36C25622R0094 233700 AIR OUTLETS AND INLETS.docx
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- Z2DA--Project #502-19-107 - Replace AHU-104 - Construction - 36C25622R0094 Federal contract opportunity
- Solicitation number
- 502-19-107
About this file
This document outlines specifications for air outlets and inlets required for a project to replace an air handling unit and ductwork at a Department of Veterans Affairs health care facility in Alexandria, Louisiana. The specifications cover materials, performance testing, and types of air supply outlets, return and exhaust registers, wire mesh grilles, and filter return/exhaust grilles required. Installation, testing, adjusting and balancing, and operating requirements are also defined. The related federal contract opportunity is a solicitation to provide construction services for the project including replacing AHU-104 and ductwork at the VA facility in Alexandria, Louisiana, under solicitation number 502-19-107.
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Text version
REPLACE AHU #104 AND DUCTWORK BLDG. 7
DEPARTMENT OF VETERANS AFFAIRS HEALTH CARE SYSTEM-ALEXANDRIA, LA
PROJECT NO.: 502-19-107
SECTION 23 37 00
AIR OUTLETS AND INLETS
PART 1 GENERAL
1.1 DESCRIPTION
A. Air Outlets and Inlets: Diffusers, Registers, and Grilles.
1.2 RELATED WORK
| A. | Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES. |
| B. | Section 08 90 00, LOUVERS and VENTS. |
| C. | Section 23 05 11, COMMON WORK RESULTS FOR HVAC and STEAM GENERATION. |
| D. | Section 23 05 41, NOISE and VIBRATION CONTROL FOR HVAC PIPING and EQUIPMENT. |
| E. | Section 23 05 93, TESTING, ADJUSTING, and BALANCING FOR HVAC. |
1.3 QUALITY ASSURANCE
| A. | Refer to Article, QUALITY ASSURANCE, in Section 23 05 11, COMMON WORK RESULTS FOR HVAC. |
| B. | Fire Safety Code: Comply with NFPA 90A. |
1.4 SUBMITTALS
| A. | Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES. |
| B. | Manufacturer's Literature and Data: |
| 1. | Air intake/exhaust hoods. |
| 2. | Diffusers, registers, grilles and accessories. |
| C. | Coordination Drawings: Refer to article, SUBMITTALS, in Section 23 05 11, COMMON WORK RESULTS FOR HVAC. |
1.5 APPLICABLE PUBLICATIONS
| A. | The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. |
| B. | Air Diffusion Council Test Code: |
| 1062 GRD-2015 | Certification, Rating, and Test Manual 4th Edition |
| C. | American Society of Civil Engineers (ASCE): |
| ASCE7-2017 | Minimum Design Loads for Buildings and Other Structures |
| D. | American Society for Testing and Materials (ASTM): |
| A16799 2009 | Standard Specification for Stainless and HeatResisting ChromiumNickel Steel Plate, Sheet and Strip |
| B209 2014 | Standard Specification for Aluminum and AluminumAlloy Sheet and Plate |
| E. | National Fire Protection Association (NFPA): |
| 90A-2018 | Standard for the Installation of Air Conditioning and Ventilating Systems |
| F. | Underwriters Laboratories, Inc. (UL): |
| 1812013 | UL Standard for Safety FactoryMade Air Ducts and Connectors |
PART 2 PRODUCTS
2.1 EQUIPMENT SUPPORTS
Refer to Section 23 05 11, COMMON WORK RESULTS FOR HVAC.
2.2 AIR OUTLETS AND INLETS
| A. | Materials: |
| 1. | Aluminum. Exhaust air registers located in combination toilets and shower stalls shall be constructed from aluminum. Provide manufacturer's standard gasket. |
| 2. | Exposed Fastenings: The same material as the respective inlet or outlet. Fasteners for aluminum may be stainless steel. |
| 3. | Contractor shall review all ceiling drawings and details and provide all ceiling mounted devices with appropriate dimensions and trim for the specific locations. |
| B. | Performance Test Data: In accordance with Air Diffusion Council Code 1062GRD. Refer to Section 23 05 41, NOISE and VIBRATION CONTROL FOR HVAC PIPING and EQUIPMENT for NC criteria. |
| C. | Air Supply Outlets: |
| 1. | Ceiling Diffusers: Suitable for surface mounting, exposed Tbar or special tile ceilings, offwhite finish, square or round neck connection as shown on the drawings. Provide plaster frame for units in plaster ceilings. |
| a. | Square, louver, fully adjustable pattern: Round neck, surface mounting unless shown otherwise on the drawings. Provide equalizing or control grid and volume control damper. |
| b. | Louver face type: Square or rectangular, removable core for 1-, 2-, 3-, or 4-way directional pattern. Provide equalizing or control grid and opposed blade damper. |
| 2. | Supply Registers: Double deflection type with horizontal face bars and opposed blade damper with removable key operator. |
| a. | Margin: Flat, 30 mm (11/4 inches) wide. |
| b. | Bar spacing: 20 mm (3/4 inch) maximum. |
| c. | Finish: Off white baked enamel for ceiling mounted units. Wall units shall have a prime coat for field painting or shall be extruded with manufacturer's standard finish. |
| D. | Return and Exhaust Registers and Grilles: Provide opposed blade damper without removable key operator for registers. |
| 1. | Finish: Offwhite baked enamel for ceiling mounted units. Wall units shall have a prime coat for field painting or shall be extruded aluminum with manufacturer's standard aluminum finish. |
| 2. | Standard Type: Fixed horizontal face bars set at 30 to 45 degrees, approximately 30 mm (11/4 inch) margin. |
| 3. | Perforated Face Type: To match supply units. |
| 4. | Grid Core Type: 13 mm by 13 mm (1/2 inch by 1/2 inch) core with 30 mm (11/4 inch) margin. |
| 5. | Linear Type: To match supply units. |
| 6. | Egg Crate Grilles: Aluminum or Painted Steel 1/2 by 1/2 by 1/2 inch grid providing 90% free area. |
| a. | Heavy extruded aluminum frame shall have countersunk screw mounting. Unless otherwise indicated, register blades and frame shall have factory applied white finish. |
| b. | Grille shall be suitable for duct or surface mounting as indicated on drawings. All necessary appurtenances shall be provided to allow for mounting. |
| E. | Acoustic Transfer Grille: Aluminum, suitable for partition or wall mounting. |
2.3 WIRE MESH GRILLE
| A. | Fabricate grille with 2 x 2 mesh 13 mm (1/2 inch) galvanized steel or aluminum hardware cloth in a spot-welded galvanized steel frame with approximately 40 mm (11/2 inch) margin. |
| B. | Use grilles where shown in unfinished areas such as mechanical rooms. |
2.5 Filter return/exhaust grille
| A. | Provide grille within stream 1-inch-deep MERV 4 filter and removable face. |
| 1. | Finish: Offwhite baked enamel for ceiling mounted units. Wall units shall have a prime coat for field painting or shall be extruded aluminum with manufacturer's standard aluminum finish. Stainless Steel shall be No. 4 finish. |
| 2. | Standard Type: Fixed horizontal face bars set at 30 to 45 degrees, approximately 30 mm (11/4 inch) margin. |
| 3. | Steel, Aluminum, or Stainless steel as scheduled. |
| 4. | Standard face connected to a mounting frame with space for a throwaway filter. Hold face closed by a locking screw. Provide retaining clips to hold filter in place. Provide fiberglass throwaway filter. |
part 3 - execution
3.1 INSTALLATION
| A. | Comply with provisions of Section 23 05 11, COMMON WORK RESULTS FOR HVAC AND STEAM GENERATION, particularly regarding coordination with other trades and work in existing buildings. |
| B. | Protection and Cleaning: Protect equipment and materials against physical damage. Place equipment in first class operating condition or return to source of supply for repair or replacement, as determined by Resident Engineer. Protect equipment during construction against entry of foreign matter to the inside and clean both inside and outside before operation and painting. |
3.2 testing, adjusting and balancing (tab) Refer to Section 23 05 93, TESTING, ADJUSTING, and BALANCING FOR HVAC.
3.3 operating and performance tests Refer to Section 23 05 11, COMMON WORK RESULTS FOR HVAC.
E N D
23 37 00 - 1
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