TURBO PRESSURE BLOWERS

Transcription

1 Twin City Fan INUSTRIAL PROCESS AN COMMERCIAL VENTILATION SYSTEMS TURBO PRESSURE BLOWERS TBNA TBNS CATALOG 12 AUGUST 14

2 TURBO PRESSURE BLOWERS Overview TBNA I TBNS The TBN series of fans are low volume, high-pressure blowers designed for stable operation throughout their operating range. Multiple outlet sizes and wheel diameters allow the most efficient selections across a wide range of operating points. These units incorporate a high efficiency wheel design at an economical price. Typical Applications Pneumatic conveying Exhausting Combustion air Air knives Chemical processes Thermal oxidation Aeration Seal air Arrangement with Punched Outlet Flange TBNA Aluminum Wheel Capabilities Static pressures to 12" w.g. Airflow capabilities to,000 CFM High temperature applications to 0 F For higher performance requirements, see below. Housing Construction All TBN fans come standard with heavy gauge, continuously welded steel housings for rugged, heavy duty, long term service. Size 14 to 2 housings are reversible and rotatable. Size 14 to 2 TBN fans come standard with an inlet venturi with screen. All TBN fans come standard with a round punched flanged outlet connection. Wheel Types TBNS Steel Wheel For complete product performance, drawings and available accessories, download our Fan Selector program at tcf.com. TBNA Aluminum Wheel - The TBNA offers a radial air handling wheel of riveted aluminum construction. This wheel is available in both narrow N and wide W widths for sizes up to 2" diameter for optimum performance and high efficiency. The TBNA is designed to handle clean air applications with temperatures up to 0 F. The TBNA wheel is a non-reversible design. TBNS Steel Wheel - The TBNS is an all welded radial design steel wheel that is available in a variety of special materials. This wheel is available in both narrow N and wide W widths for sizes up to 2" diameter to meet specific performance requirements. The TBNS is designed to handle fumes, light particulates, and temperatures up to 0 F. The TBNS design is less efficient than the TBNA and requires a BHP correction. See the table in the Engineering ata section for correction factors. The TBNS wheel is a reversible design. 2 TWIN CITY FAN - CATALOG 12

3 TURBO PRESSURE BLOWERS Arrangements TBNA I TBNS Arrangement 1 (Belt riven) The fan wheel on an Arrangement 1 is overhung on the shaft, i.e., mounted at the end of the shaft. The motor can be mounted in any of the four AMCA standard motor positions, W, X, Y or Z. The two fan bearings are mounted on the bearing pedestal, out of the airstream. Arrangement 4 (irect rive) The fan wheel on an Arrangement 4 is mounted directly on the motor shaft with the motor mounted on a pedestal. An Arrangement 4 offers a compact, low maintenance design, as there are no fan bearings, fan shaft or drive parts to maintain. Variations of Arrangement 4 include 4 Standard (Pedestal Mount), 4HI (Horizontal Inlet Mount) and 4VI (Vertical Inlet Mount). Arrangement (irect rive) An Arrangement is a modified version of an Arrangement 1 used for direct drive. The bearing pedestal is extended to accommodate the motor. A flexible coupling connects the fan and motor shaft. Arrangement 1 Arrangement 4 Arrangement ARRANGEMENT TBNA MAXIMUM TEMP ( F) TBNS ST HIGH TEMP CONSTRUCTION ARR ARR N/A ARR Twin City Fan Optional Construction Spark Resistant Construction Available for Model TBNA only. Fan applications may involve the handling of fumes or vapors. 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 It is the specifier s 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. Construction Type A - All parts of the fan in contact with the airstream must be made of nonferrous material usually aluminum and limited to 0 F. High Temperature Construction (TBNS Only) 1 to 0 F - Package includes shaft seal, shaft cooler with guard, high temperature grease, and standard enamel paint. 1 to 0 F - Package includes shaft seal, shaft cooler with guard, high temperature grease, and high temperature aluminum paint. Special Materials - Stainless steel and other special alloys are available in the type TBNS radial design. Type B - The fan shall have a nonferrous wheel and nonferrous rub ring about the opening through which the shaft passes usually aluminum wheel and rub ring and limited to 0 F. Type C - Not available. Shaft Cooler & Safety Guard 3

4 ACCESSORIES Customer uctwork 2 4 Customer uctwork 1 Flanged Inlet For bolted pipe or duct connections. Flanged inlet is punched to ANSI /1 hole pattern. Coupling Guard OSHA style to enclose the coupling. Painted safety yellow Flanged Outlet punched to ANSI /1 hole pattern for bolted connection is standard. Inlet Silencer with Support Leg Welded steel construction with acoustical absorption material to reduce noise emanating from fan inlet. Flanged connection is suggested for mounting to the inlet of the fan. The opposite end of the silencer can be furnished with an inlet venturi, inlet flange, or inlet pipe assembly. Unless otherwise specified, the silencer will be furnished with flanges (punched) at both ends. Blast Gate with Handle A wafer-type butterfly valve for mounting to outlet flange allows controlling flow to full shutoff. Available for automatic control. Maximum temperature 2 F. Shaft & Bearing Guard OSHA style to enclose the shaft and bearings. Painted safety yellow. Other Accessories Include: Inlet Pipe Assembly (for slip-on pipe or duct connections) Plain Pipe Outlet (for slip type connections) Inlet Filter (non-ducted inlet installations) Inlet Filter w/ Hood (non-ducted inlet installations) Flanged Outlet Flex Connector Plain Pipe Outlet Flex Connector Outlet Silencer Shaft Closure Plate Isolation Base (Arrangements 1 & 4) Inertia Base Vibration Rails (Arrangements 4) Cast Motors Extended Lube Lines Insulated Housings (Steel Wall or Aluminum Clad) Insulation Pins 4 TWIN CITY FAN - CATALOG 12

5 ACCESSORIES 7 3 Customer uctwork Outlet amper (Cutaway View) Inspection oor Inlet Venturi allows for smooth air entry on nonducted fans. Inlet Screen Recommended for all non-ducted inlet installations to obtain catalog performance. Flanged Outlet punched to ANSI /1 hole pattern for bolted connection is standard. 7 Companion Flange with Rubber Sleeve & Clamps offers flexible connection between the fan and outlet ductwork. Flexible rubber sleeve is good to 0 F operation. Built-In Outlet amper offers a low cost single blade damper installed near the discharge of the fan housing for volume control where moderate leakage can be allowed. Available for manual control only. 4 5 Belt Guard OSHA style to enclose the V-belt drive. Painted safety yellow. Unitary Base Steel structural base for mounting fan and motor on common structure. Allows for complete assembly of fan, motor, and v-belt drive (Arrangement 1). Must be bolted to a rigid support structure. (See page for additional fan mounting.) 9 10 rain Standard 3 4" NPT half coupling located at the lowest point of the housing. Available with or without plug. Inspection oor Heavy duty bolted panel provides access for wheel inspection. Motor Slide Base for positioning motors and adjusting belt tension during installation and maintenance. Twin City Fan 5

6 VIBRATION ISOLATION Inertia Bases Intertia Bases provide a common support to fan, motor and drive including guards and utilize heavy duty structural channel with spring isolators. Inertia bases incorporate reinforcing rods and require customer supplied concrete. Inertia bases are typically used on longer, direct drive fans to mitigate assembly deflection, maintaining proper alignment between the motor, coupling, shaft and bearings. Flexible connectors at inlet and outlet are required. Vibration Rails with RIS Isolators (Sizes 14 to 2, Arr. 4 only) Vibration Rails with RIS Isolators are designed to limit forces transmitted to the support structure of an operating fan. Constructed of structural angle, the rails extend the distance between mounting points distributing a more even load to the isolators. Rubber-in-shear type isolators and flexible connectors at inlet and outlet are required. Vibration Isolation Bases provide a common support to fan, motor and drive including guards and utilize heavy duty structural channel. Vibration isloation bases require spring or rubber-in-shear type isolators that are designed to limit forces transmitted to the support structure of an operating fan. TWIN CITY FAN - CATALOG 12

7 ENGINEERING ATA Shaft & Bearings SHAFT IA. (IN.) BEARING TYPE SIZE TBNA TBNS TBNA/S TBNA TBNS ARR. 1 ARR. ARR. 1 ARR. ARR. 1 ARR. ARR. 14 to 1 1-3/1 1-3/1 1-3/1 1-3/1 HSHB SB-C SB-C 19 to /1 1-7/1 1-7/1 1-7/1 RB SB-C SB-C 23 to 2 1-7/1 1-7/1 1-7/1 1-7/1 RB SB-C SB-C / /1 1-3/1 RB-C SB-C HB-C 20 1-/1 1-3/1 1-/1 1-7/1 RB-C HB-C RB-C /1 1-11/1 2-3/1 1-7/1 RB-C SB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-3/1 1-/1 1-3/1 RB-C SB-C HB-C 27 1-/1 1-3/1 1-/1 1-7/1 RB-C HB-C RB-C /1 1-11/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C 20 1-/1 1-3/1 1-/1 1-3/1 RB-C SB-C HB-C 20 1-/1 1-3/1 1-/1 1-7/1 RB-C HB-C RB-C /1 1-11/1 2-7/1 1-7/1 RB-C HB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C 2 1-/1 1-3/1 1-/1 1-7/1 RB-C SB-C HB-C 2 1-/1 1-7/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 1-/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-11/1 2-7/1 1-/1 RB-C SB-C RB-C 20 1-/1 1-3/1 1-/1 1-7/1 RB-C SB-C HB-C /1 1-7/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 1-/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-11/1 2-7/1 1-/1 RB-C SB-C RB-C /1 1-7/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 2-3/1 2-7/1 1-7/1 RB-C HB-C RB-C /1 1-11/1 2-7/1 1-11/1 RB-C SB-C RB-C /1 1-/1 2-11/1 2-7/1 RB-C HB-C RB-C 2-3/1 1-7/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-11/1 2-7/1 1-/1 RB-C SB-C RB-C /1 2-3/1 2-11/1 2-7/1 RB-C HB-C RB-C 3 2-3/1 1-7/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-11/1 2-11/1 1-/1 RB-C HB-C RB-C /1 1-/1 2-11/1 2-7/1 RB-C RB-C RB-C /1 1-7/1 2-3/1 1-7/1 RB-C HB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-11/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 1-/1 2-11/1 2-11/1 RB-C RB-C HSHB SB: Standard uty Ball Bearing HB: Heavy uty Ball Bearing RB: Roller Bearing SRB: Roller Bearing with Split Pillow Block Housing HSHB: High Speed Heavy uty Ball Bearing SB-C: Concentric Standard uty Ball Bearing HB-C: Concentric Heavy uty Ball Bearing RB-C: Concentric Roller Bearing SHAFT IA. (IN.) BEARING TYPE SIZE TBNA TBNS TBNA/S TBNA TBNS ARR. 1 ARR. ARR. 1 ARR. ARR. 1 ARR. ARR. 2-3/1 1-11/1 2-3/1 1-7/1 RB-C SB-C RB-C /1 2-3/1 2-7/1 1-11/1 RB-C HB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C HB-C RB-C /1 1-/1 2-11/1 2-11/1 RB-C RB-C HSHB /1 1-11/1 2-3/1 1-11/1 RB-C HB-C RB-C /1 1-11/1 2-11/1 1-/1 RB-C RB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C HB-C RB-C /1 2-3/1 3-7/1 2-/1 RB-C HSHB HSHB /1 1-11/1 2-7/1 1-/1 RB-C HB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB 2-7/1 1-11/1 2-7/1 1-/1 RB-C HB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 1-/1 2-11/1 2-7/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB /1 1-11/1 2-7/1 1-/1 RB-C RB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 2-3/1 2-/1 2-11/1 RB-C RB-C HSHB /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB 2-7/1 1-11/1 2-7/1 1-/1 RB-C RB-C RB-C /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 2-3/1 2-/1 2-/1 RB-C HB-C HSHB /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 2-3/1 2-/1 2-/1 RB-C HB-C HSHB /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB /1 2-3/1 3-7/1 3-7/1 RB-C RB-C HSHB /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 2-3/1 2-/1 2-7/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB /1 2-3/1 3-7/1 3-7/1 RB-C RB-C HSHB /1 1-/1 2-11/1 2-3/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 2-7/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 2-/1 RB-C RB-C HSHB /1 2-3/1 3-7/1 3-7/1 RB-C HSHB HSHB /1 1-/1 2-11/1 2-11/1 RB-C RB-C HSHB /1 2-3/1 3-7/1 2-7/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 3-7/1 RB-C RB-C HSHB /1 2-3/1 3-7/1 3-7/1 RB-C HSHB HSHB /1 1-/1 2-/1 2-3/1 RB-C SRB RB-C /1 2-3/1 3-7/1 2-7/1 RB-C RB-C RB-C /1 2-3/1 3-7/1 3-7/1 RB-C RB-C HSHB /1 2-7/1 3-7/1 3-7/1 RB-C RB-C HSHB Twin City Fan 7

8 ENGINEERING ATA Bare Fan Weights (Lbs.) SIZE ARRANGEMENT 1 ARRANGEMENT 4 ARRANGEMENT TBNA TBNS TBNA TBNS TBNA TBNS 14N to 1N W to 1W N to 22N W to 22W N to 2N W to 2W xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx Note: Weights provided above are for the largest inlet/outlet size available on the housing. Housing Thickness SIZE HOUSING THICKNESS SIES SCROLL 14 to 2 10 GA. 10 GA. 27 to 3 0. IN 0. IN Inlet Suction Pressure Correction If the inlet pressure is suction or negative, the static pressure required must be corrected by the inlet density ratio. Example: Operating conditions: F at sea level. System resistance at the inlet of the fan is ". The correction factor from the table at right is 0.2, or it can be calculated as follows: Inlet Suction Pressure Correction Factors INLET SUCTION PRESSURE (IN. W.G.) (7.5 ") 7.5 = 0.2 Equivalent static pressure to be used for selection from the standard performance curves: CORRECTION FACTOR " 0.2 = 44.3" Actual air density at the inlet of the fan: lb/ft 3 x 0.2 = 0.07 lb/ft 3 INLET SUCTION PRESSURE (IN. W.G.) CORRECTION FACTOR Correction Factor = (7.5 Inlet Suction Pressure) 7.5 Temperature erate AIRSTREAM TEMP ( F) TBNA TBNS Sizes 14-2 Sizes Sizes 33- Sizes 3-3 Steel Stainless Steel Steel Steel N/A N/A N/A N/A TWIN CITY FAN - CATALOG 12

9 ENGINEERING ATA Maximum RPM, Wheel Weights and WR 2 (moment of inertia in lb-ft 2 ) SIZE MAX. RPM TBNA (ALUMINUM) WT. (LB) WR 2 (LB-FT 2 ) WHEEL MAX. RPM TBNS (STEEL) WT. (LB) WR 2 (LB-FT 2 ) 14N W N W N W N W N W N W N W N W N W N W N W N W N W * * * * * * * * * * * * SIZE MAX. RPM TBNA (ALUMINUM) WT. (LB) WR 2 (LB-FT 2 ) WHEEL MAX. RPM TBNS (STEEL) WT. (LB) WR 2 (LB-FT 2 ) * * * * * * * * * * * * * * * * * * * * *..3 30* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Arrangement 1, sizes 0xx - 3xx with 12 and 14 outlet and 3-3 with all outlet sizes are limited to RPM and 0 BHP maximum. Twin City Fan 9

10 PERFORMANCE ATA Selection The performance curves shown are for Model TBNA and are based on standard air density: F at sea level (0.075 lb/ft 3 ). For Model TBNS performance, see Fan Selector (FS10). Selection Steps 1. Locate the CFM required on the horizontal axis. 2. Follow a vertical line up to the fan curve closest to the required SP. This will determine the fan size. The dotted lines represent system characteristic curves. 3. Interpolate BHP. Selection Example: Size = 22N4 RPM = ensity = lb/ft 3 Outlet Velocity = 5727 FPM CFM = 0 BHP (TBNA) = 4.5 SP = 33." Model Nomenclature (Size 14 Size 2) TBNA N 4 MOEL OUTLET SIZE (IN.) TBNA Aluminum wheel TBNS Steel wheel NOMINAL WHEEL SIZE WHEEL WITH N Narrow W Wide Model Nomenclature (Size 27 Size 3) TBNS 3 12 MOEL OUTLET SIZE (IN.) TBNA Aluminum wheel TBNS Steel wheel NOMINAL WHEEL SIZE xx0 xx = Wheel Size TBNA 4 In. Outlet Outlet Area: 0.09 ft 2 14N4, N4, N4, 1N4, 1N4, 17N4, 17N4, 1N4 1N4 RPM RPM 1N4 17N4 1N4 N4 14N4 1½ 2 2½ 3 1½ 2 2½ 1 1½ 2 1 1½ 1 2 1½ 2 2½ 3½ 3 2½ 4 3½ 3 2½ 4½ 4 3½ 3 5 4½ 4 10 (11) 0 (2291) 0 (343) 0 (2) 0 (5727) 0 (73) 0 (1) 0 (914) 0 (109) 4½ 0 CFM (115) (OV) 19N4, 19N4, N4, N4, 21N4, 21N4, 22N4 22N4 RPM RPM 3 3½ 4 4½ 5 22N4 2½ 3 3½ 4 4½ 21N4 2 2½ 3 3½ N ½ 3 19N4 3½ 4 5 4½ 4½ (11) 0 (2291) 0 (343) 0 (2) 0 (5727) 0 (73) 0 (1) 0 (914) 0 (109) 0 CFM (115) (OV) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 10 TWIN CITY FAN - CATALOG 12

11 PERFORMANCE ATA TBNA In. Outlet Outlet Area: 0. ft 2 14W, W, 1W, 17W, 1W RPM RPM 10 1W W 1½ 14W (510) 1W 17W 2 1½ 0 (10) 2½ (31) 2½ 3 0 (41) 2½ 3 3½ 4 4½ 2½ 3 2 3½ 4 4½ 5 3 3½ 4 4½ 5 0 (51) 0 (1) 2½ 0 (71) 0 (2) 3½ 3 0 (92) 4 0 (5102) 5 3½ 1 (512) 4½ 10 (122) (33) (7143) 4½ 10 CFM (753)(OV) 19N, N, 21N, 21N, 22N 22N RPM RPM 3 22N 2½ 21N 2 N 2 19N (510) 0 (10) 3 3½ 2½ 3 3½ 4 4½ 5 2½ 3 3½ 4 4½ 0 (31) 4 4½ 5 7 3½ 4 4½ 5 0 (41) 0 (51) 0 (1) 0 (71) 5 0 (2) 7 0 (92) 0 (5102) (512) 7 10 (122) (33) (7143) 10 CFM (753)(OV) 23N, 23N, 24N, 24N, N, N, 2N 2N RPM RPM N N N N (510) 0 (10) 0 (31) 0 (41) 0 (51) 0 (1) 0 (71) 0 (2) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 0 (92) 0 (5102) 1 (512) 10 (122) 10 (33) 10 (7143) 10 CFM (753)(OV) 11

12 PERFORMANCE ATA 20, 27, 20, 2, 20 RPM (510) 0 (10) 0 (31) 0 (41) 0 (51) 0 (1) 0 (71) 0 (2) 0 (92) 0 (5102) 1 (512) 10 (122) 10 (33) 10 (7143) 10 CFM (753)(OV) TBNA In. Outlet Outlet Area: 0. ft 2 W, 1W, 17W, 1W RPM RPM 1W 17W 1W W 1½ 2½ ½ 4 4½ ½ 4 4½ 5 2½ 2½ 3 3½ 4 4½ 5 2½ 3 3½ 4 4½ (573) 0 (114) 0 (1719) 0 (2292) 0 (25) 10 (343) 10 (11) 10 (5) 10 (5) 00 (5731) 20 CFM (4)(OV) 19W, W, W, 21W, 21W, 22W 22W RPM RPM 22W 21W W 19W 0 (573) 5 0 (114) (1719) 0 (2292) 7 0 (25) 10 (343) 10 (11) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi (5) (5) (5731) (4) 1 14 (77) (74) 20 CFM (23)(OV) 12 TWIN CITY FAN - CATALOG 12

13 PERFORMANCE ATA 23N, 24N, N, 2N RPM RPM N N N N 0 (573) 0 (114) 0 (1719) (2292) (25) (343) (11) (5) (5) (5731) (4) (77) (74) CFM (23)(OV) 20, 20, 27, 27, 20, 20, 2, 2, RPM RPM (573) 0 (114) 0 (1719) 0 (2292) 0 (25) 10 (343) 10 (11) 10 (5) 10 (5) 00 (5731) 20 (4) (77) 20 (74) 20 (23) 00 (59) CFM (919)(OV) 00,, 3, 31, RPM RPM (573) 0 (114) 0 (1719) 0 (2292) 0 (25) 10 (343) 10 (11) 10 (5) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 10 (5) 00 (5731) 20 (4) (77) 20 (74) 20 (23) 00 (59) CFM (919)(OV) 13

14 PERFORMANCE ATA 30, 33,, 34, RPM RPM CFM (71) (1433)(2149)(25)(2)(429)(14)(5731)(447)(713)(7)(59)(9312) (29) (107) (1141) (1217) (1294) (1310) (14327) (OV) TBNA 10 In. Outlet Outlet Area: 0. ft 2 19W10, W10, 21W10, 22W10 22W10 RPM RPM W10 19W10 22W10 21W10 0 (5) (1101) 0 (151) 10 (22) 10 (2752) 10 (33) 2 (353) (44) 20 (4954) 1 00 () () () 2 30 (7) CFM (7) (OV) 23W10, 24W10, W10, 2W10 RPM RPM 2W10 W10 24W10 23W10 0 (5) 0 (1101) 0 (151) 10 (22) 10 (2752) 10 (33) 2 (353) (44) 20 (4954) 00 () 30 () 30 () 30 (7) 40 CFM (7) (OV) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 14 TWIN CITY FAN - CATALOG 12

15 PERFORMANCE ATA 210, 27510, 210, 2510, 210 RPM RPM (917) 0 (1) 10 (2752) 00 (3) (7) 00 () (422) 00 (7339) 40 (7) 00 CFM (9174) (OV) 010, 510, 31010, 310, 310 RPM RPM (917) 0 (1) 10 (2752) 00 (3) (7) 00 () (422) 00 (7339) 40 CFM (7) (OV) 310, 310, 310, 310, 310 RPM RPM (917) 0 (1) 10 (2752) 00 (3) (7) 00 () (422) 00 (7339) 40 (7) 00 (9174) 50 CFM (92) (OV) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi.

16 PERFORMANCE ATA 310, 3510, 310, 37510, 310 RPM RPM (1) 00 (3) 00 () 00 (7339) 00 (9174) 00 (19) 00 CFM (1244) (OV) TBNA 12 In. Outlet Outlet Area: 0.79 ft 2 23W12, 24W12, W12, 2W12 RPM 2W12 W12 24W12 23W12 0 (37) 0 (1274) 10 (1911) 00 (4) (315) 00 (322) (49) 00 (9) 40 (5732) 00 (39) 50 CFM (0)(OV) 212, 27512, 212, 2512, 212 RPM RPM (1274) 00 (4) 00 (322) 00 (9) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 00 (39) 00 (743) 00 (917) CFM (10191) (OV) 1 TWIN CITY FAN - CATALOG 12

17 PERFORMANCE ATA 012, 512, 31012, 312, 312 RPM RPM (1274) 00 (4) 00 (322) 00 (9) 00 (39) 00 (743) 00 (917) 00 CFM (10191) (OV) 312, 312, 312, 312, 312 RPM RPM (1274) 00 (4) 00 (322) 00 (9) 00 (39) 00 (743) 00 (917) 00 (10191) 00 (1145) 00 CFM (12739) (OV) 312, 3512, 312, 37512, 312 RPM RPM (1274) 00 (4) 00 (322) 00 (9) 00 (39) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 00 (743) 00 (917) (10191) (1145) CFM (12739) (OV) 17

18 PERFORMANCE ATA 014, 514, 31014, 314, 314 RPM RPM TBNA 14 In. Outlet Outlet Area: 1.07 ft (9) 00 (171) 00 (2) 00 (3742) 00 (477) 00 (513) 00 (54) 00 (744) (419) (95) 10 (102) CFM (112) (OV) 314, 314, 314, 314, 314 RPM (9) 00 (171) 00 (2) 00 (3742) 00 (477) 00 (513) 00 (54) 00 (744) 00 (419) 00 (95) 10 (102) CFM (112) (OV) 314, 3514, 314, 37514, 314 RPM RPM (171) 00 (3742) 00 (513) 00 (744) 00 (95) (112) CFM (19) (OV) Performance shown is with a ducted outlet, and a ducted inlet or inlet with venturi. 1 TWIN CITY FAN - CATALOG 12

19 PERFORMANCE ATA 31, 351, 31, 3751, 31 RPM RPM TBNA 1 In. Outlet Outlet Area: 1. ft (1433) 00 (25) 00 (429) 00 (5731) 00 (713) (59) 3 (29) (1141) CFM (1294) (OV) 19

20 IMENSIONAL ATA Arrangement 1 (Sizes 14 2) HE HA P Z ISCH. HC J J-0.3 FAN SHAFT G GC 0.31 Q KL KS SE S H FAN HSG. FAN HSG. PF I.. F O VENTURI FLANGE INLET (ST) INLET (OPTIONAL) B OUTS. HSG. FAN HSG. C O.. INLET PIPE ASS'Y (OPTIONAL) CLOCKWISE ROTATION TOP HORIZONTAL ISCHARGE 'CW TH' WITH ST. FLANGE OUTLET M M (4) 0.5 IA. BASE HOLES MOTOR SHAFT L FAN HSG. K F O.. PF I.. "NH" NO. OF "H" HOLES EQUALLY SPACE ON "BC" BOLT CIRCLE CC O.. A I.. "FN" NO. OF "J" HOLES EQUALLY SPACE ON "FB" BOLT CIRCLE FOUNATION PLAN INLET FLANGE OUTLET FLANGE HB H HH HA CL ISCH. AA O.. Q CW TAU PLAIN PIPE OUTLET (OPTIONAL) HC HG HF HB HA HE HB HF HA H HG HH HC CW UB CW TA CW BH CW BAU Notes: 1. CW rotation shown, CCW rotation similar but opposite. 2. Bolt patterns on inlet and outlet flanges straddle centerline. 3. Inlet screen included with venturi inlet. TWIN CITY FAN - CATALOG 12

21 Arrangement 1 (Sizes 14 2) IMENSIONAL ATA FAN SIZE A AA B BC C CC H J F FB FN G GC H HA HB HC 14N4, N4, 1N4, 17N4, 1N W, W, 1W, 17W, 1W W, 1W, 17W, 1W N4, N4, 21N4, 22N N, N, 21N, 22N W, W, 21W, 22W W10, W10, 21W10, 22W N, 24N, N, 2N N, 24N, N, 2N W10, 24W10, W10, 2W W12, 24W12, W12, 2W FAN SIZE H HE HF HG HH J K KL KS L M NH P PF Q S SE Z 14N4, N4, 1N4, 17N4, 1N x W, W, 1W, W, 1W x W, 1W, 17W, 1W x N4, N4, 21N4, 22N x N, N, 21N, 22N x W, W, 21W, 22W x W10, W10, 21W10, 22W x N, 24N, N, 2N x N, 24N, N, 2N x W10, 24W10, W10, 2W x W12, 24W12, W12, 2W x IMENSIONS ARE NOT TO BE USE FOR CONSTRUCTION. CERTIFIE RAWINGS AVAILABLE UPON REQUEST. BC1177 Twin City Fan 21

22 IMENSIONAL ATA Arrangement 1 (Sizes 27 3) HE HA ISCH P B O.S. HSG J J -.3 J -. Q HC PF I... THK SIES. THK SCROLL HSG HSG HSG G GC A H A HSG FLANGE INLET VENTURI INLET PIPE INLET RIVE SIE VIEW CW TH M L K HSG (N) R HOLES EQ. SP. STRALING ON T B.C. F O.. M CL SHAFT.3 THK SECTION A-A (4).75 BASE HOLES PF I.. INLET/OUTLET FLANGE ETAIL H HH HB CW TAU HC Q HG HF HB HA HE HB HF HA H HG HH Q HC CW UB CW TA CW BH CW BAU Notes: 1. CW rotation shown, CCW rotation similar but opposite. 22 TWIN CITY FAN - CATALOG 12

23 Arrangement 1 (Sizes 27 3) IMENSIONAL ATA FAN SIZE H HE HF HG HH G G M Q 2xx 2xx xx 3xx xx 3xx xx 3xx FAN SIZE OUTLET SIZE B F H HA HB HC J K N P PF R T 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx IMENSIONS ARE NOT TO BE USE FOR CONSTRUCTION. CERTIFIE RAWINGS AVAILABLE UPON REQUEST. BC53A Twin City Fan 23

24 ISCH. IMENSIONAL ATA Arrangement 4 (Sizes 14 2) HE HA P Z HC J J Q FAN HSG FAN HSG PF I.. F O.. FAN HSG C O.. MOTOR SHAFT G GC H VENTURI INLET (ST) B OUTS. HSG FLANGE INLET (OPTIONAL) INLET PIPE ASSEMBLY (OPTIONAL) CLOCKWISE ROTATION TOP HORIZONTAL ISCHARGE 'CW TH' WITH ST. FLANGE OUTLET M (4) 0.5 IA. BASE HOLES MOTOR SHAFT FAN HSG F O.. PF I.. CC O.. A I.. M L K FOUNATION PLAN 'NH' No. of 'H' Holes Equally Spaced on 'BC' Bolt Circle INLET FLANGE 'FH' No. of 'J' Holes Equally Spaced on 'FB' Bolt Circle OUTLET FLANGE HA H HH 2.00 AA O.. HB ISCH. Q CW TAU PLAIN PIPE OUTLET (OPTIONAL) HC HG HF HB HA HE HB HF HA H HG HH HC CW UB CW TA CW BH CW BAU Notes: 1. CW rotation shown, CCW rotation similar but opposite. 2. Bolt patterns on inlet and outlet flanges straddle centerline. 3. Inlet screen included with venturi inlet. 24 TWIN CITY FAN - CATALOG 12

25 Arrangement 4 (Sizes 14 2) IMENSIONAL ATA FAN SIZE 14N4, N4 1N4, 17N4, 1N4 14W, W 1W, 17W, 1W W, 1W 17W, 1W 19N4, N4 21N4, 22N4 19N, N 21N, 22N 19W, W 21W, 22W 19W10, W10 21W10, 22W10 23N, 24N N, 2N 23N, 24N N, 2N 23W10, 24W10 W10, 2W10 23W12, 24W12 W12, 2W12 FAN SIZE 14N4, N4 1N4, 17N4, 1N4 14W, W 1W, 17W, 1W W, 1W 17W, 1W 19N4, N4 21N4, 22N4 19N, N 21N, 22N 19W, W 21W, 22W 19W10, W10 21W10, 22W10 23N, 24N N, 2N 23N, 24N N, 2N 23W10, 24W10 W10, 2W10 23W12, 24W12 W12, 2W12 MOTOR FRAME A AA B BC C CC H J F FB FN G GC H HA 143T & 1T T & 14T T & 1T T & 14T T & 14T T & 2T T T & 14T T & 14T T & 2T T & 14T T & 2T T & T T & 2T T & T TS T T & 2T T & T T & 2T T & T T & T TS TS TS & 32TS TS TS & 32TS MOTOR FRAME HB HC H HE HF HG HH J K L M NH P PF Q Z 143T & 1T T & 14T T & 1T T & 14T T & 14T T & 2T T T & 14T T & 14T T & 2T T & 14T T & 2T T & T T & 2T T & T TS T T & 2T T & T T & 2T T & T T & T TS TS TS & 32TS TS TS & 32TS BC117E IMENSIONS ARE NOT TO BE USE FOR CONSTRUCTION. CERTIFIE RAWINGS AVAILABLE UPON REQUEST. Twin City Fan

26 IMENSIONAL ATA Arrangement 4 (Sizes 27 3) HE HA ISCH P (APPROX.) B O.S. HSG J J -.3 J -.. THK SIES Q HC PF I.. G GC A H A. THK SCROLL HSG HSG FLANGE INLET HSG VENTURI INLET HSG PIPE INLET M M RIVE SIE VIEW CW TH L MOTOR K HSG (N) R HOLES EQ. SP. STRALING ON T B.C. F O...3 THK SECTION A-A H HH HB (4).75 BASE HOLES PF I.. INLET/OUTLET FLANGE ETAIL FAN SIZE H HE HF HG HH Q 2xx 2xx xx 3xx xx 3xx xx 3xx Notes: 1. CW rotation shown, CCW rotation similar but opposite. CW TAU HC Q HG HF HB HA HE HB HF HA H HG HH Q HC (Sizes 2xx-3xx) G (Sizes 3xx-3xx) CW UB CW TA CW BH CW BAU FAN SIZE OUTLET SIZE B F HA HB HC J N PF R T 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx TWIN CITY FAN - CATALOG 12

27 Arrangement 4 (Sizes 27 3) IMENSIONAL ATA FAN SIZE 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx MOTOR FRAME G G G M 4T T TS 2TS TS 32TS TS 35TS TS 5TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS Twin City Fan FAN SIZE 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx MOTOR FRAME H K P xxx0 xxx0 xxx10 xxx12 xxx14 xxx1 xxx0 xxx0 xxx10 xxx12 xxx14 xxx1 xxx0 xxx0 xxx10 xxx12 xxx14 xxx1 4T T TS 2TS TS 32TS TS 35TS TS 5TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS IMENSIONS ARE NOT TO BE USE FOR CONSTRUCTION. CERTIFIE RAWINGS AVAILABLE UPON REQUEST. BC5391A 27

28 IMENSIONAL ATA Arrangement (Sizes 14 2) HE HA ML (APPROX.) P Z ISCH Q HC 0. SHAFT GAP KL KS SE S FAN HSG FAN HSG PF I.. F FAN HSG J-0.3 C O.. MOTOR SHAFT G GC H VENTURI INLET (ST) B OUTS. HSG FLANGE INLET (OPTIONAL) INLET PIPE ASS'Y (OPTIONAL) CLOCKWISE ROTATION TOP HORIZONTAL ISCHARGE 'CW TH' WITH ST FLANGE OUTLET M M () 0.5 IA. BASE HOLES MOTOR SHAFT FAN SHAFT LA L K 2. FAN HSG F O.. PF I.. "NH" NO. OF "H" HOLES EQUALLY SPACE ON "BC" BOLT CIRCLE INLET FLANGE CC O.. A I.. "FN" NO. OF "J" HOLES EQUALLY SPACE ON "FB" BOLT CIRCLE OUTLET FLANGE FOUNATION PLAN HB H HH HA ISCH. AA O.. Q Notes: 1. CW rotation shown, CCW rotation similar but opposite. 2. Bolt patterns on inlet and outlet flanges straddle centerline. 3. Inlet screen included with venturi inlet. CW TAU PLAIN PIPE OUTLET (OPTIONAL) HC HG HF HB HA HE HB HF HA H HG HH HC CW UB CW TA CW BH CW BAU FAN SIZE 14N4, N4 1N4, 17N4, 1N4 14W, W 1W, 17W, 1W W, 1W 17W, 1W 19N4, N4 21N4, 22N4 19N, N 21N, 22N 19W, W 21W, 22W 19W10, W10 21W10, 22W10 23N, 24N N, 2N 23N, 24N N, 2N 23W10, 24W10 W10, 2W10 23W12, 24W12 W12, 2W12 MOTOR FRAME A AA B BC C CC H J F FB FN G GC H HA 143T & 1T T & 14T T & 1T T & 14T T & 14T T & 2T T & 1T T & 14T T & 14T T & 2T T & 14T T & 2T T & T.3 213T & 2T.3 4T & T TS & 2TS 4. 12T & 14T T & 2T T & T T & 2T T & T T & T TS & 2TS TS & 32TS.3 24TS & 2TS TS & 32TS TWIN CITY FAN - CATALOG 12

29 Arrangement (Sizes 14 2) IMENSIONAL ATA FAN SIZE 14N4, N4 1N4, 17N4, 1N4 14W, W 1W, 17W, 1W W, 1W 17W, 1W 19N4, N4 21N4, 22N4 19N, N 21N, 22N 19W, W 21W, 22W 19W10, W10 21W10, 22W10 23N, 24N N, 2N 23N, 24N N, 2N 23W10, 24W10 W10, 2W10 23W12, 24W12 W12, 2W12 MOTOR FRAME HB HC H HE HF HG HH J K KL KS L LA M ML NH 143T & 1T x T & 14T T & 1T x T & 14T T & 14T x T & 2T T & 1T x T & 14T T & 14T x T & 2T T & 14T T & 2T x T & T T & 2T T & T x TS & 2TS T & 14T T & 2T x T & T T & 2T x T & T T & T TS & 2TS x TS & 32TS.3. 24TS & 2TS x TS & 32TS FAN SIZE 14N4, N4 1N4, 17N4, 1N4 14W, W 1W, 17W, 1W W, 1W 17W, 1W 19N4, N4 21N4, 22N4 19N, N 21N, 22N 19W, W 21W, 22W 19W10, W10 21W10, 22W10 23N, 24N N, 2N 23N, 24N N, 2N 23W10, 24W10 W10, 2W10 23W12, 24W12 W12, 2W12 MOTOR FRAME P PF Q S SE Z 143T & 1T 12T & 14T T & 1T 12T & 14T T & 14T 213T & 2T T & 1T 12T & 14T T & 14T 213T & 2T T & 14T 213T & 2T T & T 213T & 2T 4T & T TS & 2TS 12T & 14T 213T & 2T T & T 213T & 2T 4T & T T & T 24TS & 2TS TS & 32TS 24TS & 2TS 324TS & 32TS BC1341 IMENSIONS ARE NOT TO BE USE FOR CONSTRUCTION. CERTIFIE RAWINGS AVAILABLE UPON REQUEST. Twin City Fan Twin City Fan 29

30 IMENSIONAL ATA Arrangement (Sizes 27 3) P HE HA ISCH HC Q. GAP ML (APPROX.) B O.S. HSG J J -.3 J -. PF I... THK SIES G GC A H A. THK SCROLL HSG HSG FLANGE INLET HSG VENTURI INLET HSG PIPE INLET RIVE SIE VIEW CW TH M LA L K (N) R HOLES EQ. SP. STRALING ON T B.C. F O.. M SHAFT HSG.3 THK (4).75x1.00 SLOTS SECTION A-A (2).75 HOLES PF I.. INLET/OUTLET FLANGE ETAIL H HH HB FAN SIZE H HE HF HG HH Q 2xx 2xx xx 3xx xx 3xx xx 3xx Notes: 1. CW rotation shown, CCW rotation similar but opposite. CW TAU HC Q HG HF HB HA HE HB HF HA H HG HH Q HC CW UB CW TA CW BH CW BAU FAN SIZE OUTLET SIZE B F HA HB HC J K N PF R T 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx TWIN CITY FAN - CATALOG 12

31 Arrangement (Sizes 27 3) IMENSIONAL ATA FAN SIZE 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx MOTOR FRAME G G LA M ML 4T T TS 2TS TS 32TS TS 35TS TS 5TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS Twin City Fan FAN SIZE 2xx 2xx 0xx 3xx 3xx 3xx 3xx 3xx MOTOR FRAME H xxx0 xxx0 xxx10 xxx12 xxx14 xxx1 xxx0 xxx0 xxx10 xxx12 xxx14 xxx1 4T T TS 2TS TS 32TS TS 35TS TS 5TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS T T TS 2TS TS 32TS TS 35TS TS 5TS TS 4TS TS 449TS P BC5392A IMENSIONS ARE NOT TO BE USE FOR CONSTRUCTION. CERTIFIE RAWINGS AVAILABLE UPON REQUEST. 31

32 TYPICAL SPECIFICATIONS Model TBNA Fans shall be Model TBNA Turbo Pressure Blowers as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested and rated in accordance with industry accepted test codes and shall be guaranteed by the manufacturer to deliver rated published performance levels. HOUSING Fan housings shall be constructed of continuously welded heavy gauge steel. Sizes 14 through 2 shall be rotatable and reversible. A choice of inlet connections at no additional charge shall include an inlet venturi with screen, an inlet pipe assembly and a punched flange to ANSI /1. The outlet connection shall be flanged and punched to ANSI /1 with the option of a plain pipe assembly on Sizes WHEEL Model TBNA wheels shall be constructed of aluminum alloy with riveted construction. Wheels shall be statically and dynamically balanced. The complete fan assembly shall be test balanced at the operating speed prior to shipment. SHAFT (ARR. 1 & ONLY) Shafts shall be AISI 10 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.43 times the maximum speed. BEARINGS (ARR 1, ONLY) 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-) in excess of 0,000 hours at the maximum fan RPM. FINISH AN COATING 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 inlet filters, inlet filters with hoods, inlet and outlet silencers, flexible connectors for flanged outlet and plain pipe outlets, outlet blast gates, built-in outlet dampers, shaft closure plates, shaft seals, drains, inspection ports, shaft and bearing guards, belt guards, couplings, coupling guards, unitary bases, isolation bases, inertia bases, and vibration rails 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 RPM allowed for the particular construction type. Each wheel shall be statically and dynamically balanced to in accordance with ANSI/AMCA 4-9 Balance Quality and Vibration Levels for Fans to Fan Application Category BV-3, Balance Quality Grade G.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 Manufacturer shall guarantee the workmanship and materials for its Turbo Pressure Blowers for at least one (1) year from startup or eighteen (1) months from shipment, whichever occurs first. 32 TWIN CITY FAN - CATALOG 12

33 TYPICAL SPECIFICATIONS Model TBNS Fans shall be Model TBNS Turbo Pressure Blowers as manufactured by Twin City Fan & Blower, Minneapolis, Minnesota. PERFORMANCE Fans shall be tested and rated in accordance with industry accepted test codes and shall be guaranteed by the manufacturer to deliver rated published performance levels. HOUSING Fan housings shall be constructed of continuously welded heavy gauge steel. Sizes 14 through 2 shall be rotatable and reversible. A choice of inlet connections at no additional charge shall include an inlet venturi with screen, an inlet pipe assembly and a punched flange to ANSI /1. The outlet connection shall be flanged and punched to ANSI /1 with the option of a plain pipe assembly on Sizes WHEEL Model TBNS wheels shall be constructed of continuously welded heavy gauge steel or from a variety of special materials. Wheels shall be statically and dynamically balanced. The complete fan assembly shall be test balanced at the operating speed prior to shipment. SHAFT (ARR. 1 & ONLY) Shafts shall be AISI 10 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.43 times the maximum speed. BEARINGS (ARR 1, ONLY) Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, selfaligning, pillow block type and selected for a minimum average bearing life (AFBMA L-) in excess of 0,000 hours at the maximum fan RPM. FINISH AN COATING 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 inlet filters, inlet filters with hoods, inlet and outlet silencers, flexible connectors for flanged outlet and plain pipe outlets, outlet blast gates, built-in outlet dampers, shaft closure plates, shaft seals, drains, inspection ports, shaft and bearing guards, belt guards, couplings, coupling guards, unitary bases, isolation bases, inertia bases, and vibration rails 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 RPM allowed for the particular construction type. Each wheel shall be statically and dynamically balanced to in accordance with ANSI/AMCA 4-9 Balance Quality and Vibration Levels for Fans to Fan Application Category BV-3, Balance Quality Grade G.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 Manufacturer shall guarantee the workmanship and materials for its Turbo Pressure Blowers for at least one (1) year from startup or eighteen (1) months from shipment, whichever occurs first. 33

34 ALTERNATIVE PRESSURE BLOWERS Models HRO HRS HRO Wheel Sizes 19.75" to 1." wheel diameters Performance Airflow to 10,000 CFM Static pressures up to 1" w.g. See Catalog 10 for more information HRS Wheel Model TBR Sizes 10.75" to.19" wheel diameters Performance Airflow to 10, CFM Static pressures to 104" w.g. See Catalog 10 for more information Model TBA Sizes 11.19" to 32.0" wheel diameters Performance Airflow to 2,0 CFM Static pressures to " w.g. See Catalog 10 for more information 34 TWIN CITY FAN - CATALOG 12

35 ALTERNATIVE PRESSURE BLOWERS Models MBO MBR MBW Sizes 19.3" to 5.94" wheel diameters MBO Performance Airflow to 1,000 CFM Static pressures over 1" w.g. MBR Performance Airflow to 1,000 CFM Static pressures over 1" w.g. MBW Performance Airflow to,000 CFM Static pressures over 1" w.g. See Catalog 10 for more information MBO Wheel MBR Wheel MBW Wheel Model BCN Sizes 27" to 73" wheel diameters Performance Airflow to 75,000 CFM Static pressures to " w.g. See Catalog 14 for more information