15815 - Flexible Ductwork. CSI 3-Part Specifications. Large file (>500kB).

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.

PART 1 GENERAL

1.1 SECTION INCLUDES

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

Delete any sections below not relevant to this project; add others as required.

A. Section 15815 - Ducts.

B. Section 15822 - Sound Attenuators.

1.3 REFERENCES

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 for Installation of Air Conditioning and Ventilating Systems; National Fire Protection Association.

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.

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.

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.

Edit subparagraph below for applicable jurisdiction; delete subparagraph if not applicable.

1. Code compliance: Units listed as complying with the following:
a. SBCC.
b. ICBO.
c. BOCA.
d. HUD 515-2.1(b).
e. City of Chicago, IL.
f. New York, NY.
g. San Francisco, CA.
h. 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, Georgia, 30336. Telephone 1-800-638-2280.

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.

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 inch WG.
b. Duct diameter 12 inches to 24 inches: Plus or minus 08 inch WG.
c. Operating temperature range: Minus 100 degrees F. to 430 degrees F.

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.

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

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.

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 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.

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.

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 inch WG.
b. Duct diameter 12 inches to 24 inches: Plus or minus 08 inch WG.
6. Operating temperature range: minus 20 degrees F. to 250 degrees F.

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.

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.

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

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:
a. Duct diameter 4 inches to 20 inches: Plus or minus 02 inch WG.
3. Operating temperature range: minus 20 degrees F. to 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 universal male/female connector at one end.

PART 3 EXECUTION

3.1 INSTALLATION

Verify specification section reference below. Edit if required.

A. Install duct in accordance with Section 15810 - Air Distribution.