Ruskin Manufacturing							January 1997
3900 Dr. Greaves Road
Kansas City, Missouri  64030
Phone		(816) 761-7476
Fax		(816) 765-8955

Product Guide Specification

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Specifier Notes:  This product guide specification is written according to the Construction Specifications Institute (CSI) MasterFormat, Three-Part SectionFormat, and PageFormat, contained in the CSI Manual of Practice.  Five-digit section numbers are from MasterFormat, 1995 edition.

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 15820

FIRE DAMPERS

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Specifier Notes:  This section covers Ruskin Manufacturing true round dynamic fire dampers, suitable for application in HVAC systems with velocities to 4,000 feet per minute (1,219 m/min), Model FDR25.  Consult Ruskin for assistance in editing this section for specific applications.
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PART 1	GENERAL

1.1	SECTION INCLUDES

A.	True round dynamic fire dampers, suitable for application in HVAC systems with velocities to 4,000 feet per minute (1,219 m/min).

1.2	RELATED SECTIONS

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Specifier Notes:  Edit the following list as required for the project.  List other sections with work directly related to the dampers.
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A.	Section 15810 - Ducts.

1.3	REFERENCES

A.	CSFM - California State Fire Marshall Listing for Fire Damper and Smoke Damper.

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

C.	UL 555 - Standard for Safety; Fire Dampers.

1.4	SUBMITTALS

A.	Comply with requirements of Section 01330 - Submittal Procedures.

B.	Product Data:  Submit manufacturer's product data.
1.	Include maximum pressure data.
2.	Indicate materials, construction, dimensions, and installation details.
3.	Verify conformance to NFPA 90A, UL 555, CSFM, and applicable building code.

1.5 	QUALITY ASSURANCE

A.	Manufacturer:  Test and qualify with UL a complete range of damper sizes covering dampers specified.  Testing 1 size only is not acceptable.

B.	Damper Capacity:  Demonstrate damper capacity to close under HVAC system operating conditions in accordance with UL 555.
1.	Maximum Pressure:  4 inches w.g. (1 kPa).
2.	Maximum Air Velocity:  4,000 feet per minute (1,219 m/min).

1.6	DELIVERY, STORAGE, AND HANDLING

A.	Delivery:  Deliver materials to site in manufacturer's original, unopened containers and packaging, with labels clearly indicating manufacturer and material.

B.	Storage:  Store materials in a dry area indoors, protected from damage and in accordance with manufacturer's instructions.

C.	Handling:  Handle and lift dampers in accordance with manufacturer's instructions.  Protect materials and finishes during handling and installation to prevent damage.

PART 2	PRODUCTS

2.1	MANUFACTURER

A.	Ruskin Manufacturing, 3900 Dr. Greaves Road, Kansas City, Missouri 64030.  Phone (816) 761-7476.  Fax (816) 765-8955.

2.2	FIRE DAMPERS

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Specifier Notes:  Consult Ruskin for assistance in selecting from options for specific applications.  
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A.	Fabrication:
1.	Model:  FDR25.
2.	Fire Rating:  UL 555 classified and labeled as a 1-1/2 hour fire damper.

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Specifier Notes:  Dual directional airflow is necessary for simple installation.
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3.	Air Flow Rating:  UL approved for dual directional air flow.

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Specifier Notes:  The frame and sleeve are one-piece.  The frame/sleeve is true round with roll formed beads and a groove for strength and easy installation.  The one-piece frame/sleeve reduces cost and installation time. ********************************************************************************************************************

Frame/Sleeve:  [14 inches (356 mm)] [17 inches (432 mm)] [20 inches (508 mm)] x minimum 20 gage (1.0 mm) galvanized steel with roll formed beads and a groove for added strength.
5.	Blade:
a.	Style:  Single piece, spring closure upon fusible link release.
b.	Material:  Minimum 14 gage (2.0 mm) galvanized steel with angle stiffeners for added strength.
6.	Bearings:  Self-lubricating stainless steel sleeve, turning in hole in frame.
7.	Axle:  Minimum 1/2 inch (13 mm) diameter plated steel, mechanically attached to blade.

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Specifier Notes:  Damper comes complete with damper and retaining plates for installation in rectangular openings through metal stud or masonry walls or floors.  Cinch plates hold damper securely in position, and are secured to wall or floor.  Cinch plates reduce cost and installation time.
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8.	Cinch Plates:
a.	One-piece, minimum 20 gage (1.0 mm) galvanized steel.
Adjustable bolt-type.
Factory matched and shipped with individual damper.
9.	Mounting:  [Vertical] [Horizontal].

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Specifier Notes:  Specify standard fusible link or optional ETL temperature release device.  Specify release temperature for fusible link.
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10.	Temperature Release Device:
a.	Fusible link, [165 degrees F (74 degrees C)] [212 degrees F (100 degrees C)] [285 degrees F (141 degrees C)].
b.	ETL, 24 VAC/VDC, 165 degrees F (74 degrees C).

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Specifier Notes:  Standard finish is mill galvanized.  Consult Ruskin for assistance in specifying special finishes for specific applications.
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11.	Finish:  Mill galvanized.
12.	Assembly:  Factory assemble damper and accessories and furnish as a single unit conforming to UL 555.

B.	Performance Data:
1.	Temperature Qualified:  Damper qualified in accordance with UL 555 as a 1-1/2 hour fire damper.
2.	Capacity:  Demonstrate capacity of damper to close in HVAC system operating conditions.
a.	Maximum Pressure:  4 inches w.g. (1 kPa).
b.	Maximum Air Velocity:  4,000 feet per minute (1,219 m/min).

2.3	ACCESSORIES

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Specifier Notes:  Consult Ruskin for assistance in specifying accessories for specific applications.
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A.	SP 100 Switch Package:  Two position indicator switches linked to damper to remotely indicate damper blade position.

2.4 	SOURCE QUALITY CONTROL

A.	Factory Tests:  Factory cycle damper to assure proper operation.

PART 3	EXECUTION

3.1	EXAMINATION

A.	Inspect areas to receive dampers.  Notify the Engineer of conditions that would adversely affect the installation or subsequent utilization of the dampers.  Do not proceed with installation until unsatisfactory conditions are corrected.

3.2	INSTALLATION

A.	Install dampers at locations indicated on the drawings and in accordance with manufacturer's UL approved installation instructions.

B.	Install dampers round and free from racking.

C.	Do not compress or stretch damper sleeve into duct or opening.

D.	Handle damper using sleeve or frame.  Do not lift damper using blade or jackshaft.

END OF SECTION