Copyright 2016 AIA MasterSpec Premium 09/16

PRODUCT MASTERSPEC LICENSED BY ARCOM TO UNITED ENERTECH.

Copyright 2016 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

This Product MasterSpec Section is licensed by ARCOM to United Enertech ("Licensee").

This Product MasterSpec Section modifies the original MasterSpec text and does not include the full content of the original MasterSpec Section.

Revisions made to the original MasterSpec text are made solely by the Licensee and are not endorsed by, or representative of the opinions of, ARCOM or The American Institute of Architects (AIA). Neither AIA nor ARCOM are liable in any way for such revisions or for the use of this Product MasterSpec Section by any end user. A qualified design professional should review and edit the document to suit project requirements.

For more information, contact United Enertech, 3005 South Hickory Street, Chattanooga, TN 37407 USA; Phone: (423) 698-7715; Fax: (423) 698-6629; Website: www.unitedenertech.com; Email: .

For information about MasterSpec, contact ARCOM at (800) 424-5080 or visit www.MasterSpec.com.

SECTION 233300 - AIR DUCT ACCESSORIES

TIPS:

To view non-printing Editor's Notes that provide guidance for editing, click on MasterWorks/Single-File Formatting/Toggle/Editor's Notes.

To read detailed research, technical information about products and materials, and coordination checklists, click on MasterWorks/Supporting Information.

Revise this Section by deleting and inserting text to meet Project-specific requirements.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1  RELATED DOCUMENTS

Retain or delete this article in all Sections of Project Manual.

  1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division01 Specification Sections, apply to this Section.

1.2  SUMMARY

  1. Section Includes:
  2. Backdraft and pressure relief dampers.
  3. Barometric relief dampers.
  4. Manual volume dampers.
  5. Control dampers.
  6. Fire dampers.
  7. Ceiling radiation dampers.
  8. Smoke dampers.
  9. Combination fire and smoke dampers.
  10. Corridor dampers.
  11. Flange connectors.
  12. Duct silencers.
  13. Turning vanes.
  14. Remote damper operators.
  15. Duct-mounted access doors.
  16. Flexible connectors.
  17. Duct security bars.
  18. Duct accessory hardware.
  19. Related Requirements:

Retain subparagraphs below to cross-reference requirements Contractor might expect to find in this Section but are specified in other Sections.

  1. Section233346 "Flexible Ducts" for insulated and non-insulated flexible ducts.
  2. Section233723 "HVAC Gravity Ventilators" for roof-mounted ventilator caps.

Retain one of two subparagraphs below.

  1. Section284621.11 "Addressable Fire-Alarm Systems" for duct-mounted fire and smoke detectors.
  2. Section284621.13 "Conventional Fire-Alarm Systems" for duct-mounted fire and smoke detectors.

1.3  ACTION SUBMITTALS

  1. Product Data: For each type of product.
  2. For duct silencers, include pressure drop and dynamic insertion loss data. Include breakout noise calculations for high transmission loss casings.
  3. Sustainable Design Submittals:

"Product Data" Subparagraph below applies to LEED 2009 NC, CI, CS, and LEED for Schools; LEEDv4; IgCC; ASHRAE189.1; and Green Globes.

  1. Product data showing compliance with ASHRAE62.1.
  2. Shop Drawings: For duct accessories. Include plans, elevations, sections, details and attachments to other work.
  3. Detail duct accessories fabrication and installation in ducts and other construction. Include dimensions, weights, loads, and required clearances; and method of field assembly into duct systems and other construction. Include the following:
  4. Special fittings.
  5. Manual volume damper installations.
  6. Control-damper installations.
  7. Fire-damper, smoke-damper, combination fire- and smoke-damper, ceiling, and corridor damper installations, including sleeves; and duct-mounted access doors and remote damper operators.
  8. Duct security bars.

Retain "Wiring Diagrams" Subparagraph below if equipment includes wiring.

  1. Wiring Diagrams: For power, signal, and control wiring.

1.4  INFORMATIONAL SUBMITTALS

Retain "Coordination Drawings" Paragraph below for situations where limited space necessitates maximum utilization for efficient installation of different components or if coordination is required for installation of products and materials by separate installers. Preparation of coordination drawings requires the participation of each trade involved in installations within the limited space.

  1. Coordination Drawings: Reflected ceiling plans, drawn to scale, on which ceiling-mounted access panels and access doors required for access to duct accessories are shown and coordinated with each other, using input from Installers of the items involved.

Retain "Source quality-control reports" Paragraph below if retaining "Source Quality Control" Paragraph in "Duct Silencers" Article.

  1. Source quality-control reports.

1.5  CLOSEOUT SUBMITTALS

  1. Operation and Maintenance Data: For air duct accessories to include in operation and maintenance manuals.

1.6  MAINTENANCE MATERIAL SUBMITTALS

  1. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.
  2. Fusible Links: Furnish quantity equal to [10] <Insert number> percent of amount installed.

PART 2 - PRODUCTS

Manufacturers and products listed in SpecAgent and MasterWorks Paragraph Builder are neither recommended nor endorsed by the AIA or ARCOM. Before inserting names, verify that manufacturers and products listed there comply with requirements retained or revised in descriptions and are both available and suitable for the intended applications. For definitions of terms and requirements for Contractor's product selection, see Section016000 "Product Requirements."

2.1  ASSEMBLY DESCRIPTION

  1. Comply with NFPA90A, "Installation of Air Conditioning and Ventilating Systems," and with NFPA90B, "Installation of Warm Air Heating and Air Conditioning Systems."
  2. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods unless otherwise indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains, discolorations, and other imperfections.

2.2  MATERIALS

  1. Galvanized Sheet Steel: Comply with ASTMA653/A653M.
  2. Galvanized Coating Designation: [G60 (Z180)] [G90 (Z275)].
  3. Exposed-Surface Finish: Mill phosphatized.
  4. Stainless-Steel Sheets: Comply with ASTMA480/A480M, Type304, and having a [No.2] <Insert finish designation> finish for concealed ducts and <Insert finish designation> finish for exposed ducts.
  5. Aluminum Sheets: Comply with ASTMB209 (ASTMB209M), Alloy3003, TemperH14; with mill finish for concealed ducts and standard, 1-side bright finish for exposed ducts.
  6. Extruded Aluminum: Comply with ASTMB221 (ASTMB221M), Alloy6063, TemperT6.
  7. Reinforcement Shapes and Plates: Galvanized-steel reinforcement where installed on galvanized sheet metal ducts; compatible materials for aluminum and stainless-steel ducts.
  8. Tie Rods: Galvanized steel, 1/4-inch (6-mm) minimum diameter for lengths 36 inches (900 mm) or less; 3/8-inch (10-mm) minimum diameter for lengths longer than 36 inches (900 mm).

2.3  BACKDRAFT AND PRESSURE RELIEF DAMPERS

Copy this article and re-edit for each type of backdraft and pressure relief damper.

Retain "Basis-of-Design Product" Paragraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed.

  1. Basis-of-Design Product: Subject to compliance with requirements, provide United Enertech; [CB-600] [CB-601] [HCB-700] [ICB-750] [ICB-800] [ICB-900] [RCD] [I-900-F] [BF] [CD] [I-200-C] [I-200-F] or comparable products by one of the following:
  2. American Warming and Ventilating; a Mestek Architectural Group company.
  3. Cesco Products; a division of MESTEK, Inc.
  4. Flex-Tek Group.
  5. Greenheck Fan Corporation.
  6. Lloyd Industries, Inc.
  7. Nailor Industries Inc.
  8. NCA Manufacturing, Inc.
  9. Pottorff.
  10. Ruskin Company.
  11. Safe Air - Dowco Products.
  12. Vent Products Co., Inc.
  13. Insert manufacturer's name>.
  14. Description: Gravity balanced.
  15. Maximum Air Velocity: [1000 fpm (5.1m/s)] [1250 fpm (6.4m/s)] [2000 fpm (10m/s)] [3000 fpm (15m/s)] <Insert value>.
  16. Maximum System Pressure: [1-inch wg (0.25 kPa)] [2-inch wg (0.5 kPa)] [3-inch wg (0.8 kPa)] [6-inch wg (1.5 kPa)] <Insert value>.
  17. Frame: Hat-shaped, [0.05-inch- (1.3-mm-) thick, galvanized sheet steel] [0.094-inch- (2.4-mm-) thick, galvanized sheet steel] [0.06-inch- (1.52-mm-) thick extruded aluminum] [0.03-inch- (0.8-mm-) thick stainless steel] [0.05-inch- (1.3-mm-) thick stainless steel], with welded corners or mechanically attached[and mounting flange].
  18. Blades: Multiple single-piece blades, [center pivoted,] [off-center pivoted,] [end pivoted,] maximum 6-inch (150-mm) width, [0.045-inch- (1.14-mm-) thick, roll-formed aluminum] [0.050-inch- (1.2-mm-) thick aluminum sheet] with sealed edges.
  19. Blade Action: Parallel.
  20. Blade Seals: [Felt] [Vinyl foam] [Extruded vinyl, mechanically locked] [Neoprene, mechanically locked].
  21. Blade Axles:
  22. Material: [Nonferrous metal] [Galvanized steel] [Plated steel] [Stainless steel] [Nonmetallic] [Aluminum].
  23. Diameter: [0.20 inch (5 mm)] <Insert value>.
  24. Tie Bars and Brackets: [Aluminum] [Galvanized steel].
  25. Return Spring: Adjustable tension.
  26. Bearings: [Steel ball] [or] [synthetic pivot bushings].
  27. Accessories:
  28. Adjustment device to permit setting for varying differential static pressure.
  29. Counterweights and spring-assist kits for vertical airflow installations.
  30. Electric actuators.
  31. Chain pulls.

Retain one of two "Screen Mounting" subparagraphs below.

  1. Screen Mounting: Front mounted in sleeve.
  2. Sleeve Thickness: 20 gage (1.0 mm) minimum.
  3. Sleeve Length: 6 inches (152 mm) minimum.
  4. Screen Mounting: Rear mounted.
  5. Screen Material: [Galvanized steel] [Aluminum].
  6. Screen Type: [Bird] [Insect].
  7. 90-degree stops.

2.4  BAROMETRIC RELIEF DAMPERS

Retain "Basis-of-Design Product" Paragraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed.

  1. Basis-of-Design Product: Subject to compliance with requirements, provide United Enertech; [CB-600] [CB-601] [HCB-700] [ICB-750] [ICB-800] [ICB-900] [ICB-950] [RCD] [CD] or comparable products by one of the following:
  2. American Warming and Ventilating; a Mestek Architectural Group company.
  3. Cesco Products; a division of MESTEK, Inc.
  4. Greenheck Fan Corporation.
  5. Lloyd Industries, Inc.
  6. Nailor Industries Inc.
  7. NCA Manufacturing, Inc.
  8. Pottorff.
  9. Ruskin Company.
  10. Safe Air - Dowco Products.
  11. Vent Products Co., Inc.
  12. Insert manufacturer's name>.
  13. Suitable for horizontal or vertical mounting.
  14. Maximum Air Velocity: [2400 fpm (12.2m/s)] [3000 fpm (15.2m/s)] [4000 fpm (20.3m/s)] [5000 fpm (25.4m/s)] <Insert value>.
  15. Maximum System Pressure: [3-inch wg (0.75 kPa)] [4-inch wg (1.0 kPa)] [6-inch wg (1.5 kPa)] [8.5-inch wg (2.1 kPa)] <Insert value>.
  16. Frame: Hat-shaped, [0.05-inch- (1.3-mm-) thick, galvanized sheet steel] [0.094-inch- (2.4-mm-) thick, galvanized sheet steel] [0.063-inch- (1.6-mm-) thick extruded aluminum] [0.03-inch- (0.8-mm-) thick stainless steel] [0.05-inch- (1.3-mm-) thick stainless steel], with welded corners or mechanically attached[and mounting flange].
  17. Blades:
  18. Multiple, [0.025-inch- (0.6-mm-) thick, roll-formed aluminum] [0.050-inch- (1.2-mm-) thick aluminum sheet].
  19. Maximum Width: 6 inches (150 mm).
  20. Action: Parallel.
  21. Balance: Gravity.
  22. [Eccentrically pivoted] [Off-center pivoted] [End pivoted].
  23. Blade Seals: [Vinyl] [Neoprene].
  24. Blade Axles: [Galvanized steel] [Nonferrous metal] [Plated steel] [Stainless steel] [Nonmetallic].
  25. Tie Bars and Brackets:
  26. Material: [Aluminum] [Galvanized steel].
  27. Rattle free with 90-degree stop.
  28. Return Spring: Adjustable tension.
  29. Bearings: [Synthetic] [Stainless steel] [Bronze].
  30. Accessories:
  31. Flange on intake.
  32. Adjustment device to permit setting for varying differential static pressures.
  33. Insert accessories>.

2.5  MANUAL VOLUME DAMPERS

Show dampers on Drawings. If both standard and low-leakage volume dampers are required, identify each damper type on Drawings.

  1. Standard, Steel, Manual Volume Dampers:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed.

  1. Basis-of-Design Product: Subject to compliance with requirements, provide United Enertech; [MD-115] [MD-116] [EB] [RD] [ED] [R-PB] [R-OB] [DW] or comparable products by one of the following:
  2. Aire Technologies.
  3. American Warming and Ventilating; a Mestek Architectural Group company.
  4. Flexmaster U.S.A., Inc.
  5. Flex-Tek Group.
  6. McGill AirFlow LLC.
  7. Nailor Industries Inc.
  8. Pottorff.
  9. Ruskin Company.
  10. Safe Air - Dowco Products.
  11. Trox USA Inc.
  12. Vent Products Co., Inc.
  13. Insert manufacturer's name>.
  14. Standard leakage rating[,with linkage outside airstream].
  15. Suitable for horizontal or vertical applications.
  16. Frames:
  17. Frame: Hat-shaped, [0.0375-inch- (0.95-mm-) thick, galvanized sheet steel] [0.0625-inch- (1.59-mm-) thick stainless steel].
  18. Mitered and welded corners.
  19. Flanges for attaching to walls and flangeless frames for installing in ducts.
  20. Blades:
  21. Multiple or single blade.
  22. Parallel- or opposed-blade design.
  23. Stiffen damper blades for stability.
  24. [Galvanized] [Stainless]-steel, 0.064 inch (1.62 mm) thick.
  25. Blade Axles: [Galvanized steel] [Stainless steel] [Nonferrous metal].
  26. Bearings:
  27. [Oil-impregnated bronze] [Molded synthetic] [Stainless-steel sleeve].
  28. Tie Bars and Brackets: Galvanized steel.

Retain "Standard, Aluminum, Manual Volume Dampers" Paragraph below for aluminum ducts. Coordinate with "Installation" Article and Section233113 "Metal Ducts."

  1. Standard, Aluminum, Manual Volume Dampers:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed.

  1. Basis-of-Design Product: Subject to compliance with requirements, provide United Enertech; [MD-105] [MD-106] [SB] or comparable products by one of the following:
  2. American Warming and Ventilating; a Mestek Architectural Group company.
  3. McGill AirFlow LLC.
  4. Nailor Industries Inc.
  5. Pottorff.
  6. Ruskin Company.
  7. Safe Air - Dowco Products.
  8. Trox USA Inc.
  9. Vent Products Co., Inc.
  10. Insert manufacturer's name>.
  11. Standard leakage rating[,with linkage outside airstream].
  12. Suitable for horizontal or vertical applications.
  13. Frames: Hat-shaped, 0.081-inch- (2.06-mm-) thick, aluminum sheet channels; frames with flanges for attaching to walls and flangeless frames for installing in ducts.
  14. Blades:
  15. Multiple or single blade.
  16. Parallel- or opposed-blade design.
  17. Stiffen damper blades for stability.
  18. Extruded-Aluminum Blades: 0.081-inch- (2.06-mm-) thick extruded aluminum.
  19. Blade Axles: [Galvanized steel] [Stainless steel] [Nonferrous metal].
  20. Bearings:
  21. [Oil-impregnated bronze] [Molded synthetic] [Stainless-steel sleeve].
  22. Dampers in ducts with pressure classes of 3-inch wg (750 Pa) or less shall have axles full length of damper blades and bearings at both ends of operating shaft.
  23. Tie Bars and Brackets: Aluminum.
  24. Low-Leakage, Steel, Manual Volume Dampers:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed.

  1. Basis-of-Design Product: Subject to compliance with requirements, provide United Enertech; [CD-110] [CD-111] [CD-160] [CD-161] or comparable products by one of the following:
  2. American Warming and Ventilating; a Mestek Architectural Group company.
  3. Elgen Manufacturing.
  4. Flex-Tek Group.
  5. McGill AirFlow LLC.
  6. Nailor Industries Inc.
  7. Pottorff.
  8. Ruskin Company.
  9. Safe Air - Dowco Products.
  10. Trox USA Inc.
  11. Vent Products Co., Inc.
  12. Insert manufacturer's name>.
  13. Comply with AMCA500-D testing for damper rating.

Manufacturers having products tested in AMCA-accredited laboratories, with test results verified by AMCA staff, and having obtained the proper license from AMCA, can offer products bearing AMCA's Certified Ratings Seal for air performance or air leakage, or both. Verify availability with manufacturers retained in list above.

  1. Low-leakage rating[,with linkage outside airstream,] and bearing AMCA's Certified Ratings Seal for both air performance and air leakage.
  2. Suitable for horizontal or vertical applications.
  3. Frames:
  4. [Hat] [U] [Angle] shaped.
  5. [0.05-inch- (1.3-mm-) thick, galvanized sheet steel] [0.05-inch- (1.3-mm-) thick stainless steel].
  6. Flanges for attaching to walls and flangeless frames for installing in ducts.
  7. Blades:
  8. Multiple or single blade.
  9. Parallel- or opposed-blade design.
  10. Stiffen damper blades for stability.
  11. [Galvanized] [Stainless], roll-formed steel, 0.062 inch (1.57 mm) thick.
  12. Blade Axles: [Galvanized steel] [Stainless steel] [Nonferrous metal].
  13. Bearings:
  14. [Oil-impregnated bronze] [Molded synthetic] [Oil-impregnated stainless-steel sleeve] [Stainless-steel sleeve].
  15. Dampers in ducts with pressure classes of 3-inch wg (750 Pa) or less shall have axles full length of damper blades and bearings at both ends of operating shaft.
  16. Blade Seals: [Felt] [Vinyl] [Neoprene].
  17. Jamb Seals: Cambered [stainless steel] [aluminum].
  18. Tie Bars and Brackets: [Galvanized steel] [Aluminum].
  19. Accessories:
  20. Include locking device to hold single-blade dampers in a fixed position without vibration.

Retain "Low-Leakage, Aluminum, Manual Volume Dampers" Paragraph below for aluminum ducts. Coordinate with "Installation" Article and Section233113 "Metal Ducts."