PRODUCT SPECIFICATION GUIDE
MODEL:MANUAL BALANCING DAMPERS
DIVISION 23–HEATING, VENTILATION, AND AIR CONDITIONING (HVAC)(PREVIOUSLY DIVISION 15)
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Specifier Notes: This product guide specification is written according to the Construction Specifications Institute (CSI) Format.
The section must be carefully reviewed and edited by the Engineer to meet the requirements of the project and local building code. Coordinate with other specification sections and the drawings.
Delete all "Specifier Notes" when editing this section.
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SECTION 233313 (Previously 15820)
MANUAL BALANCING DAMPERS
PART 1 - GENERAL
1.1SECTION INCLUDES
A.Manual balancing dampers suitable for application in HVAC systems with velocities to 1,500 feet per minute (7.7m/s).
1.2SUMMARY
B.Section 233100– HVAC Ducts and Casings (Previously 15810).
C.Section 230913.13– Actuators and Operators (Previously 15900).
1.3SUBMITTALS
D.Comply with requirements of Section 013300 - Submittal Procedures.
E.Product Data: Submit manufacturer's product data.
1.Include maximum pressure and velocity data.
2.Indicate materials, construction, dimensions, and installation details.
1.4QUALITY ASSURANCE
F.Dampersshall be warranted against manufacturing defects for a period of 5 years.
1.5DELIVERY, STORAGE, AND HANDLING
G.Delivery: Deliver materials to site in manufacturer's original, unopened containers and packaging, with labels clearly indicating manufacturer, material, and location of installation.
H.Storage: Store materials in a dry area indoor and protected from damage and in accordance with manufacturer’s instructions.
I.Handling: Handle and lift dampers by frame only. Do not lift damper by blades or control shaft. Protect materials and finishes during handling and installation to prevent damage.
PART 2 - PRODUCTS
2.1MANUFACTURER
A.Pottorff, 5101 Blue Mound Road, Fort Worth, TX 76106. Phone (817) 509-2300
2.2MANUAL BALANCING DAMPERS
B.Model: CD-10 – Manual Balancing Damper.
C.Ratings:
1.Temperature Ratings: -25°F to 180°F (-32°C to 83°C)
2.Maximum Velocity: 1500 fpm (7.7m/s)
3.Differential Pressure Ratings: 1 in.wg (0.25 kPa)
D.Construction:
1.Frame: 2” x 22 gauge (51 mm x 0.85 mm)galvanized steel.
2.Blades: 22gauge (0.85 mm) galvanized steel - single square/rectangular center-V.
3.Axles: Minimum 3/8” (10 mm) square plated steel.
4.Control Shaft: 3/8” x 3” (10 mm x 76 mm) square drive with manual locking quadrant.
5.Bearings: Synthetic.
6.Finish: Mill Galvanized
7.Mounting:
Vertical
Horizontal
*****************************************************************************************************************Specifier Notes: Hand quadrant is factory furnished with damper.
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8.Actuator: Hand quadrant for 3/8” (10 mm) square extended shaft.
2.3ACCESSORIES
A.Hand Quadrant standoff bracket – for external insulated ductwork.
*****************************************************************************************************************Specifier Notes: Select one of the following.
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1.Depth:
1” (25 mm)
1½” (38)
2” (51 mm)
2.4SOURCE QUALITY CONTROL
B.Factory Tests: Factory cycle damper to assure proper operation.
PART 3 - EXECUTION
3.1EXAMINATION
A.Examine areas to receive dampers. Notify the Engineer of conditions that would adversely affect installation or subsequent utilization of dampers. Do not proceed with installation until unsatisfactory conditions are corrected.
3.2INSTALLATION
B.Install dampersat locations as indicated on the drawings and in accordance with manufacturer’s instructions.
C.DO NOT compress or stretch damper sleeve or frame into the duct or opening.
D.Handle dampers using the frame. Do not lift or move damper using blades or control shaft.
END OF SECTION
Specification Guide for Control DampersNovember 2008
PottorffPage 1