233713_Diffusers_Registers_and_Grilles_GS_June_2014.pdf

CONSTRUCTION ISSUE

Architectural & Refrigeration Upgrade

Commissary - Fort Myer, VA 28 Apr 2015

DIFFUSERS, REGISTERS, AND GRILLES

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SECTION 23 37 13

DIFFUSERS, REGISTERS, AND GRILLES

(Edited from DeCA June 2014 Design Criteria)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Diffusers.

2. Registers/grilles.

B. Related Sections:

1. Division 01 Section Mechanical, Refrigeration, Food Service Equipment and Electrical Coordination.

2. Division 01 Section Quality Control.

3. Division 01 Section Closeout Procedures.

4. Division 23 Section Hangers and Supports for HVAC Piping and Equipment.

1.2 QUALITY CONTROL

A. The following publications form a part of this specification to the extent they are applicable:

1. Division 01 Section Quality Control.

2. ADC 1062 - Certification, Rating and Test Manual.

3. AMCA 500 - Test Method for Louvers, Dampers and Shutters.

4. ARI 650 - Air Outlets and Inlets.

5. ASHRAE 70 - Method of Testing for Rating the Air Flow Performance of Outlets and Inlets.

6. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

7. NFPA 90A - Installation of Air Conditioning and Ventilating Systems.

1.3 SUBMITTALS

A. Submittals for Review:

1. Submit under provisions of Division 01 Section Quality Control.

2. Product Data: Provide data for equipment required for this project. Review outlets and inlets as to size, finish, and type of mounting prior to submission. Submit room by room schedule of outlets and inlets showing type, size, location, application, and noise level.

3. Operation and Maintenance data.

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DIFFUSERS, REGISTERS, AND GRILLES

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1.4 QUALITY ASSURANCE

A. Test and rate air outlet and inlet performance in accordance with ADC Equipment Test Code 1062 and ASHRAE 70.

B. Test and rate louver performance in accordance with AMCA 500.

1.5 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing the Products specified in this Section with minimum three years experience.

PART 2 - PRODUCTS

2.1 LOUVERED FACE CEILING DIFFUSERS

A. Type: Lay in or flanged style with louvered face, fully adjustable pattern, and removable face.

B. Fabrication: Steel with baked enamel finish.

C. Accessories: Radial opposed blade damper and multi-louvered equalizing grid with damper adjustable from diffuser face.

2.2 CEILING SLOT DIFFUSERS

A. Type: Continuous width and number of slots as scheduled with adjustable vanes for left, right, or vertical discharge.

B. Fabrication: Aluminum extrusions with factory off-white enamel.

C. Frame: Margin as scheduled with countersunk screw, concealed mounting or support clips for suspension system mounting and gasket, mitered end border.

D. Plenum: Integral, galvanized steel, insulated.

2.3 CEILING EGGCRATE EXHAUST AND RETURN GRILLES

A. Type: 1/2”x1/2”x1” grid pattern

B. Frame: 1-1/4 inch margin concealed mounting.

C. Fabrication: Aluminum extrusion border and grid, with factory baked enamel finish. Color to be selected.

D. Damper: Integral, opposed blade type, face damper.

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DIFFUSERS, REGISTERS, AND GRILLES

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PART 3 - EXECUTION

3.1 INSTALLATION

A. Install in accordance with manufacturer's instructions.

B. Check location of outlets and inlets and make necessary adjustments in position to conform with architectural features, symmetry, and lighting arrangement.

C. Install diffusers to ductwork with air tight connection.

D. Provide balancing dampers on duct take-off to diffusers, and grilles and registers, despite whether dampers are specified as part of the diffuser, or grille and register assembly.

E. Paint ductwork visible behind air outlets and inlets matte black. Refer to Division 09 Section Painting and Coating.

END OF SECTION