Turning Air Into Solutions. BACKWARD CURVED HIGH PRESSURE FANS MODEL BCS

Turning Air Into Solutions. BACKWARD CURVED HIH PRESSURE FANS MODEL BCS CATALOUE M400 December 203

CentrifugalFans Model BCS Backward Curved - High Pressure The BCS fan from Twin City Fan & Blower is a high efficiency backward curved industrial fan designed for handling relatively clean air in high pressure applications. Typical applications include combustion air, product cooling, moisture blow-off, forced draft on fluid bed boilers, and induced draft after baghouse process blowers. Because the BCS features a wider impeller and housing, producing a high volume of air at a lower velocity, the need for an expansion evasé is eliminated. BCS fans are available with a variety of construction options and accessories, offering the versatility and flexibility required in today's industrial applications. Arrangement 9F Sizes 49 to 2260 mm impeller diameters Performance Airflow to 200 m 3 /sec at 500 Pa Static pressure to 9945 Pa Airstream temperatures to 425 C Arrangements, 3SI, 4, 7SI, 8, 9 and 9F Drive Configurations Available in both direct and belt drive configurations. Construction Design 4 for tip speeds up to 70 m/s Design 7 for tip speeds up to 85 m/s Design 22 for tip speeds up to m/s Design 26 for tip speeds up to 30 m/s Arrangement with unitary base and belt guard Housings Heavy-gauge, reinforced, continuously welded housings provide strength and durability for extended service life a necessity in all commercial and industrial installations. Outlet flanges for duct-connection as well as rigidity are standard. Inlet collars for slip-joint connection and lifting lugs are also standard. All housings are reinforced with rigid bracing to increase structural integrity. The support angles are intermittently welded and caulked between welds to prevent bleed-through corrosion. Precisely positioned cutoff plates and aerodynamically spun inlet cones provide high efficiency and smooth airflow through the fan. 2 Twin City Fan Catalogue M400

ConstructionFeatures BCS Impeller The BCS impeller features heavy-gauge steel construction and a non-overloading impeller design, suitable for applications requiring large volumes of air at moderate to high pressures. The high efficiency impeller features backward curved blades of single thickness, continuously welded to the rim and backplate. A conical spun shroud (rim) makes BCS fans less susceptible to the performance losses associated with poor inlet conditions. All BCS impellers are statically and dynamically balanced to grade 6.3 per ANSI S2.9 (3.8 mm/s rms) for smooth operation prior to assembly of the fan, followed by a final balance of the entire rotating assembly. Shaft Shafts are AISI-8, 40 or 45 hot-rolled steel accurately turned, ground, polished, and ring gauged for accuracy. Shafts are generously sized for first critical speed of at least.43 times the maximum speed for the class. BCS Impeller Bearings Bearings are heavy-duty, grease-lubricated, anti-friction ball or roller, self-aligning, pillow block type and are selected for minimum average bearing life L in excess of 40,000 hours at the maximum fan RPM. Rotation and Discharge Both clockwise and counterclockwise rotations are available in various standard discharge positions. See drawings on pages 28-4. Temperature Limits Standard construction designed for temperatures up to 50 C. Optional construction available to handle up to 425 C. See page 7. Outlet Flange Punched outlet flange is provided as standard construction on all sizes. Arrangement Mechanical Run Test & Final Vibration Check All fans are assembled for a mechanical run test as well as final balance prior to shipment. Vibration readings are taken on both fan bearings in the axial, horizontal, and vertical directions at the specified speed. Fans are balanced to 3.8 mm/s rms. peak or less. Special Materials BCS fans can be constructed of special materials such as aluminum or stainless steel. 203 Twin City Fan Companies, Ltd., Minneapolis, MN. All rights reserved. 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. www.tcf.com 3

OptionalConstruction Fan with Split Housing Split Housing A flanged horizontal split housing is available on the fan s centerline. A pie-shaped split is also available for impeller removal without disturbing the ductwork. High Temperature Construction Airstream temperatures above 50 C require high temperature construction. See page 7 for construction requirements. Insulation pins and complete fan insulation are available. Spark Resistant Construction Fan applications may involve the handling of potentially explosive or flammable particles, fumes or vapour. Such applications require careful consideration by the system designer to insure the safe handling of such gases. Twin City Fan & Blower offers the following classifications of spark resistant construction per AMCA Standard 99-040-86. It is the specifier or the user s responsibility to specify the type of spark resistant construction with full recognition of the potential hazards and the degree of protection required. Type A: All parts of the fan in contact with the air or gas being handled shall be made of nonferrous material usually aluminum and limited to 20 C. Type B: The fan shall have a nonferrous impeller or impeller and nonferrous ring about the opening through which the shaft passes usually aluminum impeller and anti-spark track and limited to 20 C. Type C: The fan shall be so constructed that a shift of the impeller or impeller or shaft will not permit two ferrous parts of the fan to rub or strike. This is accomplished with an aluminum inlet cone and anti-spark track. This construction is limited to 260 C Construction to 425 C is available using a steel inlet cone with copper/bronze lining. Notes:. Bearings shall be placed outside the airstream. Therefore, do not use Arrangement 3 or 7. 2. The user shall electrically earth all fan parts. Refer to AMCA Standard 99-040-86 for full details. InletBoxes Typical Detached Inlet Box Dimensions C A To Suit Fan D B F FAN SIZE A B C MAX. D MAX. INLET AREA (m 2 ) F MAX. 65 229 692 53 28 0.58 32 82 254 762 54 308 0.94 38 200 279 838 54 333 0.234 38 222 3 933 8 360 0.290 5 245 343 29 8 398 0.353 5 270 375 30 8 424 0.42 64 300 49 257 6 462 0.53 64 330 464 384 8 502 0.64 64 365 508 530 8 552 0.78 64 402 565 63 33 603 0.96 64 445 622 867 59 654.6 64 490 686 2057 59 78.4 64 542 762 2273 59 794.73 64 600 838 255 59 870 2. 64 660 927 2769 59 946 2.57 64 730 6 306 59 35 3. 64 807 30 3404 59 37 3.85 64 890 245 3734 59 25 4.65 64 Dimensions are not to be used for construction. Dimensions are in inches unless otherwise noted. 4 Twin City Fan Catalogue M400

InletBoxPositions INLET BOX POSITION OF POSITION NO. INLET BOXES 45 Angular Down Intake 90 Horizontal Right Intake 35 Angular Up Intake 80 Bottom Up Intake 225 Angular Up Intake 270 Horizontal Left Intake 35 Angular Down Intake 360 Top Down Intake 270 35 35 270 360 360 45 90 45 90 NOTES:. Reference line is the top vertical axis through center of fan shaft. 2. Position of inlet box and air entry to inlet box is determined from drive side of fan. 3. Position on inlet box is designated in degrees clockwise from top vertical axis as shown. 4. Positions 35 to 225 in some cases interfere seriously with floor structure. 225 225 80 80 35 35 Inlet Box Inlet Box Fan Fan Subbase Arr. Fan With Detached Inlet Box Can Be Supplied in Arr. 8 Arr. Fan With Attached or Integral Inlet Box Can Be Supplied in Arr. 8 Inlet Box Fan Fan Inlet Box Coupling Motor Concrete Steel Base Arr. 3SI Fan With Integral Inlet Box, Centrally Supported Impeller, Independent Bearing Pedestal To Be Installed on Concrete Pedestals Arr. 7SI Fan Similar to Arr. 3SI Except Bearing Pedestal & Motor Installed On Steel Common Base www.tcf.com 5

ProductAccessories Inlet Box An inlet box is designed to minimize pressure drop and is recommended for applications where uniform flow is difficult to obtain due to limited space. Inlet boxes can be designed to be either detachable or integral to the fan. Inlet Box Damper The inlet box damper pre-spins the air in the direction of impeller rotation, resulting in a savings in consumed power at reduced loads. Outlet Dampers Double surface aerofoil blades are available in either parallel or opposed blade design. Belt & Shaft uard Fan uards Shaft, bearing, and belt guards are available in OSHA type designs. Access Door Bolted, quick-opening, and raised bolted access doors are available for impeller inspection or maintenance. Quick-Open Access Door Bolted Access Door Raised Bolted Access Door Variable Inlet Vanes Variable inlet vanes are available to provide economical, stable, and efficient air volume control for manual or motorized operation. Nested inlet vanes are available for Design 7 and are suitable for temperatures to 50 C. External inlet vanes are available for Design 22 and 26 and are suitable for temperatures to 50 C. Construction to 35 C is available for both. Shaft Seals A variety of shaft seals are available to prevent contaminants in the airstream from passing through the shaft hole in the fan housing. The shaft seal is provided as standard on all fans with applications over 50 C and fans with split housings. Although shaft seals minimize air leakage, they are not an airtight design. Nested Inlet Vanes Safety Screen External Inlet Vanes Shaft Seal Drain All fans are constructed with a drain hole in the bottom of the housing. A threaded pipe coupling is welded to the lowest point in the housing scroll to permit wash water or condensation to drain from the fan. Flanged Inlet A punched inlet flange is available for duct mounting. Temperature and Vibration Detectors Thermocouples or RTDs are available to install on the bearings. A variety of vibration switches are available. Vibration Isolation Bases Structural angle, structural channel, inertia bases, and unitary bases are available with or without spring isolators. Screens Safety screens are available for mounting in the fan inlet or outlet in non-ducted applications. 6 Twin City Fan Catalogue M400

AIRSTREAM TEMPERATURE ( C) IMPELLER MATERIAL STANDARD STEEL DES. 7 DES. 4,,22, 26 20.00.00 90 0.99 0.97 20 0.98 0.96 50 0.98 0.95 75 0.97 0.94 205 0.96 0.93 230 0.94 0.92 260 0.93 0.92 290 0.92 0.9 35 0.90 0.90 345 0.89 0.89 370 0.88 0.87 400 0.87 0.86 425 0.84 0.84 Above 425 Consult Factory High Temperature Derating Factors When elevated temperatures are encountered, maximum RPM allowable must be derated according to the table on the left. For stainless steel derates, contact the factory. EngineeringData TEMPERATURE ( C) 30 to 50 5 to 260 26 to 35 36 to 425 TYPE OF BEARIN Ball or Roller Ball or Roller Ball or Roller Ball or Roller LUBRICATION OTR REQUIREMENTS AVAILABLE ARRANE- MENTS rease Standard Fan, 8, 9, 9F High Temp. rease High Temp. rease High Temp. rease Shaft Cooler, Shaft Seal Expansion & Non- Expansion Bearings Same as 5 to 260 With Additional of High Temp Aluminum Paint Same as 26 to 35 With Modification of Bearing Pedestal, 8, 9, 9F, 8, 9, 9F, 8, 9F High Temperature Construction Requirements The BCS product line is perfectly suited for high temperature airstream applications. The chart on the left refers to fans of carbon steel construction. When aluminum (spark resistant) or stainless steel construction is required, additional fan modifications may be required. Contact factory in these cases. Performance Correction For Temperature & Altitude The performance curves in this catalogue are based on fans handling standard air at a density of.2 kg/m 3. This is equivalent to air at 2 C at sea level (.325 kpa barometric pressure). Thus, when specified performance is at a density different than Temperature and Altitude Density Ratios AIR TEMP C standard, it must be converted to the equivalent standard conditions before entering the performance curves. The equivalent standard conditions can be calculated by using the Temperature and Altitude Density Ratios shown below. ALTITUDE IN METRES ABOVE SEA LEVEL 0 300 600 900 200 500 750 2000 2400 2800 3500 4500 BAROMETRIC PRESSURE IN kpa.32 97.77 94.32 90.97 87.7 84.55 8.99 79.49 75.62 7.9 65.76 57.73-40.258.24.7.29.089.050.08 0.987 0.939 0.893 0.86 0.77-20.58.7.078.040.002 0.966 0.937 0.909 0.864 0.822 0.752 0.660.035 0.999 0.963 0.929 0.896 0.864 0.838 0.82 0.772 0.735 0.672 0.590 20.000 0.965 0.93 0.898 0.866 0.835 0.809 0.785 0.746 0.7 0.649 0.570 40 0.936 0.903 0.87 0.840 0.8 0.78 0.757 0.734 0.699 0.664 0.608 0.533 65 0.867 0.837 0.807 0.778 0.75 0.724 0.702 0.680 0.647 0.65 0.563 0.494 0 0.786 0.758 0.732 0.706 0.680 0.656 0.636 0.67 0.587 0.558 0.5 0.448 25 0.736 0.7 0.685 0.66 0.637 0.64 0.596 0.577 0.549 0.522 0.478 0.49 50 0.693 0.669 0.645 0.622 0.600 0.578 0.56 0.544 0.57 0.492 0.450 0.395 75 0.654 0.63 0.609 0.587 0.566 0.546 0.529 0.53 0.488 0.464 0.424 0.373 200 0.69 0.597 0.576 0.556 0.536 0.57 0.50 0.486 0.462 0.439 0.402 0.353 225 0.588 0.567 0.547 0.528 0.509 0.49 0.476 0.46 0.439 0.47 0.382 0.335 250 0.560 0.540 0.52 0.503 0.485 0.467 0.453 0.439 0.48 0.397 0.363 0.39 275 0.535 0.56 0.498 0.480 0.463 0.446 0.433 0.420 0.399 0.380 0.347 0.305 300 0.5 0.493 0.476 0.459 0.442 0.426 0.44 0.40 0.38 0.363 0.332 0.29 350 0.470 0.454 0.438 0.422 0.407 0.392 0.380 0.369 0.35 0.334 0.305 0.268 375 0.452 0.436 0.42 0.406 0.39 0.377 0.366 0.355 0.337 0.32 0.293 0.258 400 0.435 0.420 0.405 0.39 0.377 0.363 0.352 0.34 0.325 0.309 0.282 0.248 425 0.420 0.405 0.39 0.377 0.364 0.350 0.340 0.330 0.33 0.298 0.273 0.239 450 0.405 0.39 0.377 0.364 0.35 0.338 0.328 0.38 0.302 0.287 0.263 0.23 500 0.379 0.366 0.353 0.340 0.328 0.36 0.307 0.297 0.283 0.269 0.246 0.26 550 0.356 0.344 0.33 0.320 0.308 0.297 0.288 0.279 0.266 0.253 0.23 0.203 600 0.336 0.324 0.33 0.302 0.29 0.280 0.272 0.264 0.25 0.238 0.28 0.9 www.tcf.com 7

EngineeringData Maximum RPM, Impeller Weights & WR 2 DESIN 4 DESIN 7 DESIN 22 DESIN 26 FAN SIZE MAX. WEIHT WR 2 MAX. WEIHT WR 2 MAX. WEIHT WR 2 MAX. WEIHT WR 2 RPM (kg) (kg-m 2 ) RPM (kg) (kg-m 2 ) RPM (kg) (kg-m 2 ) RPM (kg) (kg-m 2 ) 65 324 4. 0.34 4399 * 9. 0.5 82 293 8.6 0.5 3977 3.8 0.88 200 2674 24.0 0.84 3629 39.0.35 222 2404 37.2.5 3262 52.6 2.2 3777 57.2 2.5 245 283 44.0 2.2 2963 63.5 3.2 3560 69.4 3.6 270 98 48. 3.5 2688 67.6 4.2 32 73.5 4.7 3300 75.7 6.2 300 783 59.4 5.4 249 73.0 5.4 280 78.5 6.2 3300 88.0 7.2 330 62 84.4 9.2 299 9.2 8.4 2546 93.9 9.0 3009 4 365 467 2 2 988 8 2 2302 33 6 2720 24 5 402 329 20 8 803 44 22 2088 58 25 2467 56 24 445 202 87 33 63 207 34 888 223 38 223 224 38 490 92 28 48 48 278 59 780 3 69 2027 38 70 542 986 284 76 338 38 549 407 83 47 3 600 892 338 2 82 430 40 40 446 47 655 598 205 660 8 465 7 984 629 240 273 594 222 504 724 288 730 735 546 252 890 768 369 80 702 328 360 920 454 807 663 677 394 804 94 547 4 904 528 230 84 72 890 602 895 598 730 85 803 944 26 929 6 740 305 * Maximum operating speed is limited to 4000 RPM. RPM listed above 4000 is for derating due to elevated temperatures. Shaft & Bearings Data FAN SIZE 65 82 200 222 245 270 300 330 365 402 ARRANEMENT, 9 & 9F ARRANEMENT 8 DESIN BCS MAX. SHAFT SHAFT BRS. BRS. MTR. Kw DIA. DIA. 4 7.5 30 SDB 25 SDB-C 7 42 HDB 30 SDB-C 4 7.5 38 HDB 25 SDB-C 7 8.5 42 RB-C 38 SDB-C 4 38 HDB 25 SDB-C 7 22 50 RB-C 46 SDB-C 4 42 HDB 30 SDB-C 7 30 50 RB-C 50 SDB-C 22 45 65 RB-C 46 SDB-C 4 50 HDB 30 HDB-C 7 37 55 RB-C 55 HDB-C 22 55 65 RB-C 55 HDB-C 4 8.5 50 HDB 38 SDB-C 7 55 55 RB-C 55 HDB-C 22 45 65 RB-C 55 SDB-C 26 55 75 SRB 55 HDB-C 4 22 55 HDB 38 HDB 7 55 65 RB-C 65 HDB-C 22 55 70 RB-C 55 SDB-C 26 75 SRB 65 HDB-C 4 30 55 HSB 42 HDB 7 55 65 RB-C 65 HDB-C 22 75 RB-C 65 HDB-C 26 75 SRB 65 RB-C 4 37 65 HDB 42 RB 7 90 70 RB-C 50 RB 22 75 RB-C 65 RB-C 26 85 90 SRB 70 RB-C 4 45 65 RB 50 RB 7 75 RB-C 55 RB 22 50 90 RB-C 65 RB-C 26 260 0 SRB 75 RB-C FAN SIZE 445 490 542 600 660 730 807 890 ARRANEMENT, 9 & 9F ARRANEMENT 8 DESIN BCS MAX. SHAFT SHAFT BRS. BRS. MTR. Kw DIA. DIA. 4 55 70 RB 55 RB 7 50 90 RB-C 75 HDB 22 220 0 RB-C 75 RB-C 26 260 0 SRB 75 RB-C 4 75 75 RB 55 RB 7 85 0 RB-C 70 RB-C 22 260 0 RB-C 75 RB-C 26 300 5 SRB 90 RB-C 4 90 90 RB 70 RB 7 220 0 RB-C 75 RB-C 22 300 5 RB-C 90 RB-C 26 370 25 SRB 90 RB-C 4 90 90 RB 70 RB 7 85 0 RB-C 75 RB 22 370 25 SRB 90 RB-C 26 370 25 SRB 0 RB-C 4 0 RB 90 RB 7 220 0 RB-C 90 RB 22 370 25 SRB 0 RB-C 26 370 25 SRB 25 RB-C 4 50 0 RB 90 RB 7 260 5 RB-C 0 RB 22 370 25 SRB 5 RB-C 26 370 Enquire SRB 25 RB-C 4 85 5 SRB 0 RB 7 330 25 SRB 5 RB 22 370 25 SRB 5 RB 26 370 Enquire SRB Enquire SRB 4 220 25 SRB 5 RB 7 370 25 SRB 25 RB 22 370 25 SRB 25 RB-C 26 370 Enquire SRB Enquire HSRB BEARIN CODES: SDB = Standard Duty Ball Bearing HDB = Heavy Duty Ball Bearing RB = Roller Bearing RB-C = Concentric Roller Bearing SRB = Roller Bearing with Split Pillow Block Housing HSRB = Hig-Speed Roller Bearing with Split Pillow Block Housing 8 Twin City Fan Catalogue M400

Bare Fan Weights (kg) FAN DESIN 4 DESIN 7 DESIN 22 DESIN 26 SIZE ARR. ARR. 8 ARR. 9 ARR. 9F ARR. ARR. 8 ARR. 9 ARR. 9F ARR. ARR. 8 ARR. 9 ARR. 9F ARR. ARR. 8 65 22.7 38.6 45.5 50 56.4 90.9 82 45.5 64. 72.7 77.3 95.9 227.3 200 59. 83.6 86.4 209. 267.3 268.2 222 209. 237.7 227.3 254.5 285.5 309. 38.2 49. 404.5 405.9 245 240.9 293.2 263.6 322.7 400 38.8 350 505.9 427.3 428.6 270 357 465 375 393 493 64 58 543 583 758 300 446 580 469 49 5 665 537 563 692 900 330 54 703 568 595 69 898 725 760 883 48 365 495 642 520 544 650 845 682 75 859 6 90 945 64 383 402 639 830 67 703 823 70 864 905 85 4 39 93 380 793 445 755 978 792 829 09 3 59 49 845 490 56 69 298 490 882 43 925 969 278 66 342 406 695 2204 780 865 2077 2700 542 294 670 357 420 685 29 770 854 260 2808 2268 2376 256 3330 600 59 960 592 666 2027 2635 229 2230 2580 3354 2709 2838 3075 3998 660 934 2508 2030 225 257 3272 2643 2769 320 4056 3276 3432 3605 4685 730 236 306 2478 2595 382 437 334 3500 368 4785 3865 4049 4365 5675 807 2393 37 252 3972 564 47 4370 4606 5988 4837 5067 5399 709 890 330 4282 3465 4697 66 4932 567 562 7307 5902 683 6868 8929 EngineeringData www.tcf.com 9

PerformanceCurves Pf - Fan Total Pressure (in W..) 5 7 5 3 2.5 0.7 0.5 0.3 Pf - Fan Total Pressure (Pa) 4,000 3500 RPM 2,000 2850 RPM 2500 RPM 7.5kW,000 2000 RPM 5.5kW 800 4kW 600 450 RPM 3kW 2.2kW 400.5kW.kW 960 RPM 0.75kW 200 0.55kW 720 RPM 0 80 68% Eff. 72% Pk. Eff. BCS 65 0.37kW 0.25kW 0.8kW 0.2 60 6% Eff. 40 0.4 0.6 0.8 qv - Flow (m³ / sec) 2 4 0.7.5 2 3 5 7 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 0 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 5 7 5 3 2.5 0.7 Pf - Fan Total Pressure (Pa) 4,000 2,000,000 800 600 400 960 RPM 200 720 RPM BCS 82 3500 RPM 2850 RPM 2500 RPM 2000 RPM 450 RPM 3kW 2.2kW.5kW.kW 0.75kW 0.55kW kw 7.5kW 5.5kW 4kW PerformanceCurves 0.5 0.3 0 80 60 68% Eff. 73% Pk. Eff. 62% Eff. 0.37kW 0.25kW 0.8kW 0.4 0.6 0.8 2 4 qv - Flow (m³ / sec).5 2 3 5 7 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com

PerformanceCurves Pf - Fan Total Pressure (in W..) 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa) 5,000 3,000,000 800 500 300 960 RPM BCS 200 3500 RPM 2850 RPM 2500 RPM 2000 RPM 8.5kW 5kW kw 7.5kW 450 RPM 5.5kW 4kW 3kW 2.2kW.5kW.kW 0.7 0.5 0.3 720 RPM 0 80 68% Eff. 73% Pk. Eff. 62% Eff. 0.75kW 0.55kW 0.37kW 0.25kW 0.6 0.8 qv - Flow (m³ / sec) 2 4 6.2 2 3 5 7 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 2 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 20 5 7 5 3 2.5 0.7 Pf - Fan Total Pressure (Pa) 6,000 4,000 2,000,000 800 600 400 200 720 RPM 960 RPM 450 RPM BCS 222 2000 RPM 2850 RPM 2500 RPM 3500 RPM.kW 0.75kW.5kW 3kW 2.2kW 4kW 7.5kW 5.5kW kw 37kW 30kW 22kW 8.5kW 5kW PerformanceCurves 0.5 0.3 0.2 500 RPM 0 80 60 74% Eff. 77% Pk. Eff. 40 0.6 0.8 68% Eff. 0.55kW 0.37kW 0.25kW 2 4 6 8 qv - Flow (m³ / sec).2 2 3 5 7 5 20 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 3

PerformanceCurves Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 0.7 Pf - Fan Total Pressure (Pa) 8,000 6,000 4,000 2,000,000 800 600 400 200 500 RPM 720 RPM 960 RPM 450 RPM 2500 RPM 2000 RPM BCS 245 3500 RPM 2850 RPM.kW 0.75kW.5kW 3kW 2.2kW 4kW 7.5kW 5.5kW 22kW 8.5kW 5kW kw 55kW 45kW 37kW 30kW 0.5 0.3 0 80 60 74% Eff. 78% Pk. Eff. 68% Eff. 0.37kW 0.25kW 0.55kW 0.8 2 4 6 8 qv - Flow (m³ / sec) 20.5 2 3 5 7 5 20 30 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 4 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa),000 8,000 6,000 4,000 2,000,000 800 600 400 720 RPM 960 RPM 450 RPM BCS 270 2000 RPM 2850 RPM 2500 RPM 3500 RPM 3kW 4kW 7.5kW 5.5kW kw 22kW 8.5kW 5kW 55kW 45kW 37kW 30kW 90kW 75kW PerformanceCurves 0.7 0.5 0.3 500 200 RPM 0 80 82% Eff. 86% Pk. Eff. 74% Eff. 0.37kW 0.75kW 0.55kW.5kW.kW 2.2kW 2 4 6 8 qv - Flow (m³ / sec) 20 3 5 7 5 20 30 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 5

PerformanceCurves Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa) 8,000 6,000 4,000 2,000,000 800 600 400 720 RPM 960 RPM BCS 300 450 RPM 2000 RPM 2850 RPM 2500 RPM 4kW 7.5kW 5.5kW kw 22kW 8.5kW 5kW 37kW 30kW 55kW 45kW 90kW 75kW 3kW 500 RPM 2.2kW 0.7 0.5 200 0 82% Eff. 86% Pk. Eff..5kW.kW 0.75kW 0.55kW 2 4 6 8 qv - Flow (m³ / sec) 74% Eff. 20 3 5 7 5 20 30 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 6 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa),000 8,000 6,000 4,000 2,000,000 800 600 400 720 RPM 960 RPM 450 RPM BCS 330 2000 RPM 2850 RPM 2500 RPM 5.5kW 7.5kW 22kW 8.5kW 5kW kw 55kW 45kW 37kW 30kW 32kW kw 90kW 75kW PerformanceCurves 0.7 0.5 500 RPM 200 82% Eff. 86% Pk. Eff. 74% Eff..kW.5kW 3kW 2.2kW 4kW 0 2 4 6 8 qv - Flow (m³ / sec) 20 5 7 5 20 30 50 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 7

PerformanceCurves Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 0.7 Pf - Fan Total Pressure (Pa),000 8,000 6,000 4,000 2,000,000 800 600 400 200 500 RPM 720 RPM BCS 365 960 RPM 450 RPM 2500 RPM 2000 RPM 3kW 2.2kW 4kW 7.5kW 5.5kW 22kW 8.5kW 5kW kw 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW 0.5 0.3 0.2 0 80 60 40 300 RPM 82% Eff. 86% Pk. Eff. 74% Eff. 0.55kW 0.37kW.kW 0.75kW.5kW 2 4 6 8 qv - Flow (m³ / sec) 20 3 5 7 5 20 30 50 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 8 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa) 6,000 4,000 2,000,000 800 600 400 500 RPM 720 RPM 960 RPM BCS 402 450 RPM 2000 RPM 4kW 7.5kW 5.5kW kw 22kW 8.5kW 5kW 45kW 37kW 30kW 55kW kw 90kW 75kW 32kW PerformanceCurves 0.7 200 300 RPM 3kW 2.2kW 0.5 0.3 0 80 82% Eff. 86% Pk. Eff..5kW.kW 0.75kW 0.55kW 60 2 4 6 8 qv - Flow (m³ / sec) 74% Eff. 20 40 5 7 5 20 30 50 70 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 9

PerformanceCurves Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa),000 8,000 6,000 4,000 2,000,000 800 600 400 500 RPM 720 RPM 960 RPM BCS 445 450 RPM 2000 RPM 7.5kW 22kW 8.5kW 5kW kw 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW 0.7 0.5 0.3 200 0 80 82% Eff. 86% Pk. Eff. 74% Eff. 5.5kW 4kW 3kW 2.2kW.5kW.kW 4 6 8 20 40 qv - Flow (m³ / sec) 7 5 20 30 50 70 0 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 2 0 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 70 50 30 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa) 20,000,000 8,000 6,000 4,000 2,000,000 800 600 400 500 RPM 720 RPM BCS 490 960 RPM 450 RPM 2000 RPM kw 22kW 8.5kW 5kW 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW PerformanceCurves 0.7 0.5 300 RPM 200 83% Eff. 7.5kW 5.5kW 4kW 3kW 2.2kW 0.5kW 80 4 6 8 20 40 60 qv - Flow (m³ / sec) 86% Pk. Eff. 75% Eff. 7 5 20 30 50 70 0 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 2

PerformanceCurves Pf - Fan Total Pressure (in W..) 20 5 7 5 3 2.5 0.7 Pf - Fan Total Pressure (Pa) 6,000 4,000 2,000,000 800 600 400 200 300 RPM 500 RPM BCS 542 720 RPM 960 RPM 4kW 450 RPM 7.5kW 5.5kW kw 22kW 8.5kW 5kW 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW 0.5 0.3 0.2 200 RPM 0 80 60 40 82% Eff. 85% Pk. Eff. 74% Eff..kW 0.75kW.5kW 3kW 2.2kW 4 6 8 20 40 60 qv - Flow (m³ / sec) 7 5 20 30 50 70 0 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 2 2 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 0.7 0.5 0.3 Pf - Fan Total Pressure (Pa) 8,000 6,000 4,000 2,000,000 800 600 400 300 RPM 200 200 RPM 0 80 60 82% Eff. 86% Pk. Eff. 500 RPM 74% Eff..kW 720 RPM.5kW BCS 600 3kW 2.2kW 960 RPM 4kW 7.5kW 5.5kW 450 RPM kw 30kW 22kW 8.5kW 5kW 55kW 45kW 37kW 60kW 32kW kw 90kW 75kW PerformanceCurves 4 6 8 qv - Flow (m³ / sec) 20 40 60 80 5 20 30 50 70 0 50 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 23

PerformanceCurves Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 Pf - Fan Total Pressure (Pa),000 7,000 5,000 3,000,000 700 500 300 300 RPM 500 RPM BCS 660 720 RPM 960 RPM 450 RPM 22kW 8.5kW 5kW 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW kw 0.7 0.5 0.3 200 RPM 0 83% Eff. 70 6 8 86% Pk. Eff. 74% Eff. 7.5kW 5.5kW 4kW 3kW 2.2kW 20 40 60 80 qv - Flow (m³ / sec) 0 5 20 30 50 70 0 50 200 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 2 4 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 20 5 7 5 3 2.5 0.7 Pf - Fan Total Pressure (Pa) 6,000 4,000 2,000,000 800 600 400 200 200 RPM 300 RPM BCS 730 500 RPM 720 RPM 7.5kW 960 RPM kw 22kW 8.5kW 5kW 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW PerformanceCurves 0.5 0.3 0.2 50 RPM 0 80 60 82% Eff. 85% Pk. Eff. 73% Eff. 5.5kW 4kW 3kW 2.2kW.5kW 40 6 8 20 40 60 80 qv - Flow (m³ / sec) 0 5 20 30 50 70 0 50 200 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 25

PerformanceCurves Pf - Fan Total Pressure (in W..) 20 5 7 5 3 2.5 0.7 0.5 0.3 Pf - Fan Total Pressure (Pa) 6,000 4,000 2,000,000 800 600 300 RPM 400 200 RPM 200 50 RPM 0 80 60 85% Pk. Eff. 73% Eff. 82% Eff. 500 RPM 3kW 2.2kW 4kW BCS 807 720 RPM 7.5kW 5.5kW kw 960 RPM 22kW 8.5kW 5kW 55kW 45kW 37kW 30kW 60kW 32kW kw 90kW 75kW 8 20 40 60 80 qv - Flow (m³ / sec) 0 200 20 30 50 70 0 50 200 300 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. 2 6 Twin City Fan Catalogue M400

Pf - Fan Total Pressure (in W..) 30 20 5 7 5 3 2.5 0.7 0.5 0.3 Pf - Fan Total Pressure (Pa) 7,000 5,000 3,000,000 700 500 300 50 RPM 0 70 200 RPM 82% Eff. 86% Pk. Eff. 300 RPM 74% Eff. 500 RPM 4kW BCS 890 5.5kW 7.5kW 720 RPM 22kW 8.5kW 5kW kw 960 RPM 55kW 45kW 37kW 30kW 20 40 60 80 qv - Flow (m³ / sec) 60kW 32kW kw 90kW 75kW 0 200 PerformanceCurves 30 50 70 0 50 200 300 qv - Flow (CFM) (in Thousands) Notes:. Performance certified is for Installation Type B & D: Free or ducted inlet, ducted outlet. 2. Power rating (kw) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to E-2 watts calculated per AMCA Standard 30. 5. Values shown are for inlet LwiA sound power levels for Installation Type B: Free inlet, ducted outlet. 6. Ratings do not include the effects of duct end correction. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 30. www.tcf.com 27

DimensionalData HQ A A. SIDES Arrangements & 9, Class 4 HA DISCH Q HC KL DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C DC MOTOR (ARR 9 ONLY) SEE NOTE 3 SD DIA. SHAFT SE B A. SCROLL BA BASE ANLES O.D. INLET C N H CW THD H HP HD HH HQ HC H HB HF HA HB HA HH H DA DD DE DF D CW DBD CW TAU CW UBD CW BAU CW BHD DISCH J NOTE 2 WITH OPTIONAL FLANED INLET K K L M FAN HS FAN SHAFT M AH DBD ONLY BH DIA. BASE HOLES FOUNDATION PLAN (FOR DBD SEE NOTE ) MOTOR LOCATION L (LEFT) SHOWN 2 8 Twin City Fan Catalogue M400

DA DC DD DE DF SIZE A AH B BA BH C ARR ARR 9 ARR ARR 9 ARR ARR 9 ARR ARR 9 ARR ARR 9 SEE NOTE 4 65 443 248 335 38 x 50 45 334 508 343 508 368 508 387 508 43 508 82 492 275 370 38 x 50 495 368 584 375 584 400 584 425 584 45 584 200 538 295 405 38 x 50 4 543 402 584 43 584 438 584 464 584 489 584 222 598 327 449 50 x 50 4 603 449 584 457 584 489 584 52 584 559 584 245 659 359 494 50 x 50 4 662 495 584 508 584 540 584 572 584 6 584 270 727 395 543 50 x 50 4 724 545 660 559 660 597 660 629 660 667 660 300 808 438 605 65 x 65 4 803 679 679 679 679 679 679 724 724 762 762 330 892 484 662 65 x 65 4 883 762 762 762 762 762 762 787 787 832 832 365 983 537 734 65 x 65 4 978 737 737 749 749 800 800 85 85 902 902 402 83 592 808 75 x 75 2 78 83 83 838 838 895 895 940 940 03 03 445 97 656 894 75 x 75 2 9 899 899 902 902 978 978 6 6 99 99 490 39 75 98 75 x 75 2 3 99 99 99 99 73 73 8 8 207 207 542 457 808 89 75 x 0 2 45 94 94 5 5 8 8 245 245 327 327 600 63 887 202 75 x 0 2 604 2 2 29 29 302 302 372 372 46 46 660 770 994 326 90 x 25 2 762 332 332 334 334 46 46 499 499 600 600 730 962 83 462 90 x 25 2 949 473 473 448 448 568 568 638 638 765 765 807 270 95 66 90 x 25 2 256 630 630 600 600 75 75 829 829 943 943 890 239 276 78 90 x 25 2 2372 778 778 759 759 873 873 988 988 259 259 DimensionalData SIZE D FR H DX A B C ARR ARR 9 ARR 9 ARR ARR 9 HA HB HC HD HF H 65 495 508 25 x 25 32M 66 2 2 308 743 930 334 565 467 383 359 338 38 82 559 584 32 x 32 60M 660 2.5 2 330 803 76 368 630 522 424 399 375 35 200 6 584 32 x 32 60M 7 2.5 2 356 864 402 686 568 467 440 43 386 222 673 648 32 x 32 60L 794 2.5 2 397 972 49 449 762 629 59 484 456 427 245 730 7 32 x 32 60L 85 2.5 2 425 54 94 495 838 689 568 533 502 470 270 800 775 38 x 38 80M 94 2.5 2 457 53 34 545 926 764 627 589 554 59 300 902 902 38 x 38 80L 4 3 2.5 52 46 46 605 24 845 697 654 66 578 330 99 99 38 x 38 200M 8 3 2.5 559 540 540 667 29 929 765 72 678 635 365 4 4 38 x 38 200M 29 3 2.5 6 6 6 737 242 9 85 800 753 705 402 56 56 38 x 38 200L 334 3 2.5 667 724 724 83 367 9 940 88 829 776 445 270 270 38 x 38 225S 435 3 2.5 78 85 85 899 508 233 38 972 94 857 490 39 39 50 x 50 225S 562 3 2.5 78 946 946 99 669 369 40 72 08 945 542 530 530 50 x 50 250M 702 3 2.5 85 2223 2223 94 838 506 264 86 6 46 600 683 683 50 x 50 250M 854 3 2.5 927 2330 2330 2 2032 662 397 33 235 57 660 86 86 65 x 65 250M 2032 3 2.5 6 2572 2572 332 2237 832 534 443 356 268 730 205 205 65 x 65 250M 2235 3 3 8 2785 2785 473 2472 2023 700 597 502 407 807 226 226 65 x 65 250M 2426 3 3 23 303 303 630 273 2230 880 765 66 556 890 2483 2483 65 x 65 250M 2705 5 3 353 3255 3255 778 299 245 2072 946 830 75 SIZE HH HP HQ J K KL KS L P M N ARR ARR 9 ARR ARR 9 Q SD SE 65 297 492 226 9 76 8 x 7 38 505 222 22 568 756 22 30 95 82 327 54 245 208 89 x 8 343 66 245 22 624 897 245 38 8 200 359 588 260 226 89 x 8 368 66 270 22 667 94 268 38 8 222 399 648 305 254 2 4 x 9 49 597 298 22 765 943 298 46 2 245 438 708 327 276 4 4 x 9 457 597 327 22 838 978 329 50 33 270 484 776 35 300 4 4 x 9 508 670 359 22 93 75 362 50 33 300 540 870 394 338 27 6 x 683 683 403 29 32 32 402 55 46 330 592 954 422 367 27 6 x 749 749 44 29 227 227 445 55 46 365 657 45 457 402 27 8 x 749 749 480 29 262 262 489 65 46 402 724 57 508 446 27 8 x 762 762 530 35 33 33 540 65 46 445 800 272 55 489 40 20 x 2 803 803 58 35 4 4 597 70 59 490 88 394 594 532 40 20 x 2 83 83 645 35 462 462 657 75 59 542 976 557 58 673 598 52 25 x 4 930 930 702 48 646 646 727 90 7 600 80 73 670 730 656 52 25 x 4 924 924 778 48 697 697 805 90 7 660 8 896 835 88 730 78 28 x 6 99 99 842 60 85 85 883 0 97 730 3 2086 2026 887 799 9 28 x 6 67 67 943 60 2008 2008 978 0 2 807 45 2294 2229 960 875 203 32 x 8 43 43 38 60 280 280 83 5 229 890 599 255 245 43 957 203 32 x 8 29 29 78 60 2338 2338 92 25 229 NOTES:. Punched outlet flanges are included on all discharges per AC4987, or for 'DBD' AC4868. 2. Optional punched inlet per AS363. 3. 'CW' rotation is shown. 'CCW' rotation is similar but opposite. 4. For fans with inlet box at 90 o or 270 o use 'BAU' discharge dimension 'DF' for centerline height. 5. 'FR' equals maximum motor frame. AC704D www.tcf.com 29

DimensionalData HQ A A. SIDES Arrangements & 9, Class 7 HA DISCH Q HC KL NOTE DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C DC NOTE 4 SE SD DIA. SHAFT B A. SCROLL BA BASE ANLES O.D. INLET C D H N CW THD H HP HD HH HQ HC H HB HF HA HB HA HH H DA DD DF D CW DBD CW TAU CW UBD CW BAU D CW BHD M M DISCH J NOTE 2 K K FAN HS FAN SHAFT WITH OPTIONAL FLANED INLET L BH DIA. BASE HOLES FOUNDATION PLAN (FOR DBD SEE NOTE ) 3 0 Twin City Fan Catalogue M400

DA DC DD DE SIZE A B BA BH C ARR ARR 9 ARR ARR 9 ARR ARR 9 ARR ARR 9 DF D SEE NOTE 4 FOR ARRANEMENT ARR ARR 9 ARR ARR 9 65 446 338 38 x 50 45 334 603 343 603 368 603 387 603 43 603 495 603 82 495 372 50 x 50 4 495 368 667 375 667 400 667 425 667 45 667 559 667 200 54 406 50 x 50 4 543 402 749 43 749 438 749 464 749 489 749 6 749 222 602 45 65 x 65 4 603 449 762 457 762 489 762 52 762 559 762 673 762 245 665 499 65 x 65 4 662 495 768 508 768 540 768 572 768 6 768 730 768 270 734 548 65 x 65 4 724 545 838 559 838 597 838 629 838 667 838 800 838 300 83 608 75 x 75 2 803 605 85 622 85 660 85 699 85 749 85 883 883 330 897 665 75 x 75 2 883 667 959 686 959 724 959 762 959 89 959 959 959 365 988 737 75 x 75 2 978 737 959 749 959 800 959 85 959 902 959 54 54 402 87 8 75 x 0 2 78 83 22 838 22 895 22 940 22 03 22 56 56 445 202 897 75 x 0 2 9 899 4 902 4 978 4 6 4 99 99 270 270 490 324 984 75 x 0 2 3 99 4 99 4 73 73 8 8 207 207 39 39 542 462 92 90 x 25 2 45 94 94 5 5 8 8 245 245 327 327 543 543 600 68 205 90 x 25 2 604 2 2 29 29 302 302 372 372 46 46 695 695 660 775 329 0 x 50 2 762 332 332 334 334 46 46 499 499 600 600 873 873 730 965 465 0 x 50 2 949 473 473 448 448 568 568 638 638 765 765 2064 2064 807 273 69 0 x 50 2 256 630 630 600 600 75 75 829 829 943 943 2273 2273 890 2394 78 0 x 50 2 2372 778 778 759 759 873 873 988 988 259 259 2496 2496 DimensionalData SIZE DX FR H A B C D ARR 9 ARR ARR 9 HA HB HC HD HF H HH HP 65 32 x 32 60L 66 3 3 308 588 708 45 334 572 475 384 360 340 39 298 494 82 32 x 32 80L 686 3 3 343 686 765 34 368 630 524 425 400 376 353 329 543 200 32 x 32 200L 737 3 3 368 737 826 207 402 687 570 467 44 44 387 360 589 222 32 x 32 200L 89 3 3 4 89 946 276 449 764 630 52 486 457 429 400 662 245 38 x 38 200L 876 5 5 438 876 32 324 495 845 699 572 537 505 473 44 724 270 38 x 38 225M 940 5 5 470 940 34 403 545 927 767 630 592 557 522 487 792 300 38 x 38 225M 67 5 5 533 67 257 489 605 26 846 699 656 67 579 54 884 330 38 x 38 250M 43 5 5 572 43 365 78 667 29 930 767 722 679 637 594 969 365 38 x 38 250M 245 5 5 622 245 473 788 737 243 2 854 802 754 706 659 59 402 50 x 50 250M 334 5 5 667 334 626 206 83 376 34 94 883 830 778 725 84 445 50 x 50 250M 435 5 5 78 435 788 246 899 58 248 4 973 96 859 802 299 490 50 x 50 250M 562 5 5 78 562 924 2232 99 669 370 4 73 946 883 42 542 65 x 65 250M 702 5 5 85 702 2083 238 94 849 52 267 87 8 48 978 584 600 65 x 65 250M 880 5 5 940 880 2273 2496 2 2042 676 399 34 237 59 8 740 660 65 x 65 250M 2032 5 5 6 2032 2499 2670 332 2239 834 537 445 357 270 83 923 730 65 x 65 250M 2235 5 5 8 2235 27 2807 473 2473 2024 702 599 503 408 33 23 807 65 x 65 250M 245 5 5 226 245 2940 2959 630 273 2232 883 767 662 557 453 232 890 65 x 65 250M 273 5 5 365 273 378 32 778 299 2453 2073 948 832 76 600 2542 SIZE HQ J K KL L P SE KS M N Q SD ARR ARR 9 ARR ARR 9 ARR ARR 9 ARR ARR 9 65 246 98 89 8 4 x 9 24 578 222 22 589 945 22 46 2 2 82 262 24 4 27 4 x 9 267 635 245 22 656 37 245 46 27 40 200 279 232 4 52 4 x 9 292 673 270 22 699 24 268 50 27 7 222 34 260 27 52 4 x 9 349 679 292 29 797 59 298 50 40 7 245 338 284 52 52 6 x 387 679 32 29 884 83 329 55 65 7 270 363 3 52 65 6 x 438 708 353 29 960 243 362 55 65 78 300 406 346 78 65 8 x 483 75 397 35 73 286 402 65 97 78 330 435 375 78 9 8 x 533 886 435 35 53 5 445 65 97 203 365 470 4 78 9 20 x 2 572 886 473 35 226 546 489 70 97 203 402 533 46 203 9 20 x 2 6 45 58 48 340 756 540 75 222 203 445 576 503 203 9 25 x 4 686 45 568 48 465 799 597 90 229 203 490 69 546 229 9 28 x 6 737 45 632 48 584 842 657 0 254 203 542 58 699 63 229 9 28 x 6 749 48 689 60 664 9 727 0 254 203 600 683 756 670 24 9 28 x 6 826 48 765 60 8 969 805 0 267 203 660 838 843 744 254 9 28 x 6 889 60 829 73 96 2056 883 0 279 203 730 2026 9 83 267 9 32 x 8 965 60 930 73 28 224 978 5 292 203 807 2245 988 889 267 9 32 x 8 4 60 26 73 2270 2200 83 25 292 203 890 2464 68 970 279 9 32 x 8 8 60 65 73 2440 228 92 25 305 203 NOTES:. Punched outlet flanges are included on all discharges per AC4987, or for 'DBD' AC4868. 2. Optional punched inlet per AS363. 3. 'CW' rotation is shown. 'CCW' rotation is similar but opposite. 4. For fans with inlet box at 90 o or 270 o use 'BAU' discharge dimension 'DF' for centerline height. 5. 'FR' equals maximum motor frame. BC4952E ARR. BC4955D ARR. 9 www.tcf.com 3

DimensionalData Arrangements (Sizes 222-890) & 9 (Sizes 222-542), Class 22 HQ A A. SIDES HA DISCH Q HC KL NOTE DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C DC NOTE 4 SE SD DIA. SHAFT B A. SCROLL BA BASE ANLES O.D. INLET C H N CW THD H HP HD HH HQ HC H HB HF HA HB HA HH H DA DD DE DF D CW DBD CW TAU CW UBD CW BAU CW BHD M M DISCH J NOTE 2 WITH OPTIONAL FLANED INLET K K FAN HS FAN SHAFT L BH DIA. BASE HOLES FOUNDATION PLAN (FOR DBD SEE NOTE ) 3 2 Twin City Fan Catalogue M400

DA DC DD DE SIZE A B BA BH C ARR ARR 9 ARR ARR 9 ARR ARR 9 ARR ARR 9 DF D SEE NOTE 4 ARR ARR 9 ARR ARR 9 222 605 454 75 x 75 4 603 449 857 457 857 489 857 52 857 559 857 673 857 245 665 499 75 x 75 4 662 495 864 508 864 540 864 572 864 6 864 730 864 270 734 548 75 x 75 4 724 545 864 559 864 597 864 629 864 667 864 800 864 300 83 608 75 x 0 2 803 605 883 622 883 660 883 699 883 749 883 883 883 330 900 668 75 x 0 2 883 667 959 686 959 724 959 762 959 89 959 959 959 365 99 740 75 x 0 2 978 737 4 749 4 800 4 85 4 902 4 54 54 402 9 84 90 x 25 2 78 83 54 838 54 895 54 940 54 03 54 68 68 445 205 900 0 x 50 2 9 899 80 902 80 978 80 6 80 99 99 283 283 490 327 988 0 x 50 2 3 99 80 99 80 73 80 8 8 207 207 46 403 542 465 96 0 x 50 2 45 94 5 5 5 8 8 245 245 327 327 556 556 600 62 208 0 x 50 2 604 2 29 302 372 46 708 660 778 332 0 x 50 2 762 332 334 46 499 600 873 730 969 468 0 x 50 2 949 473 448 568 638 765 2064 807 277 623 0 x 50 2 256 630 600 75 829 943 2273 890 2397 784 0 x 50 2 2372 778 759 873 988 259 2496 DimensionalData SIZE DX FR H A B C ARR 9 ARR ARR 9 HA HB HC HD HF H HH HP HQ 222 50 x 50 225M 89 5 5 4 975 334 449 778 65 522 487 459 430 402 676 245 50 x 50 225M 876 5 5 438 57 372 495 852 7 572 537 505 473 44 737 270 50 x 50 225M 965 5 5 483 59 422 545 937 780 630 592 557 522 487 805 300 50 x 50 225M 67 5 5 533 308 534 605 35 859 699 656 67 579 54 9 330 50 x 50 250M 43 6 6 572 49 762 667 40 945 768 724 68 638 595 995 365 50 x 50 250M 245 6 6 622 527 988 737 252 35 856 803 756 708 660 86 402 50 x 50 250M 334 6 6 667 680 25 83 378 35 943 884 832 780 727 2 445 50 x 50 250M 46 6 6 730 892 2242 899 59 249 43 975 98 86 803 35 490 50 x 50 250M 588 6 6 794 2029 2327 99 670 372 43 75 948 884 473 542 65 x 65 250M 727 6 6 864 237 2435 94 849 522 268 89 9 49 979 6 534 600 65 x 65 880 6 6 940 2327 2 2043 678 400 36 238 6 83 767 686 660 65 x 65 2057 6 6 29 2502 332 2240 835 538 446 359 272 84 924 854 730 65 x 65 226 6 6 30 275 473 2473 2026 703 600 505 4 34 25 2042 807 65 x 65 245 6 6 226 2943 630 2732 2234 884 769 664 559 454 2323 2248 890 65 x 65 273 6 6 365 38 778 2992 2454 2075 949 834 78 602 2543 2467 SIZE J K KL L P SE KS M N Q SD ARR ARR 9 ARR ARR 9 ARR ARR 9 ARR ARR 9 222 329 268 52 78 8 x 356 75 286 35 837 227 298 65 65 97 245 35 29 65 78 8 x 394 708 34 35 96 249 329 65 84 203 270 376 36 9 65 8 x 445 708 346 35 8 249 362 65 2 78 300 432 359 203 65 20 x 2 495 72 384 48 24 305 402 70 222 78 330 462 389 229 9 20 x 2 546 889 422 48 230 529 445 75 248 203 365 497 424 229 9 20 x 2 584 45 473 48 3 79 489 75 254 203 402 560 475 254 9 25 x 4 622 57 505 60 424 783 540 90 279 203 445 629 530 254 9 28 x 6 7 60 543 73 568 842 597 0 279 203 490 672 573 279 9 28 x 6 762 60 607 73 688 884 657 0 305 203 542 725 627 279 9 32 x 8 762 60 676 73 74 938 727 5 305 203 600 783 684 305 32 x 8 838 753 73 900 805 25 330 660 845 746 305 32 x 8 889 829 73 203 883 25 330 730 93 84 343 32 x 8 965 930 73 296 978 25 368 807 989 89 343 32 x 8 4 26 73 2348 83 25 368 890 70 972 356 32 x 8 8 65 73 258 92 25 38 NOTES:. Punched outlet flanges are included on all discharges per AC4988, or for 'DBD' AC4869. 2. Optional punched inlet per AS363. 3. 'CW' rotation is shown. 'CCW' rotation is similar but opposite. 4. For fans with inlet box at 90 o or 270 o use 'BAU' discharge dimension 'DF' for centerline height. 5. 'FR' equals maximum motor frame. BC4953D ARR. BC4956D ARR. 9 www.tcf.com 33

DimensionalData HQ A A. SIDES Arrangement, Class 26 HA DISCH Q HC KL NOTE DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C DC SE SD DIA. SHAFT B A. SCROLL BA BASE ANLES O.D. INLET C N CW THD H H HP HB HD HH HQ HC H HA HB HF HH HA H DA DD DF D CW DBD CW TAU CW UBD CW BAU CW BHD DISCH J NOTE 2 WITH OPTIONAL FLANED INLET K K L M FAN HS FAN SHAFT M FOUNDATION PLAN (FOR DBD SEE NOTE ) BH DIA. BASE HOLES 3 4 Twin City Fan Catalogue M400

SIZE A B BA BH C DA DC DD DE SEE NOTE 4 DF D DX A 270 734 548 75 x 75 4 724 545 559 597 629 667 800 50 x 50 965 5 300 83 608 75 x 0 2 803 605 622 660 699 749 883 50 x 50 67 5 330 900 668 75 x 0 2 883 667 686 724 762 89 959 50 x 50 43 6 365 99 740 75 x 0 2 978 737 749 800 85 902 54 50 x 50 245 6 402 9 84 90 x 25 2 78 83 838 895 940 03 68 50 x 50 359 6 445 205 900 0 x 50 2 9 899 902 978 6 99 283 50 x 50 486 6 490 327 988 0 x 50 2 3 99 99 73 8 207 46 50 x 50 63 6 542 465 96 0 x 50 2 45 94 5 8 245 327 556 65 x 65 753 6 600 62 208 0 x 50 2 604 2 29 302 372 46 708 65 x 65 905 6 660 778 332 0 x 50 2 762 332 334 46 499 600 873 65 x 65 2057 6 730 969 468 0 x 50 2 949 473 448 568 638 765 2064 65 x 65 226 6 807 277 623 0 x 50 2 256 630 600 75 829 943 2273 65 x 65 245 6 890 2397 784 0 x 50 2 2372 778 759 873 988 259 2496 65 x 65 273 6 SIZE B C H HA HB HC HD HF H HH HP HQ J K KL 270 5 483 59 545 937 780 630 592 557 522 487 805 376 36 9 300 5 533 308 605 35 859 699 656 67 579 54 9 432 359 203 330 6 572 49 667 40 945 768 724 68 638 595 995 462 389 229 365 6 622 527 737 252 35 856 803 756 708 660 86 497 424 229 402 6 679 680 83 378 35 943 884 832 780 727 2 560 475 254 445 6 743 892 899 59 249 43 975 98 86 803 35 629 530 254 490 6 806 2029 99 670 372 43 75 948 884 473 672 573 279 542 6 876 237 94 849 522 268 89 9 49 979 6 534 725 627 279 600 6 953 2327 2 2043 678 400 36 238 6 83 767 686 783 684 305 660 6 29 2502 332 2240 835 538 446 359 272 84 924 854 845 746 305 730 6 30 275 473 2473 2026 703 600 505 4 34 25 2042 93 84 343 807 6 226 2943 630 2732 2234 884 769 664 559 454 2323 2248 989 89 343 890 6 365 38 778 2992 2454 2075 949 834 78 602 2543 2467 70 972 356 DimensionalData SIZE KS L M N P Q SD SE 270 20 x 2 445 346 35 8 362 75 2 300 20 x 2 495 384 48 24 402 75 222 330 20 x 2 546 422 48 230 445 75 248 365 25 x 4 584 473 48 3 489 90 254 402 28 x 6 622 505 60 424 540 0 279 445 28 x 6 7 543 73 568 597 0 279 490 32 x 8 762 607 73 688 657 5 305 542 32 x 8 762 676 73 74 727 25 305 600 32 x 8 838 753 73 900 805 25 330 660 32 x 8 889 829 73 203 883 25 330 730 Enquire 965 930 73 296 978 Enquire 368 807 Enquire 4 26 73 2348 83 Enquire 368 890 Enquire 8 65 73 258 92 Enquire 38 BC4954C NOTES:. Punched outlet flanges are included on all discharges per AC4988, or for 'DBD' AC4869. 2. Optional punched inlet per AS363. 3. 'CW' rotation is shown. 'CCW' rotation is similar but opposite. 4. For fans with inlet box at 90 o or 270 o use 'BAU' discharge dimension 'DF' for centerline height. www.tcf.com 35

DimensionalData HQ A A. SIDES Arrangements 9F, Class 4 HA DISCH Q HC KL SE DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C O.D. INLET NOTE 3 DC SD DIA. SHAFT B A. SCROLL BA BASE ANLES V C H N CLOCKWISE ROTATION, TOP HORIZONTAL DISCHARE CW THD MOTOR LOCATION L (LEFT) SHOWN. SEE NOTE 3. H HP HD HH HQ HC H HB HF HA HB HA HH H DA DD DE DF D CW DBD CW TAU CW UBD CW BAU CW BHD J S M M AH DBD ONLY DISCH NOTE 2 WITH OPTIONAL FLANED INLET K K L T FAN HS FAN SHAFT FOUNDATION PLAN (FOR DBD SEE NOTE ) MOTOR LOCATION L (LEFT) SHOWN BH DIA. BASE HOLES 3 6 Twin City Fan Catalogue M400

SIZE A AH B BA BH C DA DC DD DE DF D DX FR A 65 443 248 335 38 x 50 45 334 343 368 387 43 495 25 x 25 32M 66 2 82 492 275 370 38 x 50 495 368 375 400 425 45 546 32 x 32 60L 660 2.5 200 538 295 405 38 x 50 4 543 402 43 438 464 489 597 32 x 32 60L 7 2.5 222 598 327 449 50 x 50 4 603 449 457 489 52 559 660 32 x 32 60L 794 2.5 245 659 359 494 50 x 50 4 662 495 508 540 572 6 78 32 x 32 80L 85 2.5 270 727 395 543 50 x 50 4 724 545 559 597 629 667 787 38 x 38 80L 94 2.5 300 808 438 605 65 x 65 4 803 605 622 660 699 749 870 38 x 38 80L 4 3 330 892 484 662 65 x 65 4 883 667 686 724 762 89 946 38 x 38 200L 8 3 365 983 537 734 65 x 65 4 978 737 749 800 85 902 4 38 x 38 200L 29 3 402 83 592 808 75 x 75 2 78 83 838 895 940 03 56 38 x 38 225M 334 3 445 97 656 894 75 x 75 2 9 899 902 978 6 99 270 38 x 38 225M 435 3 490 39 75 98 75 x 75 2 3 99 99 73 8 207 39 50 x 50 250M 562 3 542 457 808 89 75 x 0 2 45 94 5 8 245 327 530 50 x 50 250M 702 3 600 63 887 202 75 x 0 2 604 2 29 302 372 46 683 50 x 50 280M 854 3 660 770 994 326 90 x 25 2 762 332 334 46 499 600 86 65 x 65 280M 2032 3 730 962 83 462 90 x 25 2 949 473 448 568 638 765 205 65 x 65 280M 2235 3 DimensionalData SIZE B C H HA HB HC HD HF H HH HP HQ J K KL KS 65 2 308 940 334 565 467 383 359 338 38 297 492 226 9 76 8 x 7 82 2 330 5 368 630 522 424 399 375 35 327 54 245 208 89 x 8 200 2 356 49 402 686 568 467 440 43 386 359 588 260 226 89 x 8 222 2 397 94 449 762 629 59 484 456 427 399 648 305 254 2 4 x 9 245 2 425 302 495 838 689 568 533 502 470 438 708 327 276 4 4 x 9 270 2 457 350 545 926 764 627 589 554 59 484 776 35 300 4 4 x 9 300 2 52 438 605 24 845 697 654 66 578 540 870 394 338 27 6 x 330 2.5 559 532 667 29 929 765 72 678 635 592 954 422 367 27 6 x 365 2.5 6 602 737 242 9 85 800 753 705 657 45 457 402 27 8 x 402 2.5 667 748 83 367 9 940 88 829 776 724 57 508 446 27 8 x 445 2.5 78 834 899 508 233 38 972 94 857 800 272 55 489 40 20 x 2 490 2.5 78 2062 99 669 369 40 72 08 945 88 394 594 532 40 20 x 2 542 2.5 85 222 94 838 506 264 86 6 46 976 557 58 673 598 52 25 x 4 600 2.5 927 2500 2 2032 662 397 33 235 57 80 73 670 730 656 52 25 x 4 660 2.5 6 2675 332 2237 832 534 443 356 268 8 896 835 88 730 78 28 x 6 730 3 8 282 473 2472 2023 700 597 502 407 3 2086 2026 887 799 9 28 x 6 SIZE L M N P Q S SD SE T V 65 425 222 22 765 22 607 30 95 38 85 82 552 245 22 922 245 705 38 8 502 978 200 552 270 22 940 268 705 38 8 502 03 222 552 298 22 975 298 705 46 2 502 32 245 66 327 22 73 329 768 50 33 565 24 270 66 359 22 97 362 768 50 33 565 56 300 622 403 29 54 402 775 55 46 565 207 330 686 44 29 246 445 873 55 46 622 350 365 686 480 29 28 489 873 65 46 622 388 402 737 530 35 376 540 988 65 46 667 553 445 737 58 35 432 597 988 70 59 667 604 490 876 645 35 64 657 30 75 59 806 8 542 889 702 48 707 727 43 90 7 806 880 600 54 778 48 929 805 232 90 7 972 2045 660 67 842 60 2042 883 232 0 97 972 28 730 67 943 60 222 978 232 0 2 972 22 AC705C NOTES:. Punched outlet flanges are included on all discharges per AC4986, or for 'DBD' AC706. 2. Optional punched inlet per AS363. 3. 'FR' equals maximum motor frame. www.tcf.com 37

DimensionalData HQ A A. SIDES Arrangement 9F, Class 7 HA DISCH Q HC KL NOTE DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C SE O.D. INLET NOTE 3 DC SD DIA. SHAFT B A. SCROLL BA BASE ANLES C CLOCKWISE ROTATION, TOP HORIZONTAL DISCHARE CW THD MOTOR LOCATION L (LEFT) SHOWN. SEE NOTE 3. H N H HP HD HH HQ HC H HB HF HA HB HA HH H DA DD DE DF D CW DBD CW TAU CW UBD CW BAU D CW BHD J S DIA. BASE BH HOLES M M NOTE 2 DISCH K K L T MOTOR FAN HS FAN SHAFT WITH OPTIONAL FLANED INLET FOUNDATION PLAN (FOR DBD SEE NOTE ) MOTOR LOCATION L (LEFT) SHOWN 3 8 Twin City Fan Catalogue M400

SIZE A B BA BH C DA DC DD DE DF D DX FR 65 446 338 38 x 50 45 334 343 368 387 43 495 32 x 32 60L 66 82 495 372 50 x 50 4 495 368 375 400 425 45 559 32 x 32 80L 686 200 54 406 50 x 50 4 543 402 43 438 464 489 6 32 x 32 200L 737 222 602 45 65 x 65 4 603 449 457 489 52 559 673 32 x 32 200L 89 245 665 499 65 x 65 4 662 495 508 540 572 6 730 38 x 38 200L 876 270 734 548 65 x 65 4 724 545 559 597 629 667 800 38 x 38 225M 940 300 83 608 75 x 75 2 803 605 622 660 699 749 883 38 x 38 225M 67 330 897 665 75 x 75 2 883 667 686 724 762 89 959 38 x 38 225M 43 365 988 737 75 x 75 2 978 737 749 800 85 902 54 38 x 38 250M 245 402 87 8 75 x 0 2 78 83 838 895 940 03 56 50 x 50 280M 334 445 202 897 75 x 0 2 9 899 902 978 6 99 270 50 x 50 280M 435 490 324 984 75 x 0 2 3 99 99 73 8 207 39 50 x 50 280M 562 542 462 92 90 x 25 2 45 94 5 8 245 327 543 65 x 65 280M 702 600 68 205 90 x 25 2 604 2 29 302 372 46 695 65 x 65 280M 880 660 775 329 0 x 50 2 762 332 334 46 499 600 873 65 x 65 280M 2032 730 965 465 0 x 50 2 949 473 448 568 638 765 2064 65 x 65 280M 2235 807 273 69 0 x 50 2 256 630 600 75 829 943 2273 65 x 65 280M 245 890 2394 78 0 x 50 2 2372 778 759 873 988 259 2496 65 x 65 280M 273 DimensionalData SIZE A B C D H HA HB HC HD HF H HH HP HQ 65 3 3 308 588 8 334 572 475 384 360 340 39 298 494 82 3 3 343 686 97 368 630 524 425 400 376 353 329 543 200 3 3 368 737 243 402 687 570 467 44 44 387 360 589 222 3 3 4 89 33 449 764 630 52 486 457 429 400 662 245 5 5 438 876 360 495 845 699 572 537 505 473 44 724 270 5 5 470 940 440 545 927 767 630 592 557 522 487 792 300 5 5 533 67 526 605 26 846 699 656 67 579 54 884 330 5 5 572 43 583 667 29 930 767 722 679 637 594 969 365 5 5 622 245 827 737 243 2 854 802 754 706 659 59 402 5 5 667 334 20 83 376 34 94 883 830 778 725 84 445 5 5 78 435 286 899 58 248 4 973 96 859 802 299 490 5 5 78 562 2272 99 669 370 4 73 946 883 42 542 5 5 85 702 242 94 849 52 267 87 8 48 978 584 58 600 5 5 940 880 2535 2 2042 676 399 34 237 59 8 740 683 660 5 5 6 2032 27 332 2239 834 537 445 357 270 83 923 838 730 5 5 8 2235 2846 473 2473 2024 702 599 503 408 33 23 2026 807 5 5 226 245 2999 630 273 2232 883 767 662 557 453 232 2245 890 5 5 365 273 36 778 299 2453 2073 948 832 76 600 2542 2464 SIZE J K KL KS L M N P Q S SD SE T V 65 246 98 8 4 x 9 578 222 22 945 22 734 46 2 527 984 82 262 24 27 4 x 9 635 245 22 37 245 768 46 40 584 4 200 279 232 52 4 x 9 673 270 22 24 268 883 50 7 66 87 222 34 260 52 4 x 9 679 292 29 59 298 889 50 7 66 26 245 338 284 52 6 x 679 32 29 83 329 889 55 7 66 245 270 363 3 78 6 x 708 353 29 262 362 994 55 97 645 38 300 406 346 7 8 x 75 397 35 305 402 00 65 97 645 432 330 435 375 7 8 x 75 435 35 334 445 00 65 97 645 470 365 470 4 203 20 x 2 886 473 35 572 489 30 70 229 86 638 402 533 46 222 20 x 2 45 58 48 807 540 232 75 254 962 784 445 576 503 222 25 x 4 45 568 48 849 597 232 90 254 962 835 490 69 546 222 28 x 6 45 632 48 892 657 232 0 254 962 899 542 699 63 229 28 x 6 48 689 60 975 727 232 0 267 953 956 600 756 670 229 28 x 6 48 765 60 2032 805 232 0 267 953 2032 660 843 744 229 28 x 6 60 829 73 29 883 232 0 267 953 2096 730 9 83 229 32 x 8 60 930 73 288 978 232 5 267 953 297 807 988 889 229 32 x 8 60 26 73 2264 83 232 25 267 953 2292 890 68 970 229 32 x 8 60 65 73 2345 92 232 25 267 953 2432 BC4957F NOTES:. Punched outlet flanges are included on all discharges per AC4987, or for 'DBD' AC4924. 2. Optional punched inlet per AS363. 3. 'FR' equals maximum motor frame. www.tcf.com 39

DimensionalData HQ A A. SIDES Arrangement 9F, Class 22 HA DISCH Q HC KL NOTE DX DISCH. FLANE KS KWY SIZE P OUTSIDE HOUSIN OUTSIDE HOUSIN A B J C SE O.D. INLET NOTE 3 DC SD DIA. SHAFT B A. SCROLL BA BASE ANLES C CLOCKWISE ROTATION, TOP HORIZONTAL DISCHARE CW THD MOTOR LOCATION L (LEFT) SHOWN. SEE NOTE 3. H N H HP HB HD HH HQ HC H HA HB HF HH HA H CW DBD DA DD CW TAU DE DF CW UBD CW BAU CW BHD D DISCH J NOTE 2 K K L T MOTOR S DIA. BASE BH HOLES M M FAN HS FAN SHAFT WITH OPTIONAL FLANED INLET FOUNDATION PLAN (FOR DBD SEE NOTE ) MOTOR LOCATION L (LEFT) SHOWN 4 0 Twin City Fan Catalogue M400

SIZE A B BA BH C DA DC DD DE DF D DX FR 222 605 454 75 x 75 4 603 449 457 489 52 559 673 50 x 50 225M 89 245 665 499 75 x 75 4 662 495 508 540 572 6 730 50 x 50 225M 876 270 734 548 75 x 75 4 724 545 559 597 629 667 800 50 x 50 225M 965 300 83 608 75 x 0 2 803 605 622 660 699 749 883 50 x 50 225M 67 330 900 668 75 x 0 2 883 667 686 724 762 89 959 50 x 50 250M 43 365 99 740 75 x 0 2 978 737 749 800 85 902 54 50 x 50 280M 245 402 9 84 90 x 25 2 78 83 838 895 940 03 68 50 x 50 280M 334 445 205 900 0 x50 2 9 899 902 978 6 99 283 50 x 50 280M 46 490 327 988 0 x50 2 3 99 99 73 8 207 403 50 x 50 280M 588 542 465 96 0 x50 2 45 94 5 8 245 327 556 65 x 65 280M 727 SIZE A B C H HA HB HC HD HF H HH HP HQ 222 5 5 4 370 449 778 65 522 487 459 430 402 676 245 5 5 438 408 495 852 7 572 537 505 473 44 737 270 5 5 483 459 545 937 780 630 592 557 522 487 805 300 5 5 533 570 605 35 859 699 656 67 579 54 9 330 6 6 572 802 667 40 945 768 724 68 638 595 995 365 6 6 622 2027 737 252 35 856 803 756 708 660 86 402 6 6 667 254 83 378 35 943 884 832 780 727 2 445 6 6 730 228 899 59 249 43 975 98 86 803 35 490 6 6 794 2367 99 670 372 43 75 948 884 473 542 6 6 864 2475 94 849 522 268 89 9 49 979 6 534 DimensionalData SIZE J K KL KS L M N P Q S SD SE T V 222 329 268 78 8 x 75 286 35 227 298 00 65 97 645 32 245 35 29 78 8 x 708 34 35 249 329 00 65 203 638 350 270 376 36 78 8 x 708 346 35 275 362 00 65 203 638 38 300 432 359 78 20 x 2 72 384 48 330 402 3 70 203 638 432 330 462 389 2 20 x 2 889 422 48 567 445 43 75 24 806 600 365 497 424 222 20 x 2 45 473 48 770 489 232 75 254 962 740 402 560 475 222 25 x 4 57 505 60 834 540 232 90 254 962 772 445 629 530 229 28 x 6 60 543 73 905 597 232 0 267 953 8 490 672 573 229 28 x 6 60 607 73 948 657 232 0 267 953 873 542 725 627 229 32 x 8 60 676 73 2002 727 232 5 267 953 943 BC4958D NOTES:. Punched outlet flanges are included on all discharges per AC4988, or for 'DBD' AC4925. 2. Optional punched inlet per AS363. 3. 'FR' equals maximum motor frame. www.tcf.com 4

TypicalSpecifications Fans shall be Model BCS, Backward Curved High Pressure Blowers, as manufactured by Twin City Fan & Blower. PERFORMANCE Fans shall be tested in accordance with ANSI/AMCA Standard 2 (air performance) and 300 (sound performance) in an AMCA accredited laboratory. 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. CONSTRUCTION Fan housings and bearing pedestals shall be of heavy-gauge, continuously welded construction. Housings with partially welded construction are not acceptable. Housings shall be suitably braced to prevent vibration or pulsation. Discharge flanges shall be provided for rigidity and duct connection. Discharge flanges are punched as standard. All units are furnished with lifting lugs. IMPELLER BCS backward curved impellers shall be single thickness, designed for maximum efficiency and quiet operation, and shall be continuously welded to the rim and back plate. Partial welding is not acceptable on backward curved blades. All impellers shall be statically and dynamically balanced. SHAFT Shafts shall be AISI 8, 40 or 45 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least.43 times the maximum speed. BEARINS Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block type and selected for a minimum average bearing life (AFBMA L-50) in excess of 200,000 hours at the maximum fan RPM. DRIVE Motor sheaves shall be cast iron, variable pitch on applications 20 HP and smaller, and fixed pitch on 25 HP and larger. Drives and belts shall be located external to the fan casing and rated for 50% of the required motor HP. FINISH AND COATIN The entire fan assembly, excluding the shaft, shall be thoroughly degreased and deburred before application of a rust-preventative primer. After the fan is completely assembled, a finish coat of paint shall be applied to the entire assembly. The fan shaft shall be coated with a petroleum-based rust protectant. Aluminum components shall be unpainted. ACCESSORIES When specified, accessories such as access doors, drains, inlet and outlet flanges, belt guards, shaft and bearing guards, outlet screens, outlet dampers, inlet vanes, spark resistant construction, split housings, high temperature construction, shaft seals, inlet boxes, and shaft coolers shall be provided by Twin City Fan & Blower to maintain one-source responsibility. 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. Each impeller shall be statically and dynamically balanced in accordance with ANSI/AMCA 204-96 Balance Quality and Vibration Levels for Fans to Fan Application Category BV-3, Balance Quality rade 6.3. 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. UARANTEE The manufacturer shall guarantee the workmanship and materials for at least one () year from startup or eighteen (8) months from shipment, whichever occurs first. 4 2 Twin City Fan Catalogue M400

AlternativeCentrifugalFans BC-SW Backward Inclined Fans 3 mm to 2496 mm impeller diameters Airflow to 30 m 3 /sec Static pressure to 5000 Pa Airstream temperatures to 427 C Arrangements, 3, 3F, SI, 4, 7SI, 8, 9, 9F and Belt and direct drive configurations See Catalogue M300 for more information. BAE-SW Airfoil Fans 3 mm to 2496 mm impeller diameters Airflow to 30 m 3 /sec Static pressure to 5000 Pa Airstream temperatures to 427 C Arrangements, 3, 3F, 3SI, 4, 7SI, 8, 9, 9F and Belt and direct drive configurations See Catalogue M370 for more information. BCSF Backward Curved High Pressure Composite Fans 49 mm to 524 mm impeller diameters Airflow to 70 m 3 /sec Static pressure to 8450 Pa Airstream temperature to 93 C Arrangements, 8, 9, 9F and Belt and direct drive configurations www.tcf.com 43