPM BHP

OV 4-1/2" SP 5" SP 5-1/2" SP 6" SP 6-1/2" SP 7" SP 7-1/2" SP 8"SP 8 -1/2" SP 9" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

OV 1/4" SP 1/2" SP 3/4" SP 1" SP 1-1/2" SP 2" SP 2-1/2" SP 3" SP3-1/2" SP 4" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPMBHP RPM BHP RPM BHP RPM BHP RPM BHP

OV 4-1/2" SP 5" SP 5-1/2" SP 6" SP 6-1/2" SP 7" SP 7-1/2" SP 8"SP 8 -1/2" SP 9" SP CFM FPM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHPRPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

DESIG

N10A

34000 1090 158 3.0 177 4.3 194 5.5 211 7.0 245 10.2 39000 1250176 4.0 193 5.5 208 7.0 223 8.5 254 11.9 282 15.6 44000 1411 1955.4 209 7.0 224 8.7 238 10.3 264 13.8 292 17.9 316 22.149000 1571215 7.0 227 8.8 240 10.7 253 12.5 276 16.2 301 20.3 326 24.9 34829.5 369 34.354000 1731 235 9.0 245 10.9 257 13.0 269 15.1 291 19.0312 23.2 335 27.8 357 32.9 379 38.1 397 43.259000 1892 255 11.4 26413.4 274 15.6 285 17.9 307 22.3 326 26.6 346 31.3 366 36.4 387 42.0407 47.764000 2052 275 14.1 283 16.3 292 18.6 302 21.1 323 26.0 34130.7 359 35.4 377 40.6 396 46.2 415 52.269000 2212 295 17.3 30319.6 311 22.1 320 24.7 339 30.0 357 35.2 374 40.2 390 45.4 407 51.0425 57.074000 2373 316 21.0 323 23.5 330 26.1 338 28.7 355 34.4 37340.1 389 45.6 405 51.0 420 56.6 436 62.679000 2533 336 25.2 34327.8 349 30.5 356 33.3 372 39.3 389 45.5 405 51.4 420 57.2 434 63.0449 69.084000 2693 357 29.9 363 32.7 369 35.5 375 38.5 390 44.8 40551.3 421 57.7 436 63.9 450 70.0 463 76.289000 2853 377 35.2 38338.1 389 41.1 394 44.2 407 50.7 422 57.6 437 64.5 452 71.2 465 77.8478 84.294000 3014 398 41.1 403 44.2 408 47.4 414 50.6 426 57.3 43964.5 453 71.8 468 79.0 481 86.1 494 92.999000 3174 419 47.7 42450.9 429 54.2 434 57.6 445 64.6 457 72.0 470 79.6 484 87.3 497 94.9509 102.3104000 3334 439 55.0 444 58.4 449 61.8 454 65.3 464 72.6475 80.2 487 88.1 500 96.2 513 104.3 525 112.2109000 3495 460 63.0464 66.5 469 70.1 473 73.7 483 81.2 493 89.1 505 97.4 517 105.8 529114.2 541 122.7

64000 2052 434 58.3 451 64.4 467 70.4 483 76.869000 2212 44363.4 460 70.0 477 76.6 492 83.1 506 89.7 522 96.674000 2373 45269.0 469 75.7 485 82.8 502 89.9 517 97.0 530 103.9 544 111.0 558118.4 79000 2533 463 75.3 479 82.1 494 89.3 510 96.7 525 104.2 540111.8 554 119.4 567 126.8 579 134.3 592 142.184000 2693 476 82.6490 89.4 505 96.5 519 103.9 534 111.7 549 119.7 563 127.8 577 135.8590 143.8 602 151.789000 2853 491 90.8 504 97.6 517 104.6 530 112.1543 119.9 557 127.9 571 136.3 585 144.8 599 153.3 611 161.9940003014 506 99.8 518 106.7 530 113.8 542 121.2 555 129.0 567 137.0 580145.4 594 154.1 607 162.9 620 171.999000 3174 521 109.5 533 116.7544 124.0 556 131.4 567 139.1 579 147.2 591 155.6 603 164.2 616173.1104000 3334 537 119.9 548 127.4 559 135.0 570 142.6 581 150.4592 158.5 603 166.8 615 175.4109000 3495 553 130.9 564 138.9 575146.8 586 154.7 596 162.7 606 170.9 617 179.2114000 3655 569 142.5580 151.0 591 159.4 601 167.7 611 176.0 621 184.3119000 3815 585154.7 596 163.8 607 172.7 617 181.4

25000 981 162 2.0 184 2.9 205 3.9 227 5.129000 1138 181 2.7 2013.8 219 4.9 237 6.0 274 8.833000 1295 201 3.6 218 4.8 235 6.1 2517.3 284 10.1 316 13.337000 1452 221 4.7 236 6.1 253 7.5 267 8.9 29511.7 325 15.1 353 18.6 378 22.241000 1608 243 6.1 255 7.6 270 9.2284 10.7 310 13.7 335 17.1 363 20.9 388 24.8 410 28.745000 1765 2647.7 275 9.3 288 11.0 301 12.8 326 16.1 349 19.5 373 23.3 397 27.5421 31.8 441 36.049000 1922 286 9.7 296 11.4 307 13.2 319 15.1 34318.8 364 22.4 385 26.2 407 30.4 430 34.9 452 39.753000 2079 30812.0 317 13.8 327 15.7 337 17.7 360 21.8 381 25.7 400 29.6 420 33.8440 38.4 461 43.357000 2236 330 14.6 338 16.5 347 18.5 356 20.6 37725.1 398 29.3 416 33.5 434 37.7 452 42.3 471 47.261000 2393 35217.6 360 19.6 368 21.7 376 24.0 395 28.6 415 33.3 433 37.8 450 42.3467 46.9 484 51.865000 2550 375 21.0 381 23.1 388 25.4 396 27.7 41432.6 432 37.7 450 42.6 466 47.3 482 52.1 498 57.069000 2707 39724.8 403 27.1 410 29.4 417 31.9 433 37.0 450 42.3 467 47.6 484 52.8499 57.8 514 62.873000 2864 419 29.1 425 31.5 431 33.9 438 36.5 45241.8 468 47.4 485 53.1 501 58.6 516 64.0 530 69.377000 3021 44133.9 447 36.4 453 38.9 459 41.6 472 47.1 487 52.9 502 58.9 518 64.9533 70.7 547 76.381000 3178 464 39.1 469 41.8 475 44.5 480 47.2 49252.9 506 59.0 520 65.2 535 71.5 550 77.7 564 83.8 85000 3335 48644.9 491 47.7 496 50.5 502 53.4 513 59.4 525 65.5 539 72.0 553 78.6567 85.2 581 91.7

53000 2079 482 48.4 501 53.4 518 58.4 535 63.557000 2236 49152.5 511 57.9 529 63.4 546 68.8 562 74.2 578 79.761000 2393 50257.0 520 62.5 538 68.3 556 74.2 573 80.0 588 85.8 603 91.5 61897.565000 2550 514 62.2 531 67.7 548 73.5 565 79.6 582 85.8 59992.1 614 98.3 628 104.4 642 110.6 656 116.969000 2707 528 68.1 54473.6 559 9.4 575 85.5 591 91.8 608 98.4 624 105.0 639 111.6 653118.2 666 124.773000 2864 544 74.7 558 80.2 572 86.0 587 92.1 60298.4 617 105.0 632 111.8 648 118.8 663 125.8 677 132.877000 3021560 81.9 574 87.5 587 93.4 600 99.4 614 105.7 628 112.3 643 119.2657 126.3 672 133.5 686 140.981000 3178 577 89.7 590 95.5 603 101.5615 107.6 628 113.9 641 120.5 654 127.3 668 134.4 682 141.7850003335 594 98.0 607 104.1 619 110.3 631 116.6 643 123.0 655 129.5 667136.3 680 143.489000 3492 612 106.8 624 113.3 636 119.8 647 126.3659 132.8 670 139.5 682 146.393000 3648 629 116.1 641 123.0 653129.9 664 136.6 675 143.4 686 150.297000 3805 646 125.8 658 133.2670 140.5 681 147.6

4954-1/4

60

6673

31-7/1632-15/1636-7/8

38-3/839-7/8

42-7/847-7/1652-9/16

57-3/463-7/8

333

34

23-3/1625-1/2

28

30-5/834-7/16

27-7/1629-3/434-5/16

36-7/839-15/16

29-3/832-3/836-1/2

40-5/845-3/8

22-3/1623-11/1624-11/16

26-3/1627-11/16

32-3/835-7/838-3/4

43-7/850-3/8

5-3/165-15/324-1/32

4-5/86-7/16

44-3/8

4-15/16

5-7/166-1/16

43-7/848-1/253-5/8

58-7/865

485260

6470

38-1/242-1/446-9/16

51-1/1657-1/4

91012

1314

111214

1517

45-3/450-5/1655-1/2

60-7/868-1/16

3-11/164-1/4

3

3-15/164-1/16

53-7/859-9/3265-13/32

71-25/3280-3/16

1516

19.3

20.321.1

Fan Size

U

M N P Q R

BH, BAUUB, TAUTH, TADS T

DBonly W

AA

DB only BB

Y

DB only

Z

DB only

X

DB only CC DD

Min.Fan

SheaveDia.FF

4954-1/4

60

6673

52-7/858-1/264-3/4

71-3/1678-3/4

2-15/163-7/163-7/16

3-15/163-15/16

3/4 x 3/87/8 x 7/167/8 x 7/16

1 x 1/21x 1/2

47-7/853

58-1/2

64-3/871-1/8

42-13/3246-9/1651-5/16

56-5/1663-1/16

36-1/440

44-1/4

48-1/453

50-3/855-1/261-1/8

67-1/1674-15/16

46-1/251-3/856-7/8

6268-1/8

67-1/474-1/4

82

90-1/4103-3/4

53-5/859-3/865-7/8

71-7/879-1/2

6367

74-1/2

7984

46-1/450-13/16

56

61-3/868-9/16

42-15/1647-1/1651-13/16

56-13/1663-9/16

54-3/859-13/1665-15/16

72-1/480-11/16

50-7/856

61-5/8

67-9/1675-7/16

38-1/841-5/845-1/2

49-5/854-3/8

54-7/860-3/866-7/16

72-13/1681-3/16

3942-3/447-1/16

51-9/1657-3/4

889

1010

Fan Size

E H

WheelDia.

Shaft atBearings Keyway A B

BH, BAUUB, TAUTHD

TADonly F G* TAU THBAU UBBH TAD DB LK

Arrangement 1 Shown - All Dimensions in Inches. Do Not Use forConstruction Unless Certified.

FOUNDATION PLANSIDE ELEVATION (Drive Side)Bottom Horizontal CCWRotation

FRONT ELEVATIONFOUNDATION PLAN Down Blast Discharge

7 HOLES - 7/8 Dia.

4 HOLES 7/8 Dia.

AAHoles 1/2Dia. AroundDischarge

14

CCLLAASSSS IIII - Arrangements 1 and 9 CHICAGO BLOWER BACKWARDINCLINED FAN

56143-145182-184

213-215254-256284-286

324-326364-365404-405

36-7/836-7/837-1/4

37-5/838-1/838-3/8

38-7/839-3/840-5/8

36-7/836-7/837-1/4

37-5/838-1/838-3/8

38-7/839-3/840-5/8

3535

35-3/8

35-7/836-1/436-1/2

37-1/837-5/838-7/8

33-1/833-1/833-3/8

33-7/834-1/434-3/8

35-1/835-5/836-7/8

31-7/831-7/832-1/4

32-5/833

33-3/8

33-7/834-3/835-5/8

30-3/830-3/830-7/8

31-1/831-3/831-7/8

32-3/83334

3030

30-3/8

30-3/431

31-1/2

3232-5/833-5/8

49

MotorFrame

FanSize BAU UB TAU TH TAD DB

Arrangement 9 -Mean Drive Centers for Frames Shown

BH

Positions ofDischarge

andRotation

as ViewedFrom theDrive Side

F/2 F/2

F/2

ABW

H

D

F/2

F/2 F/2

A BW

D

H

G*

*OPTIONALSLIP INLET

CCLLAASSSS IIIIII - Arrangements 1 and 9 CHICAGO BLOWER BACKWARDINCLINED FAN

4954-1/4

60

35-3/435-7/839-7/8

4347-9/1652-11/16

333

23-1/425-17/3228-3/32

27-7/1629-9/3235-3/32

29-3/832-3/836-1/2

28-3/428-7/828-5/8

32-3/835-7/839-3/4

5-1/45-17/324-3/32

44-3/8

4-15/16

43-7/848-1/253-5/8

485260

38-1/242-1/446-9/16

91012

111214

45-3/450-5/1655-1/2

3-11/164-1/43-1/32

53-7/859-9/3265-13/32

12.513.915.3

Fan Size

U

M N P Q R

BH, BAUUB, TAUTH, TADS T

DBonly W

AA

DB only BB

Y

DB only

Z

DB only

X

DB only CC DD

Min.Fan

SheaveDia.FF

4954-1/4

60

52-7/858-1/264-3/4

3-3/163-7/163-11/16

3/4 x 3/87/8 x 7/167/8 x 7/16

47-7/853

58-9/16

42-13/3246-9/1651-5/16

36-1/440

44-1/4

50-3/855-1/261-1/8

46-1/251-3/856-7/8

67-1/474-1/4

82

53-5/859-3/865-7/8

64-1/466-3/474-1/2

46-1/450-13/16

56

42-15/1647-1/1651-13/16

54-3/859-13/1665-15/16

50-7/856

61-5/8

38-1/841-5/845-1/2

54-7/860-3/866-1/2

3942-3/447-1/16

999

Fan Size

E H

WheelDia.

Shaft atBearings Keyway A B

BH, BAUUB, TAUTHD

TADonly F G TAU THBAU UBBH TAD DB LK

Arrangement 1 Shown - All Dimensions in Inches. Do Not Use forConstruction Unless Certified.

FOUNDATION PLANSIDE ELEVATION (Drive Side)Bottom Horizontal CCWRotation

FRONT ELEVATIONFOUNDATION PLAN Down Blast Discharge

7 HOLES - 7/8 Dia.

4 HOLES 7/8 Dia.

AAHoles 1/2Dia. AroundDischarge

56143-145182-184

213-215254-256284-286

324-326364-365404-405

36-7/836-7/837-1/4

37-5/838-1/838-3/8

38-7/839-3/840-5/8

36-7/836-7/837-1/4

37-5/838-1/838-3/8

38-7/839-3/840-5/8

3535

35-3/8

35-7/836-1/436-1/2

37-1/837-5/838-7/8

33-1/833-1/833-3/8

33-7/834-1/434-3/8

35-1/835-5/836-7/8

31-7/831-7/832-1/4

32-5/833

33-3/8

33-7/834-3/835-5/8

30-3/830-3/830-7/8

31-1/831-3/831-7/8

32-3/83334

3030

30-3/8

30-3/431

31-1/2

3232-5/833-5/8

49

MotorFrame

FanSize BAU UB TAU TH TAD DB

Arrangement 9 -Mean Drive Centers for Frames Shown

BH

15

Positions ofDischarge

andRotation

as ViewedFrom theDrive Side

F/2 F/2

F/2

ABW

H

D

F/2

F/2 F/2

A BW

D

H

G*

*OPTIONALSLIP INLET

22-1/424-1/2

27

3033

36-1/2

40-1/444-1/2

49

24-1/426-7/1629-1/8

32-3/835-9/1639-3/8

43-7/1648

52-7/8

2-3/162-3/162-7/16

2-7/162-15/162-15/16

3-7/163-11/163-15/16

1/2 x 1/41/2 x 1/45/8 x 5/16

5/8 x 5/163/4 x 3/83/4 x 3/8

7/8 x 7/167/8 x 7/161 x 1/2

21-7/824

26-1/2

29-1/832

35-21/32

39-9/3243-13/3247-29/32

1921-3/423-7/8

26-13/1629-7/3232-3/32

35-5/3238-21/3242-13/32

18-1/419-1/2

22

23-1/225

27-1/2

30-1/433

36-1/4

22-11/1625-3/428-1/4

31-11/1634-3/838

41-11/1645-7/850-3/8

24-1/426-3/430-1/8

31-3/833-1/435-1/4

38-3/442-1/446-1/2

33-1/435-3/439-7/16

42-5/846

50-1/4

55-1/461

67-1/4

24-9/1627-9/1630-9/16

33-9/1636-9/1641-9/16

44-9/1649-9/1653-5/8

3740-1/443-3/4

47-3/451-3/851-5/8

57-3/861-1/869-3/8

21-1/824-5/1626-9/16

29-3/832-1/1635-1/8

38-7/1642-3/1646-1/4

2022-1/424-3/8

27-5/1629-3/432-5/8

35-11/1639-3/1642-15/16

25-1/827-3/430-3/8

34-5/1637-1/241-3/16

45-1/849-9/1654-3/8

23-1/426-1/428-3/4

32-3/1635-1/838-1/2

42-1/446-3/850-7/8

2022-3/824-7/32

25-5/1627

29-1/8

31-5/834-1/238-1/8

26-5/828-1/231-3/16

34-13/1638

41-21/32

45-19/3250-3/3254-29/32

1922-3/824-7/32

25-5/1627-1/8

29-11/16

32-7/1635-5/8

39

678

888

8810

Fan Size

E H

WheelDia.

Shaft atBearings Keyway A B

BH, BAUUB, TAUTHD

TADonly F G TAU THBAU UBBH TAD DB LK

22-1/424-1/2

27

3033

36-1/2

40-1/444-1/2

49

RF182-184213-215254-256

284182-184213-215254-256284-286213-215254-256284-286324-326254-256284-286324-326364-365254-256284-286324-326284-286324-326364-365404-405284-286324-326364-365404-405324-326364-365404-405444-445

RF24-3/424-1/423-3/423-3/827-7/827-1/426-1/2

2630-7/830-1/829-1/2

2933-5/8

3332-3/831-5/836-7/836-1/435-3/840-3/439-7/839-1/838-1/4

4645

44-1/843-3/850-3/849-1/248-1/247-3/4

RF24-1/423-3/423-1/822-3/427-1/826-5/825-7/825-3/830-1/229-5/829-1/828-1/233-1/832-1/2

3231-1/436-1/235-7/835-1/840-3/839-1/238-3/4

3845-1/244-1/243-3/442-7/8

5049

48-1/847-3/8

RF23

22-1/222

21-5/825-3/425-1/424-5/824-1/828-3/4

2827-1/226-7/831-1/430-5/830-1/829-1/234-1/433-5/8

3338

37-1/436-3/835-3/442-7/8

4241-1/840-3/847-1/846-1/845-1/444-1/2

RF21-1/2

2120-1/2NA24

23-1/223

22-1/226-1/225-3/425-1/424-7/828-7/828-1/427-3/427-1/431-1/2

3130-3/834-7/834-1/833-3/832-3/439-1/238-5/837-7/837-1/843-3/842-1/241-1/2

41

RF19-7/819-1/2NANA

22-3/821-7/821-3/8NA

24-7/824-1/423-3/423-3/8

2726-1/2

26NA

29-1/229

28-3/832-3/4

3231-1/430-3/437-1/836-3/835-1/234-7/840-3/439-7/8

3938-3/8

RF20

19-1/2NANA

22-1/421-3/421-1/4NA

23-1/422-5/822-1/4NA25

24-1/224-1/8NA

27-3/826-3/426-1/430-1/429-1/228-7/8NA

34-3/832-5/832-7/832-1/437-3/436-7/836-1/835-1/2

RF20

19-1/2NANA

22-1/421-1/421-1/4NA

23-1/422-5/822-1/4NA25

24-1/224NA

28-1/427-5/826-7/829-5/8

2928-1/4NA

33-1/232-3/4

3231-3/837-1/836-1/435-1/234-7/8

22-1/4

24-1/2

27

30

33

36-1/2

40-1/4

44-1/2

49

22-3/424-1/1625-3/8

2830-1/429-5/8

34-3/835-7/840-1/8

19-5/821-9/1623-3/4

26-1/229-1/8

32

35-1/438-15/1642-7/8

2-1/22-1/22-1/2

2-1/22-1/2

3

333

11-3/1612-5/3213-1/4

14-5/815-15/1617-3/4

19-3/821-7/3223-3/16

14-9/1614-27/3215-1/4

17-1/417-13/1619-5/8

2424-11/3225-9/16

12-5/813-7/8

15-23/32

17-5/1619

20-5/8

23-1/826

29-1/8

16-5/818-5/820-5/8

22-5/825-5/824-1/4

26-1/429-1/434-1/4

15-1/216-3/4

18-19/32

20-3/1621-7/823-7/8

26-1/229-1/432-3/8

3-3/164-5/323-1/4

2-5/83-15/163-3/4

3-3/83-7/323-3/16

1-3/42

2-3/16

2-23/323-1/64

3

3-5/163-11/16

4

20-9/1623-7/1626-1/16

28-7/831-3/834-5/8

37-15/1641-11/1645-3/4

242430

323238

404648

17-1/419-13/1621-11/16

24-7/1626-5/829-3/16

31-15/1635-1/838-1/2

445

667

8910

446

668

81010

24-1/827-9/1629-7/8

33-13/1636-13/1640-21/32

44-9/1649-1/1653-7/8

4-5/165-5/162-9/16

3-7/85-5/163-1/2

5-5/163-3/85-5/8

12-5/813-7/8

15-23/32

17-5/1619

20-5/8

23-1/826

29-1/8

22-1/424-1/427-5/8

28-11/1630-3/432-7/8

36-1/839-3/443-7/8

3.05.26.3

6.36.58.0

8.59.410.2

Fan Size

U BB

M N P Q R

BH, BAUUB, TAUTH, TADS T

DBonly W

AA

DB only

BH, BAUUB, TAUTH, TAD

Y

DB only

Z

DB only

X

DB only

DBonly CC FF

Min.Fan

SheaveDia.DD

Positions ofDischarge

andRotation

as ViewedFrom theDrive Side

Arrangement 1 Shown - All Dimensions in Inches. Do Not Use forConstruction Unless Certified.

FOUNDATION PLANSIDE ELEVATION (Drive Side)Bottom Horizontal CCWRotation

FRONT ELEVATION FOUNDATION PLAN Down Blast Discharge

7 HOLES 5/8 Dia. Sizes 22-1/4 to 33 7/8 Dia. Sizes 36-1/2 to49

5 HOLES 5/8 Dia. Sizes 22-1/4 to 33 7/8 Dia. Sizes 36-1/2 to 49AA1/2 Dia. Holes

Around Discharge

MotorFrame

FanSize BAU UB TAU TH TAD DB

Arrangement 9 -Mean Drive Centers for Frames Shown

BH

RF = Refer to Factory NA = Not Available

16

CCLLAASSSS IIVV - Arrangements 1 and 9 CHICAGO BLOWER BACKWARDINCLINED FAN

F/2 F/2

F/2

ABW

H

D

F/2

F/2 F/2

A BW

D

H

G*

*OPTIONALSLIP INLET

CHICAGO BLOWER BACKWARD INCLINED FAN

NOTES:Dimensions shown (in inches) are the maximum values perfan sizeregardless of rotation, discharge ormotorframe/position.

For precise rotation, discharge andmotor position dimensions,consultyour Chicago Sales Engineer.Dimensions are not forconstructionunless certified.

Approximate weights include fan,base, motor, V-belt drive, andbeltguard. For belt drive centers, seecharts on dimensionalpages.

Unitary Base

II

III

IV

4954-1/460

6673

4954-1/460

22-1/424-1/227

3033

36-1/2

40-1/444-1/249

108-7/8119-3/4132-1/4

146-1/4*162-3/4*

108-7/8119-3/4132-1/4

56-7/1656-1/262-7/16

68-1/274-1/281-7/8

90-3/1699-3/16108-7/8

93-13/1693-9/16103-7/8

107-7/8115-15/16

93-13/1693-9/16103-7/8

49-5/1653-9/1658-1/2

63-1/268-7/1670-5/8

7883-5/8

93-13/16

96-1/1695-13/16106-1/8

110-3/8118-7/16

96-1/1695-13/16106-1/8

51-9/1655-13/1660-3/8

65-3/470-11/1672-7/8

80-1/485-7/896-1/16

888

88

888

666

668

888

150160171

180189

151-13/16161-7/16172-5/16

91-3/496-3/4

104-7/16

110-9/16121-7/16128-1/4

135-1/4143-1/4

151-13/16

86-1/286-15/1696-1/16

99-5/8108-1/4

86-1/286-15/1696-1/16

45-7/848-5/852-1/8

57-1/262-3/865-1/8

73-1/878-5/1686-1/2

426049186292

77949166

635370287837

190119952506

279737874615

523957696786

404T404T405T

444T445T

447T447T447T

365T365T405T

405T444T445T

445T445T447T

ClassFanSize F JK TT CH TWTL

Weight(lbs.)

Ref. Max.MotorFrame

* Shipped as a split housed fan. Maximum dimension to top ofwheel; Size 66 - 110", Size 73 - 120".

17

DESIG

N10A

EngineeringSpecifications

Design 10A Fans withBackwardInclinedWheels

GENERAL:Provide a high performance, low mainte-

nance, centrifugal fan with backward inclined

wheel and hyperbolic wheel cone. Fan shall

be licensed to bear the AMCA Certified

Ratings Seal for Air Performance based on

tests and procedures in accordance with

AMCA standard 211. Fans must be manufac-

tured and assembled in the U.S.A. Acceptable

vendors: Chicago Blower Corporation

PERFORMANCE: Performance shall include steep pressure and

non-overloading horsepower characteristics.

Mechanical efficiency shall be no less than

80%. Wheel inlet cone to be designed to

ensure smooth, stable air flow across the

entire operating range. System static pressure

changes of 30% shall result in an approximate

10% volume reduction.

HOUSING:Fan housing shall be of welded, heavy gauge

construction with seven common discharge

positions. Scroll is to be continuously welded.

ROTOR:Wheel shall have cast iron hub (steel hub on

sizes 40-1/4, 44-1/2 and 49) lock bolted to a

heavy backplate. Blades must be single sheet,

high strength low alloy steel, continuously

welded to the backplate and hyperbolic

wheel cone. Wheels to be statically and

dynamically balanced to G 6.3 standards in

accordance with ISO 1940 and ANSI S2.19

specifications. Shaft shall be turned, ground

and polished 1045 hot rolled steel straight-

ened to a maximum T.I.R. of .002 inches

and mounted using heavy duty ball or roller

pillow block bearings. Shaft critical speed shall

not be less than 1.25 times maximum RPM.

MOUNTING:Housing and base assembly complete with

integral mounting angles for connection to

foundation. Adjustable motor base to be

welded to base or channel.

18

FACTORY MOUNTED MOTORS AND DRIVES(Accessory)Motors and drives tobe factory mounted.

Unit to be tested at running speed for vibra-

tion and balance. Filtered vibration readings,

taken at bearings, are not to exceed 0.15

inches per second.

INLET VOLUME CONTROL(Accessory)Inlet volume control (IVC) deviceshall be

totally enclosed within the inlet cone. IVC

device shall be 7-bladed, and pre-spin the

incoming air to control volume and pressure.

ACCESSORIES (Choose from the following) Slip-fit Inlet

Flanged Inlet or Outlet - Punched Holes

Companion Flange - Punched orUnpunched - Inlet, Outlet orBoth

Type C AMCA Spark Resistant Construction

1-1/2" NPT Housing Drain

Shaft Seal

Quick Clamp or Raised Bolted Access Door

Inlet Screen

Shaft Cooling Wheel with Guard (Required from 300 - 800F)

Adjustable Motor Base

Shaft and Bearing Guard with Extended Grease Fittings

Totally Enclosed Belt Guard with Ventilation Panel

Constant or Adjustable Speed V-Belt Drives - minimum 1.2S.F.

Outlet Damper - Parallel or Opposed Blades.Manual Operation withLocking Quadrant.

Unitary Base: Heavy channel construction,continuously welded,with fan and motorbase welded to insure vibration-free service.

Inlet Box: Bolt-on with access door andoptions for support legmounting and shopassembly.

SQB FANS

The SQB version of ChicagosSquare Fans has a backwardinclinedwheel to handle corrosiveor dusty airstreams. It is also suitedforhigh temperature airstreams to650F. Sizes range from 12-1/4to44-1/2 with volumes to 55,600CFM and pressures to 15" WG. AskforBulletin SQB.

INDUSTRIAL CENTRIFUGAL FANS

The flat radial blades of ChicagosDesign 16A wheels are designedtohandle dirty air without materialbuild-up. Welded housing ofheavysteel plate stands up to demandingindustrial applications andtempera-tures to 800F. Wheel diameters to71", with volumes to70,000 CFMand pressures to 40" WG. Ask forBulletin ICF.

SQI FANS

Using industrial duty radial bladesthat resist materialbuild-up, the SQIfan is especially suited for sticky,heavy orabrasive applications.With welded heavy steel platehousing, steelwheels and oversizebearings, the SQI is a hard workingindustrialfan designed for pres-sures to 18" WG. Inlet diametersfrom 5" to17". Options include alternate finishes to meet customerspecifications. Ask for Bulletin SQI.

ChicagoIndustrial Fans

for EveryApplication

19

Design 10A Backward Inclined FanDesign 10A BCF final.pdfBackCover Master

For CBC Web_ New BCCBC New Back Cover Complete_Layout 1.pdf