SECTION 089110 - EXTERIOR METAL WALL LOUVERS
The Airolite Company, LLC, www.airolite.com, PO Box 410, Schofield, WI 54476; PH: 715-841-8757, FX: 715-841-8773.
Review with Mechanical Engineer to determine requirements.
Contact Airolite for technical assistance if needed.
PART 1 - 	GENERAL
1.1	SUMMARY
A.	Section Includes:
1.	Fixed drainable blade, extruded aluminum wall louvers.
2.	Blank-off panels for unused louvers, screening, and other accessories.
1.2	DEFINITIONS
A.	Definitions in AMCA 501 apply to this Section, unless otherwise specified.
B.	Percent Free Area: Minimum, measured in sq. ft. of free area in a 4 ft. by 4 ft. (122 cm by 122 cm) louver.
C.	Free Area Velocity: Minimum, at beginning point of water penetration.
D.	Air Volume Flow Rate: Minimum, at beginning point of water penetration through a 4 ft. by 4 ft. (122 cm by 122 cm) louver.
E.	Pressure Drop: Maximum, at beginning point of water penetration, measured using a 4 ft. by 4 ft. (122 cm by 122 cm) louver.
1.3	REFERENCED STANDARDS
A.	Edition Dates: Current edition at Bid Date, with applicable appendices and supplements if any, unless otherwise indicated or adopted by authorities having jurisdiction.
Include standards referenced elsewhere in this Section after editing.
B.	Air Movement and Control Association (AMCA) International:
1.	AMCA 500-L - Laboratory Methods of Testing Louvers for Rating
2.	AMCA 501 - Louver Application Manual and Design Guide
3.	AMCA 511 - Certified Ratings Program Product Rating Manual for Air Control Devices
C.	American Society of Civil Engineers / Structural Engineering Institute (ASCE/SEI):
1.	ASCE/SEI 7 Minimum Design Loads For Buildings and Other Structures.
D.	ASTM International (ASTM):
1.	ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
E.	Fenestration and Glazing Industry Alliance (FGIA):
1.	[AAMA 611 - Voluntary Specification for Anodized Architectural Aluminum]
2.	[AAMA 2604 - Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels]
3.	[AAMA 2605 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels]
1.4	ADMINISTRATIVE REQUIREMENTS
A.	Coordinate with the Work of other Sections for sequencing and scheduling to avoid delays, and for completeness of weatherproofing system.
1.5	ACTION SUBMITTALS
A.	Shop Drawings.
1.	Louver layout plan, elevations, opening and clearance dimensions, tolerances, and anchorage.
2.	Head, jamb, and sill details.
3.	Blade configuration, screens, blank-off panel areas, and frames.
4.	Field Measurements: Verify actual measurements by field measuring before fabrication and include measurements in shop drawings. Coordinate field measurements and fabrication schedule to avoid delays.
B.	Product Data: Design characteristics, maximum recommended air velocity, design free area based on 16 sq. ft. (1.5 sq. m) louver, materials, and finishes. Include calculations prepared by a professional engineer registered in project location.
1.6	INFORMATIONAL SUBMITTALS
A.	Test Data: Certified test data showing published test results for specified performance, based on AMCA 500-L and AMCA 511.
B.	Samples: Color samples illustrating specified finish.
C.	Manufacturer's Instructions: Include installation instructions, rough-in dimensions, special procedures, and perimeter conditions requiring special attention.
1.7	QUALITY ASSURANCE
A.	Conform to AMCA Certification Ratings Program and mark units with AMCA Certified Ratings Seal.
B.	Manufacturer Qualifications: Member of AMCA, producing tested louvers conforming to with provisions of this Section.
1.8	DELIVERY, STORAGE, AND HANDLING
A.	Do not deliver until construction work which might cause damage to exterior metal wall louvers is complete.
B.	Conform to manufacturer's instructions. Deliver and store in original, unopened, protective containers and packaging with seals intact and labels clearly identifying product name and manufacturer. Store in a safe, protected location. Handle in a manner to protect from damage.
1.9	WARRANTY
A.	Warranties shall not deprive Owner of other rights Owner may have by law or under other provisions of the Contract Documents, and will be in addition to and run concurrently with other warranties made under the Contract Documents.
Select warranty to correspond with finish type specified in Part 2 of this Section.
Airolite standard warranty for Superior Performing Organic Coating is 10 years. Can be extended to 20 years except in South Florida exposure.
B.	Manufacturer's AAMA 2605 Kynar/Fluoropolymer Coating Warranty: [10][20] year warranty from date of shipment against excessive chalking or excessive color change, and against chipping, cracking, or peeling.
C.	Manufacturer's AAMA 2604 Kynar/Fluoropolymer Coating Warranty: 5 year warranty from date of shipment against excessive chalking or excessive color change, and against chipping, cracking, or peeling.
D.	Manufacturer's Class I Anodized Finish Warranty: Five year warranty from date of shipment against excessive fading or excessive non-uniformity of finish, and against cracking, crazing, flaking, or blistering.
E.	Manufacturer's Class II Anodized Finish Warranty: One year warranty from date of shipment against excessive fading or excessive non-uniformity of finish, and against cracking, crazing, flaking, or blistering.
PART 2 - 	PRODUCTS
2.1	MANUFACTURERS
A.	[Basis of Design ]Products: Provide products as [specified][indicated on Drawings], or Architect-accepted substitution. Manufacturers of exterior metal wall louvers include but are not limited to:
1.	Airolite Company, LLC (Basis of Design).
2.2	PERFORMANCE / DESIGN CRITERIA
A.	Weather Resistance of Louvers: Tested according to AMCA 500-L and certified under AMCA 511.
B.	Structural Design of Louvers: Engineer louver to resist wind load indicated by Structural Drawing Notes and ASCE/SEI 7 for Wind Load and Exposure.
2.3	FIXED DRAINABLE BLADE LOUVERS
A.	Airolite Model K630:
1.	Louver Depth: 4 inches (101.6 mm).
2.	Blade: 0.081 inch (2.06 mm).
3.	Frame: 0.081 inch (2.06 mm).
4.	Blade Angle: 30 degrees.
5.	Percent Free Area: 55.0%
6.	Performance at Beginning Point of Water Penetration
a.	Free Area Velocity: 1002 fpm (5.090 m/s).
b.	Max Intake Volume: 8818 cfm (4.161 m3/s).
7.	Performance at 6,000 CFM (2.832 m3/s).
a.	Pressure Drop: 0.066 inch wg (0.016 kPa).
8.	Wind Resistance: Designed to withstand 25 PSF (1.2 kPa).
2.4	MATERIALS
A.	Extruded Aluminum: ASTM B221 6063 T5 or T52 extruded aluminum alloy and temper.
2.5	FABRICATION
A.	Assemble louvers in factory to minimize field splicing and assembly. Disassemble units as necessary for shipping and handling limitations. Clearly mark units for reassembly and coordinated installation. 
B.	Maintain equal louver blade spacing, including separation between blades and frames at head and sill, to produce uniform appearance. 
C.	Fabricate frames, including integral sills, to fit in openings of sizes indicated, with allowances made for fabrication and installation tolerances, adjoining material tolerances, and perimeter sealant joints. 
D.	Other: Attachments, accessories, supports, and as required for complete installations.
E.	Provide vertical mullions of type and at spacings indicated, but not more than recommended by manufacturer, or 72 inches o.c., whichever is less. 
F.	Provide subsills made of same material as louvers or extended sills for recessed louvers. 
2.6	FINISHES
Coordinate finishes article with warranty article specified in Part 1 of this Section. For color chart go to Airolite Finishes and Colors, Rev 6 April 2020. 
A.	Exposed Aluminum: Kynar/Fluoropolymer Coating, [2-coat 70% Kynar paint/100% Fluoropolymer (AAMA 2605)][3-coat 70% Kynar paint/100% Fluoropolymer (AAMA 2605)][4-coat 70% Kynar paint] factory-applied baked‑on finish, AAMA 2605.
1.	Color: [________________________][As selected by Architect from manufacturer's Standard Colors][As selected by Architect from manufacturer's Mica Colors][Custom color, to match ___________, specified in Section ______, as verified by Architect's approved color samples].
B.	Exposed Aluminum: Fluoropolymer Coating, 50% Kynar paint, AAMA 2604.
1.	Color/Finish: [________________________][Wood grain finish][As selected by Architect from manufacturer's Standard Colors][Custom color, to match ___________, specified in Section ______, as verified by Architect's approved color samples].
Extra Dark Bronze, and Champagne, are less commonly available but Extra Dark Bronze, and Champagne, are less commonly available but are available from Airolite. Color anodizing may vary slightly even from piece to piece on the same job. Clear or black tend not to vary. Class I is better than Class II for exterior use.
C.	Exposed Aluminum: Clear anodized, Class I (0.7 mils thickness), AAMA 611, AA-M10C21A41 (215 R-1).
D.	Exposed Aluminum: Clear anodized, Class II (0.4 mils thickness), AAMA 611, AA-M10C21A31 (204 R-1).
E.	Exposed Aluminum: Integral Color anodized, Class I (0.7 mils thickness), AAMA 611, AA-M10C21A41, [Light Bronze][Medium Bronze][Dark Bronze][Extra Dark Bronze][Black][Champagne][As selected by Architect from manufacturer's Anodize Colors].
F.	Unfinished exposed metal not accepted. Touch up uncoated metal for smooth, finished appearance matching color and gloss level of adjacent finish.
G.	Joint Sealant Color: [Match wall color][Match ___________, specified in Section ______].
2.7	ACCESSORIES
A.	Fasteners: Aluminum or stainless steel.
B.	Flashings: Same material and appearance as louver.
C.	Joint Sealants: Specified in Section 079200.
D.	Sill Drain Pan: Minimum 0.05 inch (1.27 mm) thick aluminum sheet, full depth and width of louver sill, 0.7 inch (17.78 mm) high side panels, sealed joints.
Retain Blank-Off Panels if used in design.
E.	Blank-Off Panels: Locate at inactive louvers. Mechanically secure to back side of louver. Include gaskets, seals, and sealant to make weathertight. Design to drain water to outside of building.
1.	Louvers Backed by Solid Wall: Aluminum sheet, 0.05 inch (1.27 mm) thick.
2.	Louvers with Exposed Interior Face: Aluminum faced insulated composite sandwich panel, 1 inch (25.4mm) or 2 inch (50.8 mm) thick.
Select one screening type below. Mill finish aluminum is standard. Bird screening with 1/2-inch by 0.063-inch aluminum mesh wire is often used. Insect screening can sometimes clog with debris like cottonwood fluff, dust, and dead insects. Often not specified for that reason. Insect screening should not be specified with color coating. 
F.	Bird Screening: Folded aluminum screen frame.
1.	Flattened expanded aluminum, [3/4-inch by 0.050 inch (19.05 mm by 1.27 mm), 61 percent free area][3/4-inch by 0.125 inch (19.05 mm by 3.175 mm), 62 percent free area].
a.	Finish: Mill finish aluminum.
b.	Finish: [Black][________] factory-finished paint, may affect free area of screen.
2.	Square aluminum mesh wire, [1/4-inch by 0.047-inch (6.350 mm by 1.194 mm), 71 percent free area][1/2-inch by 0.063-inch (12.70 mm by 1.600 mm), 80 percent free area][1-inch by 0.120-inch (25.4 mm by 3.048 mm), 80 percent free area].
a.	Finish: Mill finish aluminum.
b.	Finish: [Black][________] factory-finished paint.
3.	Square galvanized steel wire cloth, 1/2-inch by 0.041 inch (12.70 mm by 1.041 mm), 71 percent free area.
a.	Finish: Galvanized, unfinished.
b.	Finish: [Black][________] factory-finished paint.
4.	Square stainless steel wire cloth, [1/2-inch by 0.047-inch (12.70 mm by 1.194 mm), 70 percent free area][1-inch by 0.063-inch (25.4 mm by 1.600 mm), 87.8 percent free area].
G.	Insect Screening: 0.019 inch (0.48 mm) rewireable aluminum frame.
1.	Aluminum 16 by 18 mesh, 0.011 inch (0.28 mm) diameter wire, mill finish.
2.	Stainless Steel 18 by 18 mesh, 0.009 inch (0.23 mm) diameter wire.
PART 3 - 	EXECUTION
3.1	EXAMINATION
A.	Verify openings are ready to receive work of this Section before beginning work. Notify Architect in writing of conditions that are not acceptable.
B.	Do not begin work of this Section until unacceptable conditions have been corrected.
3.2	INSTALLATION
A.	Conform to manufacturer's instructions and provisions of Contract Documents.
B.	Isolate dissimilar materials to prevent galvanic action.
C.	Install exterior louvers to shed water to exterior of building.
D.	Joint Sealant Installation: Specified in Section 079200.
E.	Install louver screening.
F.	Install blank-off panels at inactive wall louvers.
3.3	ADJUSTING
A.	Repair or replace wall louvers with damaged components and finishes.
3.4	CLEANING
A.	Leave wall louver installations clean, installation area free from debris and residue resulting from work of this Section.
END OF SECTION