Twin City Fan & Blower

Twin City Fan & Blower BULLETIN 405 April 2009 UPBLAST ROOF, WALL, & KITCHEN EXHAUSTERS TYPE DCRU / DCRUR / DCRW / DCRWR TYPE BCRU / BCRUR / BCRW / BCRWR TYPE BCRUSH (Smoke & Heat)

Upblast Roof, Wall, & Kitchen Exhausters Twin City Fan & Blower s all new line of quiet, efficient, and economical spun aluminum centrifugal power roof and wall exhausters are designed to offer value and long-lasting service in a wide variety of commercial and industrial ventilating applications. Models DCRU, DCRUR, DCRW, DCRWR, BCRU, BCRUR, BCRW, BCRWR, and BCRUSH direct and belt driven ventilators have been designed by the Twin City Fan & Blower Engineering/R&D team, to provide world-class performance, quality, and efficiency to meet the demands of today s ventilating requirements. These new fans cover a wide range of performances, up to 30,000 CFM and over 3" static pressure, in roof, wall, kitchen, and smoke and heat exhaust configurations. Direct Drive Models DCRU and DCRUR Upblast Roof/Kitchen Exhausters Product/Dimensional Data...Page 4 Accessories...Page 9 Performance Data...Page 2 Belt Driven Models BCRU and BCRUR Upblast Roof/Kitchen Exhausters Product/Dimensional Data...Page 6 Accessories...Page 9 Performance Data... Page 3-2 DCRW and DCRWR Wall/Kitchen Exhausters Product/Dimensional Data...Page 5 Accessories...Page 9 Performance Data...Page 2 BCRW and BCRWR Wall/Kitchen Exhausters Product/Dimensional Data...Page 7 Accessories...Page 9 Performance Data... Page 3-9 BCRUSH Smoke & Heat Roof Exhauster Product/Dimensional Data...Page 8 Accessories....Page 9 Performance Data... Page 3-2 DCRU, DCRUR, DCRW, DCRWR, BCRU, BCRUR, BCRW, BCRWR, and BCRUSH models are CULUS 705 listed, for electrical, File No. E58680. DCRUR, DCRWR, BCRUR, and BCRWR models are CULUS 762 listed, for the exhaust of greaseladen air, File No. MH-25478. Model BCRUSH is UL listed for Smoke Control Systems, File No. MH-2933, 500 F for 4 hours and 000 F for 5 minutes. Twin City Fan & Blower certifies that the DCRU, DCRUR, DCRW, DCRWR, BCRU, BCRUR, BCRW, BCRWR, and BCRUSH Series shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 2 and AMCA Publication 3 and comply with the requirements of the AMCA Certified Ratings Program. 2009 Twin City Fan Companies, Ltd. All rights reserved throughout the world. Bulletin 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. 2 Twin City Bulletin 405

Construction Features Wheel Quiet and efficient non-overloading, heavy-gauge wheels with backwardly curved blades are precisely matched to a deep spun venturi. All wheels are statically and dynamically balanced to ensure smooth and quiet operation. Fan Shroud Heavy-gauge spun aluminum with rolled bead edge provides rigidity. Model BCRUSH features a lightweight steel housing for added rigidity when exposed to high temperatures. Motor Housing Constructed from heavy-gauge aluminum for durability and appearance. Model BCRUSH features a heavyduty steel housing for added rigidity when exposed to high temperatures. Motor Cover Provides complete protection for the motor and drive assembly, while allowing quick access to these components without the need for tools. Curb Cap One-piece curb cap/inlet venturi assembly provides protection from weather. Pre-punched mounting holes provide easy and accurate attachment to the roof curb. Shaft Precision ground and polished with a first critical speed of at least 25% of the fan s maximum operating speed. Bearings Heavy-duty re-greaseable pillow block ball bearings are specifically designed for air handling applications to provide an average life (L-50) of 500,000 hours or more at maximum cataloged operating speeds. Conduit Tubing A conduit tube is furnished for running electrical wiring through the outer shroud and into the motor compartment. Conduit tubes are constructed of Electrical Metallic Tubing (EMT). Motor Cooling Tubes Provides cooling by drawing outside air into the motor and drive compartment. Model BCRUSH is provided with 3 cooling tubes on the size 0 through 240, and 4 cooling tubes on the size 300 and 360. Vibration Isolation Wheel, motor, and drive assembly are completely isolated from the fan supports by rubber isolators to reduce transmission of noise and vibration (all models except BCRUSH). Internal Lifting Lugs Provide safe and easy rigging of the fans. Motors ODP, TEFC, and explosion proof, single and three phase motors are carefully matched to the fan load. Drive Adjustable pitch V-belt drives with cast iron sheaves and heat resistant belts are selected at 50% of the driven motor horsepower. Drives on model BCRUSH are dual groove and are selected at 200% of the motor. Alignment Bearing mounting plate features self-aligning tabs for exact alignment of bearings. Balancing Entire fan assembly is balanced and tested at the factory before shipping. Insulation Motor compartment and wireway of the model BCRUSH is insulated with ceramic insulation rated to 2000 F. Galvanized Birdscreen Protects the wheel, inlet, and internal components from entry of birds. Optional on models BCRUR and DCRUR. Disconnect Switch Provided as standard on all units. DCRU, DCRW, BCRU, and BCRW fans are provided with a NEMA- type disconnect switch in the motor compartment when ODP or TEFC motors are used. DCRUR, DCRWR, BCRUR, BCRWR, and BCRUSH fans are provided with a NEMA-3R rain-tight disconnect switch, externally mounted when ODP or TEFC motors are used. When explosion proof motors are specified, a NEMA-7/9 disconnect switch will be shipped loose for field mounting and wiring on all models. Nameplate Permanently attached nameplate displays serial number and unit information for future identification. AMCA Licensed Licensed to bear the AMCA certified ratings seal for sound and air performance, which guarantees accurate performance. UL Listed UL listing for power ventilators assures acceptance in most commercial applications. UL 705 (Electrical) All models. UL 762 (Grease-Laden Air) DCRUR/DCRWR, and BCRUR/BCRWR UL Smoke Control Systems BCRUSH Twin City Bulletin 405 3

DCRU/DCRUR Upblast Roof Exhausters, Direct Drive Twin City Fan s DCRU and DCRUR direct drive, upblast roof mounted centrifugal exhausters are available in eight sizes from size 070 to 80. Capacities range from 225 to 3,865 CFM with static pressures to.75 inches. All sizes are speed controllable with ODP 5V motors. DCRU General Exhaust Model DCRU is designed for roof mounted exhaust of clean air in applications where it is desirable to move the exhausted air up and away from the building, and where re-entry into the building supply air is possible. Model DCRU is culus 705 listed for electrical. DCRUR Kitchen Exhaust Model DCRUR is similar to the DCRU, but is specifically designed for exhausting grease-laden air from kitchens, restaurants, cooking and dishwasher hoods. Model DCRUR is culus 762 listed for the exhaust of grease-laden air. Both the DCRU and DCRUR are licensed to bear the AMCA certified ratings seal for sound and air performance. Model DCRUR C A DIA. E SQUARE CURB SIZE ROOF OPENING (DAMPER SIZE + 0.50 INCHES) * Damper not available on DCRUR. B 2.00 CURB DAMPER Dimensional Data and Weights MODEL AVG. UNIT A B C E DCRU DCRUR WT. (LB.) 07-073B 07-073B 22.00 24.44 8.00 7.00 00 08-083B 08-083B 22.00 24.44 8.00 7.00 00 09-093B 09-093B 22.00 26.3 8.00 20.00 20 0B 0B 30.00 28.3 28.00 24.00 35 20B 20B 30.00 27.9 28.00 24.00 35 40B 40B 30.00 27.68 28.00 24.00 45 60B 60B 30.00 29.8 28.00 24.00 80 80B 80B 36.00 29.7 30.00 30.00 80 Dampers and Roof Curbs MODEL DAMPER STANDARD SELF FLASH ROOF DCRU DCRUR SIZE CURB SIZE CURB SIZE OPENING 07-073B 07-073B 0 x 0 5 2 x 5 2 6 2 x 6 2 0 2 x 0 2 08-083B 08-083B 0 x 0 5 2 x 5 2 6 2 x 6 2 0 2 x 0 2 09-093B 09-093B 4 x 4 8 2 x 8 2 9 2 x 9 2 4 2 x 4 2 0B 0B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 20B 20B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 40B 40B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 60B 60B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 80B 80B 24 x 24 28 2 x 28 2 29 2 x 29 2 24 2 x 24 2 D-4407A Notes: D-4408A. All dimensions are in inches unless otherwise noted. 2. Dimensions are not to be used for construction. 3. Damper sizes are nominal. 4. DCRUR (Kitchen Exhaust) provided with self flashing, vented, 2" high curb. 4 Twin City Bulletin 405

DCRW/DCRWR Wall Exhausters, Direct Drive Twin City Fan s DCRW and DCRWR direct drive, wall mounted centrifugal exhausters are available in eight sizes from size 070 to 80. Capacities range from 225 to 3,865 CFM and static pressures to.75 inches. All sizes are speed controllable with ODP 5V motors. DCRW General Exhaust Model DCRW is designed for general exhaust of clean air in a wall-mounted, horizontal configuration. Model DCRW is culus 705 listed for electrical. DCRWR Kitchen Exhaust Model DCRWR is similar to the DCRW, but is specifically designed for exhausting grease-laden air from kitchens, restaurants, cooking and dishwasher hoods where upblast exhaust is not feasible. Model DCRWR is culus 762 listed for the exhaust of grease-laden air. Both the DCRW and DCRWR are licensed to bear the AMCA certified ratings seal for sound and air performance. Other DCRW/DCRWR applications include fume hood, paint booth, carbon monoxide exhaust. DCRW and DCRWR fans are supplied with a heavy-duty 4" wall-mounting bracket. A 0" wall-mounting bracket is supplied when a gravity or motorized damper is utilized. Model DCRW MOUNTING BRACKET C 5/6" ANCHOR STUD (8) WALL OPENING H 4.00 STD & 0.00 W/DAMPER E SQUARE A DIA. D SQUARE WALL F 6.78 6.78 * Damper not available on DCRWR. Dimensional Data and Weights 2.00 Notes:. All dimensions are in inches unless otherwise noted. 2. Dimensions are not to be used for construction. 3. Damper sizes are nominal. B MOUNTING BRACKET HOLE MOUNTING PATTERN MODEL AVG. UNIT DAMPER WALL MTG. WALL A B C D E F DCRW DCRWR WT. (LB.) SIZE BRACKET OPENING (H) 07-073B 07-073B 22.00 24.44 8.00 5.00 7.00 6.78 00 0 x 0 6 3 4 x 6 3 4 0 2 x 0 2 08-083B 08-083B 22.00 24.44 8.00 5.00 7.00 6.78 00 0 x 0 6 3 4 x 6 3 4 0 2 x 0 2 09-093B 09-093B 22.00 26.3 8.00 8.00 20.00 6.78 20 4 x 4 9 3 4 x 9 3 4 4 2 x 4 2 0B 0B 30.00 28.3 28.00 2.00 24.00 6.78 35 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 20B 20B 30.00 27.9 28.00 2.00 24.00 6.78 35 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 40B 40B 30.00 27.68 28.00 2.00 24.00 6.78 45 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 60B 60B 30.00 29.8 28.00 2.00 24.00 6.78 80 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 80B 80B 36.00 29.7 30.00 8.00 30.00 6.78 80 24 x 24 29 3 4 x 29 3 4 24 2 x 24 2 D-4409D D-440B Twin City Bulletin 405 5

BCRU/BCRUR Upblast Roof Exhausters, Belt Driven Twin City Fan s BCRU and BCRUR belt driven, upblast roof mounted centrifugal exhausters are available in twenty sizes from size 0 to 480, including seven high-pressure models. Capacities range from 500 to 29,000 CFM with static pressures to 3.25 inches. BCRU General Exhaust Model BCRU is designed for roof mounted exhaust of clean air in applications where it is desirable to move the exhausted air up and away from the building, and where re-entry into the building supply air is possible. Model BCRU is culus 705 listed for electrical. BCRUR Kitchen Exhaust Model BCRUR is similar to the BCRU, but is specifically designed for exhausting grease-laden air from kitchens, restaurants, cooking and dishwasher hoods. Model BCRUR is culus 762 listed for the exhaust of grease-laden air. Both the BCRU and BCRUR are licensed to bear the AMCA certified ratings seal for sound and air performance. C A DIA. E SQUARE CURB SIZE ROOF OPENING (DAMPER SIZE + 0.50 INCHES) * Damper not available on BCRUR. B 2.00 CURB DAMPER Model BCRU Dimensional Data and Weights MODEL BCRU BCRUR Dampers and Roof Curbs A B C E AVG. UNIT WT. (LBS.) 0B 0B 30.00 28.56 28.00 24.00 35 20B 20B 30.00 27.9 28.00 24.00 35 40B 40B 30.00 27.68 28.00 24.00 45 40B 40B 30.00 28.58 28.00 24.00 35 60B 60B 30.00 29.8 28.00 24.00 80 60B 60B 30.00 27.68 28.00 24.00 35 60BMP 60BMP 30.00 28.44 28.00 24.00 80 80B 80B 36.00 32.3 30.00 30.00 80 80BMP 80BMP 36.00 29.9 30.00 30.00 80 80B 80B 36.00 3.00 28.25 30.00 80 20B 20B 45.00 35.6 28.25 34.00 245 20B 20B 45.00 32.94 28.25 34.00 245 240B 240B 45.00 37.56 28.25 34.00 245 240B 240B 45.00 34.3 28.25 34.00 245 300B 300B 54.00 38.25 3.00 40.00 365 300B 300B 54.00 34.88 3.00 40.00 365 360B 360B 63.00 43.88 34.00 46.00 375 360B 360 63.00 39.68 34.00 46.00 375 420B 69.00 46.75 36.00 52.00 385 480B 75.00 49.3 39.00 58.00 490 MODEL DAMPER STANDARD SELF FLASH ROOF BCRU BCRUR SIZE CURB SIZE CURB SIZE OPENING 0B 0B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 20B 20B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 40B 40B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 60B 60B 8 x 8 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 80B 80B 24 x 24 28 2 x 28 2 29 2 x 29 2 24 2 x 24 2 20B 20B 28 x 28 32 2 x 32 2 33 2 x 33 2 28 2 x 28 2 240B 240B 28 x 28 32 2 x 32 2 33 2 x 33 2 28 2 x 28 2 300B 300B 34 x 34 38 2 x 38 2 39 2 x 39 2 34 2 x 34 2 360B 360B 40 x 40 44 2 x 44 2 45 2 x 45 2 40 2 x 40 2 420B 46 x 46 50 2 x 50 2 5 2 x 5 2 46 2 x 46 2 480B 50 x 50 56 2 x 56 2 57 2 x 57 2 50 2 x 50 2 D-440H Notes: D-4402H. All dimensions are in inches unless otherwise noted. 2. Dimensions are not to be used for construction. 3. Damper sizes are nominal. 4. BCRUR (Kitchen Exhaust) provided with self flashing, vented, 2" high curb. 6 Twin City Bulletin 405

BCRW/BCRWR Wall Exhausters, Belt Driven Twin City Fan s BCRW and BCRWR belt driven, wall mounted centrifugal exhausters are available in sixteen sizes from size 0 to 300, including six highpressure models. Capacities range from 500 to 2,000 CFM and static pressures to 3.25 inches. BCRW General Exhaust Model BCRW is designed for general exhaust of clean air in a wall-mounted, horizontal configuration. Model BCRW is culus 705 listed for electrical. BCRWR Kitchen Exhaust Model BCRWR is similar to the BCRW, but is specifically designed for exhausting grease-laden air from kitchens, restaurants, cooking and dishwasher hoods where upblast exhaust is not feasible. Model BCRWR is culus 762 listed for the exhaust of grease-laden air. Both the BCRW and BCRWR are licensed to bear the AMCA certified ratings seal for sound and air performance. Other BCRW/BCRWR applications include fume hood, paint booth, carbon monoxide exhaust. BCRW and BCRWR fans are supplied with a heavy-duty 4" wall-mounting bracket. A 0" wall-mounting bracket is supplied when a gravity or motorized damper is utilized. MOUNTING BRACKET C Model BCRW 5/6" ANCHOR STUD (8) WALL OPENING H 4.00 STD & 0.00 W/DAMPER E SQUARE A DIA. D SQUARE WALL F 6.8 6.8 * Damper not available on BCRWR. 2.00 B MOUNTING BRACKET HOLE MOUNTING PATTERN Dimensional Data and Weights MODEL AVG. UNIT DAMPER WALL MTG. WALL A B C D E F BCRW BCRWR WT. (LB.) SIZE BRACKET OPENING (H) 0B 0B 30.00 26.00 28.00 25.56 24.00 2.00 35 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 20B 20B 30.00 27.25 28.00 25.56 24.00 2.00 35 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 40B 40B 30.00 27.75 28.00 25.56 24.00 2.00 45 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 60B 60B 30.00 30.00 28.00 25.56 24.00 2.00 80 7 x 7 23 3 4 x 23 3 4 7 2 x 7 2 80B 80B 36.00 32.50 30.00 3.56 30.00 8.00 80 24 x 24 29 3 4 x 29 3 4 24 2 x 24 2 20B 20B 45.00 35.75 28.25 35.56 34.00 22.00 245 27 x 27 33 3 4 x 33 3 4 27 2 x 27 2 240B 240B 45.00 37.75 28.25 35.56 34.00 22.00 245 27 x 27 33 3 4 x 33 3 4 27 2 x 27 2 300B 300B 54.00 38.25 3.00 4.56 40.00 28.00 365 33 x 33 39 3 4 x 39 3 4 33 2 x 33 2 Notes:. All dimensions are in inches unless otherwise noted. 2. Dimensions are not to be used for construction. 3. Damper sizes are nominal. D-4403L D-4406G Twin City Bulletin 405 7

BCRUSH Smoke & Heat Roof Exhausters Twin City Fan s BCRUSH smoke & heat roof exhausters are available in twenty sizes from size 0 to 480, including seven high-pressure models. Capacities range from 500 to 29,000 CFM with static pressures to 3.25 inches. Model BCRUSH is specifically designed for smoke control applications where temperatures can reach 000 F. The lightweight construction makes the BCRUSH ideal for jobs where roof loads are a concern. Model BCRUSH is UL listed for smoke control systems, 500 F for 4 hours and 000 F for 5 minutes, and is licensed to bear the AMCA certified ratings seal for sound and air performance. Unique features of the BCRUSH smoke & heat roof exhauster include: Aluminum Housing Heavy-gauge aluminum housing provides structural rigidity when exposed to high temperatures. Steel Wheel Provides rigidity when exposed to high temperature airstreams. Multiple Cooling Tubes Provide cooling by drawing outside air into the motor and drive compartment. Insulation Insulated motor compartment and wireway are insulated with ceramic insulation rated to 2000 F. Dual Groove Drive Oversized for added assurance. Aluminum Nameplate For future identification. C A DIA. B Dimensional Data and Weights Model BCRUSH MODEL AVG. UNIT A B C E BCRUSH WT. (LB.) 0B 30.00 26.00 28.00 24.00 53 20B 30.00 27.25 28.00 24.00 58 40B 30.00 27.75 28.00 24.00 73 60B 30.00 30.00 28.00 24.00 83 80B 36.00 32.50 30.00 30.00 223 20B 45.00 35.75 28.25 34.00 252 240B 45.00 37.75 28.25 34.00 272 300B 54.00 38.25 3.00 40.00 437 360B 63.00 44.00 34.00 46.00 629 420B 69.00 46.75 36.00 52.00 647 480B 75.00 49.3 39.00 58.00 823 E SQUARE CURB SIZE ROOF OPENING 2.00 CURB Dampers and Roof Curbs MODEL STANDARD SELF FLASH ROOF BCRUSH CURB SIZE CURB SIZE OPENING 0B 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 20B 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 40B 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 60B 22 2 x 22 2 23 2 x 23 2 8 2 x 8 2 80B 28 2 x 28 2 29 2 x 29 2 24 2 x 24 2 20B 32 2 x 32 2 33 2 x 33 2 28 2 x 28 2 240B 32 2 x 32 2 33 2 x 33 2 28 2 x 28 2 300B 38 2 x 38 2 39 2 x 39 2 34 2 x 34 2 360B 44 2 x 44 2 45 2 x 45 2 40 2 x 40 2 420B 50 2 x 50 2 5 2 x 5 2 46 2 x 46 2 480B 56 2 x 56 2 57 2 x 57 2 50 2 x 50 2 Notes:. All dimensions are in inches unless otherwise noted. 2. Dimensions are not to be used for construction. D-440-A 8 Twin City Bulletin 405

Accessories Backdraft Damper Backdraft dampers, with automatic or motorized operation, feature a felt seal on the edge of the damper blades for quiet operation. Damper frames are constructed of 20-gauge galvanized steel and blades are constructed of 26-gauge aluminum. Motorized dampers are recommended for low CFM applications to assure unrestricted airflow. Motorized dampers are available with 5, 208, 230, 460 or 575 volt service; 575 volt service requires a stepdown transformer. When a motorized damper option is selected a 2" (or greater) high roof curb is required. Curb Hinge The curb hinge arrangement provides easy access to the exhaust fan, backdraft damper and duct for servicing and cleaning. The curb hinge is of the piano type, running the entire length of the fan's curb base. The curb hinge option is factory installed and is designed for use with a standard canted curb only. This option cannot be used with standard selfflashing curbs, but will work with self-flashing vented restaurant curbs. Available on all DCRU, DCRUR, BCRU, BCRUR, and BCRUSH models. Security Hasp A security hasp is available in conjunction with the curb hinge arrangement to prevent removal of the unit from the unit curb cap and prevent entrance into the building through the roof s ductwork. Retaining Chain A retaining chain is available in conjunction with the curb hinge arrangement to stabilize the unit and to prevent damage from occurring to the unit while servicing and cleaning. Prefabricated Roof Curbs Prefabricated roof curbs are available in heavy duty galvanized steel or aluminum construction, in heights of 8", 2", or 8". The standard curb (canted) is provided with a factory installed wood nailer, while the optional self flashing design is provided with a 3 /6" polystyrene gasket. Both the standard curb and the self flashing design are provided with.5" of insulation as standard and feature continuously welded seams for added rigidity and moisture protection. Prefabricated curbs are also available in raised cant, pitched and peak models. Refer to Bulletin 490 for complete details on roof curb options. Minimum 2" high curbs are recommended for use with motorized damper. BCRUR (Kitchen Exhaust) roof curbs are self flashing, 2" high, galvanized steel with ventilation slots and /4" polystyrene gasket when combined with our roof curbs. All BCRUR roof units provide a minimum 40" discharge height in accordance with NFPA-96 code requirements. Grease Box Removable, for disposal of collected grease. Available for DCRUR & BCRUR fans only. Aluminum Birdscreen Protects from entry of birds. Available for all models except BCRUSH. Aluminum Insect Screen Provides protection from entry of insects into wheel, inlet and interior of building. Available for DCRU, DCRW, BCRU, and BCRW fans only. Variable Speed Control Variable speed control is an optional accessory on all DCRU, DCRUR, DCRW, and DCRWR models with 5 volt, open type motors, to allow the adjustment of airflow for system balancing. Variable speed controllers are solid-state (Tri-ac) design. Speed control features include RFI filter, minimum speed trim adjustment capability, and built-in on/off line switch. The speed controller is designed to start the motor on high speed for better startup characteristics. Variable speed controls have the option of being shipped separately, factory installed, or field installed on the unit at a later date. Motor must be ODP 5V P5C or shaded pole type. NEMA-4 Disconnect Switches A NEMA-4, water and dust tight disconnect is available shipped loose for field mounting and wiring. 2-Speed Switch Two speed switch is available for 2 speed/2 winding motors to control the fan speed (high speed, low speed, off). Available on single phase, and below Firestat The firestat option is intended to shut down the unit in case of a fire in the building. If the firestat sensing element is exposed to an air temperature over its setpoint, it will open, de-energizing the motor of the unit. The standard firestat is set to open at 40ºF and must be manually reset. The firestat cut-out point is field adjustable from 00ºF to 70ºF. Firestats are available for 5, 208, 230 and 277 volt, -phase units, either factory or field installed. Special Coatings Powered roof exhausters often require special coatings for protective and decorative purposes. Available coatings include air-dried enamel, air-dried epoxy, and Heresite (air-dried phenolic). Contact your Twin City Fan & Blower sales representative for more information on available coatings and colors. Twin City Bulletin 405 9

Exploded Parts View DCRU and DCRUR BCRU, BCRUR and BCRUSH TOP COVER CAP MOTOR HOUSING BAND RIGID CONDUIT (DCRU) " RIGID CONDUIT (DCRUR) GROMMET (DCRUR) 2" INSULATED CONDUIT (DCRUR) BREATHER TUBE 4" TOP COVER CAP MOTOR HOUSING BAND RIGID CONDUIT (BCRU) " RIGID CONDUIT (BCRUR) GROMMET (BCRUR) 2" INSULATED CONDUIT (BCRUR and BCRUSH) BREATHER TUBE 4" MOTOR SUPPORT ASSEMBLY 2 GROOVE DRIVES MIN. (BCRUSH) HIGH TEMP CAULK, INSIDE MULTIPLE BREATHER TUBES (BCRUSH) MOTOR & DRIVES SUPPORT ASSEMBLY NEMA- DISCONNECT SWITCH (DCRU) INSULATION (BCRUSH) NEMA- DISCONNECT SWITCH (BCRU) WIRE BIRDSCREEN (OPTIONAL ON DCRUR) WIRE BIRDSCREEN (OPTIONAL ON BCRUR) WHEEL WHEEL OUTER SHROUD OUTER SHROUD NEMA-3R DISCONNECT SWITCH (DCRUR) SHAFT COLLAR (BCRUSH) NEMA-3R DISCONNECT SWITCH (BCRUR and BCRUSH) BREATHER TUBE COVER BREATHER TUBE COVER GREASE SPOUT CURB CAP GREASE SPOUT CURB CAP GREASE BOX (OPTIONAL ON DCRUR) GREASE BOX (OPTIONAL ON BCRUR) 0 Twin City Bulletin 405

Exploded Parts View DCRW and DCRWR NEMA-3R DISCONNECT SWITCH (DCRWR) OUTER SHROUD RIGID CONDUIT MOTOR HOUSING BAND TOP COVER CAP WALL ADAPTER CURB BASE BREATHER TUBE COVER WHEEL WIRE BIRDSCREEN NEMA- DISCONNECT SWITCH (DCRW) MOTOR SUPPORT ASSEMBLY BREATHER TUBE 4" BCRW and BCRWR NEMA-3R DISCONNECT SWITCH (BCRWR) OUTER SHROUD NEMA- DISCONNECT SWITCH (BCRW) RIGID CONDUIT MOTOR HOUSING BAND TOP COVER CAP WALL ADAPTER CURB BASE BREATHER TUBE COVER WHEEL MOTOR & DRIVES SUPPORT ASSEMBLY WIRE BIRDSCREEN BREATHER TUBE 4" Twin City Bulletin 405

Performance Data Direct Drive DCRU / DCRUR / DCRW / DCRWR MAX. MOTOR 0 0.25 0.25 0.375 0.50 0.625 0.75.00.25.50.75 SIZE INPUT CFM CFM CFM CFM CFM CFM CFM CFM CFM CFM CFM WATTS B Sone B Sone B Sone B Sone B Sone B Sone B Sone B Sone B Sone B Sone B Sone 07B /8 860 67 224 9 --- 4.2 --- 4. 072B /8 60 72 292 2 --- 4.6 --- 4.4 073B /8 650 78 439 388 337 275 --- 6. --- 5.9 --- 4.9 --- 5.2 08B /8 860 82 259 80 --- 2.6 --- 3.2 082B /8 60 85 496 426 334 --- 6.6 --- 6.2 --- 6.2 083B /3 750 46 780 732 68 626 56 492 48 --- 9.2 --- 9.2 --- 9.0 --- 8.4 --- 8.4 --- 8.9 --- 8.6 09B /8 860 79 656 463 --- 7.0 --- 6.9 092B /8 60 8 836 694 534 307 --- 7.5 --- 6.8 --- 7. --- 6.5 093B /3 750 68 307 209 05 998 885 748 597 --- 0.0 --- 0.0 --- 9.4 --- 8.9 --- 9.3 --- 9.4 --- 9. /8 860 --- 805 698 566 0.04 4.9 0.05 4.3 0.05 4.5 0B /8 60 --- 086 008 926 833 720 537 0.0 8.2 0. 8.0 0. 7.0 0. 7.2 0. 7.0 0.0 6. 750 --- 638 588 536 482 427 37 3 73 005 0.35 5.7 0.36 5.7 0.37 5.7 0.37 4.2 0.38 3.5 0.38 2.9 0.39 2.9 0.39 4.0 0.39 2. /8 860 --- 09 982 862 69 0.06 6.3 0.07 5.6 0.07 5.5 0.07 4.9 20B /4 60 --- 495 399 309 225 22 997 0.6 0.0 0.7 9.9 0.7 8.6 0.8 8.5 0.8 9.2 0.8 8.8 750 --- 2256 290 227 2065 2006 950 895 773 620 448 0.54 8.5 0.55 8.5 0.57 8.5 0.58 7.5 0.59 6.4 0.60 6. 0.6 5.5 0.62 6.0 0.63 7. 0.62 6.0 40B /8 860 --- 676 52 358 55 0. 8.6 0.2 7.8 0.3 7.3 0.3 7.7 60 --- 226 238 209 907 785 634 465 0.27 3.6 0.29 3.6 0.30 2.0 0.3.2 0.32.8 0.32 2.2 0.32. 60B /4 860 --- 267 94 769 597 380 0.8.3 0.9 9.4 0.20 8.7 0.20 9.5 0.20 8.6 60 --- 2923 2700 256 2453 2344 226 2075 73 0.43 7.2 0.46 7.0 0.47 4.3 0.48 3.4 0.49 3.4 0.49 4.3 0.49 4.5 0.49.2 80B 860 --- 2866 2685 2504 232 209 839 550 0.29.9 0.3.9 0.32 0.6 0.33 9.6 0.34 0. 0.34 9.9 0.33 8.8 60 --- 3865 373 3597 3462 3330 396 3047 2685 2296 0.7 7.6 0.73 7.6 0.75 8.5 0.77 7.5 0.79 6.4 0.8 5.8 0.82 5.8 0.84 6.8 0.83 5.6 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. 6. All sizes are available with variable speed control. 2 Twin City Bulletin 405

Performance Data Belt Driven 0B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 56 625 750 925 025 /4 25 250 330 375 55 585 /3 670 795 920 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.25.50 585 423 0.02 2.7 0.02 2.4 702 576 384 0.03 3.9 0.03 3. 0.03 2.8 866 767 652 485 0.05 5.6 0.06 5. 0.06 5. 0.06 4.2 959 87 774 653 433 0.07 6.7 0.08 6.3 0.08 5.6 0.08 5.9 0.07 5.0 053 973 887 789 666 0.09 7.7 0.0 7.6 0.0 6.6 0.0 7.0 0.0 6.4 70 098 023 942 846 732 0.3 9.3 0.3 9.2 0.4 8.0 0.4 7.6 0.4 8.3 0.4 7.4 245 78 07 033 950 853 732 0.5 0.3 0.6 0.3 0.7 9.2 0.7 8.5 0.7 9.0 0.7 9.0 0.7 7.7 287 222 54 084 006 95 8 643 0.7 0.6 0.8 0.6 0.8 9.8 0.9 9.0 0.9 9. 0.9 9.5 0.9 8.7 0.7 8. 48 360 299 236 70 097 05 923 802 0.23 2.6 0.23 2.6 0.24.8 0.25 0.8 0.25 0.3 0.25 0.7 0.25.2 0.25 0.6 0.24 9.3 484 428 370 30 248 82 08 025 932 800 0.26 3.3 0.27 3.3 0.28 3. 0.28.8 0.28.2 0.29.2 0.29 2.0 0.29 2.0 0.29 0.6 0.27 9.9 563 50 456 399 34 28 24 4 06 970 84 0.30 4.7 0.3 4.7 0.32 4.2 0.33 3.3 0.33 2.5 0.33 2.0 0.34 2.7 0.34 2.9 0.34 2.8 0.34.3 0.32 0.9 680 63 58 529 475 42 363 30 233 59 078 825 0.38 6.3 0.39 6.3 0.40 6.3 0.40 5. 0.4 4.2 0.4 3.6 0.42 3.6 0.42 4.2 0.42 4.4 0.42 4.3 0.42 3.3 0.38 2.0 797 75 704 656 607 557 505 45 392 329 26 06 0.46 7.8 0.47 7.8 0.48 7.8 0.49 7.5 0.50 6.5 0.50 5.6 0.5 5. 0.5 5. 0.5 5.3 0.5 6. 0.52 6. 0.5 4.0 20B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 56 650 /4 975 /3 305 370 435 545 655 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.25.50 838 677 0.03 3.5 0.03 3.0 257 43 042 98 753 0.09 7.6 0.0 7. 0. 6.5 0. 7.0 0.0 5.6 682 596 53 438 362 268 59 035 0.22.6 0.23.6 0.24 0.8 0.25 0.2 0.26 0. 0.26 0.8 0.26 0.6 0.25 9.5 766 683 604 53 460 379 282 74 040 0.26 2.5 0.27 2.5 0.28.8 0.29.0 0.29 0.6 0.30.2 0.3.8 0.30.3 0.29 9.6 850 77 695 623 556 485 399 300 95 047 0.30 3.6 0.3 3.6 0.32 2.8 0.33 2.0 0.33.4 0.34.5 0.35 2.2 0.35 2.5 0.34.7 0.33 0.3 992 98 847 779 75 653 583 502 4 34 200 0.37 4.9 0.38 4.9 0.39 4.6 0.40 3.8 0.4 3. 0.42 2.9 0.43 3.0 0.43 3.8 0.43 4.0 0.43 3.6 0.42 2. 233 2064 998 933 872 84 754 688 62 527 438 202 0.46 6.6 0.47 6.6 0.48 6.6 0.49 5.5 0.50 4.6 0.5 4.4 0.52 4.3 0.52 4.4 0.53 5.2 0.53 5.4 0.53 5.3 0.5 3. 40B BCRU / BCRUR / BCRUSH / BCRW / BCRWR /4 /3 850 080 40 200 305 370 475 565 650 720 Max. Motor Frame = 43T 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.25.50 657 49 334 26 0. 8.4 0.2 7.7 0.3 7.2 0.3 7.3 205 973 847 726 578 402 0.22 2. 0.23 2.0 0.25 0.4 0.25 0.2 0.26 0.9 0.26 0.2 2222 2097 976 862 735 577 0.26 2.9 0.27 2.9 0.29.7 0.30.0 0.30.6 0.3.8 2339 2220 204 995 882 745 586 0.30 4.2 0.32 4.2 0.33 2.8 0.34 2.0 0.35 2.0 0.36 2.7 0.36 2. 2543 2434 2327 2224 225 205 885 739 0.39 6.8 0.4 6.8 0.42 5.5 0.43 3.9 0.45 3.5 0.45 3.8 0.46 4.6 0.46 3.9 2670 2566 2464 2364 2269 27 2058 926 785 0.45 8.5 0.47 8.5 0.48 7.5 0.50 5.6 0.5 4.6 0.52 4.6 0.53 5.2 0.53 5.2 0.53 4.5 2875 2778 2682 2589 2499 24 238 220 2089 958 0.56 2 0.58 2 0.60 2 0.6 8.0 0.63 7. 0.64 6. 0.65 6.6 0.66 6.7 0.66 7.5 0.66 6.6 3050 2959 2869 2780 2693 26 2527 2436 2332 227 2094 0.67 23 0.69 23 0.7 23 0.73 2 0.74 9.0 0.76 7.8 0.77 7.6 0.78 8.0 0.79 8.7 0.79 8.8 0.79 8. 326 329 3043 2959 2876 2796 278 2637 2547 2447 2338 202 0.79 25 0.8 25 0.83 25 0.85 23 0.86 2 0.88 9.8 0.89 9. 0.9 9. 0.92 9.6 0.92 20 0.93 20 0.92 8.4 3352 3269 387 305 3025 2947 2872 2796 276 2627 2529 230 0.89 27 0.92 27 0.94 27 0.95 25 0.97 23 0.99 2.0 2.02 20.03 20.04 2.05 22.05 2 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. Twin City Bulletin 405 3

Performance Data Belt Driven 40B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 56 /4 /3 450 525 600 680 80 940 2075 2205 0.50 0.625 0.75 0.875.00.25.25.50.75 2.00 2.25 2.50 095 05 924 86 0.22 9.6 0.22 0.4 0.22 0.2 0.22 8.8 8 09 028 938 823 0.250.5 0.26.0 0.26.3 0.26 0.7 0.25 9.3 265 99 27 046 956 836 0.29.3 0.29.3 0.30 2.0 0.30 2. 0.30.2 0.29 0.3 352 292 227 55 075 987 866 0.34 2.6 0.34 2. 0.34 2.7 0.34 2.9 0.35 2.8 0.34.8 0.33 0.9 49 437 38 39 253 80 02 870 0.42 4.3 0.42 4.0 0.43 3.6 0.43 4.3 0.43 4.5 0.43 4.5 0.43 3.7 0.40 2.3 628 578 527 474 47 355 288 39 895 0.5 6.9 0.52 5.9 0.52 5. 0.52 5. 0.53 5.4 0.53 6. 0.53 6.2 0.53 4.7 0.48 3.4 767 722 675 627 577 524 467 34 97 960 0.62 8.6 0.63 7.8 0.63 7. 0.64 6.8 0.64 6.6 0.65 7.0 0.65 7.7 0.65 7.7 0.64 5.6 0.59 4.8 900 857 84 770 725 677 627 59 397 256 03 0.74 2 0.75 9.8 0.76 8.9 0.76 8.6 0.77 7.9 0.77 7.9 0.77 8. 0.78 9. 0.78 9.0 0.77 6.6 0.7 6.5 60B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 43T /4 /3 780 865 900 950 000 00 60 250 320 380 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.25.50 2207 989 708 299 0.7 8.6 0.8 8. 0.9 7.4 0.8 7.3 2448 2255 2023 74 29 0.24 0.2 0.25 0.0 0.26 8.7 0.26 9.3 0.24 8.4 2547 2363 245 866 496 0.27. 0.28. 0.29 9.4 0.29 0.0 0.28 9.3 2688 255 235 207 753 324 0.3 2. 0.33 2.0 0.34 0.7 0.34 0.5 0.34 0.9 0.30 9.4 2830 2666 248 2263 984 638 0.36 3.4 0.38 3.4 0.39 2.0 0.40.4 0.40 2. 0.38. 33 2966 2803 2620 2404 237 89 338 0.48 5.5 0.50 5.5 0.52 4.6 0.53 3.5 0.53 3.6 0.53 4.6 0.5 3.3 0.45 2.3 3283 344 2992 2824 2632 240 230 805 0.57 6.9 0.59 6.9 0.60 6. 0.6 5. 0.62 5.0 0.62 5.7 0.6 5.4 0.59 3.6 3538 3409 327 32 2955 2766 254 2286 988 546 0.7 9.3 0.73 9.3 0.75 8.7 0.76 8.2 0.77 7. 0.78 7.2 0.78 8.3 0.77 7.6 0.74 5.9 0.67 5.2 3736 365 3486 3347 395 3028 2835 262 2363 2074 655 0.84 2 0.86 2 0.88 2 0.89 9.8 0.9 9.2 0.92 9.0 0.92 9.3 0.9 9.6 0.90 9.2 0.87 7. 0.79 6.6 3905 3790 3668 3537 3396 3242 307 2872 265 2404 28 0.96 23 0.98 23.00 23.02 22.03 2.04 20.05 20.05 22.04 2.02 20 0.99 8. 60BMP BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 43T /4 /3 825 930 975 020 00 85 265 345 45 490 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.50.75 2079 823 67 483 233 0.6 0.5 0.7 8.7 0.7 8. 0.8 8.9 0.8 6.9 2344 2097 958 82 636 42 0.22 2.5 0.24 0.7 0.25 0.0 0.25 0.0 0.26 0.7 0.26 8.6 2457 225 2077 944 786 595 343 0.26 3.2 0.27.7 0.28 0.7 0.29 0.6 0.29.4 0.30 0.5 0.29 8.4 2570 2333 295 2073 928 760 552 0.29 4.2 0.3 3.0 0.32.5 0.33.0 0.33 2. 0.34.9 0.34 9.8 2772 2543 2404 2293 269 2028 866 669 0.37 6.0 0.39 5. 0.40 3.0 0.4 2.4 0.42 2.6 0.42 3.5 0.42 3.3 0.42.0 2986 2765 2626 2520 244 2292 257 2005 823 0.46 8.0 0.48 7.7 0.50 5.2 0.5 4.2 0.52 4. 0.52 4.4 0.53 5.2 0.53 4.7 0.53 2.7 388 2974 2834 2730 2634 2528 240 228 236 766 0.56 9.7 0.59 9.7 0.60 7.0 0.6 6.0 0.62 5.5 0.63 5.5 0.64 6.5 0.64 6.7 0.64 6.4 0.63 2.8 3389 383 3044 2939 2848 2755 2650 2537 244 222 0.67 22 0.70 22 0.72 9. 0.73 7.8 0.74 7. 0.75 7.0 0.76 7. 0.77 8.0 0.77 8.8 0.78 6.5 3566 3365 3227 32 3032 2947 2854 275 264 239 2073 0.78 24 0.82 24 0.84 2 0.85 9.5 0.86 8.6 0.87 8.5 0.88 8.6 0.89 8.7 0.89 9.8 0.90 9.9 0.89 6.2 3755 3560 3424 337 3229 347 3064 2972 2872 2653 2392 2055 0.9 26 0.95 26 0.97 24 0.99 22.00 20.0 20.02 9.4.03 9.5.04 20.05 22.05 20.03 7.9 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. 4 Twin City Bulletin 405

Performance Data Belt Driven 60B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 43T /4 /3 950 085 55 95 320 365 500 560 680 75 0.50 0.625 0.75 0.875.00.25.25.50.75 2.00 2.25 2.50 205 0.8 8. 592 47 0.26 0.26 0.2 772 620 450 0.32.6 0.32.9 0.32 0.6 870 73 57 0.35.9 0.35 2.7 0.35 2 258 2052 926 783 630 0.46 3.8 0.47 3.9 0.47 4.7 0.47 4.2 0.47 2.6 2258 260 2045 92 770 0.5 4.3 0.52 4.6 0.52 5.2 0.52 5.2 0.52 4.4 2553 2467 2377 2274 258 203 899 0.66 7.4 0.67 6.7 0.68 6.7 0.69 7.6 0.70 7.8 0.69 7.2 0.69 6 2683 2600 255 2424 239 2203 2079 0.74 8.8 0.75 7.8 0.76 7.6 0.78 7.8 0.78 8.7 0.78 8.7 0.78 7.9 2940 286 2784 2706 262 2525 242 293 0.9 22 0.93 2 0.94 9.8 0.96 9.6 0.97 9.8 0.97 20 0.98 2 0.97 9.5 304 2936 286 2785 2704 265 255 2296 0.96 23 0.98 2.00 2.0 20.03 20.03 2.04 2.04 2 80B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 45T 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.50.75 /4 525 2469 988 25 0.2 5.9 0. 3 5. 0.2 4.7 665 327 2758 2338 736 0.24 9. 0.25 8.5 0.26 8. 0.25 7.9 3292 2942 2558 2030 700 /3 0.28 0. 0.29 9.5 0.30 8.7 0.30 9.3 730 3433 3099 2738 2274 629 0.32 0.8 0.33 0.3 0.34 9.3 0.34 0.0 0.3 8.5 785 3692 3382 3056 2669 249 0.39 2.3 0.4.9 0.42 0.6 0.43 0.9 0.4 0.7 840 395 3662 336 3025 2602 2074 0.48 3.6 0.50 3. 0.52 2. 0.52.7 0.52 2.6 0.49 0.9 900 4233 3965 3685 3389 3039 2590 2065 0.59 5.0 0.6 5.0 0.63 3.5 0.64 3.2 0.64 3.7 0.63 3.7 0.59.6 965 4538 4289 4030 3763 3462 307 2662 246 0.73 7. 0.75 7. 0.77 5.8 0.79 4.9 0.79 4.9 0.79 5.9 0.77 4.7 0.7 3. 00 4750 452 4266 403 3739 3423 3037 2600 995 0.84 8.2 0.86 8.2 0.88 7.2 0.90 6.2 0.9 6. 0.9 7.0 0.90 6.7 0.87 5.4 0.76 4.0 060 4985 4759 4526 4286 4035 375 3425 3024 2600 0.97 20 0.99 20.02 9.0.04 7.9.05 7..05 7.9.04 8.2.03 7.7 0.98 5.6-35 5338 527 490 4688 446 425 3940 3625 3248 238.9 22.2 22.24 2.26 20.28 9.7.29 9.6.29 20.28 20.26 9.5.0 6.7 20 569 5493 529 5084 4874 4655 445 45 3850 333.44 24.47 24.50 24.52 23.54 22.56 2.57 2.56 22.55 23.49 20 2 270 5973 5785 5593 5396 597 4993 4776 4539 4279 3640 2888.66 26.69 26.72 26.75 25.77 24.80 23.8 23.8 23.80 24.77 23.64 9.7 330 6255 6076 5893 5706 556 5324 525 4909 4676 429 347 2543.9 28.94 28.97 28 2.00 27 2.03 26 2.05 25 2.07 25 2.08 25 2.08 25 2.05 26.98 23.7 2 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. Twin City Bulletin 405 5

Performance Data Belt Driven 80BMP BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 45T /4 /3-2 650 790 830 870 930 995 060 30 90 250 340 430 500 575 0 0.25 0.25 0.50 0.75.00.25.50.75 2.00 2.25 2.50 266 926 673 0.3 7.4 0.4 6.9 0.5 6.2 2632 2435 2240 750 0.22 0.4 0.24 0.2 0.25 8.9 0.26 8.8 2766 2578 239 946 0.26.2 0.28.2 0.29 9.7 0.3 9.6 2899 2720 254 239 63 0.30.9 0.32.9 0.33 0.8 0.35 0.3 0.34 9.0 3099 2932 2763 244 952 0.37 3.6 0.38 3.6 0.40 2.3 0.42. 0.43.3 335 359 3002 2688 2279 802 0.45 3.9 0.47 3.9 0.48 4. 0.5 2.3 0.53 3.0 0.5. 3532 3385 3238 2947 2593 279 0.54 5.4 0.56 5.4 0.58 5.7 0.6 3.8 0.64 4.2 0.63 3.6 3765 3628 3490 326 296 2538 223 0.66 7. 0.68 7. 0.70 7.5 0.73 5.6 0.76 5.0 0.78 5.9 0.75 4.0 3965 3835 3703 3443 375 283 2463 0.77 8.4 0.79 8.4 0.8 8.7 0.85 6.8 0.88 6.3 0.90 7.3 0.90 6.8 465 404 396 3667 349 37 2772 2396 0.89 9.7 0.9 9.7 0.94 9.7 0.98 8.9.0 8.2.04 8.3.05 9.0.03 7. 4465 4349 4233 3999 377 352 32 2889 2529.09 22.2 22.4 22.9 2.23 20.26 9.9.29 2.29 2.26 9.0 4765 4656 4547 4329 43 3894 3635 3334 303 2689.33 24.36 24.38 24.43 23.48 22.52 22.55 23.57 24.56 24.53 22 4998 4895 479 4583 4376 47 3945 3672 3383 3087 275.53 26.56 26.59 26.64 25.69 24.74 24.77 24.80 25.8 25.80 25.75 23 5248 549 505 4852 4654 446 4258 4020 3748 3475 386 286.78 28.8 28.84 28.89 27.94 26.99 25 2.03 25 2.07 26 2.0 27 2.0 27 2.07 25 2.02 24 80B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 45T /4 /3-2 875 935 980 030 05 80 265 350 45 485 595 705 790 870 0.50 0.625 0.75 0.875.00.25.50.75 2.00 2.25 2.50 2.75 475 93 0.2 9.3 0.2 8.4 692 484 0.26 0.8 0.26 0.0 848 655 428 0.30.5 0.30.5 0.30 0.2 204 837 649 0.34.9 0.35 2.4 0.35.9 225 2097 928 75 498 0.42 2.6 0.42 3.8 0.43 3.8 0.43 2.9 0.42 2. 2480 2343 294 2034 867 0.5 4.0 0.5 4.2 0.52 5. 0.52 5. 0.53 4.4 273 2608 2477 2337 287 843 0.62 5.7 0.63 5. 0.63 6. 0.64 7.0 0.64 6.8 0.64 4.6 2976 2865 2747 2623 2490 2207 82 0.75 7.4 0.76 7.0 0.76 7. 0.77 7.6 0.78 8.3 0.79 7.5 0.76 5.9 359 3056 2946 2832 27 2447 259 0.85 8.8 0.87 8.3 0.87 7.7 0.88 8.4 0.89 9.3 0.90 9.3 0.90 7.0 3354 3258 356 3050 2939 2699 244 29 0.98 20 0.99 9.4.0 9.0.0 9.0.02 9.6.04 2.05 9.7.03 7.3 3656 3569 3477 3382 3284 3074 2844 2602 2305.2 22.22 22.24 2.25 2.26 2.27 22.29 22.30 2.28 9.0 3953 3873 379 3705 366 3428 3226 3008 278 252.47 24.48 24.50 24.5 23.52 22.54 23.56 24.57 25.58 23.57 20 48 406 4028 3948 3866 3692 3507 3308 3096 2879 26.69 26.7 26.72 25.74 25.75 24.78 24.80 25.8 26.82 25.83 24.82 2 4394 4322 4249 474 4097 3934 3762 3580 3384 380 2968 270.92 27.94 27.96 27.97 26.99 26 2.0 25 2.04 26 2.06 27 2.07 28 2.08 27 2.09 25 2.07 22 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. 6 Twin City Bulletin 405

Performance Data Belt Driven 20B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 45T /4 /3-2 500 550 570 600 650 695 750 795 830 875 950 000 050 00 0 0.25 0.25 0.375 0.50 0.625 0.75.00.25.50.75 2.00 3288 2895 2472 957 0.4 8.5 0.6 6.9 0.9 6.7 0.20 5.4 366 3260 2892 2462 86 0.9 0.0 0.2 8.9 0.24 7.8 0.26 7.3 0.26 6.5 3748 3404 3053 2648 267 0.2 0.7 0.24 9.6 0.26 8.2 0.28 8.4 0.29 6.9 3945 369 3288 299 2506 843 0.24.6 0.27 0.8 0.30 8.9 0.32 9.5 0.34 7.3 0.32 7.7 4274 3974 3669 3348 2982 2580 899 0.3 3.2 0.34 2.5 0.37 0.3 0.40 0.4 0.42 0. 0.43 8.7 0.40 8.7 4570 4289 4005 374 3389 3037 26 0.38 4.8 0.4 4.8 0.44 2. 0.48.3 0.50 2. 0.52 0.6 0.53 9.8 493 4672 4408 444 386 3547 329 283 0.47 6.3 0.5 6.3 0.55 4.0 0.58 2.8 0.6 3.3 0.64 3.4 0.66.5 0.62.4 5227 4983 4735 4486 4229 3947 3642 2906 0.56 8.0 0.60 8.0 0.64 6.0 0.68 4.4 0.7 4.2 0.75 5. 0.77 4.3 0.78 2.4 5457 5223 4986 4747 4506 4246 3962 335 2284 0.64 9.3 0.68 9.3 0.72 7.7 0.76 5.5 0.80 5. 0.84 6.0 0.87 6.0 0.90 3.2 0.82 3.2 5753 553 5307 5080 4854 467 4359 3803 3030 0.75 20 0.79 20 0.84 9. 0.88 7.2 0.92 5.7 0.96 6.2 0.99 7.2.04 5..04 4.4 6246 6042 5836 5628 549 5209 4988 4499 3976 380 0.96 22.0 22.05 22.0 9.7.4 8.0.9 7.2.23 7.7.3 8.7.34 5.7.32 6.3 6575 638 686 5988 5790 5592 5389 4944 4457 395 309.2 24.7 24.22 24.27 2.3 20.36 8.8.4 8.4.49 9.5.55 8.7.57 7.4.49 7.4 6904 679 6533 6346 657 5968 5778 537 4920 4448 388 2892.29 25.35 25.40 25.45 23.50 2.55 20.60 9.5.69 2.77 2.8 8.0.8 8.7.65 8.6 7232 7056 6879 6700 6520 6340 660 5785 5369 4925 4455 372.49 26.54 26.60 26.65 25.70 24.76 22.8 2.9 2 2.00 22 2.06 2 2.08 9.4 2.06 9.9 20B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 82T - 2 3 730 790 850 895 950 990 050 35 200 250 330 430 0.50 0.75.00.25.50.75 2.00 2.25 2.50 2.75 3.00 3.25 2726 280 0.38 9.7 0.42 8.8 37 2628 2040 0.45 0.8 0.5 0.3 0.53 0. 349 304 2574 800 0.54.3 0.6 2.5 0.66. 0.63.4 3762 3344 293 2400 0.6 2. 0.69 3.5 0.75 2.3 0.77 2.3 4085 3705 3296 2876 2287 0.72 3.4 0.79 4.2 0.87 4.3 0.92 3.3 0.9 4.0 437 3959 3569 380 2720 0.80 4.8 0.87 4.8 0.96 5.4.02 4.2.05 4.7 466 4330 3972 3602 3224 275 0.94 6.5.0 5.7.0 7.0.9 6.8.23 5.6.25 6.4 54 4837 4520 48 3840 3489 3064 2302.5 9..24 8..32 8.3.43 9.5.5 8.8.56 8..58 8.6.49 8.4 5504 526 4924 46 4286 3967 3624 323 2503.34 2.43 9.4.52 9.3.62 2.73 2.80 20.85 9.8.86 20.77 20 578 5503 5226 4934 4625 434 4006 3658 3235.50 23.59 2.68 20.78 2.90 22.99 22 2.06 2 2.0 22 2.0 22 622 5958 5699 5434 552 4859 4568 4279 3957 3584 303.77 26.88 24.98 22 2.07 22 2.9 24 2.3 25 2.4 24 2.48 23 2.52 24 2.53 24 2.47 24 6765 6520 6278 6036 5786 5522 5250 4978 47 4430 4 3739 2.6 29 2.28 27 2.39 25 2.50 25 2.60 26 2.73 27 2.87 28 2.97 27 3.05 26 3. 26 3.5 27 3.5 27 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. Twin City Bulletin 405 7

Performance Data Belt Driven 240B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 45T /4 /3-2 420 445 470 485 530 560 600 635 660 705 750 80 850 890 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.00.25.50.75 3969 3503 2928 90 0.5 6.7 0.9 6.2 0.22 6.5 0.2 5.0 4206 3768 3260 2498 0.8 7.2 0.22 7.0 0.25 7.0 0.26 5.5 4442 403 357 293 0.2 8. 0.26 7.8 0.29 7.5 0.3 6.9 4584 486 3748 363 2207 0.23 8.3 0.28 8. 0.3 7.8 0.34 7.9 0.32 6.4 5009 4648 4259 3797 376 2085 0.30 9.7 0.35 9.6 0.40 8.9 0.43 9.5 0.45 7.8 0.40 7.3 5293 4953 4588 482 365 297 0.36 0.5 0.4 0.5 0.46 9.7 0.50 9.9 0.52 9.8 0.5 8.3 567 5355 509 466 4223 3675 2863 0.44 2.0 0.50 2.0 0.55. 0.59 0.9 0.63.3 0.65 0.3 0.6 9.5 600 5704 5389 5059 4683 424 3640 2730 0.52 3. 0.58 3. 0.64 2.4 0.69.9 0.73 2. 0.76 2.5 0.77 0.4 0.70 0.4 6238 5952 565 5337 4993 4572 4070 339 0.59 3.8 0.65 3.8 0.7 3.3 0.76 2.7 0.80 2.8 0.84 3.4 0.86 2.5 0.84.4 6663 6396 68 5827 5522 573 4753 4267 362 0.7 5.3 0.78 5.3 0.85 4.9 0.9 4.2 0.96 4..00 4.6.04 5.2.05 4.2.02 3.4 7088 6838 6578 6308 6029 5728 5376 4967 4500 2966 0.86 6.8 0.93 6.8.00 6.6.07 6.2.2 5.4.7 5.8.22 6.3.25 6.7.27 5.7.2 5.3 7655 7424 786 6939 6684 642 635 5806 5430 452.08 9..6 9..24 9..3 8.3.38 8.0.43 7.6.49 7.7.54 8.6.58 9.0.58 8.5 8033 784 7587 7354 73 6867 6608 632 5993 522 4087.25 20.34 20.42 20.49 9.6.56 9.2.63 8.9.68 8.9.74 9.4.79 2.84 20.75 9.8 84 8202 7987 7765 7537 7305 7065 6808 652 584 4996 3602.44 22.53 22.6 22.69 22.77 2.84 20.90 20.96 2 2.0 2 2.0 22 2.0 2.89 2 240B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 82T - 2 3 600 650 700 745 780 825 880 940 990 035 00 85 0.50 0.625 0.75.00.25.50.75 2.00 2.25 2.50 2.75 3.00 2837 2384 774 0.39 9.8 0.4 8.5 0.39 8.6 3330 2953 2523 0.47.6 0.50 0.9 0.52 9.9 3789 3464 304 284 0.56 2.6 0.60 3.3 0.63 2.3 0.63.3 48 3894 3578 2844 0.65 3.2 0.70 4. 0.73 4.4 0.78 2.2 4473 423 3924 3264 2394 0.73 3.5 0.78 4.4 0.825.2 0.89 3.0 0.87 3.0 4838 4607 4348 3765 3078 820 0.83 4. 0.89 4.7 0.94 5.6.02 5.3.06 3.9 0.92 3. 5273 5066 484 4329 374 3043 0.98 5.3.04 5.3.09 6.0.9 7.0.27 5.3.28 5.2 574 5549 5352 4904 4395 389 325.6 6.5.22 6.2.28 6.5.40 7.9.50 8.0.56 5.9.55 6.5 627 5944 576 5359 4900 4390 388 3090.32 7.8.39 7.6.46 7.3.58 8.2.69 9.3.79 8.4.84 7..79 7.3 6473 6295 62 5753 5333 4870 4355 378 2985.48 9.2.55 8.6.62 8.2.76 8.5.88 9.6.99 9.9 2.07 8.3 2.0 8.4 2.00 8.4 6969 6798 6633 6300 593 559 5072 4580 4040 3328.75 22.82 2.89 20 2.04 9.8 2.8 2 2.30 22 2.4 22 2.50 20 2.52 20 2.43 20 762 7450 7293 6987 6670 636 593 558 5069 4585 402 320 2.3 25 2.2 25 2.29 23 2.45 22 2.6 22 2.75 24 2.88 25 3.00 25 3.0 23 3.5 23 3.2 23 2.94 23 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. 8 Twin City Bulletin 405

Performance Data Belt Driven 300B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 84T /3-2 3 5 365 390 430 460 500 530 550 575 620 660 700 725 780 830 900 985 0 0.25 0.25 0.375 0.50 0.75.00.25.50.75 2.00 2.25 5626 4852 445 0.7 7.4 0.2 6.0 0.26 5.8 60 5269 4640 3686 0.2 8.5 0.25 7.0 0.30 6.3 0.33 6.3 6628 5934 5383 476 3459 0.27 9.9 0.32 8.7 0.38 7.5 0.43 7.9 0.43 6.3 7090 643 5908 5338 4545 0.34.3 0.38 0.2 0.45 8.7 0.5 8.7 0.55 8.7 7707 709 6589 605 5522 0.43 3. 0.48 2.3 0.55 0.3 0.62 9.7 0.68 0.4 869 7582 7092 6652 64 4406 0.5 4.3 0.56 3.8 0.63.7 0.7 0.9 0.78.3 0.82 9. 8478 7908 7426 7004 6532 563 0.58 5.3 0.62 5.3 0.69 2.6 0.78.8 0.85.7 0.94.6 8863 834 7842 7436 7005 5882 0.66 6.6 0.7 6.3 0.78 4.2 0.86 3. 0.95 2.5.06 3.7 9557 9042 8589 898 7823 6926 5433 0.82 8.8 0.87 8.8 0.95 6.9.04 5.7.3 4.8.28 5.7.33 3. 073 9686 9252 8868 858 7736 6688 0.99 2.05 2.2 9..2 7.6.3 6.7.49 6.5.6 7.5 0790 0328 99 9534 999 850 7654 6328.9 23.24 23.3 22.40 9.8.5 8.6.7 8..86 9.2.93 7.3 75 0727 032 9949 969 8965 888 720.32 25.37 25.45 23.54 2.64 20.86 9.0 2.03 20 2.4 20 2023 604 29 0862 0538 9944 9279 8499 737.64 28.70 28.78 27.87 24.97 23 2.2 22 2.42 2 2.58 23 2.67 22 2794 2397 203 689 369 0803 0220 9550 874 7549.98 3 2.04 3 2.2 3 2.2 28 2.3 26 2.57 24 2.8 23 3.00 24 3.6 25 3.2 23 3873 3505 362 2838 2532 983 470 0905 0275 9526 8490 2.52 35 2.59 35 2.67 35 2.76 33 2.87 3 3.2 27 3.40 27 3.65 26 3.85 27 4.02 28 4. 26 583 4845 4526 4224 3935 340 2925 2453 929 359 073 9897 3.3 40 3.37 40 3.46 40 3.56 40 3.67 37 3.92 34 4.22 3 4.52 30 4.79 30 5.0 3 5.20 32 5.35 32 300B BCRU / BCRUR / BCRUSH / BCRW / BCRWR Max. Motor Frame = 84T - 2 3 5 480 55 550 590 600 645 700 740 760 85 900 930 020 0 0.50 0.625 0.75.00.25.50.75 2.00 2.25 2.50 2.75 3.00 3604 2806 0.42 7.5 0.42 7.8 480 363 2693 0.50 8.9 0.53 8.7 0.5 8.8 4707 4258 3689 0.58 0.3 0.62 9.8 0.64 0.0 5280 4892 445 289 0.68.4 0.73.8 0.78 0.8 0.75.4 5420 5042 4622 333 0.7.5 0.76.9 0.8.4 0.82.9 6035 5696 5339 4466 0.84 2.4 0.90 3.2 0.96 3.5.04 3.4 6753 6463 646 5457 4536.02 4.0.0 4.3.6 5.2.28 5.4.33 6.0 7256 6998 670 609 5357 4232.7 5.4.25 5.2.32 6.0.46 6.7.55 7..55 7.4 7503 7259 6986 6393 576 4803.24 6.2.33 5.8.4 6..55 7..66 7..70 8. 872 7959 7723 792 6620 5948 5035.48 8.7.57 8.0.66 7.6.83 8.7.96 8.6 2.07 9.5 2.09 20 985 9002 8808 8372 788 7364 6777 6063 4969.89 22 2.00 20 2. 20 2.30 9.7 2.48 2 2.63 2 2.75 20 2.82 22 2.76 22 9537 9363 980 8772 8308 788 7285 6663 5862 444 2.06 23 2.7 22 2.28 2 2.49 20 2.68 2 2.84 22 2.98 2 3.09 22 3.2 22 2.92 22 0584 043 027 993 9545 98 8674 8203 7675 7064 6267 4905 2.62 25 2.74 25 2.86 24 3.0 22 3.32 22 3.53 23 3.72 24 3.88 23 4.0 23 4.0 23 4.0 23 3.87 23 69 482 340 042 078 0358 9965 9560 937 868 872 7588 3.27 28 3.4 28 3.54 27 3.8 26 4.06 25 4.30 25 4.53 26 4.73 26 4.92 26 5.08 25 5.2 25 5.29 25 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. Twin City Bulletin 405 9

Performance Data Belt Driven 360B BCRU / BCRUR / BCRUSH Max. Motor Frame = 84T 300 320 340 360 380 400 420-460 480 2 494 505 550 3 575 630 5 685 0 0.25 0.25 0.375 0.50 0.75 0.875.00.25.25.50.75 906 7953 6246 3068 0.3 8.7 0.38 7.2 0.44 6.7 0.36 5.4 974 8645 7220 4962 0.38 0.0 0.46 8.7 0.53 7.7 0.5 6.4 032 9326 80 674 0.45.4 0.54 0.0 0.62 8.5 0.63 8. 0928 9997 89 7270 490 0.54 2.4 0.63 2.0 0.72 9.4 0.76 9.9 0.70 8.2 535 0659 9664 8270 6400 0.63 3.9 0.72 3.7 0.82 0.8 0.89 0.9 0.88 9.2 242 35 0390 927 7548 5207 0.74 4.9 0.83 4.9 0.94 2.2.02 2..04.4 0.94 9.9 2749 966 098 0082 867 6860 0.85 6.2 0.96 6.2.06 3.4.6 2.5.20 3..8 0.9 3963 3254 248 636 0557 935 7509 4855.2 8.6.23 8.6.35 6.6.47 4.7.56 4.7.58 4.7.54 2.6.3.9 4570 3893 36 2369 435 058 8684 6866.27 9.9.39 9.9.5 8.2.63 6.5.74 5.7.79 6.4.78 4.7.69 3.6 4995 4339 3632 287 2009 0843 947 7929 5402.39 2.5 2.63 9.4.76 7.4.88 6.4.95 6.8.95 6.5.9 4.5.64 3.7 5329 4688 4000 3262 2443 37 0065 8603 648.48 2.6 2.73 20.86 7.9.98 6.9 2.07 7.6 2.09 7.4 2.06 4.9.87 4.6 6695 609 5489 4828 428 3334 2304 0 9784 582.92 25 2.05 25 2.8 25 2.32 22 2.46 20 2.59 9.9 2.68 20 2.70 20 2.67 8.2 2.24 6.6 7454 6895 6306 5682 5026 432 345 2365 86 8327 2.9 26 2.33 26 2.47 26 2.6 25 2.76 23 2.9 2 3.02 22 3.08 22 3.08 2 2.9 8. 924 866 8085 7530 6947 6340 5682 495 3964 797 933 2.88 32 3.03 32 3.9 32 3.34 30 3.50 28 3.66 27 3.82 25 3.95 25 4.03 26 4.04 24 3.83 22 20793 20327 9845 9343 882 8278 775 7 6429 4669 2634 025 3.70 38 3.87 38 4.03 38 4.20 38 4.37 36 4.54 33 4.72 3 4.90 30 5.04 30 5.20 30 5.9 28 4.99 24 360B BCRU / BCRUR / BCRUSH Max. Motor Frame = 23T 420 450 480-503 55 530 2 570 600 3 655 700 5 775 820 7-885 0.50 0.625 0.75.00.25.50.75 2.00 2.25 2.50 2.75 3.00 6363 5408 3478 0.79 9. 0.83 8.3 0.74 8. 7209 653 5477 0.93 0.6.00 0..02 9.6 8024 745 6695.08.4.6 2.0.23 0.8 8640 8057 745 5428.20 2..29 2.9.38 2.9.39.7 8956 8385 780 6099.27 2.8.36 3.6.45 3.7.53 2.3 9345 879 8242 6787.36 3.6.46 3.8.55 4.6.67 3.0 0346 986 9344 8264 654.62 5.3.73 5.3.84 6.2 2.02 5.6 2.06 4.8 067 0638 053 974 7897 550.84 7..96 6.9 2.07 6.9 2.28 8.0 2.42 6.3 2.24 5.8 2345 996 596 0703 979 8558 6490 2.29 2 2.43 9.9 2.56 9.7 2.80 20 3.02 20 3.5 8.4 3.00 8.5 3367 3057 277 96 08 083 8930 6922 2.70 23 2.86 23 3.00 22 3.27 22 3.52 23 3.74 22 3.86 2 3.66 2 5038 4773 4493 3862 38 2365 584 06 9274 737 3.5 27 3.69 26 3.85 25 4.8 24 4.47 24 4.74 26 5.00 25 5.9 24 5.22 24 4.83 24 6026 5782 5526 4969 430 3590 2882 225 80 9924 8056 4.07 30 4.26 30 4.44 28 4.79 27 5. 26 5.4 27 5.70 27 5.96 27 6.5 26 6.9 26 5.87 26 744 722 6992 6506 5959 5328 4660 4005 3322 2525 50 098 4.99 33 5.9 33 5.39 32 5.77 3 6.4 29 6.48 29 6.8 30 7.2 3 7.4 3 7.65 30 7.78 29 7.72 30 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. 20 Twin City Bulletin 405

Performance Data Belt Driven 420B BCRU / BCRUSH Max. Motor Frame = 23T 230 260 290 320-365 2 405 435 3 460 505 5 550 590 7-630 0 0.25 0.25 0.375 0.50 0.625 0.75.00.25.50.75 2.00 994 8009 6065 0.24 5.4 0.32 4.3 0.38 4.0 0393 9364 8097 0.35 6.9 0.44 6.0 0.54 6.2 592 0684 9667 8042 0.48 8.6 0.59 8.0 0.70 7.2 0.77 7.0 279 977 084 0008 857 0.65 0.5 0.76 0. 0.88 8.6.00 9.7.03 7.8 4590 3884 322 233 292 9693 0.96 2.9.09 2.9.23.4.37.2.49 2.0.53 0.7 689 5557 4886 476 3420 2439 003.3 5.2.46 5.2.6 4.4.76 3.4.9 3.6 2.04 4.3 2.09 2.7 7388 6802 685 5533 4859 407 3082 989.62 6.6.78 6.6.94 6.4 2.0 4.6 2.27 4.5 2.43 5.4 2.54 5.4 2.52 2.8 8387 7834 7256 6648 609 5356 4574 23.92 7.8 2.09 7.8 2.26 7.6 2.43 6.4 2.60 5.5 2.78 6.0 2.93 7.0 3.07 4.6 2086 9684 964 8622 8057 748 6874 5280 287 2.54 9.9 2.73 9.9 2.9 9.9 3.0 8.8 3.28 7.7 3.47 7.4 3.67 7.6 3.97 8.7 4.05 5.5 2985 2525 205 20562 20056 9532 9002 7833 69 3768 3.28 22 3.48 22 3.69 22 3.89 22 4.09 2 4.29 9.5 4.50 9.2 4.9 20 5.8 20 5.23 8.0 23583 2356 2277 22266 280 2322 20832 987 8599 6790 45 4.05 25 4.27 25 4.48 25 4.70 25 4.92 24 5.3 23 5.35 22 5.8 22 6.2 23 6.43 23 6.44 20 2582 24783 24374 23955 23525 23084 22630 2705 20704 9426 7623 5446 4.94 27 5.7 27 5.40 27 5.63 27 5.86 27 6.09 26 6.32 25 6.80 24 7.27 25 7.65 26 7.84 25 7.84 22 480B BCRU / BCRUSH Max. Motor Frame = 23T 95 20 240 265-305 2 335 355 3 380 420 5 455 490 7-520 0 0.25 0.25 0.375 0.50 0.625 0.75 0.875.25.00.25.50 0945 99 5902 0.28 4.9 0.37 4. 0.39 3. 787 039 777 0.35 5.7 0.44 5.0 0.52 4.6 347 992 0523 7433 0.53 7.4 0.63 6.7 0.73 6.8 0.74 4.7 4874 3524 2298 0274 5367 0.7 8.9 0.82 8.3 0.93 7.6.03 7.8 0.80 5.2 79 5938 4837 3724 769 8678.08.7.2.7.34 0.3.47 0.2.58 0.3.46 7.5 8803 7723 6688 5742 4525 2580 9692.43 4.2.58 4.2.72 2.4.86.9 2.00 2.6 2.0.9.95 9.4 9925 8905 796 703 6048 4490 2557 8406.70 5.3.86 5.3 2.0 4.2 2.6 3.2 2.30 3.2 2.45 3.7 2.49 2.2 2.08 0. 2329 20373 9444 8572 7735 668 5024 380 983 2.09 7.3 2.26 7.3 2.42 6.2 2.58 5.0 2.73 4.7 2.89 4.9 3.03 5. 3.05 3.5 2.58 2.0 23574 22707 2860 2035 20277 950 8564 74 5543 3549 874 2.82 20 3.0 20 3.9 20 3.37 7.8 3.54 7.3 3.7 7.2 3.88 7.5 4.06 7.6 4.3 7.3 4.04 4.8 3.23 3.8 25538 24737 2395 2380 22446 2756 2036 2055 889 745 5845 3.59 23 3.79 23 3.99 23 4.8 2 4.37 9.9 4.56 9.3 4.74 9.0 4.93 9.8 5.2 20 5.24 9.9 5.23 7.9 27503 26757 26025 25304 24598 23940 23300 22624 287 2073 9342 6340 4.48 25 4.70 25 4.9 25 5.2 25 5.33 23 5.53 22 5.73 2 5.93 2 6.3 22 6.34 23 6.5 23 6.48 9.3 2987 28483 2779 2709 26437 2579 2584 24577 23930 2362 2243 9588 5.35 28 5.59 28 5.82 28 6.04 28 6.26 26 6.48 25 6.69 24 6.90 23 7. 23 7.32 24 7.55 25 7.84 24 NOTES:. Performance certified is for Installation Type A: Free inlet, free outlet. 2. Power rating (B) does not include transmission losses. 3. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound ratings shown are loudness values in fan sones at 5 ft. (.5 m) in a hemispherical free field calculated per AMCA Standard 30. 5. Values shown are for Installation Type A: Free inlet fan sone levels. Twin City Bulletin 405 2

Typical Specifications DCRU/DCRUR/DCRW/DCRWR Roof and wall mounted exhaust fans shall be of the direct drive centrifugal type and shall be DCRU (upblast); DCRUR (upblast kitchen exhaust); DCRW (wall mount); and DCRWR (wall mount kitchen exhaust) as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested in accordance with AMCA 20 and AMCA 300 test codes for air moving devices and shall be guaranteed by the manufacturer to deliver rated published performance levels. Fans shall be licensed to bear the AMCA certified ratings seal for both sound and air. Models DCRU, and DCRW shall be CULUS 705 listed. Models DCRUR and DCRWR shall be CULUS 762 listed for the exhaust of grease-laden air. CONSTRUCTION Fans shall be constructed of aluminum for durability and appearance. Fan spinnings shall have a rolled bead edge for rigidity. Units shall have a deep venturi inlet to prevent snow and rain entry into the building. The curb cap shall include prepunched mounting holes for ease of installation. A conduit chase constructed of electrical metallic tubing shall be provided to the motor compartment. The curb base shall provide protection from weather. Lifting lugs shall be provided inside the motor compartment for ease of handling and installation. Fans shall bear a permanently attached nameplate displaying model and serial number of the unit for future identification. MOTOR ASSEMBLY Motor assembly shall be mounted on vibration isolators to eliminate vibration and noise transmission into the ductwork. Motors shall be mounted out of the exhaust airstream and shall have a cooling tube that provides air separate from the exhaust. EASE OF SERVICE No tools shall be needed to access motor compartment for inspection of motor and drive components. WHEEL Fan wheels shall be of the centrifugal backward inclined type, constructed of aluminum and containing a matching inlet venturi for optimum unit performance. Wheels shall be statically and dynamically balanced. MOTOR Motors shall be heavy-duty ball bearing type, closely matched to the fan load. All single-phase ODP motors shall contain thermal overload protection. All motors shall be UL and /or CSA recognized. Motors for use with speed control shall provide good speed controllability without any objectionable noise. DISCONNECT SWITCH A NEMA disconnect switch shall be supplied with wiring leading from the motor to the junction box on models DCRU and DCRW. A NEMA 3R disconnect switch shall be supplied with wiring leading from the motor to a junction box located outside of the motor compartment on models DCRUR and DCRWR. FINISH AND COATING Fans shall be constructed of aluminum. Optional coatings shall be available. ACCESSORIES When specified, accessories such as backdraft damper, roof curb, curb hinge, retaining chain, security hasp, variable speed controller, NEMA-4 disconnect switch, 2-speed switch, firestat, aluminum bird screen, aluminum insect screen, and special coatings 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 operating speed or maximum allowed for the particular construction type. Each wheel 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 Grade G6.3. 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. GUARANTEE The manufacturer shall guarantee the workmanship and materials for its roof and wall mounted centrifugal exhaust fans for at least one () year from startup or eighteen (8) months from shipment, whichever occurs first. 22 Twin City Bulletin 405

Typical Specifications BCRU/BCRUR/BCRUSH/BCRW/BCRWR Roof and wall mounted exhaust fans shall be of the belt driven centrifugal type and shall be BCRU (upblast); BCRUR (upblast kitchen exhaust); BCRUSH (smoke and heat exhaust); BCRW (wall mount); and BCRWR (wall mount kitchen exhaust) as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested in accordance with AMCA 20 and AMCA 300 test codes for air moving devices and shall be guaranteed by the manufacturer to deliver rated published performance levels. Fans shall be licensed to bear the AMCA certified ratings seal for both sound and air. Models BCRU, and BCRW shall be CULUS 705 listed. Models BCRUR and BCRWR shall be CULUS 762 listed for the exhaust of greaseladen air. Model BCRUSH shall be UL listed for Smoke Control Systems (500 F for 4 hours and 000 F for 5 minutes). CONSTRUCTION Models BCRU, BCRUR, BCRW, BCRWR and BCRUSH shall be constructed of aluminum for durability and appearance. Fan spinnings shall have a rolled bead edge for rigidity. Units shall have a deep venturi inlet to prevent snow and rain entry into the building. The curb cap shall include prepunched mounting holes for ease of installation. A conduit chase constructed of electrical metallic tubing shall be provided to the motor compartment. The curb base shall provide protection from weather. Lifting lugs shall be provided inside the motor compartment for ease of handling and installation. Fans shall bear a permanently attached nameplate displaying model and serial number of the unit for future identification. Model BCRUSH shall have aluminum nameplate. Fiberglass insulation on model BCRUSH shall line the bottom and wall of the motor compartment to protect motor and drive components from heat. MOTOR AND DRIVE ASSEMBLY Motor and drive assembly shall be mounted on vibration isolators to eliminate vibration and noise transmission into the ductwork. Motors and drives shall be mounted out of the exhaust airstream and shall have a cooling tube that provides air separate from the exhaust. Model BCRUSH shall have a minimum of three cooling tubes. EASE OF SERVICE No tools shall be needed to access motor compartment for inspection of motor and drive components. WHEEL Fan wheels shall be of the centrifugal backward inclined type, containing a matching inlet venturi for optimum unit performance. Fan wheels on models BCRU, BCRUR, BCRW and BCRWR shall be constructed of aluminum. Fan wheels on model BCRUSH shall be constructed of steel. Wheels shall be statically and dynamically balanced. SHAFT Fan shafts shall be precision-ground and polished. Shafts shall have a first critical speed of at least 25% of the fan s maximum operating speed. BEARINGS Bearings shall be of the one-piece, pillow block type with relubricable zerk fittings. Bearings shall be designed for air handling service with a minimum L-0 life in excess of 00,000 hours; L-50 500,000 hours at the maximum cataloged operating speed. Bearing mounting plate shall have self-aligning tabs for exact locating and alignment of bearings. DRIVE Drive assembly shall be constructed of heavy-gauge galvanized steel. Drives shall be sized for a minimum of 50% of driven horsepower. Machined, cast iron motor sheaves shall be adjustable for final system balance. Model BCRUSH shall have 2-groove drives. MOTOR Motors shall be heavy-duty ball bearing type, closely matched to the fan load. All single-phase ODP motors shall contain thermal overload protection. All motors shall be UL and /or CSA recognized. Motor adjustment shall allow precise belt tensioning for optimum belt life and one-person adjustment and servicing. DISCONNECT SWITCH A NEMA disconnect switch shall be supplied with wiring leading from the motor to the junction box on models BCRU and BCRW. A NEMA 3R disconnect switch shall be supplied with wiring leading from the motor to a junction box located outside of the motor compartment on models BCRUR, BCRWR and BCRUSH. FINISH AND COATING Models BCRU, BCRUR, BCRW, BCRWR and BCRUSH shall be constructed of aluminum. Optional coatings shall be available. ACCESSORIES When specified, accessories such as backdraft damper, roof curb, curb hinge, retaining chain, security hasp, NEMA-4 disconnect switch, 2-speed switch, firestat, steel premium grease fan construction, aluminum bird screen, aluminum insect screen, and special coatings 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 operating speed or maximum allowed for the particular construction type. Each wheel 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 Grade G6.3. 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. GUARANTEE The manufacturer shall guarantee the workmanship and materials for its roof and wall mounted centrifugal exhaust fans for at least one () year from startup or eighteen (8) months from shipment, whichever occurs first. Twin City Bulletin 405 23

Unlimited Options... Commercial Fans Centrifugal Fans Utility Sets Inline Centrifugal Fans Plenum Fans Radial Bladed Fans Centrifugal Roof & Wall Exhausters Filtered Supply Fans Gravity Relief Ventilators Ceiling & Cabinet Ventilators Propeller Wall Fans Tubeaxial Fans Vaneaxial Fans Propeller Roof Ventilators Fume Hood/Smoke & Heat Exhaust Fans Mancoolers Fiberglass Fans Industrial Fans Centrifugal Fans Forward Curved & Air Kit Components Inline Centrifugal Fans Plug Fans Radial Bladed Fans Radial Tip & High Efficiency Fans Pressure Blowers Tubeaxial Fans Vaneaxial Fans Custom Design Fans Easy Access Fans Insulated Fans Inlet Boxes - Integral and Detached Inlet Box Dampers Independent Bearing Pedestals Split Housings Bolted Housings Spark Resistant Construction Ultra Fine Balancing Modified Widths and Diameters Variable Frequency Drives API Specifications Special Materials Anti-Rotation Devices Sleeve Oil Bearings Volume Control Dampers Inlet Vane Control with External Mechanisms...One Solution..5MPP09/09 5959 Trenton Lane North Minneapolis, MN 55442-3237 Ph o n e: 763-55-7600 Fax: 763-55-760 w w w.tcf.c o m