SECTION COMMON WORK RESULTS FOR HVAC

Transcription

1 PART 1 GENERAL 1.01 SUMMARY SECTION COMMON WORK RESULTS FOR HVAC A. This Section includes the following: 1. Submittals 2. Coordinated drawings. 3. Excavation. 4. Permits, inspections, codes, and fees. 5. Public utilities. 6. Record documents. 7. Maintenance manuals. 8. Training. 9. Piping materials and installation instructions common to most piping systems. 10. Mechanical sleeve seals. 11. Sleeves. 12. Escutcheons. 13. Piping systems common requirements. 14. Equipment installation requirements common to equipment sections. 15. Painting and finishing. 16. Metal supports and anchors. 17. Cutting and patching. 18. Final inspection DEFINITIONS A. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred spaces, pipe and duct chases, unheated spaces immediately below roof, spaces above ceilings, unexcavated spaces, crawlspaces, and tunnels. B. Exposed, Interior Installations: Exposed to view indoors. Examples include finished occupied spaces and mechanical equipment rooms. C. Exposed, Exterior Installations: Exposed to view outdoors or subject to outdoor ambient temperatures and weather conditions. Examples include rooftop locations. D. Concealed, Interior Installations: Concealed from view and protected from physical contact by building occupants. Examples include above ceilings and chases. 1. Concealed, Exterior Installations: Concealed from view and protected from weather conditions and physical contact by building occupants but subject to outdoor ambient temperatures. Examples include installations within unheated shelters. 2. The following are industry abbreviations for plastic materials: a. PE: Polyethylene plastic. b. PVC: Polyvinyl chloride plastic. c. CPVC: Chlorinated polyvinyl chloride plastic. 3. The following are industry abbreviations for rubber materials: a. EPDM: Ethylene-propylene-diene terpolymer rubber. b. NBR: Acrylonitrile-butadiene rubber SUBMITTALS A. General: Follow the procedures specified in Division 1 Section SUBMITTAL PROCEDURES. B. General requirements for each submittal shall include, but shall not be limited to the following: 1. Index sheet. 2. Contractors name and review stamp. 3. Subcontractors name and review stamp. 4. Project name. 5. Function of the equipment to be furnished. COMMON WORK RESULTS FOR HVAC

2 6. Equipment identification, from Contract Documents. 7. Picture of the equipment. 8. Ratings, dimensions and service clearances. 9. Arrangements to be furnished. 10. Electrical characteristics. 11. Data sheets of accessories to be furnished. 12. Identification, from Contract Documents. 13. Applicable specification section number. a. Submittals that do not bear the Mechanical Subcontractor s name and review stamp will be returned without being reviewed. b. Selected sections of this specification do not require any submittals. Submit only the requested data identification under the Submittals portion of those sections requiring submittals. Unrequested submittals will not be processed or reviewed. c. Product data sheets that depict various different items shall clearly identify the specific item(s) being submitted for review QUALITY ASSURANCE A. Steel Support Welding: Qualify processes and operators according to AWS D1.1, "Structural Welding Code--Steel." 1.05 DELIVERY, STORAGE, AND HANDLING A. Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris, and moisture. B. Store plastic pipes protected from direct sunlight. Support to prevent sagging and bending COORDINATION DRAWINGS A. Prepare coordination drawings according to Division 1 Section Submittals to a ¼ inch equals 1 foot scale or larger. Detail major elements, components, and systems of mechanical equipment and materials in relationship with other systems, installations, and building components. Show space requirements for installation and access. Show where sequence and coordination of installations are important to the efficient flow of the Work. Failure to prepare coordination drawings will result in the Contractor(s) assuming responsibility for any changes involving relocation of equipment, piping, devices, etc. This relocation shall come as no additional cost to the Owner. 1. Contractor is responsible to coordinate installation and review functionality of the MEP equipment at all phases during construction process to ensure that the facility functions as intended by the contract documents. The Contractor shall coordinate involvement of all parties throughout the construction process so that the installation of all building systems and assemblies comply with the requirements of the contract and it is achieved early enough in the construction phase to assure full operational check-out, testing and adjustment prior to Substantial Completion. The Contractor is responsible for documenting and demonstrating operational performance of all integrated systems within the project. All reports such as field testing, pre-construction testing, equipment start-up test will be bound in duplicate and submitted to the Architect for the final review process. 2. Welder certificates signed by Contractor certifying that welders comply with requirements specified under the Quality Assurance Article COORDINATION A. Arrange for pipe spaces, chases, slots, and openings in building structure during progress of construction, to allow for HVAC installations. B. Coordinate installation of required supporting devices and set sleeves in poured-in-place concrete and other structural components as they are constructed. C. Coordinate requirements for access panels and doors for HVAC items requiring access that are concealed behind finished surfaces. COMMON WORK RESULTS FOR HVAC

3 D. Sequence, coordinate, and integrate installations of mechanical materials and equipment for efficient flow of the Work. Coordinate installation of large equipment requiring positioning before closing in building. E. Coordinate connection of mechanical systems with exterior underground and overhead utilities and services. Comply with requirements of governing regulations, franchised service companies, and controlling agencies. F. Coordinate installation of identifying devices after completing covering and painting, if devices are applied to surfaces. Install identifying devices before installing acoustical ceilings and similar concealment EXCAVATION A. Provide all excavation, trenching, backfilling, etc. as required for the installation of electrical work. B. Conditions Affecting Excavations: The following project conditions apply: 1. Maintain and protect existing building services which transit the area affected by excavation operations. 2. Existing Utilities: Locate existing underground utilities in excavation areas prior to commencing excavation work. If utilities are indicated to remain, support and protect existing services during excavation operations. 3. Uncharted or Incorrectly Charted Utilities: Contact Owner s Representative immediately for instructions. 4. Restoration: Upon completion of installation of work, existing areas disturbed by excavation operations shall be restored to match the appearance, quality and condition of adjacent areas and surfaces. Restoration of a disturbed area shall include, but shall not be limited to, backfilling, compacting, finish grading, seeding, paving, etc. as required for complete restoration. Comply with the requirements of Division 2 when performing restoration work PERMITS, INSPECTIONS, CODES AND FEES A. Comply with all the latest Federal, State, City and utility company rules, regulations, and ordinances having jurisdiction over this work. These codes shall supersede the specifications and drawings PUBLIC UTILITIES A. Work of this contract associated with the work of the local utility company shall be installed in strict accordance with the standards of the utility company 1.11 RECORD DOCUMENTS A. Prepare record documents in accordance with the requirements in Division 1 Section PROJECT CLOSEOUT, and the requirements listed herein. B. Obtain a full-size set of blue line prints of contract drawings pertaining to this work immediately upon commencing work. This set of drawings shall be kept on project site at all times and shall be used for recording the following information on a day-to-day basis. C. Contractor shall provide record documents in accordance with Division 1, and such documents shall be approved by the engineer, prior to the authorization for final payment to Contractor. Record drawings shall be certified as to their correctness by the signature of Contractor and shall be stamped or otherwise permanently identified as Record Drawings MAINTENANCE MANUALS A. Prepare maintenance manuals in accordance with Division 1 Section PROJECT CLOSEOUT. In addition to the requirements specified in Division 1, include the following information for equipment items: 1. Description of function, normal operating characteristics and limitations, performance curves, engineering data and tests, and complete nomenclature and commercial numbers of replacement parts. COMMON WORK RESULTS FOR HVAC

4 1.13 TRAINING PART 2 2. Manufacturer s printed operating procedure to include start-up, break-in, and routine and normal operating instructions; regulation, control, stopping, shutdown, and emergency instructions; and summer and winter operating instructions. 3. Maintenance procedures for routine preventative maintenance and troubleshooting, disassembly, repair, and reassembly, aligning and adjusting instructions. 4. Names, addresses, telephone numbers, etc., of local suppliers, factory representatives or service agencies for all major items of equipment and systems. 5. Servicing instructions and lubrication charts and schedules. 6. Software programming manuals. A. Contractors shall provide training, as stated in each section for all equipment at a time and in a fashion agreed upon by Architect/Engineer and Owner. B. Contractor is to be given a minimum of seven (7) days advance notice to Architect/Engineer prior to training. PRODUCTS 2.01 MANUFACTURERS A. In other Sections Part 2 articles where subparagraph titles below introduce lists, the following requirements apply for product selection: 1. Manufacturers listed on Division drawings are the basis of design. Alternate manufacturers listed in Part 2 may be submitted for review by the Engineer with the following provisions: a. Deviations from specified devices, equipment or system: While it is recognized that devices, equipment or systems by other than the first named manufacturer may not be exactly identical, the Contractor shall verify and provide devices, equipment or systems that meet the specified job requirements. All deviations of devices, equipment or systems from the first named manufacturer shall be clearly noted on shop drawing submittal or by cover letter. Engineer reserves the right to reject all devices, equipment or systems that do not meet the specified job requirements. b. Submission of shop drawings will be considered as indicating that space requirements have been reviewed and that submitted equipment will fit space allocated with due concern given to access required for maintenance purposes. c. No extra cost will be allowed due to the effect on other trades when bid is based on products other than first named manufacturers. Coordination responsibility for substituted equipment or use of products other than first named manufacturer shall be that of Contractor furnishing equipment TRANSITION FITTINGS A. Plastic-to-Metal Transition Fittings: One-piece fitting as recommended by manufacturer of piping material PIPE, TUBE, AND FITTINGS A. Refer to individual Division 23 piping Sections for pipe, tube, and fitting materials and joining methods. B. Pipe Threads: ASME B for factory-threaded pipe and pipe fittings MECHANICAL SLEEVE SEALS A. Description: Modular sealing element unit, designed for field assembly, to fill annular space between pipe and sleeve. 1. Manufacturers: a. Advance Products & Systems, Inc. b. Calpico, Inc. c. Metraflex Co. d. Pipeline Seal and Insulator, Inc. COMMON WORK RESULTS FOR HVAC

5 2.05 SLEEVES 2. Sealing Elements: EPDM or NBR interlocking links shaped to fit surface of pipe. Include type and number required for pipe material and size of pipe. 3. Pressure Plates: Plastic or Carbon steel. Include two for each sealing element. 4. Connecting Bolts and Nuts: Carbon steel with corrosion-resistant coating of length required to secure pressure plates to sealing elements. Include one for each sealing element. A. Galvanized-Steel Sheet: inch minimum thickness; round tube closed with welded longitudinal joint. B. Steel Pipe: ASTM A 53, Type E, Grade B, Schedule 40, galvanized, plain ends. C. Stack Sleeve Fittings: Manufactured, cast-iron sleeve with integral clamping flange. Include clamping ring and bolts and nuts for membrane flashing. D. Under deck Clamp: Clamping ring with setscrews. E. Molded PVC: Permanent, with nailing flange for attaching to wooden forms. F. PVC Pipe: ASTM D 1785, Schedule 40. G. Molded PE: Reusable, PE, tapered-cup shaped, and smooth-outer surface with nailing flange for attaching to wooden forms ESCUTCHEONS PART 3 A. Description: Manufactured wall and ceiling escutcheons and floor plates, with an ID to closely fit around pipe, tube, and insulation of insulated piping and an OD that completely covers opening. B. One-Piece, Cast-Brass Type: With setscrew. C. Finish: Polished chrome-plated or rough brass. D. Split Casting, Cast-Brass Type: With concealed hinge and setscrew. 1. Finish: Polished chrome-plated or rough brass. 2. One-Piece, Stamped-Steel Type: With setscrew or spring clips and chrome-plated finish. 3. One-Piece, Floor-Plate Type: Cast-iron floor plate. EXECUTION 3.01 PIPING SYSTEMS - COMMON REQUIREMENTS A. Install piping according to the following requirements and Division 23 Sections specifying piping systems. B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping systems. Indicated locations and arrangements were used to size pipe and calculate friction loss, expansion, pump sizing, and other design considerations. Install piping as indicated unless deviations to layout are approved on Coordination Drawings. C. Install piping in concealed locations, unless otherwise indicated and except in equipment rooms and service areas. D. 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. E. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal. F. Install piping to permit valve servicing. G. Install piping at indicated slopes. H. Install piping free of sags and bends. I. Install fittings for changes in direction and branch connections. J. Install piping to allow application of insulation. K. Select system components with pressure rating equal to or greater than system operating pressure. COMMON WORK RESULTS FOR HVAC

6 L. Install escutcheons for penetrations of walls, ceilings, and floors according to the following: 1. New Piping: a. Insulated Piping: One-piece, stamped-steel type with spring clips. b. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece, stamped-steel type. c. Bare Piping at Ceiling Penetrations in Finished Spaces: One-piece, stamped-steel type and setscrew. d. Bare Piping in Unfinished Service Spaces: One-piece, stamped-steel type with set screw or spring clips. e. Bare Piping in Equipment Rooms: One-piece, stamped-steel type with set screw or spring clips. f. Bare Piping at Floor Penetrations in Equipment Rooms: One-piece, floor-plate type. M. Sleeves are not required for core-drilled holes. N. Permanent sleeves are not required for holes formed by removable PE sleeves. O. Install sleeves for pipes passing through concrete and masonry walls and concrete floor and roof slabs. P. Install sleeves for pipes passing through concrete and masonry walls, gypsum-board partitions, and concrete floor and roof slabs. 1. Cut sleeves to length for mounting flush with both surfaces. a. Exception: Extend sleeves installed in floors of mechanical equipment areas or other wet areas 2 inches above finished floor level. Extend cast-iron sleeve fittings below floor slab as required to secure clamping ring if ring is specified. Q. Install sleeves in new walls and slabs as new walls and slabs are constructed. R. Install sleeves that are large enough to provide 1/4-inch annular clear space between sleeve and pipe or pipe insulation. Use the following sleeve materials: 1. Steel Pipe Sleeves: For pipes smaller than NPS 6. a. Seal space outside of sleeve fittings with grout. b. Except for underground wall penetrations, seal annular space between sleeve and pipe or pipe insulation, using joint sealants appropriate for size, depth, and location of joint. Refer to Division 07 Section "Joint Sealants" for materials and installation. S. Aboveground, Exterior-Wall Pipe Penetrations: Seal penetrations using sleeves and mechanical sleeve seals. Select sleeve size to allow for 1-inch annular clear space between pipe and sleeve for installing mechanical sleeve seals. T. Install steel pipe for sleeves smaller than 6 inches in diameter. U. Install cast-iron "wall pipes" for sleeves 6 inches and larger in diameter. V. Mechanical Sleeve Seal Installation: Select type and number of sealing elements required for pipe material and size. Position pipe in center of sleeve. Assemble mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make watertight seal. W. Underground, Exterior-Wall Pipe Penetrations: Install cast-iron "wall pipes" for sleeves. Seal pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1-inch annular clear space between pipe and sleeve for installing mechanical sleeve seals. X. Mechanical Sleeve Seal Installation: Select type and number of sealing elements required for pipe material and size. Position pipe in center of sleeve. Assemble mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make watertight seal. Y. Fire-Barrier Penetrations: Maintain indicated fire rating of walls, partitions, ceilings, and floors at pipe penetrations. Seal pipe penetrations with firestop materials. Refer to Division 07 Section "Penetration Firestopping" for materials. Z. Verify final equipment locations for roughing-in. COMMON WORK RESULTS FOR HVAC

7 AA. Refer to equipment specifications in other Sections of these Specifications for roughing-in requirements PIPING JOINT CONSTRUCTION A. Join pipe and fittings according to the following requirements and Division 23 Sections specifying piping systems. B. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe. C. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before assembly. D. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube" Chapter, using copper-phosphorus brazing filler metal complying with AWS A PIPING CONNECTIONS A. Make connections according to the following, unless otherwise indicated: 1. Install unions, in piping NPS 2 and smaller, adjacent to each valve and at final connection to each piece of equipment. 2. Install dielectric unions and flanges to connect piping materials of dissimilar metals EQUIPMENT INSTALLATION - COMMON REQUIREMENTS A. Install equipment to allow maximum possible headroom unless specific mounting heights are not indicated. B. Install equipment level and plumb, parallel and perpendicular to other building systems and components in exposed interior spaces, unless otherwise indicated. C. Install HVAC equipment to facilitate service, maintenance, and repair or replacement of components. Connect equipment for ease of disconnecting, with minimum interference to other installations. Extend grease fittings to accessible locations. D. Install equipment to allow right of way for piping installed at required slope PAINTING A. Painting of HVAC systems, equipment, and components is specified in Division 09 Sections "Interior Painting" and "Exterior Painting." B. Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and procedures to match original factory finish ERECTION OF METAL SUPPORTS AND ANCHORAGES A. Provide all supporting steel, not indicated on structural drawings, that is required for installation of mechanical equipment and materials, including angles, channels, beams, etc. to suspend or floor support equipment. B. Field Welding: Comply with AWS D1.1. C. Paint ferrous metal with one coat of an exterior grade primer and then paint with two coats of an exterior grade enamel paint. D. Galvanized metal shall be painted with a cold-galvanizing compound. E. Grind all welds smooth CUTTING AND PATCHING A. General: 1. Perform cutting, fitting, and patching of mechanical equipment and materials required to a. Uncover work to provide for installation of ill-timed work. b. Remove and replace work not conforming to requirements of the Contract Documents. c. Remove samples of installed work as specified for testing. d. Install equipment and materials in existing structures. COMMON WORK RESULTS FOR HVAC

8 e. Upon written instructions from the Architect, uncover and restore work to provide for Architect observation of concealed work. 2. Cut, remove, and legally dispose of selected mechanical equipment, components, and materials as indicated, including but not limited to, removal of mechanical items indicated to be removed and items made obsolete by the new work. 3. Protect the structure, furnishings, finishes, and adjacent materials not indicated or scheduled to be removed. 4. Protection of Installed Work: During cutting and patching operations, protect adjacent installations. 5. Patch existing finished surfaces and building components using new materials, matching existing materials and experienced installers. Installers qualifications refer to the materials and methods required for the surface and building components being patched. a. Refer to Division 1 Section DEFINITIONS AND STANDARDS for definition of experienced Installer FINAL INSPECTION A. Contractor shall review requirements of Contract Documents, inspect work and inform parties involved, of work to be corrected or completed before project can be deemed substantially complete. B. Notify Owner s Representative in writing, when project is substantially complete listing those items of work remaining incomplete and anticipated date, that remaining work will be completed. Final inspection of project will then be scheduled by Architect/Engineer. Architect/Engineer reserves right to cancel and reschedule inspection in event considerable more work remains to be completed or corrected than indicated in written request for inspection. C. Items not completed or found not complying with drawings and specifications by Architect/Engineer will be identified in inspection report by Architect/Engineer. D. Copy of final inspection report will be given to Contractor and deficient items on inspection report shall be corrected. Contractors shall initial and date items on report after corrections have been completed. E. Architect/Engineer will make final check after items have been corrected. Contractor shall be present during final check and shall verify that corrections have been made. END OF SECTION COMMON WORK RESULTS FOR HVAC

9 PART 1 GENERAL 1.01 SUMMARY SECTION HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT A. This Section includes the following hangers and supports for HVAC system piping and equipment: 1. Steel pipe hangers and supports. 2. Metal framing systems. 3. Thermal-hanger shield inserts. 4. Fastener systems. 5. Equipment supports DEFINITIONS A. MSS: Manufacturers Standardization Society for The Valve and Fittings Industry Inc. B. Terminology: As defined in MSS SP-90, "Guidelines on Terminology for Pipe Hangers and Supports." 1.03 PERFORMANCE REQUIREMENTS A. Design supports for multiple pipes, including pipe stands, capable of supporting combined weight of supported systems, system contents, and test water. B. Design equipment supports capable of supporting combined operating weight of supported equipment and connected systems and components. C. Design seismic-restraint hangers and supports for piping and equipment SUBMITTALS A. Product Data: For the following: 1. Steel pipe hangers and supports. B. Welding certificates QUALITY ASSURANCE A. Welding: Qualify procedures and personnel according to ASME Boiler and Pressure Vessel Code: Section IX. PART 2 PRODUCTS 2.01 MANUFACTURERS A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection: 1. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified STEEL PIPE HANGERS AND SUPPORTS A. Description: MSS SP-58, Types 1 through 58, factory-fabricated components. Refer to Part 3 "Hanger and Support Applications" Article for where to use specific hanger and support types. B. Manufacturers: 1. ERICO/Michigan Hanger Co. 2. Globe Pipe Hanger Products, Inc. 3. Grinnell Corp. 4. GS Metals Corp. 5. National Pipe Hanger Corporation. 6. Tolco Inc. C. Galvanized, Metallic Coatings: Pregalvanized or hot dipped. D. Nonmetallic Coatings: Plastic coating, jacket, or liner. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

10 2.03 METAL FRAMING SYSTEMS A. Description: MFMA-3, shop- or field-fabricated pipe-support assembly made of steel channels and other components. B. Manufacturers: 1. B-Line Systems, Inc.; a division of Cooper Industries. 2. ERICO/Michigan Hanger Co.; ERISTRUT Div. 3. GS Metals Corp. 4. Power-Strut Div.; Tyco International, Ltd. 5. Thomas & Betts Corporation. 6. Tolco Inc. 7. Unistrut Corp.; Tyco International, Ltd. C. Coatings: Manufacturer's standard finish, unless bare metal surfaces are indicated. D. Nonmetallic Coatings: Plastic coating, jacket, or liner FASTENER SYSTEMS A. Mechanical-Expansion Anchors: Insert-wedge-type zinc-coated steel, for use in hardened Portland cement concrete with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used. 1. Manufacturers: a. B-Line Systems, Inc.; a division of Cooper Industries. b. Empire Industries, Inc. c. Hilti, Inc. d. ITW Ramset/Red Head. e. MKT Fastening, LLC. f. Powers Fasteners EQUIPMENT SUPPORTS A. Description: Welded, shop- or field-fabricated equipment support made from structural-steel shapes MISCELLANEOUS MATERIALS A. Structural Steel: ASTM A 36/A 36M, steel plates, shapes, and bars; black and galvanized. PART 3 EXECUTION 3.01 HANGER AND SUPPORT APPLICATIONS A. Specific hanger and support requirements are specified in Sections specifying piping systems and equipment. B. Comply with MSS SP-69 for pipe hanger selections and applications that are not specified in piping system Sections. C. Use hangers and supports with galvanized, metallic coatings for piping and equipment that will not have field-applied finish. D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in direct contact with copper tubing. E. Use padded hangers for piping that is subject to scratching. F. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or insulated stationary pipes, NPS 1/2 to NPS Pipe Stanchion Saddles (MSS Type 37): For support of pipes, NPS 4 to NPS 36, with steel pipe base stanchion support and cast-iron floor flange and with U-bolt to retain pipe. 3. Single Pipe Rolls (MSS Type 41): For suspension of pipes, NPS 1 to NPS 30, from 2 rods if longitudinal movement caused by expansion and contraction might occur. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

11 4. Adjustable Roller Hangers (MSS Type 43): For suspension of pipes, NPS 2-1/2 to NPS 20, from single rod if horizontal movement caused by expansion and contraction might occur. G. Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads. 2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations. 3. Swivel Turnbuckles (MSS Type 15): For use with MSS Type 11, split pipe rings. H. Building Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend pipe hangers from concrete ceiling. 2. Top-Beam C-Clamps (MSS Type 19): For use under roof installations with bar-joist construction to attach to top flange of structural shape. 3. Side-Beam or Channel Clamps (MSS Type 20): For attaching to bottom flange of beams, channels, or angles. I. Center-Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams. J. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads are considerable and rod sizes are large. K. C-Clamps (MSS Type 23): For structural shapes. L. Top-Beam Clamps (MSS Type 25): For top of beams if hanger rod is required tangent to flange edge. M. Side-Beam Clamps (MSS Type 27): For bottom of steel I-beams. N. Steel-Beam Clamps with Eye Nuts (MSS Type 28): For attaching to bottom of steel I-beams for heavy loads. O. Linked-Steel Clamps with Eye Nuts (MSS Type 29): For attaching to bottom of steel I-beams for heavy loads, with link extensions. P. Malleable Beam Clamps with Extension Pieces (MSS Type 30): For attaching to structural steel. Q. Welded-Steel Brackets: For support of pipes from below, or for suspending from above by using clip and rod. Use one of the following for indicated loads: 1. Light (MSS Type 31): 750 lb. 2. Medium (MSS Type 32): 1500 lb. 3. Heavy (MSS Type 33): 3000 lb. R. Side-Beam Brackets (MSS Type 34): For sides of steel or wooden beams. S. Plate Lugs (MSS Type 57): For attaching to steel beams if flexibility at beam is required. T. Horizontal Travelers (MSS Type 58): For supporting piping systems subject to linear horizontal movement where headroom is limited. U. Saddles and Shields: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with insulation that matches adjoining insulation. 2. Protection Shields (MSS Type 40): Of length recommended in writing by manufacturer to prevent crushing insulation. 3. Thermal-Hanger Shield Inserts: For supporting insulated pipe HANGER AND SUPPORT INSTALLATION A. Steel Pipe Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers, supports, clamps, and attachments as required to properly support piping from building structure. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

12 B. Trapeze Pipe Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange for grouping of parallel runs of horizontal piping and support together on field-fabricated trapeze pipe hangers. C. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or install intermediate supports for smaller diameter pipes as specified above for individual pipe hangers. D. Field fabricate from ASTM A 36/A 36M, steel shapes selected for loads being supported. Weld steel according to AWS D1.1. E. Metal Framing System Installation: Arrange for grouping of parallel runs of piping and support together on field-assembled metal framing systems. F. Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping. G. Fastener System Installation: 1. Install mechanical-expansion anchors in concrete after concrete is placed and completely cured. Install fasteners according to manufacturer's written instructions. H. Install hangers and supports complete with necessary inserts, bolts, rods, nuts, washers, and other accessories. I. Install hangers and supports to allow controlled thermal and seismic movement of piping systems, to permit freedom of movement between pipe anchors, and to facilitate action of expansion joints, expansion loops, expansion bends, and similar units. J. Install lateral bracing with pipe hangers and supports to prevent swaying. K. Install building attachments within concrete slabs or attach to structural steel. Install additional attachments at concentrated loads, including valves, flanges, and strainers, NPS 2-1/2 and larger and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten inserts to forms and install reinforcing bars through openings at top of inserts. L. Load Distribution: Install hangers and supports so piping live and dead loads and stresses from movement will not be transmitted to connected equipment. M. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and so maximum pipe deflections allowed by ASME B31.1 (for power piping) and ASME B31.9 (for building services piping) are not exceeded. N. Insulated Piping: Comply with the following: O. Attach clamps and spacers to piping. 1. Piping Operating above Ambient Air Temperature: Clamp may project through insulation. 2. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield insert with clamp sized to match OD of insert. 3. Do not exceed pipe stress limits according to ASME B31.1 for power piping and ASME B31.9 for building services piping. P. Install MSS SP-58, Type 39, protection saddles if insulation without vapor barrier is indicated. Fill interior voids with insulation that matches adjoining insulation. 1. Option: Thermal-hanger shield inserts may be used. Include steel weight-distribution plate for pipe NPS 4 and larger if pipe is installed on rollers. Q. Install MSS SP-58, Type 40, protective shields on cold piping with vapor barrier. Shields shall span an arc of 180 degrees. 1. Option: Thermal-hanger shield inserts may be used. Include steel weight-distribution plate for pipe NPS 4 and larger if pipe is installed on rollers. R. Shield Dimensions for Pipe: Not less than the following: 1. NPS 1/4 to NPS 3-1/2: 12 inches long and inch thick. 2. NPS 4: 12 inches long and 0.06 inch thick. 3. NPS 5 and NPS 6: 18 inches long and 0.06 inch thick. S. Insert Material: Length at least as long as protective shield. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

13 3.03 METAL FABRICATIONS A. Cut, drill, and fit miscellaneous metal fabrications for trapeze pipe hangers and equipment supports. B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be shop welded because of shipping size limitations. C. Field Welding: Comply with AWS D1.1 procedures for shielded metal arc welding, appearance and quality of welds, and methods used in correcting welding work, and with the following: D. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. E. Obtain fusion without undercut or overlap. F. Remove welding flux immediately. G. Finish welds at exposed connections so no roughness shows after finishing and contours of welded surfaces match adjacent contours ADJUSTING A. Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve indicated slope of pipe PAINTING A. Touch Up: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces. B. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils. C. Touch Up: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint on miscellaneous metal are specified in Division 09 painting Sections. D. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A 780. END OF SECTION HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

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15 PART 1 MECHANICAL VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT SECTION MECHANICAL VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Special Conditions and Division 1 Specification Sections, apply to this Section SUMMARY A. This Section includes the following: 1. Elastomeric isolation pads and mounts. 2. Restrained spring isolators. 3. Housed spring mounts. 4. Spring hangers. B. Intent 1. All mechanical equipment, piping, and ductwork as noted on the equipment schedule or in the specification shall be mounted on vibration isolators to prevent the transmission of vibration and mechanically transmitted sound to the building structure. Vibration isolators shall be selected in accordance with the weight distribution so as to produce reasonably uniform deflections. 2. All isolators and isolation materials shall be of the same manufacturer and shall be certified by the manufacturer. C. The work in this section includes, but is not limited to the following: 1. Vibration isolation for piping, ductwork, and equipment. 2. Flexible piping connections. 3. Ductwork 4. Fans (All Types) 5. Tanks (All types) Piping Water Heaters 6. Roof mounted equipment 1.03 SUBMITTALS A. Product Data: For each vibration isolation device. B. Welding certificates QUALITY ASSURANCE A. Welding: Qualify procedures and personnel according to AWS D1.1, "Structural Welding Code--Steel." 1.05 COORDINATION PART 2 A. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items are specified in Division 7 Section "Roof Accessories." PRODUCTS 2.01 MANUFACTURERS A. In other Part 2 articles where subparagraph titles below introduce lists, the following requirements apply for product selection: B. Manufacturers: Subject to compliance with requirements, provide products by the manufacturers specified VIBRATION ISOLATORS A. Available Manufacturers: B. Manufacturers: 1. B-Line Systems, Inc. 2. California Dynamics Corp. 3. Kinetics Noise Control, Inc

16 4. Mason Industries, Inc. 5. Vibration Mountings & Controls/Korfund. C. Elastomeric Isolator Pads: Oil- and water-resistant elastomer or natural rubber, arranged in single or multiple layers, molded with a nonslip pattern and galvanized steel baseplates of sufficient stiffness for uniform loading over pad area, and factory cut to sizes that match requirements of supported equipment. 1. Material: Standard neoprene. 2. Durometer Rating: Number of Layers: 2. D. Restrained Spring Isolators: Freestanding, steel, open-spring isolators with seismic restraint. E. Housing: Steel with resilient vertical-limit stops to prevent spring extension due to wind loads or if weight is removed; factory-drilled baseplate bonded to 1/4-inch- thick, elastomeric isolator pad attached to baseplate underside; and adjustable equipment mounting and leveling bolt that acts as blocking during installation. F. Outside Spring Diameter: Not less than 80 percent of the compressed height of the spring at rated load. G. Minimum Additional Travel: 50 percent of the required deflection at rated load. H. Lateral Stiffness: More than 80 percent of the rated vertical stiffness. I. Overload Capacity: Support 200 percent of rated load, fully compressed, without deformation or failure. J. Housed Spring Mounts: Housed spring isolator with integral seismic snubbers. K. Housing: Ductile-iron or steel housing to provide all-directional seismic restraint. L. Base: Factory drilled for bolting to structure. M. Snubbers: Vertically adjustable to allow a maximum of 1/4-inch travel before contacting a resilient collar MECHANICAL ANCHOR BOLTS A. Mechanical Anchor Bolts: Drilled-in and stud-wedge or female-wedge type in zinc-coated steel for interior applications and stainless steel for exterior applications. Select anchor bolts with strength required for anchor and as tested according to ASTM E FACTORY FINISHES PART 3 A. Manufacturer's standard prime-coat finish ready for field painting. B. Finish: Manufacturer's standard paint applied to factory-assembled and -tested equipment before shipping. C. Powder coating on springs and housings. D. All hardware shall be electrogalvanized. Hot-dip galvanize metal components for exterior use. E. Baked enamel for metal components on isolators for interior use. F. Color-code or otherwise mark vibration isolation and seismic-control devices to indicate capacity range. EXECUTION 3.01 GENERAL A. Drill-in concrete anchors for ceiling and wall installation shall be seismic- rated, drill- in studwedge, and female wedge type for floor mounted equipment. B. Vibration isolation manufacturer shall furnish integral structural steel bases as required. Independent steel rails are not permitted EXAMINATION A. Examine areas and equipment to receive vibration isolation devices for compliance with requirements, installation tolerances, and other conditions affecting performance. MECHANICAL VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT

17 B. Examine roughing-in of reinforcement and cast-in-place anchors to verify actual locations before installation. C. Proceed with installation only after unsatisfactory conditions have been corrected ADJUSTING A. Adjust limit stops on restrained spring isolators to mount equipment at normal operating height. After equipment installation is complete, adjust limit stops so they are out of contact during normal operation. B. Adjust active height of spring isolators CLEANING A. After completing equipment installation, inspect vibration isolation and seismic-control devices. Remove paint splatters and other spots, dirt, and debris MINIMUM EQUIPMENT ISOLATOR SCHEDULE WHERE REQUIRED A. All RTUs END OF SECTION MECHANICAL VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT

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19 PART 1 GENERAL 1.01 RELATED DOCUMENTS SECTION TESTING, ADJUSTING, AND BALANCING A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1. Roof Top Units. 2. Variable Volume Air Terminal units with electric reheat coils. 3. Fan Terminal units with electric reheat coils. 4. Diffusers, registers, and grilles. 5. Exhaust fans. 6. Direct digital controls and sequence of operation DEFINITIONS A. Adjust: To regulate and air patterns at the terminal equipment, such as to reduce fan speed or adjust a damper. B. Balance: To proportion flows within the distribution system, including submains, branches, and terminals, according to indicated quantities. C. Draft: A current of air, when referring to localized effect caused by one or more factors of high air velocity, low ambient temperature, or direction of airflow, whereby more heat is withdrawn from a person s skin than is normally dissipated. D. NC: Noise criteria. E. Procedure: An approach to and execution of a sequence of work operations to yield repeatable results. F. Report Forms: Test data sheets for recording test data in logical order. G. System Effect: A phenomenon that can crate undesired or unpredicted conditions that cause reduced capacities in all or part of a system. H. System Effect Factors: Allowances used to calculate a reduction of the performance ratings of a fan when installed under conditions different from those presented when the fan was performance tested. I. TAB: Testing, adjusting, balancing. J. Terminal: A point where the controlled medium, such as fluid or energy, enters or leaves the distribution system. K. Test: A procedure to determine quantitative performance of systems or equipment. L. Testing, Adjusting, and Balancing (TAB) Firm: The entity responsible for performing and reporting TAB procedures SCOPE OF WORK A. Testing, adjusting and balancing (TAB) of the air systems shall be performed by an impartial technical firm selected and employed by the Contractor. This shall include, but not be limited to, equipment such as roof top units, exhaust fans, and other air moving processes as included in this project. The TAB firm shall not be financially or legally associated with other firms engaged in the work for this project 1. As a part of this Contract, the Contractor shall make any changes in the sheaves, belts and dampers required for correct balance of the air system and include balancing valves, gauge tappings, flow sensors, and thermometer wells for correct balance of the hydronic systems as required by the TAB firm. This shall come at no additional cost to the Owner. 2. The TAB shall coordinate with the contractor and his factory-authorized service representatives for systems and equipment, HVAC control installers, and other mechanics to operate HVAC systems and equipment to support and assist testing, adjusting, and balancing activities. The contractor shall provide and coordinate services of qualified, TESTING, ADJUSTING, AND BALANCING

20 responsible personnel as required to correct, repair, or replace any and all deficient items or conditions found during the testing, adjusting, and balancing period. 3. Notice: The contractor shall provide written notice seven (7) days in advance for each equipment or system requiring testing and balanced by the TAB. Testing, adjusting, and balancing shall only be performed after leakage and pressure tests on air and water distribution systems have been satisfactorily completed. 4. TAB work shall not proceed until all assigned personnel have been approved by A/E via Quality Assurance Submittal. Coordinate each phase of TAB work with overall project schedule. Project contract completion schedules shall provide sufficient time to permit the completion of TAB services and remedial work, if required, prior to Owner occupancy. 5. The Drawings and Specifications have indicated dampers, and miscellaneous adjustment devices for the purpose of adjustment to obtain optimum operating conditions, and it will be the responsibility of the Division 23 Contractor to install these devices in a manner that will leave them accessible and readily adjustable. Should any such device not be readily accessible, the Contractor shall provide access as requested by the TAB firm. Also, any malfunction encountered by TAB personnel and reported to the Contractor or the inspector shall be corrected by the Contractor immediately so that balancing work can proceed REFERENCE STANDARDS A. AABC National Standards for Total System Balance. B. NEBB - National Standards for Total System Balance. C. ADC Test Code for Grilles, Registers, and Diffusers. D. ASHRAE 111 Practices for Measurement, Testing, Adjusting, and Balancing of Building Heating, Ventilation, Air Conditioning, and Refrigeration Systems SUBMITTALS A. Submit under provisions of Division 1 ( Shop Drawings, Product Data, Samples and Colors). Submit minimum of six (6) copies of all submittals unless more directed. (4 for O&M Manuals, 1 for A/E, 1 for Owner). B. Field Reports: Submit under provisions of Division 1 ( Reports). C. Field Reports: Indicate deficiencies in systems that would prevent proper testing, adjusting, and balancing of systems and equipment to achieve specified performance. D. Provide reports in soft cover, letter size, 3-ring binder manuals, with project name and location on cover and side panel. All information sheets shall be 8-1/2 x 11 white bond paper. Use pre-printed forms of AABC or NEBB wherever possible. Include set of reduced drawings with air outlets and equipment identified to correspond with data sheets, and indicating thermostat locations. Assemble the report in the following order: 1. Transmittal letter. 2. Cover sheet with project title, location, submittal date, and name and address of Owner, Contractor, TAB Subcontractor, Architect and Engineer. 3. Index of numbered tabs listing major systems. 4. Equipment data and measurement summary. 5. Branch main measurement data. 6. Terminal device measurement data. 7. Provide numbered tabs for each system PROJECT CONDITIONS A. Owner Occupancy: Owner may occupy the site and building during the TAB period. Cooperate with Owner during TAB operations to minimize conflict with Owner s operations PROJECT RECORD DOCUMENTS A. Submit under provisions of Division 1. TESTING, ADJUSTING, AND BALANCING

21 1.08 QUALITY ASSURANCE SUBMITTAL PART 2 PART 3 A. Initial Test Report: Prior to starting Final Balance Phase, submit Initial Test Report as detailed in Part 3 of this Section to indicate to A/E and Contractor incomplete work or problem areas to be resolved before final balance is completed. B. Final Report: Within 30 days after fieldwork is completed, submit Final Report as detailed in Part 3 of this Section to assure design objectives are met and to assist Owner in future maintenance GENERAL PRODUCTS (NOT USED) EXECUTION A. For spaces that use supply air quantity and exhaust air quantity to maintain pressure relationship in spaces, maximum acceptable supply air offset is 0 to plus 10% of design flow. Associated exhaust air (or return air) quantity shall be balanced to provide indicated differential between supply air and exhaust air (or return air) after supply air system has been balanced BALANCING A. Procedure: Perform all procedures as per Planning Phase narrative. Correct all deficiencies and redo procedures as required before submitting Final Report. B. Final Report: Submit report to A/E and to Contractor indicating all data and measurements as per requirements herein and per Planning Phase narrative. Do not submit partial or incomplete reports. C. Final Report Adjustment: A/E reserves the right to check any measurement made and to reject any portion of work not within installation design tolerance. Contractor shall resubmit all portions of Final Report as directed by A/E EXAMINATION A. Verify that systems are complete and operable before commencing work. Ensure the following conditions: 1. Systems are started and operating in a safe and normal condition. 2. Temperature control systems are installed complete and operable. 3. Proper thermal overload protection is in place for electrical equipment. 4. Final filters are clean and in place. If required, install temporary media in addition to final filters. 5. Duct systems are clean of debris. 6. Air coil fins are cleaned and combed. 7. Access doors are closed and duct end caps are in place. 8. Air outlets are installed and connected. 9. Duct system leakage is minimized. 10. Check all fire and balance damper positions. 11. Place system into normal operation without economizers. 12. Wet cooling coils. 13. Fan wheels, blades, bearings, alignment, starters, vibration isolators, and rotation. 14. Drive belt tension and alignment. 15. Setting of automatic dampers to proper position including shutoff and bypass dampers. B. Examine Contract Documents to become familiar with project requirements and to discover conditions in systems designs that may preclude proper testing, adjusting, and balancing of systems and equipment. 1. Contract Documents are defined in the General and Supplementary Conditions of the Contract. 2. Verify that balancing devices, such as test ports, gauge cocks, thermometer wells, flow-control devices, and manual volume dampers, are required by the Contract TESTING, ADJUSTING, AND BALANCING