PRODUCT SPECIFICATION GUIDE

MODEL: BACKDRAFT 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.

This section covers Pottorff’s , light duty, motorized backdraft damper with velocities to 1250fpm. Consult Pottorff for assistance in editing this section for specific applications.

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SECTION 233313 (Previously 15820)

ACTUATOR OPERATED BACKDRAFT DAMPERS

PART 1 - GENERAL

1.1SECTION INCLUDES

  1. Extruded aluminum actuator operated backdraft dampers suitable for application in HVAC systems with velocities to 1,250 feet per minute (6.4 m/s).

1.2RELATED SECTIONS

  1. Section 233100 – HVAC Duct and Casing (Previously 15810)
  2. Section 230913.13 – Actuators and Operators (Previously 15900)

1.3REFERENCES

  1. AMCA 500-D – Laboratory Methods of Testing Dampers for Rating.

1.4SUBMITTALS

  1. Comply with requirements of Section 013300 - Submittal Procedures.
  2. Product Data: Submit manufacturer's product data.
  3. Include leakage, pressure drop, and maximum back pressure data.
  4. Indicate materials, construction, dimensions, and installation details.
  5. Verify damper pressure drop ratings based on tests and procedures performed in accordance with AMCA 500-D.

1.5QUALITY ASSURANCE

  1. Dampers shall be warranted against manufacturing defects for a period of 5 years.
  2. Pressure Drop Ratings: Damper pressure drop ratings based on tests and procedures performed in accordance with AMCA 500-D.

1.6DELIVERY, STORAGE, AND HANDLING

  1. Delivery: Deliver materials to site in manufacturer's original, unopened containers and packaging, with labels clearly indicating manufacturer, material, and location of installation.
  2. Storage: Store materials in a dry area indoor and protected from damage and in accordance with manufacturer’s instructions.
  3. Handling: Handle and lift dampers by sleeve or frame only. Do not lift damper by blades or actuator. Protect materials and finishes during handling and installation to prevent damage.

PART 2 - PRODUCTS

2.1MANUFACTURER

  1. Pottorff, 5101 Blue Mound Road, Fort Worth, TX 76106. Phone (817) 509-2300

2.2BACKDRAFT DAMPERS

  1. Model: BD-58
  2. Ratings:
  3. Temperature Ratings: -25°F to 150°F (-32°C to 66°C).
  4. Maximum Velocity: 1,250 fpm (6.4 m/s).
  5. Differential Pressure Ratings: 3.5 in. wg (0.9 kPa).
  6. Construction:
  7. Frame: 2” x ½” x 0.06” (51 x 13 x 1.5) 6063-T5 extruded aluminum channel. [Type 304 stainless steel] with optional [front flange] and [rear-flange].
  8. Blades:

a.Style: Single-piece, off-center pivot.

b.Action: Motorized backdraft.

c.Orientation: Vertical mounted, horizontal flow or horizontal mounted, vertical up flow.

d.Material: 24 ga. (0.51) 6063-T5 formed aluminum [Type 304 stainless steel]

e.Width: Maximum 6 3/8 inches (162).

  1. Axles: Corrosion-resistant, synthetic, formed as single-piece.
  2. Bearings: Corrosion-resistant, synthetic, formed as single-piece with axle.
  3. Seals: Neoprene.
  4. Linkage: On-Blade.
  5. Finish: [Mill aluminum][stainless steel].
  6. Mounting:

Vertical

Horizontal

2.3ACCESSORIES

  1. Transitions (sleeve required) [Flanged][Round][Oval]
  2. Factory Installed Sleeve:
  3. Gauge:

20 (1.0)

16 (1.5)

  1. Length:

10” (254)

12” (305)

24” (610)

Other______

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Specifier Notes: Specify an electric or pneumatic actuator, fail position, and mounting. Consult Pottorff for assistance in specifying accessories for specific applications.

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  1. Actuator:
  2. Electric: [120 V, 60 Hz, two-position] [230 V, 60 Hz, two-position].
  3. Fail Position: [Open] [Closed].
  4. Mounting: Internal

2.4SOURCE QUALITY

  1. Factory Tests: Factory cycle damper [and actuator] assembly to assure proper operation.

PART 3 - EXECUTION

3.1EXAMINATION

  1. Examine area 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

  1. Install dampers at locations as indicated on the drawings and in accordance with manufacturer’s instructions.
  2. Do not compress or stretch damper sleeve or frame into the duct or opening.
  3. Handle dampers using the frame or sleeve. Do not lift or move damper using blades or actuator.
  4. Install dampers square and free from racking with blades running horizontally.
  5. Install factory supplied mullion for multiple section assemblies to support assembly weight and to hold against system pressure. Install bracing as needed.
  6. Install connections to electric actuators as specified in section 15900.

END OF SECTION

Specification Guide for DampersJanuary 2009

PottorffPage 1