MIXED FLOW FANS. Twin City Fan QSL (Standard) QSLR (Restaurant) QSLSH (Smoke and Heat)
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1 Twin City an INDUSTRIAL PROCESS AND COMMERCIAL VENTILATION SYSTEMS MIXED LOW ANS QSL (Standard) QSLR (Restaurant) QSLSH (Smoke and Heat) CATALOGUE M0 APRIL 0
2 MIXED LOW ANS Models QSL QSLR QSLSH QSL Mixed low an, Outlet View Benefits of Mixed low ans Twin City an Model QSL Mixed low an combines the benefits of axial flow and centrifugal flow fans. The QSL has the advantage of the compact design and straight-through airflow as well as the preferred acoustic characteristics and high pressure capability. QSL fans offer superior air and sound performance and the AMCA certified rating seal for air and sound. Energy Savings Mixed flow fans offer the economy of operation with a higher and broader efficiency range. The lower operating speed for a given performance provides longer and more reliable operation. Ultra Quiet The AMCA Certified Ratings for Air and Sound applies to both inlet and outlet sound power levels. The table below displays sound and static efficiency differences between performance points for a comparable tubular centrifugal fan and a vane axial fan. Performance Size Static Efficiency (%) Sound LwA (db) QSL TSL TCVA QSL TSL TCVA. m 0 Pa QSL m 0 Pa QSL m 70 Pa QSL m 0 Pa QSL Mixed low Models QSL Available in both direct drive and belt driven. The QSL mounts both vertically and horizontally, allowing for numerous applications with multiple mounting arrangements. Sizes range from - 70 and performance ranges from 0.6 to 7 m /sec. Model QSL is UL/CUL 70 listed. QSLR Model QSLR is similar to the QSL but is specifically designed for exhausting grease-laden air from kitchens, restaurants and cooking and dishwasher hoods. Model QSLR is UL/CUL 76 listed for the exhaust of grease-laden air. QSLSH Model QSLSH is specifically designed for smoke control applications. UL/CUL listed for smoke control systems for 0 C for 4 hours or C for minutes. Twin City an & Blower certifies that the Models QSL, QSLR and QSLSH Mixed low ans shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication and AMCA Publication and comply with the requirements of the AMCA Certified Ratings Program. See Catalogue 06 for sound ratings. Application Mixed flow fans are becoming a popular choice on many air supply, return, general and grease-laden exhaust and laboratory exhaust applications in the HVAC industry for both constant or variable air volume systems. The efficiency and sound characteristics of the mixed flow fans are often desired in buildings such as hospitals, libraries, theaters, and general offices. The Twin City an heavy-duty construction of QSL fans also make them suitable for many industrial applications handling ambient air. Applications involving fumes, spray booth exhaust, particulate, heavy moisture content, or high temperature should be discussed with the factory for possible product modifications. Model QSL is available with the UL/cUL 70 listing for electrical, ile No. E86. Model QSLR is UL/cUL 76 listed for the exhaust of grease-laden air as standard, ile No. MH-478. Model QSLSH is UL/CUL listed for Smoke Control Systems as standard, ile No. MH-9, 0 C for 4 hours and C for minutes. TWIN CITY AN - CATALOGUE M0
3 CONSTRUCTION EATURES Housings All fans are constructed of heavy-gauge steel and continuously welded for strength and rigidity. All QSL fans are provided with punched inlet and outlet flanges as standard. Impeller The QSL impeller is designed with true aerofoil (double surface - hollow) die-formed, continuously-welded blades for a stable air performance throughout the operating range. The impeller is statically and dynamically balanced prior to assembly and rechecked for balance after assembly by Twin City an & Blower. Belt Guard Totally enclosed, sealed belt guard is standard on Model QSL. Totally enclosed, non-sealed belt guard is standard on Models QSLR and QSLSH. Inner Cylinder The inner tube is rigidly constructed to support the shaft and bearings. The removable discharge cone provides full access to the shaft, bearings, and fan sheave. It is strongly recommended that an access door be provided in the ductwork adjacent to the discharge end of the fan for such service. Bearings Standard bearings are selected to exceed the L-0 life of 40,000 hours at the maximum operating speed. Drives V-belt drives or direct drive fans with motors and drives mounted by Twin City an Companies are test run as a complete assembly and rechecked for balance. QSL Impeller Extended Lube Lines Allow for ease of lubrication on all sizes. Motor Mounting Platform A heavy-duty motor mounting platform pivots to offer easy and positive adjustment of belt tension. The motor mounting platform is offered in eight standard locations to allow for motor accessibility and space requirements. Shaft Shaft diameter sized so that maximum operating speed does not exceed 70% of first critical speed. Straightening Vanes Straightening vanes convert tangential velocity pressure into useful static pressure, reducing turbulence and increasing efficiency. Extensive testing of various shapes and locations has resulted in the most efficient aerodynamic design of the straightening vanes. EASY ACCESS DESIGNS Clamshell Design Two clamshell style doors swing open wide to provide complete access to the interior of the fan for maintenance or cleaning without removal of ductwork. Heavy duty hinges, positive locking latches, and a full gasket provides a complete seal when doors are closed. An access door provides access to the bearings. Available on all fan sizes, typically vertical mount. Swing-out Design Provides full access to the impeller and inner casing. The entire impeller/shaft/bearing assembly is mounted on a large swing-out door. Ideal for systems requiring frequent cleaning without removal of ductwork. Swingout construction is available for vertical mounting only. Available on sizes 8 and larger.
4 MOUNTING CONIGURATIONS Horizontal Construction Horizontal construction is available in sizes to 70. Horizontal Base Mounted (HBM) Support legs are provided at each end of the fan for floor mounting. Horizontal Ceiling Hung (HCH) or duct mounted fans, four suspension clips are welded to the fan casing to allow ceiling suspension using rod hangers. Horizontal (HOR) or mounting configurations where support legs and suspension clips are not required. Vertical Construction Vertical construction is available in sizes to 4. Consult factory for larger sizes. loor or Ceiling Mounted (VUI/VUO/VDI/VDO) our vertical brackets are welded to either end of the fan housing. Bracket location is determined by airflow direction and support details (see drawing below). Roof Mounted (VRM) A curb cap provides weathertight seal for roof curb mounted fans. A discharge cap and weather cover are also available for the up-blast style roof ventilator. Vertical (VUN/VDN) or mounting configurations where support brackets are not required. Discharge Arrangements HCH Horizontal Ceiling Hung G H A E B D C HBM Horizontal Base Mounted G H A B C HOR Horizontal No Mounting Brackets NOTE: Horizontal motor positions shown from oulet end. AIRLOW AIRLOW AIRLOW AIRLOW AIRLOW VRM VUI VUO VDI VDO Vertical Roof Vertical Discharge Vertical Discharge Vertical Discharge Vertical Discharge Mounted Up, loor Mount Up,Ceiling Hung Down, Ceiling Hung Down, loor Mount Support Brackets Support Brackets Support Brackets Support Brackets On Inlet On Outlet On Inlet On Outlet Available Discharges by Model AIRLOW VUN Vertical Up No Brackets AIRLOW VDN Vertical Down No Brackets QSL QSLSH QSLR HBM HBM HBM HCH HCH HCH HOR HOR HOR VDI N/A N/A VDN N/A N/A VDO N/A N/A VUI VUI VUI VUN VUN VUN VUO VUO VUO VRM VRM VRM 4 TWIN CITY AN - CATALOGUE M0
5 OPTIONS/ACCESSORIES Belt Tube A belt tube encloses the belts and drive components, protecting them from the airstream. Support Legs Horizontal low or horizontal flow with floor mounting, support legs are welded to the fan flange with bolt holes aligned for connection of ductwork. Support Legs Vertical low or vertical flow with either floor or ceiling mounting, support legs are welded to the fan housing for four-point support. Suspension Clips or horizontal flow with ceiling mounting, four clips of formed angle are welded to the fan housing for suspension via tie rods to the ceiling support structure. Inlet and Outlet Screens Safety screening can be provided for installation in the fan inlet or fan outlet. Discharge Cap Discharge caps are designed for vertical, rooftop discharge with butterfly type dampers to seal out the weather when the fan is shut off. Curb Cap Attached to the fan s flange for curb mounting. Shaft Seal To limit the air entering the inner cylinder and avoid contact of airstream contaminants with the bearings and V-belt drive. Consists of a Teflon wear pad/plate and a rubber check-seal at the impeller end of the inner cylinder. Please note that a shaft seal does not make the inner cylinder gas tight. Weather Cover or outdoor installations, the weather cover completely encloses the motor and V-belt drive from the elements. Provided with slots for ventilation. Weather covers are available for either horizontal or vertical flow fans. Companion langes langes are rolled angle rings, drilled to match the fan s inlet or outlet flange. Spark-Resistant Construction Various grades of spark resistance are as dictated by AMCA: Types A, B, and C (for ATEX, please enquire). Spark resistant construction requires the addition of a sealed belt tube. Vibration Isolation Spring or rubber-in-shear isolators as an option. Spring isolators can be provided for floor mount or ceiling hung orientation. Seismic Certification Models QSL, QSLR and QSLSH have been seismically tested and certified with the California Office of Statewide Health, Planning and Development (OSHPD) per OSP Seismic certification is limited to certain product options and configurations. Support Legs, Horizontal Suspension Clips, Horizontal Curb Cap Inlet/Outlet Screens Support Legs, Vertical Discharge Cap Shaft Seal Companion lange
6 QSLR/QSLSH ANS QSLR Restaurant ans Twin City an Companies offers a specially modified version of the QSL fan designated as "QSLR" (Mixed low Restaurant Exhaust) for exhausting grease-laden air from kitchens, restaurants, cooking and dishwasher hoods. QSLR is available in sizes to 70. Model QSLR is CULUS 76 listed for exhaust of greaseladen air. QSLR is licensed to bear the AMCA certified ratings seal for sound and air performance. The QSLR fan is available in all configurations with the exception of vertical down (VDN, VDO and VDI). Standard Product eatures Belt guard, totally enclosed, ventilated (weather cover for VRM) Belt tube, sealed Two cleanout doors located apart (90 from motor) 0 mm drain located from motor (lowest point for horizontal) vertical at the funnel Cooling fins on impeller Housing sealed with Hi-Temp caulk QSLSH Smoke & Heat ans Twin City an Companies offers a specially modified version of the QSL fan designated as "QSLSH" (Mixed low Smoke and Heat Exhaust) for smoke control applications where temperatures can reach C. QSLSH is available in sizes to 70. Model QSLSH is CULUS 70 listed and CULUS listed for smoke control systems for 0 C for 4 hours or C for minutes. Vertical roof mounted configuration, with discharge cap, meets UL 79 Snow Load Test requirements for butterfly dampers. QSLSH is licensed to bear the AMCA certified ratings seal for sound and air performance. The QSLSH fan is available in all configurations with the exception of vertical down (VDN, VDO and VDI). Standard Product eatures Belt guard, ventilated (weather cover for VRM) Belt tube, sealed Two-groove drive minimum w/.0 S Cooling fins on impeller Stack cap with fusible link (for VRM) Continuously welded housing DISCHARGE CAP (OPTIONAL) AIR LOW () CLEANOUT DOORS O 90 ROM MOTOR O ROM EACH OTHER (STANDARD ON QSLR ONLY) WEATHER COVER (STANDARD) GREASE DRAIN O ROM MOTOR (STANDARD ON QSLR ONLY) CURB CAP (OPTIONAL) GREASE BOX (OPTIONAL ON QSLR ONLY) CURB BASE (OPTIONAL) 6 TWIN CITY AN - CATALOGUE M0
7 OPTIONS & ARRANGEMENTS Insulated Enclosure To further reduce case radiated sound and motor noise, an optional Insulated Enclosure is available. The enclosure consists of a box with 0 mm thick, dual density fiberglass. Consult the factory for dimensions and sound reduction values. AIR LOW Arrangement 4 (Direct Drive) Where space constraints require the use of a complete "in line" fan or the desire is for a simple, dependable fan with minimum maintenance requirements, the direct drive Arrangement 4 QSL is available. Constructed with the fan impeller mounted directly on the motor shaft, this fan provides premium efficiency with minimal obstructions in the airstream. The use of a variable frequency drive (VD) may be necessary for some applications. AIR LOW Arrangement Where space is a premium, the QSL arrangement is available to shorten the overall fan length. The table on the right shows the overall savings in length versus an arrangement 9 fan. AN SIZE ARR. OVERALL LENGTH (TA) LENGTH SAVINGS (mm) AIR LOW 7
8 ENGINEERING DATA Table. Maximum RPM, Impeller Weights, and WR (moment of inertia in kg-m ) CLASS I CLASS II AN MAX. WEIGHT WR SIZE MAX. WEIGHT WR RPM kg (kg-m ) RPM kg (kg-m ) Table. Bare an Weights (kg) AN SIZE ARRANGEMENT 9 CLASS I CLASS II Table. Temperature and Altitude Density Ratios AIR TEMP C ALTITUDE IN METRES ABOVE SEA LEVEL BAROMETRIC PRESSURE IN kpa Table 4. Bearing Specifications CLASS I CLASS II AN SHAT SHAT SIZE HORIZ. VERT. HORIZ. VERT. DIA. mm.) DIA. (mm.) SDB SDB 0 SDB SDB 6 SDB SDB 8 SDB SDB 8 SDB SDB 8 HDB HDB 00 0 SDB SDB 8 HDB HDB 0 SDB SDB 8 HDB HDB 4 8 SDB SDB 4 HDB HDB 70 8 SDB SDB 4 HDB RB 00 8 HDB HDB 0 HDB RB 0 4 HDB HDB HDB RB 6 0 HDB HDB RB RB 40 0 HDB RB RB RB 44 0 HDB RB 6 RB RB 490 HDB RB 6 RB RB 4 HDB RB 70 RB RB 0 70 HDB 7 RB 6 7 HDB 90 RB 70 7 HDB 00 RB Table. Minimum m /sec Required to Open Discharge Cap AN SIZE m /sec NOTES:. BEARINGS CODES: SDB Standard-Duty Ball such as Dodge SCAH or SK SY Series HDB Heavy-Duty Ball such as Dodge SCMAH or SK SYM Series RB Roller Bearing such as Dodge S000 or SK SYR Series. Standard bearings are selected to exceed L-0 life of 40,000 hours at the maximum operating speed. Twin City an 8 TWIN CITY AN - CATALOGUE M0
9 PERORMANCE CURVES QSL 0 00 RPM, LwA 7,00 RPM 00 RPM 8 LwA, RPM LwA.kW P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 40 RPM LwA 6 LwA 7 LwA kw.kw kw.kw kw 0.kW 0. kw RPM 64% Eff. LwA 68% Pk. Eff. 0.8kW 0.kW % Eff low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard
10 PERORMANCE CURVES 7,000 QSL 6 RPM,00 00 RPM 8 LwA 90 LwA, RPM 0 LwA 0 P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) 00 9 RPM LwA 40 RPM 6 LwA 7 LwA kw.kw kw.kw kw RPM 0.kW % Eff. 68% Pk. Eff. 0.kW kw 0.8kW 0. 6% Eff low (m³ /sec) anvelocity Pressure (Pa) 7 - low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. 0 TWIN CITY AN - CATALOGUE M0
11 PERORMANCE CURVES QSL 8 0 7,000 RPM 00 RPM 90 LwA,00, RPM 8 LwA 0 P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM RPM 64% Eff. 68% Pk. Eff. 9 RPM 6 LwA LwA LwA 40 RPM LwA 7 LwA.kW kw.kw kw 0.kW kw 0.kW 0.8kW 7.kW.kW kw 0. 6% Eff low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0.
12 PERORMANCE CURVES QSL 00 0, RPM 7, RPM,000 8 LwA 90 LwA 0 40 RPM P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 9 RPM 6 LwA 7 LwA LwA 7.kW.kW kw.kw kw.kw 0. LwA kw 00 0.kW RPM 64% Eff. LwA 68% Pk. Eff. 0.8kW 0.kW kw 40 6% Eff low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. TWIN CITY AN - CATALOGUE M0
13 PERORMANCE CURVES 7,000,00 QSL 000 RPM 8 LwA, RPM LwA 7.kW 0 P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM 9 RPM 6 LwA LwA 7 LwA kw.kw kw.kw kw.kw 00 RPM 00 0.kW 0. 69% Eff. 74% Pk. Eff. kw 0.kW % Eff. 0.8kW low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0.
14 PERORMANCE CURVES QSL 4 0, RPM 7,00 90 LwA, RPM 8 LwA P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 9 RPM 6 LwA 7 LwA LwA kw.kw kw.kw 7.kW kw LwA.kW RPM 00 69% Eff. kw 0.kW 0. 7% Pk. Eff. kw 67% Eff. 0.kW low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. 4 TWIN CITY AN - CATALOGUE M0
15 PERORMANCE CURVES,00 QSL RPM,000 8 LwA 0 7.kW 0 9 RPM LwA P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 70 RPM 6 LwA 7 LwA kw.kw kw.kw 0. 69% Eff..kW % Pk. Eff. kw 0.kW kw low (m³ /sec) 66% Eff anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0.
16 PERORMANCE CURVES,000 QSL 00 7,00 40 RPM 90 LwA, RPM 8 LwA 0 LwA kw P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM LwA 70 RPM LwA 6 LwA 7 LwA 7.kW.kW kw.kw kw.kw kw RPM 0.kW % Eff. 7% Pk. Eff. kw 0.kW 0.8kW 0. 66% Eff low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. 6 TWIN CITY AN - CATALOGUE M0
17 PERORMANCE CURVES 7,000,00 QSL 0 40 RPM 90 LwA, RPM 8 LwA 8.kW 0 LwA kw P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) 00 6 LwA LwA 00 RPM 70 RPM 7 LwA kw 7.kW.kW kw.kw kw 00.kW RPM 69% Eff. LwA 7% Pk. Eff. kw 0.kW kw 40 66% Eff. 0.kW low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG 7. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard
18 PERORMANCE CURVES QSL RPM, LwA,00 7kW 90 LwA,000 9 RPM 0 8 LwA 0kW P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 70 RPM 6 LwA 7 LwA LwA kw 8.kW kw kw 7.kW.kW kw 0. LwA.kW RPM 7% Eff. LwA 76% Pk. Eff. kw.kw kw % Eff. kw 0.kW low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. 8 TWIN CITY AN - CATALOGUE M0
19 PERORMANCE CURVES,00 QSL 40 9 RPM, RPM 8 LwA 0 kw P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM 00 RPM 6 LwA LwA 7 LwA kw.kw 7.kW kw % Eff. 76% Pk. Eff. kw.kw.kw 0. 6% Eff. kw LwA 40 0.kW low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard
20 PERORMANCE CURVES,000 QSL 44 7,00 9 RPM 90 LwA, RPM 8 LwA 0 P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM 6 LwA LwA 00 RPM 7 LwA LwA kw 8.kW kw kw 7.kW.kW kw.kw RPM 7% Eff. 76% Pk. Eff. LwA kw.kw kw 0.kW 0. 6% Eff. kw 0.kW low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. 0 TWIN CITY AN - CATALOGUE M0
21 PERORMANCE CURVES 7,000 QSL RPM,00 9 LwA, RPM 90 LwA 0 8 LwA 0 00 RPM LwA 7kW 0kW P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM 6 LwA LwA 7 LwA kw 8.kW kw kw 7.kW.kW 00 kw RPM 7% Eff. LwA 76% Pk. Eff..kW kw.kw 40 6% Eff. 0.kW kw low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0.
22 PERORMANCE CURVES QSL RPM,000 7,00 9 LwA 70 RPM 90 LwA 7kW,000 0 P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 00 RPM 00 RPM kw 7.kW 7% Eff. 76% Pk. Eff. LwA 6 LwA LwA 7 LwA 8 LwA.kW kw.kw kw kw 7kW 0kW kw 8.kW kw % Eff..kW kw low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. TWIN CITY AN - CATALOGUE M0
23 PERORMANCE CURVES,000 QSL 0 7,00 70 RPM, LwA kw 0 00 RPM 8 LwA 0 P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM 00 RPM LwA 6 LwA 7 LwA LwA 7kW 0kW kw 8.kW kw kw 7.kW.kW RPM 40 7% Eff. 76% Pk. Eff. LwA kw.kw kw.kw 0. 6% Eff. 0.kW kw low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0.
24 PERORMANCE CURVES 7,000 QSL 6 70 RPM,00 9 LwA 90kW, RPM 90 LwA 0 0 7kW LwA kw P - an Total Pressure (in W.G.) 0. P - an Total Pressure (Pa) RPM 00 RPM 6 LwA 7 LwA 7kW 0kW kw 8.kW kw kw 7.kW 00 LwA 8 LwA.kW RPM 7% Eff. LwA 76% Pk. Eff. kw.kw 40 6% Eff. kw.kw low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0. 4 TWIN CITY AN - CATALOGUE M0
25 PERORMANCE CURVES QSL RPM 7,000,00 9 LwA 00 RPM, LwA kw P - an Total Pressure (in W.G.) P - an Total Pressure (Pa) RPM 00 RPM 6 LwA 7 LwA LwA 8 LwA 0kW 90kW 7kW kw 7kW 0kW kw 8.kW kw kw RPM 7% Eff. LwA 76% Pk. Eff. 7.kW.kW kw % Eff. kw.kw low (m³ /sec) anvelocity Pressure (Pa) low (CM) (in Thousands) an Efficiency Grade = EG. Performance certified is for Installation Type B & D: ree or ducted inlet, ducted outlet.. Power rating (kw) does not include transmission losses.. Performance ratings do not include the effects of appurtenances (accessories). 4. The sound power level ratings shown are in decibels, referred to 0 E- watts calculated per AMCA Standard 0.. Values shown are for inlet LwiA sound power levels for Installation Type B: ree inlet, ducted outlet. 7. The A-weighted sound ratings shown have been calculated per AMCA Standard 0.
26 DIMENSIONAL DATA Horizontal SEALED BELT GUARD STD EXCEPT OR SPARK RESISTANT CONSTRUCTION MOTOR "R" MAX. RAME LOC. A AIR LOW INSIDE DUCT DIA. B.C. O.D. LANGE CA CB CC ROTATION MC MAX "TH" HSG. GAGE TA "SD" DIA. SHAT "NH" NUMBER O "DH" DIA. HOLES ON "CB" DIA. B.C. EQUALLY SPACED STRADDLING CENTER LINE OUTLET END TYPE "QSL" HORIZONTAL DISCHARGE D BE OUR "BH" DIA. MTG. HOLES B HBM SUPPORT LEGS 8. M G HORIZONTAL BASE MOUNTED M BB BD OUR "BM" DIA. CLIP HOLES HCH SUSPENSION CLIPS BN HORIZONTAL CEILING HUNG G H A E B D MOTOR LOCATION VIEWED ROM OUTLET END C SIZE BB BD BE B BH BM BN BT CA CB CC D DH R G M MC NH SD CL I CL II TA TH M M L L L L L L L M M M M M M M M QSL-AC0000E QSLR-AC0067A QSLSH-AC00666B DIMENSIONS ARE SUBJECT TO CHANGE. CERTIIED DRAWINGS AVAILABLE ON REQUEST. 6 TWIN CITY AN - CATALOGUE M0
27 DIMENSIONAL DATA Vertical NOTE "SD" DIA. SHAT CC O.D. LANGE CB DIA. B.C. CA INSIDE DUCT BT BELT TUBE WIDTH BL (4) 4.4 DIA. MTG. HOLES ø TA NOTE "TH" HOUSING GAGE SUPPORT LEGS OUR PLACES (NOTE ) AIR LOW MOTOR "R" MAX. RAME ROTATION "NH" NUMBER O "DH" DIA. HOLES ON "CB" DIA. B.C. EQUALLY SPACED STRADDLING CENTER LINE MC MAX 4ø VIEWED ROM OUTLET END TYPE "QSL" VERTICAL UP DISCHARGE WITH LOOR MOUNT SUPPORT LEGS AIR LOW AIR LOW AIR LOW AIR LOW NOTES:. One locking collar and impeller hub cap included to prevent shifting of components.. Support legs shown are provided as an accessory. DISCHARGE UP DISCHARGE UP DISCH. DOWN VUI LOOR MOUNT VUO CEILING HUNG VDI CEILING HUNG VDO DISCH. DOWN LOOR MOUNT SIZE BL BT CA CB CC DH R MC NH SD CLI CLII TA TH M M L L L L L L L M M M M M QSL-AC00004 QSLR-AC0067B QSLSH-AC00667C DIMENSIONS ARE SUBJECT TO CHANGE. CERTIIED DRAWINGS AVAILABLE ON REQUEST. 7
28 DIMENSIONAL DATA Vertical Roof "NH" NUMBER O "DH" DIA. HOLES ON "CB" DIA. B.C. EQUALLY SPACED STRADDLING CENTER LINE "A" O.D. DISCH. CAP CG "A" DISCHARGE CAP O.D. LANGE CC INSIDE DUCT CA CH CK TA NOTE AIR LOW "SD" DIA. SHAT "BT" BELT TUBE WIDTH.4 NOTE VIEW "A" - "A" W/O DISCHARGE CAP MC MAX CJ "TH" HOUSING GAGE MOTOR "R" MAX. RAME CURB CAP CD O.D. HSG CE INSIDE SQ. TYPE "QSL" VERTICAL DISCHARGE WITH DISCHARGE CAP AND CURB CAP NOTES:. One locking collar and impeller hub cap included to prevent shifting of components.. Discharge cap and curb cap are optional accessories. SIZE BL BT CA CB CC CD CE CG CH CJ CK DH R MC NH SD CLI CLII TA TH M M L L L L L L L M M M M M QSL-AC00067B QSLR-AC0067B QSLSH-AC00674B DIMENSIONS ARE SUBJECT TO CHANGE. CERTIIED DRAWINGS AVAILABLE ON REQUEST. 8 TWIN CITY AN - CATALOGUE M0
29 TYPICAL SPECIICATIONS Model QSL ans shall be Type QSL (standard mixed flow) of the non-overloading design, as manufactured by Twin City an Companies. PERORMANCE Performance ratings shall conform to AMCA Standard 0 (fan efficiency grade), (air performance) and (sound performance). ans shall be tested in accordance with ANSI/AMCA Standard 0 (air performance) and 00 (sound performance) in an AMCA accredited laboratory. ans shall be licensed to bear the AMCA certified ratings seal for both sound and air, and fan efficiency grade (EG). Sound certification shall apply to both inlet and outlet sound power levels. ans shall be designed for maximum efficiency. ans shall have a sharply rising pressure characteristic extending through the operating range and continuing to rise well beyond the efficiency peak to assure quiet and stable operation under all conditions. Power characteristics shall be truly self-limiting and shall reach a peak in the normal selection area. Model QSL shall be available UL 70 listed. ans shall bear a permanently attached nameplate displaying model and serial number of the unit for future identification. HOUSING Housings shall be cylindrical and welded steel throughout. Inlets shall be fully streamlined. Housings shall be suitably braced to prevent vibration or pulsation. Totally enclosed belt guard shall enclose motor sheave and V-belt drives. Punched inlet and outlet flanges shall be equipped for duct mounting. Extended lube lines shall be provided for ease of lubrication. Model QSL shall include bolted access door for inspection and maintenance of impeller. IMPELLER an impellers shall have die-formed hollow aerofoil blades designed for maximum efficiency, and quiet and stable operation. Blades shall be continuously welded to the back plate and impeller cone. Impellers shall be statically and dynamically balanced and the complete fan assembly including motor and drive shall be test balanced at or near the operating speed at the factory prior to shipment. SHAT Shafts shall be AISI 040 or 04 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least.4 times the maximum speed. BEARINGS Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block type and selected for a minimum L-0 life of 40,000 hours at the maximum fan RPM. Bearings shall be equipped with extended lubrication lines with grease fittings outside of the fan housing. DRIVE Motor sheaves shall be cast iron, variable pitch on applications 7. kw and smaller, and fixed pitch on kw and larger. INLET VANES Inlet vanes, where specified, shall be of the nested design. Inlet vanes shall be designed for economical, stable, and efficient air volume control at partial load conditions. INISH AND COATING The entire fan assembly, excluding the shaft, shall be thoroughly degreased and de-burred 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. ACTORY RUN TEST All fans with motors and drives mounted by Twin City an & Blower shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Each impeller shall be statically and dynamically balanced in accordance with ANSI/AMCA Balance Quality and Vibration Levels for ans to an Application Category BV-, Balance Quality Grade G6.. 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 QSL Mixed low ans for at least one () year from startup or eighteen (8) months from shipment, whichever occurs first. 9
30 TYPICAL SPECIICATIONS Model QSLR ans shall be Type QSLR (restaurant) of the non-overloading design, as manufactured by Twin City an Companies. PERORMANCE Performance ratings shall conform to AMCA Standard 0 (fan efficiency grade), (air performance) and (sound performance). ans shall be tested in accordance with ANSI/AMCA Standard 0 (air performance) and 00 (sound performance) in an AMCA accredited laboratory. ans shall be licensed to bear the AMCA certified ratings seal for both sound and air, and fan efficiency grade (EG). Sound certification shall apply to both inlet and outlet sound power levels. ans shall be designed for maximum efficiency. ans shall have a sharply rising pressure characteristic extending through the operating range and continuing to rise well beyond the efficiency peak to assure quiet and stable operation under all conditions. Power characteristics shall be truly self-limiting and shall reach a peak in the normal selection area. Model QSLR shall be UL 76 listed for the exhaust of grease-laden air. ans shall bear a permanently attached nameplate displaying model and serial number of the unit for future identification. HOUSING Housings shall be cylindrical and welded steel throughout. Inlets shall be fully streamlined. Housings shall be suitably braced to prevent vibration or pulsation. Totally enclosed belt guard shall enclose motor sheave and V-belt drives. Punched inlet and outlet flanges shall be equipped for duct mounting. Extended lube lines shall be provided for ease of lubrication. Model QSLR shall include a belt tube, impeller cleanout doors (located apart) for inspection and maintenance of the impeller and a " drain. IMPELLER an impellers shall have die-formed hollow aerofoil blades designed for maximum efficiency, and quiet and stable operation. Blades shall be continuously welded to the back plate and impeller cone. Impellers shall be statically and dynamically balanced and the complete fan assembly including motor and drive shall be test balanced at or near the operating speed at the factory prior to shipment. Impellers on model QSLR shall have cooling fins to draw cool air over shaft and bearings. SHAT Shafts shall be AISI 040 or 04 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least.4 times the maximum speed. BEARINGS Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block type and selected for a minimum L-0 life of 40,000 hours at the maximum fan RPM. Bearings shall be equipped with extended lubrication lines with grease fittings outside of the fan housing. DRIVE Motor sheaves shall be cast iron, variable pitch on applications 7. kw and smaller, and fixed pitch on kw and larger. INLET VANES Inlet vanes, where specified, shall be of the nested design. Inlet vanes shall be designed for economical, stable, and efficient air volume control at partial load conditions. INISH AND COATING The entire fan assembly, excluding the shaft, shall be thoroughly degreased and de-burred 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. ACTORY RUN TEST All fans with motors and drives mounted by Twin City an & Blower shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Each impeller shall be statically and dynamically balanced in accordance with ANSI/AMCA Balance Quality and Vibration Levels for ans to an Application Category BV-, Balance Quality Grade G6.. 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 QSLR Mixed low ans for at least one () year from startup or eighteen (8) months from shipment, whichever occurs first. 0 TWIN CITY AN - CATALOGUE M0
31 TYPICAL SPECIICATIONS Model QSLSH ans shall be Type QSLSH (smoke and heat) of the non-overloading design, as manufactured by Twin City an Companies. PERORMANCE Performance ratings shall conform to AMCA Standard 0 (fan efficiency grade), (air performance) and (sound performance). ans shall be tested in accordance with ANSI/AMCA Standard 0 (air performance) and 00 (sound performance) in an AMCA accredited laboratory. ans shall be licensed to bear the AMCA certified ratings seal for both sound and air, and fan efficiency grade (EG). Sound certification shall apply to both inlet and outlet sound power levels. ans shall be designed for maximum efficiency. ans shall have a sharply rising pressure characteristic extending through the operating range and continuing to rise well beyond the efficiency peak to assure quiet and stable operation under all conditions. Power characteristics shall be truly self-limiting and shall reach a peak in the normal selection area. Model QSLSH shall be UL listed for Smoke Control Systems ((0 C for 4 hours and C for minutes). ans shall bear a permanently attached nameplate displaying model and serial number of the unit for future identification. HOUSING Housings shall be cylindrical and welded steel throughout. Inlets shall be fully streamlined. Housings shall be suitably braced to prevent vibration or pulsation. Totally enclosed belt guard shall enclose motor sheave and V-belt drives. Punched inlet and outlet flanges shall be equipped for duct mounting. Extended lube lines shall be provided for ease of lubrication. Model QSLSH shall include a belt tube for the protection of belts and drive components from the airstream and bolted access door. IMPELLER an impellers shall have die-formed hollow aerofoil blades designed for maximum efficiency, and quiet and stable operation. Blades shall be continuously welded to the back plate and impeller cone. Impellers shall be statically and dynamically balanced and the complete fan assembly including motor and drive shall be test balanced at or near the operating speed at the factory prior to shipment. Impellers on model and QSLSH shall have cooling fins to draw cool air over shaft and bearings. SHAT Shafts shall be AISI 040 or 04 hot rolled steel, accurately turned, ground, polished, and ring gauged for accuracy. Shafts shall be sized for the first critical speed of at least.4 times the maximum speed. BEARINGS Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block type and selected for a minimum L-0 life of 40,000 hours at the maximum fan RPM. Bearings shall be equipped with extended lubrication lines with grease fittings outside of the fan housing. DRIVE Motor sheaves shall be cast iron, variable pitch on applications 7. kw and smaller, and fixed pitch on kw and larger. Model QSLSH shall be equipped with a two-groove drive minimum. INLET VANES Inlet vanes, where specified, shall be of the nested design. Inlet vanes shall be designed for economical, stable, and efficient air volume control at partial load conditions. INISH AND COATING The entire fan assembly, excluding the shaft, shall be thoroughly degreased and de-burred 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. ACTORY RUN TEST All fans with motors and drives mounted by Twin City an & Blower shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Each impeller shall be statically and dynamically balanced in accordance with ANSI/AMCA Balance Quality and Vibration Levels for ans to an Application Category BV-, Balance Quality Grade G6.. 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 QSLSH Mixed low ans for at least one () year from startup or eighteen (8) months from shipment, whichever occurs first.
32 INDUSTRIAL PROCESS AND COMMERCIAL VENTILATION SYSTEMS CENTRIUGAL ANS UTILITY SETS PLENUM & PLUG ANS INLINE CENTRIUGAL ANS MIXED LOW ANS TUBEAXIAL & VANEAXIAL ANS PROPELLER WALL ANS PROPELLER ROO VENTILATORS CENTRIUGAL ROO & WALL EXHAUSTERS CEILING VENTILATORS GRAVITY VENTILATORS DUCT BLOWERS RADIAL BLADED ANS RADIAL TIP ANS HIGH EICIENCY INDUSTRIAL ANS PRESSURE BLOWERS LABORATORY EXHAUST ANS ILTERED SUPPLY ANS MANCOOLERS IBERGLASS ANS CUSTOM ANS Twin City an TWIN CITY AN & BLOWER 99 TRENTON LANE N MINNEAPOLIS, MN 44 PHONE: AX: Twin City an Companies, Ltd., Minneapolis, MN. All rights reserved. Catalog illustrations cover the general appearance of Twin City an & Blower products at the time of publication and we reserve the right to make changes in design and construction at any time without notice.
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