VA 23 37 00-2009 AIR OUTLETS AND INLETS.pdf

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1、11-09 23 37 00 - 1 SECTION 23 37 00 AIR OUTLETS AND INLETS SPEC WRITER NOTE: 1. Delete between /-/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION A. Roof Curbs B. Air Outlets and Inlets

2、: Diffusers, Registers, and Grilles. 1.2 RELATED WORK A. Outdoor and Exhaust Louvers: Section 08 90 00, LOUVERS AND VENTS. B. Kitchen Hoods: Section 23 38 13, COMMERCIAL-KITCHEN HOODS. C. Fume Hoods: Section 11 53 13, LABORATORY FUME HOODS. D. Seismic Reinforcing: Section 13 05 41, SEISMIC RESTRAINT

3、 REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS. E. General Mechanical Requirements: Section 23 05 11, COMMON WORK RESULTS FOR HVAC AND STEAM GENERATION. F. Noise Level Requirements: Section 23 05 41, NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT. G. Testing and Balancing of Air Flows: Secti

4、on 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 AND STEAM GENERATION. B. Fire Safety Code: Comply with NFPA 90A. 1.4 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP

5、 DRAWINGS, PRODUCT DATA, and SAMPLES. B. Manufacturers 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 AND STEAM GENERATION. 1.5 APPLICABLE PU

6、BLICATIONS 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: Provided by IHSNot for ResaleNo reproduction or networking permitted without license

7、from IHS-,-,-11-09 23 37 00 - 2 1062 GRD-84.Certification, Rating, and Test Manual 4thEdition C. American Society of Civil Engineers (ASCE): ASCE7-05Minimum Design Loads for Buildings and Other Structures D. American Society for Testing and Materials (ASTM): A167-99 (2004)Standard Specification for

8、Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet and Strip B209-07.Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate E. National Fire Protection Association (NFPA): 90A-09Standard for the Installation of Air Conditioning and Ventilating Systems F. Underwriters Lab

9、oratories, Inc. (UL): 181-08UL Standard for Safety Factory-Made Air Ducts and Connectors PART 2 - PRODUCTS 2.1 GRAVITY INTAKE/EXHAUST VENTILATORS (ROOF MOUNTED) A. Aluminum, ASTM B209, louvered, spun, or fabricated using panel sections with roll-formed edges, 13 mm (1/2 inch) mesh aluminum welded wi

10、re bird screen, with gravity or motorized dampers where shown, accessible interior, designed for wind velocity specified in Paragraph 3.3. 1. Spun Intake/Exhaust Ventilators: Spun aluminum structural components shall be constructed of minimum 1.3 mm (16 Gauge) marine alloy aluminum, bolted to a rigi

11、d aluminum support structure. The aluminum base shall have continuously welded curb cap corners for maximum leak protection. The spun aluminum baffle shall have a rolled bead for added strength. 2. Louvered Intake/Exhaust Hoods: Louvered hood constructed from 0.081 Gauge extruded aluminum tiers weld

12、ed to a minimum 3.3 mm (8 Gauge) aluminum support structure. The aluminum hood shall be constructed of a minimum 0.064 marine alloy aluminum and provided with a layer of anti-condensate coating. The aluminum base shall have continuously welded curb cap corners for maximum leak protection. 3. Low Sil

13、houette Intake/Exhaust Ventilator: The unit shall be of bolted and welded construction utilizing corrosion resistant fasteners. The aluminum hood shall be constructed of minimum 1.60 mm (14 Gauge) marine alloy aluminum, bolted to a minimum 3.25 mm (8 Gauge) aluminum support structure. The aluminum b

14、ase shall have continuously welded Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-09 23 37 00 - 3 curb cap corners for maximum leak protection. Birdscreen constructed of 13 mm (1/2 inch) mesh shall be mounted across the relief opening. B. See ven

15、tilator schedule on the drawings. Sizes shown on the drawings designate throat size. Area of ventilator perimeter opening shall be not less than the throat area. C. Dampers for Gravity Ventilators without Duct Connection: Construct damper of the same material as the ventilator and of the design to c

16、ompletely close opening or remain wide open. Hold damper in closed position by a brass chain and catch. Extend chains 300 mm (12 inches) below and engage catch when damper is closed. /D. See paragraph 3.3 for Intake/Exhaust exposed to high wind velocities. / E. Provide Roof Curb by unit manufacturer

17、. Refer to Section 23 05 11, COMMON WORK RESULTS FOR HVAC AND STEAM GENERATION for additional requirements. 2.2 EQUIPMENT SUPPORTS Refer to Section 21 05 11, COMMON WORK RESULTS FOR FIRE SUPPRESSION, Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING, and Section 23 05 11, COMMON WORK RESULTS FOR HV

18、AC AND STEAM GENERATION. SPEC WRITER NOTE: Edit or delete distribution plate to suit project. 2.3 AIR OUTLETS AND INLETS A. Materials: 1. Steel or aluminum / except that all supply air outlets installed in operating rooms and Cystoscopy rooms (see Article 2.3C.3) shall be stainless steel. Use alumin

19、um air outlets and inlets for facilities located in high-humidity areas. Exhaust air registers located in combination toilets and shower stalls shall be constructed from aluminum. /. Provide manufacturers standard gasket. 2. Exposed Fastenings: The same material as the respective inlet or outlet. Fa

20、steners 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

21、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 T-bar or special tile ceilings, off-white finish, square or round neck Provided by IHSNot for ResaleNo reproduction or netw

22、orking permitted without license from IHS-,-,-11-09 23 37 00 - 4 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 g

23、rid 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. c. Perforated face type: Manual adjustment for one-, two-, three-, or four-way horizontal air distribution

24、 pattern without change of air volume or pressure. Provide equalizing or control grid and opposed blade over overlapping blade damper. Perforated face diffusers for VAV systems shall have the pattern controller on the inner face, rather than in the neck and designed to discharge air horizontally at

25、the ceiling maintaining a Coanda effect. SPEC WRITER NOTE: Make sure slot diffuser boots are insulated externally in addition to factory installed lined insulation to match the duct insulation. d. Slot diffuser/plenum: 1) Diffuser: Frame and support bars shall be constructed of heavy gauge extruded

26、aluminum. Form slots or use adjustable pattern controllers, to provide stable, horizontal air flow pattern over a wide range of operating conditions. 2) Galvanized steel boot lined with 13 mm (1/2 inch) thick fiberglass conforming to NFPA 90A and complying with UL 181 for erosion. The internal linin

27、g shall be factory-fabricated, anti-microbial, and non-friable. 3) Provide inlet connection diameter equal to duct diameter shown on drawings or provide transition coupling if necessary. Inlet duct and plenum size shall be as recommended by the manufacturer. 4) Maximum pressure drop at design flow r

28、ate: 37 Pa (0.15 inch W.G.) /2. Linear Bar Grilles and Diffusers: Extruded aluminum, manufacturers standard finish, and positive holding concealed fasteners. a. Margin Frame: Flat, 20 mm (3/4 inch) wide. b. Bars: Minimum 5 mm (3/16 inch) wide by 20 mm (3/4 inch) deep, zero deflection unless otherwis

29、e shown. Bar spacing shall be a minimum of 3 mm (1/8 inch) on center. Reinforce bars on 450 mm (18 inch) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-09 23 37 00 - 5 center for sidewall units and on 150 mm (6 inch) center for units installed in

30、 floor or sills. c. Provide opposed blade damper and equalizing or control grid where shown /. 3. Operating Room Air Distribution Devices: a. Devices shall consist of a non-aspirating perforated panel center air supply providing downward airflow over the operating table and fixed nonadjustable multi

31、ple slot perimeter panels surrounding the operating table area to provide an air curtain which shall be projected outward from the operating table area at not less than a five degree angle nor more than a 15 degree angle. Velocity of air distribution at operating table height shall not exceed 12 m/m

32、in (40 feet per minute) for the center supply or 15 m/min (50 feet per minute) for the air curtain. Perforated pressure plates shall be provided over the perimeter and center air distribution faces to equalize pressure and airflow throughout the system. b. All components of the system inside the ope

33、rating room shall be fabricated of 1.0 mm (20 Gauge) thick 18-8 stainless steel (ASTM A167), No. 4 finish, and outside the operating room shall be of the manufacturers standard aluminum finish. All distribution components and pressure plates shall be attached to the face panels at both the perimeter

34、 and center. The face panels shall be retained with 1/4 turn fasteners. Plenums shall be supplied by the manufacturer and shall be sized to permit them to be easily wiped out by hand with germicidal solution for sterilization purposes and all horizontal corners of the plenums shall have a minimum ra

35、dius of 20 mm (3/4 inch). Connecting elbows shall be radialized and be sized to permit manual sterilization of the plenums. 4. Supply Registers: Double deflection type with horizontal face bars and opposed blade damper with removable key operator. a. Margin: Flat, 30 mm (1-1/4 inches) wide. b. Bar s

36、pacing: 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 manufacturers standard finish. 5. Supply Grilles: Same as registers but without the opposed blade damper. DESIGNERS NOTE: 1.

37、 Drum Louvers are typically provided in high bay/Long throw applications. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-09 23 37 00 - 6 6. Drum Louvers: Aluminum construction, drum louver, with pivoted blades and rotating drum to adjust length o

38、f throw and direction. a. Register shall have integral; face adjustable, opposed blade damper constructed of heavy gauge steel. Damper shall be operable from the face of the register. Units shall be nozzle type with adjustable discharge pattern. DESIGNERS NOTE: 1. Designed for medium throw with low

39、air volumes. 7. Jet Diffusers: Aluminum construction (nozzle and frame) suitable for wall or ceiling mounting or direct mounting on ducts. D. Return and Exhaust Registers and Grilles: Provide opposed blade damper without removable key operator for registers. DESIGNERS NOTE: 1. Oversize grilles to re

40、duce static pressure drop. 2. Grilles must be selected in standard sizes (i.e. 12 inch x 12 inch or 24 inch x 24 inch). 1. Finish: Off-white baked enamel for ceiling mounted units. Wall units shall have a prime coat for field painting, or shall be extruded aluminum with manufacturers standard alumin

41、um finish. 2. Standard Type: Fixed horizontal face bars set at 30 to 45 degrees, approximately 30 mm (1-1/4 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 (1-1/4 inch) margin. 5. Linear Type: To match supply unit

42、s. 6. Door Grilles: Are furnished with the doors. 7. 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 appl

43、ied 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. Supply Registers in Psychiatric Rooms: Supply air registers shall be security type, steel with perforated faceplate, flat surfa

44、ce margin, extension sleeve, opposed blade damper and back mounting flanges. Faceplate shall be 5 mm (3/16 inch) (minimum) with 5x5 mm holes on 7 mm (3/16 by 3/16 inch holes on 9/32 inch) spacing and a minimum free Provided by IHSNot for ResaleNo reproduction or networking permitted without license

45、from IHS-,-,-11-09 23 37 00 - 7 area of 45 percent. Wall sleeve shall be 5 mm (3/16 inch) thick (minimum). F. Air Inlet Registers in Psychiatric Rooms: Return, exhaust, transfer and relief air registers shall be security type, steel with perforated faceplate, flat surface margin, wall sleeve, oppose

46、d blade damper and back mounting flanges. Faceplate shall be 5 mm (3/16 inch) (minimum) with 5x5 mm holes on 7 mm (3/16 by 3/16 inch holes on 9/32 inch) spacing and a minimum free area of 45 percent. Wall sleeve shall be 5 mm (3/16 inch) thick (minimum). G. Acoustic Transfer Grille: Aluminum, suitab

47、le for partition or wall mounting. 2.4 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 (1-1/2 inch) margin. B. Use grilles where shown in unfinished areas such as mechan

48、ical rooms. 2.5 FILTER RETURN/EXHAUST GRILLE A. Provide grille with in stream 1-inch deep MERV 4 filter and removable face. 1. Finish: Off-white baked enamel for ceiling mounted units. Wall units shall have a prime coat for field painting, or shall be extruded aluminum with manufacturers standard al

49、uminum finish. Stainless Steel shall be No. 4 finish. 2. Standard Type: Fixed horizontal face bars set at 30 to 45 degrees, approximately 30 mm (1-1/4 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 fibergla