Louvers and Vents Specification



SECTION 08 91 00LOUVERS AND VENTSPART 1 - GENERAL1.1SUMMARYA.Section Includes:1.Metal wall louvers and screens exposed to view in finish work, including:a.Exterior metal louvers.b.Louvers at locations where HVAC ductwork terminates at exterior walls.c.Other exposed exterior and interior louvers indicated on drawings.B.Related Requirements:1.Section 07910 - Joint Sealers.2.Section 08710 – Door Hardware for door louver section.3.Division 15 – Mechanical.4.Division 16 – Electrical.1.2REFERENCESA.Air Movement and Control Association International Inc. (AMCA):1.AMCA Standard 500 Test Method for Louvers, Dampers, and Shutters.2.AMCA Publication 261 Directory of Licensed Products, current edition.B.American Society for Testing and Materials (ASTM):1.ASTM A526 Standard Specification for Steel Sheet, Zinc-coated (galvanized) steel.2.ASTM B209 Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate.3.ASTM B221 Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes.1.3COORDINATIONA.Extent: Extent of exterior louvers is indicated on Drawings. Coordinate requirements, quantities, and sizes with mechanical drawings. Provide louvers indicated on mechanical Drawings as part of Work within this Section.1.ply with Division 01 requirements.B.Product Data: Manufacturer's specifications and technical data including the following.1.Detailed specification of construction and fabrication.2.Manufacturer's installation instructions.3.Submit Product Data on the following items:a.Each louver type.b.Each type of louver installation.C.Shop Drawings: Indicate dimensions, description of materials and finishes, general construction, specific modifications, component connections, anchorage methods, relationship to adjoining work, hardware, and installation procedures.1.Relationship to adjoining work.2.Submit Shop Drawings on the following items:a.Each louver type.b.Each louver opening.3.Signed by Professional Structural Engineer registered in the State in which the Project is located.a.Certifying compliance with structural requirements.b.Do not submit design calculations.D.Samples: Submit samples for color selection of louver finishes.E.Quality Control: 1.Certified test reports indicating compliance with specified performance requirements.F.Manufacturer’s Instructions: Manufacturer’s installation instructions.1.4QUALITY ASSURANCEA.Product/Material Qualifications: Provide AMCA certified rating and seal indicating compliance with specified air flow requirements.B.Certifications: Perform structural design work of this Section under the direct supervision of a Professional Structural Engineer registered in the State in which the Project is located.1.5DELIVERY, STORAGE, AND HANDLINGA.Deliver materials to Project site ready use. Fabricate in as large sections and assemblies as practical.B.Exercise proper care in handling of Work so as not to injure finished surfaces. Protect Work from damage after it is in place.C.Store materials under cover in a dry and clean location off the ground. Remove materials that are damaged or otherwise not suitable for installation from Project site and replace with acceptable materials at no additional cost to Owner.1.6WARRANTYA.Provide manufacturer's written warranty.B.Warrant materials and fabrication against defects after completion and final acceptance of Work.1.Repair defects, or replace with new materials, faulty materials or fabrication developed during warranty period at no expense to Owner.PART 2 - PRODUCTS2.1MANUFACTURERSA.Subject to compliance with requirements, provide products from the following manufacturer:Nystrom, Inc.9300 73rd Avenue NorthMinneapolis, MN 55428PH: 800.547.2635FX: 800.317.2.2MATERIALSA.Aluminum Sheet: ASTM B209 Alloy 3003 or 5005 with temper as required for forming, or as otherwise recommended by metal producer to provide required finish.B.Aluminum Extrusions: ASTM B221, Alloy 6063-T5.C.Galvanized, Bonderized Coating: ASTM A526 galvanized to G90 zinc coating.D.Fastening: Provide stainless steel screws and fasteners for aluminum louvers and zinc-coated or stainless steel screws and fasteners for steel louvers. Provide other accessories as required for complete and proper installation.2.3HURRICANE SERIES BLADE LOUVERSA.MODEL LSA6D38-DC1.Louver Depth: 6 inch2.Frame Thickness: 0.125 inch extruded aluminum type 6063-T53.Blade Angle: 38 degrees4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 4.25 inch6.Performance Requirements: Meets standards PA-201, 202, and 203 for Miami-Dade County hurricane louver certification. As follows determined by testing 48 inch by 48 inch units per AMCA 500.a.Free Area: 57 percentb.Static Pressure Loss:Not more than .23 inch water gage at an airflow rate of1250 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1250 FPM free area velocity.B.MODEL LSA6D38-FL1.Louver Depth: 6 inch2.Frame Thickness: 0.125 inch extruded aluminum type 6063-T53.Blade Angle: 38 degrees4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 4.25 inch6.Performance Requirements: Tested to meet and exceed the Florida Building Code. As follows determined by testing 48 inch by 48 inch units per AMCA 500.a.Free Area: 57 percentb.Static Pressure Loss:Not more than .23 inch water gage at an airflow rate of1250 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1250 FPM free area velocity2.4WIND DRIVEN RAIN SERIES BLADESEE CATALOG FOR OTHER AVAILABLE DEPTHS AND CONFIGURATIONSA.MODEL LSA4CDD1.Louver Depth: 4 inch2.Frame Thickness: 0.81 inch extruded aluminum type 6063-T53.Blade Angle: N/A4.Blade Thickness: 0.063 inch extruded aluminum type 6063-T55.Blade Spacing: 1.6256.Performance Requirements: As follows determined by testing 48 by 48 inch units per AMCA 500.a.Free Area: 40 percentb.Static Pressure Loss:Not more than .23 inch water gage at an airflow rate of1250 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1250 FPM+ free area velocity.d.Tested wind speed 50 mph.B.MODEL LSA5CDD1.Louver Depth: 5 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Angle: N/A4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 2 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 44 percentb.Static Pressure Loss:Not more than 0.41 inch water gage at an airflow rate of1723 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of plus 1250 FPM+ free area velocity.d. Tested wind speed 50mph.C.MODEL LSA7CDD1.Louver Depth: 7 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Angle: N/A4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 49 percentb.Static Pressure Loss:Not more than 0.41 inch water gage at an airflow rate of1723 FPM free area intake velocity.c. Tested wind speed 29mph.D.MODEL LSA8CDD1.Louver Depth: 8 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Angle: Not applicable.4.Blade Thickness: 0.060 inch extruded aluminum type 6063-T55.Blade Spacing: 2.75 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 46 percentb.Static Pressure Loss:Not more than .30 inch water gage at an airflow rate of735 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 735 FPM free area velocity.d.Tested wind speed 29mph.2.5ACOUSTICAL BLADE LOUVERSSEE CATALOG FOR OTHER AVAILABLE DEPTHS AND CONFIGURATIONSA.MODEL 4ACC1.Louver Depth: 4 inch2.Frame Thickness: 0.100 inch extruded aluminum type 6063-T53.Blade Type: 45 degree angle acoustical blade4.Blade Thickness: 0.080 inch extruded aluminum type 6063-T56.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500. AMCA water and air certified.a.Free Area: 29 percentb.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 703 FPM free area velocity.B.MODEL 6ACC1.Louver Depth: 6 inch2.Frame Thickness: 0.100 inch extruded aluminum type 6063-T53.Blade Type: 45 degree angle acoustical blade4.Blade Thickness: 0.080 inch extruded aluminum type 6063-T56.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500. AMCA water and air certified.a.Free Area: 30 percentb.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 872 FPM free area velocity.C.MODEL 8ACC1.Louver Depth: 8 inch2.Frame Thickness: 0.100 inch extruded aluminum type 6063-T53.Blade Type: 45 degree angle acoustical blade4.Blade Thickness: 0.080 inch extruded aluminum type 6063-T56.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500. AMCA water and air certified.a.Free Area: 26 percentb.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 838 FPM free area velocity.D.MODEL 12ACC1.Louver Depth: 12 inch2.Frame Thickness: 0.100 inch extruded aluminum type 6063-T53.Blade Type: 45 degree angle acoustical blade4.Blade Thickness: 0.080 inch extruded aluminum type 6063-T56.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500. AMCA water and air certified.a.Free Area: 22 percentb.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1054 FPM free area velocity.2.6DRAINABLE BLADE LOUVERS SEE CATALOG FOR OTHER AVAILABLE DEPTHS AND CONFIGURATIONSA.MODEL LSA2D451.Louver Depth: 2 inch2.Frame Thickness: 0.062 inch extruded aluminum type 6063-T53.Blade Type: Drainable blades at 45 degree angle4.Blade Thickness: 0.062 inch extruded aluminum type 6063-T55.Blade Spacing: 2.444 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 38 percentb.Static Pressure Loss:Not more than .18 inch water gage at an airflow rate of1197 FPM free are intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1197 FPM free area velocity.B.MODEL LSA4D381.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Drainable blades at 38 degree angle4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 5.09 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 54 percentb.Static Pressure Loss:Not more than .11 inch water gage at an airflow rate of873 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 873 FPM free area velocity.C.MODEL LSA6D381.Louver Depth: 6 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Drainable blades at 38/45 degree angle4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 5.91 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 57 percentb.Static Pressure Loss:Not more than .13 inch water gage at an airflow rate of1023 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 oz. per square ft. of free area at an airflow rate of 1023 FPM free area velocity.D.MODEL LSA4D451.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Drainable blades at 45 degree angle4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 4.5 inch (112.5 mm)6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 53 percentb.Static Pressure Loss:Not more than .16 inch water gage at an airflow rate of1176 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1075 FPM free area velocity.E.MODEL LSG4D381.Louver Depth: 4 inch2.Frame Thickness: 16 gage steel3.Blade Type: Drainable blades at 38 degree angle4.Blade Thickness: 18 gage steel5.Blade Spacing: 5.09 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 52 percentb.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 961 FPM free area velocity.F.MODEL LSG6D381.Louver Depth: 6 inch2.Frame Thickness: 16 gage steel3.Blade Type: Drainable blades at 38 degree angle4.Blade Thickness: 18 gage steel5.Blade Spacing: 5.09 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: 54 percentb.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 896 FPM free area velocity.2.7STORM BLADE LOUVERS SEE CATALOG FOR OTHER AVAILABLE DEPTHS AND CONFIGURATIONSA.MODEL LSA2S451.Louver Depth: 2 inch2.Frame Thickness: 0.062 inch3.Blade Type: Weather blades at 45 degrees4.Blade Thickness: 0.062 inch5.Blade Spacing: 2 inch6.Performance Requirements: Free area of not less than 37.8 percentB.MODEL LSA4YSP1.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Stationary storm blades positioned in an inverted “Y”4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 4 inch6.Performance Requirements: Free area of not less than 29 percentC.MODEL LSA4S381.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Stationary storm blades at 38 degrees4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 5.094 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 52 percentb.Static Pressure Loss:Not more than .10 inch water gage at an airflow rate of696 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 696 FPM free area velocity.D.MODEL LSA4S451.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Stationary storm blades at 45 degrees4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 4.75 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 53 percentb.Static Pressure Loss:Not more than .10 inch water gage at an airflow rate of871 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 871 FPM free area velocity.E.MODEL LSA6S451.Louver Depth: 6 inch2.Frame Thickness: 0.125 inch extruded aluminum type 6063-T53.Blade Type: Stationary storm blades at 45 degrees4.Blade Thickness: 0.90 inch extruded aluminum type 6063-T55.Blade Spacing: 6 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 48 percentb.Static Pressure Loss:Not more than .06 inch water gage at an airflow rate of680 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 680 FPM free area velocity.F.MODEL LSG4S451.Louver Depth: 4 inch2.Frame Thickness: 16GA galvanized steel3.Blade Type: Stationary storm blades at 45 degrees4.Blade Thickness: 18GA galvanized steel5.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 45 percent.b.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 725 FPM free area velocity.G.MODEL LSG6S451.Louver Depth: 6 inch2.Frame Thickness: 20GA galvanized steel3.Blade Type: Stationary storm blades at 45 degrees4.Blade Thickness: 20GA galvanized steel5.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 42 percent.b.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 668 FPM free area velocity.2.8WEATHER BLADE LOUVERSSEE CATALOG FOR OTHER AVAILABLE DEPTHS AND CONFIGURATIONSA.MODEL LSA150W451.Louver Depth: 1.5 inch2.Frame Thickness: 0.062 inch extruded aluminum type 6063-T53.Blade Type: Weather blades at 45 degrees4.Blade Thickness: 0.062 inch extruded aluminum type 6063-T55.Blade Spacing: 1.5 inch6.Performance Requirements: Free area of not less than 43 percentB.MODEL LSA4W381.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Weather blades at 38 degrees4.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Blade Spacing: 5.09 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 54 percentb.Static Pressure Loss:Not more than .14 inch water gage at an airflow rate of803 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 803 FPM free area velocity.C.MODEL LSA6W381.Louver Depth: 6 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T53.Blade Type: Weather blades at 38/45 degrees4.Blade Thickness: 0.081 extruded aluminum type 6063-T55.Blade Spacing: 6 inch6.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 55 percentb.Static Pressure Loss:Not more than .18 inch water gage at an airflow rate of1010 FPM free area intake velocity.c.Water Penetration: Not more than 0.01 ounces per square foot of free area at an airflow rate of 1010 FPM free area velocity.2.9THIN-LINE VENTSA.MODEL LSA421.Louver Depth: 1.125 inch2.Frame Thickness: 0.062 inch extruded aluminum type 6063-T53.Blade Type: 42 degrees4.Blade Thickness: 0.062 extruded aluminum type 6063-T55.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 60 percentB.MODEL LSA301.Louver Depth: 1.125 inch2.Frame Thickness: 0.062 inch extruded aluminum type 6063-T53.Blade Type: 30 degrees4.Blade Thickness: 0.062 extruded aluminum type 6063-T55.Performance Requirements: As follows determined by testing 48 inch by 48 inch units perAMCA 500.a.Free Area: Not less than 60 percent2.10BRICK VENT LOUVERSA.MODEL EX1.Louver Depth: 4 inches and 8 inches2.Frame Thickness: extruded aluminum type 6063-T53.Blade Type: 45 degrees4.Blade Thickness: extruded aluminum type 6063-T55.Wall box louverB.MODEL FL1.Louver Depth: 1.5 inches2.Frame Thickness: 0.125” extruded aluminum type 6063-T53.Blade Type: 45 degree blade angle4.Blade Thickness: 0.125” extruded aluminum type 6063-T55.Wall box louver2.11OPERABLE LOUVERS AND DAMPERSOPERABLE, COMBINATION, AND DAMPER STYLE LOUVERS ARE AVAILABLE INCLUDING GRAVITY BACKDRAFT, MOTORIZERD, AND CONTROLLED DAMPERS WITH HVAC UNITS. SEE CATALOG FOR MORE INFORMATION.A.MODEL LAA4D451.Louver Depth: 4 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T54.Blade Thickness: 0.81 inch extruded aluminum type 6063-T56.Performance Requirements: Free area of not less than 36 percentB.MODEL LAA6S451.Louver Depth: 6 inch2.Frame Thickness: 0.081 inch extruded aluminum type 6063-T54.Blade Thickness: 0.081 inch extruded aluminum type 6063-T55.Performance Requirements: Free area of not less than 57 percentC.MODEL BDD2E1.Louver Depth: 2 inch exhaust2.Frame Thickness: 0.090 inch extruded aluminum type 6063-T54.Blade Thickness: 0.050 inch extruded aluminum type 6063-T52.12LOUVER ACCESSORIESA.Exterior Sill: Provide sill flashing of same material and finish as louvers where indicated on drawings.B.Louver Screens: Provide framed removable screens for exterior louvers.1.Bird screens: Expanded aluminum mesh: [SELECT SCREEN SIZE BELOW]a.1/2 inch by 0.063 diameter aluminum mesh wire mounted with removable frame.b.18 x 16 mesh 0.011 inch aluminum diameter wire insect screen.c.18 x 16 mesh 0.011 inch or steel diameter wire insect screen.2.Locate screens on inside face of louvers.C.Manual Operator: Handhold fixed to operator bar to permit adjustment with wing nut tension to lock louver blades in any position.D.Chain Operator: Pull chain, spring, and wall clip provide individual section control at any elevation from floor. Optional: fusible link to ensure opening or closing in the event of fire.E.Concealed Hand Crank:Concealed operator mechanism located in jamb frame, operated by removable hand crank.F.Concealed Motor: 2-position, UL approved motor and linkage fully encased in louver frame behind access panel.G.Electronic or Pneumatic Actuation: [SPECIFY MANUFACTURER AND ACTUATOR MODEL DESIGNATION.]2.13FABRICATIONA.Fabrication Requirements:1.Performance:Fabricate as required for optimum performance with respect to water penetration, strength, durability, and appearance.2.Size: Fabricate louvers in walls to meet dimensions indicated on drawings.3.Field Measurement: Verify size, location, and placement of louvers before fabrication.4.Shop Assembly: Fabricate to minimize field adjustments, splicing, mechanical joints, and field assembly of units.5.Accessories: Include supports, anchorage, and accessories required for complete assembly.6.Vertical mullions: Provide vertical mullions of type and spacing indicated but not farther apart than recommended by manufacturer.7.Horizontal mullions: Provide horizontal mullions at horizontal joints between louver units except where continuous vertical assemblies are indicated.8.Connections: Join frame and blade members to one another welding, except where field bolted connections between frame members are made necessary by size of louvers.9.Spacing: Maintain equal blade spacing to produce uniform appearance.2.ply with NAAMM Metal Finishes Manual for recommendations relative to application and designations of finishes.B.Shop Finishing: Factory finish louvers and accessories as following: [SELECT FINISHES BELOW]1.Mill aluminum finish.2.Clear anodized aluminum finish: AA-M10C22A21.3.Color anodized aluminum finish: AA-M10C22A44.4.Baked enamel finish: AA-C23C42R1x.5.Fluorocarbon 2 Coat Coating System: Comply with AAMA 605.2.6.Fluorocarbon 3 Coat Coating System (with clear top coat) : Comply with AAMA 605.2.C.Color: [SELECT COLOR OPTION BELOW]1.Selected by Architect from manufacturer’s standard color selection chart.2.Custom colors, as selected by Architect.D.Finish Protection: Provide finish protection as recommended by louver manufacturer.E.Selected color will be submitted for approval using same materials to be used for fabrication.PART 3 - EXECUTION3.1EXAMINATIONA.Examine areas and conditions under which Work is to be performed and identify conditions detrimental to proper or timely completion.1.Do not proceed until unsatisfactory conditions have been corrected.3.2PREPARATIONA.Coordinate size and location of cutouts in blank-off panels with mechanical ductwork installer.B.Protection: Protect aluminum in contact with masonry, concrete, steel, and other dissimilar materials from galvanic and corrosive action with neoprene gaskets or a coat of bituminous paint, applied before installation of aluminum product.3.3INSTALLATIONA.Install louvers per manufacturer’s typical details and instructions along with advice of their qualified representative.B.Provide necessary fastenings and anchors as required to complete installation. Install units plumb, level, and in proper alignment with adjacent Work.C.Form tight joints and fit exposed connections accurately.3.4ADJUSTING AND CLEANINGA.Adjustment: Adjust operable parts for smooth and accurate operation.B.Remove temporary coverings and protection of adjacent work areas. C.Repair or replace damaged products. D.Clean installed products per manufacturer’s instructions before completion. 3.5PROTECTIONA.After installation, carefully protect work against disfiguration or damage from mechanical abuse or harmful materials.3.6LOUVER SCHEDULE (OPTIONAL)END OF SECTION ................
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