SECTION 15815 FLEXIBLE DUCTWORK NOTE ** This section is based on flexible metal duct units produced by: NOTE ** NOTE ** METALFLEX Division, Professional Duct Systems, Inc. NOTE ** 6180 Boat Rock Boulevard, S. W. NOTE ** Atlanta, GA 30336 NOTE ** Tel: (888) MTL-FLEX (888-685-3539) NOTE ** NOTE ** Products include UL-listed non-insulated and insulated flexible aluminum duct, and non-listed acoustical insulated duct. METALFLEX UL-listed duct is approved for use under numerous building codes. NOTE ** NOTE ** SECTION 15815 - FLEXIBLE DUCTWORK, Copyright 1997, The Architect's Catalog, Inc. PART 1 GENERAL 1.1 SECTION INCLUDES NOTE ** Delete items below not required for project. A. Non-Insulated Flexible Duct. B. Insulated Flexible Duct. C. Acoustical Insulated Flexible Duct. 1.2 RELATED SECTIONS NOTE ** Delete any sections below not relevant to this project; add others as required. A. Section 15810 - Ducts. B. Section 15822 - Sound Attenuators. 1.3 REFERENCES NOTE ** Delete references from the list below that are not actually required by the text of the edited section. A. ASTM C 518 - Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Apparatus. B. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials. C. ASTM E 96 - Standard Test Methods for Water Vapor Transmission of Materials. D. NFPA 90A - Standard for Installation of Air Conditioning and Ventilating Systems; National Fire Protection Association. E. NFPA 90B - Standard for Installation of Warm Air Heating and Air Conditioning Systems; National Fire Protection Association. F. UL 181 - Standard for Factory Made Air Ducts and Air Connectors; Underwriters Laboratory. 1.4 SUBMITTALS A. Submit under provisions of Section 01300. B. Product Data: Manufacturer's product literature for each type unit. NOTE ** Delete paragraph below if building code not cited in referenced Article. C. Quality Assurance Submittals: Certified test reports from independent testing laboratory supporting compliance of products to Building Code cited in QUALITY ASSURANCE Article of this Section. NOTE ** Delete Article below if only acoustical insulated duct units specified. 1.5 QUALITY ASSURANCE A. Regulatory requirements: UL compliance; affix UL Listing Mark, with Class code, to each UL listed unit. NOTE ** Edit subparagraph below for applicable jurisdiction; delete subparagraph if not applicable. B. Code compliance: Units listed as complying with the following: 1. SBCC. 2. ICBO. 3. BOCA. 4. HUD 515-2.1(b). 5. City of Chicago, IL. 6. New York, NY. 7. San Francisco, CA. 8. Dade County, FL Building Code. PART 2 PRODUCTS 2.1 MANUFACTURERS A. Acceptable Manufacturer: METALFLEX Division of Professional Duct Systems, Inc., 6180 Boat Rock Blvd., S.W., Atlanta, GA 30336. ASD. Tel: (888) MTL-FLEX (888- 685-3539). NOTE ** Delete one of the two following paragraphs; coordinate with Division 01 requirements. B. Requests for substitutions will be considered in accordance with provisions of Section 01600. C. Substitutions: Not permitted. D. Supply all products specified in this section from a single manufacturer. 2.2 NON-INSULATED FLEXIBLE AIR DUCT A. Acceptable Product: METALFLEX V-100-UL. NOTE ** Select product V-100-UL for compressed duct; select product V-100-S-UL for non-compressed duct. B. Acceptable Product: METALFLEX V-100-S-UL. C. Materials: Aluminum, formed into corrugated circular duct in eight foot length with watertight seams and continuous lock seam connection at each end. D. Characteristics: 1. Meet requirements of UL 181. 2. Listed Class 0 Air Duct in accordance with NFPA 90A and NFPA 90B. 3. Fire Hazard Classification in accordance with ASTM E 84: a. Flame Spread: Not exceeding 0. b. Smoke Developed: Not exceeding 0. 4. Maximum velocity air handling capability: 5000 feet per minute. 5. Maximum operating pressure, positive and negative: a. Duct diameter 3 inches to 10 inches: Plus or minus 12 inches WG. b. Duct diameter 12 inches to 24 inches: Plus or minus 8 inches WG. c. Operating temperature range: Minus 100 degrees F to plus 430 degrees F. NOTE ** Retain sentence below if specifying product V-100- UL. 6. Ship duct lengths compressed to 2 feet, 8 inch length. E. Accessories: Furnish each length with universal male/female connector at each end. NOTE ** Paragraph above specifies standard accessories for product V-100-UL (compressed duct); paragraph below specifies standard accessories for product V-100-S- UL (non-compressed duct). F. Accessories: Furnish each length with male/female connector one end. 2.3 INSULATED FLEXIBLE AIR DUCT NOTE ** The V-200 product line has gray polyethylene vapor barrier. Select product V-200-UL for compressed duct; select product V-200-S-UL for non-compressed duct. A. Acceptable Product: METALFLEX V-200-UL. B. Acceptable Product: METALFLEX V-200-S-UL. NOTE ** The V-250 product line has metalized film vapor barrier having greater moisture resistance than the V-200 product line. Select product V-250-UL for compressed duct; select product V-250-S-UL for non- compressed duct. C. Acceptable Product: METALFLEX V-250-UL. D. Acceptable Product: METALFLEX V-250-S-UL. E. Materials: 1. Inner Duct Core: Aluminum, formed into corrugated circular duct in eight foot length with watertight seams and continuous lock seam connection at each end. NOTE ** Standard insulating layer thickness is 1-1/2 inches; edit below if higher 'R' value is required. 2. Insulating Layer: Non-combustible, 1-1/2 inches thickness. NOTE ** The V-200 product line has gray polyethylene vapor barrier; the V-250 product line has metalized film vapor barrier. 3. Vapor Barrier: Polyethylene, gray color, having 0.10 Perm rating in accordance with ASTM E 96, Procedure A. 4. Vapor Barrier: Metalized film, having 0.05 Perm rating in accordance with ASTM E 96, Procedure A. F. Characteristics: 1. Meet requirements of UL 181. 2. Listed Class 1 Air Duct in accordance with NFPA 90A and NFPA 90B. 3. Fire Hazard Classification in accordance with ASTM E 84: a. Flame Spread: Not exceeding 25. b. Smoke Developed: Not exceeding 50. 4. Maximum velocity air handling capability: 5000 feet per minute. 5. Maximum operating pressure, positive and negative: a. Duct diameter 4 inches to 10 inches: Plus or minus 12 inches WG. b. Duct diameter 12 inches to 20 inches: Plus or minus 8 inches WG. 6. Operating temperature range: Minus 20 degrees F to 250 degrees F. NOTE ** Ratings specified below are standard; edit if higher thermal efficiency required. 7. Thermal efficiency: a. C-factor, calculated at 75 degrees F mean: 0.173. b. R-Value, calculated by ADC FD72-R1 method: 5.79 average. c. R-Value, calculated by ASTM C 518 method: 4.2 average. NOTE ** Retain sentence below if specifying product V-200- UL or V-250-UL. 8. Ship duct lengths compressed to 2 feet, 8 inch length. G. Accessories: Furnish each length with universal male/female connector at each end. NOTE ** Paragraph above specifies standard accessories for products V-200-UL and V-250-UL (compressed duct); paragraph below specifies standard accessories for products V-200-S-UL and V-250-S-UL (non-compressed duct). H. Accessories: Furnish each length with male/female connector one end. 2.4 ACOUSTICAL INSULATED FLEXIBLE AIR DUCT NOTE ** Product V-450-S-DB has metalized film vapor barrier with high moisture resistance. The product is non- compressed duct. A. Acceptable Product: METALFLEX V-450-S-DB. B. Materials: 1. Inner Duct Core: Aluminum, formed into corrugated circular duct in eight foot length with watertight seams and continuous lock seam connection at each end. 2. Insulating Layer: Non-combustible, 1-1/2 inches thickness. 3. Vapor Barrier: Metalized film, having 0.05 Perm rating in accordance with ASTM E 96, Procedure A. C. Characteristics: 1. Maximum velocity air handling capability: 2500 feet per minute. 2. Maximum operating pressure, positive and negative, for duct diameter 4 inches to 20 inches: Plus or minus 2 inches WG. 3. Operating temperature range: Minus 20 degrees F to plus 250 degrees F. 4. Thermal efficiency: a. C-factor, calculated at 75 degrees F mean: 0.173. b. R-Value, calculated by ADC FD72-R1 method: 5.79 average. c. R-Value, calculated by ASTM C 518 method: 4.2 average. D. Accessories: Furnish each length with male/female connector one end. PART 3 EXECUTION 3.1 INSTALLATION NOTE ** Verify specification section reference below. Edit if required. A. Install flexible ductwork in accordance with provisions of Section 15810 - Ducts. END OF SECTION