Att_12_P8418R0006_Spec_Section_230100_revised_2018-Aug-02.pdf

BEAR VALLEY VISITOR CENTER ASI #1 FINAL SUBMITTAL

HEATING SYSTEM REHABILITATION

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SECTION 23 01 00

MECHANICAL GENERAL REQUIREMENTS

PART 1 – GENERAL

1.1 DESCRIPTION

A. Comply with the requirements of DIVISION 1.

B. The requirements of this SECTION apply to all work of this DIVISION.

C. Provide a complete working installation with all equipment called for in proper operating condition. Documents do not undertake to show or list every item to be provided. When an item not shown or listed is clearly necessary for proper operation of equipment, which is shown or listed, provide an item which will allow the system to function properly at no increase in the Contract Amount.

1.2 QUALITY ASSURANCE

A. Related Work Specified Elsewhere:

1. Refer to DIVISION 26 for all electrical wiring (except that specifically indicated on Control Drawings) for motor starters (except pre-wired packaged systems, in which case they must conform to DIVISION 26).

B. Examination of the Site:

1. Visit the site prior to bidding. Take measurements and such other information as to locations, depths, capacities and sizes of existing piping and ductwork to which connections may be made or which may be abandoned or which require rerouting.

If any of the above requires extra work due to discrepancies or omissions on the drawings, and if such omissions or discrepancies have been revealed by examination before bidding, the Contractor should report the discrepancy to the Contracting Officer a minimum of three days prior to receipt of bids. If additional work is required due to omissions and discrepancies after the contract for the work is signed and if such omissions or discrepancies would have been revealed by a visit to the site before receipt of bids, then the corrective additional work shall be performed at no additional cost to the Owner.

C. Requirements of Regulatory Agencies:

Standards Compliance: When materials or equipment must conform to the standards of organizations such as the American National Standards Institute (ANSI), American Society for Testing and Materials (ASTM), National Electrical Manufacturers Association (NEMA), American Society of Mechanical Engineers (ASME), American Gas Association (AGA), American Refrigeration Institute (ARI), and Underwriters' Laboratories (UL), proof of such conformance shall be submitted to the Contracting Officer for approval.

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If an organization uses a label or listing to indicate compliance with a particular standard, the label or listing will be acceptable evidence, unless otherwise specified in the individual sections. In lieu of the label or listing, the Contractor shall submit a certificate from an independent testing organization, which is competent to perform acceptable testing and is approved by the Contracting Officer. The certificate shall state that the item has been tested in accordance with the specified organization's test methods and that the item conforms to the specified organization's standard.

1. Any specific reference in these Specifications to codes, rules, regulations, standards, manufacturer's instructions or requirements of regulatory agencies shall mean the latest printed edition of each in effect at date of submission of Bid, unless the Document is shown dated.

2. Perform the work in conformance with the applicable requirements of all regulatory agencies, including, but not limited to the following:

a. National Electrical Code.

b. Uniform Plumbing Code.

c. International Building Code

d. California Code of Regulations (CCR).

(1) Title 8, Division 1, Chapter 3.2 - California Occupational Safety and Health Regulations (CAL/OSHA).

(2) Title 8, Division 1, Chapter 4 - Safety Orders.

(3) Title 24, Building Standards.

(a) Part 2 - California Building Code

(b) Part 3 - California Electrical Code

(c) Part 4 - California Mechanical Code

(d) Part 5 - California Plumbing Code

(e) Part 6 - California Energy Code

(f) Part 9 - California Fire Code

(4) Acceptance Requirements of California Energy Code: Perform work necessary to complete the Acceptance Requirements of the California Energy Code, including but not limited to:

(a) Testing of minimum ventilation controls, zone temperature and scheduling controls, duct leakage, Air-side economizer controls, demand control ventilation systems, fan volume controls and variable frequency

PORE #208882 230100 – Page 3 of 17 drive fan systems.

(b) Reviewing plans and specifications to ensure conform to the Acceptance Requirements

(c) Perform construction inspection prior to testing to ensure that the equipment installed is capable of complying with the requirements of the Standards, the equipment is installed correctly and calibrated.

(d) Undertake all required Acceptance Requirement procedures and identify all performance deficiencies, ensuring that they are corrected. Document the results of the Acceptance Requirement procedures on the Acceptance Test forms and indicate satisfactory completion by signing the Certificate of Acceptance.

3. Nothing in the Drawings or Specifications shall be construed to permit Work not conforming to applicable laws, ordinances, rules, regulations.

4. When Drawings or Specifications exceed requirements of applicable laws, ordinances, rules, regulations, Drawings and Specifications take precedence.

5. It is not the intent of Drawings or Specifications to repeat requirements of codes except where necessary for completeness or clarity.

6. Work herein shall comply with all applicable requirements of CCR Title 8, Division 1, as they apply to this project, both in reference to Contractor's operations in performing his work and also in construction result to be accomplished. Where an omission or a conflict appears between OSHA requirements and the Drawings and Specifications, OSHA requirements shall take precedence.

D. When there is an ambiguity or discrepancy between Drawings and Specifications the more stringent requirement of the two shall be provided.

E. Licenses, Permits and Fees

1. Provide, procure and pay for all permits, licenses, fees, etc., required to carry on and complete the Mechanical Work. Contact all applicable utility authorities and include in bid all fees, charged by any such authorities.

F. Operating and Maintenance Instruction:

1. Furnish the services of competent instructors who will give full instruction to the designated personnel in the adjustment, operation, and maintenance, including pertinent safety requirements, of the equipment or system specified. Each instructor shall be thoroughly familiar with all parts of the installation and shall be trained in operating theory as well as practical operation and maintenance work.

Instruction shall be given during the first regular work week after the equipment or system has been accepted and turned over to the Owner for regular operation.

The number of man days (8 hours) of instruction furnished shall be 1 (one).

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1.3 SUBMITTALS

A. General

1. Submit shop drawings, catalog data, supplemental data, for all materials, equipment in all Sections of this DIVISION in accordance with the requirements of SECTION 013323, "SUBMITTAL PROCEDURES," and as specified hereinafter.

2. Four weeks after award of the Contract, or earlier, if deemed appropriate by the Contracting Officer, submit a schedule of all submittals with the date of each equipment submittal or shop drawing submittal clearly indicated.

3. Forward all submittals to Contracting Officer, together, at one time. Individual or incomplete submittals are not acceptable. Six (6) copies are required.

4. Submittals shall have been reviewed and stamped by the General Contractor in accordance with the requirements of the GENERAL CONDITIONS OF THE CONTRACT FOR CONSTRUCTION. Submittals not so stamped will be returned without review.

5. The contractor shall allow for adequate time for submittal review by the Contracting Officer. In general, the contractor shall allow for a minimum of 15 working days from the day the general contractor sends the submittal to the Contracting Officer to the day the Contracting Officer returns the submittal to the general contractor. Additional time shall be allowed for large or complex submittals.

6. Identify each item by manufacturer, brand, trade name, number, size, rating, or whatever other data is necessary to properly identify and check materials and equipment. Words "as specified" are not sufficient identification.

7. Identify each submittal item by reference to Specification SECTION Paragraph in which item is specified or drawing and detail number.

8. Organize submittals in same sequence as they appear in specification sections, articles, or paragraphs.

9. Submit signed Acceptance Test forms indicating completion of California Energy Code Acceptance Test requirements.

B. Electronic Submittals: Electronic submittals is the preferred method of review. Follow these procedures:

1. Provide one pdf file for each submittal. PDF file must be unlocked, editable and printable to accommodate electronic mark-ups or printing a hard copy from markup.

2. Electronic submittals are to be complete and self-contained with each item requiring Contracting Officer’s action highlighted.

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3. Web links or other electronic submittals requiring the Contracting Officer to surf websites or navigate to find documents on websites or posting services are not acceptable.

4. The use of construction phase file hosting services or programs such as BIM 360 or Prolog or Primavera may not be used before prior approval from the Contracting Officer.

5. Any electronic submittal procedures should not require the Contracting Officer to search for submittals but should follow procedures that are the electronic equivalent of hard copy submittals sent by Contractor to the Contracting Officer in a manner acceptable to the Contracting Officer including indexing requirements mentioned below.

6. No electronic submittals for samples (if needed) will be permitted.

7. Contracting Officer will return one marked up electronic submittal for Contractor to process and distribute to subcontractors and for Owner according to agreed procedure.

8. On each electronic submittal, provide Contractor review and approval stamp.

C. Indexing:

1. Submittals shall be indexed according to specification DIVISION and SECTION number and paragraph to identify each item. Sporadic submittals, incomplete data, or unidentified data, or data not showing features to coordinate item with other work will not be accepted.

D. Submittal literature, Drawings and wiring diagrams shall be specifically applicable to this project and shall not contain extraneous material. The literature shall be clearly marked to indicate the proposed item and any accessories or options to be furnished. Submittals shall include, but not be limited to the following:

a. Motors * Drives and Guards

b. Hangers and Seismic Bracing, Insulation, Vibration Isolators

c. Duct Trim, Filters, Sound Attenuators,

d. Temperature Controls, Air Handling Equipment, Air Inlets and Outlets +

Notes:

* Include a family of rating curves. See applicable specification section.

+ With a detailed list including Room Nos., neck sizes, throws and NC levels.

E. Resubmittals shall respond to comments made on the original submittal and shall be marked with a resubmittal number and dated. Resubmittals not in conformance with these requirements will be returned without review.

F. Shop Drawings:

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1. Submit shop drawings for ductwork and equipment. Do not begin fabrication until shop drawings have been coordinated with all trades and have been reviewed and accepted by the Contracting Officer.

2. Contractor shall prepare and submit coordinated shop drawings for Contracting Officer’s review prior to installation of work. Shop drawings shall show mechanical (including plumbing), electrical, lighting, low-voltage, and fire protection systems including piping, ducting, equipment, devices, fixtures, supports, drains, panels, connections, etc. to show that all equipment/systems can be constructed without interference between components. Equipment access as required by code or as recommended by the manufacturer shall be accounted for and shown.

3. Drawings shall be a minimum of 8-1/2 inches by 14 inches in size, with a minimum scale of 1/8 inch per foot, except as specified otherwise. Drawings shall include floor plans, sectional views, wiring diagrams, and installation details of equipment; and equipment spaces identifying and indicating proposed location, layout and arrangement of items of equipment, control panels, accessories, ductwork, and other items that must be shown to assure a coordinated installation.

Ductwork layouts and Mechanical Room layouts shall be drawn at a minimum scale of 1/4 inch per foot. Drawings shall indicate adequate clearance for operation, maintenance, and replacement of operating equipment and devices.

4. Submit wiring diagrams for packaged equipment and controls. Wiring diagrams shall identify circuit terminals, and indicate the internal wiring for each item of equipment and the interconnection between each item of equipment.

5. The Contracting Officer's review of Shop Drawings is not intended to verify dimensions or quantities, nor to coordinate items shown on these Drawings. He will review them for general conformance with design concept of the project and general compliance with the information given in the contract requirements of the plans and Specifications. Contractor is responsible for dimensions, which shall be confirmed and correlated at the job site, for fabrication processes and techniques of construction, for coordination of his work with that of all other trades and the satisfactory performance of his work.

G. Record Drawings

1. Installation drawings shall be drawn at the site by the Contractor on reproducible paper and shall be fully coordinated for interferences by all trades. The Contractor shall maintain at the jobsite a complete set of prints of the installation drawings for all mechanical work. These prints shall be kept up to date by recording all changes daily. The progress of the work shall be clearly, neatly and accurately designated, coloring in the various pipes, ducts and equipments as they are erected. This process shall incorporate all changes to the original drawings including formal change orders or other instructions issued by the Contracting Officer. Principal dimensions of all concealed work shall be recorded including inverts of buried piping and height to underside of ducts.

2. These marked up prints will be used as a guide for determining the progress of the work installed. They will be inspected monthly by the Contracting Officer and

PORE #208882 230100 – Page 7 of 17 shall be corrected immediately if found either inaccurate or incomplete.

3. Prior to final acceptance of the Work of this Division, submit properly certified Record Drawings to the Contracting Officer for review and make changes, corrections, or additions as the Contracting Officer may require. After the Contracting Officer's review and any required Contractor revisions, deliver the Record Drawings to the Owner on electronic media in AutoCAD .DWG format.

The Architect and Engineer do not assume any responsibility for the accuracy or completeness of the Record Drawings.

H. Operating & Maintenance Manuals:

1. Manuals shall conform to SECTION 017700, “CLOSEOUT PROCEDURES”.

2. Furnish an operation and maintenance manual for each item of equipment.

Furnish three (3) copies of the manual bound in hardback binders or an approved equivalent. Furnish one complete manual prior to the time that equipment tests are performed, and furnish the remaining manuals before the contract is completed. Inscribe the following identification on the cover: the words OPERATION AND MAINTENANCE MANUAL, the name and location of the equipment or the building, the name of the Contractor, and the contract number. The manual shall include the names, addresses, and telephone numbers of each subcontractor installing equipment, and of the local representatives for each item of equipment.

The manual shall have a table of contents and be assembled to conform to the table of contents with the tab sheets placed before instructions covering the subject. The instructions shall be legible and easily read, with large sheets of drawings folded in. The manual shall include: wiring and control diagrams with data to explain detailed operation and control of each item of equipment; a control sequence describing start-up, operation and shutdown; description of the function of each principal item of equipment; the procedure for starting; the procedure for operating; shutdown instructions; installation instructions; maintenance instructions; lubrication schedule including type, grade, temperature range, and frequency;

safety precautions, diagrams, and illustrations; test procedures; performance data;

and parts list. The parts lists for equipment shall indicate the sources of supply, recommended spare parts, and the service organization which is reasonably convenient to the project site. The manual shall be complete in all respects for equipment, controls, accessories, and associated appurtenances provided.

3. Submit three (3) copies of the DVD disk containing all Operations and Maintenance data in Adobe “pdf” format. Also include an index of Internet web site addresses Section No. and title, equipment name, Web site address for the O&M manual of the equipment, and the O&M Manual filename.

I. Letters from manufacturers certifying their supervision of equipment installation and start-up procedures.

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J. Three (3) copies of certification signed by Owner's representative, attesting to their receipt of instructions required by paragraph “Operation and Maintenance Instruction” of this Section.

1.4 PRODUCT DELIVERY AND STORAGE

A. Identify materials and equipment delivered to site to permit check against approved materials list, reviewed shop Drawings.

B. Protect from loss or damage. Replace lost or damaged material and equipment with new at no increase in the Contract Amount.

1. Store material in clean, dry locations. Store material off of floor, and wrap material or otherwise protect from contamination by construction debris, dust, etc.

Follow manufacturer’s recommendation for storing the material at all times.

1.5 DRAWINGS AND COORDINATION WITH OTHER WORK

A. Contract Drawings:

1. For purposes of clarity, legibility, the Contract Drawings are essentially diagrammatic to extent that many offsets, bends, unions, special fittings are not shown. Exact locations of items are not indicated, unless specifically dimensioned.

2. Exact routing of ductwork, etc., shall be governed by structural conditions, obstructions. Contractor shall make use of data in Contract Documents.

Contracting Officer reserves right, at no increase in price, to make any reasonable change in location of mechanical items, exposed at ceiling and/or on walls, to group them into orderly relationships and/or increase their utility. Verify Contracting Officer's requirements in this regard prior to roughing-in.

3. In addition to the Shop Drawings called for under SUBMITTALS the Contractor shall prepare large scale layout drawings showing location of equipment and duct runs, and all other elements of mechanical systems provided under this DIVISION. Include sections of congested areas to show relative position and spacing of affected elements.

4. Refer to the electrical "E" series drawings and specifications, Division 26 for the service voltage, power feed, control and interlock wiring for equipment specified under this section. Review the electrical "E" series drawings and Division 26 documents to verify that the electrical services (power, control, interlock, etc.)

provided are adequate and compatible with the equipment requirements. Include the cost to furnish and install the additional electrical services, if it is required over and above what is indicated on the electrical "E" series drawings and in Division 26, such as additional control interlock conductors, larger feeder, or separate 120V control power source.

a. Prior to proceeding with the installation of any additional electrical work, submit detailed drawings indicating the exact scope of additional electrical work to the Contracting Officer for review and approval.

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5. Provide templates, information, and instructions to other DIVISIONS to properly locate holes and openings to be cut or provided for electrical Work.

6. Not all offsets in ductwork are shown. Decide which item to offset or relocate.

B. Coordination:

1. Work out all "tight" conditions involving Work under this DIVISION and Work in other DIVISIONS in advance of installation.

2. Maintain minimum 1 inch clearance from adjacent work, ductwork, insulation, etc. except as noted or approved.

PART 2 – PRODUCTS

2.1 MATERIALS

A. Materials and equipment shall be standard products of a manufacturer regularly engaged in the manufacture of such products, which are of a similar material, design and workmanship. The standard products shall have been in satisfactory commercial or industrial use for two years prior to bid opening. The two year use shall include applications of equipment and materials under similar circumstances and of similar size.

B. Alternative Service Record: Products having less than a two-year field service record may be acceptable on approval of the Contracting Officer if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturer's factory or laboratory tests, can be shown.

C. Service Support: Major equipment items shall be supported by service organizations. The Contractor shall submit a certified list of qualified permanent service organizations for support of the equipment, which includes their addresses and qualifications. These service organizations shall be reasonably convenient to the equipment installation and able to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

D. Identify materials, equipment by manufacturer's name, nameplate data. Remove unidentified materials, equipment from site.

E. Equipment specified by manufacturer's number shall include all accessories, controls, etc., listed in catalog as standard with equipment. Furnish optional or additional accessories as specified.

F. Where no specific make of material or equipment is mentioned, any first class product of reputable manufacturer may be used, provided it conforms to requirements of system and meets acceptance.

G. Equipment Guarding

1. Rotating Equipment Safety:

a. Couplings, Motor Shafts, Gears and other exposed rotating or rapidly moving parts shall be fully guarded in accordance with OSHA

PORE #208882 230100 – Page 10 of 17 requirements. The guards shall be cast iron or expanded metal. Guard parts shall be rigid and suitably secured and shall be readily removable without disassembling the guarded unit.

b. Belts, pulleys, chains, gears, couplings, projecting setscrews, keys, and other rotating parts located so that any person can come in close proximity thereto shall be fully enclosed or properly guarded in accordance with Title 8, Division 1, Chapter 4, Sub-chapter 7, Group 6. High temperature equipment so located as to endanger personnel or create a fire hazard shall be properly guarded or covered with insulation of a type as specified herein. Items such as catwalks, ladders, and guardrails shall be provided where required for safe operation and maintenance of equipment.

H. Equipment or material damaged during transportation, installation or operation is considered as totally damaged. Replace with new. Variance with this permitted only with written acceptance.

I. Provide an authorized representative to constantly supervise work of this DIVISION, check all materials prior to installation for conformance with Drawings and Specifications.

J. Equipment shall be as described in the respective SECTIONS of THIS DIVISION and as shown.

2.2 SUBSTITUTIONS

A. See SECTION 014000, “QUALITY REQUIREMENTS" and the following.

B. Where more than one specific name is used, it is to be understood that the name mentioned first represents the manufacturer whose equipment has been used as the basis of design. All other names mentioned are to be considered substitutions within the meaning of this paragraph, and no additional cost to the Owner shall accrue due to any revisions, additions or deletions required to make substituted equipment perform in accordance with the plans and specifications.

C. Any redesign necessitated by substitutions shall be provided by the Contractor and shall be subject to review and approval by the Contracting Officer.

D. Substitutions will not be considered if they are indicated or implied on Shop Drawings or Project Data Submittal without the formal request required by Division 1.

PART 3 – EXECUTION

3.1 DEMOLITION

A. Remove all ducts, fixtures, equipment, etc., where shown or otherwise indicated to be removed.

3.2 INSTALLATION

A. Manufacturer's Recommendations

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1. Where installation procedures or any part thereof are required to be in accordance with the recommendations of the manufacturer of the material or equipment being installed, printed copies of these recommendations shall be furnished prior to installation.

Installation of the item will not be allowed to proceed until the recommendations are received. Failure to furnish these recommendations can be cause for rejection of the material.

2. Provide complete systems in accordance with manufacturers’ requirements.

3. Where dimensions or specific installation and operating instructions of equipment are not provided in the Drawings or Specifications, perform the Work according to approved manufacturer's specifications and recommendations. Any material and work required under this heading shall be supplied at no additional cost to the Owner.

4. Assemble equipment which is required to be field assembled, under the direct supervision of the manufacturer's agent. Prior to the final acceptance submit letters from the manufacturers that this has been done.

B. Equipment: Accurately set and level with supports neatly placed and properly fastened.

Properly fasten equipment in place with bolts to prevent movement in earthquake. No allowance of any kind will be made for failure on part of Contractor to foresee means of bringing in or installing equipment into position inside building.

C. Ductwork Systems:

1. Worked into complete, integrated arrangement with like elements to make work neat appearing, finished.

2. Run concealed, except as shown or noted otherwise; where exposed, run parallel with walls or structural elements; vertical runs plumb; horizontal runs parallel with structure and level or uniformly pitched as appropriate.

3. Install with adequate passageways free from obstructions, as high as practicable to maintain adequate head room, as shown or as required. Notify Contracting Officer before installation whenever head room of less than 7-feet 6-inches will result. Coordinate with work of other DIVISIONS to achieve proper head room as specified in this DIVISION.

4. Provide bases, piers, metal frames and backings, hangers and supports for the fixtures and systems furnished under this DIVISION.

5. Expansion and Contraction: Make adequate provisions, whether those provisions are shown on Drawings or not.

6. Cleaning and Closing: Inspect all ductwork, and equipment before placing; clean interior before closing. Close all ductwork at end of each day's work.

D. Sleeves, Chases, and Concrete Inserts:

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1. Cutting and Patching: In accordance with SECTION 017340, "EXECUTION".

2. Provide, to cause no delay, all required sleeves, chases, inserts, anchor bolts, etc., and be responsible for correct location, installation of same.

3. Locating and sizing of openings for ductwork through walls, etc., under this DIVISION. Framing of openings provided by respective DIVISIONS in whose work opening is made.

4. Penetrations of fire or smoke rated walls, partitions, and floors:

a. Pack space between duct and sleeve or opening with materials approved by Underwriters Laboratories for use in through-penetration fire stop systems. Materials, methods, and installation shall be in accordance with UL approved listings and shall be designed to act as a firestop as well as a cold smoke, noxious gas, and water sealant. Submit UL listings for all such systems to be used.

b. Through-penetrations of fire rated walls shall be protected by an approved through-penetration firestop system installed as tested in accordance with ASTM E814 or UL1479, and shall have an F rating of not less than the required fire-resistance rating of the wall penetrated.

c. Through penetrations of horizontal assemblies that are not contained inside fire-rated shafts shall be protected by an approved through-penetration firestop system installed as tested in accordance with ASTM E814 or UL1479, and shall have an F and T rating of not less than 1 hour and not less than the required fire-resistance rating of the floor penetrated.

(1) Floor penetrations contained and located within the cavity of a wall above or below the floor do not require a through-penetration firestop system with a T rating.

5. Pipe Sleeves: Where not otherwise indicated or specified, sleeves through outside walls, floors or roof slabs shall be zinc coated steel pipe conforming to ASTM A53. Sleeves through inside partitions shall be zinc coated sheet steel not less than 0.0217-inches thick conforming to ASTM A653.

6. Provide steel wool fill in all sleeve annular spaces and chases for rodent-proofing.

E. Cutting and Repairing:

1. Do all cutting, repairing, including structural reinforcing, necessary for Work under this DIVISION.

2. Do no cutting or patching without Contracting Officer's review. Repair damage done by this cutting equal to original condition in Contracting Officer's opinion.

3. Assume responsibility for all damage to any part of premises or Work of other DIVISIONS, caused by leaks or breaks in piping or equipment furnished and/or installed under this DIVISION during construction and guarantee period.

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F. Temporary Ventilation:

1. The permanent HVAC system shall only be used during construction if necessary to condition the building or areas of addition or alteration within the required temperature range for material and equipment installation. If the HVAC system is used during construction, use return air filters with a Minimum Efficiency Reporting Value (MERV) of 8, based on ASHRAE 52.2-2007, or an average efficiency of 30 percent based on ASHRAE 52.1-1992. Replace all filters immediately prior to occupancy (see additional requirements in Specification Section 234000), or, if the building is occupied during alteration, at the conclusion of construction.

3.3 TESTING AND ADJUSTING

A. Do not start or operate any equipment until the unit as well as all services connected thereto have been supported and seismically braced. Services connected to equipment includes ductwork and its in-line components, wiring, or other in-line components.

B. Furnish all labor and test equipment required under this DIVISION and in accordance with SECTION 230593 and as follows.

C. Clean and purge equipment before each test.

D. Test various Mechanical systems in portions as work progresses. Any system or portion previously tested shall become part of any repeated test when it becomes part of distribution or collection system.

E. Repair leaks by remaking with new material. Makeshift leak stopping methods are not acceptable.

F. Should any piece of equipment or material fail in any of the tests, immediately remove, replace with new; retest system.

G. Maintain test pressures for periods stated, or as directed without loss in pressure, except that due to change in temperature or atmospheric pressure during test.

H. Perform all tests in accordance with the requirements and under supervision of authorities having jurisdiction.

I. Field Dynamic Balancing:

1. All fans, blowers and exhausters greater than one (1) horsepower shall be dynamically balanced in the field by a company specializing in machine balancing. Provide a written report on completion of balancing indicating final condition of each piece of equipment.

J. Air Prebalancing Requirements:

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1. Complete and test all systems early enough to enable completion of air balancing prior to Owner move in.

2. Prior to any demolition or other work performed on the existing supply and return/exhaust air distribution systems, perform the following work on the existing fan systems:

a. Measure and record the following parameters for the system fan:

1) RPM

2) Fan Motor Amperage

3) Static pressure upstream and downstream of the fan

4) CFM, by taking a traverse at a convenient location or locations, or other suitable means of measurement.

b. Measure and record the air quantities to all areas and/or duct branches outside the work area that are served by fan systems which also serve the work area. This information must be complete enough to achieve the air balance as required by article 3.03 of Section 230593.

c. Submit all quantities measured above to the Contracting Officer. Do not proceed with demolition or construction until Contracting Officer has approved this submittal.

3. If the measured quantities differ from the amount shown by more than plus or minus 10-percent, report the discrepancy to the Contracting Officer. The Contracting Officer will then issue the necessary instructions how to proceed.

4. Complete or perform the following Work prior to commencement of the balancing procedure:

a. Testing of all systems.

b. Prior to the start of balancing, complete all punch list items that will affect balancing of the system.

c. Install all dampers and other balancing devices shown and specified and check to be sure they are properly installed, indexed, and in good working order.

d. Schedule the Work of all other trades to eliminate system shutdown for any reason once balancing is started.

e. Schedule the Work of other trades to assure uninterrupted access to mechanical equipment rooms as well as conditioned spaces.

f. Provide labor and material necessary to perform any system revisions

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g. Align all drives.

h. Set sheaves to provide indicated capacities at specified static pressures.

i. Set all manual dampers to 100-percent open position.

j. Remove all adjustable pitch pulleys from the motor shaft; the shaft and pulley threads shall be cleaned, lightly oiled; and the pulley remounted, aligned, and properly adjusted.

k. Drill 3/8-inch diameter holes in low velocity ductwork with burrs removed, for temperature, pressure, and velocity readings; and provide holes in drive guards that will permit tachometer readings without removing guards. Locate as specified hereinafter and as directed. Install a replaceable rubber plug in each hole.

l. Clean interior of all plenums, casings, and ducts; and install temporary and final filters before starting any systems.

m. Place all systems in automatic operation.

n. Notify the Contracting Officer prior to start of tests to enable balancing to be scheduled.

5. Drill test holes in the following locations:

a. Each side of each filter, fan, and multi-blade damper; 12-inches O.C. for traverse readings in all main ducts and as directed in the field. Provide at least ten (10) extra plugs to the Owner.

6. When all the above testing and adjusting Work has been completed, submit a written statement to the Contracting Officer, stating that all the testing and prebalancing requirements have been met. Final Balancing shall not begin until the certificate has been approved by the Contracting Officer.

K. At completion of Work, provide written certification that all systems are functioning properly without defects.

3.4 CLEANING AND PAINTING

A. Refinish Work supplied with final finish under this DIVISION if damaged to satisfaction of Contracting Officer.

B. Matte black paint finish ducts behind grilles and diffusers where duct is visible.

C. Thoroughly clean all equipment, piping and all other materials under this DIVISION free from all rust, scale, and all other dirt before covering or painting is done, or the systems put in operation. Leave in condition satisfactory to the Contracting Officer.

D. Protect all finished surfaces of fixtures with heavy paper pasted thereon, or by other

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E. Cleaning Ductwork:

1. Clean ductwork inside and out before grilles are installed and before fans are operated. The Contractor shall meet the performance requirements and utilize the evaluation criteria of NADCA Standard ACR 2006, Assessment, Cleaning and Restoration of HVAC Systems.

2. All existing ductwork within the construction area, which is indicated on the drawings to be integrated with new ductwork shall be cleaned as follows. A firm specializing in such work shall be employed.

a. Clean all supply and exhaust ducts, duct turns, and other components.

b. Clean, paint and lubricate all dampers and linkages.

c. Install temporary filter material over every supply diffuser and/or duct opening to catch any dirt or debris during the entire cleaning operation.

d. Any damaged sheet metal, which needs repair upon inspection by the Contractor, shall be reported to the Contracting Officer.

e. Provide duct access panels wherever required.

f. All air ducts shall be crawled where possible and shall be vacuumed and wiped clean. A crawl board shall be used wherever possible.

g. All surfaces requiring repainting shall have any rusted areas cleaned to bare metal by wire brushing and scraping and the surfaces thoroughly coated with a metal primer and one finish coat of aluminum. All surfaces shall be brushed. No spraying will be allowed.

h. Access panels shall be galvanized and of a gauge equal or heavier than the air ducts, complete with gaskets and screws on 2" centers.

i. Filter material for bagging diffusers shall be cotton batting filter material.

j. Any ceiling tile damaged during this Work shall be replaced to match existing.

k. Any insulation damaged shall be repaired.

F. At all times keep the premises free from accumulation of waste material and debris caused by his employees. At the completion of the project, remove refuse from within and around the building. All tools, scaffolding and surplus materials shall also be removed, leaving the site of his Work broom clean.

G. Completely cover all motors and other moving machinery to keep free of dirt during construction. Using Visqueen EcoMembrane or other 100% post-use low density polyethylene sheet membrane material, effectively cap all openings into ducts and pipes to keep foreign matter out during construction.

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H. Lubricate all equipment at completion of Work. Furnish Owner with a written lubrication schedule for all equipment.

I. Painting:

1. All exposed work which in general includes ductwork, insulation, metal items, equipment and supports shall be painted except that polished aluminum, stainless steel, chrome plate and other finely finished materials shall not be painted unless otherwise noted.

2. Unless otherwise noted all finish colors shall be selected by the Contracting Officer.

3. Materials previously shop prime coated by the manufacturer and which have been scuffed or otherwise damaged shall be touched up with the same materials used for priming. Prime coats shall be of a lighter tint than final coats.

3.5 SIGNS, LABELS AND IDENTIFICATION FOR PIPING, VALVES AND EQUIPMENT

A. Signs and Labels:

1. Fasten a red-headed tack to each T-bar suspended ceiling pushout tile at any equipment, component or control devices, requiring maintenance or access.

2. Post a printed sign at each automatically started equipment stating, "WARNING

THIS MACHINE IS AUTOMATICALLY CONTROLLED AND MAY START

AT ANY TIME".

3.6 EQUIPMENT IDENTIFICATION

A. Properly identify each piece of equipment and its controls using engraved laminated plastic descriptive nameplates, attached to equipment and controls using round head brass machine screws, pop rivets or contact cement. Cardholders in any form not acceptable.

END OF SECTION