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- 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
-