Ruskin										March 1999
3900 Dr. Greaves Road
Kansas City, Missouri  64030
	Phone		(816) 761-7476
	Fax		(816) 765-8955
	Web Site	www.Ruskin.com

Product Guide Specification

Specifier Notes:  This product guide specification is written according to the Construction Specifications Institute (CSI) Format, including MasterFormat (1995 Edition), SectionFormat, and PageFormat, contained in the CSI Manual of Practice.

The section must be carefully reviewed and edited by the Engineer to meet the requirements of the project and local building code.  Coordinate this section with other specification sections and the drawings.

Delete all "Specifier Notes" when editing this section.	

SECTION 15820

HIGH TEMPERATURE LOW LEAK ROUND CONTROL DAMPERS

Specifier Notes:  This section covers Ruskin high temperature, low leak, round control dampers with circular blade, Model CDRI95.  Consult Ruskin for assistance in editing this section for specific applications.	

PART 1	GENERAL

1.1	SECTION INCLUDES

A.	High temperature, low leak, round control dampers with circular blade.

1.2	RELATED SECTIONS

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

A.	Section 15810 - Ducts.

B.	Section 15900 - Damper Controllers.

1.3	REFERENCES
A.	AMCA 500 - Test Methods for Louvers, Dampers and Shutters.

1.4	SUBMITTALS

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

B.	Product Data:  Submit manufacturer's product data, including leakage, pressure drop, and maximum pressure data in accordance with AMCA 500 testing.  Submit data for full range of damper sizes.

C.	Shop Drawings:  Submit shop drawings indicating materials, construction, dimensions, and installation details.

1.5	DELIVERY, STORAGE, AND HANDLING

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

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

C.	Handling:  Protect materials and finishes during handling and installation to prevent damage.

PART 2	PRODUCTS

2.1	MANUFACTURER

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

2.2	HIGH TEMPERATURE LOW LEAK ROUND CONTROL DAMPERS

Specifier Notes:  Consult Ruskin for assistance in selecting from options for specific applications.	

A.	Fabrication:
1.	Model:  CDRI95.
2.	Type:  Butterfly.
3.	Frame:  One-piece carbon steel channel.
a.	Flange:  [1-1/2 inches x minimum 3/16 inch (38 x minimum 5 mm)] [2 inches x minimum 1/4 inch (51 x minimum 6 mm)] [2-1/2 inches x minimum 1/4 inch (64 x minimum 6 mm)].
b.	Web:  [9 inches x minimum 3/16 inch (229 x minimum 5 mm)] [12 inches x minimum 1/4 inch (305 x minimum 6 mm)] [12 inches x minimum 5/16 inch (305 x minimum 8 mm)].
c.	Bolt Holes:  [One flange] [Both flanges].
4.	Blade:  Circular, one-piece carbon steel, [minimum 3/8 inch (10 mm)] [minimum 1/2 inch (13 mm)] [minimum 5/8 inch (16 mm)] [minimum 3/4 inch (19 mm)] thick.  Pivot on stainless steel stub axles welded permanently on blade center.
5.	Blade Stop:  Full circumference, located in air stream, [minimum 1/2 inch x 1/4 inch (13 x 6 mm) steel bar on dampers under 17 inches (432 mm) diameter] [minimum 1/2 inch x 1/2 inch (13 x 13 mm) steel bar on dampers 17 inches (432 mm) diameter and larger].
6.	Axle:  [Minimum 1 inch (25 mm)] [Minimum 1-1/2 inches (38 mm)] [Minimum 2 inches (51 mm)] [Minimum 2-1/2 inches (64 mm)] diameter, continuous, steel rod.
7.	Control Shaft:  Extended axle 6 inches (152 mm).
8.	Bearings:  Grease lubricated ball bearings with high temperature grease, adjustable shaft packing mounted outboard of frame, maximum 500 degrees F (260 degrees C).

Specifier Notes:  Actuator selection, mounting on damper, and pretest cycling will be performed by Ruskin.  Consult Ruskin for additional testing and mounting configurations of Ruskin supplied actuators.	

9.	Actuator:  [Manual, hand quadrant] [Manual, __________ ] [Electric, 120 V, 60 Hz, two-position, spring-return] [Electric, __________ ] [Pneumatic, 20 to 30 psi (138 to 207 kPa) supply air pressure, two-position, spring-return] [Pneumatic, __________ ].
10.	Blade Seals:
a.	Adjustable blade seal design with ceramic fibrous material sewn and encased in a woven high temperature sleeve, maximum 1,200 degrees F (649 degrees C).
b.	Serviceable and removable without damper replacement or damper removal from the system.

Specifier Notes:  Standard finish is high temperature aluminum paint.  Consult Ruskin for assistance in specifying special materials and finishes for specific applications.	

11.	Finish:  High temperature aluminum paint.
12.	Maximum Operating Temperature:  [Excursions to 1,200 degrees F (649 degrees C) with normal operating temperature of 500 degrees F (260 degrees C)] [ __________ ].
13.	Assembly:  Factory assemble damper components.

Specifier Notes:  Dampers may tolerate higher pressures and velocities than those specified.  Consult Ruskin when a damper is to be applied in conditions exceeding recommended maximums.	

B.	Performance Data for Damper Inside Diameter of 44 inches (1,118 mm):
1.	Maximum System Pressure:  20 inches w.g. (5.0 kPa).
2.	Maximum System Velocity:  4,000 feet per minute (1,219 m/min).
3.	Leakage with Seals:  Based on pressure differential of 20 inches w.g. (5.0 kPa).
a.	Total Leakage:  7 cubic feet per minute (0.2 m3/min).

2.3	SOURCE QUALITY CONTROL

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

PART 3	EXECUTION

3.1	EXAMINATION
Examine 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 instructions.

Specifier Notes:  Consult Ruskin for dampers with axle orientation other than horizontal.	

B.	Install dampers round and free from distortion with axle running horizontally.

END OF SECTION