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

DUCT ACCESS DOORS

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Specifier Notes:  This section covers Ruskin Manufacturing galvanized steel, high pressure duct access doors designed to provide access to high pressure ducts and to protect against collapsing of ductwork due to accidental closure of dampers during system operation, Model ADHP-3.  Consult Ruskin for assistance in editing this section for specific applications.
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PART 1	GENERAL

1.1	SECTION INCLUDES

A.	Galvanized steel, high pressure duct access doors designed to provide access to high pressure ducts and to protect against collapsing of ductwork due to accidental closure of dampers during system operation.

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 duct access doors.
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A.	Section 15810 - Ducts.

1.3	SUBMITTALS

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

B.	Product Data:  Submit manufacturer's product data.
1.	Include performance and maximum pressure data.
2.	Indicate materials, construction, dimensions, and installation details.

1.4 	QUALITY ASSURANCE

A.	Capacity:  Demonstrate capacity of high pressure duct access doors to operate according to HVAC system operating conditions.
1.	System Pressure:  Maximum 12 inches w.g. (3.0 kPa).
2.	Airflow:  Maximum air volume of 80,000 cubic feet per minute (2,265.6 m3/min).

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 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 doors 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	DUCT ACCESS DOORS

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Specifier Notes:  High pressure duct access doors serve 2 purposes, vacuum relief and duct access.  Specify door for positive pressure systems only.  Consult Ruskin for assistance in selecting from options for specific applications.  
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A.	Fabrication:
1.	Model:  ADHP-3.
2.	Frame:  Minimum 16 gage (1.6 mm) die-formed galvanized steel Z-channel, reinforced at corners, spring bracket.
3.	Doors:
a.	Style:  Removable, single skin with negator springs mechanically attached to opposite ends. 
b.	Action:  Spring relief and reset.

c.	Material:  Minimum 16 gage (1.6 mm) formed galvanized steel.

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Specifier Notes:  Duct access doors are available in 5 sizes.  Specify door size according to access or performance requirements.
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d.	Size:  [6 x 8 inches (152 x 203 mm)] [8 x 8 inches (203 x 203 mm)] [10 x 10 inches (254 x 254 mm)] [12 x 12 inches (305 x 305 mm)] [18 x 18 inches (457 x 457 mm)].
4.	Latches:  Spring type for negative pressure relief.
5.	Seals:  Polyurethane foam gasket between door and frame.
6.	Mounting:  [Vertical] [Horizontal].

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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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7.	Finish:  [Mill galvanized] [Stainless steel].		

B.	Performance Data:
1.	Capacity:  Demonstrate capacity of high pressure duct access doors to operate according to HVAC system operating conditions.
a.	System Pressure:  Maximum 12 inches w.g. (3.0 kPa).
b.	Airflow:  Maximum air volume of 80,000 cubic feet per minute (2,265.6 m3/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.	Insulation.

B.	Window:  Round, transparent plexiglass panel.

C.	Safety chain.

D.	Round duct transition connection.

PART 3	EXECUTION

3.1	EXAMINATION

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

3.2	INSTALLATION

A.	Install duct access doors at locations indicated on the drawings and in accordance with manufacturer's installation instructions.

B.	Install duct access doors square and free from racking.

C.	Do not compress or stretch door frame into duct or opening.

D.	Handle duct access doors using frame.	

END OF SECTION