233713_Diffusers Registers Grilles and Louvers.DOC

SECTION 233713 - DIFFUSERS, REGISTERS, AND GRILLES

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Grilles.

B. Related Sections:

1. Division 23 Section "Air Duct Accessories" for volume-control dampers not integral to diffusers, registers, and grilles.

1.3 SUBMITTALS

A. Product Data: For each type of product indicated, include the following:

1. Data Sheet: Indicate materials of construction, finish, and mounting details; and performance data including throw and drop, static-pressure drop, and noise ratings.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

1. Titus.

2. Anemostat Products; a Mestek company.

3. Carnes.

4. Hart & Cooley Inc.

5. Price Industries.

2.2 CEILING GRILLE (G-A)

A. Type: Steel construction, 3/16-inch diameter holes on ¼-inch staggered centers and no less than 51 percent free area. Flush face, butterfly damper with round neck. Finish to be White.

B. Frame: Lay-in, type as coordinated with the ceiling finish.

C. Design Basis: Titus PAR, max. NC of 25.

2.3 SOURCE QUALITY CONTROL

A. Verification of Performance: Rate grilles according to ASHRAE 70, "Method of Testing for Rating the Performance of Air Outlets and Inlets."

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas where diffusers, registers, and grilles are to be installed for compliance with requirements for installation tolerances and other conditions affecting performance of equipment.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Install grilles level and plumb.

B. Ceiling-Mounted Outlets and Inlets: Drawings indicate general arrangement of ducts, fittings, and accessories. Air outlet and inlet locations have been indicated to achieve design requirements for air volume, noise criteria, airflow pattern, throw, and pressure drop. Make final locations where indicated, as much as practical. For units installed in lay-in ceiling panels, locate units in the center of panel. Where architectural features or other items conflict with installation, notify Architect for a determination of final location.

C. Install grilles with airtight connections to ducts and to allow service and maintenance of dampers, air extractors, and fire dampers.

END OF SECTION

Upgrade The Annex Building HVAC

Diffusers, Registers, Grilles, & Louvers

BIIRU, Newark DE 233713 -