Textile Air Dispersion Systems

SECTION 23 31 00

TEXTILE AIR DISPERSION SYSTEMS

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** NOTE TO SPECIFIER ** DuctSox Corporation; commercial and industrial fabric air dispersion products.
This section is based on the products of DuctSox Corporation, which is located at:
4343 Chavenelle Rd.
Dubuque, IA 52002
Toll Free Tel: 866-382-8769
Tel: 563-588-5300
Fax: 563-588-5330
Email:request info ()
Web:
[Click Here] for additional information.
DuctSox Corporation, headquartered in Peosta, Iowa, is a manufacturer of commercial and industrial fabric air dispersion products for open ceiling architecture, critical environments, and under floor applications. Our fabric systems are a cost effective, aesthetically attractive alternative to metal ductwork and diffusers. They are easy to install, have low material waste on the jobsite, and offer many other Green advantages. Our products have been accepted within key industry organizations such as ASHRAE, Underwriters Laboratories (U.S. & Canada), International Code Council, and many building authorities throughout the world.
Different than conventional metal, fabric products are engineered and manufactured for each project. DuctSox designs can be simple, straight systems or very intricate layouts which incorporate fittings such as radius elbows, Ts, and transitions. Sections are zippered together to form extended lengths with diameters from 6 to 100 inches (152 mm to 2540 mm). Whether industrial, retail, education, commercial, government, warehousing, laboratory, food processing, temporary or permanent, DuctSox offers a proven choice.
To maintain market leadership, DuctSox offers the best products, designs, and sales support in our industry. More than maintaining our standard products, DuctSox strives to be the leader in the HVAC ductwork industry through our commitment to quality, service, and innovation. This commitment has allowed us to expand our product offering to include products such as LabSox laboratory ductwork, KitchenSox commercial kitchen ductwork, UFSox underfloor ductwork, and SkeleCore, an internal framework system for fabric duct.

PART 1 GENERAL

1.1 SECTION INCLUDES

** NOTE TO SPECIFIER ** Delete items below not required for project.

A. Textile Air Dispersion Systems.

B. Laboratory Textile Air Dispersion Systems.

C. Commercial Kitchen Textile Air Dispersion Systems.

D. Caustic Environments Textile Air Dispersion Systems.

E. Data Server Room Textile Air Dispersion Systems.

F. Underfloor Textile Air Dispersion Systems.

1.2 RELATED SECTIONS

** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.

A. Section 23 74 33 - Dedicated Outdoor-Air Units.

1.3 REFERENCES

** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.

A. ASTM International (ASTM):

1. ASTM D 737 - Standard Test Method for Air Permeability of Textile Fabrics.

2. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.

B. National Fire Protection Association (NFPA): NFPA 90 - Standard for the Installation of Air-Conditioning and Ventilating Systems.

1. NFPA 90A - Standard for the Installation of Air-Conditioning and Ventilating Systems.

C. Underwriters Laboratories (UL).

1. UL 2518 - Standard for Air Dispersion Systems.

1.4 SUBMITTALS

A. Submit under provisions of Section 01 30 00 - Administrative Requirements.

B. Product Data: Manufacturer's data sheets for each system type specified, including but not limited to:

1. Performance characteristics.

2. Preparation instructions and recommendations.

3. Storage and handling requirements and recommendations.

4. Installation methods.

5. Cleaning methods.

C. Shop Drawings: Submit fabricator's shop drawings, including plans, elevations, sections, and details, indicating dimensions, types and tolerances, anchorage, attachment and relationship with adjacent construction.

** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.

D. Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications: Minimum 5 year experience manufacturing similar products.

B. Installer Qualifications: Minimum 2 year experience installing similar products.

C. System Support Information: Manufacturer shall have documented design performance information including duct sizing, vent and orifice location, vent and orifice sizing, length, and suspension. Parameters for design, including maximum air temperature, velocity, pressure and fabric permeability, shall be tested and documented.

1.6 PRE-INSTALLATION MEETINGS

A. Convene minimum two weeks prior to starting work of this section.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Deliver and store products in manufacturer's unopened packaging bearing the brand name and manufacturer's identification until ready for installation.

B. Handling: Handle materials to avoid damage.

1.8 PROJECT CONDITIONS

A. Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.

1.9 SEQUENCING

A. Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.

1.10 WARRANTY

Our Product Warranty is for replacement or repair credit based on the amount of the warranty period remaining. The warranty is not available in the form of a cash payment, only as credit towards repair or replacement. The DuctSox Warranty covers materials, fabrication, and performance of the fabric portion of the DuctSox System only. Warranty coverage begins at the time of shipment. Both the Design & Performance Warranty and the Product Warranty exclude damage to the fabric from improper installation, poor maintenance, abuse, abrasion, caustic chemicals, exposure to high temperature (over 180 degrees Fahrenheit, 82 degrees Celsius), fabric discoloration and shrinkage, or any unauthorized modifications to the DuctSox System. It also does not cover labor, equipment rental, or freight charges incurred as a result of executing the warranty. DuctSox Product Warranty is non-transferable.
Design & Performance Warranty DuctSox Systems that are designed within our performance criteria, based on DuctSox submittal documents, are covered by a 1 year Design & Performance Warranty. We want to ensure the product performs consistently through the entire heating and cooling cycle for the first year of operation. To ensure a DuctSox System is designed correctly, our Inside Sales and Engineering group are available to provide design assistance. Our Design Manual is also available on our website. Delete warranty provisions not required.

A. Manufacturer's Warranty Requirements: Warranty precedent upon airflow and static pressure per original DuctSox design in accordance with published requirements. Warranty shall be based on inlet velocities up to 1600 FPM (8.12m/s). For SkeleCore FTS, a 10 year warranty shall be available for inlet velocities up to 2000 FPM (10.16m/s).

B. Suspension/Fabric Retention Systems:

1. Fabric Tensioning System (FTS): Maximum 20 years with Sedona-Xm and TufTex fabrics.

2. Pull-Tight Tensioning System: Maximum 15 years with Sedona-Xm and TufTex fabrics.

3. Fabric Tensioning System (FTS): Maximum 15 years with Verona and Duratex fabrics.

4. Pull-Tight Tensioning System: Maximum 15 years with Verona and Duratex fabrics.

C. Hoops and Hangers Systems:

1. Internal Hoop System (IHS): 10 years with Sedona-Xm, TufTex, Verona and Duratex fabrics.

2. 3x1 Row and Surface Mount: 10 years with Sedona-Xm, TufTex, Verona and Duratex fabrics. Prorated for Verona and Duratex fabrics.

D. Fabrics (all systems):

1. UFSox, Stat-X: 5 years (pro-rated 2.5-5).

2. Rx, Microbe-X, LabSox, KitchenSox, ChemSox: 1 year.

3. OvalSox: 5 years (1 year for Food Processing).

4. DataSox: 5 Year.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturer: DuctSox Corporation, which is located at: 4343 Chavenelle Rd.; Dubuque, IA 52002; Toll Free Tel: 866-382-8769; Tel: 563-588-5300; Fax: 563-588-5330 ; Email:request info (); Web:

** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.

B. Substitutions: Not permitted.

C. Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.

** NOTE TO SPECIFIER ** DuctSox products are used to distribute and disperse air in both Open and Finished Ceiling Architecture. SimpleSox is a modular, adjustable fabric ductwork system assembled with pre-made components that are in stock and available for shipment in 2 to 5 business days. It's an ideal choice for applications requiring HVAC ductwork in a pinch. Saving time and money compared to using traditional metal ductwork.

2.2 SYSTEM DESCRIPTION

** NOTE TO SPECIFIER ** Before selecting how the DuctSox System will be suspended, the Shape must first be decided. This is based on your application needs. DuctSox are available in Cylindrical, Oval, D-Shape, or Quarter-Round. Delete shape not required.

A. Shape/Suspension/Fabric Retention:

1. Cylindrical.

2. Oval.

3. D-Shape.

4. Quarter-Round.

** NOTE TO SPECIFIER ** Because the entire DuctSox System is a diffuser, air dispersion and distribution are combined allowing simple and efficient layouts compared to metal duct systems.

B. Layout/Fittings

1. Radius Elbows: Refer to Drawings.

a. 30 degrees.

b. 60 degrees.

c. 45 degrees.

d. 90 degrees.

e. Custom as needed

2. Transitions: Refer to Drawings.

a. Flat-on-Top.

b. Flat-on-Bottom.

c. Concentric.

d. Round to D-Shape.

3. Take-Offs (T): Refer to Drawings.

a. Flat-on-Top.

b. Flat-on-Bottom.

c. Concentric.

4. Crosses: Refer to Drawings.

a. Flat-on-Top.

b. Flat-on-Bottom.

c. Concentric.

C. Air Dispersion:

1. Air-Porous Fabric: Supply air is delivered exclusively through porous fabric.

a. Flow rate through fabric controlled by weave and pressure from 1 to 200 FPM (.005 to 1.016 m/s).

** NOTE TO SPECIFIER ** Airflow throw up to 90 feet (27,432mm). Most common method for heating and cooling; high entrainment from outlets provide uniform temperature and less drafts, creating a comfortable environment. Unlimited flexibility in designing vent size and location for optimum airflow control. Delete if not required.

2. Linear Vents:

a. Delivers airflow through precision cut orifice patterns.

b. Vent size referenced by airflow per linear foot.

** NOTE TO SPECIFIER ** Provides jet-type airflow. Type, location, and quantity based on airflow requirements. Available in a variety of colors. Delete if not required.

3. Nozzles:

a. Fixed: Straight flow or closed.

b. Adjustable: Directional flow or closed.

** NOTE TO SPECIFIER ** Airflow throw by orifice size & pressure, up to 150 ft. (45,720mm). For heating and cooling, Orifices are ideal for areas requiring extended and precise throw such as recreation, arenas, convention centers, retail, industrial, warehouses, or spot cooling. Delete if not required.

4. Orifices:

a. Orifice sizes: 1/2 inch to 5 inches (12.7 mm to127 mm) diameter/SG outlets 2 inches or 3 inches (51 mm or 76 mm) diameter.

b. Orifice size and orientation based on required air throw distance.

D. Fabric Ductwork:

1. Design/Construction:

a. Glider Attachment (Used for both Track and Cable).

** NOTE TO SPECIFIER ** Standard on Sedona-Xm, TufTex, Verona, DuraTex, Stat-X, Rx. Delete if not required.

b. Cover-Up Sleeve Concealing DuctBelt and Anchors.

** NOTE TO SPECIFIER ** Standard on Microbe-X. Delete if not required.

c. Inlet Collar with DuctBelt and Anchors.

** NOTE TO SPECIFIER ** Delete fabrication details not required.

d. Zippered Endcap.

e. Zippered Inlet Collar.

2. Dispersion Types:

** NOTE TO SPECIFIER ** Delete dispersion types not required.

a. Linear Vents.

b. Adjustable Nozzles:

** NOTE TO SPECIFIER ** Delete adjustable nozzle types not required.

1) 2 inches (51 mm).

2) 3 inches (76 mm).

c. Fixed Nozzles:

** NOTE TO SPECIFIER ** Delete fixed nozzle types not required.

1) Orifices.

2) Porous fabric only.

** NOTE TO SPECIFIER ** Options: Delete options not required.

E. Adjustable Flow Device (AFD):

** NOTE TO SPECIFIER ** Airflow control is critical in HVAC air dispersion. The patented zip-in Adjustable Flow Device (AFD) offers variable resistance to balance static regain, balance airflow to branches, reduce turbulence, and reduce abrupt start-ups. AFD devices come standard with Sedona-Xm and TufTex Systems. The AFD is an option with other fabrics. Except at the inlet, all AFD's are pre-set from the factory and shall not require field balancing. The inlet AFD can be adjusted for airflow turbulence. Typically, systems shall not include more than two AFDs in sequence to an endcap. Delete flow devices not required.

1. Plenum: Direct airflow into branch take-offs where velocity is over 1,200 FPM (6.01m/s).

2. Inlet: Flow straightener or balance airflow. All systems with greater than 1,200 FPM (6.01m/s) inlet velocity.

3. Middle: Balances static regain. All systems with an intermediate zipper over 40 feet (12,192 mm) and greater than 1,200 FPM (6.01m/s) inlet velocity.

4. No Pop: Reduces inflation pop. Single AFD located in last 30% of long run, included for all systems over 100 feet (30,480 mm) and over 5,000 CFM (2,360L/s).

** NOTE TO SPECIFIER ** To improve the aesthetics of a simple 1 row system, a Tensioned Endcap upgrade is available for 8 inches to 30 inches (203 to 762 mm) diameter and systems less than 50 feet (15240 mm). Note: Availability is limited to standard cable or track applications. Delete if not required.

F. Tensioned Endcap:

** NOTE TO SPECIFIER ** Textile air dispersion systems can be designed to be quiet, but noise entering the system from air handling units, volume control dampers, or fan-powered boxes can create an uncomfortably noisy environment. The dBSilencer is installed in the occupied space, offering an aesthetically pleasing appearance that can be customized to match your DuctSox System's fabric type and color. Depending on noise absorption required, the dBSilencer is available with or without an
internal bullet and available in diameters 12 inches to 30 inches (305 mm to 762 mm). For more information, see the Silencer brochure on Delete if not required.

G. Fabric Sound Attenuator:

1. Product: DuctSox Silencer.

** NOTE TO SPECIFIER ** Delete bullet type not required.

a. With bullet.

b. Without bullet.

** NOTE TO SPECIFIER ** optional. Delete if not required.

2.3 SOUND ATTENUATOR

A. Test reports: The laboratory method used in conduction these tests in accordance with ASTM Standard E477-2013. Sound pressure level data obtained using a Bruel and Kjar Pulse Analyzer.

B. Acoustical performance data shall be submitted for both dynamic insertion loss and generated noise values for octave band frequencies from 63Hz to 8000Hz.

C. Sound testing to be completed by a NVLAP acoustical testing service accredited third party laboratory.

D. Material meets the flame and smoke development of NFPA 90-A of less than 25 flame and less than 50 smoke development when tested in accordance with ASTM E84.

E. System shall include full 360 degree tension rings with quick connection spacer tubes concealed inside the fabric attenuator.

F. Cylindrical ring on each side shall require a vertical metal to metal cable safety attachment.

G. Available for diameters from 12 inches to 30 inches (305 mm to 762 mm).

H. Attenuator shall have a 5 year warranty.

I. Shop drawings to include thickness, pressure losses, and connection details.

J. Available with and without a bullet.

K. Fabric on outer shell of attenuator to match DuctSox.

L. With a bullet. Based on a 24 inches (610 mm) diameter by 52 inches (1321 mm) length with bullet, the minimum acoustical data must be met: minimum data for DIL and maximum for GN.

M. Performance:

1. Direction: Forward Flow (+).

2. Dynamic Insertion Loss.

3. Generated Noise.

4. Refer to Drawings.

** NOTE TO SPECIFIER ** Delete retention system not required.

2.4 SUSPENSION/FABRIC RETENTION SYSTEMS:

A. Product: Skelecore as manufactured by DuctSox Corporation.

B. Fabric Tensioning System (FTS):

1. Standard: 8 inches to 48 inches diameter (203 mm to 1,219 mm).

2. Jumbo Series: 50 inches to 100 inches diameter (1,270 mm to 2540 mm).

3. Design: 0% Deflation. No inflation noise. No fabric motion.

2.5 FABRIC TENSIONING SYSTEM: SkeleCore FTS.

A. Air diffusers shall be constructed with internal tensioning frame.

B. System shall cylindrically tension textile along the entire length of textile duct, including all fittings (crosses, elbows, reducers and tees).

C. Tensioning system shall include full 360 degree tensioning and intermediate rings with quick connection spacer tubes concealed inside the fabric system.

D. Interior structure to include multiple mechanically adjustable tension devices. To provide proper textile tensioning, structural and textile system shall be configured in segments of no more than 45 feet.

E. Textile components supported solely by metal cylindrical rings.

F. Each cylindrical ring shall require a vertical metal to metal cable safety attachment.

G. Vertical supports are Galvanized steel with available lengths of 5 feet (1524 mm) (standard), 10 feet, 15 feet, & 30 feet (3048 mm, 4572 mm, and 9144 mm).

H. Available for diameters from 8 inches to 84 inches (203 mm to 2134 mm).

** NOTE TO SPECIFIER ** Not available for natatorium applications. Delete if not required.

I. Pull-Tight Tensioning System:

1. Track or Cable: 8 inches to 60 inches diameter (203 mm to 1524 mm).

2. Design: 1% Deflation. No inflation noise. No fabric motion.

2.6 SkeleCore PULL-TIGHT SYSTEM:

A. Air diffusers shall be constructed with both internal retention and external tensioning.

B. System shall consist of internal tensioning baskets with cable or track stops that externally tension the system off of the suspension system selected below along with 360 degree internal retention hoops that are spaced 5 feet (1524 mm) on center between tensioning baskets.

C. Tensioning baskets are designed to self-lock when tension is applied to the system.

D. All straight sections utilize both internal retention hoops and external tensioning with the use of the tension baskets, all fittings (crosses, elbows, reducers, and tees) utilize internal retention hoops.

E. Distance between consecutive tensioning baskets shall not be more than 40 feet (12,192 mm).

F. System shall be installed with a one row suspension system located 1.5 inches (38 mm) above top-dead-center of the textile system.

G. System attachment to cable or U-Track shall be made using Gliders spaced no further than 12 inches (305 mm) apart.

H. Available for diameters from 8 inches to 60 inches (203 mm to 1524 mm).

I. Not available for natatorium applications.

J. One row suspension options (must specify if multiple on same project)

K. Cable suspension hardware to include cable, eye bolts, thimbles, cable clamps, and turnbuckle(s) as required.

1. Cable suspension options (must specify if multiple on same project).

a. Galvanized steel cable

b. Stainless steel cable

2. Support lengths available in 5 feet (1524 mm) (standard), 10 feet, 15 feet, and 30 feet (3048 mm, 4572 mm, and 9144 mm).

L. U-Track suspension hardware to include 8 feet (2438 mm) sections of aluminum track, aluminum splice connectors, track endcaps and vertical cable support kits - consisting of a length of cable with cable connectors. Radius aluminum track must be included for all horizontal/flat radius sections.