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UNIVERSITY OF NORTH FLORIDA Arena HVAC Replacement Division Section Title Pages DIVISION 23 - HEATING VENTILATING AND AIR CONDITIONING 230010 BASIC MECHANICAL REQUIREMENTS 25 230513 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 3 230519 METERS AND GAGES FOR HVAC PIPING 5 230523 GENERAL-DUTY VALVES FOR HVAC PIPING 8 230593 TESTING, ADJUSTING, AND BALANCING FOR HVAC 21 230713 DUCT INSULATION 18 230719 HVAC PIPING INSULATION 19 230900 INSTRUMENTATION AND CONTROL FOR HVAC 18 233600 AIR TERMINAL UNITS 5 237313 MODULAR INDOOR CENTRAL-STATION AIR-HANDLING UNITS 11 END OF TABLE OF CONTENTS

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UNIVERSITY OF NORTH FLORIDA

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Division Section Title Pages

DIVISION 23 - HEATING VENTILATING AND AIR CONDITIONING

230010 BASIC MECHANICAL REQUIREMENTS 25

230513 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 3

230519 METERS AND GAGES FOR HVAC PIPING 5

230523 GENERAL-DUTY VALVES FOR HVAC PIPING 8

230593 TESTING, ADJUSTING, AND BALANCING FOR HVAC 21

230713 DUCT INSULATION 18

230719 HVAC PIPING INSULATION 19

230900 INSTRUMENTATION AND CONTROL FOR HVAC 18

233600 AIR TERMINAL UNITS 5

237313 MODULAR INDOOR CENTRAL-STATION AIR-HANDLING UNITS 11

END OF TABLE OF CONTENTS

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SECTION 23 00 10

BASIC MECHANICAL REQUIREMENTS

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. Basic Requirements: Requirements of the Contract Forms, Conditions of the Contract, Specifications, Drawings, and Addenda and Contract Modifications (the Contract Documents), apply to the requirements of each Section of Division 23.

B. Conflicts: Nothing contained in this Section shall be construed to conflict in any way with other provisions or requirements of the Contract documents. The intent is that this Section will take precedence. Where differences arise, the Architect shall decide which directions or instructions take precedence.

1.02 SUMMARY

A. General: Unless an item is specifically mentioned as being provided by others, the requirements of Division 23 Contract Documents shall be completed. The systems, equipment, devices and accessories shall be installed, finished, tested and adjusted for continuous and proper operation. Any apparatus, material or device not shown on the Drawings but mentioned in these Specifications, or vice versa, or any incidental accessories necessary to make the project complete and operational in all respects, shall be furnished, delivered and installed without additional expense to the Owner. Include all materials, equipment, supervision, operation, methods and labor for the fabrication, installation, start-up and tests necessary for complete and properly functioning systems.

1.03 APPLICABLE STANDARDS

A. Code Compliance: As a minimum, unless otherwise indicated, comply with all rules, regulations, standards, codes, ordinances and laws of local, state and federal governments and the amendments and interpretation of such rules, regulations, standards, codes, ordinances and laws of local, state and federal governments by the authorities having lawful jurisdiction.

B. ADA: Comply with the requirements of the Americans with Disabilities Act (ADA).

C. Comply: With the National Fire Protection Association (NFPA) Standards and other Codes and Standards as adopted by the Local Authority having Jurisdiction.

D. Comply: With the National Fire Protection Association (NFPA) Standards and other Codes and Standards indicated.

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E. Florida Building Code 2014: Conform in strict compliance to the Florida Building Code (FBC) and the amendments which are enforced by the local authority having jurisdiction.1. Florida Building Code – Mechanical2. Florida Building Code – Plumbing3. Florida Building Code – Fuel Gas4. Florida Building Code – Energy Conservation

F. Florida Administrative Code

G. NATIONAL FIRE PROTECTION (NFPA) Standards:1. NFPA-1, Uniform Fire Code™, 2006 Revision2. NFPA-10, Standard for Portable Fire Extinguishers, 2002 Revision3. NFPA-11A, Standard for Medium and High Expansion Foam Systems,

1999 Revision4. NFPA-13, Standard for the Installation of Sprinkler Systems, 2002

Revision5. NFPA-14, Standard for the Installation of Standpipe and Hose Systems,

2003 Revision6. NFPA-15, Standard for Water Spray Fixed Systems for Fire Protection,

2001 Revision7. NFPA-16, Standard for the Installation of Foam Water Sprinkler and

Foam Water Spray Systems, 2003 Revision8. NFPA-17, Standard for Dry-Chemical Extinguishing Systems, 2002

Revision9. NFPA-20, Standard for the Installation of Stationary Pumps for Fire

Protection, 2003 Revision10. NFPA-24, Standards for the Installation of Private Fire Service Mains

and Their Appurtenances, 2002 Revision11. NFPA-30, Flammable and Combustible Liquids Code, 2003 Revision12. NFPA-31, Standard for the Installation of Oil Burning Equipment, 2001

Revision13. NFPA-45, Standard on Fire Protection for Laboratories Using

Chemicals, 2004 Revision14. NFPA-50, Standard for Bulk Oxygen Systems at Consumer Sites, 2001

Revision15. NFPA-51, Standard for the Design and Installation of Oxygen-Fuel Gas

Systems for Welding, Cutting and Allied Process, 2002 Revision16. NFPA-54, National Fuel Gas Code, 2006 Revision17. NFPA-58, Standard for Storage and Handling of Liquified Petroleum

Gases, 2004 Revision18. NFPA-70, National Electrical Code, 2005 Revision19. NFPA-72, National Fire Alarm Code, 2002 Revision20. NFPA-75, Standard for the Protection of Information Technology

Equipment, 2003 Revision21. NFPA-82, Standard on Incinerators, Waste and Linen Handling Systems

and Equipment, 2004 Revision22. NFPA-88A, Standard for Parking Structures, 2002 Revision23. NFPA-90A, Standard for the Installation of Air Conditioning and

Ventilation Systems, 2002 Revision

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24. NFPA-90B, Standard for the Installation of Warm Air Heating and Air Conditioning Systems, 2006 Revision

25. NFPA-91, Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists and Noncombustible Particulate Solids, 2004 Revision

26. NFPA-92A, Recommended Practice for Smoke-Control Systems, 2006 Edition

27. NFPA-92B, Guide for Smoke Management Systems in Malls, Atria, and Large Areas, 2005 Edition

28. NFPA-96, Standard for Ventilation Control and Fire Prevention of Commercial Cooking Operations, 2004 Revision {Subdivision 7-2.2 of NFPA 96 applies prospectively only. Existing installations are permitted to remain in place subject to the approval of the authority having jurisdiction.}

29. NFPA-99, Standard for Health Care Facilities, 2005 Revision30. NFPA-101A, Guide to Alternative Approaches to Life Safety, 2004

Revision31. NFPA-101B, Standard on Means of Egress for Buildings and Structures,

2002 Revision32. NFPA-211, Standard for Chimneys, Fireplaces, Vents and Solid Fuel

Burning Appliances, 2003 Revision33. NFPA-214, Water Cooling Towers, 2005 Revision34. NFPA-418, Standard for Rooftop Heliport Construction and Protection,

2001 Revision35. NFPA-704, Standard System for the Identification of the Fire Hazards of

Materials for Emergency Response, 2001 Revision36. NFPA-780, Installation of Lightning Protection Systems, 2004 Revision37. NFPA-1962, Standard for Inspection, Care and Use of Fire Hose

including Couplings and Nozzles; and the Service Testing of Fire Hose, 2003 Revision

38. NFPA-1963, Standard for Fire Hose Connections, 2003 Revision39. NFPA-2001, Standard on Clean Agent Fire Extinguishing Systems, 2004

Edition

H. Notification: Comply with all of the requirements of the Federal "Right-To-Know" Regulations and the Florida "Right-To-Know" Law and provide notification to all parties concerned as to the use of toxic substances.

I. Owner Design Guidelines: Comply with all the requirements of the latest Owner MEP Engineering Design Guidelines and the latest Owner Architectural Construction Standards.

1.04 DRAWINGS AND SPECIFICATIONS

A. Intent: The intent of the drawings and specifications is to establish minimum acceptable quality standards for materials, equipment and workmanship, and to provide operable mechanical systems complete in every respect.

B. Equipment Placement: The drawings are diagrammatic, intended to show general arrangement, capacity and location of various components, equipment and devices. Each location shall be determined by reference to

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the general building plans and by actual measurements in the building as built. Reasonable changes in locations ordered by the Architect prior to the performance of the affected Work shall be provided at no additional cost to the Owner.

C. Drawing Scale: Due to the small scale of the drawings, and to unforeseen job conditions, all required offsets, transitions and fittings may not be shown but shall be provided at no additional cost.

D. Conflict: In the event of a conflict, the Architect will render an interpretation in accordance with the General Conditions.

1.05 DEFINITIONS

A. Provide/Install: The word "provide" shall mean furnish, install, connect, test, complete, and leave ready for operation. The word "install" where used in conjunction with equipment furnished by the Owner or under another contract shall mean mount, connect, complete, and leave ready for operation.

B. Concealed: The surface of insulated or non-insulated piping, ductwork or equipment is concealed from view when standing inside a finished room, such as inside a chase or above a ceiling.

C. Exposed: The surface of insulated or non-insulated piping, ductwork or equipment is seen from inside a finished room, such as inside an equipment or air handling unit room.

D. Protected: The surface of insulated or non-insulated piping, ductwork or equipment on the exterior of the building but protected from direct exposure to rain by an overhang, eave, in an unconditioned parking garage or building crawl space.

E. Unprotected: The surface of insulated or non-insulated piping, ductwork or equipment on the exterior of the building and exposed to rain.

F. Abbreviations: Abbreviations, where not defined in the Contract Documents, shall be interpreted to mean the normal construction industry terminology, as determined by the Architect. Plural words shall be interpreted as singular and singular words shall be interpreted as plural where applicable for context of the Contract Documents.

1.06 SHOP DRAWINGS

A. General: Refer to paragraph entitled "SUBMITTAL" in this section. Include the following data:

1. Shop Drawings:a. Submit shop drawings for the following:

(1) Each piping system(2) Ductwork systems

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(3) Coordination drawings

1.07 RECORD DRAWINGS

A. Production: Maintain one set of black or blue line on white project record "as-built" drawings at the site. At all times the set shall be accurate, clear, and complete, indicating the actual installation. Record drawings shall be updated weekly to record the present stage of progress. These drawings shall be available to the Architect at all times. Equipment schedules, control diagrams, sequences of operation shall also be updated.

B. Completion: Prior to substantial completion, transfer onto an unmarked second set of drawings all changes, marked in colored pencil, and submit them to the Architect. Upon completion of all punch lists, transfer all "As-Built" conditions to the AutoCAD drawing files, package three (3) print sets of full size drawings and two (2) CDs of the AutoCAD drawing files with associated reference files and submit them to the Architect for review and approval.

1.08 SUBMITTAL

A. General: The provisions of this section are supplemental to the requirements in Division 1, and only apply to the material and equipment covered in Division 23.

B. Time: Submit manufacturer's literature, performance data and installation instructions covered in each Section of Division 23 under an individual letter of transmittal within 30 days after Notice to Proceed unless otherwise indicated.

C. Submitter's Review: All items required for each section shall be reviewed before submittal. Submittal information for each item shall bear a review stamp of approval, indicating the name of the Contractor and Subcontractor (where applicable), the material suppliers, the initials of submitter and date checked. Responsibility for errors or omissions in submittals shall not be relieved by the Architect's review of submittals. Responsibility for submittals cannot be subrogated to material suppliers by Contractors or Subcontractors.

1. Review of the submittal data, whether indicated with "APPROVED" or with review comments, does not constitute authorization for or acceptance of a change in the contract price.

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D. Architect's Review: The submittal data shall be reviewed only for general conformance with the design concept of the project and for general compliance with the Contract Documents. Any action indicated is subject to the requirements of the Contract Documents. Reviews of submittal data review shall not include quantities; dimensions (which shall be confirmed and correlated at the job site); fabrication processes; techniques of construction; and co-ordination of the submittal data with all other trades. Copies of the submittal data will be returned marked "ACCEPTED AS SUBMITTED", "ACCEPTED AS NOTED", "REVISED AS NOTED AND RESUBMIT", "REJECTED, REVISED AS NOTED AND RESUBMIT”.

E. Submittal Items: Submittal items shall be inserted in a Technical Information Brochure. Mark the appropriate specification section or drawing reference number in the right hand corner of each item. All typewritten pages shall be on the product or equipment manufacturer's printed letterhead.

1. Manufacturer's Literature: Where indicated, include the manufacturer's printed literature. Literature shall be clearly marked to indicate the item intended for use.

2. Performance Data: Provide performance data, wiring and control diagrams and scale drawings which show that proposed equipment will fit into allotted space (indicate areas required for service access, connections, etc.), and other data required for the Architect to determine that the equipment complies with the Contract Documents. Where noted, performance data shall be certified by the manufacturer at the design rating points.

3. Installation Instructions: Where requested, each product submittal shall include the manufacturer's installation instructions. Generic installation instructions are not acceptable. Instructions shall be the same as those included with the product when it is shipped from the factory.

4. Written Operating Instructions: Instructions shall be the manufacturer's written operating instructions for the specified product. If the instructions cover more than one model or type of product they shall be clearly marked to identify the instructions that cover the product delivered to the project. Operating Instructions shall be submitted immediately after the product or equipment submittal has been returned from the Architect marked "APPROVED" or "APPROVED AS NOTED".

5. Maintenance Instructions: Information shall be the manufacturer's printed instructions and parts lists for the equipment furnished. If the instructions cover more than one model or type of equipment they shall be marked to identify the instructions for the furnished product. Submit maintenance instructions immediately after the product or equipment submittal has been returned from the Architect marked "APPROVED" or "APPROVED AS NOTED".

F. Substitutions:

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1. General: Refer to Division 1. Substitutions may be considered for any product or equipment of a manufacturer. See paragraph entitled "MANUFACTURER" in this Section. Any product or equipment may be submitted for review; however, only one substitution per item will be considered. If a substituted product or equipment item is rejected, provide the specified product or equipment.

a. Submittal shall include the name of the material or equipment to be substituted, equipment model numbers, drawings, catalog cuts, performance and test data and any other data or information necessary for the Architect to determine that the equipment meets the specification requirements. If the Architect accepts any proposed substitutions, such acceptance will be set forth in writing.

b. Substituted equipment with all accessories installed or optional equipment where permitted and found acceptable, must conform to space requirements. Substituted equipment that cannot meet space requirements, whether accepted or not, shall be replaced at no additional expense to the Owner. If the substituted item affects the work of other trades, the Request for Substitution form shall include a list of the necessary modifications.

2. Deviations: The Request for Substitution form shall include a complete list of deviations from the scheduled item stating both the features and functions of the scheduled item and the comparable features and functions of the proposed substitution.

a. Any deviation not indicated in writing will be assumed to be identical to the specified item even if it is shown otherwise on the submittal data.

b. If a deviation not listed is found anytime after review and acceptance by the Architect and that deviation, in the opinion of the Architect, renders the substituted item as unacceptable, the item shall be removed and replaced by the scheduled item at no additional cost to the Owner.

c. The Architect shall retain the right to specify modifications to the substituted item, correcting or adjusting for the deviation, if the Architect deems it to be in the best interest of the Owner.

3. Scheduled Item: A scheduled item is a product or item of equipment indicated in the Contract Documents by manufacturer's name and model number identifying a single item. The manufacturer's trade name for a group of products that does not signify a single item including type, style, quality, performance, and sound rating shall not be classified as a scheduled item. Where more than one manufacturer and product model number are indicated, each shall be considered as a scheduled item.

4. Form: When a product or item of equipment is proposed as a substitution a "REQUEST FOR SUBSTITUTION" form shall be

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completed and submitted with the required data. A copy of the form is included after the end of this section.

5. Rejection: Substituted products or equipment will be rejected if, in the opinion of the Architect, the submittal does not meet any one of the following conditions or requirements:

a. The submittal data is insufficient or not clearly identified. The Architect may or may not request additional information.

b. The product or equipment will not fit the space available and still provide the manufacturers published service area requirements.

c. The product or equipment submitted is not equivalent to or better than the specified item. Products or equipment of lesser quality may be considered provided an equitable financial rebate, satisfactory to the Architect, is to be returned to the Owner.

d. The product or equipment submitted has less capacity, efficiency and safety provisions than the specified item.

e. The product or equipment submitted does not have warranty, service and factory representation equivalent to that specified.

f. The Owner prefers not to accept the submitted product.

G. Technical Information Brochure:

1. Binder: Include binders with the first submittal for the Technical Information Brochure. Each binder shall be size 3 inch, hardcover, 3-ring type for 8-1/2" X 11" sheets. Provide correct designation on outside cover and on spine of each binder, i.e., MECHANICAL SUBMITTAL DATA, MECHANICAL OPERATION INSTRUCTION and MECHANICAL MAINTENANCE INSTRUCTIONS.

2. Number: Submit not less than five sets of binders for each of the three mechanical brochures indicated above. Each set shall consist of a minimum of two binders for submittal data and 1 binder each for operating instructions and for maintenance instructions. Additional binders shall be submitted at the request of the Architect. One set of binders shall be retained by the Architect. Three sets of binders shall be maintained for the Owner and the remaining set shall become the property of the Engineer.

3. Index: First sheet in each brochure shall be a photocopy of the "Division 23 Index" of the specifications. Second sheet shall list the firm name, address, phone number, superintendent's name for the contractor and all major subcontractors and suppliers associated with the project.

4. Dividers: Provide reinforced separation sheets tabbed with the appropriate specifications Section reference number for each Section in which submittal data or operation and maintenance instructions is required.

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5. Specifications: Insert a copy of the specifications for each Section and all addenda applicable to the Section between each of the Section dividers.

1.09 SHOP DRAWINGS FOR PIPING SYSTEMS

A. Requirements: Make Shop Drawings for piping systems at a minimum scale of 1/4 inch per foot in AutoCAD Version 2010 (or later) and print on reproducible transparencies to verify clearances and equipment locations. Show required maintenance and operational clearances. Identify Shop Drawings by project name and include names of Architect, Engineer, Contractors, Subcontractors and supplier, date in Shop Drawing title block. Number drawings sequentially and indicate:

1. Architectural and structural backgrounds with room names and numbers, etc., including but not limited to plans, sections, elevations, details, etc.

2. Fabrication and erection dimensions.3. Arrangements and sectional views.4. Necessary details, including complete information for making

connections to equipment.5. Descriptive names of equipment.6. Modifications and options to standard equipment required by Contract

Documents.

B. Stamp Area: Leave 4 inch by 2-1/2 inch blank area near title block for Architect's shop drawing stamp. The acceptance of a shop drawing by indicating "APPROVED" does not relieve the contractor from full compliance with the sizes and equipment connections shown on the contract documents unless the changes are specifically indicated on the shop drawing.

C. Reference Key: Indicate by cross-reference the Contract Drawings, notes, or Specification paragraph numbers where item(s) occur in the Contract Documents.

D. Additional Requirements: See specific Sections for additional requirements.

1.10 SHOP DRAWINGS FOR DUCT SYSTEMS

A. Requirements: Make Shop Drawings for duct systems at a minimum scale of 1/4 inch per foot in AutoCAD Version 2010 (or later) and print on reproducible transparencies to verify clearances and equipment locations. Show required maintenance and operational clearances. Identify Shop Drawings by project name and include names of Architect, Engineer, Contractors, Subcontractors and supplier, date in Shop Drawing title block. Number drawings sequentially and indicate:

1. Architectural and structural backgrounds with room names and numbers, etc., including but not limited to plans, sections, elevations, details, etc.

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2. Fabrication and erection dimensions.3. Arrangements and sectional views.4. Necessary details, including complete information for making

connections to air distribution devices and air handling equipment.5. Kinds of materials and finishes.6. Descriptive names of equipment.7. Modifications and options to standard equipment required.

B. Stamp Area: Leave 4 inch by 2-1/2 inch blank area near title block for Architect's shop drawing stamp. The acceptance of a shop drawing by indicating "APPROVED" does not relieve the contractor from full compliance with the sizes and connections shown on the contract documents unless the changes are specifically indicated on the shop drawing.

C. Reference Key: Indicate by cross-reference the Contract Drawings, notes, or Specification paragraph numbers where item(s) occur in the Contract Documents.

D. Ceiling Plans: Provide Shop Drawings, using sepias of architectural reflected ceiling plans, which indicate locations of exposed air distribution devices, sprinkler heads, lights and access panel.

E. Additional Requirements: See specific Sections for additional requirements.

1.11 COORDINATION DRAWINGS

A. General: Provide detailed (minimum 1/4 inch per foot) scaled coordination drawings showing locations and positions of all architectural, structural, (FF&E) equipment, electrical, plumbing, fire protection and mechanical elements for all installations. Provide overlay drawings, prior to beginning work, indicating work in and above ceilings and in mechanical and electrical rooms with horizontal and vertical dimensions, to avoid interference with structural framing, ceilings, partitions and other services. Accommodate phasing and temporary conditions indicated on the contract drawings as necessary to complete the work without disruption to the Owner's use of the existing occupied areas of the building(s).

B. Coordination of Space: Coordinate use of project space and sequence of installation of mechanical and electrical work which is indicated diagrammatically on drawings. Follow routings shown for pipes, ducts and conduits as closely as practicable, with due allowance for available physical space; make runs parallel with lines of building. Utilize space efficiently to maximize accessibility for other installations, for maintenance, and for repairs. In finished areas except as otherwise shown, conceal pipes, ducts, and wiring in construction. Coordinate locations of fixtures and outlets with finish elements. Contractor shall provide background drawings showing partitions, ceiling heights, and structural framing locations and elevations, and existing obstructions. Contractor shall resolve major interferences at initial coordination meeting prior to production of coordination drawings.

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C. Precedence of Services: In event of conflicts and interferences involving location and layout of work, use the following priority to resolve interferences:

1. Structure has highest priority.2. Walls systems.3. Ceiling grid/light fixtures.4. Gravity drainage lines.5. Large pipe mains.6. Ductwork/diffusers, registers and grilles.7. Sprinkler heads.8. Small piping and tubing/electrical conduit.9. Access panels.

D. Drawings shall be developed on AutoCAD Version 2010 (or later), and utilize AIA Standard layering conventions. At the completion of the project construction, the Contractor shall provide two (2) full-sized print sets and two (2) CDs of all drawing files with related reference files representing as-built installations for Architect review. Upon approval that the submitted information is complete, a similar submittal shall be provided to the Owner.

E. Stamp Area: Leave 4 inch by 2-1/2 inch blank area near title block for Architect's shop drawing stamp.

F. Reference Key: Indicate by cross-reference the Contract Drawings, notes, or Specification paragraph numbers where item(s) occur in the Contract Documents.

G. Additional Requirements: See specific Sections for additional requirements.

1.12 MANUFACTURER'S CHECKOUT

A. Start-up and Checkout: At completion of installation and prior to performance verification, a factory-trained representative of the manufacturer shall provide start-up and checkout service. After the performance verification the manufacturer's representative shall examine performance information and check the equipment in operation, and sign "Check-Out Memo" for the record. Submit a copy of Memo on each item of equipment where indicated in individual sections of these specifications for inclusion in each Technical Information Brochure. The "Check-Out Memo" shall be included with the performance verification data. Do not request "Instruction in Operation Conference" or request final inspection until Memos have been submitted and found acceptable.

1.13 INSTRUCTION TO OWNER

A. General: Instructions to the Owner shall be by competent representatives of the manufacturers involved, with time allowed for complete coverage of all operating procedures. Provide classroom instruction and field training in the design, operation and maintenance of the equipment and troubleshooting

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procedures. Explain the identification system, operational diagrams, emergency and alarm provisions, sequencing requirements, seasonal provisions, security, safety, efficiency and similar provisions of the systems. On the date of substantial completion, turn over the prime responsibility for operation of the mechanical equipment and systems to the Owner's operating personnel.

B. Training Period: Unless otherwise indicated training periods shall encompass the following number of hours of classroom and hands-on instructions with a maximum period of 4 hours per day for either. Mixing classroom instructions and hands on training in the same day is unacceptable.

1. Training periods:a. 4 hours Classroomb. 6 hours Classroomc. 8 hours Classroomd. 12 hours Classroome. 4 hours Hands-onf. 6 hours Hands-ong. 8 hours Hands-onh. 12 hours Hands-on

C. Scheduling: Submit any remaining required items for checking at least one week before final inspection of building. When submittal items are found acceptable, notify Owner, in writing, that an "Instruction in Operation Conference" may proceed. Conference will be scheduled by the Owner. After the conference, copies of a memo certifying that the "Instruction in Operation Conference" and "Completed Demonstration" have been made will by signed by Owner and the instructors, and one copy will be inserted in each Technical Information Brochure.

1.14 ALLOWANCES

A. General: Division 1.

1.15 ALTERNATES

A. Refer to Division 1.

1.16 STRUCTURAL CALCULATIONS FOR ROOF-MOUNTED EQUIPMENT

A. All roof-mounted devices, equipment and systems shall be constructed, designed and fastened to withstand wind loads of velocities up to 155 mph, as applicable to the wind zone of the project. Structural calculations for roof-mounted equipment shall be completed in accordance with Florida Building Code requirements and Florida Administrative Code Rule 9B-72 and submitted by a structural engineer registered in the State of Florida.

PART 2 - PRODUCTS

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2.01 MANUFACTURERS

A. Specified Products: Manufacturer’s names and product model numbers indicated on the drawings and in these specifications establish the type, style, quality, performance, and sound rating of the desired product. Listing of other manufacturers indicates that their equivalent products would be acceptable if they meet the specification requirements, the specific use and installation shown on the drawings, including space and clearance requirements, and the energy consumption and efficiency of the specified product. The listing of additional manufacturers in no way indicates that the manufacturer can provide an acceptable product.

B. Space Requirements: All manufactured products furnished on this project must have the required space and service areas indicated in the manufacturer's printed literature or shown on their shop drawing. When the manufacturer does not indicate the space required for servicing the equipment, the space shown on the drawings or as required by the Architect must be provided.

2.02 MATERIAL AND EQUIPMENT

A. General: Material and equipment used shall be produced by manufacturers regularly engaged in the production of similar items, and with a history of satisfactory use as judged by the Architect.

B. Specified Equipment: Equipment shall be the capacity and types indicated or shall be equivalent in the opinion of the Architect. Material and equipment furnished and installed shall be new, recently manufactured, of standard first grade quality and designed for the specific purpose. Equipment and material furnished shall be the manufacturer's standard item of production unless specified or required to be modified to suit job conditions. Sizes, material, finish, dimensions and the capacities for the specified application shall be published in catalogs for national distribution. Ratings and capacities shall be certified by a recognized rating bureau. Products shall be complete with accessories, trim, finish, safety guards and other devices and details needed for a complete installation and for the intended use and effect.

C. Compatibility: Material and equipment of one and the same kind, type or classification and used for identical or similar purposes shall be made by the same manufacturer. Where more than one choice is available, select the options which are compatible with other products already selected. Compatibility is a basic general requirement of product selection.

PART 3 - EXECUTION

3.01 WORKMANSHIP

A. General: The installation of materials and equipment shall be done in a neat, workmanlike and timely manner by an adequate number of craftsmen knowledgeable of the requirements of the Contract Documents. They shall

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be skilled in the methods and craftsmanship needed to produce a first-quality installation. Personnel who install materials and equipment shall be qualified by training and experience to perform their assigned tasks. All materials and equipment shall be installed per the manufacturer’s written requirements.

B. Acceptable Workmanship: Acceptable workmanship is characterized by first-quality appearance and function which conforms to applicable standards of building system construction and exhibits a degree of quality and proficiency which is judged by the Architect as equivalent or better than that ordinarily produced by qualified industry tradesmen.

C. Performance: Personnel shall not be used in the performance of the installation of material and equipment who, in the opinion of the Architect, are deemed to be careless or unqualified to perform the assigned tasks. Material and equipment installations not in compliance with the Contract Documents, or installed with substandard workmanship in the opinion of the Architect, shall be removed and reinstalled by qualified craftsmen at no change in the contract price.

3.02 AIR CONVEYANCE SYSTEM MECHANICAL CLEANING (NEW DUCT

INSTALLATION)

A. General: The following criteria shall be used for the installation of all new HVAC air conveyance systems (ACS).

B. Qualifications: The enhanced air conveyance system cleaning procedures shall be performed by the Contractor. Microbiological analysis shall be performed by a firm which is acceptable to the Architect and which can demonstrate their ability to conduct the required analysis and reporting according to the NADCA and National Institute for Occupational Safety and Health (NIOSH) Methods. Submit for review and acceptance by the Architect the proposed procedure methodologies to be utilized, a listing of the proposed equipment to be used, and the proposed chemical agents to be used. A mock-up cleaning station and procedural presentation of cleaning process shall be performed at least three months prior to any ductwork installation for review by the Architect

C. Cleaning Procedure: All ductwork transported to the project shall be protected from weather and debris. Each HVAC duct section shall, prior to installation, be cleaned and disinfected at an approved cleaning station established on-site. Exhaust ductwork shall only require surface preparation from Note 1 below. All air distribution devices (diffusers, grilles, registers) including backpans of supply devices in critical areas, as defined by AIA, shall be decontaminated pursuant to Note 3 below. Four stages of ACS cleaning shall occur:

1. Surface dirt shall be removed by mechanical means, HEPA filtered vacuum and washed down with disposable cleaning cloths and 1:200 solution of trisodium phosphate (TSP) detergent.

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2. Wipe down surface with TSP solution again, frequently disposing contaminated cloths.

3. Decontaminate duct section with a diluted solution (4-6 tablespoons per gallon or as directed by manufacturer for use) of chlorhexidine diacetate, similar to Aveco Company Nolvasan, for an appropriate contact period then wipe down and rinse with clean cloths per the application processes defined by manufacturer guidelines.

4. Cap ducts with a 6 mil. plastic fastened completely to duct openings.

D. Cleaning Station: Provide a conditioned, positively pressurized, ventilated temporary enclosure to perform duct cleaning procedures. Perform all work and use protective measures as prescribed by cleaning, decontaminating solution manufacturer guidelines.

E. Sterilization, Occupied Facility: After the ACS has been cleaned and installed, provide surface sampling shall be performed by firm to confirm absence of Aspergillis fumigatus. Upon installation of a zone, the entire ACS shall then be flooded with Bioclean, or another low-odor dual quaternary ammonium compound, EPA registered for use in HVAC systems, and acceptable to the Architect, to sterilize the ACS. The ACS shall be tested in compliance with NADCA Level III sampling protocol until all air samples indicate a colony forming unit (CFU) count of 1.0 CFU per cubic meter or less; re-clean, re-sterilize and retest until all samples achieve results at or below this threshold level.

F. Reporting: Provide a complete report detailing the above processes. The report shall contain, as a minimum, the procedure methodologies utilized; the listing of the equipment used; a description of the portions of the ACS which were treated; the chemical agents which were used; the test results from the analysis.

3.03 CLEANING AND PROTECTION

A. General: Refer to Division 1.

B. Emergency Contacts: Prior to the beginning of the project, provide the Owner with a list of names, emergency telephone and beeper numbers of individuals who can be contacted during working and non-working hours, including weekends, for assistance throughout the warranty period if leaks, equipment failure or other damages occur. Update the list throughout installation and warranty to provide continuous availability of responsible parties to the Owner. If the Owner cannot contact the responsible party during an emergency situation, the Owner may effect emergency repairs through other means and may backcharge for the costs of repair material and labor incurred.

C. Emergency Contacts: Along with the operating and maintenance manual submittal, provide the Owner with a list of the names and emergency telephone and beeper numbers of individuals who can be contacted during

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working and non-working hours, including weekends, for assistance throughout the warranty period should leaks, equipment failure or other damage occur. Update the list throughout warranty to provide continuous availability of responsible parties to the Owner. If the Owner cannot contact the responsible party during an emergency situation, the Owner may effect emergency repairs through other means and may backcharge for the costs of repair material and labor incurred.

D. Housekeeping: Keep interiors of duct and pipe systems clean and free from dirt, rubbish and foreign matter. Close open ends of piping and ductwork at all times throughout the installation. Install 30% efficient filter media over each return air grille and open return duct opening; change media regularly during construction when dirty to keep duct interiors clean. Prevent dust, debris and foreign material from entering the piping and ductwork.

E. Equipment Protection: Protect fan motors, switches, equipment, fixtures, and other items from dirt, rubbish and foreign matter. Do not operate air-handling equipment if the building is not clean or if dust can enter the coils or the fan housings.

F. Equipment Cleaning: Thoroughly clean equipment and entire piping systems internally upon completion of installation and immediately prior to final acceptance. Open dirt pockets and strainers, blow down each piping system and clean strainer screens of accumulated debris. Remove accumulated dirt, scale, oil and foreign substances. Thoroughly wipe clean internal surfaces of ductwork and air handling units prior to request for substantial completion. (See para. 3.2 above.)

G. Building Cleanup: Remove debris, rubbish, leftover materials, tools and equipment from work areas and site. Clean tunnels and closed off spaces of packing boxes, wood frame members and other waste materials used in the installation. Final acceptance shall not be approved until site is cleaned.

H. Fixture Cleanup: Remove temporary labels, stickers, etc., from fixtures and equipment. Do not remove permanent nameplates, equipment model numbers, ratings, etc.

I. Filter Replacement: Provide filters, with the same efficiency rating as required for the final installation, for the protection of the air moving equipment and ductwork continuously throughout the construction phase. Provide a new set of clean filters for the test and balance of the air side equipment.

J. Protection of Finished Installation: Where installation is required in areas previously finished by other trades, protect the area from marring, soiling or other damage.

K. Air Handling Unit Operation During Construction Phase: Do not operate air handling equipment during building construction phase unless filter fabric is fastened to all duct systems’ inlets and all specified and scheduled air filters

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are installed to minimize dirt entry into ductwork and air moving equipment. When running air handling units to dry out the building, control the building temperature to drop very slowly, and verify all HVAC insulation is completed and doors and windows are installed and closed, to prevent condensation of water from humid air on building interior surfaces, equipment, materials and ductwork.

3.04 CORRECTION OF WORK

A. General: At no additional cost to the Owner, rectify discrepancies between the actual installation and contract documents when in the opinion of the T&B Agency or the Architect the discrepancies will affect system balance and performance.

B. Drive Changes: Include the cost of all pulley, belt, and drive changes, as well as balancing dampers, valves and fittings, and access panels to achieve proper system balance recommended by the T&B Agency.

3.05 COORDINATION AND ASSISTANCE

A. General: Provide all labor, equipment, tools and material required to operate the equipment and systems necessary for the testing and balancing of the systems and for the adjustment, calibration or repair of all electric or pneumatic automated control devices and components. These services shall be available on each working day during the period of final testing and balancing.

B. Drawings and Specifications: Provide to the T&B Agency a complete set of project record drawings and specifications and an approved copy of all HVAC shop drawings and equipment submittals. The T&B Agency shall be informed of all changes made to the system during construction, including applicable change orders.

C. Coordination: Coordinate the work of all trades and equipment suppliers to complete the modifications recommended by the T&B Agency and accepted by the Architect. Cut or drill holes for the insertion of air measuring devices as directed for test purposes; repair to as-new condition, inserting plastic caps or covers to prevent air leakage. Repair or replace insulation and re-establish the integrity of the vapor retardant.

3.06 PREPARATIONS FOR PERFORMANCE VERIFICATION

A. Verification: Prior to commencement of the balancing by the T&B Agency, the Contractor shall verify in writing:

1. That air filters have been replaced and are in clean condition.2. That linkages between dampers and their actuators are secure, non-

overloading and non-binding.3. That ductwork specialties are in their normal operating positions.4. That fans are operating at the correct rotation and specified RPM.

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5. That ductwork has been pressure tested and accepted.6. That strainers have been removed, cleaned and replaced, and that

temporary construction strainers have been removed.7. That compression or expansion tanks have been inspected, are not air-

bound or water-logged and are pre-charged, and that the piping systems have been completely vented and filled with water.

8. That air vents at coils and high points of the piping systems have been inspected and installed and operating freely.

9. That automatic valves, hand valves, and balancing valves have been placed in a fixed open position for full flow through all devices.

10. That linkages between valves and their actuators are secure, non-overloading and non-binding.

11. That pressures for hydronic reducing valves have been set.12. That operating temperatures have been set for chillers, regulating valves, etc.13. That pumps are operating at the correct rotation and specified horsepower.14. That piping has been pressure tested and accepted and piping systems

have been cleaned, flushed, sterilized and refilled with chemicals and prescribed treated water and vented.

15. That pressures for steam reducing valves have been set.16. That operating temperatures have been set for boilers, regulating

valves, etc.17. That the operating safeties (thermal overloads, firestat/freezestats,

smoke detectors, relief valves, etc.), are installed and fully functional.18. That equipment has been lubricated and can be operated without

damage.19. That the systems are operational and complete.20. That no latent residual work remains to be completed.

3.07 ACCEPTANCE TESTING PROCEDURE

A. General: Each HVAC system shall be tested to confirm proper operation and function in accordance with the construction documents and control sequence of operations.

B. The enclosed checklists shall be completed for each system and signed off by the mechanical sub-contractor project representative, then verified and signed-off by the mechanical sub-contractor project supervisor and the construction manager systems engineer. All checklists shall be incorporated into the project's close-out manuals submitted for Owner record.

C. On-site testing by the Architect and Engineer shall be performed at the discretion of the Architect/Engineer for any or all systems to confirm test results and system function.

D. The Contractor is responsible to provide adequate time in the completion of the construction to perform these system tests prior to final inspections in the affected areas/systems.

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E. The Contractor is responsible for ensuring all required system tests are conducted successfully and recording associated test data and results.

F. The Contractor is responsible for contacting the Architect and Engineer at least two weeks prior to system test availability and schedule acceptable to Architect/Engineer for on-site testing.

G. If, in the Architect's and Engineer's opinion, the test results indicate that the systems' installation is not adequately complete for testing, the testing shall be re-scheduled and the Contractor shall be responsible to prepare for such re-test.

H. Prior to Owner occupancy, all system testing shall be completed and approved.

3.08 PROTECTION OF MATERIALS AND EQUIPMENT

A. Requirements: Do not store fiberglass insulation or any equipment within the building until it has been "dried in". If dry space is unavailable and the insulation and equipment must be installed or stored before the building is "dried in" and completely enclosed, provide polyethylene film cover for protection.

B. Replacement of Damaged Stored Material and Equipment: Any material and equipment that has been wet or otherwise damaged prior to installation, in the opinion of the Architect, shall be replaced with new material regardless of the condition of the material and equipment at the time of installation.

C. Repair of Damaged Installed Material and Equipment: After installation correct or repair dents, scratches and other visible blemishes. At the direction of Architect replace or repair to "as new" condition equipment which has been damaged during construction.

D. During construction, all piping and ductwork system openings shall be capped with at least two layers of polyethylene film, fastened tightly in place with banding material or foil tape until connection of the continuation of such piping or ductwork is occurring.

E. All air diffusers serving critical care areas shall be disinfected per owner infection control guidelines with a commercial germicide complying with EPA regulations utilizing per manufacturer use standards prior to building occupancy.

3.09 ASBESTOS AND HAZARDOUS MATERIALS

A. General: Should asbestos or other hazardous material be encountered during execution of the work, or should the presence of asbestos or other hazardous material be suspected, immediately notify the Architect and suspend work in the affected area. The Owner will initiate a study to

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determine if asbestos or other hazardous materials are present and will determine what action will be taken. Removal of asbestos or other hazardous materials will be done under a separate contract.

3.10 COORDINATION OF SERVICES

A. General: Coordinate interruption of services to Owner-occupied areas in writing in advance with the Architect. Shutdown time and duration of services interruption shall be decided by the Owner. Provide shutoff valves at points of interconnection to minimize downtime. Procedures incidental to the outage shall be prepared in advance to minimize downtime.

B. General: Coordinate interruption of existing services in writing at least 1 week in advance with the Architect. Shutdown time and duration of services interruption shall be decided by the Owner. Provide shutoff valves at points of interconnection to minimize downtime. Procedures incidental to the outage shall be prepared in advance to minimize downtime.

C. Fire Safety in Existing facilities: Do not decrease the fire rating of walls, partitions, ceilings, floors, doors or combinations thereof in adjacent areas or means of egress. Do not interrupt fire sprinkling or life safety systems without prior coordination with the Architect. Inform all necessary parties (Fire Department, Owner's insurance carrier, etc.) in advance, prior to and immediately after shutdown, disconnection or isolation of any portion of life safety or fire sprinkler system.

D. Protection of Facilities: Portions of the building may be operational during construction. Maintain operation of the equipment and systems whenever the installation interfaces with existing equipment or systems. Provide protection for the building, its contents and occupants wherever installation under the contract is performed. As necessary, move, store, and protect furniture, office fixtures and carpets. Provide acoustical isolation of the work area with temporary doors, partitions, etc., to allow normal work functions. Provide exhaust fans, temporary dust barrier partitions and any containment measures required to prevent dirt, dust or fumes from reaching adjacent occupied spaces as required by the Owner or Architect. Access to the building, including exit stairs, doors and passageways, and loading dock and other delivery areas shall be kept open and continuously accessible to the occupants. Workmen shall be confined to those areas directly involved in the project installation, and only during time periods indicated and approved by the Owner.

3.11 LAYOUT OF EXISTING EQUIPMENT

A. General: Existing equipment, piping, ductwork, etc., as indicated on the drawings have, for the most part, been provided to the Architect through existing drawings. The layouts shown may not be from as-built drawings and may be from partial copies of original design documents not produced by the Architect. The Architect is not responsible for the accuracy nor completeness of the existing installation and all layouts are shown for

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reference only. It is to be understood that unforeseen conditions probably exist and that existing and new work may not be field located exactly as shown on the drawings. Verify existing conditions in the field and notify the Architect of any deviations required to install the work as shown. Coordinate new work with existing equipment, including removing, relocating, rerouting, extending with new materials, and reinstall existing piping, ductwork, conduits, wiring, tubing, supports and other equipment. The Architect shall make the final decision on all deviations or modifications required by the existing conditions.

3.12 OWNERSHIP OF REMOVED EQUIPMENT

A. General: Construction materials and items of mechanical and electrical equipment which are removed and not reused shall be removed from the job-site unless indicated as to be retained for the Owner. Include rigging, removal and hauling cost, as well as any salvage value, in the contract.

3.13 CLEAN-UP

A. General: Debris and rubbish shall not be disposed into the Owner's containers.

END OF SECTION 23 00 10

ACCEPTANCE TESTING CHECKLIST

1. AIR HANDLING UNIT # _______________ OK N/A

FANS AND CASING SECTIONS:

1. Spring isolators installed and not bottomed out.2. Motor rotation correct and free fan wheel rotation.3. Motor belts aligned and properly tensioned.4. Proper starter/VFD installed and labeled.5. Bearing races secured tight to fan shaft.6. Bearing grease cert fitting accessible and lubricated.7. All bolts, fasteners, and set screws checked & tightened.

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8. At full speed, fans have no unusual noise or vibration.9. All safety guards are properly installed.10. Access doors close tightly, door gaskets installed. 11. Casing/duct sealed with proper sealant.12. Proper insulation installed on casing and duct, and joints sealed.13. No evidence of air escaping unit or insulation ballooning w/fans on.14. No evidence of negative machine room pressure with fans operating.16. Duct static pressure control sensor installed at proper location.(as applicable)18. Flex connection at fan discharge installed.19. Condensate drain trapped properly and run to floor drain.20. Manufacturer’s required clearances for unit/components maintained.21. Dampers/actuators properly installed & close tightly.22. Damper linkage checked for binding, min. play & right blades.23. Required maintenance clearances maintained.24. Filters installed tightly and checked for no bypass.25. Metal spacers installed in filter rack.27. Air Handler control system operational.

REFRIGERANT COILS

1. Coils clean and fins in good condition.2. No open area around coil for air bypass.3. Coil piped for counter flow.4 Refrigerant pipe complete and piping properly supported.5. Refrigerant pipe is properly insulated and labeled.6. Refrigerant pipe pressure test complete and no leaks.7. Air bleed valves with caps installed.8. Dirt leg drain valve w/hose bib connections & caps installed.9. Piping, valves, and clearances accommodate coil removal.10. Condensate pan, drain, and trap drains condensate properly.

Air Handing Unit Comments:

Approvals:

______________________Date__________________________Date_____

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Mech. Contractor Signature GC PM/Sys. Engineer Signature

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2. TERMINAL BOX #______ OKN/A

1. At least 1 & 1/2 box inlet diameter of hard duct attached to box inlet. 2. Run out from lateral is the correct size.3. Required clearance for servicing box.4. Electrical connections complete.5. Box properly located and supported.

Terminal Box Comments:

Approvals:

______________________Date__________________________Date_____

Mech. Contractor Signature GC PM/Sys. Engineer Signature

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3. BOILER # ____________OK N/A

1. Unit is level.2. All bolts are tight.3. Clearance for maintenance and tube pull verified.4. Gas line connected.5. Gas pressure correct for burner. 6. Gas vents are installed correctly.7. Relief valves are correctly installed.8. Flue stack installed and complete with thermometer mounted.9. Verify external pipe connections are to the correct boiler opening. 10. Verify PRV’s are at the correct settings.11. Boiler feed piped with SCH 80 pipe and heavy duty fittings.12. Boiler feed check valves installed correctly.13. Flue drain installed.14. Chemical feed installed correctly15. Factory representative start-up completed & documented.16. Condensate acid neutralizer installed.17. Condensate trap installed and drains back to acid neutralizer tank.18. CPVC flue installed19.

Boiler Comments:

Approvals:

______________________Date__________________________Date_____

Mech. Contractor Signature GC PM/Sys. Engineer Signature

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REQUEST FOR SUBSTITUTION (Must be Submitted Prior to Bid)

Project Name: _________________________ Location: ____________________

Date of Request: ____________________________

Name of Party Requesting Substitute:

_________________________________________________________________

Reason for Substitution Request:

_________________________________________________________________

Drawing Spec. Sect. No. Paragraph Specified Item Manu Model

_______ _______________ _________ __________ ________ _______

Proposed Substitute: _______________________________________________

Manufacturer and Model Number:_________________________________________________________________

Deviations from the Specified Item: (See paragraph entitled "Deviations".)

Reason for Substitution:

Changes to Other Systems to Permit Use of Proposed Substitute:(List changes. Submit drawings if required for clarity.)

Technical Data to Support Request for Acceptance:(List ASTM or other standards designations, testing laboratory reports, experience records, etc.)

Other Supporting Data:(Submit brochures, samples, drawings, etc.)

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REQUEST FOR SUBSTITUTION (Continued)

Certification: In making request for substitution, the party whose authorized signature appears below, certifies that all of the following statements are correct and are accepted without exception:

The proposed substitution has been personally investigated and is equal or superior in all significant respects to the product specified for the specific applications required;

The proposed substitution will be warranted under the same terms required for the specified product;

Coordination aspects necessitated by the proposed substitution will be accomplished in a complete and proper fashion by the party signing this form without any additional cost to the Owner; and

Claims against the Owner for additional costs related to the proposed substitution which subsequently become apparent after acceptance by the Architect are hereby waived.

Credit: If this substitution is acceptable the following credit shall be given to the Owner;

$__________________________═════════════════════════════════════════════════════════

CERTIFICATION OF EQUIVALENT PERFORMANCE AND ASSUMPTION OF LIABILITY FOR EQUIVALENT PERFORMANCE

The undersigned states that the function, appearance and quality are equivalent or superior to the specified item.

Submitted by: _________________________________________________Signature Title

Typed Name: ______________________________________

Company: ________________________________________

Signature shall be by person having authority to legally bind his firm to the above terms. Failure to provide a legally binding signature will invalidate this request.

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SECTION 23 05 13COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes general requirements for single-phase and poly-phase, general-purpose, horizontal, small and medium, squirrel-cage induction motors for use on ac power systems up to 600 V and installed at equipment manufacturer's factory or shipped separately by equipment manufacturer for field installation.

1.3 COORDINATION

A. Coordinate features of motors, installed units, and accessory devices to be compatible with the following:1. Motor controllers.2. Torque, speed, and horsepower requirements of the load.3. Ratings and characteristics of supply circuit and required control sequence.4. Ambient and environmental conditions of installation location.

PART 2 - PRODUCTS

2.1 GENERAL MOTOR REQUIREMENTS

A. Comply with requirements in this Section except when stricter requirements are specified in HVAC equipment schedules or Sections.

B. Comply with NEMA MG 1 unless otherwise indicated.

C. Comply with IEEE 841 for severe-duty motors.

2.2 MOTOR CHARACTERISTICS

A. Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 3300 feet above sea level.

B. Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected loads at designated speeds, at installed altitude and environment, with

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indicated operating sequence, and without exceeding nameplate ratings or considering service factor.

2.3 POLYPHASE MOTORS

A. Description: NEMA MG 1, Design B, medium induction motor.

B. Efficiency: Energy efficient, as defined in NEMA MG 1.

C. Service Factor: 1.15.

D. Multispeed Motors: Variable torque.1. For motors with 2:1 speed ratio, consequent pole, single winding.2. For motors with other than 2:1 speed ratio, separate winding for each speed.

E. Rotor: Random-wound, squirrel cage.

F. Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading.

G. Temperature Rise: Match insulation rating.

H. Insulation: Class F.

I. Code Letter Designation:1. Motors 15 HP and Larger: NEMA starting Code F or Code G.2. Motors Smaller than 15 HP: Manufacturer's standard starting characteristic.

J. Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor frame sizes smaller than 324T.

2.4 POLYPHASE MOTORS WITH ADDITIONAL REQUIREMENTS

A. Motors Used with Reduced-Voltage and Multispeed Controllers: Match wiring connection requirements for controller with required motor leads. Provide terminals in motor terminal box, suited to control method.

B. Motors Used with Variable Frequency Controllers: Ratings, characteristics, and features coordinated with and approved by controller manufacturer.1. Windings: Copper magnet wire with moisture-resistant insulation varnish,

designed and tested to resist transient spikes, high frequencies, and short time rise pulses produced by pulse-width modulated inverters.

2. Energy- and Premium-Efficient Motors: Class B temperature rise; Class F insulation.

3. Inverter-Duty Motors: Class F temperature rise; Class H insulation.4. Thermal Protection: Comply with NEMA MG 1 requirements for thermally

protected motors.5. Shaft Grounding Rings:

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a. All motors controlled by Variable Frequency Controllers shall be equipped with Shaft Grounding Ring kits. Kits shall be installed by motor or equipment manufacturer or installed in the field by contractor in accordance with NEMA MG-1 31.4.4.3. Shaft Grounding Ring kits shall be manufactured by AEGIS or approved equal.

b. Ensure Shaft Grounding Kit is installed on motors in accordance with the manufacturer’s recommendations.

c. Motors shall be NEMA Premium® and inverter duty and have class F, G or H insulation and have the capability to install Shaft Grounding Ring. Motors shall be Marathon (Mod Central), Baldor (Mod Express) or approved equal.

C. Severe-Duty Motors: Comply with IEEE 841, with 1.15 minimum service factor.

2.5 SINGLE-PHASE MOTORS

A. Motors larger than 1/20 hp shall be one of the following, to suit starting torque and requirements of specific motor application:1. Permanent-split capacitor.2. Split phase.3. Capacitor start, inductor run.4. Capacitor start, capacitor run.

B. Multispeed Motors: Variable-torque, permanent-split-capacitor type.

C. Bearings: Prelubricated, antifriction ball bearings or sleeve bearings suitable for radial and thrust loading.

D. Motors 1/20 HP and Smaller: Shaded-pole type.

E. Thermal Protection: Internal protection to automatically open power supply circuit to motor when winding temperature exceeds a safe value calibrated to temperature rating of motor insulation. Thermal-protection device shall automatically reset when motor temperature returns to normal range.

PART 3 - EXECUTION (Not Applicable)

END OF SECTION 23 05 13

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SECTION 23 05 19METERS AND GAGES FOR HVAC PIPING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Thermometers.2. Gages.3. Test plugs.

1.3 DEFINITIONS

A. CR: Chlorosulfonated polyethylene synthetic rubber.

B. EPDM: Ethylene-propylene-diene terpolymer rubber.

1.4 SUBMITTALS

A. Product Data: For each type of product indicated; include performance curves.

B. Shop Drawings: Schedule for thermometers, gages, flow meters and thermal-energy meters indicating manufacturer's number, scale range, and location for each.

C. Operation and Maintenance Data: For flow meters to include in emergency, operation, and maintenance manuals.

PART 2 - PRODUCTS

2.1 METAL-CASE, LIQUID-IN-GLASS THERMOMETERS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Trerice, H. O. Co.

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2. Weiss Instruments, Inc.3. Weksler Instruments Operating Unit; Dresser Industries; Instrument Div.

B. Case: Die-cast aluminum, 9 inches long.

C. Tube: Red or blue reading, mercury or organic-liquid filled, with magnifying lens.

D. Tube Background: Satin-faced, non-reflective aluminum with permanently etched scale markings.

E. Window: Glass or plastic

F. Connector: Adjustable type, 180 degrees in vertical plane, 360 degrees in horizontal plane, with locking device

G. Stem: Copper-plated steel, aluminum, or brass for thermowell installation and of length to suit installation.

H. Accuracy: Plus or minus 1 percent of range or plus or minus 1 scale division to maximum of 1.5 percent of range.

2.2 THERMOWELLS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Trerice, H. O. Co.2. Weiss Instruments, Inc.3. Weksler Instruments Operating Unit; Dresser Industries; Instrument Div.

B. Manufacturers: Same as manufacturer of thermometer being used.

C. Description: Pressure-tight, socket-type metal fitting made for insertion into piping and of type, diameter, and length required to hold thermometer.

2.3 PRESSURE GAGES

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Trerice, H. O. Co.2. Weiss Instruments, Inc.3. Weksler Instruments Operating Unit; Dresser Industries; Instrument Div.

B. Direct-Mounting, Dial-Type Pressure Gages: Indicating-dial type complying with ASME B40.100.

1. Case: Liquid-filled type, cast aluminum, 4-1/2-inch diameter.

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2. Pressure-Element Assembly: Bourdon tube, unless otherwise indicated.3. Pressure Connection: Brass, NPS 1/4, bottom-outlet type unless back-outlet

type is indicated.4. Movement: Mechanical, with link to pressure element and connection to pointer.5. Dial: Satin-faced, non-reflective aluminum with permanently etched scale

markings.6. Pointer: dark-color metal.7. Window: Glass or plastic8. Ring: Brass.9. Accuracy: Grade A, plus or minus 1 percent of whole scale.10. Vacuum-Pressure Range: 30-in. Hg of vacuum to 15 psig of pressure.11. Range for Fluids under Pressure: Two times operating pressure.

C. Pressure-Gage Fittings:

1. Valves: NPS 1/4 brass or stainless-steel needle type.2. Syphons: NPS 1/4 coil of brass tubing with threaded ends.3. Snubbers: ASME B40.5, NPS 1/4 brass bushing with corrosion-resistant,

porous-metal disc of material suitable for system fluid and working pressure.

2.4 TEST PLUGS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Flow Design, Inc.2. Sisco Manufacturing Co.3. Pete’s Plug

B. Description: Corrosion-resistant brass or stainless-steel body with core inserts and gasketed and threaded cap, with extended stem for units to be installed in insulated piping.

C. Minimum Pressure and Temperature Rating: 1000 psig at 200 deg F.

D. Core Inserts: One or two self-sealing rubber valves.

1. Insert material for air, water, oil, or gas service at 20 to 200 deg F shall be CR.2. Insert material for air or water service at minus 30 to plus 275 deg F shall be

EPDM.

E. Test Kit: Furnish two test kit(s) containing one pressure gage and adaptor, two thermometer, and carrying case. Pressure gage, adapter probes, and thermometer sensing elements shall be of diameter to fit test plugs and of length to project into piping.

1. Pressure Gage: Small bourdon-tube insertion type with 3-inch diameter dial and probe. Dial range shall be 0 to 200 psig

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2. Low-Range Thermometer: Small bimetallic insertion type with 2-inch diameter dial and tapered-end sensing element. Dial ranges shall be 25 to 125 deg F .

3. High-Range Thermometer: Small bimetallic insertion type with 2-inch diameter dial and tapered-end sensing element. Dial ranges shall be 0 to 220 deg F.

4. Carrying case shall have formed instrument padding.

PART 3 - EXECUTION

3.1 THERMOMETER APPLICATIONS

A. Install liquid-in-glass thermometers in the following locations:

1. Inlet and outlet of each hydronic zone.2. Inlet and outlet of each hydronic coil in air-handling units.3. Inlet and outlet of each hydronic energy-recovery unit.

B. Provide the following temperature ranges for thermometers:

1. Heating Hot Water: 30 to 240 deg F, with 2-degree scale divisions.2. Chilled Water: 0 to 100 deg F, with 2-degree scale divisions.

3.2 GAGE APPLICATIONS

A. Install liquid-filled case-type pressure gages at chilled water in the following locations:

1. Inlet and outlet of each hydronic zone.2. Inlet and outlet of each hydronic coil in air-handling units.3. Inlet and outlet of each hydronic energy-recovery unit

3.3 INSTALLATIONS

A. Install thermowells with socket extending to center of pipe and in vertical position in piping tees where thermometers are indicated.

B. Install direct-mounting pressure gages in piping tees with pressure gage located on pipe at most readable position.

C. Install needle-valve and snubber fitting in piping for each pressure gage for fluids (except steam).

D. Install test plugs in tees in piping.

E. Assemble and install connections, tubing, and accessories between flow-measuring elements and flowmeters as prescribed by manufacturer's written instructions.

F. Install flowmeter elements in accessible positions in piping systems.

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G. Install differential-pressure-type flowmeter elements with at least minimum straight lengths of pipe upstream and downstream from element as prescribed by manufacturer's written instructions.

H. Install permanent indicators on walls or brackets in accessible and readable positions.

I. Install connection fittings for attachment to portable indicators in accessible locations.

J. Mount meters on wall if accessible; if not, provide brackets to support meters.

K. All gauges and thermometer to be readable by a person standing on the floor.

3.4 CONNECTIONS

A. Install meters and gages adjacent to machines and equipment to allow service and maintenance for meters, gages, machines, and equipment.

END OF SECTION 230519

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SECTION 23 05 23GENERAL-DUTY VALVES FOR HVAC PIPING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:1. Bronze ball valves.2. Iron, single-flange butterfly valves.3. Bronze swing check valves.4. Iron swing check valves.5. Chainwheels.

B. Related Sections:

1. Division 23 HVAC piping Sections for specialty valves applicable to those Sections only.

2. Division 23 Section "Identification for HVAC Piping and Equipment" for valve tags and schedules.

1.3 DEFINITIONS

A. CWP: Cold working pressure.

B. EPDM: Ethylene propylene copolymer rubber.

C. NBR: Acrylonitrile-butadiene, Buna-N, or nitrile rubber.

D. NRS: Nonrising stem.

E. OS&Y: Outside screw and yoke.

F. RS: Rising stem.

G. SWP: Steam working pressure.

1.4 SUBMITTALS

A. Product Data: For each type of valve indicated.

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1.5 QUALITY ASSURANCE

A. Source Limitations for Valves: Obtain each type of valve from single source from single manufacturer.

B. ASME Compliance:

1. ASME B16.10 and ASME B16.34 for ferrous valve dimensions and design criteria.

2. ASME B31.1 for power piping valves.3. ASME B31.9 for building services piping valves.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Prepare valves for shipping as follows:

1. Protect internal parts against rust and corrosion.2. Protect threads, flange faces, grooves, and weld ends.3. Set angle and globe valves closed to prevent rattling.4. Set ball and plug valves open to minimize exposure of functional surfaces.5. Set butterfly valves closed or slightly open.6. Block check valves in either closed or open position.

B. Use the following precautions during storage:

1. Maintain valve end protection.2. Store valves indoors and maintain at higher than ambient dew point temperature.

If outdoor storage is necessary, store valves off the ground in watertight enclosures.

C. Use sling to handle large valves; rig sling to avoid damage to exposed parts. Do not use handwheels or stems as lifting or rigging points.

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS FOR VALVES

A. Valve Pressure and Temperature Ratings: Not less than indicated and as required for system pressures and temperatures.

B. Valve Sizes: Same as upstream piping unless otherwise indicated.

C. Valve Actuator Types:

1. Gear Actuator: For quarter-turn valves NPS 8 and larger.2. Handwheel: For valves other than quarter-turn types.3. Handlever: For quarter-turn valves NPS 6 and smaller except plug valves.

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4. Chainwheel: In exposed locations where valve is installed greater than 8 feet above finished floor. Extend chain to 50 inches above finished floor.

D. Valves in Insulated Piping: Provide stem extensions matching insulation thickness and the following features:1. Ball Valves: With extended operating handle of non-thermal-conductive material,

and protective sleeve that allows operation of valve without breaking the vapor seal or disturbing insulation.

2. Butterfly Valves: With extended neck.3. Triple Duty Valve: Shall not be used.

E. Valve-End Connections:

1. Flanged: With flanges according to ASME B16.1 for iron valves.2. Grooved: With grooves according to AWWA C606.3. Solder Joint: With sockets according to ASME B16.18.4. Threaded: With threads according to ASME B1.20.1.

F. Valve Bypass and Drain Connections: MSS SP-45.

2.2 BRONZE BALL VALVES

A. Two-Piece, Full-Port, Bronze Ball Valves with Stainless-Steel Trim:

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. Conbraco Industries, Inc.; Apollo Valves.b. Crane Co.; Crane Valve Group; Crane Valves.c. Hammond Valve.d. Lance Valves; a division of Advanced Thermal Systems, Inc.e. Milwaukee Valve Company.f. NIBCO INC.g. Watts Regulator Co.; a division of Watts Water Technologies, Inc.

2. Description:

a. Standard: MSS SP-110.b. SWP Rating: 150 psig.c. CWP Rating: 600 psig.d. Body Design: Two piece.e. Body Material: Bronze.f. Ends: Threaded.g. Seats: PTFE or TFE.h. Stem: Stainless steel.i. Ball: Stainless steel, vented.j. Port: Full.

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2.3 IRON, SINGLE-FLANGE BUTTERFLY VALVES

A. 150 CWP, Iron, Single-Flange Butterfly Valves with EPDM Seat and Stainless-Steel Disc:

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. ABZ Valve and Controls; a division of ABZ Manufacturing, Inc.b. Bray Controls; a division of Bray International.c. Conbraco Industries, Inc.; Apollo Valves.d. Cooper Cameron Valves; a division of Cooper Cameron Corp.e. Crane Co.; Crane Valve Group; Jenkins Valves.f. Crane Co.; Crane Valve Group; Stockham Division.g. DeZurik Water Controls.h. Hammond Valve.i. Kitz Corporation.j. Milwaukee Valve Company.k. Mueller Steam Specialty; a division of SPX Corporation.l. NIBCO INC.m. Norriseal; a Dover Corporation company.n. Red-White Valve Corporation.o. Spence Strainers International; a division of CIRCOR International.p. Sure Flow Equipment Inc.q. Tyco Valves & Controls; a unit of Tyco Flow Control.r. Watts Regulator Co.; a division of Watts Water Technologies, Inc.

2. Description:

a. Standard: MSS SP-67, Type I.b. CWP Rating: 150 psig.c. Body Design: Lug type; suitable for bidirectional dead-end service at rated

pressure without use of downstream flange.d. Body Material: ASTM A 126, cast iron or ASTM A 536, ductile iron.e. Seat: EPDM.f. Stem: One- or two-piece 416 stainless steel.g. Disc: 316 Stainless steel.

2.4 BRONZE SWING CHECK VALVES

A. Class 150, Bronze Swing Check Valves with Bronze Disc:

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. American Valve, Inc.b. Crane Co.; Crane Valve Group; Crane Valves.

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c. Crane Co.; Crane Valve Group; Jenkins Valves.d. Crane Co.; Crane Valve Group; Stockham Division.e. Kitz Corporation.f. Milwaukee Valve Company.g. NIBCO INC.h. Red-White Valve Corporation.i. Zy-Tech Global Industries, Inc.

2. Description:

a. Standard: MSS SP-80, Type 3.b. CWP Rating: 300 psig.c. Body Design: Horizontal flow.d. Body Material: ASTM B 62, bronze.e. Ends: Threaded.f. Disc: Bronze.

2.5 IRON SWING CHECK VALVES WITH CLOSURE CONTROL

A. Class 125, Iron Swing Check Valves with Spring-Closure Control(non-slam)

1. Description:

a. Standard: MSS SP-71, Type I.b. NPS 2-1/2 to NPS 12, CWP Rating: 200 psigc. NPS 14 to NPS 24, CWP Rating: 150 psigd. Body Design: Clear or full waterway.e. Body Material: ASTM A 126, gray iron with bolted bonnet.f. Ends: Flanged.g. Trim: Bronze.h. Gasket: Asbestos free.i. Closure Control: Factory-installed, exterior spring.

2.6 CHAINWHEELS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Babbitt Steam Specialty Co.2. Roto Hammer Industries.3. Trumbull Industries.

B. Description: Valve actuation assembly with sprocket rim, brackets, and chain.

1. Brackets: Type, number, size, and fasteners required to mount actuator on valve.

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2. Attachment: For connection to butterfly valve stems.3. Sprocket Rim with Chain Guides: Ductile or cast iron, of type and size required

for valve. Include zinc coating.4. Chain: Hot-dip, galvanized steel or Stainless steel, of size required to fit sprocket

rim.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove special packing materials, such as blocks, used to prevent disc movement during shipping and handling.

B. Operate valves in positions from fully open to fully closed. Examine guides and seats made accessible by such operations.

C. Examine threads on valve and mating pipe for form and cleanliness.

D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper size, length, and material. Verify that gasket is of proper size, that its material composition is suitable for service, and that it is free from defects and damage.

E. Do not attempt to repair defective valves; replace with new valves.

3.2 VALVE INSTALLATION

A. Install valves with unions or flanges at each piece of equipment arranged to allow service, maintenance, and equipment removal without system shutdown.

B. Locate valves for easy access and provide separate support where necessary.

C. Install valve stems and handles horizontal to piping in horizontal piping runs for ease of operation and visiblity.

D. Install valves in position to allow full stem movement.

E. Install chainwheels on operators for butterfly valves NPS 4 and larger and more than 96 inches above floor. Extend chains to 60 inches above finished floor.

F. Install check valves for proper direction of flow and as follows:

1. Swing Check Valves: In horizontal position with hinge pin level.

3.3 ADJUSTING

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A. Adjust or replace valve packing after piping systems have been tested and put into service but before final adjusting and balancing. Replace valves if persistent leaking occurs.

3.4 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS

A. If valve applications are not indicated, use the following:

1. Shutoff Service: Ball,or butterfly valves.2. Butterfly Valve Dead-End Service: Single-flange (lug) type.3. Throttling Service except Steam: ball valves.

B. If valves with specified SWP classes or CWP ratings are not available, the same types of valves with higher SWP classes or CWP ratings may be substituted.

C. Select valves, except wafer types, with the following end connections:

1. For Copper Tubing, NPS 2 1/2 and Smaller: Threaded ends except where solder-joint valve-end option is indicated in valve schedules below.

2. For Copper Tubing, NPS 3 and larger: Flanged ends 3. For Steel Piping, NPS 2 1/2 and Smaller: Threaded ends.4. For Steel Piping, NPS 3 and larger: Flanged ends

3.5 CHILLED-WATER VALVE SCHEDULE

A. Pipe NPS 2 ½ and Smaller:

1. Ball Valves: Two piece, full port, bronze with stainless-steel rim.2. Bronze Swing Check Valves: Class 150, bronze disc.

B. Pipe 3 and Larger:

1. Iron, Single-Flange Butterfly Valves,

2. Iron Swing Check Valves

3.6 HEATING-WATER VALVE SCHEDULE

A. Pipe NPS 2 ½ and Smaller:

1. Ball Valves: Two piece, full port, bronze with stainless-steel trim.2. Bronze Swing Check Valves: Class 150, bronze disc.

B. Pipe NPS 3 and Larger:1. Iron, Single-Flange Butterfly Valves.2. Iron Swing Check Valves:

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END OF SECTION 230523

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SECTION 23 05 93TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Balancing Air Systems:

a. Constant-volume air systems.b. Variable-air-volume systems.

2. Balancing Hydronic Piping Systems:

a. Constant-flow hydronic systems.

1.3 DEFINITIONS

A. AABC: Associated Air Balance Council.

B. NEBB: National Environmental Balancing Bureau.

C. TAB: Testing, adjusting, and balancing.

D. TABB: Testing, Adjusting, and Balancing Bureau.

E. TAB Specialist: An entity engaged to perform TAB Work.

1.4 SUBMITTALS

A. LEED Submittal:

1. Air-Balance Report for LEED Prerequisite EQ 1: Documentation of work performed for ASHRAE 62.1-2004, Section 7.2.2, "Air Balancing."

B. Qualification Data: Within 30 days of Contractor's Notice to Proceed, submit documentation that the TAB contractor and this Project's TAB team members meet the qualifications specified in "Quality Assurance" Article.

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C. Contract Documents Examination Report: Within 30 days of Contractor's Notice to Proceed, submit the Contract Documents review report as specified in Part 3.

D. Strategies and Procedures Plan: Within 60 days of Contractor's Notice to Proceed, submit TAB strategies and step-by-step procedures as specified in "Preparation" Article.

E. Certified TAB reports.

F. Sample report forms.

G. Instrument calibration reports, to include the following:

1. Instrument type and make.2. Serial number.3. Application.4. Dates of use.5. Dates of calibration.

1.5 QUALITY ASSURANCE

A. TAB Contractor Qualifications: Engage a TAB entity certified by AABC NEBB .

1. TAB Field Supervisor: Employee of the TAB contractor and certified by AABC or NEBB .

2. TAB Technician: Employee of the TAB contractor and who is certified by AABC or NEBB as a TAB technician.

B. TAB Conference: Meet with Architect Owner,Construction Manager or Commissioning Authority on approval of the TAB strategies and procedures plan to develop a mutual understanding of the details. Require the participation of the TAB field supervisor and technicians. Provide seven days' advance notice of scheduled meeting time and location.

1. Agenda Items:

a. The Contract Documents examination report.b. The TAB plan.c. Coordination and cooperation of trades and subcontractors.d. Coordination of documentation and communication flow.

C. Certify TAB field data reports and perform the following:

1. Review field data reports to validate accuracy of data and to prepare certified TAB reports.

2. Certify that the TAB team complied with the approved TAB plan and the procedures specified and referenced in this Specification.

D. TAB Report Forms: Use standard TAB contractor's forms approved by Architect .

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E. Instrumentation Type, Quantity, Accuracy, and Calibration: As described in ASHRAE 111, Section 5, "Instrumentation."

1.6 PROJECT CONDITIONS

A. Full Owner Occupancy: Owner will occupy the site and existing building during entire TAB period. Cooperate with Owner during TAB operations to minimize conflicts with Owner's operations.

B. Partial Owner Occupancy: Owner may occupy completed areas of building before Substantial Completion. Cooperate with Owner during TAB operations to minimize conflicts with Owner's operations.

1.7 COORDINATION

A. Notice: Provide seven days' advance notice for each test. Include scheduled test dates and times.

B. Perform TAB after leakage and pressure tests on air and water distribution systems have been satisfactorily completed.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine the Contract Documents to become familiar with Project requirements and to discover conditions in systems' designs that may preclude proper TAB of systems and equipment.

B. Examine systems for installed balancing devices, such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Verify that locations of these balancing devices are accessible.

C. Examine the approved submittals for HVAC systems and equipment.

D. Examine design data including HVAC system descriptions, statements of design assumptions for environmental conditions and systems' output, and statements of philosophies and assumptions about HVAC system and equipment controls.

E. Examine ceiling plenums and underfloor air plenums used for supply, return, or relief air to verify that they meet the leakage class of connected ducts as specified in Division 23 Section "Metal Ducts " and are properly separated from adjacent areas. Verify that penetrations in plenum walls are sealed and fire-stopped if required.

F. Examine equipment performance data including fan and pump curves.

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1. Relate performance data to Project conditions and requirements, including system effects that can create undesired or unpredicted conditions that cause reduced capacities in all or part of a system.

2. Calculate system-effect factors to reduce performance ratings of HVAC equipment when installed under conditions different from the conditions used to rate equipment performance. To calculate system effects for air systems, use tables and charts found in AMCA 201, "Fans and Systems," or in SMACNA's "HVAC Systems - Duct Design." Compare results with the design data and installed conditions.

G. Examine system and equipment installations and verify that field quality-control testing, cleaning, and adjusting specified in individual Sections have been performed.

H. Examine test reports specified in individual system and equipment Sections.

I. Examine HVAC equipment and filters and verify that bearings are greased, belts are aligned and tight, and equipment with functioning controls is ready for operation.

J. Examine terminal units, such as variable-air-volume boxes, and verify that they are accessible and their controls are connected and functioning.

K. Examine strainers. Verify that startup screens are replaced by permanent screens with indicated perforations.

L. Examine three-way valves for proper installation for their intended function of diverting or mixing fluid flows.

M. Examine heat-transfer coils for correct piping connections and for clean and straight fins.

N. Examine system pumps to ensure absence of entrained air in the suction piping.

O. Examine operating safety interlocks and controls on HVAC equipment.

P. Report deficiencies discovered before and during performance of TAB procedures. Observe and record system reactions to changes in conditions. Record default set points if different from indicated values.

3.2 PREPARATION

A. Prepare a TAB plan that includes strategies and step-by-step procedures.

B. Complete system-readiness checks and prepare reports. Verify the following:

1. Permanent electrical-power wiring is complete.2. Hydronic systems are filled, clean, and free of air.3. Automatic temperature-control systems are operational.4. Equipment and duct access doors are securely closed.5. Balance, smoke, and fire dampers are open.6. Isolating and balancing valves are open and control valves are operational.

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7. Ceilings are installed in critical areas where air-pattern adjustments are required and access to balancing devices is provided.

8. Windows and doors can be closed so indicated conditions for system operations can be met.

3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING

A. Perform testing and balancing procedures on each system according to the procedures contained in AABC's "National Standards for Total System Balance", ASHRAE 111, NEBB's "Procedural Standards for Testing, Adjusting, and Balancing of Environmental Systems" and in this Section.

1. Comply with requirements in ASHRAE 62.1-2004, Section 7.2.2, "Air Balancing."

B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the minimum extent necessary for TAB procedures.

1. After testing and balancing, patch probe holes in ducts with same material and thickness as used to construct ducts.

2. After testing and balancing, install test ports and duct access doors that comply with requirements in Division 23 Section "Air Duct Accessories."

3. Install and join new insulation that matches removed materials. Restore insulation, coverings, vapor barrier, and finish according to Division 23 Section "HVAC Insulation."

C. Mark equipment and balancing devices, including damper-control positions, valve position indicators, fan-speed-control levers, and similar controls and devices, with paint or other suitable, permanent identification material to show final settings.

D. Take and report testing and balancing measurements in inch-pound (IP) units.

3.4 GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS

A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and recommended testing procedures. Crosscheck the summation of required outlet volumes with required fan volumes.

B. Prepare schematic diagrams of systems' "as-built" duct layouts.

C. For variable-air-volume systems, develop a plan to simulate diversity.

D. Determine the best locations in main and branch ducts for accurate duct-airflow measurements.

E. Check airflow patterns from the outdoor-air louvers and dampers and the return- and exhaust-air dampers through the supply-fan discharge and mixing dampers.

F. Locate start-stop and disconnect switches, electrical interlocks, and motor starters.

G. Verify that motor starters are equipped with properly sized thermal protection.

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H. Check dampers for proper position to achieve desired airflow path.

I. Check for airflow blockages.

J. Check condensate drains for proper connections and functioning.

K. Check for proper sealing of air-handling-unit components.

L. Verify that air duct system is sealed as specified in Division 23 Section "Metal Ducts."

3.5 PROCEDURES FOR CONSTANT-VOLUME AIR SYSTEMS

A. Adjust fans to deliver total indicated airflows within the maximum allowable fan speed listed by fan manufacturer.

1. Measure total airflow.

a. Where sufficient space in ducts is unavailable for Pitot-tube traverse measurements, measure airflow at terminal outlets and inlets and calculate the total airflow.

2. Measure fan static pressures as follows to determine actual static pressure:

a. Measure outlet static pressure as far downstream from the fan as practical and upstream from restrictions in ducts such as elbows and transitions.

b. Measure static pressure directly at the fan outlet or through the flexible connection.

c. Measure inlet static pressure of single-inlet fans in the inlet duct as near the fan as possible, upstream from the flexible connection, and downstream from duct restrictions.

d. Measure inlet static pressure of double-inlet fans through the wall of the plenum that houses the fan.

3. Measure static pressure across each component that makes up an air-handling unit, rooftop unit, and other air-handling and -treating equipment.

a. Report the cleanliness status of filters and the time static pressures are measured.

4. Measure static pressures entering and leaving other devices, such as sound traps, heat-recovery equipment, and air washers, under final balanced conditions.

5. Review Record Documents to determine variations in design static pressures versus actual static pressures. Calculate actual system-effect factors. Recommend adjustments to accommodate actual conditions.

6. Obtain approval from Architect for adjustment of fan speed higher or lower than indicated speed. Comply with requirements in Division 23 Sections for air-handling units for adjustment of fans, belts, and pulley sizes to achieve indicated air-handling-unit performance.

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7. Do not make fan-speed adjustments that result in motor overload. Consult equipment manufacturers about fan-speed safety factors. Modulate dampers and measure fan-motor amperage to ensure that no overload will occur. Measure amperage in full-cooling, full-heating, economizer, and any other operating mode to determine the maximum required brake horsepower.

B. Adjust volume dampers for main duct, submain ducts, and major branch ducts to indicated airflows within specified tolerances.

1. Measure airflow of submain and branch ducts.

a. Where sufficient space in submain and branch ducts is unavailable for Pitot-tube traverse measurements, measure airflow at terminal outlets and inlets and calculate the total airflow for that zone.

2. Measure static pressure at a point downstream from the balancing damper, and adjust volume dampers until the proper static pressure is achieved.

3. Remeasure each submain and branch duct after all have been adjusted. Continue to adjust submain and branch ducts to indicated airflows within specified tolerances.

C. Measure air outlets and inlets without making adjustments.

1. Measure terminal outlets using a direct-reading hood or outlet manufacturer's written instructions and calculating factors.

D. Adjust air outlets and inlets for each space to indicated airflows within specified tolerances of indicated values. Make adjustments using branch volume dampers rather than extractors and the dampers at air terminals.

1. Adjust each outlet in same room or space to within specified tolerances of indicated quantities without generating noise levels above the limitations prescribed by the Contract Documents.

2. Adjust patterns of adjustable outlets for proper distribution without drafts.

3.6 PROCEDURES FOR VARIABLE-AIR-VOLUME SYSTEMS

A. Compensating for Diversity: When the total airflow of all terminal units is more than the indicated airflow of the fan, place a selected number of terminal units at a minimum set-point airflow with the remainder at maximum-airflow condition until the total airflow of the terminal units equals the indicated airflow of the fan. Select the reduced-airflow terminal units so they are distributed evenly among the branch ducts.

B. Pressure-Independent, Variable-Air-Volume Systems: After the fan systems have been adjusted, adjust the variable-air-volume systems as follows:

1. Set outdoor-air dampers at minimum, and set return- and exhaust-air dampers at a position that simulates full-cooling load.

2. Select the terminal unit that is most critical to the supply-fan airflow and static pressure. Measure static pressure. Adjust system static pressure so the

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entering static pressure for the critical terminal unit is not less than the sum of the terminal-unit manufacturer's recommended minimum inlet static pressure plus the static pressure needed to overcome terminal-unit discharge system losses.

3. Measure total system airflow. Adjust to within indicated airflow.4. Set terminal units at maximum airflow and adjust controller or regulator to deliver

the designed maximum airflow. Use terminal-unit manufacturer's written instructions to make this adjustment. When total airflow is correct, balance the air outlets downstream from terminal units the same as described for constant-volume air systems.

5. Set terminal units at minimum airflow and adjust controller or regulator to deliver the designed minimum airflow. Check air outlets for a proportional reduction in airflow the same as described for constant-volume air systems.

a. If air outlets are out of balance at minimum airflow, report the condition but leave outlets balanced for maximum airflow.

6. Remeasure the return airflow to the fan while operating at maximum return airflow and minimum outdoor airflow.

a. Adjust the fan and balance the return-air ducts and inlets the same as described for constant-volume air systems.

7. Measure static pressure at the most critical terminal unit and adjust the static-pressure controller at the main supply-air sensing station to ensure that adequate static pressure is maintained at the most critical unit.

8. Record final fan-performance data.

3.7 GENERAL PROCEDURES FOR HYDRONIC SYSTEMS

A. Prepare test reports with pertinent design data, and number in sequence starting at pump to end of system. Check the sum of branch-circuit flows against the approved pump flow rate. Correct variations that exceed plus or minus 5 percent.

B. Prepare schematic diagrams of systems' "as-built" piping layouts.

C. Prepare hydronic systems for testing and balancing according to the following, in addition to the general preparation procedures specified above:

1. Open all manual valves for maximum flow.2. Check liquid level in expansion tank.3. Check makeup water-station pressure gage for adequate pressure for highest

vent.4. Check flow-control valves for specified sequence of operation, and set at

indicated flow.5. Set differential-pressure control valves at the specified differential pressure. Do

not set at fully closed position when pump is positive-displacement type unless several terminal valves are kept open.

6. Set system controls so automatic valves are wide open to heat exchangers.7. Check pump-motor load. If motor is overloaded, throttle main flow-balancing

device so motor nameplate rating is not exceeded.

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8. Check air vents for a forceful liquid flow exiting from vents when manually operated.

3.8 PROCEDURES FOR CONSTANT-FLOW HYDRONIC SYSTEMS

A. Measure water flow at pumps. Use the following procedures except for positive-displacement pumps:

1. Verify impeller size by operating the pump with the discharge valve closed. Read pressure differential across the pump. Convert pressure to head and correct for differences in gage heights. Note the point on manufacturer's pump curve at zero flow and verify that the pump has the intended impeller size.

a. If impeller sizes must be adjusted to achieve pump performance, obtain approval from Architect and comply with requirements in Division 23 Section "Hydronic Pumps."

2. Check system resistance. With all valves open, read pressure differential across the pump and mark pump manufacturer's head-capacity curve. Adjust pump discharge valve until indicated water flow is achieved.

a. Monitor motor performance during procedures and do not operate motors in overload conditions.

3. Verify pump-motor brake horsepower. Calculate the intended brake horsepower for the system based on pump manufacturer's performance data. Compare calculated brake horsepower with nameplate data on the pump motor. Report conditions where actual amperage exceeds motor nameplate amperage.

4. Report flow rates that are not within plus or minus 10 percent of design.

B. Measure flow at all automatic flow control valves to verify that valves are functioning as designed.

C. Measure flow at all pressure-independent characterized control valves, with valves in fully open position, to verify that valves are functioning as designed.

D. Set calibrated balancing valves, if installed, at calculated presettings.

E. Measure flow at all stations and adjust, where necessary, to obtain first balance.

1. System components that have Cv rating or an accurately cataloged flow-pressure-drop relationship may be used as a flow-indicating device.

F. Measure flow at main balancing station and set main balancing device to achieve flow that is 5 percent greater than indicated flow.

G. Adjust balancing stations to within specified tolerances of indicated flow rate as follows:

1. Determine the balancing station with the highest percentage over indicated flow.

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2. Adjust each station in turn, beginning with the station with the highest percentage over indicated flow and proceeding to the station with the lowest percentage over indicated flow.

3. Record settings and mark balancing devices.

H. Measure pump flow rate and make final measurements of pump amperage, voltage, rpm, pump heads, and systems' pressures and temperatures including outdoor-air temperature.

I. Measure the differential-pressure-control-valve settings existing at the conclusion of balancing.

J. Check settings and operation of each safety valve. Record settings.

3.9 PROCEDURES FOR HEAT EXCHANGERS

A. Measure water flow through all circuits.

B. Adjust water flow to within specified tolerances.

C. Measure inlet and outlet water temperatures.

D. Measure inlet steam pressure.

E. Check settings and operation of safety and relief valves. Record settings.

3.10 PROCEDURES FOR MOTORS

A. Motors, 1/2 HP and Larger: Test at final balanced conditions and record the following data:

1. Manufacturer's name, model number, and serial number.2. Motor horsepower rating.3. Motor rpm.4. Efficiency rating.5. Nameplate and measured voltage, each phase.6. Nameplate and measured amperage, each phase.7. Starter thermal-protection-element rating.

B. Motors Driven by Variable-Frequency Controllers: Test for proper operation at speeds varying from minimum to maximum. Test the manual bypass of the controller to prove proper operation. Record observations including name of controller manufacturer, model number, serial number, and nameplate data.

3.11 PROCEDURES FOR CONDENSING UNITS

A. Verify proper rotation of fans.

B. Measure entering- and leaving-air temperatures.

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C. Record compressor data.

3.12 PROCEDURES FOR BOILERS

A. Hydronic Boilers: Measure and record entering- and leaving-water temperatures and water flow.

B. Steam Boilers: Measure and record entering-water temperature and flow and leaving-steam pressure, temperature, and flow.

3.13 PROCEDURES FOR HEAT-TRANSFER COILS

A. Measure, adjust, and record the following data for each water coil:

1. Entering- and leaving-water temperature.2. Water flow rate.3. Water pressure drop.4. Dry-bulb temperature of entering and leaving air.5. Wet-bulb temperature of entering and leaving air for cooling coils.6. Airflow.7. Air pressure drop.

B. Measure, adjust, and record the following data for each electric heating coil:

1. Nameplate data.2. Airflow.3. Entering- and leaving-air temperature at full load.4. Voltage and amperage input of each phase at full load and at each incremental

stage.5. Calculated kilowatt at full load.6. Fuse or circuit-breaker rating for overload protection.

C. Measure, adjust, and record the following data for each refrigerant coil:

1. Dry-bulb temperature of entering and leaving air.2. Wet-bulb temperature of entering and leaving air.3. Airflow.4. Air pressure drop.5. Refrigerant suction pressure and temperature.

3.14 PROCEDURES FOR TESTING, ADJUSTING, AND BALANCING EXISTING SYSTEMS

A. Perform a preconstruction inspection of existing equipment that is to remain and be reused.

1. Measure and record the operating speed, airflow, and static pressure of each fan.

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2. Measure motor voltage and amperage. Compare the values to motor nameplate information.

3. Check the refrigerant charge.4. Check the condition of filters.5. Check the condition of coils.6. Check the operation of the drain pan and condensate-drain trap.7. Check bearings and other lubricated parts for proper lubrication.8. Report on the operating condition of the equipment and the results of the

measurements taken. Report deficiencies.

B. Before performing testing and balancing of existing systems, inspect existing equipment that is to remain and be reused to verify that existing equipment has been cleaned and refurbished. Verify the following:

1. New filters are installed.2. Coils are clean and fins combed.3. Drain pans are clean.4. Fans are clean.5. Bearings and other parts are properly lubricated.6. Deficiencies noted in the preconstruction report are corrected.

C. Perform testing and balancing of existing systems to the extent that existing systems are affected by the renovation work.

1. Compare the indicated airflow of the renovated work to the measured fan airflows, and determine the new fan speed and the face velocity of filters and coils.

2. Verify that the indicated airflows of the renovated work result in filter and coil face velocities and fan speeds that are within the acceptable limits defined by equipment manufacturer.

3. If calculations increase or decrease the air flow rates and water flow rates by more than 5 percent, make equipment adjustments to achieve the calculated rates. If increase or decrease is 5 percent or less, equipment adjustments are not required.

4. Balance each air outlet.

3.15 TOLERANCES

A. Set HVAC system's air flow rates and water flow rates within the following tolerances:

1. Supply, Return, and Exhaust Fans and Equipment with Fans: Plus or minus 10 percent .

2. Air Outlets and Inlets: Plus or minus 10 percent .3. Heating-Water Flow Rate: Plus or minus 10 percent .4. Cooling-Water Flow Rate: Plus or minus 10 percent .

3.16 REPORTING

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A. Initial Construction-Phase Report: Based on examination of the Contract Documents as specified in "Examination" Article, prepare a report on the adequacy of design for systems' balancing devices. Recommend changes and additions to systems' balancing devices to facilitate proper performance measuring and balancing. Recommend changes and additions to HVAC systems and general construction to allow access for performance measuring and balancing devices.

B. Status Reports: Prepare biweekly progress reports to describe completed procedures, procedures in progress, and scheduled procedures. Include a list of deficiencies and problems found in systems being tested and balanced. Prepare a separate report for each system and each building floor for systems serving multiple floors.

3.17 FINAL REPORT

A. General: Prepare a certified written report; tabulate and divide the report into separate sections for tested systems and balanced systems.

1. Include a certification sheet at the front of the report's binder, signed and sealed by the certified testing and balancing engineer.

2. Include a list of instruments used for procedures, along with proof of calibration.

B. Final Report Contents: In addition to certified field-report data, include the following:

1. Pump curves.2. Fan curves.3. Manufacturers' test data.4. Field test reports prepared by system and equipment installers.5. Other information relative to equipment performance; do not include Shop

Drawings and product data.

C. General Report Data: In addition to form titles and entries, include the following data:

1. Title page.2. Name and address of the TAB contractor.3. Project name.4. Project location.5. Architect's name and address.6. Engineer's name and address.7. Contractor's name and address.8. Report date.9. Signature of TAB supervisor who certifies the report.10. Table of Contents with the total number of pages defined for each section of the

report. Number each page in the report.11. Summary of contents including the following:

a. Indicated versus final performance.b. Notable characteristics of systems.c. Description of system operation sequence if it varies from the Contract

Documents.

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12. Nomenclature sheets for each item of equipment.13. Data for terminal units, including manufacturer's name, type, size, and fittings.14. Notes to explain why certain final data in the body of reports vary from indicated

values.15. Test conditions for fans and pump performance forms including the following:

a. Settings for outdoor-, return-, and exhaust-air dampers.b. Conditions of filters.c. Cooling coil, wet- and dry-bulb conditions.d. Face and bypass damper settings at coils.e. Fan drive settings including settings and percentage of maximum pitch

diameter.f. Inlet vane settings for variable-air-volume systems.g. Settings for supply-air, static-pressure controller.h. Other system operating conditions that affect performance.

D. System Diagrams: Include schematic layouts of air and hydronic distribution systems. Present each system with single-line diagram and include the following:

1. Quantities of outdoor, supply, return, and exhaust airflows.2. Water and steam flow rates.3. Duct, outlet, and inlet sizes.4. Pipe and valve sizes and locations.5. Terminal units.6. Balancing stations.7. Position of balancing devices.

E. Air-Handling-Unit Test Reports: For air-handling units with coils, include the following:

1. Unit Data:

a. Unit identification.b. Location.c. Make and type.d. Model number and unit size.e. Manufacturer's serial number.f. Unit arrangement and class.g. Discharge arrangement.h. Sheave make, size in inches, and bore.i. Center-to-center dimensions of sheave, and amount of adjustments in

inches.j. Number, make, and size of belts.k. Number, type, and size of filters.

2. Motor Data:

a. Motor make, and frame type and size.b. Horsepower and rpm.c. Volts, phase, and hertz.d. Full-load amperage and service factor.e. Sheave make, size in inches, and bore.

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f. Center-to-center dimensions of sheave, and amount of adjustments in inches.

3. Test Data (Indicated and Actual Values):

a. Total air flow rate in cfm.b. Total system static pressure in inches wg.c. Fan rpm.d. Discharge static pressure in inches wg.e. Filter static-pressure differential in inches wg.f. Preheat-coil static-pressure differential in inches wg.g. Cooling-coil static-pressure differential in inches wg.h. Heating-coil static-pressure differential in inches wg.i. Outdoor airflow in cfm.j. Return airflow in cfm.k. Outdoor-air damper position.l. Return-air damper position.m. Vortex damper position.

F. Apparatus-Coil Test Reports:

1. Coil Data:

a. System identification.b. Location.c. Coil type.d. Number of rows.e. Fin spacing in fins per inch o.c.f. Make and model number.g. Face area in sq. ft..h. Tube size in NPS.i. Tube and fin materials.j. Circuiting arrangement.

2. Test Data (Indicated and Actual Values):

a. Air flow rate in cfm.b. Average face velocity in fpm.c. Air pressure drop in inches wg.d. Outdoor-air, wet- and dry-bulb temperatures in deg F.e. Return-air, wet- and dry-bulb temperatures in deg F.f. Entering-air, wet- and dry-bulb temperatures in deg F.g. Leaving-air, wet- and dry-bulb temperatures in deg F.h. Water flow rate in gpm.i. Water pressure differential in feet of head or psig.j. Entering-water temperature in deg F.k. Leaving-water temperature in deg F.l. Refrigerant expansion valve and refrigerant types.m. Refrigerant suction pressure in psig.n. Refrigerant suction temperature in deg F.o. Inlet steam pressure in psig.

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G. Gas- and Oil-Fired Heat Apparatus Test Reports: In addition to manufacturer's factory startup equipment reports, include the following:

1. Unit Data:

a. System identification.b. Location.c. Make and type.d. Model number and unit size.e. Manufacturer's serial number.f. Fuel type in input data.g. Output capacity in Btu/h.h. Ignition type.i. Burner-control types.j. Motor horsepower and rpm.k. Motor volts, phase, and hertz.l. Motor full-load amperage and service factor.m. Sheave make, size in inches, and bore.n. Center-to-center dimensions of sheave, and amount of adjustments in

inches.

2. Test Data (Indicated and Actual Values):

a. Total air flow rate in cfm.b. Entering-air temperature in deg F.c. Leaving-air temperature in deg F.d. Air temperature differential in deg F.e. Entering-air static pressure in inches wg.f. Leaving-air static pressure in inches wg.g. Air static-pressure differential in inches wg.h. Low-fire fuel input in Btu/h.i. High-fire fuel input in Btu/h.j. Manifold pressure in psig.k. High-temperature-limit setting in deg F.l. Operating set point in Btu/h.m. Motor voltage at each connection.n. Motor amperage for each phase.o. Heating value of fuel in Btu/h.

H. Electric-Coil Test Reports: For electric furnaces, duct coils, and electric coils installed in central-station air-handling units, include the following:

1. Unit Data:

a. System identification.b. Location.c. Coil identification.d. Capacity in Btu/h.e. Number of stages.f. Connected volts, phase, and hertz.g. Rated amperage.

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h. Air flow rate in cfm.i. Face area in sq. ft..j. Minimum face velocity in fpm.

2. Test Data (Indicated and Actual Values):

a. Heat output in Btu/h.b. Air flow rate in cfm.c. Air velocity in fpm.d. Entering-air temperature in deg F.e. Leaving-air temperature in deg F.f. Voltage at each connection.g. Amperage for each phase.

I. Fan Test Reports: For supply, return, and exhaust fans, include the following:

1. Fan Data:

a. System identification.b. Location.c. Make and type.d. Model number and size.e. Manufacturer's serial number.f. Arrangement and class.g. Sheave make, size in inches, and bore.h. Center-to-center dimensions of sheave, and amount of adjustments in

inches.

2. Motor Data:

a. Motor make, and frame type and size.b. Horsepower and rpm.c. Volts, phase, and hertz.d. Full-load amperage and service factor.e. Sheave make, size in inches, and bore.f. Center-to-center dimensions of sheave, and amount of adjustments in

inches.g. Number, make, and size of belts.

3. Test Data (Indicated and Actual Values):

a. Total airflow rate in cfm.b. Total system static pressure in inches wg.c. Fan rpm.d. Discharge static pressure in inches wg.e. Suction static pressure in inches wg.

J. Round, Flat-Oval, and Rectangular Duct Traverse Reports: Include a diagram with a grid representing the duct cross-section and record the following:

1. Report Data:

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a. System and air-handling-unit number.b. Location and zone.c. Traverse air temperature in deg F.d. Duct static pressure in inches wg.e. Duct size in inches.f. Duct area in sq. ft..g. Indicated air flow rate in cfm.h. Indicated velocity in fpm.i. Actual air flow rate in cfm.j. Actual average velocity in fpm.k. Barometric pressure in psig.

K. Air-Terminal-Device Reports:

1. Unit Data:

a. System and air-handling unit identification.b. Location and zone.c. Apparatus used for test.d. Area served.e. Make.f. Number from system diagram.g. Type and model number.h. Size.i. Effective area in sq. ft..

2. Test Data (Indicated and Actual Values):

a. Air flow rate in cfm.b. Air velocity in fpm.c. Preliminary air flow rate as needed in cfm.d. Preliminary velocity as needed in fpm.e. Final air flow rate in cfm.f. Final velocity in fpm.g. Space temperature in deg F.

L. System-Coil Reports: For reheat coils and water coils of terminal units, include the following:

1. Unit Data:

a. System and air-handling-unit identification.b. Location and zone.c. Room or riser served.d. Coil make and size.e. Flowmeter type.

2. Test Data (Indicated and Actual Values):

a. Air flow rate in cfm.b. Entering-water temperature in deg F.

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c. Leaving-water temperature in deg F.d. Water pressure drop in feet of head or psig.e. Entering-air temperature in deg F.f. Leaving-air temperature in deg F.

M. Pump Test Reports: Calculate impeller size by plotting the shutoff head on pump curves and include the following:

1. Unit Data:

a. Unit identification.b. Location.c. Service.d. Make and size.e. Model number and serial number.f. Water flow rate in gpm.g. Water pressure differential in feet of head or psig.h. Required net positive suction head in feet of head or psig.i. Pump rpm.j. Impeller diameter in inches.k. Motor make and frame size.l. Motor horsepower and rpm.m. Voltage at each connection.n. Amperage for each phase.o. Full-load amperage and service factor.p. Seal type.

2. Test Data (Indicated and Actual Values):

a. Static head in feet of head or psig.b. Pump shutoff pressure in feet of head or psig.c. Actual impeller size in inches.d. Full-open flow rate in gpm.e. Full-open pressure in feet of head or psig.f. Final discharge pressure in feet of head or psig.g. Final suction pressure in feet of head or psig.h. Final total pressure in feet of head or psig.i. Final water flow rate in gpm.j. Voltage at each connection.k. Amperage for each phase.

N. Instrument Calibration Reports:

1. Report Data:

a. Instrument type and make.b. Serial number.c. Application.d. Dates of use.e. Dates of calibration.

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3.18 INSPECTIONS

A. Initial Inspection:

1. After testing and balancing are complete, operate each system and randomly check measurements to verify that the system is operating according to the final test and balance readings documented in the final report.

2. Check the following for each system:

a. Measure airflow of at least 25 percent of air outlets.b. Measure water flow of at least 10 percent of terminals.c. Measure room temperature at each thermostat/temperature sensor.

Compare the reading to the set point.d. Verify that balancing devices are marked with final balance position.e. Note deviations from the Contract Documents in the final report.

B. Final Inspection:

1. After initial inspection is complete and documentation by random checks verifies that testing and balancing are complete and accurately documented in the final report, request that a final inspection be made by Architect Construction Manager and or .

2. The TAB contractor's test and balance engineer shall conduct the inspection in the presence of Architect , Construction Manager, and or Commissioning Authority.

3. Architect or Commissioning Authority shall randomly select measurements, documented in the final report, to be rechecked. Rechecking shall be limited to either 10 percent of the total measurements recorded or the extent of measurements that can be accomplished in a normal 8-hour business day.

4. If rechecks yield measurements that differ from the measurements documented in the final report by more than the tolerances allowed, the measurements shall be noted as "FAILED."

5. If the number of "FAILED" measurements is greater than 10 percent of the total measurements checked during the final inspection, the testing and balancing shall be considered incomplete and shall be rejected.

C. TAB Work will be considered defective if it does not pass final inspections. If TAB Work fails, proceed as follows:

1. Recheck all measurements and make adjustments. Revise the final report and balancing device settings to include all changes; resubmit the final report and request a second final inspection.

2. If the second final inspection also fails, Owner may contract the services of another TAB contractor to complete TAB Work according to the Contract Documents and deduct the cost of the services from the original TAB contractor's final payment.

D. Prepare test and inspection reports.

3.19 ADDITIONAL TESTS

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A. Within 90 days of completing TAB, perform additional TAB to verify that balanced conditions are being maintained throughout and to correct unusual conditions.

B. Seasonal Periods: If initial TAB procedures were not performed during near-peak summer and winter conditions, perform additional TAB during near-peak summer and winter conditions.

C. The TAB shall provide a technician to support the commissioning of the project with rechecks of air and or water flow, pressure tests of duct high pressure limits, smoke detectors, coil and filter pressure drop signals, terminal air flow and space temperature, humidity and CO2 sensor verification of calibration on up to not less than 25% (or higher if the Cx A sampling is specified to be higher) of the VAV terminal, temperature control zones.

END OF SECTION 230593

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SECTION 23 07 13DUCT INSULATION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes insulating the following duct services:

1. Indoor, concealed supply and outdoor air.2. Indoor, exposed supply and outdoor air.3. Indoor, concealed return located in unconditioned space.4. Indoor, exposed return located in unconditioned space.5. Indoor, concealed exhaust between isolation damper and penetration of building

exterior.6. Indoor, exposed exhaust between isolation damper and penetration of building

exterior.

B. Related Sections:

1. Section 230716 "HVAC Equipment Insulation."2. Section 230719 "HVAC Piping Insulation."3. Section 233113 "Metal Ducts" for duct liners.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated. Include thermal conductivity, water-vapor permeance thickness, and jackets (both factory- and field-applied if any).

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

1. Detail application of protective shields, saddles, and inserts at hangers for each type of insulation and hanger.

2. Detail insulation application at elbows, fittings, dampers, specialties and flanges for each type of insulation.

3. Detail application of field-applied jackets.4. Detail application at linkages of control devices.

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1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data: For qualified Installer.

B. Material Test Reports: From a qualified testing agency acceptable to authorities having jurisdiction indicating, interpreting, and certifying test results for compliance of insulation materials, sealers, attachments, cements, and jackets, with requirements indicated. Include dates of tests and test methods employed.

C. Field quality-control reports.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship program or another craft training program certified by the Department of Labor, Bureau of Apprenticeship and Training.

B. Surface-Burning Characteristics: For insulation and related materials, as determined by testing identical products according to ASTM E 84, by a testing agency acceptable to authorities having jurisdiction. Factory label insulation and jacket materials and adhesive, mastic, tapes, and cement material containers, with appropriate markings of applicable testing agency.

1. Insulation Installed Indoors: Flame-spread index of 25 or less, and smoke-developed index of 50 or less.

2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed index of 150 or less.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Packaging: Insulation material containers shall be marked by manufacturer with appropriate ASTM standard designation, type and grade, and maximum use temperature.

1.7 COORDINATION

A. Coordinate sizes and locations of supports, hangers, and insulation shields specified in Section 230529 "Hangers and Supports for HVAC Piping and Equipment."

B. Coordinate clearance requirements with duct Installer for duct insulation application. Before preparing ductwork Shop Drawings, establish and maintain clearance requirements for installation of insulation and field-applied jackets and finishes and for space required for maintenance.

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1.8 SCHEDULING

A. Schedule insulation application after pressure testing systems and, where required, after installing and testing heat tracing. Insulation application may begin on segments that have satisfactory test results.

B. Complete installation and concealment of plastic materials as rapidly as possible in each area of construction.

PART 2 - PRODUCTS

2.1 INSULATION MATERIALS

A. Comply with requirements in "Duct Insulation Schedule, General," "Indoor Duct and Plenum Insulation Schedule," and "Aboveground, Outdoor Duct and Plenum Insulation Schedule" articles for where insulating materials shall be applied.

B. Products shall not contain asbestos, lead, mercury, or mercury compounds.

C. Products that come in contact with stainless steel shall have a leachable chloride content of less than 50 ppm when tested according to ASTM C 871.

D. Insulation materials for use on austenitic stainless steel shall be qualified as acceptable according to ASTM C 795.

E. Foam insulation materials shall not use CFC or HCFC blowing agents in the manufacturing process.

F. Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C 553, Type II and ASTM C 1290, Type III with factory-applied FSK jacket. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

1. Products: Subject to compliance with requirements, provide one of the following:

a. CertainTeed Corp.; SoftTouch Duct Wrap.b. Johns Manville; Microlite.c. Knauf Insulation; Friendly Feel Duct Wrap.d. Manson Insulation Inc.; Alley Wrap.e. Owens Corning; SOFTR All-Service Duct Wrap.

G. Mineral-Fiber Board Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C 612, Type IA or Type IB. For duct and plenum applications, provide insulation with factory-applied FSK jacket. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

1. Products: Subject to compliance with requirements, provide one of the following:

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a. CertainTeed Corp.; Commercial Board.b. Fibrex Insulations Inc.; FBX.c. Johns Manville; 800 Series Spin-Glas.d. Knauf Insulation; Insulation Board.e. Manson Insulation Inc.; AK Board.f. Owens Corning; Fiberglas 700 Series.g. .

2.2 ADHESIVES

A. Materials shall be compatible with insulation materials, jackets, and substrates and for bonding insulation to itself and to surfaces to be insulated unless otherwise indicated.

B. Mineral-Fiber Adhesive: Comply with MIL-A-3316C, Class 2, Grade A.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-127.Eagle Bridges - Marathon Industries; 225.

b. Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; 85-60/85-70.Mon-Eco Industries, Inc.; 22-25.

c. .

2. For indoor applications, adhesive shall have a VOC content of 80 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

C. ASJ Adhesive, and FSK Jacket Adhesive: Comply with MIL-A-3316C, Class 2, Grade A for bonding insulation jacket lap seams and joints.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-82.

b. Eagle Bridges - Marathon Industries; 225.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 85-50.Mon-Eco Industries, Inc.; 22-25.d. .

2. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

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2.3 MASTICS

A. Materials shall be compatible with insulation materials, jackets, and substrates; comply with MIL-PRF-19565C, Type II.

1. For indoor applications, use mastics that have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

B. Vapor-Barrier Mastic: Water based; suitable for indoor use on below ambient services.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; 30-80/30-90.

b. Vimasco Corporation; 749.c. .

2. Water-Vapor Permeance: ASTM E 96/E 96M, Procedure B, 0.013 perm at 43-mil dry film thickness.

3. Service Temperature Range: Minus 20 to plus 180 deg F.4. Solids Content: ASTM D 1644, 58 percent by volume and 70 percent by weight.5. Color: White.

2.4 LAGGING ADHESIVES

A. Description: Comply with MIL-A-3316C, Class I, Grade A and shall be compatible with insulation materials, jackets, and substrates.

1. For indoor applications, use lagging adhesives that have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

2. Products: Subject to compliance with requirements, provide one of the following:

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-50 AHV2.Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; 30-36.

b. Vimasco Corporation; 713 and 714.c. .

3. Fire-resistant, water-based lagging adhesive and coating for use indoors to adhere fire-resistant lagging cloths over duct insulation.

4. Service Temperature Range: 0 to plus 180 deg F.5. Color: White.

2.5 SEALANTS

A. FSK and Metal Jacket Flashing Sealants:

1. Products: Subject to compliance with requirements, provide one of the following:

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a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-76.Eagle Bridges - Marathon Industries; 405.

b. Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; 95-44.

c. Mon-Eco Industries, Inc.; 44-05.d. .

2. Materials shall be compatible with insulation materials, jackets, and substrates.3. Fire- and water-resistant, flexible, elastomeric sealant.4. Service Temperature Range: Minus 40 to plus 250 deg F.5. Color: Aluminum.6. For indoor applications, sealants shall have a VOC content of 420 g/L or less

when calculated according to 40 CFR 59, Subpart D (EPA Method 24).7. Sealants shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

2.6 FACTORY-APPLIED JACKETS

A. Insulation system schedules indicate factory-applied jackets on various applications. When factory-applied jackets are indicated, comply with the following:

1. ASJ: White, kraft-paper, fiberglass-reinforced scrim with aluminum-foil backing; complying with ASTM C 1136, Type I.

2. ASJ-SSL: ASJ with self-sealing, pressure-sensitive, acrylic-based adhesive covered by a removable protective strip; complying with ASTM C 1136, Type I.

3. FSK Jacket: Aluminum-foil, fiberglass-reinforced scrim with kraft-paper backing; complying with ASTM C 1136, Type II.

4. FSP Jacket: Aluminum-foil, fiberglass-reinforced scrim with polyethylene backing; complying with ASTM C 1136, Type II.

5. Vinyl Jacket: White vinyl with a permeance of 1.3 perms when tested according to ASTM E 96/E 96M, Procedure A, and complying with NFPA 90A and NFPA 90B.

2.7 FIELD-APPLIED FABRIC-REINFORCING MESH

A. Woven Glass-Fiber Fabric: Approximately 6 oz./sq. yd. with a thread count of 5 strands by 5 strands/sq. in. for covering ducts.

B. Woven Polyester Fabric: Approximately 1 oz./sq. yd. with a thread count of 10 strands by 10 strands/sq. in., in a Leno weave, for ducts.

1. Products: Subject to compliance with requirements, provide one of the following:

a. Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; Mast-A-Fab.

b. Vimasco Corporation; Elastafab 894.c. .

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2.8 FIELD-APPLIED CLOTHS

A. Woven Glass-Fiber Fabric: Comply with MIL-C-20079H, Type I, plain weave, and presized a minimum of 8 oz./sq. yd..

1. Products: Subject to compliance with requirements, provide one of the following:

a. Alpha Associates, Inc.; Alpha-Maritex 84215 and 84217/9485RW, Luben 59.

b. .

2.9 FIELD-APPLIED JACKETS

A. Field-applied jackets shall comply with ASTM C 921, Type I, unless otherwise indicated.

B. FSK Jacket: Aluminum-foil-face, fiberglass-reinforced scrim with kraft-paper backing.

C. Metal Jacket:

1. Products: Subject to compliance with requirements, provide one of the following:

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; Metal Jacketing Systems.

b. ITW Insulation Systems; Aluminum and Stainless Steel Jacketing.c. RPR Products, Inc.; Insul-Mate.d. .

2. Aluminum Jacket: Comply with ASTM B 209, Alloy 3003, 3005, 3105, or 5005, Temper H-14.

a. Sheet and roll stock ready for shop or field sizing.b. Finish and thickness are indicated in field-applied jacket schedules.c. Moisture Barrier for Indoor Applications: 1-mil- thick, heat-bonded

polyethylene and kraft paper.

2.10 SECUREMENTS

A. Bands:

1. Products: Subject to compliance with requirements, provide one of the following:

a. ITW Insulation Systems; Gerrard Strapping and Seals.b. RPR Products, Inc.; Insul-Mate Strapping, Seals, and Springs.c. .

2. Stainless Steel: ASTM A 167 or ASTM A 240/A 240M, Type 304; 0.015 inch thick, 1/2 inch wide with wing seal or closed seal.

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3. Aluminum: ASTM B 209, Alloy 3003, 3005, 3105, or 5005; Temper H-14, 0.020 inch thick, 1/2 inch wide with wing seal or closed seal.

4. Springs: Twin spring set constructed of stainless steel with ends flat and slotted to accept metal bands. Spring size determined by manufacturer for application.

B. Insulation Pins and Hangers:

1. Capacitor-Discharge-Weld Pins: Copper- or zinc-coated steel pin, fully annealed for capacitor-discharge welding, 0.106-inch- diameter shank, length to suit depth of insulation indicated.

a. Products: Subject to compliance with requirements, provide one of the following:

1) AGM Industries, Inc.; CWP-1.2) GEMCO; CD.3) Midwest Fasteners, Inc.; CD.4) Nelson Stud Welding; TPA, TPC, and TPS.5) .

2. Cupped-Head, Capacitor-Discharge-Weld Pins: Copper- or zinc-coated steel pin, fully annealed for capacitor-discharge welding, 0.106-inch- diameter shank, length to suit depth of insulation indicated with integral 1-1/2-inch galvanized carbon-steel washer.

a. Products: Subject to compliance with requirements, provide one of the following:

1) AGM Industries, Inc.; CHP-1.2) GEMCO; Cupped Head Weld Pin.3) Midwest Fasteners, Inc.; Cupped Head.4) Nelson Stud Welding; CHP.5) .

3. Metal, Adhesively Attached, Perforated-Base Insulation Hangers: Baseplate welded to projecting spindle that is capable of holding insulation, of thickness indicated, securely in position indicated when self-locking washer is in place. Comply with the following requirements:

a. Products: Subject to compliance with requirements, provide one of the following:

1) AGM Industries, Inc.; Tactoo Perforated Base Insul-Hangers.2) GEMCO; Perforated Base.3) Midwest Fasteners, Inc.; Spindle.4) .

b. Baseplate: Perforated, galvanized carbon-steel sheet, 0.030 inch thick by 2 inches square.

c. Spindle: Copper- or zinc-coated, low-carbon steel, fully annealed, 0.106-inch- diameter shank, length to suit depth of insulation indicated.

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d. Adhesive: Recommended by hanger manufacturer. Product with demonstrated capability to bond insulation hanger securely to substrates indicated without damaging insulation, hangers, and substrates.

4. Nonmetal, Adhesively Attached, Perforated-Base Insulation Hangers: Baseplate fastened to projecting spindle that is capable of holding insulation, of thickness indicated, securely in position indicated when self-locking washer is in place. Comply with the following requirements:

a. Products: Subject to compliance with requirements, provide one of the following:

1) GEMCO; Nylon Hangers.2) Midwest Fasteners, Inc.; Nylon Insulation Hangers.3) .

b. Baseplate: Perforated, nylon sheet, 0.030 inch thick by 1-1/2 inches in diameter.

c. Spindle: Nylon, 0.106-inch- diameter shank, length to suit depth of insulation indicated, up to 2-1/2 inches.

d. Adhesive: Recommended by hanger manufacturer. Product with demonstrated capability to bond insulation hanger securely to substrates indicated without damaging insulation, hangers, and substrates.

5. Self-Sticking-Base Insulation Hangers: Baseplate welded to projecting spindle that is capable of holding insulation, of thickness indicated, securely in position indicated when self-locking washer is in place. Comply with the following requirements:

a. Products: Subject to compliance with requirements, provide one of the following:

1) AGM Industries, Inc.; Tactoo Self-Adhering Insul-Hangers.2) GEMCO; Peel & Press.3) Midwest Fasteners, Inc.; Self Stick.4) .

b. Baseplate: Galvanized carbon-steel sheet, 0.030 inch thick by 2 inches square.

c. Spindle: Copper- or zinc-coated, low-carbon steel, fully annealed, 0.106-inch- diameter shank, length to suit depth of insulation indicated.

d. Adhesive-backed base with a peel-off protective cover.

6. Insulation-Retaining Washers: Self-locking washers formed from 0.016-inch- thick, galvanized-steel sheet, with beveled edge sized as required to hold insulation securely in place but not less than 1-1/2 inches in diameter.

a. Products: Subject to compliance with requirements, provide one of the following:

1) AGM Industries, Inc.; RC-150.

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2) GEMCO; R-150.3) Midwest Fasteners, Inc.; WA-150.4) Nelson Stud Welding; Speed Clips.5) .

b. Protect ends with capped self-locking washers incorporating a spring steel insert to ensure permanent retention of cap in exposed locations.

7. Nonmetal Insulation-Retaining Washers: Self-locking washers formed from 0.016-inch- thick nylon sheet, with beveled edge sized as required to hold insulation securely in place but not less than 1-1/2 inches in diameter.

a. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1) GEMCO.2) Midwest Fasteners, Inc.3) .

C. Staples: Outward-clinching insulation staples, nominal 3/4-inch- wide, stainless steel or Monel.

D. Wire: 0.080-inch nickel-copper alloy.

2.11 CORNER ANGLES

A. PVC Corner Angles: 30 mils thick, minimum 1 by 1 inch, PVC according to ASTM D 1784, Class 16354-C. White or color-coded to match adjacent surface.

B. Aluminum Corner Angles: 0.040 inch thick, minimum 1 by 1 inch, aluminum according to ASTM B 209, Alloy 3003, 3005, 3105, or 5005; Temper H-14.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions for compliance with requirements for installation tolerances and other conditions affecting performance of insulation application.

1. Verify that systems to be insulated have been tested and are free of defects.2. Verify that surfaces to be insulated are clean and dry.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

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3.2 PREPARATION

A. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will adversely affect insulation application.

3.3 GENERAL INSTALLATION REQUIREMENTS

A. Tapes are not allowed. Insulated joints shall be sealed with glass fabric and mastic.

B. Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces; free of voids throughout the length of ducts and fittings.

C. Install insulation materials, vapor barriers or retarders, jackets, and thicknesses required for each item of duct system as specified in insulation system schedules.

D. Install accessories compatible with insulation materials and suitable for the service. Install accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or dry state.

E. Install insulation with longitudinal seams at top and bottom of horizontal runs.

F. Install multiple layers of insulation with longitudinal and end seams staggered.

G. Keep insulation materials dry during application and finishing.

H. Install insulation with tight longitudinal seams and end joints. Bond seams and joints with adhesive recommended by insulation material manufacturer.

I. Install insulation with least number of joints practical.

J. Where vapor barrier is indicated, seal joints, seams, and penetrations in insulation at hangers, supports, anchors, and other projections with vapor-barrier mastic.

1. Install insulation continuously through hangers and around anchor attachments.2. For insulation application where vapor barriers are indicated, extend insulation on

anchor legs from point of attachment to supported item to point of attachment to structure. Taper and seal ends at attachment to structure with vapor-barrier mastic.

3. Install insert materials and install insulation to tightly join the insert. Seal insulation to insulation inserts with adhesive or sealing compound recommended by insulation material manufacturer.

K. Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet and dry film thicknesses.

L. Install insulation with factory-applied jackets as follows:

1. Draw jacket tight and smooth.

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2. Cover circumferential joints with 3-inch- wide strips, of same material as insulation jacket. Secure strips with adhesive and outward clinching staples along both edges of strip, spaced 4 inches o.c.

3. Overlap jacket longitudinal seams at least 1-1/2 inches. Clean and dry surface to receive self-sealing lap. Staple laps with outward clinching staples along edge at 4 inches o.c.

a. apply vapor-barrier mastic over staples.

M. Cut insulation in a manner to avoid compressing insulation more than 75 percent of its nominal thickness.

N. Finish installation with systems at operating conditions. Repair joint separations and cracking due to thermal movement.

O. Repair damaged insulation facings by applying same facing material over damaged areas. Extend patches at least 4 inches beyond damaged areas. Adhere, staple, and seal patches similar to butt joints.

3.4 PENETRATIONS

A. Insulation Installation at Roof Penetrations: Install insulation continuously through roof penetrations.

1. Seal penetrations with flashing sealant.2. For applications requiring only indoor insulation, terminate insulation above roof

surface and seal with joint sealant. For applications requiring indoor and outdoor insulation, install insulation for outdoor applications tightly joined to indoor insulation ends. Seal joint with joint sealant.

3. Extend jacket of outdoor insulation outside roof flashing at least 2 inches below top of roof flashing.

4. Seal jacket to roof flashing with flashing sealant.

B. Insulation Installation at Aboveground Exterior Wall Penetrations: Install insulation continuously through wall penetrations.

1. Seal penetrations with flashing sealant.2. For applications requiring only indoor insulation, terminate insulation inside wall

surface and seal with joint sealant. For applications requiring indoor and outdoor insulation, install insulation for outdoor applications tightly joined to indoor insulation ends. Seal joint with joint sealant.

3. Extend jacket of outdoor insulation outside wall flashing and overlap wall flashing at least 2 inches.

4. Seal jacket to wall flashing with flashing sealant.

C. Insulation Installation at Interior Wall and Partition Penetrations (That Are Not Fire Rated): Install insulation continuously through walls and partitions.

D. Insulation Installation at Fire-Rated Wall and Partition Penetrations: Terminate insulation at fire damper sleeves for fire-rated wall and partition penetrations. Externally

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insulate damper sleeves to match adjacent insulation and overlap duct insulation at least 2 inches.

1. Comply with requirements in Section 078413 "Penetration Firestopping"irestopping and fire-resistive joint sealers.

E. Insulation Installation at Floor Penetrations:

1. Duct: For penetrations through fire-rated assemblies, terminate insulation at fire damper sleeves and externally insulate damper sleeve beyond floor to match adjacent duct insulation. Overlap damper sleeve and duct insulation at least 2 inches.

2. Seal penetrations through fire-rated assemblies. Comply with requirements in Section 078413 "Penetration Firestopping."

3.5 INSTALLATION OF FLEXIBLE ELASTOMERIC INSULATION

A. Seal longitudinal seams and end joints with manufacturer's recommended adhesive to eliminate openings in insulation that allow passage of air to surface being insulated.

3.6 INSTALLATION OF MINERAL-FIBER INSULATION

A. Blanket Insulation Installation on Ducts and Plenums: Secure with adhesive and insulation pins.

1. Apply adhesives according to manufacturer's recommended coverage rates per unit area, for 100 percent coverage of duct and plenum surfaces.

2. Apply adhesive to entire circumference of ducts and to all surfaces of fittings and transitions.

3. Install either capacitor-discharge-weld pins and speed washers or cupped-head, capacitor-discharge-weld pins on sides and bottom of horizontal ducts and sides of vertical ducts as follows:

a. On duct sides with dimensions 18 inches and smaller, place pins along longitudinal centerline of duct. Space 3 inches maximum from insulation end joints, and 16 inches o.c.

b. On duct sides with dimensions larger than 18 inches, place pins 16 inches o.c. each way, and 3 inches maximum from insulation joints. Install additional pins to hold insulation tightly against surface at cross bracing.

c. Pins may be omitted from top surface of horizontal, rectangular ducts and plenums.

d. Do not overcompress insulation during installation.e. Impale insulation over pins and attach speed washers.f. Cut excess portion of pins extending beyond speed washers or bend

parallel with insulation surface. Cover exposed pins and washers with glass fabric embedded with mastic

4. For ducts and plenums with surface temperatures below ambient, install a continuous unbroken vapor barrier. Create a facing lap for longitudinal seams

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and end joints with insulation by removing 2 inches from one edge and one end of insulation segment. Secure laps to adjacent insulation section with 1/2-inch outward-clinching staples, 1 inch o.c. Install vapor barrier consisting of factory- or field-applied jacket, adhesive, vapor-barrier mastic, and sealant at joints, seams, and protrusions.

a. Repair punctures, tears, and penetrations with mastic to maintain vapor-barrier seal.

b. Install vapor stops for ductwork and plenums operating below 50 deg F at 18-foot intervals. Vapor stops shall consist of vapor-barrier mastic applied in a Z-shaped pattern over insulation face, along butt end of insulation, and over the surface. Cover insulation face and surface to be insulated a width equal to two times the insulation thickness, but not less than 3 inches.

5. Overlap unfaced blankets a minimum of 2 inches on longitudinal seams and end joints. At end joints, secure with steel bands spaced a maximum of 18 inches o.c.

6. Install insulation on rectangular duct elbows and transitions with a full insulation section for each surface. Install insulation on round and flat-oval duct elbows with individually mitered gores cut to fit the elbow.

7. Insulate duct stiffeners, hangers, and flanges that protrude beyond insulation surface with 6-inch- wide strips of same material used to insulate duct. Secure on alternating sides of stiffener, hanger, and flange with pins spaced 6 inches o.c.

B. Board Insulation Installation on Ducts and Plenums: Secure with adhesive and insulation pins.

1. Apply adhesives according to manufacturer's recommended coverage rates per unit area, for 100 percent coverage of duct and plenum surfaces.

2. Apply adhesive to entire circumference of ducts and to all surfaces of fittings and transitions.

3. Install either capacitor-discharge-weld pins and speed washers or cupped-head, capacitor-discharge-weld pins on sides and bottom of horizontal ducts and sides of vertical ducts as follows:

a. On duct sides with dimensions 18 inches and smaller, place pins along longitudinal centerline of duct. Space 3 inches maximum from insulation end joints, and 16 inches o.c.

b. On duct sides with dimensions larger than 18 inches, space pins 16 inches o.c. each way, and 3 inches maximum from insulation joints. Install additional pins to hold insulation tightly against surface at cross bracing.

c. Pins may be omitted from top surface of horizontal, rectangular ducts and plenums.

d. Do not overcompress insulation during installation.e. Cut excess portion of pins extending beyond speed washers or bend

parallel with insulation surface. Cover exposed pins and washers with glass fabric embedded with mastic.

4. For ducts and plenums with surface temperatures below ambient, install a continuous unbroken vapor barrier. Create a facing lap for longitudinal seams and end joints with insulation by removing 2 inches from one edge and one end of insulation segment. Secure laps to adjacent insulation section with 1/2-inch

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outward-clinching staples, 1 inch o.c. Install vapor barrier consisting of factory- or field-applied jacket, adhesive, vapor-barrier mastic, and sealant at joints, seams, and protrusions.

a. Repair punctures, tears, and penetrations with mastic to maintain vapor-barrier seal.

b. Install vapor stops for ductwork and plenums operating below 50 deg F at 18-foot intervals. Vapor stops shall consist of vapor-barrier mastic applied in a Z-shaped pattern over insulation face, along butt end of insulation, and over the surface. Cover insulation face and surface to be insulated a width equal to two times the insulation thickness, but not less than 3 inches.

5. Install insulation on rectangular duct elbows and transitions with a full insulation section for each surface. Groove and score insulation to fit as closely as possible to outside and inside radius of elbows. Install insulation on round and flat-oval duct elbows with individually mitered gores cut to fit the elbow.

6. Insulate duct stiffeners, hangers, and flanges that protrude beyond insulation surface with 6-inch- wide strips of same material used to insulate duct. Secure on alternating sides of stiffener, hanger, and flange with pins spaced 6 inches o.c.

3.7 FIELD-APPLIED JACKET INSTALLATION

A. Where glass-cloth jackets are indicated, install directly over bare insulation or insulation with factory-applied jackets.

1. Draw jacket smooth and tight to surface with 2-inch overlap at seams and joints.2. Embed glass cloth between two 0.062-inch- thick coats of lagging adhesive.3. Completely encapsulate insulation with coating, leaving no exposed insulation.

B. Where FSK jackets are indicated, install as follows:

1. Draw jacket material smooth and tight.2. Install lap or joint strips with same material as jacket.3. Secure jacket to insulation with manufacturer's recommended adhesive.4. Install jacket with 1-1/2-inch laps at longitudinal seams and 3-inch- wide joint

strips at end joints.5. Seal openings, punctures, and breaks in vapor-retarder jackets and exposed

insulation with vapor-barrier mastic.

C. Where PVC jackets are indicated, install with 1-inch overlap at longitudinal seams and end joints; for horizontal applications, install with longitudinal seams along top and bottom of tanks and vessels. Seal with manufacturer's recommended adhesive.

1. Apply two continuous beads of adhesive to seams and joints, one bead under lap and the finish bead along seam and joint edge.

D. Where metal jackets are indicated, install with 2-inch overlap at longitudinal seams and end joints. Overlap longitudinal seams arranged to shed water. Seal end joints with weatherproof sealant recommended by insulation manufacturer. Secure jacket with stainless-steel bands 12 inches o.c. and at end joints.

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3.8 FIRE-RATED INSULATION SYSTEM INSTALLATION

A. Where fire-rated insulation system is indicated, secure system to ducts and duct hangers and supports to maintain a continuous fire rating.

B. Insulate duct access panels and doors to achieve same fire rating as duct.

C. Install firestopping at penetrations through fire-rated assemblies. Fire-stop systems are specified in Section 078413 "Penetration Firestopping."

3.9 FINISHES

A. Insulation with ASJ, Glass-Cloth, or Other Paintable Jacket Material: Paint jacket with paint system identified below and as specified in Section 099113 "Exterior Painting" and Section 099123 "Interior Painting."

1. Flat Acrylic Finish: Two finish coats over a primer that is compatible with jacket material and finish coat paint. Add fungicidal agent to render fabric mildew proof.

a. Finish Coat Material: Interior, flat, latex-emulsion size.

B. Flexible Elastomeric Thermal Insulation: After adhesive has fully cured, apply two coats of insulation manufacturer's recommended protective coating.

C. Color: Final color as selected by Architect. Vary first and second coats to allow visual inspection of the completed Work.

D. Do not field paint aluminum or stainless-steel jackets.

3.10 FIELD QUALITY CONTROL

A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

B. Perform tests and inspections.

C. Tests and Inspections:

1. Inspect ductwork, randomly selected by Architect, by removing field-applied jacket and insulation in layers in reverse order of their installation. Extent of inspection shall be limited to one location(s) for each duct system defined in the "Duct Insulation Schedule, General" Article.

D. All insulation applications will be considered defective Work if sample inspection reveals noncompliance with requirements.

3.11 DUCT INSULATION SCHEDULE, GENERAL

A. Plenums and Ducts Requiring Insulation:

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1. Indoor, concealed supply and outdoor air.2. Indoor, exposed supply and outdoor air.3. Indoor, concealed return located in unconditioned space.4. Indoor, exposed return located in unconditioned space.5. Indoor, concealed exhaust between isolation damper and penetration of building

exterior.6. Indoor, exposed exhaust between isolation damper and penetration of building

exterior.

B. Items Not Insulated:

1. Fibrous-glass ducts.2. Metal ducts with duct liner of sufficient thickness to comply with energy code and

ASHRAE/IESNA 90.1.(duct liners not allowed)3. Factory-insulated flexible ducts.4. Factory-insulated plenums and casings.5. Flexible connectors.6. Vibration-control devices.7. Factory-insulated access panels and doors.8. Return air ducts except 5 feet from where preconditioned outside air connects to

the return duct to the unit.9. Exhaust ducts

3.12 INDOOR DUCT AND PLENUM INSULATION SCHEDULE

A. Concealed, supply-air duct insulation shall be the following:1. Mineral-Fiber Blanket: 2 inches thick and 0.75-lb/cu. ft. nominal density.

B. Concealed, return return-air duct insulation 5’ upstream of where the outside air duct connects and to the unit shall be the following:1. Mineral-Fiber Blanket: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.

C. Concealed, outdoor-air duct insulation shall be the following:1. Mineral-Fiber Blanket: 2 inches thick and 0.75-lb/cu. ft. nominal density.

D. Concealed, exhaust-air or relief air duct insulation between isolation damper and penetration of building exterior shall be one of the following:1. Mineral-Fiber Blanket: 2 inches thick and 0.75-lb/cu. ft. nominal density.

E. Exposed, supply-air duct insulation shall be the following:1. Mineral-Fiber Board: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.

F. Exposed, return-air duct insulation 5’ upstream of where the outside air duct connects and to the unit shall be one of the following:1. Mineral-Fiber Board: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.

G. Exposed, outdoor-air duct insulation shall be the following:1. Mineral-Fiber Board: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.

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END OF SECTION 230713

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SECTION 23 07 19HVAC PIPING INSULATION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes insulating the following HVAC piping systems:

1. Chilled-water piping.2. Condensate drain piping, indoors.3. Heating hot-water piping, indoors and outdoors.4. Refrigerant suction and hot-gas piping, indoors and outdoors.

B. Related Sections:

1. Division 23 Section "HVAC Equipment Insulation."2. Division 23 Section "Duct Insulation."

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated. Include thermal conductivity, water-vapor permeance thickness, and jackets (both factory and field applied if any).

1.4 INFORMATIONAL SUBMITTALS

A. Field quality-control reports.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship program or another craft training program certified by the Department of Labor, Bureau of Apprenticeship and Training.

B. Surface-Burning Characteristics: For insulation and related materials, as determined by testing identical products according to ASTM E 84, by a testing and inspecting agency acceptable to authorities having jurisdiction. Factory label insulation and jacket

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materials and adhesive, mastic, tapes, and cement material containers, with appropriate markings of applicable testing agency.

1. Insulation Installed Indoors: Flame-spread index of 25 or less, and smoke-developed index of 50 or less.

2. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smoke-developed index of 150 or less.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Packaging: Insulation material containers shall be marked by manufacturer with appropriate ASTM standard designation, type and grade, and maximum use temperature.

1.7 COORDINATION

A. Coordinate sizes and locations of supports, hangers, and insulation shields specified in Division 23 Section "Hangers and Supports for HVAC Piping and Equipment."

B. Coordinate clearance requirements with piping Installer for piping insulation application. Before preparing piping Shop Drawings, establish and maintain clearance requirements for installation of insulation and field-applied jackets and finishes and for space required for maintenance.

C. Coordinate installation and testing of heat tracing.

1.8 SCHEDULING

A. Schedule insulation application after pressure testing systems and, where required, after installing and testing heat tracing. Insulation application may begin on segments that have satisfactory test results.

B. Complete installation and concealment of plastic materials as rapidly as possible in each area of construction.

PART 2 - PRODUCTS

2.1 INSULATION MATERIALS

A. Comply with requirements in "Piping Insulation Schedule, General," "Indoor Piping Insulation Schedule," and "Outdoor, Aboveground Piping Insulation Schedule" articles for where insulating materials shall be applied.

B. Products shall not contain asbestos, lead, mercury, or mercury compounds.

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C. Products that come in contact with stainless steel shall have a leachable chloride content of less than 50 ppm when tested according to ASTM C 871.

D. Insulation materials for use on austenitic stainless steel shall be qualified as acceptable according to ASTM C 795.

E. Foam insulation materials shall not use CFC or HCFC blowing agents in the manufacturing process.

F. Cellular Glass: Inorganic, incombustible, foamed or cellulated glass with annealed, rigid, hermetically sealed cells. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

1. Products: Subject to compliance with requirements, provide the following :

a. Pittsburgh Corning Corporation; Foamglas.

2. Block Insulation: ASTM C 552, Type I.3. Special-Shaped Insulation: ASTM C 552, Type III.4. Board Insulation: ASTM C 552, Type IV.5. Preformed Pipe Insulation with Factory-Applied ASJ-SSL: Comply with

ASTM C 552, Type II, Class 2.6. Factory fabricate shapes according to ASTM C 450 and ASTM C 585.

G. Flexible Elastomeric Insulation: Closed-cell, sponge- or expanded-rubber materials. Comply with ASTM C 534, Type I for tubular materials.

1. Products: Subject to compliance with requirements, provide the following :

a. Aeroflex USA, Inc.; Aerocel.b. Armacell LLC; AP Armaflex.c. K-Flex USA; Insul-Lock, Insul-Tube, and K-FLEX LS.

H. Mineral-Fiber, Pipe and Tank Insulation: Mineral or glass fibers bonded with a thermosetting resin. Semirigid board material with factory-applied ASJ complying with ASTM C 1393, Type II or Type IIIA Category 2, or with properties similar to ASTM C 612, Type IB. Nominal density is 2.5 lb/cu. ft. or more. Thermal conductivity (k-value) at 100 deg F is 0.29 Btu x in./h x sq. ft. x deg F or less. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article.

1. Products: Subject to compliance with requirements, provide the following:

a. CertainTeed Corp.; CrimpWrap.b. Johns Manville; MicroFlex.c. Knauf Insulation; Pipe and Tank Insulation.d. Owens Corning; Fiberglas Pipe and Tank Insulation.

2.2 INSULATING CEMENTS

A. Mineral-Fiber Insulating Cement: Comply with ASTM C 195.

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1. Products: Subject to compliance with requirements, provide the following :

a. Ramco Insulation, Inc.; Super-Stik.b. .

B. Mineral-Fiber, Hydraulic-Setting Insulating and Finishing Cement: Comply with ASTM C 449.

1. Products: Subject to compliance with requirements, provide the following :

a. Ramco Insulation, Inc.; Ramcote 1200 and Quik-Cote.b. .

2.3 ADHESIVES

A. Materials shall be compatible with insulation materials, jackets, and substrates and for bonding insulation to itself and to surfaces to be insulated unless otherwise indicated.

B. Cellular-Glass Adhesive: Two-component, thermosetting urethane adhesive containing no flammable solvents, with a service temperature range of minus 100 to plus 200 deg F.

1. Products: Subject to compliance with requirements, provide the following :

a. Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; 81-84.

b. .

2. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

C. Flexible Elastomeric Adhesive: Comply with MIL-A-24179A, Type II, Class I.

1. Products: Subject to compliance with requirements, provide the following :

a. Aeroflex USA, Inc.; Aeroseal.b. Armacell LLC; Armaflex 520 Adhesive.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 85-75.d. K-Flex USA; R-373 Contact Adhesive.

2. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile

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Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

D. Mineral-Fiber Adhesive: Comply with MIL-A-3316C, Class 2, Grade A.

1. Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-127.

b. Eagle Bridges - Marathon Industries; 225.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 85-60/85-70.d. Mon-Eco Industries, Inc.; 22-25.

2. For indoor applications, adhesive shall have a VOC content of 80 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

E. ASJ Adhesive: Comply with MIL-A-3316C, Class 2, Grade A for bonding insulation jacket lap seams and joints.

1. Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-82.

b. Eagle Bridges - Marathon Industries; 225.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 85-50.d. Mon-Eco Industries, Inc.; 22-25.

2. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

F. PVC Jacket Adhesive: Compatible with PVC jacket.

1. Products: Subject to compliance with requirements, provide the following :

a. Dow Corning Corporation; 739, Dow Silicone.b. Johns Manville; Zeston Perma-Weld, CEEL-TITE Solvent Welding

Adhesive.c. P.I.C. Plastics, Inc.; Welding Adhesive.d. Speedline Corporation; Polyco VP Adhesive.

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2. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

3. Adhesive shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

2.4 MASTICS

A. Materials shall be compatible with insulation materials, jackets, and substrates; comply with MIL-PRF-19565C, Type II.

1. For indoor applications, use mastics that have a VOC content of 50 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA Method 24).

B. Vapor-Barrier Mastic: Water based; suitable for indoor use on below-ambient services.

1. Products: Subject to compliance with requirements, provide the following :

a. Foster Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; 30-80/30-90.

b. Vimasco Corporation; 749..

2. Water-Vapor Permeance: ASTM E 96/E 96M, Procedure B, 0.013 perm at 43-mil dry film thickness.

3. Service Temperature Range: Minus 20 to plus 180 deg F.4. Solids Content: ASTM D 1644, 58 percent by volume and 70 percent by weight.5. Color: White.

C. Vapor-Barrier Mastic: Solvent based; suitable for outdoor use on below-ambient services.

1. Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; Encacel.

b. Eagle Bridges - Marathon Industries; 570.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 60-95/60-96.

2. Water-Vapor Permeance: ASTM F 1249, 0.05 perm at 30-mil dry film thickness.3. Service Temperature Range: Minus 50 to plus 220 deg F.4. Solids Content: ASTM D 1644, 33 percent by volume and 46 percent by weight.5. Color: White.

D. Breather Mastic: Water based; suitable for indoor and outdoor use on above-ambient services.

1. Products: Subject to compliance with requirements, provide the following :

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a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-10.

b. Eagle Bridges - Marathon Industries; 550.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 46-50.

2. Water-Vapor Permeance: ASTM F 1249, 1.8 perms at 0.0625-inch dry film thickness.

3. Service Temperature Range: Minus 20 to plus 180 deg F.4. Solids Content: 60 percent by volume and 66 percent by weight.5. Color: White.

2.5 SEALANTS

A. Joint Sealants:

1. Joint Sealants for Cellular-Glass Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-76.

b. Eagle Bridges - Marathon Industries; 405.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 30-45.

2. Materials shall be compatible with insulation materials, jackets, and substrates.3. Permanently flexible, elastomeric sealant.4. Service Temperature Range: Minus 100 to plus 300 deg F.5. Color: White or gray.6. For indoor applications, sealants shall have a VOC content of 420 g/L or less

when calculated according to 40 CFR 59, Subpart D (EPA Method 24).7. Sealants shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

B. Metal Jacket Flashing Sealants:

1. Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-76.

b. Eagle Bridges - Marathon Industries; 405.c. Foster Brand, Specialty Construction Brands, Inc., a business of H. B.

Fuller Company; 95-44.

2. Materials shall be compatible with insulation materials, jackets, and substrates.3. Fire- and water-resistant, flexible, elastomeric sealant.4. Service Temperature Range: Minus 40 to plus 250 deg F.

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5. Color: Aluminum.6. For indoor applications, sealants shall have a VOC content of 420 g/L or less

when calculated according to 40 CFR 59, Subpart D (EPA Method 24).7. Sealants shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

C. ASJ Flashing Sealants and PVC Jacket Flashing Sealants:

1. Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; CP-76.

2. Materials shall be compatible with insulation materials, jackets, and substrates.3. Fire- and water-resistant, flexible, elastomeric sealant.4. Service Temperature Range: Minus 40 to plus 250 deg F.5. Color: White.6. For indoor applications, sealants shall have a VOC content of 420 g/L or less

when calculated according to 40 CFR 59, Subpart D (EPA Method 24).7. Sealants shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers."

2.6 FACTORY-APPLIED JACKETS

A. Insulation system schedules indicate factory-applied jackets on various applications. When factory-applied jackets are indicated, comply with the following:1. ASJ-SSL: ASJ with self-sealing, pressure-sensitive, acrylic-based adhesive

covered by a removable protective strip; complying with ASTM C 1136, Type I.

2.7 FIELD-APPLIED JACKETS

A. Field-applied jackets shall comply with ASTM C 921, Type I, unless otherwise indicated.

B. PVC Jacket: High-impact-resistant, UV-resistant PVC complying with ASTM D 1784, Class 16354-C; thickness as scheduled; roll stock ready for shop or field cutting and forming. Thickness is indicated in field-applied jacket schedules.

1. Products: Subject to compliance with requirements, provide the following :

a. Johns Manville; Zeston.b. P.I.C. Plastics, Inc.; FG Series.c. Proto Corporation; LoSmoke.

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2. Adhesive: As recommended by jacket material manufacturer.3. Color: White .4. Factory-fabricated fitting covers to match jacket if available; otherwise, field

fabricate.

a. Shapes: 45- and 90-degree, short- and long-radius elbows, tees, valves, flanges, unions, reducers, end caps, traps, and mechanical joints.

C. Metal Jacket:

1. Products: Subject to compliance with requirements, provide the following :

a. Childers Brand, Specialty Construction Brands, Inc., a business of H. B. Fuller Company; Metal Jacketing Systems.

b. ITW Insulation Systems; Aluminum and Stainless Steel Jacketing.c. RPR Products, Inc.; Insul-Mate..

2. Aluminum Jacket: Comply with ASTM B 209, Alloy 3003, 3005, 3105, or 5005, Temper H-14.

a. Factory cut and rolled to size.b. Finish and thickness are indicated in field-applied jacket schedules.c. Moisture Barrier for Outdoor Applications: 3-mil- thick, heat-bonded

polyethylene and kraft paper.d. Factory-Fabricated Fitting Covers:

1) Same material, finish, and thickness as jacket.2) Preformed 2-piece or gore, 45- and 90-degree, short- and long-radius

elbows.3) Tee covers.4) Flange and union covers.5) End caps.6) Beveled collars.7) Valve covers.8) Field fabricate fitting covers only if factory-fabricated fitting covers are

not available.

D. Self-Adhesive Outdoor Jacket: 60-mil- thick, laminated vapor barrier and waterproofing membrane for installation over insulation located aboveground outdoors; consisting of a rubberized bituminous resin on a crosslaminated polyethylene film covered with stucco-embossed aluminum-foil facing.

1. Products: Subject to compliance with requirements, provide the following :

a. Polyguard Products, Inc.; Alumaguard 60.b. .

2.8 SECUREMENTS

A. Bands:

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1. Products: Subject to compliance with requirements, provide the following :

a. ITW Insulation Systems; Gerrard Strapping and Seals.b. RPR Products, Inc.; Insul-Mate Strapping, Seals, and Springs..

2. Aluminum: ASTM B 209, Alloy 3003, 3005, 3105, or 5005; Temper H-14, 0.020 inch thick, 3/4 inch wide with wing seal .

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions for compliance with requirements for installation tolerances and other conditions affecting performance of insulation application.

1. Verify that systems to be insulated have been tested and are free of defects.2. Verify that surfaces to be insulated are clean and dry.3. Proceed with installation only after unsatisfactory conditions have been

corrected.

3.2 PREPARATION

A. Surface Preparation: Clean and dry surfaces to receive insulation. Remove materials that will adversely affect insulation application.

B. Surface Preparation: Clean and prepare surfaces to be insulated. Before insulating, apply a corrosion coating to insulated surfaces as follows:1. Carbon Steel: Coat carbon steel operating at a service temperature between 32

and 300 deg F with an epoxy coating. Consult coating manufacturer for appropriate coating materials and application methods for operating temperature range.

C. Coordinate insulation installation with the trade installing heat tracing. Comply with requirements for heat tracing that apply to insulation.

D. Mix insulating cements with clean potable water; if insulating cements are to be in contact with stainless-steel surfaces, use demineralized water.

3.3 GENERAL INSTALLATION REQUIREMENTS

A. Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces; free of voids throughout the length of piping including fittings, valves, and specialties.

B. Install insulation materials, forms, vapor barriers or retarders, jackets, and thicknesses required for each item of pipe system as specified in insulation system schedules.

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C. Install accessories compatible with insulation materials and suitable for the service. Install accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or dry state.

D. Install insulation with longitudinal seams at top and bottom of horizontal runs.

E. Install multiple layers of insulation with longitudinal and end seams staggered.

F. Do not weld brackets, clips, or other attachment devices to piping, fittings, and specialties.

G. Keep insulation materials dry during application and finishing.

H. Install insulation with tight longitudinal seams and end joints. Bond seams and joints with adhesive recommended by insulation material manufacturer.

I. Install insulation with least number of joints practical.

J. Where vapor barrier is indicated, seal joints, seams, and penetrations in insulation at hangers, supports, anchors, and other projections with vapor-barrier mastic.

1. Install insulation continuously through hangers and around anchor attachments.2. For insulation application where vapor barriers are indicated, extend insulation on

anchor legs from point of attachment to supported item to point of attachment to structure. Taper and seal ends at attachment to structure with vapor-barrier mastic.

3. Install insert materials and install insulation to tightly join the insert. Seal insulation to insulation inserts with adhesive or sealing compound recommended by insulation material manufacturer.

4. Cover inserts with jacket material matching adjacent pipe insulation. Install shields over jacket, arranged to protect jacket from tear or puncture by hanger, support, and shield.

K. Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet and dry film thicknesses.

L. Install insulation with factory-applied jackets as follows:

1. Draw jacket tight and smooth.2. Cover circumferential joints with 3-inch- wide strips, of same material as

insulation jacket. Secure strips with adhesive and outward clinching staples along both edges of strip, spaced 4 inches o.c.

3. Overlap jacket longitudinal seams at least 1-1/2 inches. Install insulation with longitudinal seams at bottom of pipe. Clean and dry surface to receive self-sealing lap.

4. Cover joints and seams with tape, according to insulation material manufacturer's written instructions, to maintain vapor seal.

5. Where vapor barriers are indicated, apply vapor-barrier mastic on seams and joints and at ends adjacent to pipe flanges and fittings.

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M. Cut insulation in a manner to avoid compressing insulation more than 75 percent of its nominal thickness.

N. Finish installation with systems at operating conditions. Repair joint separations and cracking due to thermal movement.

O. Repair damaged insulation facings by applying same facing material over damaged areas. Extend patches at least 4 inches beyond damaged areas. Adhere, staple, and seal patches similar to butt joints.

P. For above-ambient services, do not install insulation to the following:

1. Vibration-control devices.2. Testing agency labels and stamps.3. Nameplates and data plates.4. Manholes.5. Handholes.6. Cleanouts.

3.4 PENETRATIONS

A. Insulation Installation at Roof Penetrations: Install insulation continuously through roof penetrations.

1. Seal penetrations with flashing sealant.2. For applications requiring only indoor insulation, terminate insulation above roof

surface and seal with joint sealant. For applications requiring indoor and outdoor insulation, install insulation for outdoor applications tightly joined to indoor insulation ends. Seal joint with joint sealant.

3. Extend jacket of outdoor insulation outside roof flashing at least 2 inches below top of roof flashing.

4. Seal jacket to roof flashing with flashing sealant.

B. Insulation Installation at Underground Exterior Wall Penetrations: Terminate insulation flush with sleeve seal. Seal terminations with flashing sealant.

C. Insulation Installation at Aboveground Exterior Wall Penetrations: Install insulation continuously through wall penetrations.

1. Seal penetrations with flashing sealant.2. For applications requiring only indoor insulation, terminate insulation inside wall

surface and seal with joint sealant. For applications requiring indoor and outdoor insulation, install insulation for outdoor applications tightly joined to indoor insulation ends. Seal joint with joint sealant.

3. Extend jacket of outdoor insulation outside wall flashing and overlap wall flashing at least 2 inches.

4. Seal jacket to wall flashing with flashing sealant.

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D. Insulation Installation at Interior Wall and Partition Penetrations (That Are Not Fire Rated): Install insulation continuously through walls and partitions.

E. Insulation Installation at Fire-Rated Wall and Partition Penetrations: Install insulation continuously through penetrations of fire-rated walls and partitions.

1. Comply with requirements in Division 07 Section "Penetration Firestopping" for firestopping and fire-resistive joint sealers.

F. Insulation Installation at Floor Penetrations:

1. Pipe: Install insulation continuously through floor penetrations.2. Seal penetrations through fire-rated assemblies. Comply with requirements in

Division 07 Section "Penetration Firestopping."

3.5 GENERAL PIPE INSULATION INSTALLATION

A. Requirements in this article generally apply to all insulation materials except where more specific requirements are specified in various pipe insulation material installation articles.

B. Insulation Installation on Fittings, Valves, Strainers, Flanges, and Unions:

1. Install insulation over fittings, valves, strainers, flanges, unions, and other specialties with continuous thermal and vapor-retarder integrity unless otherwise indicated.

2. Insulate pipe elbows using preformed fitting insulation or mitered fittings made from same material and density as adjacent pipe insulation. Each piece shall be butted tightly against adjoining piece and bonded with adhesive. Fill joints, seams, voids, and irregular surfaces with insulating cement finished to a smooth, hard, and uniform contour that is uniform with adjoining pipe insulation.

3. Insulate tee fittings with preformed fitting insulation or sectional pipe insulation of same material and thickness as used for adjacent pipe. Cut sectional pipe insulation to fit. Butt each section closely to the next and hold in place with tie wire. Bond pieces with adhesive.

4. Insulate valves using preformed fitting insulation or sectional pipe insulation of same material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe insulation by not less than two times the thickness of pipe insulation, or one pipe diameter, whichever is thicker. For valves, insulate up to and including the bonnets, valve stuffing-box studs, bolts, and nuts. Fill joints, seams, and irregular surfaces with insulating cement.

5. Insulate strainers using preformed fitting insulation or sectional pipe insulation of same material, density, and thickness as used for adjacent pipe. Overlap adjoining pipe insulation by not less than two times the thickness of pipe insulation, or one pipe diameter, whichever is thicker. Fill joints, seams, and irregular surfaces with insulating cement. Insulate strainers so strainer basket flange or plug can be easily removed and replaced without damaging the insulation and jacket. Provide a removable reusable insulation cover. For below-ambient services, provide a design that maintains vapor barrier.

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6. Insulate flanges and unions using a section of oversized preformed pipe insulation. Overlap adjoining pipe insulation by not less than two times the thickness of pipe insulation, or one pipe diameter, whichever is thicker.

7. Cover segmented insulated surfaces with a layer of finishing cement and coat with a mastic. Install vapor-barrier mastic for below-ambient services and a breather mastic for above-ambient services. Reinforce the mastic with fabric-reinforcing mesh. Trowel the mastic to a smooth and well-shaped contour.

8. For services not specified to receive a field-applied jacket except for flexible, install fitted PVC cover over elbows, tees, strainers, valves, flanges, and unions. Terminate ends with PVC end caps. Tape PVC covers to adjoining insulation facing using PVC tape.

9. Stencil or label the outside insulation jacket of each union with the word "union." Match size and color of pipe labels.

C. Insulate instrument connections for thermometers, pressure gages, pressure temperature taps, test connections, flow meters, sensors, switches, and transmitters on insulated pipes. Shape insulation at these connections by tapering it to and around the connection with insulating cement and finish with finishing cement, mastic, and flashing sealant.

D. Install removable insulation covers at locations indicated. Installation shall conform to the following:

1. Make removable flange and union insulation from sectional pipe insulation of same thickness as that on adjoining pipe. Install same insulation jacket as adjoining pipe insulation.

2. When flange and union covers are made from sectional pipe insulation, extend insulation from flanges or union long at least two times the insulation thickness over adjacent pipe insulation on each side of flange or union. Secure flange cover in place with stainless-steel or aluminum bands. Select band material compatible with insulation and jacket.

3. Construct removable valve insulation covers in same manner as for flanges, except divide the two-part section on the vertical center line of valve body.

4. When covers are made from block insulation, make two halves, each consisting of mitered blocks wired to stainless-steel fabric. Secure this wire frame, with its attached insulation, to flanges with tie wire. Extend insulation at least 2 inches over adjacent pipe insulation on each side of valve. Fill space between flange or union cover and pipe insulation with insulating cement. Finish cover assembly with insulating cement applied in two coats. After first coat is dry, apply and trowel second coat to a smooth finish.

5. Unless a PVC jacket is indicated in field-applied jacket schedules, finish exposed surfaces with a metal jacket.

3.6 INSTALLATION OF CELLULAR-GLASS INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Secure each layer of insulation to pipe with wire or bands and tighten bands without deforming insulation materials.

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2. Where vapor barriers are indicated, seal longitudinal seams, end joints, and protrusions with vapor-barrier mastic and joint sealant.

3. For insulation with factory-applied jackets, do not staple longitudinal tabs. Instead, secure tabs with additional adhesive as recommended by insulation material manufacturer and seal with vapor-barrier mastic and flashing sealant.

B. Insulation Installation on Pipe Flanges:

1. Install preformed pipe insulation to outer diameter of pipe flange.2. Make width of insulation section same as overall width of flange and bolts, plus

twice the thickness of pipe insulation.3. Install jacket material with manufacturer's recommended adhesive, overlap

seams at least 1 inch, and seal joints with flashing sealant.

C. Insulation Installation on Pipe Fittings and Elbows:

1. Install preformed sections of same material as straight segments of pipe insulation when available. Secure according to manufacturer's written instructions.

2. When preformed sections of insulation are not available, install mitered sections of cellular-glass insulation. Secure insulation materials with wire or bands.

D. Insulation Installation on Valves and Pipe Specialties:

1. Install preformed sections of cellular-glass insulation to valve body.2. Arrange insulation to permit access to packing and to allow valve operation

without disturbing insulation.3. Install insulation to flanges as specified for flange insulation application.

3.7 INSTALLATION OF FLEXIBLE ELASTOMERIC INSULATION

A. Seal longitudinal seams and end joints with manufacturer's recommended adhesive to eliminate openings in insulation that allow passage of air to surface being insulated.

B. Insulation Installation on Pipe Flanges:

1. Install pipe insulation to outer diameter of pipe flange.2. Make width of insulation section same as overall width of flange and bolts, plus

twice the thickness of pipe insulation.3. Fill voids between inner circumference of flange insulation and outer

circumference of adjacent straight pipe segments with cut sections of sheet insulation of same thickness as pipe insulation.

4. Secure insulation to flanges and seal seams with manufacturer's recommended adhesive to eliminate openings in insulation that allow passage of air to surface being insulated.

C. Insulation Installation on Pipe Fittings and Elbows:

1. Install mitered sections of pipe insulation.

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2. Secure insulation materials and seal seams with manufacturer's recommended adhesive to eliminate openings in insulation that allow passage of air to surface being insulated.

D. Insulation Installation on Valves and Pipe Specialties:

1. Install preformed valve covers manufactured of same material as pipe insulation when available.

2. When preformed valve covers are not available, install cut sections of pipe and sheet insulation to valve body. Arrange insulation to permit access to packing and to allow valve operation without disturbing insulation.

3. Install insulation to flanges as specified for flange insulation application.4. Secure insulation to valves and specialties and seal seams with manufacturer's

recommended adhesive to eliminate openings in insulation that allow passage of air to surface being insulated.

3.8 INSTALLATION OF MINERAL-FIBER INSULATION

A. Insulation Installation on Straight Pipes and Tubes:

1. Secure each layer of preformed pipe insulation to pipe with wire or bands and tighten bands without deforming insulation materials.

2. Where vapor barriers are indicated, seal longitudinal seams, end joints, and protrusions with vapor-barrier mastic and joint sealant.

3. For insulation with factory-applied jackets on above-ambient surfaces, secure laps with outward-clinched staples at 6 inches o.c.

4. For insulation with factory-applied jackets on below-ambient surfaces, do not staple longitudinal tabs. Instead, secure tabs with additional adhesive as recommended by insulation material manufacturer and seal with vapor-barrier mastic and flashing sealant.

B. Insulation Installation on Pipe Flanges:

1. Install preformed pipe insulation to outer diameter of pipe flange.2. Make width of insulation section same as overall width of flange and bolts, plus

twice the thickness of pipe insulation.3. Fill voids between inner circumference of flange insulation and outer

circumference of adjacent straight pipe segments with mineral-fiber blanket insulation.

4. Install jacket material with manufacturer's recommended adhesive, overlap seams at least 1 inch, and seal joints with flashing sealant.

C. Insulation Installation on Pipe Fittings and Elbows:

1. Install preformed sections of same material as straight segments of pipe insulation when available.

2. When preformed insulation elbows and fittings are not available, install mitered sections of pipe insulation, to a thickness equal to adjoining pipe insulation. Secure insulation materials with wire or bands.

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D. Insulation Installation on Valves and Pipe Specialties:

1. Install preformed sections of same material as straight segments of pipe insulation when available.

2. When preformed sections are not available, install mitered sections of pipe insulation to valve body.

3. Arrange insulation to permit access to packing and to allow valve operation without disturbing insulation.

4. Install insulation to flanges as specified for flange insulation application.

3.9 FIELD-APPLIED JACKET INSTALLATION

A. Where glass-cloth jackets are indicated, install directly over bare insulation or insulation with factory-applied jackets.

1. Draw jacket smooth and tight to surface with 2-inch overlap at seams and joints.2. Embed glass cloth between two 0.062-inch- thick coats of lagging adhesive.3. Completely encapsulate insulation with coating, leaving no exposed insulation..

B. Where PVC jackets are indicated, install with 1-inch overlap at longitudinal seams and end joints; for horizontal applications. Seal with manufacturer's recommended adhesive.

1. Apply two continuous beads of adhesive to seams and joints, one bead under lap and the finish bead along seam and joint edge.

C. Where metal jackets are indicated, install with 2-inch overlap at longitudinal seams and end joints. Overlap longitudinal seams arranged to shed water. Seal end joints with weatherproof sealant recommended by insulation manufacturer. Secure jacket with stainless-steel bands 12 inches o.c. and at end joints.

3.10 FINISHES

A. Pipe Insulation with ASJ, Glass-Cloth, or Other Paintable Jacket Material: Paint jacket with paint system identified below and as specified in Division 09 painting Sections.

1. Flat Acrylic Finish: Two finish coats over a primer that is compatible with jacket material and finish coat paint. Add fungicidal agent to render fabric mildew proof.

a. Finish Coat Material: Interior, flat, latex-emulsion size.

B. Flexible Elastomeric Thermal Insulation: After adhesive has fully cured, apply two coats of insulation manufacturer's recommended protective coating.

C. Color: Final color as selected by Architect. Vary first and second coats to allow visual inspection of the completed Work.

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D. Do not field paint aluminum jackets.

3.11 PIPING INSULATION SCHEDULE, GENERAL

A. Acceptable preformed pipe and tubular insulation materials and thicknesses are identified for each piping system and pipe size range. If more than one material is listed for a piping system, selection from materials listed is Contractor's option.

B. Items Not Insulated: Unless otherwise indicated, do not install insulation on the following:

1. Drainage piping located in crawl spaces.2. Underground piping.3. Chrome-plated pipes and fittings unless there is a potential for personnel injury.

3.12 INDOOR PIPING INSULATION SCHEDULE

A. Condensate and Equipment Drain Water below 60 Deg F:

1. All Pipe Sizes: Insulation shall be one of the following:a. Flexible Elastomeric: 3/4 inch thick.

B. Chilled Water 1. NPS 6 and Smaller: Insulation shall be the following:

a. Cellular Glass: 2 inches thick

C. Heating-Hot-Water Supply and Return, 200 Deg F and Below:

1. NPS 1 and Smaller:

a. Mineral-Fiber, Preformed Pipe, Type I: 1 inch thick

b. Cellular Glass – 1 inch thick

2. NPS 1 to NPS 12: Insulation shall be the following:a. Mineral-Fiber, Preformed Pipe, Type I: 1-1/2 inch thick.b. Cellular Glass 1 ½ inch thick.

3. Refrigerant Suction and Hot-gas piping:a. 1” thick for all pipe sizes.

3.13 OUTDOOR, ABOVEGROUND PIPING INSULATION SCHEDULE

A. Heating-Hot-Water Supply and Return, 200 Deg F and Below:

1. All Pipe Sizes: Insulation shall be the following:

a. Cellular Glass: 3 inches thick.

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B. Refrigerant Suction and Hot-Gas Piping:

1. All Pipe Sizes: Insulation shall be the following:a. Flexible Elastomeric: 2 inches thick.

C. Chilled Water: all pipe sizes 3” thick.

3.14 INDOOR, FIELD-APPLIED JACKET SCHEDULE

A. Install jacket over insulation material. For insulation with factory-applied jacket, install the field-applied jacket over the factory-applied jacket.

B. If more than one material is listed, selection from materials listed is Contractor's option.

C. Piping, Concealed:

1. None.

D. Piping, Exposed 1. PVC : 20 mils thick.

3.15 OUTDOOR, FIELD-APPLIED JACKET SCHEDULE

A. Install jacket over insulation material. For insulation with factory-applied jacket, install the field-applied jacket over the factory-applied jacket.

B. If more than one material is listed, selection from materials listed is Contractor's option.

C. Piping, Concealed:

1. None.

D. Piping, Exposed:1. Aluminum, Smooth.

END OF SECTION 230719

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SECTION 230800 COMMISSIONING OF HVAC

PART 1 - GENERAL

1.1 SUMMARY

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section.

B. It is of primary concern that all systems and assemblies in the project perform in accordance with the design intent and the Owner's operational needs. The process of assuring that such performance is achieved is referred to as "commissioning."

C. The Commissioning Team will include representatives of the Owner, Design A/E, General Contractor and Installing Subcontractors, Test and Balance Subcontractor, BAS Subcontractor and Commissioning Authority (CxA).

D. Commissioning is a comprehensive and systematic process of verifying that the building systems perform interactively in accordance with the BOD, according to the construction documents and the OPR.

1. The commissioning process shall encompass and coordinate the equipment and system documentation, equipment start up, field testing, control system calibration, testing and balancing, functional performance testing and training. Commissioning requires cooperation and direct involvement by all parties throughout the construction process.

2. In addition to fulfilling scheduling and planning requirements, the Contractor is further responsible for documenting the equipment and system installation and operational verification for all systems and assemblies.

E. Commissioning Process Overview: The following narrative provides a brief overview of the typical commissioning tasks during construction and the general order in which they occur.

1. The commissioning process does not take away from or reduce the responsibility of the Contractor to provide a finished and fully functioning and performing product.

2. The Commissioning Authority (CxA), is not responsible for construction means and methods, job safety, or management function related to commissioning on the jobsite.

3. Commissioning begins with the selection of the Commissioning authority for the project and the development of the OPR document.

4. Commissioning Plan: The commissioning plan provides guidance in the execution of the commissioning process. The Commissioning Authority will prepare and update the plan. The Specifications will facilitate the execution of the Commissioning Plan

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5. Commissioning during construction begins with a planning meeting followed by a kick-off meeting conducted by the Commissioning Authority where the commissioning process is reviewed with the commissioning team members.

6. Equipment and assembly documentation is submitted to the Commissioning Authority during normal submittals, including detailed start-up procedures and early copies of Operation and Maintenance (O&M) data.

7. The Contractor develops start-up plans for selected equipment with review by the Commissioning Authority. The Commissioning Authority and/or Contractor develop Pre-Functional Checklists (PFCs) to be completed by the Contractor during the installation and start-up processes.

8. In general, the checkout and performance verification proceeds from simple to complex; from component level to equipment to systems and intersystem levels with construction checklists being completed before testing.

9. The Contractor executes and documents the PFCs and perform start-up and initial checkout. The Commissioning Authority documents that the checklists, installation and start-up were completed through spot witnessing and reviewing Contractor's completed PFCs and startup reports.

10. The Commissioning Authority performs periodic construction observations.

11. The Commissioning Authority develop specific written equipment, system and assembly Functional Performance Test (FPT’s) procedures for all commissioned equipment.

12. The test procedures are executed by the Contractor, under the direction of, and documented by the Commissioning Authority for most equipment.

13. The CxA prepares the Preliminary Cx Report and provides this document to the Owner. The Owner sends the code official a letter of transmittal acknowledging that the building owner has received the Preliminary Commissioning Report.

14. Only after the Preliminary Cx Report is received by the Owner can the final mechanical inspection be scheduled with the Building Official / AHJ.

15. Items of non-compliance in material, installation or setup are documented by the Commissioning Authority and corrected by the Contractor.

16. Cx is completed and all deficiencies corrected prior to Substantial Completion.

17. The final Cx Report shall submitted by the CxA to the Owner within 90 days of the receipt of certificate of occupancy.

18. The Commissioning Authority reviews the O&M manuals for clarity, accessibility and completeness.

19. The Commissioning Authority reviews, and coordinates the training provided by the Contractor with the Owner and Contractor and verifies that is was completed.

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20. Commissioning is completed before Substantial Completion, except for trend log monitoring, seasonal testing, and near-warranty end activities.

21. Seasonal or deferred testing and near-warranty-end activities are conducted, as specified

1.2 Scope of Commissioning

A. All HVAC systems, air handling units, terminal units, make-up air units, fan coil units, exhaust fans, computer room units, unit heaters, heat pumps, and associate equipment.

B. All building automation system controls, associated control terminal devices, and related controls and sensors, controls and components, energy recovery devices and systems and controls.

C. All building automation system controls, associated control terminal devices, and related controls and sensors, controls and components, energy recovery devices and systems and controls.

D. All other HVAC and mechanical system components indicated on the drawings and / or in the commissioning plan

1.3 DEFINITONS

A. Approval: Acceptance that a piece of equipment, system or issue related to it complies with the Contract Documents.

B. Basis of Design (BOD): Documentation of the primary assumptions and rationale behind design decisions that are made to meet the Owner’s intent and project requirements. The BOD describes the assumptions used for sizing and selecting systems and components; site and environmental conditions or constraints; and other factors that led to decisions (e.g., codes, standards, operating conditions, functional goals, interior environmental criteria).

C. Building Automation System (BAS): The central building energy management control system.

D. Commissioning (Cx): Commissioning is a systematic process of ensuring that all building systems and assemblies perform interactively according to the Owner’s objectives and requirements. This is achieved by beginning in the design phase and documenting the Owner’s Project Requirements, Basis of Design (BOD) and continuing through construction, acceptance and the warranty period with actual verification of function and performance.

E. Commissioning Authority aka Commissioning Provider (CxA): The professional commissioning consultant, not otherwise associated with the A/E team members, Contractor. The Commissioning Authority directs and coordinates the day-to-day commissioning activities in concert with the Contractor.

F. Commissioning Plan (CxP): The project-specific document prepared by the CxA that describes all aspects of the commissioning process including roles & responsibilities, documentation requirements, and communication structures.

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G. .

H. Datalogging: Monitoring flows, currents, status, pressures, etc., of equipment using stand-alone dataloggers separate from the control system.

I. Deferred Tests: tests that are performed later, after substantial completion, due to partial occupancy, equipment, seasonal requirements, design or other site conditions that disallow the test from being performed.

J. Deficiency: A condition in the installation or function of a component, piece of equipment or system that is not in compliance with the Contract Documents (that is, does not perform properly or is not complying with the Owner’s objectives).

K. Functional Performance Test (FPT): The written procedures and documentation forms of tests used to guide and record testing. FTPs are composed of repeatable, step-by-step procedures and include the test prerequisites, the test process, the expected outcomes and acceptance criteria. Contractor: Refers to the Contractor, Construction Manager, Builder, and all sub-Contractor and/or authorized representatives

L. Issues Log: Ongoing record of the issues identified during the commissioning process that require or did not require correction. For each entry the log includes a unique identification number and a short description of the issue. The Commissioning Authority is responsible to maintain the log.

M. Monitoring: The recording of parameters (flow, current, status, pressure, etc.) of equipment operation using dataloggers or the trending capabilities of control systems.

N. Owner Project Requirements (OPR): Documentation of the functional requirements of the facility and the expectations of how it will be used and operated. This includes Project and design goals, measurable performance criteria, budgets and schedules and supporting information.

O. Performance Metrics/Benchmark: Measurable indicators that allow verification that a specific Owner Objective or Requirement or element in the Design Narrative has been met. Performance Metrics are identified throughout the design of the Project with as many as possible being generated during the development of the Owner Objectives.

P. Phased Commissioning: Commissioning that is completed in phases (by floors, for example) due to the size of the structure or other scheduling issues, in order minimize the total construction time.

Q. Sampling: Functionally testing only a fraction of the total number of identical or near identical pieces of equipment.

R. Seasonal Tests: Tests that are deferred until the system(s) will experience conditions closer to their design conditions.

S. Simulated Condition: Condition that is created for the purpose of testing the response of a system.

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T. Simulated Signal: Disconnecting a sensor and using a signal generator to send an amperage, resistance or pressure to the transducer and DDC system to simulate a sensor value.

U. Start-up: The initial starting or activating of dynamic equipment, including executing construction checklists.

V. Systems Manual: A manual giving the operating staff the information needed to understand and optimally operate each system. The manual is in addition to the O&M Manuals submitted by the Contractor.

W. Test: Assessments that verify specific components, assemblies, systems, and interfaces among systems function and perform in accordance with the Owner’s objectives and the Contract Documents. Testing may include using manual (direct observation) or monitoring methods. Testing is the dynamic testing of specific and interacting equipment and systems in full operation. Tests are generally performed after construction checklists and start-up are complete. Some procedures in construction checklists test components, but reference to "testing" generally refers to those equipment and system tests conducted after Contractor startup and initial checkout.

X. Trending: Monitoring using the building control system.

1.4 CONTRACTOR'S RESPONSIBILITIES

A. In general the CxA writes the tests and documents the test results. The Contractor is responsible to execute the tests.

B. Attend the Commissioning Kick-off meeting and other Commissioning meetings as required.

C. Attend construction phase coordination meetings.

D. Attend testing, adjusting, and balancing review and coordination meetings.

E. Complete Pre-Functional Checklists (PFCs) for all systems and equipment to be commissioned. Sign and submit the PFC’s using the submittal process for tracking. The checklists should be completed and signed by the technician performing the work. Sampling is not permitted; 100% of all equipment shall be tested.

F. Submit completed manufacturer’s start-up checklists for the equipment being commissioned. Manufacturer’s start-up documents shall be provided in addition to the completed and signed Pre-Functional Checklists.

G. Provide measuring instruments and logging devices to record test data, and provide data acquisition equipment to record data for the complete range of testing for the required test period. Provide meters, gauges and instruments for Functional Performance Testing.

H. Perform all commissioning tests at the direction of the CxA.

I. Complete tasks required to correct items noted by the CxA in the Deficiency Log.

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J. Participate in systems, assemblies, equipment, and component maintenance orientation and inspection as directed by the CxA.

K. Provide O&M data including warranties, tables, recommended maintenance schedules, checklists, spare parts lists, wiring and parts diagrams, points of contact for service, for all equipment, systems and controls being commissioned.

L. Provide training of the Owner’s operations and maintenance personnel in accordance with the project’s construction documents and commissioning plan.

M. Provide information requested by the CxA for final commissioning documentation.

1.5 CxA'S RESPONSIBILITIES

A. Provide Project-specific construction checklists and commissioning process test procedures for actual Electrical systems, assemblies, equipment, and components to be furnished and installed as part of the construction contract.

B. Provide a Commissioning Plan.

C. Provide Pre-Functional Checklists.

D. Provide Functional Performance Checklists.

E. Direct commissioning testing.

F. Maintain and distribute the deficiency logs.

G. Verify that the training of the Owner’s personnel is complete and documented.

H. Provide a Preliminary Commissioning Summary Report.

I. Provide test data, inspection reports, and certificates in Systems Manual.

J. Provide a Final Commissioning Report.

1.6 PROCESS

A. Functional Performance Testing will commence after preliminary punch list items are completed by the Contractor. Functional Performance Testing will not be scheduled until the completed Pre-Functional Checklists and the Draft TAB Report are received by the Commissioning Authority.

1.1 SUBMITTALS

A. O&M MANUALS: The Contractor shall prepares O&M manuals, including clarifying and updating the original sequences of operation to as-built conditions, and submit to the owner within 90 days of the date of receipt of the certificate of occupancy.

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(1) CxA Review: Prior to Owner training and Substantial Completion, the CxA will review the Operation and Maintenance (O&M) manuals, documentation, “redline” as-builts, and warranty information for all commissioned systems. Deficiencies will be communicated to Owner and the A/E for consolidation with other review comments and resolution/correction by the Contractor.

(2) Single Line System Diagrams. The Contractor shall provide simplified professionally drawn, computer generated single line system diagrams on 8 ½” x 11” or 11” x 17” sheets.

(3) These shall show major pieces of equipment such as pumps, heat exchangers, air handling equipment, coils, control valves, expansion tanks, coils, service valves, etc. In some cases, the single line control diagrams submitted by the Contractor can suffice if updated to as-built status and approved by the Owner and CxA for this purpose.

B. Final TAB Report: The Contractor shall submit the final System Balancing (TAB) Report, describing the activities and measurements completed, to the Owner within 90 days of the date of receipt of the certificate of occupancy.

C. Record Drawings: Final record drawings shall be prepared by the Contractor, and submitted to the owner within 90 days of the date of receipt of the certificate of occupancy

1.7 COMMISSIONING DOCUMENTATION

A. Provide the following information to the CxA :

1. Approved submittals with designer review comments of submittals resolved, operation and maintenance manuals, and assistance in drafting the systems manuals, and other documents and reports requested by the Commissioning Authority in searchable pdf format

2. Identification of installed systems, assemblies, equipment, and components including design changes that occurred during the construction phase on as built markup of the design documents (plans and specifications)

3. Process and schedule for completing construction checklists and manufacturer's prestart and startup checklists for systems, assemblies, equipment, and components being commissioned.

4. Completed PFCs certifying that installation, prestart checks, and startup procedures have been completed.

5. Schedule indicating when HVAC systems, subsystems, equipment, and associated controls will be ready for functional testing. The date for permanent connection of power is required.

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6. Provide, documentation of completion of flushing and pressure test reports and certificates.

7. Corrective action documents.

8. Approved Testing, Adjusting, and Balancing (TAB) Report.

9. The Contractor shall provide updated “As-Built” single line drawings for MEP systems and BAS systems. The drawings are to be provided in the electronic format requested by the CxA. The drawings are required for inclusion in the Systems Manual that will be prepared by the CxA.

10. The Contractor shall provide updated “As-Built” control system sequences of operation for inclusion in the Systems Manual.

11. Any additional information requested by the CxA.

PART 2 - PRODUCTS

2.1 TEST EQUIPMENT

A. The Contractor shall provide all specialized tools, test equipment, and instruments required to execute startup, checkout, and FPT of systems and equipment.

B. Test equipment shall be of sufficient quality and accuracy to test and/or measure system performance according to specified tolerances.

(1) Test instruments shall bear a valid NIST-traceable calibration stamp.

(2) Frequency of calibration shall be in accordance applicable NEBB, AABC, or IEEE requirements.

C. All standard testing equipment required for the Contractor to perform installation, start-up and initial checkout and required testing shall be provided by the Contractor.

D. Special tools and instruments, only available from vendor, specific to a piece of equipment, required for testing equipment according to these Contract Documents shall be included in the base bid price.

2.2 TEST EQUIPMENT CALIBRATION:

A. The Contractor shall submit, within 90 days of notice to proceed and 30 days before any testing is performed, documentation of meeting the following calibration requirements.

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B. Electrical equipment testing instruments must be calibrated in accordance with the following frequency:

C. Field Instruments: Analog, 6 months maximum, digital, 12 months maximum.

D. Laboratory Instruments: 12 months.

E. Leased specialty equipment: 12 months where accuracy is guaranteed by lessor.

F. All testing equipment shall be of sufficient quality and accuracy to test and/or measure system performance with the tolerances specified in the Specifications.

G. If not otherwise given, the following minimum requirements apply: Temperature sensors and digital thermometers shall have a certified calibration within the past year to an accuracy of 0.5 degrees F and a resolution of + or - 0.1 degrees F.

H. Pressure sensors shall have an accuracy of + or - 2.0 percent of the value range being measured (not full range of meter) and have been calibrated within the last year. All equipment shall be calibrated according to the manufacturer’s recommended intervals. Calibration tags shall be affixed or certificates readily available.

PART 3 - EXECUTION

3.1 COORDINATION

A. Scheduling: The Contractor shall provide sufficient notice to the Commissioning Authority regarding the installation of static assemblies being commissioned and the schedule for the construction checklists, start-up and initial checkout of all commissioned dynamic equipment and systems.

B. Meetings: The Contractor will coordinate with the Commissioning Authority in a number of areas as described in this Section in order to facilitate the successful completion of the commissioning plan.

C. The Commissioning Authority will plan, conduct and take minutes at commissioning meetings.

D. All commissioning meetings shall be attended by the Contractor, and all appropriate or requested sub-contractors.

3.2 TESTING PREPARATION

A. Certify in writing the HVAC systems, subsystems, and equipment and controls have been installed, calibrated, started and are operating per the Contract Documents. Ensure the PFCs are completed and submitted by factory authorized start up tech and submitted to the Contractor.

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B. Certify in writing the Testing, Adjusting, and Balancing (TAB) procedures have been completed and that testing, adjusting, and balancing reports have been submitted, discrepancies corrected, and corrective work approved.

C. Place systems, subsystems, and equipment into operating mode to be tested (e.g., normal shutdown, normal auto position, normal manual position, unoccupied cycle, emergency power, and alarm conditions).

D. Inspect and verify the position of each device and interlock identified in the sequences, control schematics and or on checklists.

E. Check safety cutouts, alarms, and interlocks with smoke control and life-safety systems during each mode of operation.

F. Testing Instrumentation: Install measuring instruments and logging devices to record test data if directed by the CxA in the Commissioning Plan.

3.3 TESTING AND BALANCING VERIFICATION

A. Prior to performance of testing and balancing Work, provide copies of reports, sample forms, checklists, and certificates to the CxA.

B. Notify the CxA at least 10 days in advance of testing and balancing Work, and provide access for the CxA to witness testing and balancing Work.

C. Provide technicians, instrumentation, and tools to verify testing and balancing of HVAC systems at the direction of the CxA.

1. The Contractor will notify the CxA 10 days in advance of the date of Test and Balance (TAB) field verification. Notice will not include data points to be verified.

2. The same instruments (by model and serial number) that were used when original data were collected shall be used during the TAB verification with the CxA.

3. Failure of an item includes, other than sound, a deviation of more than 10 percent. Failure of more than 10 percent of selected items shall result in rejection of final testing, adjusting, and balancing report. For sound pressure readings, a deviation of 3 dB shall result in rejection of final testing. Variations in background noise must be considered.

4. Remedy the deficiency and notify the CxA so verification of failed portions can be performed.

D. TAB verification is to be conducted using the same instruments used for the conduct of the initial Testing Adjusting and Balancing of the systems.

3.4 GENERAL TESTING REQUIREMENTS

A. Provide technicians, instrumentation, and tools to perform commissioning tests at the direction of the CxA.

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B. Test all operating modes, interlocks, control responses, and responses to abnormal or emergency conditions, and verify proper response of building automation system controllers and sensors.

C. The Contractor shall execute the detailed testing plans, procedures, and checklists (PFCs and FPTs) prepared by the CxA for systems, subsystems, and equipment being commissioned.

D. Tests will be performed using design conditions whenever possible.

E. Simulated conditions may need to be imposed using an artificial load when it is not practical to test under design conditions. Before simulating conditions, calibrate testing instruments. Provide equipment to simulate loads. Set simulated conditions as directed by the CxA and document simulated conditions and methods of simulation. After tests, return settings to normal operating conditions.

F. The CxA may direct that set points be altered to achieve simulated conditions.

G. If tests cannot be completed because of a deficiency outside the scope of the HVAC system, the CxA will document the deficiency and report it to the Owner. After deficiencies are resolved, the Contractor will reschedule the tests.

H. If the testing plan indicates specific seasonal testing, complete appropriate initial performance tests and documentation and schedule seasonal tests.

3.5 PRE-FUNCTIONAL CHECKLISTS, START-UP, AND INITIAL CHECKOUT

A. The following procedures shall apply to all equipment and systems to be commissioned, according to Part 1 Systems to be commissioned

B. Pre-Functional Checklists:

(1) The Commissioning Authority develops new or adapts existing representative Pre-Functional checklists and procedures for commissioned equipment and assemblies.

(2) The Contractor is responsible to calibrate all field-installed sensors and actuators using test and documentation methods approved by the Commissioning Authority.

(3) On each Checklist the Contractor shall identify which trade or contractor is responsible for executing and documenting each of the line item tasks and shall note that trade on the checklist form.

(4) Checklists may be attached to start-up procedure forms.

C. Manufacturer Installation and Startup Procedures:

(1) The Contractor shall document their installation and startup utilizing manufacturer installation and startup procedures, check sheets and reports, in addition to the commissioning checklists.

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(2) The completed manufacturer startup reports shall be submitted to the Commissioning Authority within 5 days of startup. The Contractor shall clearly note any items that have not been completed and the plan for their completion.

D. Execution of Pre-Functional Checklists and Start-up:

(1) Each piece of equipment shall receive full construction checkout by the Contractor following the approved plan and forms. No sampling strategies are used. Only individuals that have direct knowledge and witnessed that a line item task on the construction checklist was actually performed shall initial or check that item off. It is not acceptable for non-witnessing supervisors to fill out the forms.

(2) The Contractors shall complete the pre-start procedures in the checklist prior to starting equipment, including but not limited to verification of completion of wiring, safeties, lubrication, drive rotation and proper electrical test readings. Startup shall be conducted under supervision of responsible manufacturer representatives for major pieces of equipment. The Contractor shall notify the Commissioning Authority at least 5 days in advance of any equipment start-up, providing the Commissioning Authority a copy of the pre-start sections of the installation and start-up plan at that time.

(3) The Commissioning Authority shall observe installation, start-up and checkout of selected systems. Procedures on the plans and checklists will be spot-checked by the Commissioning Authority prior to testing.

(4) The Contractor shall execute start-up and provide the Commissioning Authority with a signed and dated copy of the completed construction checklists and installation and start-up documentation. The Contractor shall clearly note any items that have not been completed and the plan for their completion.

(5) The Contractor shall operate each commissioned device or assembly to the full extent of its capability, from minimum to maximum, under automatic and manual control and verify that the equipment, system and assembly is functioning according to the specifications, manufacturer's recommendations and good operating practice.

(6) The Construction Checklist and manufacturer installation and startup check sheets and procedures for a given system shall be successfully completed and submitted prior to formal testing or testing, adjusting and balancing of the equipment.

(7) Where final balancing of a system or particular components are not specifically indicated to be performed by the Owner or Owner's consultants, the Contractor and Contractor shall provide final balancing and adjustments for operation within specified tolerances prior to testing and demonstration of such system.

(8) The Contractor shall submit installation, startup and checkout documentation prior to testing equipment.

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(9) The Commissioning Authority will review installation, startup and checkout documentation and identify incomplete areas.

(10) The Contractor shall correct all areas that are deficient or incomplete in the checklists in a timely manner.

3.6 FUNCTIONAL TESTING

A. The Contractor shall be responsible to fully test all systems and assemblies according to the Specifications. The Commissioning Authority will direct, witness and document most of the mechanical systems tests.

B. The Contractor shall execute all tests, except at the discretion of the Commissioning Authority and approval of the Contractor, the Commissioning Authority may execute tests of selected equipment.

C. Tests for a given system or assembly shall not be conducted until they are fully operational under normal and reliable control with control calibrations, programming and control system graphics complete and checked out and the Contractor have submitted a completed construction checklist and where applicable a startup report, satisfactory to the Commissioning Authority.

D. The objective of the Functional Performance Testing is to advance the building systems from a state of substantial completion to full dynamic operation in accordance with the specified design requirements, design intent, and Owner requirements.

E. Functional Performance Testing begins after all PFCs have been completed, submitted, and reviewed by the CxA, and after Test and Balance has been completed.

F. Functional Performance tests for the systems to be commissioned are defined in the Commissioning Plan. These tests are intended to be conclusive but may require minor modifications as system operation dictates.

(1) Field testing plans and testing requirements are specified in Division 23 Sections and sequences on the mechanical control sheets. The BAS supplier installer may assist or provide suggestions to the CxA regarding preparation of testing plans.

(2) Pipe system cleaning, flushing, hydrostatic tests, and chemical treatment requirements are specified in Division 23 Sections. Perform pipe system cleaning, flushing, and hydrostatic testing. Provide cleaning, flushing, testing, and treating completion confirmation and final reports to the CxA.

(3) Provide technicians, instrumentation, tools, and equipment to test performance of HVAC and BAS systems and equipment at the direction of the CxA. The CxA shall determine the sequence of testing and testing procedures for each equipment item to be tested.

(4) Provide technicians, instrumentation, tools, and equipment to test performance of air, steam, and hydronic distribution systems; special exhaust; and other

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distribution systems, including HVAC terminal equipment and unitary equipment.

(5) Provide technicians, instrumentation, tools, and equipment to test performance of vibration isolation and seismic controls as required in the Division Section “Testing and Balance.”

G. Objectives and Scope:

(1) The objective of testing is to demonstrate that each system is operating according to the documented Owner Objectives and Contract Documents. For dynamic systems, testing facilitates bringing the systems from a state of initial operation to full dynamic operation. For static elements, testing verifies the performance of the assembly in its installed state under conditions specified in the testing requirements. Additionally, during the testing process, areas of deficient performance are identified and corrected.

(2) In general, testing shall include each item in the sequence of operations, and other significant modes, sequences and control strategies not mentioned in the written sequences; including, but not limited to startup, shutdown, unoccupied and manual modes, modulation up and down the unit’s range of capacity, power failure, alarms, component staging and backup upon failure, interlocks with other equipment, and sensor and actuator calibrations.

(3) All interlocks and interactions between systems shall be tested.

(4) All larger equipment will be individually tested. Like units or assemblies that are numerous (many smaller rooftop packaged units, air terminal units, exhaust fans, windows, etc.) may have an appropriate sampling strategy applied. Heating equipment must be tested appropriately during winter and air conditioning equipment must be tested appropriately during summer to demonstrate performance under near-design conditions.

H. Setup: Each function and test shall be performed under conditions that simulate actual conditions as close as is practically possible. The Contractor shall provide all necessary materials, system modifications, etc., to produce the necessary flows, pressures, temperatures, etc. necessary to execute the test according to the specified conditions. At completion of the test, the Contractor shall return all affected building equipment and systems, due to these temporary modifications, to their pre-test condition.

I. Testing Order: In general, testing is conducted after Pre-Functional Checklists and start-up has been satisfactorily completed. The control system is sufficiently tested and approved by the Commissioning Authority before it is used for testing, adjusting and balancing or to verify performance of other components or systems. The air balancing and water balancing is completed and debugged before testing of air-related or water-related equipment or systems. Testing generally proceeds from components to sub-systems to systems. When the proper performance of all interacting individual systems has been achieved, the interface or coordinated responses between systems is verified.

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J. Problem Solving: The burden of problem solving is on the Contractor and the Designers, though the Commissioning Authority may recommend solutions to problems found.

K. Sampling: The following is a summary of the systems that are intended to be Functional Performance Tested as part of this project.

(1) The Contractor is responsible for testing 100% of all systems and components as part of their normal scope of work. The table offers a descriptive listing of equipment and components which will be tested and witnessed by the CxA for each of the typical systems during the commissioning process.

(2) If at any point, frequent failures are occurring and testing is becoming more troubleshooting than verification, the Commissioning Authority may stop the testing and require the Contractor to perform and document a checkout of the remaining units, prior to continuing with functionally testing the remaining units. Deficiency correction time and follow-up tests shall be required when deficiencies are discovered.

L. The costs for extensive retesting or expanded sample Functional Performance Tests shall be solely the responsibility of the Contractor. Any required retesting or expanded sample testing by the Contractor shall not be considered a justified reason for a claim of delay or for a time extension by the Contractor.

3.7 ISSUES AND NON-CONFORMANCE

A. The Commissioning Authority will record the results of document reviews, field observations, tests conducted or reviewed and trend logs or monitoring. All deficiencies or non-conformance issues will be recorded on a master Issues Log kept by the Commissioning Authority. The Issues Log will be kept updated by the Commissioning Authority.

B. A current copy of the Issues Log will be provided to the Contractor and Owner on a regular basis, as requested by the Contractor or Owner. New issues since the last printing will be clearly identified.

C. Issues warranting a request for information (RFI) will be forwarded by the Commissioning Authority to the designated party for developing the RFI, or the Commissioning Authority will generate and forward the RFI directly.

D. Issues of non-compliance or items that are incomplete or are requiring Designer input will be sent to the Contractor or Designer and Owner by the Commissioning Authority via appropriate channels.

E. The Commissioning Authority documents resolutions in the Issues Log and schedules retesting and re-inspection as needed.

F. Corrections of minor issues identified may be made during the tests at the discretion of the Commissioning Authority and with the issue and resolution documented in the Issues Log.

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G. Every effort will be made to expedite the testing process and minimize unnecessary delays, while not compromising the integrity of the procedures. However, the Commissioning Authority will not be pressured into overlooking deficient work or loosening acceptance criteria to satisfy scheduling or cost issues, unless there is an overriding reason to do so at the written request of the Owner.

H. Cost of Retesting: The Contractor shall reimburse the Owner and Commissioning Authority for costs when a scheduled test cannot be completed due to, but not limited to the following:

(1) Failure of the Contractor to schedule the test with all parties required to perform the test or with regulatory authorities required to witness the test.

(2) Failure of the Contractor to provide required notice for tests that have been cancelled or rescheduled.

(3) Failure of the Contractor to have in place test equipment, support equipment, instrumentation, permits, or other ancillary equipment or systems required for successful execution of the test.

(4) Failure of the Contractor to complete pre-start or start-up procedures or other work required as a prerequisite for execution of the test.

I. Any required retesting by the Contractor shall not be considered a justified reason for a claim of delay or time extension by the Contractor.

3.8 APPROVAL AND ACCEPTANCE:

A. The Commissioning Authority will note each satisfactorily demonstrated function on the test form. However, formal approval of an entire test form is not normally given. Functional approval or acceptance of a system is indicated after all testing and monitoring is complete and there are no outstanding issues for that equipment or assembly in the Commissioning Authority’s Issues Log.

3.9 DEFERRED TESTING

A. Unforeseen Deferred Tests: If any check or test cannot be completed due to the building structure, required occupancy condition or other deficiency, execution of checklists and testing may be delayed upon written approval of the Owner.

B. Seasonal Testing: During the warranty period, seasonal testing (tests delayed until weather conditions are closer to the system’s design) specified in the testing requirements shall be completed as part of this contract. The Commissioning Authority will coordinate this activity. Tests will be executed, documented and deficiencies corrected by the Contractor, with facilities staff and the Commissioning Authority witnessing. The Contractor shall make needed final adjustments to the O&M manuals and Record Documents due to the testing results.

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3.10 SCHEDULE

A. The Owner and Contractor shall work with the Commissioning Authority using established protocols to schedule the commissioning activities.

B. The Owner and Contractor shall integrate all commissioning activities into the master schedule. All parties will address scheduling problems and make necessary notifications in a timely manner in order to expedite the commissioning process. As construction progresses, more detailed commissioning schedules shall be developed.

C. The Contractor shall provide a minimum of 2 weeks notice prior to the date of testing to the Owner and Commissioning Authority. In addition, the Commissioning Authority and Owner shall be notified 48 hours in advance when tests are canceled or rescheduled.

END OF SECTION

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SECTION 23 09 00INSTRUMENTATION AND CONTROL FOR HVAC

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes control equipment for HVAC systems and components, including control components for terminal heating and cooling units not supplied with factory-wired controls.

B. Related Sections include the following:

1. Section 230519 "Meters and Gages for HVAC Piping" for measuring equipment that relates to this Section.

1.3 DEFINITIONS

A. DDC: Direct digital control.

B. I/O: Input/output.

C. LonWorks: A control network technology platform for designing and implementing interoperable control devices and networks.

D. MS/TP: Master slave/token passing.

E. PC: Personal computer.

F. PID: Proportional plus integral plus derivative.

G. RTD: Resistance temperature detector.

1.4 SYSTEM PERFORMANCE

A. Comply with the following performance requirements:1. Reporting Accuracy and Stability of Control: Report values and maintain

measured variables within tolerances as follows:

a. Water Temperature: Plus or minus .5 deg F

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b. Water Flow: Plus or minus 5 percent of full scale.c. Water Pressure: Plus or minus 1 percent of full scale.d. Space Temperature: Plus or minus .5 deg F (0.5 deg C).e. Ducted Air Temperature: Plus or minus .5 deg F (0.5 deg C).f. Outside Air Temperature: Plus or minus .5 deg F (1.0 deg C).g. Dew Point Temperature: Plus or minus 1 deg F (1.5 deg C).h. Temperature Differential: Plus or minus 0.25 deg F (0.15 deg C).i. Relative Humidity: Plus or minus 5 percent.j. Airflow (Pressurized Spaces): Plus or minus 3 percent of full scale.k. Airflow (Measuring Stations): Plus or minus 5 percent of full scale.l. Airflow (Terminal): Plus or minus 5 percent of full scale.m. Air Pressure (Space): Plus or minus 0.005-inch wg (2.5 Pa).n. Air Pressure (Ducts): Plus or minus 0.05-inch wg (25 Pa).o. Carbon Monoxide: Plus or minus 5 percent of reading.p. Carbon Dioxide: Plus or minus 20 ppm.

1.5 SEQUENCE OF OPERATION(Refer to plans)

1.6 ACTION SUBMITTALS

A. Product Data: Include manufacturer's technical literature for each control device. Indicate dimensions, capacities, performance characteristics, electrical characteristics, finishes for materials, and installation and startup instructions for each type of product indicated.

1. DDC System Hardware: Bill of materials of equipment indicating quantity, manufacturer, and model number. Include technical data for operator workstation equipment, interface equipment, control units, transducers/transmitters, sensors, actuators, valves, relays/switches, control panels, and operator interface equipment.

2. Control System Software: Include technical data for operating system software, operator interface, color graphics, and other third-party applications.

3. Controlled Systems: Instrumentation list with element name, type of device, manufacturer, model number, and product data. Include written description of sequence of operation including schematic diagram.

B. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

1. Bill of materials of equipment indicating quantity, manufacturer, and model number.

2. Schematic flow diagrams showing fans, pumps, coils, dampers, valves, and control devices.

3. Wiring Diagrams: Power, signal, and control wiring.4. Details of control panel faces, including controls, instruments, and labeling.5. Written description of sequence of operation.6. Schedule of dampers including size, leakage, and flow characteristics.7. Schedule of valves including flow characteristics.

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8. DDC System Hardware:

a. Wiring diagrams for control units with termination numbers.b. Schematic diagrams and floor plans for field sensors and control hardware.c. Schematic diagrams for control, communication, and power wiring,

showing trunk data conductors and wiring between operator workstation and control unit locations.

9. Control System Software: List of color graphics indicating monitored systems, data (connected and calculated) point addresses, output schedule, and operator notations.

10. Controlled Systems:

a. Schematic diagrams of each controlled system with control points labeled and control elements graphically shown, with wiring.

b. Scaled drawings showing mounting, routing, and wiring of elements including bases and special construction.

c. Written description of sequence of operation including schematic diagram.d. Points list.

C. Samples for Initial Selection: For each color required, of each type of thermostat or sensor cover with factory-applied color finishes.

D. Samples for Verification: For each color required, of each type of thermostat or sensor cover.

1.7 INFORMATIONAL SUBMITTALS

A. Data Communications Protocol Certificates: Certify that each proposed DDC system component complies with ASHRAE 135.

B. Data Communications Protocol Certificates: Certify that each proposed DDC system component complies with LonWorks.

C. Qualification Data: For Installer and manufacturer.

D. Software Upgrade Kit: For Owner to use in modifying software to suit future systems revisions or monitoring and control revisions.

E. Field quality-control test reports.

1.8 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For HVAC instrumentation and control system to include in emergency, operation, and maintenance manuals. In addition to items specified in Section 017823 "Operation and Maintenance Data," include the following:

1. Maintenance instructions and lists of spare parts for each type of control device and compressed-air station.

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2. Interconnection wiring diagrams with identified and numbered system components and devices.

3. Keyboard illustrations and step-by-step procedures indexed for each operator function.

4. Inspection period, cleaning methods, cleaning materials recommended, and calibration tolerances.

5. Calibration records and list of set points.

B. Software and Firmware Operational Documentation: Include the following:

1. Software operating and upgrade manuals.2. Program Software Backup: On a magnetic media or compact disc, complete with

data files.3. Device address list.4. Printout of software application and graphic screens.5. Software license required by and installed for DDC workstations and control

systems.

1.9 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.1. Maintenance Materials: One thermostat adjusting key(s).

1.10 QUALITY ASSURANCE

A. Installer Qualifications: Automatic control system manufacturer's authorized representative who is trained and approved for installation of system components required for this Project.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

C. Comply with ASHRAE 135 for DDC system components.

1.11 DELIVERY, STORAGE, AND HANDLING

A. Factory-Mounted Components: Where control devices specified in this Section are indicated to be factory mounted on equipment, arrange for shipping of control devices to equipment manufacturer.

B. System Software: Update to latest version of software at Project completion.

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1.12 COORDINATION

A. Coordinate location of thermostats, humidistats, and other exposed control sensors with plans and room details before installation.

B. Coordinate equipment with Section 281600 "Intrusion Detection" to achieve compatibility with equipment that interfaces with that system and with building master clock.

C. Coordinate equipment with Section 281300 "Access Control" to achieve compatibility with equipment that interfaces with that system.

D. Coordinate equipment with Section 275313 "Clock Systems" to achieve compatibility with equipment that interfaces with that system.

E. Coordinate equipment with Section 284619 "PLC Electronic Detention Monitoring and Control Systems" to achieve compatibility with equipment that interfaces with that system.

F. Coordinate equipment with Section 260943.13 "Addressable-Fixture Lighting Controls" and Section 260943.23 "Relay-Based Lighting Controls" to achieve compatibility with equipment that interfaces with that system.

G. Coordinate equipment with Section 283111 "Digital, Addressable Fire-Alarm System" and Section 283112 "Zoned (DC Loop) Fire-Alarm System" to achieve compatibility with equipment that interfaces with that system.

H. Coordinate supply of conditioned electrical branch circuits for control units and operator workstation.

I. Coordinate equipment with Section 260913 "Electrical Power Monitoring and Control" to achieve compatibility of communication interfaces.

J. Coordinate equipment with Section 262416 "Panelboards" to achieve compatibility with starter coils and annunciation devices.

K. Coordinate equipment with Section 262419 "Motor-Control Centers" to achieve compatibility with motor starters and annunciation devices.

L. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Section 033000 "Cast-in-Place Concrete."

PART 2 - PRODUCTS

2.1 CONTROL SYSTEM

A. All control system components provided must be compatible the UNF campus ANDOVER control system.

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B. Control system shall consist of sensors, indicators, actuators, final control elements, interface equipment, other apparatus, accessories, and software connected to distributed controllers operating in multiuser, multitasking environment on token-passing network and programmed to control mechanical systems. An operator workstation permits interface with the network via dynamic color graphics with each mechanical system, building floor plan, and control device depicted by point-and-click graphics.

C. Control system shall include the following:

1. Building intrusion detection system specified in Section 281600 "Intrusion Detection."

2. Building clock control system specified in Section 275313 "Clock Systems."3. Building lighting control system specified in Section 260943.13 "Addressable-

Fixture Lighting Controls" and Section 260943.23 "Relay-Based Lighting Controls."

4. Fire alarm system specified in Section 283111 "Digital, Addressable Fire-Alarm System" and Section 283112 "Zoned (DC Loop) Fire-Alarm System."

5. Sentry Logic System: Provide programming to incorporate the Andover BMS information into the Sentry Logic system to add critical point alarming, trending, paging, and email notification to selected individuals.

6. Energy Reporting & Utility Information7. FAMIS System Interface

2.2 DDC EQUIPMENT

A. Operator Workstation: None required.

B. Control Units: Modular, comprising processor board with programmable, nonvolatile, random-access memory; local operator access and display panel; integral interface equipment; and backup power source.

1. Units monitor or control each I/O point; process information; execute commands from other control units, devices, and operator stations; and download from or upload to the existing campus ANDOVER control system.

2. Stand-alone mode control functions operate regardless of network status. Functions include the following:

a. Global communications.b. Discrete/digital, analog, and pulse I/O.c. Monitoring, controlling, or addressing data points.d. Software applications, scheduling, and alarm processing.e. Testing and developing control algorithms without disrupting field hardware

and controlled environment.

3. Standard Application Programs:

a. Electric Control Programs: Demand limiting, duty cycling, automatic time scheduling, start/stop time optimization, night setback/setup, on-off control

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with differential sequencing, staggered start, antishort cycling, PID control, DDC with fine tuning, and trend logging.

b. HVAC Control Programs: Optimal run time, supply-air reset, and enthalpy switchover.

c. Chiller Control Programs: Control function of condenser-water reset, chilled-water reset, and equipment sequencing.

d. Programming Application Features: Include trend point; alarm processing and messaging; weekly, monthly, and annual scheduling; energy calculations; run-time totalization; and security access.

e. Remote communications.f. Maintenance management.g. Units of Measure: Inch-pound and SI (metric).

4. Local operator interface provides for download from or upload to operator workstation or diagnostic terminal unit.

5. ASHRAE 135 Compliance: Control units shall use ASHRAE 135 protocol and communicate using ISO 8802-3 (Ethernet) datalink/physical layer protocol.

6. LonWorks Compliance: Control units shall use LonTalk protocol and communicate using EIA/CEA 709.1 datalink/physical layer protocol.

C. Local Control Units: Modular, comprising processor board with electronically programmable, nonvolatile, read-only memory; and backup power source.

1. Units monitor or control each I/O point, process information, and download from or upload to operator workstation or diagnostic terminal unit.

2. Stand-alone mode control functions operate regardless of network status. Functions include the following:

a. Global communications.b. Discrete/digital, analog, and pulse I/O.c. Monitoring, controlling, or addressing data points.

3. Local operator interface provides for download from or upload to operator workstation or diagnostic terminal unit.

4. ASHRAE 135 Compliance: Control units shall use ASHRAE 135 protocol and communicate using ISO 8802-3 (Ethernet) datalink/physical layer protocol.

5. LonWorks Compliance: Control units shall use LonTalk protocol and communicate using EIA/CEA 709.1 datalink/physical layer protocol.

D. I/O Interface: Hardwired inputs and outputs may tie into system through controllers. Protect points so that shorting will cause no damage to controllers.

1. Binary Inputs: Allow monitoring of on-off signals without external power.2. Pulse Accumulation Inputs: Accept up to 10 pulses per second.3. Analog Inputs: Allow monitoring of low-voltage (0- to 10-V dc), current (4 to 20

mA), or resistance signals.4. Binary Outputs: Provide on-off or pulsed low-voltage signal, selectable for

normally open or normally closed operation with three-position (on-off-auto) override switches and status lights.

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5. Analog Outputs: Provide modulating signal, either low voltage (0- to 10-V dc) or current (4 to 20 mA) with status lights, two-position (auto-manual) switch, and manually adjustable potentiometer.

6. Tri-State Outputs: Provide two coordinated binary outputs for control of three-point, floating-type electronic actuators.

7. Universal I/Os: Provide software selectable binary or analog outputs.

E. Power Supplies: Transformers with Class 2 current-limiting type or overcurrent protection; limit connected loads to 80 percent of rated capacity. DC power supply shall match output current and voltage requirements and be full-wave rectifier type with the following:

1. Output ripple of 5.0 mV maximum peak to peak.2. Combined 1 percent line and load regulation with 100-mic.sec. response time for

50 percent load changes.3. Built-in overvoltage and overcurrent protection and be able to withstand 150

percent overload for at least 3 seconds without failure.

F. Power Line Filtering: Internal or external transient voltage and surge suppression for workstations or controllers with the following:

1. Minimum dielectric strength of 1000 V.2. Maximum response time of 10 nanoseconds.3. Minimum transverse-mode noise attenuation of 65 dB.4. Minimum common-mode noise attenuation of 150 dB at 40 to 100 Hz.

2.3 UNITARY CONTROLLERS

A. Unitized, capable of stand-alone operation with sufficient memory to support its operating system, database, and programming requirements, and with sufficient I/O capacity for the application.

1. Configuration: Local keypad and display; diagnostic LEDs for power, communication, and processor; wiring termination to terminal strip or card connected with ribbon cable; memory with bios; and 72-hour battery backup.

2. Operating System: Manage I/O communication to allow distributed controllers to share real and virtual object information and allow central monitoring and alarms. Perform scheduling with real-time clock. Perform automatic system diagnostics; monitor system and report failures.

3. ASHRAE 135 Compliance: Communicate using read (execute and initiate) and write (execute and initiate) property services defined in ASHRAE 135. Reside on network using MS/TP datalink/physical layer protocol and have service communication port for connection to diagnostic terminal unit.

4. LonWorks Compliance: Communicate using EIA/CEA 709.1 datalink/physical layer protocol using LonTalk protocol.

5. Enclosure: Dustproof rated for operation at 32 to 120 deg F 6. Enclosure: Waterproof rated for operation at 40 to 150 deg F

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2.4 ALARM PANELS

A. Unitized cabinet with suitable brackets for wall or floor mounting. Fabricate of 0.06-inch thick, furniture-quality steel or extruded-aluminum alloy, totally enclosed, with hinged doors and keyed lock and with manufacturer's standard shop-painted finish. Provide common keying for all panels.

B. Indicating light for each alarm point, single horn, acknowledge switch, and test switch, mounted on hinged cover.

1. Alarm Condition: Indicating light flashes and horn sounds.2. Acknowledge Switch: Horn is silent and indicating light is steady.3. Second Alarm: Horn sounds and indicating light is steady.4. Alarm Condition Cleared: System is reset and indicating light is extinguished.5. Contacts in alarm panel allow remote monitoring by independent alarm company.

2.5 ELECTRONIC SENSORS

A. Description: Vibration and corrosion resistant; for wall, immersion, or duct mounting as required.

B. Thermistor Temperature Sensors and Transmitters:

1. Available Manufacturers:a. Precon \ ST-FZ series or approved equalb. Andoverc. Greystone

2. Accuracy: Plus or minus 0.5 deg F at calibration point.3. Wire: Twisted, shielded-pair cable.4. Insertion Elements in Ducts: Single point, appropriate for duct size; use where

not affected by temperature stratification or where ducts are smaller than 9 sq. ft. 5. Averaging Elements in Ducts: ; use where prone to temperature stratification or

where ducts are larger than 10 sq. ft.6. Insertion Elements for Liquids: stainless-steel socket with minimum insertion

length of 2-1/2 inches 7. Room Sensor Cover Construction: Manufacturer's standard locking covers.

a. Set-Point Adjustment: Concealed.b. Set-Point Indication: Concealed.c. Color: whited. Orientation: Vertical.

8. Outside-Air Sensors: Watertight inlet fitting, shielded from direct sunlight.9. Room Security Sensors: Stainless-steel cover plate with insulated back and

security screws.

C. RTDs and Transmitters:

1. Available Manufacturers:

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a. BEC Controls Corporation.b. MAMAC Systems, Inc.c. RDF Corporation.d.

2. Accuracy: Plus or minus 0.2 percent at calibration point.3. Wire: Twisted, shielded-pair cable.4. Insertion Elements in Ducts: Single point, appropriate length for the application;

use where not affected by temperature stratification or where ducts are smaller than 9 sq. ft. .

5. Averaging Elements in Ducts: ; use where prone to temperature stratification or where ducts are larger than 9 sq. ft.;length as required.

6. Insertion Elements for Liquids: Brass socket with minimum insertion length of 2-1/2 inches

7. Room Sensor Cover Construction: Manufacturer's standard locking covers.

a. Set-Point Adjustment: Concealed.b. Set-Point Indication: Concealed.c. Thermometer: Concealed.d. Color: whitee. Orientation: Vertical.

8. Outside-Air Sensors: Watertight inlet fitting, shielded from direct sunlight.9. Room Security Sensors: Stainless-steel cover plate with insulated back and

security screws.

D. Humidity Sensors: Bulk polymer sensor element.

1. Available Manufacturers:a. Veris Industries

2. Accuracy: 5 percent full range with linear output.3. Room Sensor Range: 0 to 100 percent relative humidity.4. Room Sensor Cover Construction: Manufacturer's standard locking covers.

a. Set-Point Adjustment: none .b. Set-Point Indication: none.c. Color: whited. Orientation: Vertical.

5. Duct Sensor: 0 to 100 percent relative humidity range with element guard and mounting plate.

6. Outside-Air Sensor: 0 to 100 percent relative humidity range with mounting enclosure, suitable for operation at outdoor temperatures of 0 to 120 deg F

7. Duct and Sensors: With element guard and mounting plate, range of 0 to 100 percent relative humidity.

E. Pressure Transmitters/Transducers:

1. Available Manufacturers:a. Veris Industries \ PX Series

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2. Static-Pressure Transmitter: Nondirectional sensor with suitable range for expected input, and temperature compensated.

a. Accuracy: 2 percent of full scale with repeatability of 0.5 percent.b. Output: 4 to 20 mA.c. Duct Static-Pressure Range: 0- to 5-inch wg

3. Water Pressure Transducers: Stainless-steel diaphragm construction, suitable for service; minimum 150-psig operating pressure; linear output 4 to 20 mA.

4. Water Differential-Pressure Transducers: Stainless-steel diaphragm construction, suitable for service; minimum 150-psig operating pressure and tested to 300-psig linear output 4 to 20 mA.

5. Differential-Pressure Switch (Air or Water): Snap acting, with pilot-duty rating and with suitable scale range and differential.

6. Pressure Transmitters: Direct acting for gas, liquid, or steam service; range suitable for system; linear output 4 to 20 mA.

2.6 STATUS SENSORS

A. Current Switches: Self-powered, solid-state with adjustable trip current, selected to match current and system output requirements.1. Manufacturer\Model: Hawkeye 600

B. Water-Flow Switches: Bellows-actuated mercury or snap-acting type with pilot-duty rating, stainless-steel or bronze paddle, with appropriate range and differential adjustment, in NEMA 250, Type 1 enclosure.

a.

2.7 ACTUATORS

A. Electric Motors: Size to operate with sufficient reserve power to provide smooth modulating action or two-position action.

1. Comply with requirements in Section 230513 "Common Motor Requirements for HVAC Equipment."

2. Permanent Split-Capacitor or Shaded-Pole Type: Gear trains completely oil immersed and sealed. Equip spring-return motors with integral spiral-spring mechanism in housings designed for easy removal for service or adjustment of limit switches, auxiliary switches, or feedback potentiometer.

3. Nonspring-Return Motors for Valves Larger Than NPS 2-1/2 : Size for running torque of 150 in. x lbf and breakaway torque of 300 in. x lbf .

4. Spring-Return Motors for Valves Larger Than NPS 2-1/2: Size for running and breakaway torque of 150 in. x lbf

5. Nonspring-Return Motors for Dampers Larger Than 25 Sq. Ft.: Size for running torque of 150 in. x lbf and breakaway torque of 300 in. x lbf.

6. Spring-Return Motors for Dampers Larger Than 25 Sq. Ft. Size for running and breakaway torque of 150 in. x lbf

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B. Electronic Actuators: Direct-coupled type designed for minimum 60,000 full-stroke cycles at rated torque.

1. Available Manufacturers:

a. Belimo Aircontrols (USA), Inc.

2. Valves: Size for torque required for valve close off at maximum pump differential pressure.

3. Dampers: Size for running torque calculated as follows:

a. Parallel-Blade Damper with Edge Seals: 7 inch-lb/sq. ft. of damper.b. Opposed-Blade Damper with Edge Seals: 5 inch-lb/sq. ft. of damper.c. Parallel-Blade Damper without Edge Seals: 4 inch-lb/sq. of damper.d. Opposed-Blade Damper without Edge Seals: 3 inch-lb/sq. ft. of damper.e. Dampers with 2- to 3-Inch wg of Pressure Drop or Face Velocities of 1000

to 2500 fpm: Increase running torque by 1.5.f. Dampers with 3- to 4-Inch wg of Pressure Drop or Face Velocities of 2500

to 3000 fpm: Increase running torque by 2.0.

4. Coupling: Direct-coupled type5. Overload Protection: Electronic overload or digital rotation-sensing circuitry.6. Power Requirements: 24-V ac.7. Power Requirements (Modulating): Maximum 10 VA at 24-V ac or 8 W at 24-V

dc.8. Proportional Signal: 2- to 10-V dc or 4 to 20 mA, and 2- to 10-V dc position

feedback signal.9. Temperature Rating: Minus 22 to plus 122 deg F10. Run Time: 12 seconds open, 5 seconds closed.11. Terminal unit actuators shall be tri-state(floating)12. All other actuators shall be analog with position feedback.

2.8 CONTROL VALVES

A. Available Manufacturers:

1. Belimo

B. Control Valves: Factory fabricated, of type, body material, and pressure class based on maximum pressure and temperature rating of piping system, unless otherwise indicated.

C. Hydronic system valves shall have the following characteristics:

1. NPS 2 and Smaller: Class 125 bronze or brass body, chrome plated brass or bronze ball and stem, and screwed ends with EPDM lubricated O-rings and a brass or TEFZEL characterizing disc.

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2. NPS 2-1/2 and Larger: Class 125 iron body, stainless steel ball blowout proof stem, flanged ends, and dual EPDM O-ring packing, PTFE Seats, and stainless steel disc.

3. Sizing: 5-psig maximum pressure drop at design flow rate or the following:

a. Two Position: Line size.b. Two-Way Modulating: Either the value specified above or twice the load

pressure drop, whichever is more.c. Three-Way Modulating: Twice the load pressure drop, but not more than

value specified above.

4. Flow Characteristics: Two-way valves shall have equal percentage characteristics; three-way valves shall have linear characteristics.

5. Close-Off (Differential) Pressure Rating: Combination of actuator and trim shall provide minimum close-off pressure rating of 150 percent of total system (pump) head for two-way valves and 100 percent of pressure differential across valve or 100 percent of total system (pump) head.

D.

Terminal Unit Control Valves(PICCV valves) NPS 2” and smaller characterized control valves for individual coil control shall be provided as part of a pipe package supplied by the valve manufacturer. The supply side of the coil shall contain a strainer/shut-off ball valve/drain [an integrated isolation ball valve/manual air vent] with a P/T port. The return side of the coil shall contain a union fitting with a P/T port, characterized control valve, an integrated manual balancing valve/union/isolation ball valve/manual air vent with P/T port. Shut-off valves as an integrated part of the control valve are prohibited.

2.9 DAMPERS

A. Available Manufacturers:1. TAMCO (T. A. Morrison & Co. Inc.).2. Ruskin

B. Dampers: AMCA-rated, opposed-blade design; 0.125-inch- minimum thick, extruded-aluminum frames with holes for duct mounting; damper blades shall not be less than 0.064-inch- thick galvanized steel with maximum blade width of 8 inches and length of 48 inches.

1. Secure blades to 1/2-inch- diameter, zinc-plated axles using zinc-plated hardware, with nylon blade bearings, blade-linkage hardware of zinc-plated steel and brass, ends sealed against spring-stainless-steel blade bearings, and thrust bearings at each end of every blade.

2. Operating Temperature Range: From minus 40 to plus 200 deg F 3. Edge Seals, Standard Pressure Applications: Closed-cell neoprene. Maximum

leakage 3 cfm/sqft at 1 inch w.g. static pressure.

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2.10 CONTROL CABLE

A. Electronic and fiber-optic cables for control wiring are specified in Section 271500 "Communications Horizontal Cabling."

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that conditioned power supply is available to control units and operator workstation.

3.2 INSTALLATION

A. Install software in control units and operator workstation(s). Implement all features of programs to specified requirements and as appropriate to sequence of operation.

B. Connect and configure equipment and software to achieve sequence of operation specified.

C. Verify location of thermostats, humidistats, and other exposed control sensors with Drawings and room details before installation. Install devices 48 inches above the floor.

1. Install averaging elements in ducts and plenums in crossing or zigzag pattern.

D. Install guards on thermostats in the following locations:

1. Entrances.2. Public areas.3. Where indicated.

E. Install automatic dampers according to Section 233300 "Air Duct Accessories."

F. Install damper motors on outside of duct in warm areas, not in locations exposed to outdoor temperatures.

G. Install labels and nameplates to identify control components according to Section 230553 "Identification for HVAC Piping and Equipment."

H. Install hydronic instrument wells, valves, and other accessories according to Section 232116 Hydronic Piping Specialties."

I. Install steam and condensate instrument wells, valves, and other accessories according toSection 232216 Steam and Condensate Piping Specialties."

J. Install refrigerant instrument wells, valves, and other accessories according to Section 232300 "Refrigerant Piping."

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K. Install duct volume-control dampers according to Section 233113 "Metal Ducts" and Section 233116 "Nonmetal Ducts."

L. Install electronic and fiber-optic cables according to Section 271500 "Communications Horizontal Cabling."

3.3 ELECTRICAL WIRING AND CONNECTION INSTALLATION

A. Install raceways, boxes, and cabinets according to Section 260533 "Raceways and Boxes for Electrical Systems."

B. Install building wire and cable according to Section 260519 "Low-Voltage Electrical Power Conductors and Cables."

C. Install signal and communication cable according to Section 271500 "Communications Horizontal Cabling."

1. Conceal cable, except in mechanical rooms and areas where other conduit and piping are exposed.

2. Install exposed cable in raceway.3. Install concealed cable in raceway.4. Bundle and harness multiconductor instrument cable in place of single cables

where several cables follow a common path.5. Fasten flexible conductors, bridging cabinets and doors, along hinge side; protect

against abrasion. Tie and support conductors.6. Number-code or color-code conductors for future identification and service of

control system, except local individual room control cables.7. Install wire and cable with sufficient slack and flexible connections to allow for

vibration of piping and equipment.

D. Connect manual-reset limit controls independent of manual-control switch positions. Automatic duct heater resets may be connected in interlock circuit of power controllers.

E. Connect hand-off-auto selector switches to override automatic interlock controls when switch is in hand position.

3.4 FIELD QUALITY CONTROL

A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust field-assembled components and equipment installation, including connections, and to assist in field testing. Report results in writing.

B. Perform the following field tests and inspections and prepare test reports:

1. Operational Test: After electrical circuitry has been energized, start units to confirm proper unit operation. Remove and replace malfunctioning units and retest.

2. Test and adjust controls and safeties.

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3. Leak Test: After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist.

4. Pressure test control air piping at 30 psig (207 kPa) or 1.5 times the operating pressure for 24 hours, with maximum 5-psig (35-kPa) loss.

5. Pressure test high-pressure control air piping at 150 psig (1034 kPa) and low-pressure control air piping at 30 psig (207 kPa) for 2 hours, with maximum 1-psig (7-kPa) loss.

6. Test calibration of electronic controllers by disconnecting input sensors and stimulating operation with compatible signal generator.

7. Test each point through its full operating range to verify that safety and operating control set points are as required.

8. Test each control loop to verify stable mode of operation and compliance with sequence of operation. Adjust PID actions.

9. Test each system for compliance with sequence of operation.10. Test software and hardware interlocks.

C. DDC Verification:

1. Verify that instruments are installed before calibration, testing, and loop or leak checks.

2. Check instruments for proper location and accessibility.3. Check instrument installation for direction of flow, elevation, orientation, insertion

depth, and other applicable considerations.4. Check instrument tubing for proper fittings, slope, material, and support.5. Check installation of air supply for each instrument.6. Check flow instruments. Inspect tag number and line and bore size, and verify

that inlet side is identified and that meters are installed correctly.7. Check pressure instruments, piping slope, installation of valve manifold, and self-

contained pressure regulators.8. Check temperature instruments and material and length of sensing elements.9. Check control valves. Verify that they are in correct direction.10. Check air-operated dampers. Verify that pressure gages are provided and that

proper blade alignment, either parallel or opposed, has been provided.11. Check DDC system as follows:

a. Verify that DDC controller power supply is from emergency power supply, if applicable.

b. Verify that wires at control panels are tagged with their service designation and approved tagging system.

c. Verify that spare I/O capacity has been provided.d. Verify that DDC controllers are protected from power supply surges.

D. Replace damaged or malfunctioning controls and equipment and repeat testing procedures.

3.5 ADJUSTING

A. Calibrating and Adjusting:

1. Calibrate instruments.

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2. Make three-point calibration test for both linearity and accuracy for each analog instrument.

3. Calibrate equipment and procedures using manufacturer's written recommendations and instruction manuals. Use test equipment with accuracy at least double that of instrument being calibrated.

4. Control System Inputs and Outputs:

a. Check analog inputs at 0, 50, and 100 percent of span.b. Check analog outputs using milliampere meter at 0, 50, and 100 percent

output.c. Check digital inputs using jumper wire.d. Check digital outputs using ohmmeter to test for contact making or

breaking.e. Check resistance temperature inputs at 0, 50, and 100 percent of span

using a precision-resistant source.

5. Flow:

a. Set differential pressure flow transmitters for 0 and 100 percent values with 3-point calibration accomplished at 50, 90, and 100 percent of span.

b. Manually operate flow switches to verify that they make or break contact.

6. Pressure:

a. Calibrate pressure transmitters at 0, 50, and 100 percent of span.b. Calibrate pressure switches to make or break contacts, with adjustable

differential set at minimum.

7. Temperature:

a. Calibrate resistance temperature transmitters at 0, 50, and 100 percent of span using a precision-resistance source.

b. Calibrate temperature switches to make or break contacts.

8. Stroke and adjust control valves and dampers without positioners, following the manufacturer's recommended procedure, so that valve or damper is 100 percent open and closed.

9. Stroke and adjust control valves and dampers with positioners, following manufacturer's recommended procedure, so that valve and damper is 0, 50, and 100 percent closed.

10. Provide diagnostic and test instruments for calibration and adjustment of system.11. Provide written description of procedures and equipment for calibrating each type

of instrument. Submit procedures review and approval before initiating startup procedures.

B. Adjust initial temperature and humidity set points.

C. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion, provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to three visits to Project during other than normal occupancy hours for this purpose.

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3.6 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain HVAC instrumentation and controls. Refer to Section 017900 "Demonstration and Training."

END OF SECTION 230900

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SECTION 232113 - HYDRONIC PIPING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes pipe and fitting materials and joining methods for the following:

1. Hot-water heating piping.

2. Chilled-water piping.

3. Dual-temperature heating and cooling water piping.

4. Condenser-water piping.

5. Glycol cooling-water piping.

6. Makeup-water piping.

7. Condensate-drain piping.

8. Blowdown-drain piping.

9. Air-vent piping.

10. Safety-valve-inlet and -outlet piping.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of the following:

1. Plastic pipe and fittings with solvent cement.

2. RTRP and RTRF with adhesive.

3. Pressure-seal fittings.

4. Chemical treatment.

B. Delegated-Design Submittal:

1. Design calculations and detailed fabrication and assembly of pipe anchors and alignment

guides, hangers and supports for multiple pipes, expansion joints and loops, and

attachments of the same to the building structure.

2. Locations of pipe anchors and alignment guides and expansion joints and loops.

3. Locations of and details for penetrations, including sleeves and sleeve seals for exterior

walls, floors, basement, and foundation walls.

4. Locations of and details for penetration and firestopping for fire- and smoke-rated wall

and floor and ceiling assemblies.

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1.4 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Piping layout, drawn to scale, on which the following items are shown

and coordinated with each other, using input from installers of the items involved:

1. Suspended ceiling components.

2. Other building services.

3. Structural members.

B. Qualification Data: For Installer.

C. Welding certificates.

D. Field quality-control reports.

E. Water Analysis: Submit a copy of the water analysis to illustrate water quality available at

Project site.

1.5 QUALITY ASSURANCE

A. Installer Qualifications:

1. Installers of Pressure-Sealed Joints: Installers shall be certified by pressure-seal joint

manufacturer as having been trained and qualified to join piping with pressure-seal pipe

couplings and fittings.

2. Fiberglass Pipe and Fitting Installers: Installers of RTRF and RTRP shall be certified by

manufacturer of pipes and fittings as having been trained and qualified to join fiberglass

piping with manufacturer-recommended adhesive.

B. Steel Support Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M,

"Structural Welding Code - Steel."

C. Pipe Welding: Qualify procedures and operators according to ASME Boiler and Pressure Vessel

Code: Section IX.

1. Comply with ASME B31.9, "Building Services Piping," for materials, products, and

installation.

2. Certify that each welder has passed AWS qualification tests for welding processes

involved and that certification is current.

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PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Hydronic piping components and installation shall be capable of withstanding the following

minimum working pressure and temperature unless otherwise indicated:

1. Hot-Water Heating Piping: <Insert psig> at [200 deg F].

2. Chilled-Water Piping: <Insert psig> at [200 deg F].

3. Dual-Temperature Heating and Cooling Water Piping: <Insert psig> at [200 deg F].

4. Condenser-Water Piping: <Insert psig> at [150 deg F].

5. Glycol Cooling-Water Piping: <Insert psig> at [150 deg F].

6. Makeup-Water Piping: 80 psig at 150 deg F.

7. Condensate-Drain Piping: 150 deg F.

8. Blowdown-Drain Piping: 200 deg F.

9. Air-Vent Piping: 200 deg F.

10. Safety-Valve-Inlet and -Outlet Piping: Equal to the pressure of the piping system to

which it is attached.

2.2 COPPER TUBE AND FITTINGS

A. Drawn-Temper Copper Tubing: [ASTM B 88, Type L] [ASTM B 88, Type M].

B. Annealed-Temper Copper Tubing: ASTM B 88, Type K.

C. DWV Copper Tubing: ASTM B 306, Type DWV.

D. Grooved, Mechanical-Joint, Wrought-Copper Fittings: ASME B16.22.

1. Grooved-End Copper Fittings: ASTM B 75, copper tube or ASTM B 584, bronze casting.

2. Grooved-End-Tube Couplings: Rigid pattern unless otherwise indicated; gasketed fitting.

Ductile-iron housing with keys matching pipe and fitting grooves,[ prelubricated]

EPDM gasket rated for minimum 230 deg F for use with housing, and steel bolts and

nuts.

E. Copper or Bronze Pressure-Seal Fittings:

1. Housing: Copper.

2. O-Rings and Pipe Stops: EPDM.

3. Tools: Manufacturer's special tools.

4. Minimum 200-psig working-pressure rating at 250 deg F.

F. Copper, Mechanically Formed Tee Option: For forming T-branch on copper water tube.

G. Wrought-Copper Unions: ASME B16.22.

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2.3 STEEL PIPE AND FITTINGS

A. Steel Pipe: ASTM A 53/A 53M, black steel with plain ends; welded and seamless, Grade B, and

wall thickness as indicated in "Piping Applications" Article.

B. Cast-Iron Threaded Fittings: ASME B16.4; Classes 125 and 250 as indicated in "Piping

Applications" Article.

C. Malleable-Iron Threaded Fittings: ASME B16.3, Classes 150 and 300 as indicated in "Piping

Applications" Article.

D. Malleable-Iron Unions: ASME B16.39; Classes 150, 250, and 300 as indicated in "Piping

Applications" Article.

E. Cast-Iron Pipe Flanges and Flanged Fittings: ASME B16.1, Classes 25, 125, and 250; raised

ground face, and bolt holes spot faced as indicated in "Piping Applications" Article.

F. Wrought-Steel Fittings: ASTM A 234/A 234M, wall thickness to match adjoining pipe.

G. Wrought Cast- and Forged-Steel Flanges and Flanged Fittings: ASME B16.5, including bolts,

nuts, and gaskets of the following material group, end connections, and facings:

1. Material Group: 1.1.

2. End Connections: Butt welding.

3. Facings: Raised face.

H. Grooved Mechanical-Joint Fittings and Couplings:

1. Joint Fittings: ASTM A 536, Grade 65-45-12 ductile iron; ASTM A 47/A 47M,

Grade 32510 malleable iron; ASTM A 53/A 53M, Type F, E, or S, Grade B fabricated

steel; or ASTM A 106/A 106M, Grade B steel fittings with grooves or shoulders

constructed to accept grooved-end couplings; with nuts, bolts, locking pin, locking

toggle, or lugs to secure grooved pipe and fittings.

2. Couplings: Ductile- or malleable-iron housing and [EPDM] [or] [nitrile] gasket of

central cavity pressure-responsive design; with nuts, bolts, locking pin, locking toggle, or

lugs to secure grooved pipe and fittings.

I. Steel Pressure-Seal Fittings:

1. Housing: Steel.

2. O-Rings and Pipe Stop: EPDM.

3. Tools: Manufacturer's special tool.

4. Minimum 300-psig working-pressure rating at 230 deg F.

J. Steel Pipe Nipples: ASTM A 733, made of same materials and wall thicknesses as pipe in

which they are installed.

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2.4 PLASTIC PIPE AND FITTINGS

A. CPVC Plastic Pipe: ASTM F 441/F 441M, with wall thickness as indicated in "Piping

Applications" Article.

1. CPVC Plastic Pipe Fittings: Socket-type pipe fittings, ASTM F 438 for Schedule 40 pipe;

ASTM F 439 for Schedule 80 pipe.

B. PVC Plastic Pipe: ASTM D 1785, with wall thickness as indicated in "Piping Applications"

Article.

1. PVC Plastic Pipe Fittings: Socket-type pipe fittings, ASTM D 2466 for Schedule 40 pipe;

ASTM D 2467 for Schedule 80 pipe.

2.5 FIBERGLASS PIPE AND FITTINGS

A. RTRP: ASTM D 2996, filament-wound pipe with tapered bell and spigot ends for adhesive

joints.

B. RTRF: Compression or spray-up/contact molded of same material, pressure class, and joining

method as pipe.

C. Flanges: ASTM D 4024. Full-face gaskets suitable for the service, minimum 1/8-inch thick, 60-

70 durometer. ASTM A 307, Grade B, hex head bolts with washers.

2.6 JOINING MATERIALS

A. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system

contents.

1. ASME B16.21, nonmetallic, flat, asbestos free, 1/8-inch maximum thickness unless

otherwise indicated.

a. Full-Face Type: For flat-face, Class 125, cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250, cast-iron and steel flanges.

B. Flange Bolts and Nuts: ASME B18.2.1, carbon steel, unless otherwise indicated.

C. Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and material recommended by piping system

manufacturer unless otherwise indicated.

D. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to

ASTM B 813.

E. Brazing Filler Metals: AWS A5.8/A5.8M, BCuP Series, copper-phosphorus alloys for joining

copper with copper; or BAg-1, silver alloy for joining copper with bronze or steel.

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F. Welding Filler Metals: Comply with AWS D10.12M/D10.12 for welding materials appropriate

for wall thickness and chemical analysis of steel pipe being welded.

G. Solvent Cements for Joining Plastic Piping:

1. CPVC Piping: ASTM F 493.

a. CPVC solvent cement shall have a VOC content of 490 g/L or less.

b. Adhesive primer shall have a VOC content of 550 g/L or less.

c. Solvent cement and adhesive primer shall comply with the testing and product

requirements of the California Department of Public Health's (formerly, the

California Health Services') "Standard Method for the Testing and Evaluation of

Volatile Organic Chemical Emissions from Indoor Sources Using Environmental

Chambers."

2. PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.

a. PVC solvent cement shall have a VOC content of 510 g/L or less.

b. Adhesive primer shall have a VOC content of 550 g/L or less.

c. Solvent cement and adhesive primer shall comply with the testing and product

requirements of the California Department of Public Health's (formerly, the

California Health Services') "Standard Method for the Testing and Evaluation of

Volatile Organic Chemical Emissions from Indoor Sources Using Environmental

Chambers."

H. Fiberglass Pipe Adhesive: As furnished or recommended by pipe manufacturer.

1. Fiberglass adhesive shall have a VOC content of 80 g/L or less.

2. Adhesive shall comply with the testing and product requirements of the California

Department of Public Health's (formerly, the California Health Services') "Standard

Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from

Indoor Sources Using Environmental Chambers."

I. Gasket Material: Thickness, material, and type suitable for fluid to be handled and working

temperatures and pressures.

2.7 TRANSITION FITTINGS

A. Plastic-to-Metal Transition Fittings:

1. One-piece fitting with one threaded brass or copper insert and one solvent-cement-joint

end of material and wall thickness to match plastic pipe material.

B. Plastic-to-Metal Transition Unions:

1. Brass or copper end, solvent-cement-joint end of material and wall thickness to match

plastic pipe material, rubber gasket, and threaded union.

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2.8 DIELECTRIC FITTINGS

A. General Requirements: Assembly of copper alloy and ferrous materials with separating

nonconductive insulating material. Include end connections compatible with pipes to be joined.

B. Dielectric Unions:

1. Description:

a. Standard: ASSE 1079.

b. Pressure Rating: [125 psig minimum at 180 deg F] [150 psig] [250 psig].

c. End Connections: Solder-joint copper alloy and threaded ferrous.

C. Dielectric Flanges:

1. Description:

a. Standard: ASSE 1079.

b. Factory-fabricated, bolted, companion-flange assembly.

c. Pressure Rating: [125 psig minimum at 180 deg F] [150 psig] [175 psig] [300

psig].

d. End Connections: Solder-joint copper alloy and threaded ferrous; threaded solder-

joint copper alloy and threaded ferrous.

D. Dielectric-Flange Insulating Kits:

1. Description:

a. Nonconducting materials for field assembly of companion flanges.

b. Pressure Rating: 150 psig.

c. Gasket: Neoprene or phenolic.

d. Bolt Sleeves: Phenolic or polyethylene.

e. Washers: Phenolic with steel backing washers.

E. Dielectric Nipples:

1. Description:

a. Standard: IAPMO PS 66.

b. Electroplated steel nipple, complying with ASTM F 1545.

c. Pressure Rating: 300 psig at 225 deg F.

d. End Connections: Male threaded or grooved.

e. Lining: Inert and noncorrosive, propylene.

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2.9 BYPASS CHEMICAL FEEDER

A. Description: Welded steel construction; 125-psig working pressure; 5-gal. capacity; with fill

funnel and inlet, outlet, and drain valves.

1. Chemicals: Specially formulated, based on analysis of makeup water, to prevent

accumulation of scale and corrosion in piping and connected equipment.

PART 3 - EXECUTION

3.1 PIPING APPLICATIONS

A. Hot-water heating piping, aboveground, NPS 2 and smaller, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] [pressure-seal] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20], Grade B, Type 96 steel pipe; [Class 125,

cast-iron] [Class 150, malleable-iron] [Class 250, cast-iron] [Class 300, malleable-

iron] fittings; cast-iron flanges and flange fittings; and threaded joints.

3. Schedule 5 steel pipe; steel, pressure-seal couplings and fittings; and pressure-seal joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

B. Hot-water heating piping, aboveground, NPS 2-1/2 and larger, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe, wrought-steel fittings and

wrought-cast or forged-steel flanges and flange fittings, and welded and flanged joints.

3. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; grooved, mechanical joint

coupling and fittings; and grooved, mechanical joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

5. RTRP and RTRF with adhesive or flanged joints.

C. Hot-water heating piping installed belowground and within slabs shall be[ either of] the

following:

1. Type K, annealed-temper copper tubing, wrought-copper fittings, and [soldered]

[brazed] joints. Use the fewest possible joints.

2. RTRP and RTRF with adhesive or flanged joints.

D. Chilled-water piping, aboveground, NPS 2 and smaller, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] [pressure-seal] joints.

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2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; [Class 125, cast-iron]

[Class 150, malleable-iron] [Class 250, cast-iron] [Class 300, malleable-iron] fittings;

cast-iron flanges and flange fittings; and threaded joints.

3. Schedule 5 steel pipe; steel, pressure-seal couplings and fittings; and pressure-seal joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

E. Chilled-water piping, aboveground, NPS 2-1/2 and larger, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe, wrought-steel fittings and

wrought-cast or forged-steel flanges and flange fittings, and welded and flanged joints.

3. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; grooved, mechanical joint

coupling and fittings; and grooved, mechanical joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

5. RTRP and RTRF with adhesive or flanged joints.

F. Chilled-water piping installed belowground and within slabs shall be[ either of] the following:

1. Type K, annealed-temper copper tubing, wrought-copper fittings, and [soldered]

[brazed] joints. Use the fewest possible joints.

2. RTRP and RTRF with adhesive or flanged joints.

G. Dual-temperature heating and cooling water piping, aboveground, NPS 2 and smaller, shall

be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] [pressure-seal] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; [Class 125, cast-iron]

[Class 150, malleable-iron] [Class 250, cast-iron] [Class 300, malleable-iron] fittings;

cast-iron flanges and flange fittings; and threaded joints.

3. Schedule 5 steel pipe; steel, pressure-seal couplings and fittings; and pressure-seal joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

H. Dual-temperature heating and cooling water piping, aboveground, NPS 2-1/2 and larger, shall

be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe, wrought-steel fittings and

wrought-cast or forged-steel flanges and flange fittings, and welded and flanged joints.

3. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; grooved, mechanical joint

coupling and fittings; and grooved, mechanical joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

5. RTRP and RTRF with adhesive or flanged joints.

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I. Dual-temperature heating and cooling water piping installed belowground and within slabs shall

be[ either of] the following:

1. Type K, annealed-temper copper tubing, wrought-copper fittings, and [soldered]

[brazed] joints. Use the fewest possible joints.

2. RTRP and RTRF with adhesive or flanged joints.

J. Condenser-water piping, aboveground, NPS 2 and smaller, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] [pressure-seal] joints.

2. [Schedule 80] [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; [Class 125, cast-

iron] [Class 150, malleable-iron] [Class 250, cast-iron] [Class 300, malleable-iron]

fittings; cast-iron flanges and flange fittings; and threaded joints.

3. Schedule 5 steel pipe; steel, pressure-seal couplings and fittings; and pressure-seal joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

K. Condenser-water piping, aboveground, NPS 2-1/2 and larger, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] joints.

2. [Schedule 80] [Schedule 40] [Schedule 30] [Schedule 20] steel pipe, wrought-steel

fittings and wrought-cast or forged-steel flanges and flange fittings, and welded and

flanged joints.

3. [Schedule 80] [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; grooved,

mechanical joint coupling and fittings; and grooved, mechanical joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

5. RTRP and RTRF with adhesive or flanged joints.

L. Condenser-water piping installed belowground and within slabs shall be[ either of] the

following:

1. Type K, annealed-temper copper tubing, wrought-copper fittings, and [soldered]

[brazed] joints. Use the fewest possible joints.

2. RTRP and RTRF with adhesive or flanged joints.

M. Glycol cooling-water piping, aboveground, NPS 2 and smaller, shall be[ any of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] [pressure-seal] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; [Class 125, cast-iron]

[Class 150, malleable-iron] [Class 250, cast-iron] [Class 300, malleable-iron] fittings;

cast-iron flanges and flange fittings; and threaded joints.

3. Schedule 5 steel pipe; steel, pressure-seal couplings and fittings; and pressure-seal joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

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N. Glycol cooling-water piping, aboveground, NPS 2-1/2 and larger, shall be[ any of] the

following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] joints.

2. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe, wrought-steel fittings and

wrought-cast or forged-steel flanges and flange fittings, and welded and flanged joints.

3. [Schedule 40] [Schedule 30] [Schedule 20] steel pipe; grooved, mechanical joint

coupling and fittings; and grooved, mechanical joints.

4. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings and solvent-welded joints.

5. RTRP and RTRF with adhesive or flanged joints.

O. Glycol cooling-water piping installed belowground and within slabs shall be[ either of] the

following:

1. Type K, annealed-temper copper tubing, wrought-copper fittings, and [soldered]

[brazed] joints. Use the fewest possible joints.

2. RTRP and RTRF with adhesive or flanged joints.

P. Makeup-water piping installed aboveground shall be[ either of] the following:

1. [Type L] [Type M], drawn-temper copper tubing, wrought-copper fittings, and

[soldered] [brazed] joints.

2. [Schedule 40] [Schedule 80] CPVC plastic pipe and fittings, and solvent-welded joints.

Q. Makeup-Water Piping Installed Belowground and within Slabs: Type K, annealed-temper

copper tubing, wrought-copper fittings, and soldered joints. Use the fewest possible joints.

R. Condensate-Drain Piping: [Type M] [Type DWV], drawn-temper copper tubing, wrought-

copper fittings, and soldered joints[ or Schedule 40 PVC plastic pipe and fittings and

solvent-welded joints].

S. Condensate-Drain Piping: Schedule 40 PVC plastic pipe and fittings and solvent-welded joints.

T. Blowdown-Drain Piping: Same materials and joining methods as for piping specified for the

service in which blowdown drain is installed.

U. Air-Vent Piping:

1. Inlet: Same as service where installed with metal-to-plastic transition fittings for plastic

piping systems according to piping manufacturer's written instructions.

2. Outlet: Type K, annealed-temper copper tubing with soldered or flared joints.

V. Safety-Valve-Inlet and -Outlet Piping for Hot-Water Piping: Same materials and joining

methods as for piping specified for the service in which safety valve is installed with metal-to-

plastic transition fittings for plastic piping systems according to piping manufacturer's written

instructions.

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3.2 PIPING INSTALLATIONS

A. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping

systems. Install piping as indicated unless deviations to layout are approved on Coordination

Drawings.

B. Install piping in concealed locations unless otherwise indicated and except in equipment rooms

and service areas.

C. Install piping indicated to be exposed and piping in equipment rooms and service areas at right

angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated

otherwise.

D. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.

E. Install piping to permit valve servicing.

F. Install piping at indicated slopes.

G. Install piping free of sags and bends.

H. Install fittings for changes in direction and branch connections.

I. Install piping to allow application of insulation.

J. Select system components with pressure rating equal to or greater than system operating

pressure.

K. Install groups of pipes parallel to each other, spaced to permit applying insulation and servicing

of valves.

L. Install drains, consisting of a tee fitting, NPS 3/4 ball valve, and short NPS 3/4 threaded nipple

with cap, at low points in piping system mains and elsewhere as required for system drainage.

M. Install piping at a uniform grade of 0.2 percent upward in direction of flow.

N. Reduce pipe sizes using eccentric reducer fitting installed with level side up.

O. Install branch connections to mains using [mechanically formed ]tee fittings in main pipe, with

the branch connected to the bottom of the main pipe. For up-feed risers, connect the branch to

the top of the main pipe.

P. Install valves according to Section 230523.11 "Globe Valves for HVAC Piping,"

Section 230523.12 "Ball Valves for HVAC Piping," Section 230523.13 "Butterfly Valves for

HVAC Piping," Section 230523.14 "Check Valves for HVAC Piping," and Section 230523.15

"Gate Valves for HVAC Piping."

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Q. Install unions in piping, NPS 2 and smaller, adjacent to valves, at final connections of

equipment, and elsewhere as indicated.

R. Install flanges in piping, NPS 2-1/2 and larger, at final connections of equipment and elsewhere

as indicated.

S. Install shutoff valve immediately upstream of each dielectric fitting.

T. Comply with requirements in Section 230516 "Expansion Fittings and Loops for HVAC

Piping" for installation of expansion loops, expansion joints, anchors, and pipe alignment

guides.

U. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment"

for identifying piping.

V. Install sleeves for piping penetrations of walls, ceilings, and floors. Comply with requirements

for sleeves specified in Section 230517 "Sleeves and Sleeve Seals for HVAC Piping."

W. Install sleeve seals for piping penetrations of concrete walls and slabs. Comply with

requirements for sleeve seals specified in Section 230517 "Sleeves and Sleeve Seals for HVAC

Piping."

X. Install escutcheons for piping penetrations of walls, ceilings, and floors. Comply with

requirements for escutcheons specified in Section 230518 "Escutcheons for HVAC Piping."

3.3 DIELECTRIC FITTING INSTALLATION

A. Install dielectric fittings in piping at connections of dissimilar metal piping and tubing.

B. Dielectric Fittings for NPS 2 and Smaller: Use dielectric [nipples] [unions].

C. Dielectric Fittings for NPS 2-1/2 to NPS 4: Use dielectric [flanges] [flange kits] [nipples].

D. Dielectric Fittings for NPS 5 and Larger: Use dielectric flange kits.

3.4 HANGERS AND SUPPORTS

A. Comply with requirements in Section 230529 "Hangers and Supports for HVAC Piping and

Equipment" for hanger, support, and anchor devices. Comply with the following requirements

for maximum spacing of supports.

B. Comply with requirements in Section 230548 "Vibration and Seismic Controls for HVAC" for

seismic restraints.

C. Install the following pipe attachments:

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1. Adjustable steel clevis hangers for individual horizontal piping less than 20 feet long.

2. Adjustable roller hangers and spring hangers for individual horizontal piping 20 feet or

longer.

3. Pipe Roller: MSS SP-58, Type 44 for multiple horizontal piping 20 feet or longer,

supported on a trapeze.

4. Spring hangers to support vertical runs.

5. Provide copper-clad hangers and supports for hangers and supports in direct contact with

copper pipe.

6. On plastic pipe, install pads or cushions on bearing surfaces to prevent hanger from

scratching pipe.

D. Install hangers for steel piping with the following maximum spacing and minimum rod sizes:

1. NPS 3/4: Maximum span, 7 feet.

2. NPS 1: Maximum span, 7 feet.

3. NPS 1-1/2: Maximum span, 9 feet.

4. NPS 2: Maximum span, 10 feet.

5. NPS 2-1/2: Maximum span, 11 feet.

6. NPS 3 and Larger: Maximum span, 12 feet.

E. Install hangers for drawn-temper copper piping with the following maximum spacing and

minimum rod sizes:

1. NPS 3/4: Maximum span, 5 feet; minimum rod size, 1/4 inch.

2. NPS 1: Maximum span, 6 feet; minimum rod size, 1/4 inch.

3. NPS 1-1/4Maximum span, 7 feet; minimum rod size, 3/8 inch.

4. NPS 1-1/2: Maximum span, 8 feet; minimum rod size, 3/8 inch.

5. NPS 2: Maximum span, 8 feet; minimum rod size, 3/8 inch.

6. NPS 2-1/2: Maximum span, 9 feet; minimum rod size, 3/8 inch.

7. NPS 3 and Larger: Maximum span, 10 feet; minimum rod size, 3/8 inch.

F. Plastic Piping Hanger Spacing: Space hangers according to pipe manufacturer's written

instructions for service conditions. Avoid point loading. Space and install hangers with the

fewest practical rigid anchor points.

G. Fiberglass Piping Hanger Spacing: Space hangers according to pipe manufacturer's written

instructions for service conditions. Avoid point loading. Space and install hangers with the

fewest practical rigid anchor points.

H. Support vertical runs at roof, at each floor, and at 10-foot intervals between floors.

3.5 PIPE JOINT CONSTRUCTION

A. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

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B. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before

assembly.

C. Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube

end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using

lead-free solder alloy complying with ASTM B 32.

D. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube"

Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8/A5.8M.

E. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut

threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore

full ID. Join pipe fittings and valves as follows:

1. Apply appropriate tape or thread compound to external pipe threads unless dry seal

threading is specified.

2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or

damaged. Do not use pipe sections that have cracked or open welds.

F. Welded Joints: Construct joints according to AWS D10.12M/D10.12, using qualified processes

and welding operators according to "Quality Assurance" Article.

G. Flanged Joints: Select appropriate gasket material, size, type, and thickness for service

application. Install gasket concentrically positioned. Use suitable lubricants on bolt threads.

H. Plastic Piping Solvent-Cemented Joints: Clean and dry joining surfaces. Join pipe and fittings

according to the following:

1. Comply with ASTM F 402 for safe-handling practice of cleaners, primers, and solvent

cements.

2. CPVC Piping: Join according to ASTM D 2846/D 2846M Appendix.

3. PVC Pressure Piping: Join ASTM D 1785 schedule number, PVC pipe and PVC socket

fittings according to ASTM D 2672. Join other-than-schedule number PVC pipe and

socket fittings according to ASTM D 2855.

4. PVC Nonpressure Piping: Join according to ASTM D 2855.

I. Fiberglass Bonded Joints: Prepare pipe ends and fittings, apply adhesive, and join according to

pipe manufacturer's written instructions.

J. Grooved Joints: Assemble joints with coupling and gasket, lubricant, and bolts. Cut or roll

grooves in ends of pipe based on pipe and coupling manufacturer's written instructions for pipe

wall thickness. Use grooved-end fittings and rigid, grooved-end-pipe couplings.

K. Mechanically Formed, Copper-Tube-Outlet Joints: Use manufacturer-recommended tool and

procedure, and brazed joints.

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L. Pressure-Sealed Joints: Use manufacturer-recommended tool and procedure. Leave insertion

marks on pipe after assembly.

3.6 TERMINAL EQUIPMENT CONNECTIONS

A. Sizes for supply and return piping connections shall be the same as or larger than equipment

connections.

B. Install control valves in accessible locations close to connected equipment.

C. Install bypass piping with globe valve around control valve. If parallel control valves are

installed, only one bypass is required.

D. Install ports for pressure gages and thermometers at coil inlet and outlet connections. Comply

with requirements in Section 230519 "Meters and Gages for HVAC Piping."

3.7 CHEMICAL TREATMENT

A. Perform an analysis of makeup water to determine type and quantities of chemical treatment

needed to keep system free of scale, corrosion, and fouling, and to sustain the following water

characteristics:

1. pH: 9.0 to 10.5.

2. "P" Alkalinity: 100 to 500 ppm.

3. Boron: 100 to 200 ppm.

4. Chemical Oxygen Demand: Maximum of 100 ppm. Revise this value if closed system

contains glycol.

5. Corrosion Inhibitor:

a. Sodium Nitrate: 1000 to 1500 ppm.

b. Molybdate: 200 to 300 ppm.

c. Chromate: 200 to 300 ppm.

d. Sodium Nitrate Plus Molybdate: 100 to 200 ppm each.

e. Chromate Plus Molybdate: 50 to 100 ppm each.

6. Soluble Copper: Maximum of 0.20 ppm.

7. Tolyiriazole Copper and Yellow Metal Corrosion Inhibitor: Minimum of 10 ppm.

8. Total Suspended Solids: Maximum of 10 ppm.

9. Ammonia: Maximum of 20 ppm.

10. Free Caustic Alkalinity: Maximum of 20 ppm.

11. Microbiological Limits:

a. Total Aerobic Plate Count: Maximum of 1000 organisms/mL.

b. Total Anaerobic Plate Count: Maximum of 100 organisms/mL.

c. Nitrate Reducers: 100 organisms/mL.

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d. Sulfate Reducers: Maximum of zero organisms/mL.

e. Iron Bacteria: Maximum of zero organisms/mL.

B. Install bypass chemical feeders in each hydronic system where indicated.

1. Install in upright position with top of funnel not more than 48 inches above the floor.

2. Install feeder in minimum NPS 3/4 bypass line, from main with full-size, full-port, ball

valve in the main between bypass connections.

3. Install NPS 3/4 pipe from chemical feeder drain to nearest equipment drain and include a

full-size, full-port, ball valve.

C. Fill system with fresh water and add liquid alkaline compound with emulsifying agents and

detergents to remove grease and petroleum products from piping. Circulate solution for a

minimum of 24 hours, drain, clean strainer screens, and refill with fresh water.

D. Add initial chemical treatment and maintain water quality in ranges noted above for the first

year of operation.

E. Fill systems that have antifreeze or glycol solutions with the following concentrations:

1. Hot-Water Heating Piping: Minimum of <Insert number> percent [ethylene]

[propylene] glycol.

2. Chilled-Water Piping: Minimum of <Insert number> percent [ethylene] [propylene]

glycol.

3. Dual-Temperature Heating and Cooling Water Piping: Minimum of <Insert number>

percent [ethylene] [propylene] glycol.

4. Glycol Cooling-Water Piping: Minimum of <Insert number> percent [ethylene]

[propylene] glycol.

3.8 FIELD QUALITY CONTROL

A. Prepare hydronic piping according to ASME B31.9 and as follows:

1. Leave joints, including welds, uninsulated and exposed for examination during test.

2. Provide temporary restraints for expansion joints that cannot sustain reactions due to test

pressure. If temporary restraints are impractical, isolate expansion joints from testing.

3. Flush hydronic piping systems with clean water; then remove and clean or replace

strainer screens.

4. Isolate equipment from piping. If a valve is used to isolate equipment, its closure shall be

capable of sealing against test pressure without damage to valve. Install blinds in flanged

joints to isolate equipment.

5. Install safety valve, set at a pressure no more than one-third higher than test pressure, to

protect against damage by expanding liquid or other source of overpressure during test.

B. Perform the following tests on hydronic piping:

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1. Use ambient temperature water as a testing medium unless there is risk of damage due to

freezing. Another liquid that is safe for workers and compatible with piping may be used.

2. While filling system, use vents installed at high points of system to release air. Use drains

installed at low points for complete draining of test liquid.

3. Isolate expansion tanks and determine that hydronic system is full of water.

4. Subject piping system to hydrostatic test pressure that is not less than 1.5 times the

system's working pressure. Test pressure shall not exceed maximum pressure for any

vessel, pump, valve, or other component in system under test. Verify that stress due to

pressure at bottom of vertical runs does not exceed 90 percent of specified minimum

yield strength or 1.7 times the "SE" value in Appendix A in ASME B31.9, "Building

Services Piping."

5. After hydrostatic test pressure has been applied for at least 10 minutes, examine piping,

joints, and connections for leakage. Eliminate leaks by tightening, repairing, or replacing

components, and repeat hydrostatic test until there are no leaks.

6. Prepare written report of testing.

C. Perform the following before operating the system:

1. Open manual valves fully.

2. Inspect pumps for proper rotation.

3. Set makeup pressure-reducing valves for required system pressure.

4. Inspect air vents at high points of system and determine if all are installed and operating

freely (automatic type), or bleed air completely (manual type).

5. Set temperature controls so all coils are calling for full flow.

6. Inspect and set operating temperatures of hydronic equipment, such as boilers, chillers,

cooling towers, to specified values.

7. Verify lubrication of motors and bearings.

END OF SECTION 232113

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SECTION 233113 - METAL DUCTS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Single-wall rectangular ducts and fittings.

2. Double-wall rectangular ducts and fittings.

3. Single-wall round[ and flat-oval] ducts and fittings.

4. Double-wall round[ and flat-oval] ducts and fittings.

5. Sheet metal materials.

6. Duct liner.

7. Sealants and gaskets.

8. Hangers and supports.

9. Seismic-restraint devices.

B. Related Sections:

1. Section 230593 "Testing, Adjusting, and Balancing for HVAC" for testing, adjusting, and

balancing requirements for metal ducts.

2. Section 233116 "Nonmetal Ducts" for fibrous-glass ducts, thermoset fiber-reinforced

plastic ducts, thermoplastic ducts, PVC ducts, and concrete ducts.

3. Section 233119 "HVAC Casings" for factory- and field-fabricated casings for mechanical

equipment.

4. Section 233300 "Air Duct Accessories" for dampers, sound-control devices, duct-

mounting access doors and panels, turning vanes, and flexible ducts.

1.3 PERFORMANCE REQUIREMENTS

A. Delegated Duct Design: Duct construction, including sheet metal thicknesses, seam and joint

construction, reinforcements, and hangers and supports, shall comply with SMACNA's "HVAC

Duct Construction Standards - Metal and Flexible" and performance requirements and design

criteria indicated in "Duct Schedule" Article.

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B. Structural Performance: Duct hangers and supports shall withstand the effects of gravity loads

and stresses within limits and under conditions described in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible" [and] [ASCE/SEI 7.]

1. Seismic Hazard Level A: Seismic force to weight ratio, 0.48.

2. Seismic Hazard Level B: Seismic force to weight ratio, 0.30.

3. Seismic Hazard Level C: Seismic force to weight ratio, 0.15.

C. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in

ASHRAE 62.1.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of the following products:

1. Liners and adhesives.

2. Sealants and gaskets.

3. Seismic-restraint devices.

B. Shop Drawings:

1. Fabrication, assembly, and installation, including plans, elevations, sections, components,

and attachments to other work.

2. Factory- and shop-fabricated ducts and fittings.

3. Duct layout indicating sizes, configuration, liner material, and static-pressure classes.

4. Elevation of top of ducts.

5. Dimensions of main duct runs from building grid lines.

6. Fittings.

7. Reinforcement and spacing.

8. Seam and joint construction.

9. Penetrations through fire-rated and other partitions.

10. Equipment installation based on equipment being used on Project.

11. Locations for duct accessories, including dampers, turning vanes, and access doors and

panels.

12. Hangers and supports, including methods for duct and building attachment and vibration

isolation.

C. Delegated-Design Submittal:

1. Sheet metal thicknesses.

2. Joint and seam construction and sealing.

3. Reinforcement details and spacing.

4. Materials, fabrication, assembly, and spacing of hangers and supports.

5. Design Calculations: Calculations[, including analysis data signed and sealed by the

qualified professional engineer responsible for their preparation] for selecting

hangers and supports.

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1.5 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Plans, drawn to scale, on which the following items are shown and

coordinated with each other, using input from installers of the items involved:

1. Duct installation in congested spaces, indicating coordination with general construction,

building components, and other building services. Indicate proposed changes to duct

layout.

2. Suspended ceiling components.

3. Structural members to which duct will be attached.

4. Size and location of initial access modules for acoustical tile.

5. Penetrations of smoke barriers and fire-rated construction.

6. Items penetrating finished ceiling including the following:

a. Lighting fixtures.

b. Air outlets and inlets.

c. Speakers.

d. Sprinklers.

e. Access panels.

f. Perimeter moldings.

B. Welding certificates.

C. Field quality-control reports.

1.6 QUALITY ASSURANCE

A. Welding Qualifications: Qualify procedures and personnel according to [AWS D1.1/D1.1M,

"Structural Welding Code - Steel," for hangers and supports.] [AWS D1.2/D1.2M,

"Structural Welding Code - Aluminum," for aluminum supports.] [AWS D9.1M/D9.1,

"Sheet Metal Welding Code," for duct joint and seam welding.]

B. Welding Qualifications: Qualify procedures and personnel according to the following:

1. AWS D1.1/D1.1M, "Structural Welding Code - Steel," for hangers and supports.

2. AWS D1.2/D1.2M, "Structural Welding Code - Aluminum," for aluminum supports.

3. AWS D9.1M/D9.1, "Sheet Metal Welding Code," for duct joint and seam welding.

C. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and

Equipment" and Section 7 - "Construction and System Start-up."

D. ASHRAE/IESNA Compliance: Applicable requirements in ASHRAE/IESNA 90.1,

Section 6.4.4 - "HVAC System Construction and Insulation."

E. Mockups:

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1. Before installing duct systems, build mockups representing static-pressure classes in

excess of 3-inch wg. Build mockups to comply with the following requirements, using

materials indicated for the completed Work:

a. Five transverse joints.

b. One access door(s).

c. Two typical branch connections, each with at least one elbow.

d. Two typical flexible duct or flexible-connector connections for each duct and

apparatus.

e. One 90-degree turn(s) with turning vanes.

f. One fire damper(s).

g. Perform leakage tests specified in "Field Quality Control" Article. Revise mockup

construction and perform additional tests as required to achieve specified minimum

acceptable results.

2. Approved mockups may become part of the completed Work if undisturbed at time of

Substantial Completion.

PART 2 - PRODUCTS

2.1 SINGLE-WALL RECTANGULAR DUCTS AND FITTINGS

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible" based on indicated static-pressure class unless otherwise

indicated.

B. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-1, "Rectangular Duct/Transverse

Joints," for static-pressure class, applicable sealing requirements, materials involved, duct-

support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

C. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-2, "Rectangular Duct/Longitudinal

Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-

support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

D. Elbows, Transitions, Offsets, Branch Connections, and Other Duct Construction: Select types

and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Chapter 4, "Fittings and Other Construction," for static-pressure class, applicable

sealing requirements, materials involved, duct-support intervals, and other provisions in

SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

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2.2 DOUBLE-WALL RECTANGULAR DUCTS AND FITTINGS

A. Rectangular Ducts: Fabricate ducts with indicated dimensions for the inner duct.

B. Outer Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible" based on indicated static-pressure class unless otherwise indicated.

C. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-1, "Rectangular Duct/Transverse

Joints," for static-pressure class, applicable sealing requirements, materials involved, duct-

support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

D. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-2, "Rectangular Duct/Longitudinal

Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-

support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

E. Interstitial Insulation: Fibrous-glass liner complying with ASTM C 1071, NFPA 90A, or

NFPA 90B; and with NAIMA AH124, "Fibrous Glass Duct Liner Standard."

1. Maximum Thermal Conductivity: 0.27 Btu x in./h x sq. ft. x deg F at 75 deg F mean

temperature.

2. Install spacers that position the inner duct at uniform distance from outer duct without

compressing insulation.

3. Coat insulation with antimicrobial coating.

4. Cover insulation with polyester film complying with UL 181, Class 1.

F. Interstitial Insulation: Flexible elastomeric duct liner complying with ASTM C 534, Type II for

sheet materials, and with NFPA 90A or NFPA 90B.

1. Maximum Thermal Conductivity: 0.25 Btu x in./h x sq. ft. x deg F at 75 deg F mean

temperature.

G. Inner Duct: Minimum 0.028-inch [perforated galvanized sheet steel having 3/32-inch-

diameter perforations, with overall open area of 23 percent] [solid sheet steel].

H. Formed-on Transverse Joints (Flanges): Select joint types and fabricate according to

SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 2-1,

"Rectangular Duct/Traverse Joints," for static-pressure class, applicable sealing requirements,

materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible."

I. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 2-2, "Rectangular Duct/Longitudinal

Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-

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support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible."

2.3 SINGLE-WALL ROUND[ AND FLAT-OVAL] DUCTS AND FITTINGS

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible," Chapter 3, "Round, Oval, and Flexible Duct," based on

indicated static-pressure class unless otherwise indicated.

B. Flat-Oval Ducts: Indicated dimensions are the duct width (major dimension) and diameter of the

round sides connecting the flat portions of the duct (minor dimension).

C. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-1, "Round Duct Transverse Joints," for

static-pressure class, applicable sealing requirements, materials involved, duct-support intervals,

and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible."

1. Transverse Joints in Ducts Larger Than 60 Inches in Diameter: Flanged.

D. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams,"

for static-pressure class, applicable sealing requirements, materials involved, duct-support

intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible."

1. Fabricate round ducts larger than 90 inches in diameter with butt-welded longitudinal

seams.

2. Fabricate flat-oval ducts larger than 72 inches in width (major dimension) with butt-

welded longitudinal seams.

E. Tees and Laterals: Select types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and

Figure 3-6, "Conical Tees," for static-pressure class, applicable sealing requirements, materials

involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible."

2.4 DOUBLE-WALL ROUND[ AND FLAT-OVAL] DUCTS AND FITTINGS

A. Flat-Oval Ducts: Indicated dimensions are the duct width (major dimension) and diameter of the

round sides connecting the flat portions of the duct (minor dimension) of the inner duct.

B. Outer Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Chapter 3, "Round, Oval, and Flexible Duct," based on static-pressure class unless

otherwise indicated.

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1. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-1, "Round Duct Transverse

Joints," for static-pressure class, applicable sealing requirements, materials involved,

duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible."

a. Transverse Joints in Ducts Larger Than 60 Inches in Diameter: Flanged.

2. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC

Duct Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct

Longitudinal Seams," for static-pressure class, applicable sealing requirements, materials

involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible."

a. Fabricate round ducts larger than 90 inches in diameter with butt-welded

longitudinal seams.

b. Fabricate flat-oval ducts larger than 72 inches in width (major dimension) with

butt-welded longitudinal seams.

3. Tees and Laterals: Select types and fabricate according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals,"

and Figure 3-6, "Conical Tees," for static-pressure class, applicable sealing requirements,

materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC

Duct Construction Standards - Metal and Flexible."

C. Inner Duct: Minimum 0.028-inch [perforated galvanized sheet steel having 3/32-inch-

diameter perforations, with overall open area of 23 percent] [solid sheet steel].

D. Interstitial Insulation: Fibrous-glass liner complying with ASTM C 1071, NFPA 90A, or

NFPA 90B; and with NAIMA AH124, "Fibrous Glass Duct Liner Standard."

1. Maximum Thermal Conductivity: 0.27 Btu x in./h x sq. ft. x deg F at 75 deg F mean

temperature.

2. Install spacers that position the inner duct at uniform distance from outer duct without

compressing insulation.

3. Coat insulation with antimicrobial coating.

4. Cover insulation with polyester film complying with UL 181, Class 1.

E. Interstitial Insulation: Flexible elastomeric duct liner complying with ASTM C 534, Type II for

sheet materials, and with NFPA 90A or NFPA 90B.

1. Maximum Thermal Conductivity: 0.25 Btu x in./h x sq. ft. x deg F at75 deg F mean

temperature.

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2.5 SHEET METAL MATERIALS

A. General Material Requirements: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible" for acceptable materials, material thicknesses, and duct

construction methods unless otherwise indicated. Sheet metal materials shall be free of pitting,

seam marks, roller marks, stains, discolorations, and other imperfections.

B. Galvanized Sheet Steel: Comply with ASTM A 653/A 653M.

1. Galvanized Coating Designation: [G60] [G90].

2. Finishes for Surfaces Exposed to View: Mill phosphatized.

C. PVC-Coated, Galvanized Sheet Steel: Comply with ASTM A 653/A 653M.

1. Galvanized Coating Designation: [G60] [G90].

2. Minimum Thickness for Factory-Applied PVC Coating: 4 mils thick[ on sheet metal

surface of ducts and fittings exposed to corrosive conditions, and minimum 1 mil

thick on opposite surface].

3. Coating Materials: Acceptable to authorities having jurisdiction for use on ducts listed

and labeled by an NRTL for compliance with UL 181, Class 1.

D. Carbon-Steel Sheets: Comply with ASTM A 1008/A 1008M, with oiled, matte finish for

exposed ducts.

E. Stainless-Steel Sheets: Comply with ASTM A 480/A 480M, Type 304 or 316, as indicated in

the "Duct Schedule" Article; cold rolled, annealed, sheet. Exposed surface finish shall be

No. 2B, No. 2D, No. 3, or No. 4 as indicated in the "Duct Schedule" Article.

F. Aluminum Sheets: Comply with ASTM B 209 Alloy 3003, H14 temper; with mill finish for

concealed ducts, and standard, one-side bright finish for duct surfaces exposed to view.

G. Factory- or Shop-Applied Antimicrobial Coating:

1. Apply to the surface of sheet metal that will form the interior surface of the duct. An

untreated clear coating shall be applied to the exterior surface.

2. Antimicrobial compound shall be tested for efficacy by an NRTL and registered by the

EPA for use in HVAC systems.

3. Coating containing the antimicrobial compound shall have a hardness of 2H, minimum,

when tested according to ASTM D 3363.

4. Surface-Burning Characteristics: Maximum flame-spread index of 25 and maximum

smoke-developed index of 50 when tested according to UL 723; certified by an NRTL.

5. Shop-Applied Coating Color: [Black] [White].

6. Antimicrobial coating on sheet metal is not required for duct containing liner treated with

antimicrobial coating.

H. Reinforcement Shapes and Plates: ASTM A 36/A 36M, steel plates, shapes, and bars; black and

galvanized.

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1. Where black- and galvanized-steel shapes and plates are used to reinforce aluminum

ducts, isolate the different metals with butyl rubber, neoprene, or EPDM gasket materials.

I. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for lengths 36 inches or less; 3/8-inch

minimum diameter for lengths longer than 36 inches.

2.6 DUCT LINER

A. Fibrous-Glass Duct Liner: Comply with ASTM C 1071, NFPA 90A, or NFPA 90B; and with

NAIMA AH124, "Fibrous Glass Duct Liner Standard."

1. <Double click here to find, evaluate, and insert list of manufacturers and products.>

a. Maximum Thermal Conductivity:

1) Type I, Flexible: 0.27 Btu x in./h x sq. ft. x deg F at 75 deg F mean

temperature.

2) Type II, Rigid: 0.23 Btu x in./h x sq. ft. x deg F at 75 deg F mean

temperature.

2. Antimicrobial Erosion-Resistant Coating: Apply to the surface of the liner that will form

the interior surface of the duct to act as a moisture repellent and erosion-resistant coating.

Antimicrobial compound shall be tested for efficacy by an NRTL and registered by the

EPA for use in HVAC systems.

3. [Solvent] [Water]-Based Liner Adhesive: Comply with NFPA 90A or NFPA 90B and

with ASTM C 916.

a. For indoor applications, adhesive shall have a VOC content of 80 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

b. Adhesive shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile

Organic Emissions from Various Sources Using Small-Scale Environmental

Chambers."

B. Flexible Elastomeric Duct Liner: Preformed, cellular, closed-cell, sheet materials complying

with ASTM C 534, Type II, Grade 1; and with NFPA 90A or NFPA 90B.

1. Surface-Burning Characteristics: Maximum flame-spread index of 25 and maximum

smoke-developed index of 50 when tested according to UL 723; certified by an NRTL.

2. Liner Adhesive: As recommended by insulation manufacturer and complying with

NFPA 90A or NFPA 90B.

a. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

b. Adhesive shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile

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Organic Emissions from Various Sources Using Small-Scale Environmental

Chambers."

C. Natural-Fiber Duct Liner: 85 percent cotton, 10 percent borate, and 5 percent polybinding

fibers, treated with a microbial growth inhibitor and complying with NFPA 90A or NFPA 90B.

1. Maximum Thermal Conductivity: 0.24 Btu x in./h x sq. ft. x deg F at75 deg F mean

temperature when tested according to ASTM C 518.

2. Surface-Burning Characteristics: Maximum flame-spread index of 25 and maximum

smoke-developed index of 50 when tested according to ASTM E 84; certified by an

NRTL.

3. Liner Adhesive: As recommended by insulation manufacturer and complying with

NFPA 90A or NFPA 90B.

a. For indoor applications, adhesive shall have a VOC content of 50 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

b. Adhesive shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile

Organic Emissions from Various Sources Using Small-Scale Environmental

Chambers."

D. Insulation Pins and Washers:

1. Cupped-Head, Capacitor-Discharge-Weld Pins: Copper- or zinc-coated steel pin, fully

annealed for capacitor-discharge welding, [0.106-inch-] [0.135-inch-] diameter shank,

length to suit depth of insulation indicated with integral 1-1/2-inch galvanized carbon-

steel washer.

2. Insulation-Retaining Washers: Self-locking washers formed from 0.016-inch-thick

[galvanized steel] [aluminum] [stainless steel]; with beveled edge sized as required to

hold insulation securely in place but not less than 1-1/2 inches in diameter.

E. Shop Application of Duct Liner: Comply with SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible," Figure 7-11, "Flexible Duct Liner Installation."

1. Adhere a single layer of indicated thickness of duct liner with at least 90 percent adhesive

coverage at liner contact surface area. Attaining indicated thickness with multiple layers

of duct liner is prohibited.

2. Apply adhesive to transverse edges of liner facing upstream that do not receive metal

nosing.

3. Butt transverse joints without gaps, and coat joint with adhesive.

4. Fold and compress liner in corners of rectangular ducts or cut and fit to ensure butted-

edge overlapping.

5. Do not apply liner in rectangular ducts with longitudinal joints, except at corners of ducts,

unless duct size and dimensions of standard liner make longitudinal joints necessary.

6. Apply adhesive coating on longitudinal seams in ducts with air velocity of 2500 fpm.

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7. Secure liner with mechanical fasteners 4 inches from corners and at intervals not

exceeding 12 inches transversely; at 3 inches from transverse joints and at intervals not

exceeding 18 inches longitudinally.

8. Secure transversely oriented liner edges facing the airstream with metal nosings that have

either channel or "Z" profiles or are integrally formed from duct wall. Fabricate edge

facings at the following locations:

a. Fan discharges.

b. Intervals of lined duct preceding unlined duct.

c. Upstream edges of transverse joints in ducts where air velocities are higher than

2500 fpm or where indicated.

9. Secure insulation between perforated sheet metal inner duct of same thickness as

specified for outer shell. Use mechanical fasteners that maintain inner duct at uniform

distance from outer shell without compressing insulation.

a. Sheet Metal Inner Duct Perforations: 3/32-inch diameter, with an overall open area

of 23 percent.

10. Terminate inner ducts with buildouts attached to fire-damper sleeves, dampers, turning

vane assemblies, or other devices. Fabricated buildouts (metal hat sections) or other

buildout means are optional; when used, secure buildouts to duct walls with bolts, screws,

rivets, or welds.

2.7 SEALANT AND GASKETS

A. General Sealant and Gasket Requirements: Surface-burning characteristics for sealants and

gaskets shall be a maximum flame-spread index of 25 and a maximum smoke-developed index

of 50 when tested according to UL 723; certified by an NRTL.

B. Two-Part Tape Sealing System:

1. Tape: Woven cotton fiber impregnated with mineral gypsum and modified

acrylic/silicone activator to react exothermically with tape to form hard, durable, airtight

seal.

2. Tape Width: [3 inches] [4 inches] [6 inches].

3. Sealant: Modified styrene acrylic.

4. Water resistant.

5. Mold and mildew resistant.

6. Maximum Static-Pressure Class: 10-inch wg, positive and negative.

7. Service: Indoor and outdoor.

8. Service Temperature: Minus 40 to plus 200 deg F.

9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum.

10. For indoor applications, sealant shall have a VOC content of 250 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

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11. Sealant shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic

Emissions from Various Sources Using Small-Scale Environmental Chambers."

C. Water-Based Joint and Seam Sealant:

1. Application Method: Brush on.

2. Solids Content: Minimum 65 percent.

3. Shore A Hardness: Minimum 20.

4. Water resistant.

5. Mold and mildew resistant.

6. VOC: Maximum 75 g/L (less water).

7. Maximum Static-Pressure Class: 10-inch wg, positive and negative.

8. Service: Indoor or outdoor.

9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum sheets.

D. Solvent-Based Joint and Seam Sealant:

1. Application Method: Brush on.

2. Base: Synthetic rubber resin.

3. Solvent: Toluene and heptane.

4. Solids Content: Minimum 60 percent.

5. Shore A Hardness: Minimum 60.

6. Water resistant.

7. Mold and mildew resistant.

8. For indoor applications, sealant shall have a VOC content of 250 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

9. VOC: Maximum 395 g/L.

10. Sealant shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic

Emissions from Various Sources Using Small-Scale Environmental Chambers."

11. Maximum Static-Pressure Class: 10-inch wg, positive or negative.

12. Service: Indoor or outdoor.

13. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless

steel, or aluminum sheets.

E. Flanged Joint Sealant: Comply with ASTM C 920.

1. General: Single-component, acid-curing, silicone, elastomeric.

2. Type: S.

3. Grade: NS.

4. Class: 25.

5. Use: O.

6. For indoor applications, sealant shall have a VOC content of 250 g/L or less when

calculated according to 40 CFR 59, Subpart D (EPA Method 24).

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7. Sealant shall comply with the testing and product requirements of the California

Department of Health Services' "Standard Practice for the Testing of Volatile Organic

Emissions from Various Sources Using Small-Scale Environmental Chambers."

F. Flange Gaskets: Butyl rubber, neoprene, or EPDM polymer with polyisobutylene plasticizer.

G. Round Duct Joint O-Ring Seals:

1. Seal shall provide maximum 3 cfm/100 sq. ft. at 1-inch wg and shall be rated for10-inch

wg static-pressure class, positive or negative.

2. EPDM O-ring to seal in concave bead in coupling or fitting spigot.

3. Double-lipped, EPDM O-ring seal, mechanically fastened to factory-fabricated couplings

and fitting spigots.

2.8 HANGERS AND SUPPORTS

A. Hanger Rods for Noncorrosive Environments: Cadmium-plated steel rods and nuts.

B. Hanger Rods for Corrosive Environments: Electrogalvanized, all-thread rods or galvanized rods

with threads painted with zinc-chromate primer after installation.

C. Strap and Rod Sizes: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible," Table 5-1, "Rectangular Duct Hangers Minimum Size," and Table 5-2,

"Minimum Hanger Sizes for Round Duct."

D. Steel Cables for Galvanized-Steel Ducts: Galvanized steel complying with ASTM A 603.

E. Steel Cables for Stainless-Steel Ducts: Stainless steel complying with ASTM A 492.

F. Steel Cable End Connections: Cadmium-plated steel assemblies with brackets, swivel, and bolts

designed for duct hanger service; with an automatic-locking and clamping device.

G. Duct Attachments: Sheet metal screws, blind rivets, or self-tapping metal screws; compatible

with duct materials.

H. Trapeze and Riser Supports:

1. Supports for Galvanized-Steel Ducts: Galvanized-steel shapes and plates.

2. Supports for Stainless-Steel Ducts: Stainless-steel shapes and plates.

3. Supports for Aluminum Ducts: Aluminum or galvanized steel coated with zinc chromate.

2.9 SEISMIC-RESTRAINT DEVICES

A. General Requirements for Restraint Components: Rated strengths, features, and applications

shall be as defined in reports by [an evaluation service member of the ICC Evaluation

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Service] [the Office of Statewide Health Planning and Development for the State of

California] [an agency acceptable to authorities having jurisdiction].

1. Structural Safety Factor: Allowable strength in tension, shear, and pullout force of

components shall be at least four times the maximum seismic forces to which they will be

subjected.

B. Channel Support System: Shop- or field-fabricated support assembly made of slotted steel

channels rated in tension, compression, and torsion forces and with accessories for attachment

to braced component at one end and to building structure at the other end. Include matching

components and corrosion-resistant coating.

C. Restraint Cables: [ASTM A 603, galvanized] [ASTM A 492, stainless]-steel cables with end

connections made of cadmium-plated steel assemblies with brackets, swivel, and bolts designed

for restraining cable service; and with an automatic-locking and clamping device or double-

cable clips.

D. Hanger Rod Stiffener: [Steel tube or steel slotted-support-system sleeve with internally

bolted connections] [Reinforcing steel angle clamped] to hanger rod.

E. Mechanical Anchor Bolts: Drilled-in and stud-wedge or female-wedge type. Select anchor bolts

with strength required for anchor and as tested according to ASTM E 488.

PART 3 - EXECUTION

3.1 DUCT INSTALLATION

A. Drawing plans, schematics, and diagrams indicate general location and arrangement of duct

system. Indicated duct locations, configurations, and arrangements were used to size ducts and

calculate friction loss for air-handling equipment sizing and for other design considerations.

Install duct systems as indicated unless deviations to layout are approved on Shop Drawings and

Coordination Drawings.

B. Install ducts according to SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible" unless otherwise indicated.

C. Install round[ and flat-oval] ducts in maximum practical lengths.

D. Install ducts with fewest possible joints.

E. Install factory- or shop-fabricated fittings for changes in direction, size, and shape and for

branch connections.

F. Unless otherwise indicated, install ducts vertically and horizontally, and parallel and

perpendicular to building lines.

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G. Install ducts close to walls, overhead construction, columns, and other structural and permanent

enclosure elements of building.

H. Install ducts with a clearance of 1 inch, plus allowance for insulation thickness.

I. Route ducts to avoid passing through transformer vaults and electrical equipment rooms and

enclosures.

J. Where ducts pass through non-fire-rated interior partitions and exterior walls and are exposed to

view, cover the opening between the partition and duct or duct insulation with sheet metal

flanges of same metal thickness as the duct. Overlap openings on four sides by at least 1-1/2

inches.

K. Where ducts pass through fire-rated interior partitions and exterior walls, install fire dampers.

Comply with requirements in Section 233300 "Air Duct Accessories" for fire and smoke

dampers.

L. Protect duct interiors from moisture, construction debris and dust, and other foreign

materials.[ Comply with SMACNA's "IAQ Guidelines for Occupied Buildings Under

Construction," Appendix G, "Duct Cleanliness for New Construction Guidelines."]

3.2 INSTALLATION OF EXPOSED DUCTWORK

A. Protect ducts exposed in finished spaces from being dented, scratched, or damaged.

B. Trim duct sealants flush with metal. Create a smooth and uniform exposed bead. Do not use

two-part tape sealing system.

C. Grind welds to provide smooth surface free of burrs, sharp edges, and weld splatter. When

welding stainless steel with a No. 3 or 4 finish, grind the welds flush, polish the exposed welds,

and treat the welds to remove discoloration caused by welding.

D. Maintain consistency, symmetry, and uniformity in the arrangement and fabrication of fittings,

hangers and supports, duct accessories, and air outlets.

E. Repair or replace damaged sections and finished work that does not comply with these

requirements.

3.3 ADDITIONAL INSTALLATION REQUIREMENTS FOR COMMERCIAL KITCHEN

HOOD EXHAUST DUCT

A. Install commercial kitchen hood exhaust ducts without dips and traps that may hold grease, and

sloped a minimum of 2 percent to drain grease back to the hood.

B. Install fire-rated access panel assemblies at each change in direction and at maximum intervals

of [20 feet] [12 feet] in horizontal ducts, and at every floor for vertical ducts, or as indicated on

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Drawings. Locate access panel on top or sides of duct a minimum of 1-1/2 inches from bottom

of duct.

C. Do not penetrate fire-rated assemblies except as allowed by applicable building codes and

authorities having jurisdiction.

3.4 DUCT SEALING

A. Seal ducts for duct static-pressure, seal classes, and leakage classes specified in "Duct

Schedule" Article according to SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible."

B. Seal ducts to the following seal classes according to SMACNA's "HVAC Duct Construction

Standards - Metal and Flexible":

1. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

2. Outdoor, Supply-Air Ducts: Seal Class A.

3. Outdoor, Exhaust Ducts: Seal Class C.

4. Outdoor, Return-Air Ducts: Seal Class C.

5. Unconditioned Space, Supply-Air Ducts in Pressure Classes 2-Inch wg and Lower: Seal

Class B.

6. Unconditioned Space, Supply-Air Ducts in Pressure Classes Higher Than 2-Inch wg: Seal

Class A.

7. Unconditioned Space, Exhaust Ducts: Seal Class C.

8. Unconditioned Space, Return-Air Ducts: Seal Class B.

9. Conditioned Space, Supply-Air Ducts in Pressure Classes 2-Inch wg and Lower: Seal

Class C.

10. Conditioned Space, Supply-Air Ducts in Pressure Classes Higher Than 2-Inch wg: Seal

Class B.

11. Conditioned Space, Exhaust Ducts: Seal Class B.

12. Conditioned Space, Return-Air Ducts: Seal Class C.

3.5 HANGER AND SUPPORT INSTALLATION

A. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible,"

Chapter 5, "Hangers and Supports."

B. Building Attachments: Concrete inserts, powder-actuated fasteners, or structural-steel fasteners

appropriate for construction materials to which hangers are being attached.

1. Where practical, install concrete inserts before placing concrete.

2. Install powder-actuated concrete fasteners after concrete is placed and completely cured.

3. Use powder-actuated concrete fasteners for standard-weight aggregate concretes or for

slabs more than 4 inches thick.

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4. Do not use powder-actuated concrete fasteners for lightweight-aggregate concretes or for

slabs less than 4 inches thick.

5. Do not use powder-actuated concrete fasteners for seismic restraints.

C. Hanger Spacing: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Table 5-1, "Rectangular Duct Hangers Minimum Size," and Table 5-2, "Minimum

Hanger Sizes for Round Duct," for maximum hanger spacing; install hangers and supports

within 24 inches of each elbow and within 48 inches of each branch intersection.

D. Hangers Exposed to View: Threaded rod and angle or channel supports.

E. Support vertical ducts with steel angles or channel secured to the sides of the duct with welds,

bolts, sheet metal screws, or blind rivets; support at each floor and at a maximum intervals of 16

feet.

F. Install upper attachments to structures. Select and size upper attachments with pull-out, tension,

and shear capacities appropriate for supported loads and building materials where used.

3.6 SEISMIC-RESTRAINT-DEVICE INSTALLATION

A. Install ducts with hangers and braces designed to support the duct and to restrain against seismic

forces required by applicable building codes. Comply with [SMACNA's "Seismic Restraint

Manual: Guidelines for Mechanical Systems."] [ASCE/SEI 7.]

1. Space lateral supports a maximum of 40 feet o.c., and longitudinal supports a maximum

of 80 feet o.c.

2. Brace a change of direction longer than 12 feet.

B. Select seismic-restraint devices with capacities adequate to carry present and future static and

seismic loads.

C. Install cables so they do not bend across edges of adjacent equipment or building structure.

D. Install cable restraints on ducts that are suspended with vibration isolators.

E. Install seismic-restraint devices using methods approved by [an evaluation service member of

the ICC Evaluation Service] [the Office of Statewide Health Planning and Development

for the State of California] [an agency acceptable to authorities having jurisdiction].

F. Attachment to Structure: If specific attachment is not indicated, anchor bracing and restraints to

structure, to flanges of beams, to upper truss chords of bar joists, or to concrete members.

G. Drilling for and Setting Anchors:

1. Identify position of reinforcing steel and other embedded items prior to drilling holes for

anchors. Do not damage existing reinforcement or embedded items during drilling.

Notify the Architect if reinforcing steel or other embedded items are encountered during

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drilling. Locate and avoid prestressed tendons, electrical and telecommunications

conduit, and gas lines.

2. Do not drill holes in concrete or masonry until concrete, mortar, or grout has achieved

full design strength.

3. Wedge Anchors: Protect threads from damage during anchor installation. Heavy-duty

sleeve anchors shall be installed with sleeve fully engaged in the structural element to

which anchor is to be fastened.

4. Set anchors to manufacturer's recommended torque, using a torque wrench.

5. Install zinc-coated steel anchors for interior applications and stainless-steel anchors for

applications exposed to weather.

3.7 CONNECTIONS

A. Make connections to equipment with flexible connectors complying with Section 233300 "Air

Duct Accessories."

B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for

branch, outlet and inlet, and terminal unit connections.

3.8 PAINTING

A. Paint interior of metal ducts that are visible through registers and grilles and that do not have

duct liner. Apply one coat of flat, black, latex paint over a compatible galvanized-steel primer.

Paint materials and application requirements are specified in Section 099113 "Exterior Painting"

and Section 099123 "Interior Painting."

3.9 FIELD QUALITY CONTROL

A. Perform tests and inspections.

B. Leakage Tests:

1. Comply with SMACNA's "HVAC Air Duct Leakage Test Manual." Submit a test report

for each test.

2. Test the following systems:

a. Ducts with a Pressure Class Higher Than 3-Inch wg: Test representative duct

sections[, selected by Architect from sections installed,] totaling no less than 25

percent of total installed duct area for each designated pressure class.

b. Supply Ducts with a Pressure Class of [2-Inch wg] [3-Inch wg] [4-Inch wg] or

Higher: Test representative duct sections[, selected by Architect from sections

installed,] totaling no less than [50] [100] percent of total installed duct area for

each designated pressure class.

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c. Return Ducts with a Pressure Class of [2-Inch wg] [3-Inch wg] [4-Inch wg] or

Higher: Test representative duct sections[, selected by Architect from sections

installed,] totaling no less than [50] [100] percent of total installed duct area for

each designated pressure class.

d. Exhaust Ducts with a Pressure Class of [2-Inch wg] [3-Inch wg] [4-Inch wg] or

Higher: Test representative duct sections[, selected by Architect from sections

installed,] totaling no less than [50] [100] percent of total installed duct area for

each designated pressure class.

e. Outdoor Air Ducts with a Pressure Class of [2-Inch wg] [3-Inch wg] [4-Inch wg]

or Higher: Test representative duct sections[, selected by Architect from sections

installed,] totaling no less than [50] [100] percent of total installed duct area for

each designated pressure class.

3. Disassemble, reassemble, and seal segments of systems to accommodate leakage testing

and for compliance with test requirements.

4. Test for leaks before applying external insulation.

5. Conduct tests at static pressures equal to maximum design pressure of system or section

being tested. If static-pressure classes are not indicated, test system at maximum system

design pressure. Do not pressurize systems above maximum design operating pressure.

6. Give seven days' advance notice for testing.

C. Duct System Cleanliness Tests:

1. Visually inspect duct system to ensure that no visible contaminants are present.

2. Test sections of metal duct system, chosen randomly by Owner, for cleanliness according

to "Vacuum Test" in NADCA ACR, "Assessment, Cleaning and Restoration of HVAC

Systems."

a. Acceptable Cleanliness Level: Net weight of debris collected on the filter media

shall not exceed 0.75 mg/100 sq. cm.

D. Duct system will be considered defective if it does not pass tests and inspections.

E. Prepare test and inspection reports.

3.10 DUCT CLEANING

A. Clean new duct system(s) before testing, adjusting, and balancing.

B. Use service openings for entry and inspection.

1. Create new openings and install access panels appropriate for duct static-pressure class if

required for cleaning access. Provide insulated panels for insulated or lined duct. Patch

insulation and liner as recommended by duct liner manufacturer. Comply with

Section 233300 "Air Duct Accessories" for access panels and doors.

2. Disconnect and reconnect flexible ducts as needed for cleaning and inspection.

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3. Remove and reinstall ceiling to gain access during the cleaning process.

C. Particulate Collection and Odor Control:

1. When venting vacuuming system inside the building, use HEPA filtration with 99.97

percent collection efficiency for 0.3-micron-size (or larger) particles.

2. When venting vacuuming system to outdoors, use filter to collect debris removed from

HVAC system, and locate exhaust downwind and away from air intakes and other points

of entry into building.

D. Clean the following components by removing surface contaminants and deposits:

1. Air outlets and inlets (registers, grilles, and diffusers).

2. Supply, return, and exhaust fans including fan housings, plenums (except ceiling supply

and return plenums), scrolls, blades or vanes, shafts, baffles, dampers, and drive

assemblies.

3. Air-handling unit internal surfaces and components including mixing box, coil section,

air wash systems, spray eliminators, condensate drain pans, humidifiers and

dehumidifiers, filters and filter sections, and condensate collectors and drains.

4. Coils and related components.

5. Return-air ducts, dampers, actuators, and turning vanes except in ceiling plenums and

mechanical equipment rooms.

6. Supply-air ducts, dampers, actuators, and turning vanes.

7. Dedicated exhaust and ventilation components and makeup air systems.

E. Mechanical Cleaning Methodology:

1. Clean metal duct systems using mechanical cleaning methods that extract contaminants

from within duct systems and remove contaminants from building.

2. Use vacuum-collection devices that are operated continuously during cleaning. Connect

vacuum device to downstream end of duct sections so areas being cleaned are under

negative pressure.

3. Use mechanical agitation to dislodge debris adhered to interior duct surfaces without

damaging integrity of metal ducts, duct liner, or duct accessories.

4. Clean fibrous-glass duct liner with HEPA vacuuming equipment; do not permit duct liner

to get wet. Replace fibrous-glass duct liner that is damaged, deteriorated, or delaminated

or that has friable material, mold, or fungus growth.

5. Clean coils and coil drain pans according to NADCA 1992. Keep drain pan operational.

Rinse coils with clean water to remove latent residues and cleaning materials; comb and

straighten fins.

6. Provide drainage and cleanup for wash-down procedures.

7. Antimicrobial Agents and Coatings: Apply EPA-registered antimicrobial agents if fungus

is present. Apply antimicrobial agents according to manufacturer's written instructions

after removal of surface deposits and debris.

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3.11 START UP

A. Air Balance: Comply with requirements in Section 230593 "Testing, Adjusting, and Balancing

for HVAC."

3.12 DUCT SCHEDULE

A. Fabricate ducts with galvanized sheet steel except as otherwise indicated and as follows:

1. Underground Ducts: Concrete-encased, [galvanized sheet steel] [PVC-coated,

galvanized sheet steel with thicker coating on duct exterior] [stainless steel].

B. Supply Ducts:

1. Ducts Connected to Fan Coil Units, Furnaces, Heat Pumps, and Terminal Units <Insert

equipment>:

a. Pressure Class: Positive [1-inch wg] [2-inch wg].

b. Minimum SMACNA Seal Class: [A] [B] [C].

c. SMACNA Leakage Class for Rectangular: [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [12] [24].

2. Ducts Connected to Constant-Volume Air-Handling Units <Insert equipment>:

a. Pressure Class: Positive [2-inch wg] [3-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [6] [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [6] [12] [24].

3. Ducts Connected to Variable-Air-Volume Air-Handling Units <Insert equipment>:

a. Pressure Class: Positive [3-inch wg] [4-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [3] [6].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6].

4. Ducts Connected to Equipment Not Listed Above:

a. Pressure Class: Positive [2-inch wg] [3-inch wg] [4-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [3] [6] [12].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6] [12].

C. Return Ducts:

1. Ducts Connected to Fan Coil Units, Furnaces, Heat Pumps, and Terminal Units <Insert

equipment>:

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a. Pressure Class: Positive or negative [1-inch wg] [2-inch wg].

b. Minimum SMACNA Seal Class: [A] [B] [C].

c. SMACNA Leakage Class for Rectangular: [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [12] [24].

2. Ducts Connected to Air-Handling Units <Insert equipment>:

a. Pressure Class: Positive or negative [2-inch wg] [3-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [6] [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [6] [12] [24].

3. Ducts Connected to Equipment Not Listed Above:

a. Pressure Class: Positive or negative [2-inch wg] [3-inch wg] [4-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [3] [6] [12].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6] [12].

D. Exhaust Ducts:

1. Ducts Connected to Fans Exhausting (ASHRAE 62.1, Class 1 and 2) Air:

a. Pressure Class: Negative [1-inch wg] [2-inch wg] [3-inch wg].

b. Minimum SMACNA Seal Class: [A] [B] [C] if negative pressure, and A if positive

pressure.

c. SMACNA Leakage Class for Rectangular: [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [6] [12] [24].

2. Ducts Connected to Air-Handling Units <Insert equipment>:

a. Pressure Class: Positive or negative [2-inch wg] [3-inch wg].

b. Minimum SMACNA Seal Class: [A] [B] if negative pressure, and A if positive

pressure.

c. SMACNA Leakage Class for Rectangular: [6] [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6] [12] [24].

3. Ducts Connected to Commercial Kitchen Hoods: Comply with NFPA 96.

a. Exposed to View: Type 304, stainless-steel sheet, [No. 4] [No. 3] finish.

b. Concealed: [Type 304, stainless-steel sheet, No. 2D finish] [Carbon-steel sheet].

c. Welded seams and joints.

d. Pressure Class: Positive or negative [2-inch wg] [3-inch wg] [4-inch wg].

e. Minimum SMACNA Seal Class: Welded seams, joints, and penetrations.

f. SMACNA Leakage Class: 3.

4. Ducts Connected to Dishwasher Hoods:

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a. Type 304, stainless-steel sheet.

b. Exposed to View: [No. 4] [No. 3] finish.

c. Concealed: No. 2D finish.

d. Welded seams and flanged joints with watertight EPDM gaskets.

e. Pressure Class: Positive or negative [2-inch wg] [3-inch wg].

f. Minimum SMACNA Seal Class: Welded seams, joints, and penetrations.

g. SMACNA Leakage Class: 3.

5. Ducts Connected to Fans Exhausting Laboratory and Process (ASHRAE 62.1, Class 3

and 4) Air:

a. [Type 316] [Type 304], stainless-steel sheet.

1) Exposed to View: [No. 4] [No. 3] finish.

2) Concealed: [No. 2B] [No. 2D] finish.

b. PVC-coated, galvanized sheet steel with thicker coating on duct interior.

c. Pressure Class: Positive or negative [3-inch wg] [4-inch wg] [6-inch wg].

d. Minimum SMACNA Seal Class: [A] [Welded seams, joints, and penetrations].

e. SMACNA Leakage Class: 3.

6. Ducts Connected to Equipment Not Listed Above:

a. Pressure Class: Positive or negative [2-inch wg] [3-inch wg] [4-inch wg].

b. Minimum SMACNA Seal Class: [A] [B] if negative pressure, and A if positive

pressure.

c. SMACNA Leakage Class for Rectangular: [6] [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6] [12] [24].

E. Outdoor-Air (Not Filtered, Heated, or Cooled) Ducts:

1. Ducts Connected to Fan Coil Units, Furnaces, Heat Pumps, and Terminal Units <Insert

equipment>:

a. Pressure Class: Positive or negative [1-inch wg] [2-inch wg].

b. Minimum SMACNA Seal Class: [A] [B] [C].

c. SMACNA Leakage Class for Rectangular: [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [6] [12] [24].

2. Ducts Connected to Air-Handling Units <Insert equipment>:

a. Pressure Class: Positive or negative [2-inch wg] [3-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [6] [12] [24].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6] [12] [24].

3. Ducts Connected to Equipment Not Listed Above:

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a. Pressure Class: Positive or negative [2-inch wg] [3-inch wg] [4-inch wg].

b. Minimum SMACNA Seal Class: [A] [B].

c. SMACNA Leakage Class for Rectangular: [3] [6] [12].

d. SMACNA Leakage Class for Round and Flat Oval: [3] [6] [12].

F. Intermediate Reinforcement:

1. Galvanized-Steel Ducts: [Galvanized steel] [Carbon steel coated with zinc-chromate

primer] [Galvanized steel or carbon steel coated with zinc-chromate primer].

2. PVC-Coated Ducts:

a. Exposed to Airstream: Match duct material.

b. Not Exposed to Airstream: [Galvanized] [Match duct material].

3. Stainless-Steel Ducts:

a. Exposed to Airstream: Match duct material.

b. Not Exposed to Airstream: [Galvanized] [Match duct material].

4. Aluminum Ducts: [Aluminum][or galvanized sheet steel coated with zinc chromate].

G. Liner:

1. Supply Air Ducts: [Fibrous glass, Type I] [Flexible elastomeric] [Natural fiber], [1

inch] [1-1/2 inches] [2 inches] thick.

2. Return Air Ducts: [Fibrous glass, Type I] [Flexible elastomeric] [Natural fiber], [1

inch] [1-1/2 inches] [2 inches] thick.

3. Exhaust Air Ducts: [Fibrous glass, Type I] [Flexible elastomeric] [Natural fiber], [1

inch] thick.

4. Supply Fan Plenums: [Fibrous glass, Type II] [Flexible elastomeric] [Natural fiber],

[1 inch] [1-1/2 inches] [2 inches] thick.

5. Return- and Exhaust-Fan Plenums: [Fibrous glass, Type II] [Flexible elastomeric]

[Natural fiber], [2 inches] thick.

6. Transfer Ducts: [Fibrous glass, Type I] [Flexible elastomeric] [Natural fiber], [1 inch]

[1-1/2 inches] [2 inches] thick.

H. Double-Wall Duct Interstitial Insulation:

1. Supply Air Ducts: [1 inch] [1-1/2 inches] [2 inches] thick.

2. Return Air Ducts: [1 inch] [1-1/2 inches] [2 inches] thick.

3. Exhaust Air Ducts: [1 inch] [1-1/2 inches] [2 inches] thick.

I. Elbow Configuration:

1. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 4-2, "Rectangular Elbows."

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a. Velocity 1000 fpm or Lower:

1) Radius Type RE 1 with minimum 0.5 radius-to-diameter ratio.

2) Mitered Type RE 4 without vanes.

b. Velocity 1000 to 1500 fpm:

1) Radius Type RE 1 with minimum 1.0 radius-to-diameter ratio.

2) Radius Type RE 3 with minimum 0.5 radius-to-diameter ratio and two

vanes.

3) Mitered Type RE 2 with vanes complying with SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 4-3, "Vanes and Vane

Runners," and Figure 4-4, "Vane Support in Elbows."

c. Velocity 1500 fpm or Higher:

1) Radius Type RE 1 with minimum 1.5 radius-to-diameter ratio.

2) Radius Type RE 3 with minimum 1.0 radius-to-diameter ratio and two

vanes.

3) Mitered Type RE 2 with vanes complying with SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 4-3, "Vanes and Vane

Runners," and Figure 4-4, "Vane Support in Elbows."

2. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 4-2, "Rectangular Elbows."

a. Radius Type RE 1 with minimum 1.5 radius-to-diameter ratio.

b. Radius Type RE 3 with minimum 1.0 radius-to-diameter ratio and two vanes.

c. Mitered Type RE 2 with vanes complying with SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible," Figure 4-3, "Vanes and Vane

Runners," and Figure 4-4, "Vane Support in Elbows."

3. Round Duct: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and

Flexible," Figure 3-4, "Round Duct Elbows."

a. Minimum Radius-to-Diameter Ratio and Elbow Segments: Comply with

SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Table 3-

1, "Mitered Elbows." Elbows with less than 90-degree change of direction have

proportionately fewer segments.

1) Velocity 1000 fpm or Lower: 0.5 radius-to-diameter ratio and three

segments for 90-degree elbow.

2) Velocity 1000 to 1500 fpm: 1.0 radius-to-diameter ratio and four segments

for 90-degree elbow.

3) Velocity 1500 fpm or Higher: 1.5 radius-to-diameter ratio and five segments

for 90-degree elbow.

4) Radius-to Diameter Ratio: 1.5.

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b. Round Elbows, 12 Inches and Smaller in Diameter: Stamped or pleated.

c. Round Elbows, 14 Inches and Larger in Diameter: [Standing seam] [Welded].

J. Branch Configuration:

1. Rectangular Duct: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 4-6, "Branch Connection."

a. Rectangular Main to Rectangular Branch: 45-degree entry.

b. Rectangular Main to Round Branch: Spin in.

2. Round and Flat Oval: Comply with SMACNA's "HVAC Duct Construction Standards -

Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and Figure 3-6, "Conical

Tees." Saddle taps are permitted in existing duct.

a. Velocity 1000 fpm or Lower: 90-degree tap.

b. Velocity 1000 to 1500 fpm: Conical tap.

c. Velocity 1500 fpm or Higher: 45-degree lateral.

END OF SECTION 233113

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SECTION 233300 - AIR DUCT ACCESSORIES

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Backdraft and pressure relief dampers.

2. Barometric relief dampers.

3. Manual volume dampers.

4. Control dampers.

5. Fire dampers.

6. Ceiling radiation dampers.

7. Smoke dampers.

8. Combination fire and smoke dampers.

9. Corridor dampers.

10. Flange connectors.

11. Duct silencers.

12. Turning vanes.

13. Remote damper operators.

14. Duct-mounted access doors.

15. Flexible connectors.

16. Flexible ducts.

17. Duct security bars.

18. Duct accessory hardware.

B. Related Requirements:

1. Section 233723 "HVAC Gravity Ventilators" for roof-mounted ventilator caps.

2. Section 283111 "Digital, Addressable Fire-Alarm System" for duct-mounted fire and

smoke detectors.

3. Section 283112 "Zoned (DC-Loop) Fire-Alarm System" for duct-mounted fire and smoke

detectors.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

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1. For duct silencers, include pressure drop and dynamic insertion loss data. Include

breakout noise calculations for high transmission loss casings.

B. Shop Drawings: For duct accessories. Include plans, elevations, sections, details and

attachments to other work.

1. Detail duct accessories fabrication and installation in ducts and other construction.

Include dimensions, weights, loads, and required clearances; and method of field

assembly into duct systems and other construction. Include the following:

a. Special fittings.

b. Manual volume damper installations.

c. Control-damper installations.

d. Fire-damper, smoke-damper, combination fire- and smoke-damper, ceiling, and

corridor damper installations, including sleeves; and duct-mounted access doors

and remote damper operators.

e. Duct security bars.

f. Wiring Diagrams: For power, signal, and control wiring.

1.4 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Reflected ceiling plans, drawn to scale, on which ceiling-mounted

access panels and access doors required for access to duct accessories are shown and

coordinated with each other, using input from Installers of the items involved.

B. Source quality-control reports.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For air duct accessories to include in operation and

maintenance manuals.

PART 2 - PRODUCTS

2.1 ASSEMBLY DESCRIPTION

A. Comply with NFPA 90A, "Installation of Air Conditioning and Ventilating Systems," and with

NFPA 90B, "Installation of Warm Air Heating and Air Conditioning Systems."

B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for

acceptable materials, material thicknesses, and duct construction methods unless otherwise

indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains,

discolorations, and other imperfections.

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2.2 MATERIALS

A. Galvanized Sheet Steel: Comply with ASTM A 653/A 653M.

1. Galvanized Coating Designation: G90.

2. Exposed-Surface Finish: Mill phosphatized.

B. Stainless-Steel Sheets: Comply with ASTM A 480/A 480M, Type 304, and having a No. 2

finish for concealed ducts and No. 2 finish for exposed ducts.

C. Aluminum Sheets: Comply with ASTM B 209, Alloy 3003, Temper H14; with mill finish for

concealed ducts and standard, 1-side bright finish for exposed ducts.

D. Extruded Aluminum: Comply with ASTM B 221, Alloy 6063, Temper T6.

E. Reinforcement Shapes and Plates: Galvanized-steel reinforcement where installed on

galvanized sheet metal ducts; compatible materials for aluminum and stainless-steel ducts.

F. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for lengths 36 inches or less; 3/8-inch

minimum diameter for lengths longer than 36 inches.

2.3 BACKDRAFT AND PRESSURE RELIEF DAMPERS

A. Description: Gravity balanced.

B. Maximum Air Velocity: 2000 fpm.

C. Maximum System Pressure: 2-inch wg

D. Frame: Hat-shaped, 0.063-inch-thick extruded aluminum, with welded corners or mechanically

attached and mounting flange.

E. Blades: Multiple single-piece blades, off-center pivoted, maximum 6-inch width, 0.025-inch-

thick, roll-formed aluminum with sealed edges.

F. Blade Action: Parallel.

G. Blade Seals: Neoprene, mechanically locked.

H. Blade Axles:

1. Material: Stainless steel.

2. Diameter: 0.20 inch.

I. Tie Bars and Brackets: Aluminum.

J. Return Spring: Adjustable tension.

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K. Bearings: synthetic pivot bushings.

L. Accessories:

1. Adjustment device to permit setting for varying differential static pressure.

2. Counterweights and spring-assist kits for vertical airflow installations.

3. Electric actuators.

4. Chain pulls.

5. Screen Mounting: Front mounted in sleeve.

a. Sleeve Thickness: 20 gage minimum.

b. Sleeve Length: 6 inches minimum.

6. Screen Mounting: Rear mounted.

7. Screen Material: Aluminum.

8. Screen Type: Bird.

9. 90-degree stops.

2.4 BAROMETRIC RELIEF DAMPERS

A. Suitable for horizontal or vertical mounting.

B. Maximum Air Velocity: 1250 fpm.

C. Maximum System Pressure: 2-inch wg.

D. Frame: Hat-shaped, 0.063-inch-thick extruded aluminum, with welded corners or mechanically

attached and mounting flange.

E. Blades:

1. Multiple, 0.025-inch-thick, roll-formed aluminum.

2. Maximum Width: 6 inches.

3. Action: Parallel.

4. Balance: Gravity.

5. Eccentrically pivoted Off-center pivoted End pivoted.

F. Blade Seals: Neoprene.

G. Blade Axles: Stainless steel.

H. Tie Bars and Brackets:

1. Material: Aluminum.

2. Rattle free with 90-degree stop.

I. Return Spring: Adjustable tension.

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J. Bearings: Synthetic.

K. Accessories:

1. Flange on intake.

2. Adjustment device to permit setting for varying differential static pressures.

3. .

2.5 MANUAL VOLUME DAMPERS

A. Standard, Steel, Manual Volume Dampers:

1. Standard leakage rating, with linkage outside airstream.

2. Suitable for horizontal or vertical applications.

3. Frames:

a. Frame: Hat-shaped, 0.094-inch-thick, galvanized sheet steel.

b. Mitered and welded corners.

c. Flanges for attaching to walls and flangeless frames for installing in ducts.

4. Blades:

a. Multiple or single blade.

b. Parallel- or opposed-blade design.

c. Stiffen damper blades for stability.

d. Galvanized-steel, 0.064 inch thick.

5. Blade Axles: Galvanized steel.

6. Bearings:

a. Molded synthetic.

b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full

length of damper blades and bearings at both ends of operating shaft.

7. Tie Bars and Brackets: Galvanized steel.

B. Standard, Aluminum, Manual Volume Dampers:

1. Standard leakage rating, with linkage outside airstream.

2. Suitable for horizontal or vertical applications.

3. Frames: Hat-shaped, 0.10-inch-thick, aluminum sheet channels; frames with flanges for

attaching to walls and flangeless frames for installing in ducts.

4. Blades:

a. Multiple or single blade.

b. Parallel- or opposed-blade design.

c. Stiffen damper blades for stability.

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d. Roll-Formed Aluminum Blades: 0.10-inch-thick aluminum sheet.

e. Extruded-Aluminum Blades: 0.050-inch-thick extruded aluminum.

5. Blade Axles: Galvanized steel.

6. Bearings:

a. Molded synthetic.

b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full

length of damper blades and bearings at both ends of operating shaft.

7. Tie Bars and Brackets: Aluminum.

C. Low-Leakage, Steel, Manual Volume Dampers:

1. Comply with AMCA 500-D testing for damper rating.

2. Low-leakage rating, with linkage outside airstream, and bearing AMCA's Certified

Ratings Seal for both air performance and air leakage.

3. Suitable for horizontal or vertical applications.

4. Frames:

a. Hat U Angle shaped.

b. 0.05-inch-thick stainless steel.

c. Mitered and welded corners.

d. Flanges for attaching to walls and flangeless frames for installing in ducts.

5. Blades:

a. Multiple or single blade.

b. Parallel- or opposed-blade design.

c. Stiffen damper blades for stability.

d. Stainless, roll-formed steel, 0.064 inch thick.

6. Blade Axles: Stainless steel.

7. Bearings:

a. Molded synthetic.

b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full

length of damper blades and bearings at both ends of operating shaft.

8. Blade Seals: Neoprene.

9. Jamb Seals: Cambered stainless steel.

10. Tie Bars and Brackets: Aluminum.

11. Accessories:

a. Include locking device to hold single-blade dampers in a fixed position without

vibration.

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D. Low-Leakage, Aluminum, Manual Volume Dampers:

1. Comply with AMCA 500-D testing for damper rating.

2. Low-leakage rating, with linkage outside airstream, and bearing AMCA's Certified

Ratings Seal for both air performance and air leakage.

3. Suitable for horizontal or vertical applications.

4. Frames: Hat U Angle-shaped, 0.10-inch-thick, aluminum sheet channels; frames with

flanges for attaching to walls and flangeless frames for installing in ducts.

5. Blades:

a. Multiple or single blade.

b. Parallel- or opposed-blade design.

c. Roll-Formed Aluminum Blades: 0.10-inch-thick aluminum sheet.

d. Extruded-Aluminum Blades: 0.050-inch-thick extruded aluminum.

6. Blade Axles: Stainless steel.

7. Bearings:

a. Molded synthetic.

b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full

length of damper blades and bearings at both ends of operating shaft.

8. Blade Seals: Neoprene.

9. Jamb Seals: Cambered stainless steel.

10. Tie Bars and Brackets: Aluminum.

11. Accessories:

a. Include locking device to hold single-blade dampers in a fixed position without

vibration.

E. Jackshaft:

1. Size: 0.5-inch diameter.

2. Material: Galvanized-steel pipe rotating within pipe-bearing assembly mounted on

supports at each mullion and at each end of multiple-damper assemblies.

3. Length and Number of Mountings: As required to connect linkage of each damper in

multiple-damper assembly.

F. Damper Hardware:

1. Zinc-plated, die-cast core with dial and handle made of 3/32-inch-thick zinc-plated steel,

and a 3/4-inch hexagon locking nut.

2. Include center hole to suit damper operating-rod size.

3. Include elevated platform for insulated duct mounting.

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2.6 CONTROL DAMPERS

A. Low-leakage rating, with linkage outside airstream, and bearing AMCA's Certified Ratings Seal

for both air performance and air leakage.

B. Frames:

1. Hat U Angle shaped.

2. 0.05-inch-thick stainless steel or aluminum

3. Mitered and welded or Interlocking, gusseted corners.

C. Blades:

1. Multiple blade with maximum blade width of 6 inches.

2. Parallel- and opposed-blade design.

3. Aluminum.

4. 0.064 inch thick single skin or 0.0747-inch-thick dual skin.

5. Blade Edging: Closed-cell neoprene.

6. Blade Edging: Inflatable seal blade edging, or replaceable rubber seals.

D. Blade Axles: 1/2-inch-diameter; stainless steel; blade-linkage hardware of zinc-plated steel and

brass; ends sealed against blade bearings.

1. Operating Temperature Range: From minus 40 to plus 200 deg F.

E. Bearings:

1. Molded synthetic.

2. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full length of

damper blades and bearings at both ends of operating shaft.

3. Thrust bearings at each end of every blade.

2.7 FIRE DAMPERS

A. Type: Static and dynamic; rated and labeled according to UL 555 by an NRTL.

B. Closing rating in ducts up to 4-inch wg static pressure class and minimum 2000-fpm velocity.

C. Fire Rating: 1-1/2 and 3 hours.

D. Frame: Curtain type with blades outside airstream except when located behind grille where

blades may be inside airstream; fabricated with roll-formed, 0.034-inch-thick galvanized steel;

with mitered and interlocking corners.

E. Mounting Sleeve: Factory- or field-installed, galvanized sheet steel.

1. Minimum Thickness: 0.05 thick, as indicated, and of length to suit application.

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2. Exception: Omit sleeve where damper-frame width permits direct attachment of

perimeter mounting angles on each side of wall or floor; thickness of damper frame must

comply with sleeve requirements.

F. Mounting Orientation: Vertical or horizontal as indicated.

G. Blades: Roll-formed, interlocking, 0.024-inch- thick, galvanized sheet steel. In place of

interlocking blades, use full-length, 0.034-inch-thick, galvanized-steel blade connectors.

H. Horizontal Dampers: Include blade lock and stainless-steel closure spring.

I. Heat-Responsive Device: Replaceable, 165 deg F rated, fusible links.

2.8 CEILING RADIATION DAMPERS

A. General Requirements:

1. Labeled according to UL 555C by an NRTL.

2. Comply with construction details for tested floor- and roof-ceiling assemblies as

indicated in UL's "Fire Resistance Directory."

B. Frame: Galvanized sheet steel, round or rectangular, style to suit ceiling construction.

C. Blades: Galvanized sheet steel with refractory insulation.

D. Heat-Responsive Device: Replaceable, 165 deg F rated, fusible links.

E. Fire Rating: 1 hours.

2.9 SMOKE DAMPERS

A. General Requirements: Label according to UL 555S by an NRTL.

B. Smoke Detector: Integral, factory wired for single-point connection.

C. Frame: Hat-shaped, 0.094-inch-thick, galvanized sheet steel, with welded interlocking, gusseted

or mechanically attached corners and mounting flange.

D. Blades: Roll-formed, horizontal, interlocking overlapping, 0.034-inch- thick, galvanized sheet

steel.

E. Leakage: Class I.

F. Rated pressure and velocity to exceed design airflow conditions.

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G. Mounting Sleeve: Factory-installed, 0.039-inch- thick, galvanized sheet steel; length to suit wall

or floor application with factory-furnished silicone calking.

H. Damper Motors: Modulating or two-position action.

I. Comply with NEMA designation, temperature rating, service factor, enclosure type, and

efficiency requirements for motors specified in Section 230513 "Common Motor Requirements

for HVAC Equipment."

1. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven load

will not require motor to operate in service factor range above 1.0.

2. Controllers, Electrical Devices, and Wiring: Comply with requirements for electrical

devices and connections specified in Section 230923 "Direct Digital Control (DDC)

System for HVAC."

3. Permanent-Split-Capacitor or Shaded-Pole Motors: With oil-immersed and sealed gear

trains.

4. Spring-Return Motors: Equip with an integral spiral-spring mechanism where indicated.

Enclose entire spring mechanism in a removable housing designed for service or

adjustments. Size for running torque rating of 150 in. x lbf and breakaway torque rating

of 150 in. x lbf.

5. Outdoor Motors and Motors in Outdoor-Air Intakes: Equip with O-ring gaskets designed

to make motors weatherproof. Equip motors with internal heaters to permit normal

operation at minus 40 deg F.

6. Nonspring-Return Motors: For dampers larger than 25 sq. ft., size motor for running

torque rating of 150 in. x lbf and breakaway torque rating of 300 in. x lbf.

7. Electrical Connection: 24V.

J. Accessories:

1. Auxiliary switches for signaling fan control or position indication.

2. Test and reset switches, damper mounted.

2.10 COMBINATION FIRE AND SMOKE DAMPERS

A. Type: Dynamic; rated and labeled according to UL 555 and UL 555S by an NRTL.

B. Closing rating in ducts up to 4-inch wg static pressure class and minimum 2000-fpm velocity.

C. Fire Rating: 1-1/2 and 3 hours.

D. Frame: Hat-shaped, 0.094-inch-thick, galvanized sheet steel, with welded interlocking, gusseted

or mechanically attached corners and mounting flange.

E. Heat-Responsive Device: Resettable, 165 deg F rated, fusible links.

F. Smoke Detector: Integral, factory wired for single-point connection.

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G. Blades: Roll-formed, horizontal, interlocking or overlapping, 0.063-inch- thick, galvanized

sheet steel.

H. Leakage: Class I.

I. Rated pressure and velocity to exceed design airflow conditions.

J. Mounting Sleeve: Factory-installed, 0.039-inch- thick, galvanized sheet steel; length to suit wall

or floor application.

K. Master control panel for use in dynamic smoke-management systems.

L. Damper Motors: Modulating or two-position action.

M. Comply with NEMA designation, temperature rating, service factor, enclosure type, and

efficiency requirements for motors specified in Section 230513 "Common Motor Requirements

for HVAC Equipment."

1. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven load

will not require motor to operate in service factor range above 1.0.

2. Controllers, Electrical Devices, and Wiring: Comply with requirements for electrical

devices and connections specified in Section 230923 "Direct Digital Control (DDC)

System for HVAC."

3. Permanent-Split-Capacitor or Shaded-Pole Motors: With oil-immersed and sealed gear

trains.

4. Spring-Return Motors: Equip with an integral spiral-spring mechanism where indicated.

Enclose entire spring mechanism in a removable housing designed for service or

adjustments. Size for running torque rating of 150 in. x lbf and breakaway torque rating

of 150 in. x lbf.

5. Outdoor Motors and Motors in Outdoor-Air Intakes: Equip with O-ring gaskets designed

to make motors weatherproof. Equip motors with internal heaters to permit normal

operation at minus 40 deg F.

6. Nonspring-Return Motors: For dampers larger than 25 sq. ft., size motor for running

torque rating of 150 in. x lbf and breakaway torque rating of 300 in. x lbf.

7. Electrical Connection: 115 V, single phase, 60 Hz.

N. Accessories:

1. Auxiliary switches for signaling fan control or position indication.

2. Test and reset switches, damper mounted.

2.11 FLANGE CONNECTORS

A. Description: Add-on or roll-formed, factory-fabricated, slide-on transverse flange connectors,

gaskets, and components.

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B. Material: Galvanized steel.

C. Gage and Shape: Match connecting ductwork.

2.12 DUCT SILENCERS

A. General Requirements:

1. Factory fabricated.

2. Fire-Performance Characteristics: Adhesives, sealants, packing materials, and accessory

materials shall have flame-spread index not exceeding 25 and smoke-developed index not

exceeding 50 when tested according to ASTM E 84.

3. Airstream Surfaces: Surfaces in contact with the airstream shall comply with

requirements in ASHRAE 62.1.

B. Shape:

1. Rectangular straight with splitters or baffles.

2. Round straight with center bodies or pods.

3. Rectangular elbow with splitters or baffles.

4. Round elbow with center bodies or pods.

5. Rectangular transitional with splitters or baffles.

C. Rectangular Silencer Outer Casing: ASTM A 653/A 653M, [G90] [G60], galvanized sheet

steel, [0.034 inch] [0.040 inch] thick.

D. Round Silencer Outer Casing: ASTM A 653/A 653M, [G90] [G60], galvanized sheet steel.

1. Sheet Metal Thickness for Units up to 24 Inches in Diameter: 0.034 inch thick.

2. Sheet Metal Thickness for Units 26 through 40 Inches in Diameter: 0.040 inch thick.

3. Sheet Metal Thickness for Units 42 through 52 Inches in Diameter: 0.05 inch thick.

4. Sheet Metal Thickness for Units 54 through 60 Inches in Diameter: 0.064 inch thick.

E. Inner Casing and Baffles: ASTM A 653/A 653M, [G90] [G60] galvanized sheet metal, 0.034

inch thick, and with 1/8-inch-diameter perforations.

F. Special Construction:

1. Suitable for outdoor use.

2. High transmission loss[ to achieve STC 45].

G. Connection Sizes: Match connecting ductwork unless otherwise indicated.

H. Principal Sound-Absorbing Mechanism:

1. Controlled impedance membranes and broadly tuned resonators without absorptive

media.

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2. [Dissipative] [Film-lined] type with fill material.

a. Fill Material: [Inert and vermin-proof fibrous material, packed under not less

than 5 percent compression] [Inert and vermin-proof fibrous material,

packed under not less than 15 percent compression] [Moisture-proof

nonfibrous material].

b. Erosion Barrier: Polymer bag enclosing fill, and heat sealed before assembly.

3. Lining: [None] [Mylar] [Tedlar] [Fiberglas cloth] <Insert material>.

I. Fabricate silencers to form rigid units that will not pulsate, vibrate, rattle, or otherwise react to

system pressure variations. Do not use mechanical fasteners for unit assemblies.

1. Joints: [Lock formed and sealed] [continuously welded] [or] [flanged connections].

2. Suspended Units: Factory-installed suspension hooks or lugs attached to frame in

quantities and spaced to prevent deflection or distortion.

3. Reinforcement: Cross or trapeze angles for rigid suspension.

J. Accessories:

1. Integral [1-1/2] [3]-hour fire damper with access door.[ Access door to be high

transmission loss to match silencer.]

2. Factory-installed end caps to prevent contamination during shipping.

3. Removable splitters.

4. Airflow measuring devices.

K. Source Quality Control: Test according to ASTM E 477.

1. Testing [of mockups ]to be witnessed by [Architect] [Owner].

2. Record acoustic ratings, including dynamic insertion loss and generated-noise power

levels with an airflow of at least 2000-fpm face velocity.

3. Leak Test: Test units for airtightness at 200 percent of associated fan static pressure or 6-

inch wg static pressure, whichever is greater.

L. Capacities and Characteristics:

1. Configuration: [Straight] [90-degree elbow] <Insert configuration>.

2. Shape: [Rectangular] [Round].

3. Attenuation Mechanism: [Acoustical glass fiber] [Acoustical glass fiber with

protective film liner] [Helmholtz resonator mechanism with no internal media].

4. Maximum Pressure Drop: [0.35-inch wg] <Insert value>.

5. Casing:

a. Attenuation: [Standard] [High transmission loss].

b. Outer Material: [Galvanized steel] [Stainless steel] [Aluminum].

c. Inner Material: [Galvanized steel] [Stainless steel] [Aluminum].

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6. Velocity Range: <Insert fps> to <Insert fps>.

7. End Connection: [1-inch slip joint] [Flange].

8. Length: <Insert inches>.

9. Face Dimension:

a. Width: <Insert inches>.

b. Height: <Insert inches>.

10. Face Velocity: <Insert fpm>.

11. Dynamic Insertion Loss: <Insert dBA>.

12. Generated Noise: <Insert dBA>.

13. Accessories:

a. Access door.

b. Birdscreen.

2.13 TURNING VANES

A. Manufactured Turning Vanes for Metal Ducts: Curved blades of galvanized sheet steel; support

with bars perpendicular to blades set; set into vane runners suitable for duct mounting.

1. Acoustic Turning Vanes: Fabricate airfoil-shaped aluminum extrusions with perforated

faces and fibrous-glass fill.

B. Manufactured Turning Vanes for Nonmetal Ducts: Fabricate curved blades of resin-bonded

fiberglass with acrylic polymer coating; support with bars perpendicular to blades set; set into

vane runners suitable for duct mounting.

C. General Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal

and Flexible"; Figures 4-3, "Vanes and Vane Runners," and 4-4, "Vane Support in Elbows."

D. Vane Construction: Single or Double wall.

E. Vane Construction: Single wall for ducts up to 48 inches wide and double wall for larger

dimensions.

2.14 REMOTE DAMPER OPERATORS

A. Description: Cable system designed for remote manual damper adjustment.

B. Tubing: [Brass] [Copper] [Aluminum].

C. Cable: [Stainless steel] [Steel].

D. Wall-Box Mounting: [Recessed] [Surface].

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E. Wall-Box Cover-Plate Material: [Steel] [Stainless steel].

2.15 DUCT-MOUNTED ACCESS DOORS

A. Duct-Mounted Access Doors: Fabricate access panels according to SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible"; Figures 7-2, "Duct Access Doors and Panels,"

and 7-3, "Access Doors - Round Duct."

1. Door:

a. Double wall, rectangular.

b. Galvanized sheet metal with insulation fill and thickness as indicated for duct

pressure class.

c. Vision panel.

d. Hinges and Latches: 1-by-1-inchbutt or piano hinge and cam latches.

e. Fabricate doors airtight and suitable for duct pressure class.

2. Frame: Galvanized sheet steel, with bend-over tabs and foam gaskets.

3. Number of Hinges and Locks:

a. Access Doors Less Than 12 Inches Square: No hinges and two sash locks.

b. Access Doors up to [18 Inches] Square: [Two hinges] [Continuous] and two sash

locks.

c. Access Doors up to 24 by 48 Inches: [Three hinges] [Continuous] and two

compression latches[ with outside and inside handles].

d. Access Doors Larger Than 24 by 48 Inches: [Four hinges] [Continuous] and two

compression latches with outside and inside handles.

B. Pressure Relief Access Door:

1. Door and Frame Material: Galvanized sheet steel.

2. Door: [Single wall] [Double wall with insulation fill] with metal thickness applicable

for duct pressure class.

3. Operation: Open outward for positive-pressure ducts and inward for negative-pressure

ducts.

4. Factory set at [3.0- to 8.0-inch wg] [10-inch wg] <Insert value>.

5. Doors close when pressures are within set-point range.

6. Hinge: Continuous piano.

7. Latches: Cam.

8. Seal: Neoprene or foam rubber.

9. Insulation Fill: 1-inch-thick, fibrous-glass or polystyrene-foam board.

2.16 DUCT ACCESS PANEL ASSEMBLIES

A. Labeled according to UL 1978 by an NRTL.

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B. Panel and Frame: Minimum thickness [0.0528-inch carbon] [0.0428-inch stainless] steel.

C. Fasteners: [Carbon] [Stainless] steel. Panel fasteners shall not penetrate duct wall.

D. Gasket: Comply with NFPA 96; grease-tight, high-temperature ceramic fiber, rated for

minimum 2000 deg F.

E. Minimum Pressure Rating: 10-inch wg, positive or negative.

2.17 FLEXIBLE CONNECTORS

A. Materials: Flame-retardant or noncombustible fabrics.

B. Coatings and Adhesives: Comply with UL 181, Class 1.

C. Metal-Edged Connectors: Factory fabricated with a fabric strip [3-1/2 inches] [5-3/4 inches]

wide attached to two strips of 2-3/4-inch-wide, 0.028-inch-thick, galvanized sheet steel or

0.032-inch-thick aluminum sheets. Provide metal compatible with connected ducts.

D. Indoor System, Flexible Connector Fabric: Glass fabric double coated with neoprene.

1. Minimum Weight: 26 oz./sq. yd..

2. Tensile Strength: 480 lbf/inch in the warp and 360 lbf/inch in the filling.

3. Service Temperature: Minus 40 to plus 200 deg F.

E. Outdoor System, Flexible Connector Fabric: Glass fabric double coated with weatherproof,

synthetic rubber resistant to UV rays and ozone.

1. Minimum Weight: 24 oz./sq. yd..

2. Tensile Strength: 530 lbf/inch in the warp and 440 lbf/inch in the filling.

3. Service Temperature: Minus 50 to plus 250 deg F.

F. High-Temperature System, Flexible Connectors: Glass fabric coated with silicone rubber.

1. Minimum Weight: 16 oz./sq. yd..

2. Tensile Strength: 285 lbf/inch in the warp and 185 lbf/inch in the filling.

3. Service Temperature: Minus 67 to plus 500 deg F.

G. High-Corrosive-Environment System, Flexible Connectors: Glass fabric with chemical-resistant

coating.

1. Minimum Weight: 14 oz./sq. yd..

2. Tensile Strength: 450 lbf/inch in the warp and 340 lbf/inch in the filling.

3. Service Temperature: Minus 67 to plus 500 deg F.

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H. Thrust Limits: Combination coil spring and elastomeric insert with spring and insert in

compression, and with a load stop. Include rod and angle-iron brackets for attaching to fan

discharge and duct.

1. Frame: Steel, fabricated for connection to threaded rods and to allow for a maximum of

30 degrees of angular rod misalignment without binding or reducing isolation efficiency.

2. Outdoor Spring Diameter: Not less than 80 percent of the compressed height of the spring

at rated load.

3. Minimum Additional Travel: 50 percent of the required deflection at rated load.

4. Lateral Stiffness: More than 80 percent of rated vertical stiffness.

5. Overload Capacity: Support 200 percent of rated load, fully compressed, without

deformation or failure.

6. Elastomeric Element: Molded, oil-resistant rubber or neoprene.

7. Coil Spring: Factory set and field adjustable for a maximum of 1/4-inch movement at

start and stop.

2.18 FLEXIBLE DUCTS

A. Noninsulated, Flexible Duct: UL 181, Class 1, 2-ply vinyl film supported by helically wound,

spring-steel wire.

1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 10 to plus 160 deg F.

B. Noninsulated, Flexible Duct: UL 181, Class 1, black polymer film supported by helically

wound, spring-steel wire.

1. Pressure Rating: 4-inch wg positive and 0.5-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 20 to plus 175 deg F.

C. Noninsulated, Flexible Duct: UL 181, Class 1, multiple layers of aluminum laminate supported

by helically wound, spring-steel wire.

1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 20 to plus 210 deg F.

D. Noninsulated, Flexible Duct: UL 181, Class 1, aluminum laminate and polyester film with latex

adhesive supported by helically wound, spring-steel wire.

1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 20 to plus 210 deg F.

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E. Noninsulated, Flexible Duct: UL 181, Class 0, interlocking spiral of aluminum foil.

1. Pressure Rating: 8-inch wg positive or negative.

2. Maximum Air Velocity: 5000 fpm.

3. Temperature Range: Minus 100 to plus 435 deg F.

F. Insulated, Flexible Duct: UL 181, Class 1, 2-ply vinyl film supported by helically wound,

spring-steel wire; fibrous-glass insulation; aluminized vapor-barrier film.

1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 10 to plus 160 deg F.

4. Insulation R-value: Comply with ASHRAE/IESNA 90.1.

G. Insulated, Flexible Duct: UL 181, Class 1, black polymer film supported by helically wound,

spring-steel wire; fibrous-glass insulation; aluminized vapor-barrier film.

1. Pressure Rating: 4-inch wg positive and 0.5-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 20 to plus 175 deg F.

4. Insulation R-Value: Comply with ASHRAE/IESNA 90.1.

H. Insulated, Flexible Duct: UL 181, Class 1, multiple layers of aluminum laminate supported by

helically wound, spring-steel wire; fibrous-glass insulation; aluminized vapor-barrier film.

1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 20 to plus 210 deg F.

4. Insulation R-value: Comply with ASHRAE/IESNA 90.1.

I. Insulated, Flexible Duct: UL 181, Class 1, aluminum laminate and polyester film with latex

adhesive supported by helically wound, spring-steel wire; fibrous-glass insulation; aluminized

vapor-barrier film.

1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.

2. Maximum Air Velocity: 4000 fpm.

3. Temperature Range: Minus 20 to plus 210 deg F.

4. Insulation R-value: Comply with ASHRAE/IESNA 90.1.

J. Insulated, Flexible Duct: UL 181, Class 0, interlocking spiral of aluminum foil; fibrous-glass

insulation; aluminized vapor-barrier film.

1. Pressure Rating: 8-inch wg positive or negative.

2. Maximum Air Velocity: 5000 fpm.

3. Temperature Range: Minus 20 to plus 250 deg F.

4. Insulation R-value: Comply with ASHRAE/IESNA 90.1.

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K. Flexible Duct Connectors:

1. Clamps: [Stainless-steel band with cadmium-plated hex screw to tighten band with a

worm-gear action] [Nylon strap] in sizes 3 through 18 inches, to suit duct size.

2. Non-Clamp Connectors: [Adhesive] [Liquid adhesive plus tape] [Adhesive plus sheet

metal screws].

2.19 DUCT ACCESSORY HARDWARE

A. Instrument Test Holes: Cast iron or cast aluminum to suit duct material, including screw cap

and gasket. Size to allow insertion of pitot tube and other testing instruments and of length to

suit duct-insulation thickness.

B. Adhesives: High strength, quick setting, neoprene based, waterproof, and resistant to gasoline

and grease.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install duct accessories according to applicable details in SMACNA's "HVAC Duct

Construction Standards - Metal and Flexible" for metal ducts and in NAIMA AH116, "Fibrous

Glass Duct Construction Standards," for fibrous-glass ducts.

B. Install duct accessories of materials suited to duct materials; use galvanized-steel accessories in

galvanized-steel and fibrous-glass ducts, stainless-steel accessories in stainless-steel ducts, and

aluminum accessories in aluminum ducts.

C. Install [backdraft] [control] dampers at inlet of exhaust fans or exhaust ducts as close as

possible to exhaust fan unless otherwise indicated.

D. Install volume dampers at points on supply, return, and exhaust systems where branches extend

from larger ducts. Where dampers are installed in ducts having duct liner, install dampers with

hat channels of same depth as liner, and terminate liner with nosing at hat channel.

1. Install steel volume dampers in steel ducts.

2. Install aluminum volume dampers in aluminum ducts.

E. Set dampers to fully open position before testing, adjusting, and balancing.

F. Install test holes at fan inlets and outlets and elsewhere as indicated.

G. Install fire[ and smoke] dampers according to UL listing.

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H. Install duct security bars. Construct duct security bars from 0.164-inchsteel sleeve, continuously

welded at all joints and 1/2-inch-diameter steel bars, 6 inches o.c. in each direction in center of

sleeve. Weld each bar to steel sleeve and each crossing bar. Weld 2-1/2-by-2-1/2-by-1/4-inch

steel angle to 4 sides and both ends of sleeve. Connect duct security bars to ducts with flexible

connections. Provide 12-by-12-inch hinged access panel with cam lock in duct in each side of

sleeve.

I. Connect ducts to duct silencers [with flexible duct connectors] [rigidly].

J. Install duct access doors on sides of ducts to allow for inspecting, adjusting, and maintaining

accessories and equipment at the following locations:

1. On both sides of duct coils.

2. Upstream[ and downstream] from duct filters.

3. At outdoor-air intakes and mixed-air plenums.

4. At drain pans and seals.

5. Downstream from manual volume dampers, control dampers, backdraft dampers, and

equipment.

6. Adjacent to and close enough to fire or smoke dampers, to reset or reinstall fusible links.

Access doors for access to fire or smoke dampers having fusible links shall be pressure

relief access doors and shall be outward operation for access doors installed upstream

from dampers and inward operation for access doors installed downstream from dampers.

7. At each change in direction and at maximum 50-foot spacing.

8. Upstream[ and downstream] from turning vanes.

9. Upstream or downstream from duct silencers.

10. Control devices requiring inspection.

11. Elsewhere as indicated.

K. Install access doors with swing against duct static pressure.

L. Access Door Sizes:

1. One-Hand or Inspection Access: 8 by 5 inches.

2. Two-Hand Access: 12 by 6 inches.

3. Head and Hand Access: 18 by 10 inches.

4. Head and Shoulders Access: 21 by 14 inches.

5. Body Access: 25 by 14 inches.

6. Body plus Ladder Access: 25 by 17 inches.

M. Label access doors according to Section 230553 "Identification for HVAC Piping and

Equipment" to indicate the purpose of access door.

N. Install flexible connectors to connect ducts to equipment.

O. For fans developing static pressures of 5-inch wg and more, cover flexible connectors with

loaded vinyl sheet held in place with metal straps.

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2016-07-20

P. Connect terminal units to supply ducts[ directly or] with maximum [12-inch] <Insert value>

lengths of flexible duct. Do not use flexible ducts to change directions.

Q. Connect diffusers or light troffer boots to ducts[ directly or] with maximum [60-inch] <Insert

value> lengths of flexible duct clamped or strapped in place.

R. Connect flexible ducts to metal ducts with [adhesive] [liquid adhesive plus tape] [draw

bands] [adhesive plus sheet metal screws].

S. Install duct test holes where required for testing and balancing purposes.

T. Install thrust limits at centerline of thrust, symmetrical on both sides of equipment. Attach thrust

limits at centerline of thrust and adjust to a maximum of 1/4-inch movement during start and

stop of fans.

3.2 FIELD QUALITY CONTROL

A. Tests and Inspections:

1. Operate dampers to verify full range of movement.

2. Inspect locations of access doors and verify that purpose of access door can be

performed.

3. Operate fire, smoke, and combination fire and smoke dampers to verify full range of

movement and verify that proper heat-response device is installed.

4. Inspect turning vanes for proper and secure installation.

5. Operate remote damper operators to verify full range of movement of operator and

damper.

END OF SECTION 233300

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SECTION 23 36 00

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:1. Shutoff, single-duct air terminal units.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of the following products, including rated capacities, furnished specialties, sound-power ratings, and accessories.

1. Air terminal units.2. Liners and adhesives.3. Sealants and gaskets.

B. Shop Drawings: For air terminal units. Include plans, elevations, sections, details, and attachments to other work.

1. Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

2. Wiring Diagrams: For power, signal, and control wiring.3. Hangers and supports, including methods for duct and building attachment and vibration

isolation.

1.4 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Reflected ceiling plans, drawn to scale, on which the following items are shown and coordinated with each other, using input from Installers of the items involved:

1. Ceiling suspension assembly members.2. Size and location of initial access modules for acoustic tile.3. Ceiling-mounted items including lighting fixtures, diffusers, grilles, speakers, sprinklers,

access panels, and special moldings.

B. Field quality-control reports.

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1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For air terminal units to include in emergency, operation, and maintenance manuals. In addition to items specified in Section 017823 "Operation and Maintenance Data," include the following:

1. Instructions for resetting minimum and maximum air volumes.2. Instructions for adjusting software set points.

1.6 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

1.7 QUALITY ASSURANCE

A. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and Equipment" and Section 7 - "Construction and System Start-Up."

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

2.2 SHUTOFF, SINGLE-DUCT AIR TERMINAL UNITS

A. Basis-of-Design Product: Subject to compliance with requirements, provide product indicated on Drawings or comparable product by one of the following:1. Environmental Technologies, Inc./Johnson Control ETI2. Price Industries.3. Titus.4. Trane; a business of American Standard Companies.

B. Configuration: Volume-damper assembly inside unit casing with control components inside a protective metal shroud.

C. Casing: 22 gauge

1. Casing Lining: Adhesive attached, 1 thick, coated, fibrous-glass duct liner complying with ASTM C 1071, and having a maximum flame-spread index of 25 and a maximum smoke-developed index of 50, for both insulation and adhesive, when tested according to ASTM E 84.a. Cover liner with nonporous foil and perforated metal.

2. Air Inlet: Round stub connection or S-slip and drive connections for duct attachment.3. Air Outlet: S-slip and drive connections.4. Access: Removable panels for access to parts requiring service, adjustment, or

maintenance; with airtight gasket.

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5. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in ASHRAE 62.1.

D. Volume Damper: Galvanized steel with peripheral gasket and self-lubricating bearings. Nylon bearings are not acceptable.

1. Maximum Damper Leakage: ARI 880 rated, 3 percent of nominal airflow at 3-inch wg inlet static pressure.

2. Damper Position: Normally open.

E. Direct Digital Controls: Bidirectional damper operators and microprocessor-based controller and room sensor. Factory mounted.

1. Damper Actuator: 24 V2. Terminal Unit Controller: Pressure-independent, variable-air-volume controller with

electronic airflow transducer with multipoint velocity sensor at air inlet, factory calibrated to minimum and maximum air volumes, and having the following features:

a. Occupied and unoccupied operating mode.b. Remote reset of airflow setpointc. Adjusting and monitoring with portable terminal.

F. Control Sequence: The unit will modulate the air damper to maintain the ventilation setpoint. The BAS system will alarm the user when the airflow varies from setpoint by more than 5%.

2.3 HANGERS AND SUPPORTS

A. Hanger Rods for Noncorrosive Environments: Cadmium-plated steel rods and nuts.

B. Hanger Rods for Corrosive Environments: Electrogalvanized, all-thread rods or galvanized rods with threads painted with zinc-chromate primer after installation.

C. Steel Cables: Galvanized steel complying with ASTM A 603.

D. Steel Cable End Connections: Cadmium-plated steel assemblies with brackets, swivel, and bolts designed for duct hanger service; with an automatic-locking and clamping device.

E. Air Terminal Unit Attachments: Sheet metal screws, blind rivets, or self-tapping metal screws; compatible with duct materials.

F. Trapeze and Riser Supports: Steel shapes and plates for units with steel casings; aluminum for units with aluminum casings.

2.4 SOURCE QUALITY CONTROL

A. Factory Tests: Test assembled air terminal units according to ARI 880.

1. Label each air terminal unit with plan number, nominal airflow, maximum and minimum factory-set airflows, and ARI certification seal.

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PART 3 - EXECUTION

3.1 INSTALLATION

A. Install air terminal units according to NFPA 90A, "Standard for the Installation of Air Conditioning and Ventilating Systems."

B. Install air terminal units level and plumb. Maintain sufficient clearance for normal service and maintenance.

3.2 HANGER AND SUPPORT INSTALLATION

A. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Chapter 5, "Hangers and Supports."

B. Building Attachments: Concrete inserts, powder-actuated fasteners, or structural-steel fasteners appropriate for construction materials to which hangers are being attached.

1. Where practical, install concrete inserts before placing concrete.2. Install powder-actuated concrete fasteners after concrete is placed and completely cured.3. Use powder-actuated concrete fasteners for standard-weight aggregate concretes and

for slabs more than 4 inches thick.4. Do not use powder-actuated concrete fasteners for lightweight-aggregate concretes and

for slabs less than 4 inches thick.5. Do not use powder-actuated concrete fasteners for seismic restraints.

C. Hangers Exposed to View: Threaded rod and angle or channel supports.

D. Install upper attachments to structures. Select and size upper attachments with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used.

3.3 CONNECTIONS

A. Connect ducts to air terminal units according to Section 233113 "Metal Ducts."

B. Make connections to air terminal units with flexible connectors complying with requirements in Section 233300 "Air Duct Accessories."

3.4 IDENTIFICATION

A. Label each air terminal unit with plan number, nominal airflow, and maximum and minimum factory-set airflows. Comply with requirements in Section 230553 "Identification for HVAC Piping and Equipment" for equipment labels and warning signs and labels.

3.5 FIELD QUALITY CONTROL

A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

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B. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections.

C. Perform tests and inspections.

1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing.

D. Tests and Inspections:

1. After installing air terminal units and after electrical circuitry has been energized, test for compliance with requirements.

2. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.

3. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

E. Air terminal unit will be considered defective if it does not pass tests and inspections.

F. Prepare test and inspection reports.

3.6 STARTUP SERVICE

A. Perform startup service.

1. Complete installation and startup checks according to manufacturer's written instructions.2. Verify that inlet duct connections are as recommended by air terminal unit manufacturer

to achieve proper performance.3. Verify that controls and control enclosure are accessible.4. Verify that control connections are complete.5. Verify that nameplate and identification tag are visible.6. Verify that controls respond to inputs as specified.

3.7 DEMONSTRATION

A. Train Owner's maintenance personnel to adjust, operate, and maintain air terminal units.

END OF SECTION 233600

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SECTION 23 73 13MODULAR INDOOR CENTRAL-STATION AIR-HANDLING UNITS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions.

B. UNF Standards

1.2 SUMMARY

A. Section Includes:1. Variable-air-volume, single-zone air-handling units.

1.3 PERFORMANCE REQUIREMENTS

A. Delegated Design: Design vibration isolation and seismic-restraint details, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.

B. Structural Performance: Casing panels shall be 2” thick self-supporting and capable of withstanding 125 percent of internal static pressures indicated, without panel joints exceeding a deflection of L/240 where "L" is the unsupported span length within completed casings.

1.4 ACTION SUBMITTALS

A. Product Data: For each air-handling unit indicated.

1. Unit dimensions and weight.2. Cabinet material, metal thickness, finishes, insulation, and accessories.3. Fans:

a. Certified fan-performance curves with system operating conditions indicated.

b. Certified fan-sound power ratings.c. Fan construction and accessories.d. Motor ratings, electrical characteristics, and motor accessories.

4. Certified coil-performance ratings with system operating conditions indicated.5. Dampers, including housings, linkages, and operators.6. Filters with performance characteristics.

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1.5 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Floor plans and other details, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved:

1. Mechanical-room layout and relationships between components and adjacent structural and mechanical elements.

2. Support location, type, and weight.3. Field measurements.

B. Source quality-control reports.

C. Field quality-control reports.

1.6 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For air-handling units to include in emergency, operation, and maintenance manuals.

1.7 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

1. Filters: One set(s) for each air-handling unit.2. Gaskets: One set(s) for each access door.

1.8 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. NFPA Compliance: Comply with NFPA 90A for design, fabrication, and installation of air-handling units and components.

C. ARI Certification: Air-handling units and their components shall be factory tested according to ARI 430, "Central-Station Air-Handling Units," and shall be listed and labeled by ARI.

D. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and Equipment" and Section 7 - "Construction and Startup."

E. ASHRAE/IESNA 90.1 Compliance: Applicable requirements in ASHRAE/IESNA 90.1, Section 6 - "Heating, Ventilating, and Air-Conditioning."

F. Comply with NFPA 70.

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1.9 COORDINATION

A. Coordinate sizes and locations of concrete bases with actual equipment provided.

B. Coordinate sizes and locations of structural-steel support members, if any, with actual equipment provided.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis-of-Design Product: Subject to compliance with requirements, provide product indicated on Drawings or comparable product by one of the following:1. McQuay International2. Trane; American Standard Inc.3. YORK International Corporation.4. Temtrol

2.2 UNIT CASINGS

A. General Fabrication Requirements for Casings:

1. Forming: Form walls, roofs, and floors with at least two breaks at each joint.2. 2” double wall construction with an inner galvanized liner. 3. Casing Joints: Sheet metal screws or pop rivets.4. Sealing: Seal all joints with water-resistant sealant.5. Factory Finish for Galvanized-Steel Casings: Apply manufacturer's standard

primer immediately after cleaning and pretreating.6. Factory Finish for Galvanized-Steel Casings: Immediately after cleaning and

pretreating, apply manufacturer's standard two-coat, baked-on enamel finish, consisting of prime coat and thermosetting topcoat.

7. Casing Coating: Powder-baked enamel.8. Airstream Surfaces: Surfaces in contact with the airstream shall comply with

requirements in ASHRAE 62.1.9. AHU floor to be aluminum diamond treadplate .125” thickness.

B. Casing Insulation and Adhesive:

1. Injected foam insulation with minimum R-13 R-value.

C. Inspection and Access Panels and Access Doors:

1. Panel and Door Fabrication: Formed and reinforced, double-wall and insulated panels of same materials and thicknesses as casing.

2. Inspection and Access Panels:

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a. Fasteners: Two or more camlock type for panel lift-out operation. Arrangement shall allow panels to be opened against air-pressure differential.

b. Gasket: Neoprene, applied around entire perimeters of panel frames.c. Size: Large enough to allow inspection and maintenance of air-handling

unit's internal components.d. Provide hinged doors with windows for coils, fan and air plenums.

3. Access Doors:

a. Hinges: A minimum of two stainless-steel piano hinge and two wedge-lever-type latches, operable from inside and outside. Arrange doors to be opened against air-pressure differential.

b. Gasket: Neoprene, applied around entire perimeters of panel frames.c. Size: At least 18 inches wide by full height of unit casing up to a maximum

height of 72 inches.

4. Locations and Applications:

a. Fan Section: Doors and windows.b. Access Section: Doors and windows.c. Coil Section: Doors and windows.d. Filter Section: Doors and windows.e. Mixing Section: Doors and windows.

5. Service Light: 100-W vaporproof fixture with switched junction box located outside adjacent to door.

a. Locations: Each section accessed with door.

D. Condensate Drain Pans:

1. Fabricated with two percent slope in at least two planes to collect condensate from cooling coils (including coil piping connections, coil headers, and return bends) and from humidifiers and to direct water toward drain connection.

a. Length: Extend drain pan downstream from leaving face to comply with ASHRAE 62.1.

b. Depth: A minimum of 2 inches deep.2. Double-wall, stainless-steel sheet with space between walls filled with foam

insulation and moisture-tight seal.3. Drain Connection: Located at lowest point of pan and sized to prevent overflow.

Terminate with threaded nipple on one end of pan.4. Units with stacked coils shall have an intermediate drain pan to collect

condensate from top coil.5. In runaround configuration, provide drain pans below both preheat and reheat

coil sections.

E. Air-Handling-Unit Mounting Frame: Formed galvanized-steel channel or structural channel supports, designed for low deflection, welded with integral lifting lugs.

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2.3 FAN, DRIVE, AND MOTOR SECTION

A. Units are to be provided with dual direct drive plenum fans as scheduled.

B. Fan and Drive Assemblies: Statically and dynamically balanced and designed for continuous operation at maximum-rated fan speed and motor horsepower.

1. Shafts: Designed for continuous operation at maximum-rated fan speed and motor horsepower, and with field-adjustable alignment.

a. Turned, ground, and polished hot-rolled steel with keyway. Ship with a protective coating of lubricating oil.

b. Designed to operate at no more than 70 percent of first critical speed at top of fan's speed range.

C. Plenum Fan Housings: Steel frame and panel; fabricated without fan scroll and volute housing.

D. Fan Shaft Bearings:

1. Prelubricated and Sealed, Ball Bearings: Self-aligning, pillow-block type with a rated life of 120,000 hours according to ABMA 9.

E. Discharge Dampers: Heavy-duty steel assembly with channel frame and sealed ball bearings, and opposed blades constructed of two plates formed around and welded to shaft, with blades linked out of air stream to single control lever.

F. Internal Vibration Isolation: Fans shall be factory mounted with manufacturer's standard restrained vibration isolation mounting devices.

G. Motor: Comply with NEMA designation, temperature rating, service factor, enclosure type, and efficiency requirements for motors specified in Section 230513 "Common Motor Requirements for HVAC Equipment."

1. Enclosure Type: Totally enclosed, fan cooled.2. NEMA Premium (TM) efficient motors as defined in NEMA MG 1.3. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven

load will not require motor to operate in service factor range above 1.0.4. Controllers, Electrical Devices, and Wiring: Comply with requirements for

electrical devices and connections specified in electrical Sections.5. Mount unit-mounted disconnect switches on exterior of unit.

H. Variable Frequency Controllers: refer to VFD Specification

2.4 COIL SECTION

A. General Requirements for Coil Section:

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1. Comply with ARI 410.2. Fabricate coil section to allow removal and replacement of coil for maintenance

and to allow in-place access for service and maintenance of coil(s).3. Coils shall not act as structural component of unit.4. Coating: Coils exposed to unconditioned outside air shall be dipped and baked

with Bronze Glow - Husky Coil Coat. Coils shall ship as an assembled section from the factory to be coated. Field application is not acceptable.a. Special Warranty: 5 years from date of Substantial Completion on coating and coil.

5. Provide a mimimum of 2 feet of clearance between coil faces on both heating and cooling

coils for cleaning.

6. Coil headers shall be sealed to the casing with rubber gaskets.

7. Coils shall be seamless .035-inch wall thickness copper, expanded into .0095 inch thick

aluminum fins with stainless steal frames.

2.5 AIR FILTRATION SECTION

A. General Requirements for Air Filtration Section:

1. Comply with NFPA 90A.2. Provide minimum arrestance according to ASHRAE 52.1, and a minimum

efficiency reporting value (MERV) according to ASHRAE 52.2.3. Provide filter holding frames arranged for flat or angular orientation, with access

doors on both sides of unit. Filters shall be removable from one side or lifted out from access plenum.

B. Extended-Surface, Disposable Panel Filters:

1. Factory-fabricated, dry, extended-surface type.2. Thickness: 2 inches (50 mm).3. Arrestance (ASHRAE 52.1): 90.4. Merv (ASHRAE 52.2): 7.5. Media: Fibrous material formed into deep-V-shaped pleats and held by self-

supporting wire grid.6. Media-Grid Frame: Galvanized steel.7. Mounting Frames: Welded, galvanized steel, with gaskets and fasteners, suitable

for bolting together into built-up filter banks.

C. Extended-Surface, Nonsupported-Media Filters:

1. Factory-fabricated, dry, extended-surface, self-supporting type.2. Arrestance (ASHRAE 52.1): 95.3. Merv (ASHRAE 52.2): 13.4. Media: Fibrous material constructed so individual pleats are maintained in

tapered form by flexible internal supports under rated-airflow conditions.5. Filter-Media Frame: Galvanized steel.6. Mounting Frames: Welded, galvanized steel, with gaskets and fasteners, suitable

for bolting together into built-up filter banks with space for prefilter.

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D. Filter Gage:

1. 3-1/2-inch diameter, diaphragm-actuated dial in metal case.2. Vent valves.3. Black figures on white background.4. Front recalibration adjustment.5. 2 percent of full-scale accuracy.6. Range: 0- to 2.0-inch wg .7. Accessories: Static-pressure tips with integral compression fittings, 1/4-inch

plastic tubing, and 2- or 3-way vent valves.8. Indicator flags

2.6 DAMPERS

A. General Requirements for Dampers: Leakage rate, according to AMCA 500, "Laboratory Methods for Testing Dampers for Rating," shall not exceed 2 percent of air quantity at 2000-fpm face velocity through damper and 4-inch wg pressure differential.

B. Damper Operators: Comply with requirements in Section 230900 "Instrumentation and Control for HVAC."

C. Electronic Damper Operators:

1. Direct-coupled type designed for minimum 60,000 full-stroke cycles at rated torque.

2. Electronic damper position indicator shall have visual scale indicating percent of travel and 2- to 10-V dc, feedback signal.

3. Operator Motors:

a. Comply with NEMA designation, temperature rating, service factor, enclosure type, and efficiency requirements for motors specified in Section 230513 "Common Motor Requirements for HVAC Equipment."

b. Size to operate with sufficient reserve power to provide smooth modulating action or two-position action.

c. Permanent Split-Capacitor or Shaded-Pole Type: Gear trains completely oil immersed and sealed. Equip spring-return motors with integral spiral-spring mechanism in housings designed for easy removal for service or adjustment of limit switches, auxiliary switches, or feedback potentiometer.

4. Nonspring-Return Motors for Dampers Larger Than 25 Sq. Ft.Size for running torque of 150 in. x lbf and breakaway torque of 300 in. x lbf

5. Spring-Return Motors for Dampers Larger Than 25 Sq. Ft: Size for running and breakaway torque of 150 in. x lbf

6. Size dampers for running torque calculated as follows:

a. Parallel-Blade Damper with Edge Seals: 7 inch-lb/sq. ft. of damper.b. Opposed-Blade Damper with Edge Seals: 5 inch-lb/sq. ft. of damper.c. Parallel-Blade Damper without Edge Seals: 4 inch-lb/sq. ft of damper.d. Opposed-Blade Damper without Edge Seals: 3 inch-lb/sq. ft. of damper.

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e. Dampers with 2- to 3-Inch wg of Pressure Drop or Face Velocities of 1000 to 2500 fpm: Increase running torque by 1.5.

f. Dampers with 3- to 4-Inch wg of Pressure Drop or Face Velocities of 2500 to 3000 fpm :Increase running torque by 2.0.

7. Coupling: V-bolt and V-shaped, toothed cradle.8. Overload Protection: Electronic overload or digital rotation-sensing circuitry.9. Fail-Safe Operation: Mechanical, spring-return mechanism with external, manual

gear release on nonspring-return actuators.10. Power Requirements (Two-Position Spring Return): 24-V ac.11. Power Requirements (Modulating): Maximum 10 VA at 24-V ac or 8 W at 24-V

dc.12. Proportional Signal: 2- to 10-V dc or 4 to 20 mA, and 2- to 10-V dc position

feedback signal.13. Temperature Rating: Minus 22 to plus 122 deg F14. Run Time: 30 seconds.

D. Outdoor- and Return-Air Dampers: Low-leakage, double-skin, airfoil-blade, aluminum dampers with compressible jamb seals and extruded-vinyl blade edge seals in parallel-blade arrangement with stainless steel operating rods rotating in stainless-steel sleeve bearings mounted in a single aluminum frame, and with operating rods connected with a common linkage. Leakage rate shall not exceed 3 cfm/sq. ft. at 1-inch wg

E. Mixing Section: Multiple-blade, air-mixer assembly located immediately downstream of mixing section.

F. Combination Filter and Mixing Section:

1. Cabinet support members shall hold 2-inch- thick, pleated, flat, permanent or throwaway filters.

2. Multiple-blade, air-mixer assembly shall mix air to prevent stratification, located immediately downstream of mixing box.

2.7 SOURCE QUALITY CONTROL

A. Fan Sound-Power Level Ratings: Comply with AMCA 301, "Methods for Calculating Fan Sound Ratings from Laboratory Test Data." Test fans according to AMCA 300, "Reverberant Room Method for Sound Testing of Fans." Fans shall bear AMCA-certified sound ratings seal.

B. Fan Performance Rating: Factory test fan performance for airflow, pressure, power, air density, rotation speed, and efficiency. Rate performance according to AMCA 210, "Laboratory Methods of Testing Fans for Aerodynamic Performance Rating."

C. Water Coils: Factory tested to 300 psig according to ARI 410 and ASHRAE 33.

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PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.

B. Examine casing insulation materials and filter media before air-handling unit installation. Reject insulation materials and filter media that are wet, moisture damaged, or mold damaged.

C. Examine roughing-in for steam, hydronic, and condensate drainage piping systems and electrical services to verify actual locations of connections before installation.

D. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Equipment Mounting:

1. Install air-handling units on cast-in-place concrete equipment bases.

B. Arrange installation of units to provide access space around air-handling units for service and maintenance.

C. Do not operate fan system until filters (temporary or permanent) are in place. Replace temporary filters used during construction and testing, with new, clean filters.

D. Install filter-gage, static-pressure taps upstream and downstream of filters. Mount filter gages on outside of filter housing or filter plenum in accessible position. Provide filter gages on filter banks, installed with separate static-pressure taps upstream and downstream of filters.

3.3 CONNECTIONS

A. Comply with requirements for piping specified in other Sections. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to air-handling unit to allow service and maintenance.

C. Connect piping to air-handling units mounted on vibration isolators with flexible connectors.

D. Hot- and Chilled-Water Piping: Comply with applicable requirements indicated on the specifications on drawings.

E. Connect duct to air-handling units with flexible connections.

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3.4 FIELD QUALITY CONTROL

A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections.

B. Perform tests and inspections.

1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing.

C. Tests and Inspections:

1. Leak Test: After installation, fill water and steam coils with water, and test coils and connections for leaks.

2. Fan Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation.

3. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

D. Air-handling unit or components will be considered defective if unit or components do not pass tests and inspections.

E. Prepare test and inspection reports.

3.5 STARTUP SERVICE

A. Perform startup service.

1. Complete installation and startup checks according to manufacturer's written instructions.

2. Verify that shipping, blocking, and bracing are removed.3. Verify that unit is secure on mountings and supporting devices and that

connections to piping, ducts, and electrical systems are complete. Verify that proper thermal-overload protection is installed in motors, controllers, and switches.

4. Verify proper motor rotation direction, free fan wheel rotation, and smooth bearing operations.

5. Verify that bearings and other moving parts are lubricated with factory-recommended lubricants.

6. Verify that zone dampers fully open and close for each zone.7. Verify that outdoor- and return-air mixing dampers open and close, and maintain

minimum outdoor-air setting.8. Comb coil fins for parallel orientation.9. Install new, clean filters.10. Verify that manual and automatic volume control and fire and smoke dampers in

connected duct systems are in fully open position.

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B. Starting procedures for air-handling units include the following:

1. Energize motor; verify proper operation of motor and fan wheel.2. Measure and record motor electrical values for voltage and amperage.3. Manually operate dampers from fully closed to fully open position and record fan

performance.

3.6 ADJUSTING

A. Adjust damper linkages for proper damper operation.

B. Comply with requirements on the specifications on drawings for T&B requirements.

3.7 CLEANING

A. After completing system installation and testing, adjusting, and balancing air-handling unit and air-distribution systems and after completing startup service, clean air-handling units internally to remove foreign material and construction dirt and dust. Clean fan wheels, cabinets, dampers, coils, and filter housings, and install new, clean filters.

3.8 DEMONSTRATION

A. Train Owner's maintenance personnel to adjust, operate, and maintain air-handling units.

END OF SECTION 237313