Div 23.pdf

OFFUTT AIR FORCE BASE

23 00 00-1 (Repair AHU 1096C E-Wing, B500)

(082069) 2009 by FEI

SECTION 23 00 00

MECHANICAL GENERAL PROVISIONS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of Contract, including General and Supplementary Conditions, apply to this Section.

1.2 WORK INCLUDED

A. This section applies to all mechanical work.

B. The general provisions of the Contract, including General and Supplementary Conditions and General

Requirements apply to all mechanical work.

C. Each specification section within their respective Division shall be coordinated with all other sections in that division for related work.

D. The project documents contemplate the complete installation of the systems described herein, or shown on the drawings, so that at the conclusion of the construction, the systems will be turned over to the Owner complete and ready for safe, efficient operation.

E. The Contractor shall be obliged to furnish and install all such items normally included on systems of this type, which while not mentioned directly herein are obviously essential to the installation and operation of the systems, and which are normally furnished on installations of this type.

1.3 COORDINATION OF WORK

A. General: The Contractor shall recognize that the Contract Documents are diagrammatic in showing certain physical relationships that must be established within the mechanical and electrical work, and in its interface with other work including utilities and that such establishment is the exclusive responsibility of the Contractor. This Contractor shall be responsible for work fitting in place without conflict with other trades, where proper planning could avoid interference. This Contractor shall examine the locations and verify all measurements, distances, elevations and existing conditions before starting work. Because the drawings are diagrammatic and on a small scale, all rises, drops, offsets, etc., have not been shown. The Contractor shall agree to provide and install the necessary piping, fittings, valves, ducts, duct fittings and offsets, and other specialties to suit such conditions without additional cost to the Owner. Mechanical drawings shall not be used for general construction dimensions or for type of material used for general construction. For exact building layout, dimensions and building materials used, Contractor shall refer to Architectural Drawings.

1.4 QUALITY ASSURANCE

A. Contractor shall comply with all State, and local codes and ordinances.

B. Contractor shall make application for, obtain and pay for all required permits and certificates of inspection of the work.

C. All equipment, materials, and installation procedures shall comply with standards listed within each specification.

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D. Verify final locations for rough-ins with field measurements and with the requirements of the actual equipment to be connected.

E. Install equipment and materials to provide required access for servicing and maintenance.

1.5 SUBMITTALS

A. Maintenance and Operation Manuals:

1. Prepare and submit three (3) copies of maintenance and operation instructions for all mechanical equipment furnished. Organize maintenance and operating manual information into suitable sets of manageable size, and bind into individual binders properly identified and indexed (thumb-tabbed). Include emergency instructions, spare parts listing, copies of warranties, wiring diagrams, recommended "turn-around" cycles, inspection procedures, shop drawings, product data, signed letters of certification of inspection and similar application information. Bind each manual of each set in a heavy-duty 2-inch, 3-ring vinyl-covered binder, and include pocket folders for folded sheet information. Mark identification on both front and spine of each binder.

B. Record Drawings:

1. Provide one (1) set of mechanical drawings marked-up with actual installation locations. Give special attention to the complete and accurate recording of underground conduit, piping and ductwork, other concealed and non-accessible work, branching arrangement and valve location for piping systems, locations of dampers and coils in duct systems, locations of control system sensors and other control devices, and work of change orders where not shown accurately by Contract Documents.

C. Contract Document Discrepancies:

1. If Contract Document requirements appear to make it impossible to produce first class work, or should discrepancies appear among Contract Documents, request interpretation before proceeding with work. If Contractor fails to make such request, no excuse will thereafter be entertained for failure to carry out work in satisfactory manner. Should conflict occur in or between drawings and specifications, Contractor is deemed to have estimated on more expensive way of doing work unless he shall have asked for and obtained written decision before submission of proposal as to method or materials required.

D. The Contractor shall be responsible for and bear any expense of alterations to the building or its appurtenances resulting from the substitution of equipment to that specified in the Contract

Documents.

E. Review of shop drawings does not release the Contractor from further satisfactory operating responsibilities. Material and equipment shall still be required to meet the requirements of the

Construction Documents and shall be approved for final acceptance when construction is completed and all units and systems have been operated, tested, adjusted and balanced to the satisfaction of the

Architect/Engineer. Should proposed approved alternate equipment involve rearrangement of designed equipment, a complete layout of the area involved shall be submitted by the Contractor, and shall be approved in writing before installation of any such items of equipment. Any additional expense involved shall be a Contractor-borne expense.

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1.6 FEES, PERMITS, LICENSES, UTILITY CONNECTION CHARGES, AND UTILITY COST

A. The Contractor shall obtain and pay for all fees, permits, licenses, utility connection charges (water, sanitary sewer, storm sewer and gas) and utility cost for services to the building required. Capital facilities utility service charges are to be paid directly by Owner, not part of the Construction Contract.

B. The Contractor shall maintain all necessary signal lights and guards against danger and use all proper means for the safety of the public.

C. The Contractor shall pay for opening and repairing all pavement cuts.

D. The Contractor shall furnish to the Architect/Engineer copies of all fees, permits and licenses required for all mechanical work herein specified before any mechanical work is started.

1.7 ELECTRICAL COORDINATION

A. General: Mechanical Contractor shall coordinate with Electrical Contractor for proper electrical power characteristics to all mechanical equipment which require electrical power connection. Unless specifically shown otherwise Electrical Contractor shall provide all power connections required to provide power to the equipment and Mechanical Contractor shall provide all equipment and electrical wiring required for all start-stop control and safety interlock functions required for all equipment.

B. Types of work, normally recognized as electrical but provided as mechanical, specified or partially specified in this section, include but are not necessarily limited to the following:

1. Motors for mechanical equipment.

2. Starters for motors of mechanical equipment, but only where specifically indicated to be furnished integrally with equipment and for all 2-speed motors. All 2-speed starters to be provided with time delay between high and low speed.

3. Wiring from motors to disconnect switches or junction boxes for motors of mechanical equipment, but only where specifically indicated to be furnished integrally with equipment.

4. Furnish and install all electrical control circuit conduits and wiring and control devices required to perform the equipment control functions, including float control switches, flow control switches, and similar mechanical/electrical devices provided for mechanical systems.

C. Mechanical/Electrical Coordination Schedule: See schedule on drawings for further

Mechanical/Electrical coordination requirements.

1.8 ELECTRIC MOTORS

A. Basic Motor Requirements

1. Basic requirements apply to mechanical equipment motors, unless otherwise indicated.

2. Motors 1 HP and Larger: Polyphase.

3. Motors smaller than 1 HP: Single-phase.

4. Frequency Rating: 60 Hz.

5. Voltage Rating: Determined by voltage of circuit to which motor is connected.

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6. Service Factor: According to NEMA MG 1, unless otherwise indicated.

7. Capacity and Torque Characteristics: Rated for continuous duty and sufficient to start, accelerate, and operate connected loads at designated speeds, in indicated environment, with indicated operating sequence, and without exceeding nameplate ratings or considering service factor.

8. Enclosure: Open dripproof, unless otherwise indicated.

B. Polyphase Motors:

1. Description: NEMA MG-1, medium induction motor.

a. Design Characteristics: NEMA MG-1, Design B, unless otherwise indicated.

b. Premium Energy-Efficient Design: All motors.

c. Stator: Copper windings, unless otherwise indicated. Multispeed motors have separate winding for each speed.

d. Rotor: Squirrel cage, unless otherwise indicated.

e. Bearings: Double-shielded, prelubricated ball bearings suitable for radial and thrust loading.

f. Temperature Rise: Match insulation rating, unless otherwise indicated.

g. Insulation: Class F, unless otherwise indicated.

2. Motors Used with Variable-Frequency Controllers: Definite-purpose inverter-fed motors in accordance with NEMA MG-1, Part 31. Ratings, characteristics, and features coordinated with and approved by controller manufacturer.

a. Critical vibration frequencies are not within operating range of controller output.

b. Temperature Rise: Match rating for Class B insulation.

c. Insulation: Class H.

d. Thermal Protection: Where indicated, conform to NEMA MG-1 requirements for thermally protected motors.

C. Single-Phase Motors:

1. Type: As indicated or selected by manufacturer from one (1) of the following, to suit starting torque and other requirements of specific motor application.

a. Permanent-split capacitor.

b. Split-phase start, capacitor run.

c. Capacitor start, capacitor run.

2. Shaded-Pole Motors: Do not use, unless motors are smaller than 1/20 HP.

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3. Thermal Protection: Where indicated or required, internal protection automatically opens power supply circuit to motor when winding temperature exceeds a safe value calibrated to temperature rating of motor insulation. Thermal protection device automatically resets when motor temperature returns to normal range, unless otherwise indicated.

4. Bearings: Ball-bearing type for belt-connected motors and other motors with high radial forces on motor shaft. Sealed, prelubricated sleeve bearings for other single-phase motors.

1.9 CLEANING AND PROTECTION

A. General: During handling and installation of work at project site, each Contractor shall clean and protect work in progress and adjoining work on a basis of perpetual maintenance. Apply suitable protective covering on newly installed work where reasonably required to ensure freedom from damage or deterioration at time of substantial completion; otherwise, clean and perform maintenance on newly installed work as frequently as necessary through remainder of construction period. Adjust and lubricate operable components to ensure operability without damaging effects.

1.10 TEMPORARY HEATING, COOLING AND VENTILATION

A. Existing mechanical systems may be used for temporary heating, cooling and ventilation during construction. New mechanical systems shall not be used for temporary heating, cooling and ventilation. All costs associated with providing temporary heating, cooling and ventilation during construction shall be the responsibility of the Contractor.

1.11 PROJECT CLOSEOUT

A. Closeout Equipment/Systems Operations: Sequence operations properly so that work of project will not be damaged or endangered. Coordinate with seasonal requirements. Operate each item of equipment and each system in a test run of appropriate duration with the Owner's operating personnel present, to demonstrate sustained, satisfactory performance. Adjust and correct operations as required for proper performance. Clean and lubricate each system, and replace dirty filters, excessively worn parts and similar expendable items of the work.

B. Operating Instructions: Conduct a full-day walk-through instruction seminar for the Owner's personnel to be involved in the continued operation and maintenance of mechanical equipment and systems.

Explain the identification system, operational diagrams, emergency and alarm provisions, sequencing requirements, seasonal provisions, security, safety, efficiency and similar features of the systems.

1.12 FINAL COMPLETION

A. The Mechanical Contractors shall not call for a final completion check until the entire Mechanical and

Electrical Equipment and Systems have been installed, adjusted, balanced and in full and complete satisfactory operation and the following certifications of inspection from equipment suppliers have been completed and submitted to the Architect/Engineer. Certifications of Inspections for Mechanical

Equipment are required on the following items of equipment:

1. Pumps (Local Rep).

2. Air terminal devices (Factory Rep).

3. Fans (Local Rep).

4. Temperature control equipment (Manufacturer).

B. The Certifications shall consist of letters signed by Factory-Trained and -Authorized Service Engineers stating the following:

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1. They have inspected all of their equipment on the project.

2. They approve the condition of the equipment and its installation.

3. They have fully checked its operation and certify that it is operating properly.

4. They have noted any problems, conditions or objections that could lead to future operating problems.

C. Documentation of the signed letters of Certification of Inspection shall be furnished in the Operations and Maintenance Manuals, included with the associated equipment.

1.13 FINAL PAYMENT

A. Final Payment will not be made until the Contractor has satisfactorily completed all final inspection items.

1.14 GUARANTEE

A. The one (1) year guarantee period shall not start until the project is fully completed and the Contractor has received the Final Payment and Certificate of Completion.

B. All equipment and all work shall be fully guaranteed, parts, and labor, for one (1) full year from the date of the Certificate of Completion. Repairs made during this period must be fully guaranteed for an additional one (1) year period from the date of repairs.

C. The Mechanical Contractor has the full responsibility to guarantee all equipment and work and shall assume full responsibility to repair any equipment at his cost that the manufacturer refuses to guarantee.

D. The Owner has the right to order repairs to any equipment or work provided hereon and to charge the

Contractor for same if repairs are not made by the Contractor within a reasonable period of time not to exceed 24 hours during an emergency or 72 hours on a non-critical item.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 PAINTING AND FINISHING

A. Painting of exposed mechanical work is specified and performed under other divisions of these specifications.

B. Factory finishes, shop priming, and special protective coatings are specified in the individual equipment specification sections.

C. Where factory finishes are provided on equipment and no additional field painting is specified, all marred or damaged surfaces shall be touched up or refinished so as to leave a smooth, uniform finish at the time of final inspection.

D. Paint inside of ductwork black, where it can be seen from occupied spaces through diffusers, grilles or louvers (under any lighting condition).

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END OF SECTION

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SECTION 23 00 10

SHOP DRAWINGS

A. Drawings and general provisions of Contract, including General and Supplementary Conditions, apply to this Section.

1.2 GENERAL

A. Shop Drawing Submittals shall include specially prepared technical data for this project, including drawings, diagrams, performance curves, data sheets, schedules, templates, patterns, reports, calculations, instructions, measurements and similar information not in standard printed form for general application to a range of similar projects.

B. Shop Drawing Submittals shall also include product data which includes standard printed information on materials, products and systems; not specially prepared for this project, but with the designation of selections from among available choices for this project clearly identified.

1.3 SUBMITTAL REQUIREMENTS

A. Coordination and Sequencing: Coordinate preparation and processing of submittals with performance of the work so that work will not be delayed by submittals. Coordinate and sequence different categories of submittals for same work, and for interfacing units of work, so that one will not be delayed for coordination of Architect/Engineer's review with another.

B. Preparation of Submittals: Provide permanent marking on each submittal to identify project, date, Contractor, Subcontractor, submittal name and similar information to distinguish it from other submittals. Show Contractor's executed review and approval marking and providing space for

Architect's/Engineer's "Action" marking. Package each submittal appropriately for transmittal and handling. Submittals which are received from sources other than through Contractor's office will be returned by Architect/Engineer "Without Action".

C. Provide Contractor's certification on form, ready for execution, stating that information submitted complies with requirements of contract documents.

D. The Contractor shall be responsible for and bear any expense of alterations to the building or its appurtenances resulting from the substitution of equipment to that specified in the Contract

Documents.

E. Review of shop drawings does not release the Contractor from further satisfactory operating responsibilities. Material and equipment shall be approved for final acceptance when construction is completed and all units and systems have been operated, tested, adjusted and balanced to the satisfaction of the Architect/Engineer. Should proposed approved alternate equipment involve rearrangement of designed equipment, a complete layout of the area involved shall be submitted by the

Contractor, and shall be approved in writing before installation of any such items of equipment. Any additional expense involved shall be a Contractor-borne expense.

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1.4 SUBMITTAL LIST

A. Shop Drawings shall be submitted for, but not limited to, the items listed in each section of the specifications. Submittals, in addition to those listed, may be required by the Architect/Engineer. The following shop drawing submittal register page(s) is a summary list of submittals required for the project.

SHOP DRAWING SUBMITTAL REGISTER

SECTION ITEM TRANS # DATE REC.

BY A/E

DATE

RETURNED

23 00 00 O&M Manuals

23 00 00 Record Drawings

23 05 00 Coordination Drawings

23 05 93 Test & Balance Report

23 09 00 Controls (Electric)

23 09 93 Sequence of Operation

23 20 00 Pumps

23 20 11 Heat Transfer Packages

23 21 13 Hydronic Specialties

23 22 13 Steam Specialties

23 25 00 Hydronic Systems Treatment

23 30 00 Ductwork Layout

23 30 00 Smoke Dampers

23 30 00 Diffusers, Registers & Grilles

23 30 00 Air Flow Measurement Station

23 73 13 Air Handling Units

23 82 00 Chilled Beams

23 82 00 Heat Exchangers

23 84 13 Humidifiers

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SECTION 23 01 30

HVAC AIR-DISTRIBUTION SYSTEM CLEANING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of Contract, including General and Supplementary Conditions, apply to this Section.

1.2 SUMMARY

A. Section includes cleaning HVAC air-distribution equipment, ducts, plenums, and system components.

1.3 DEFINITIONS

A. ASCS: Air systems cleaning specialist.

B. NADCA: National Air Duct Cleaners Association.

1.4 SUBMITTALS (NOT USED)

1.5 QUALITY ASSURANCE

A. ASCS Qualifications: A certified member of NADCA.

1. Certification: Employ an ASCS certified by NADCA on a full-time basis.

2. Supervisor Qualifications: Certified as an ASCS by NADCA.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine HVAC air-distribution ducts and system components to determine appropriate methods, tools, and equipment required for performance of the Work.

B. Perform "Project Evaluation and Recommendation" according to NADCA ACR 2006.

C. Prepare written report listing conditions detrimental to performance of the Work.

D. Proceed with work only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Prepare a written plan that includes strategies and step-by-step procedures. At a minimum, include the following:

1. Supervisor contact information.

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2. Work schedule including location, times, and impact on occupied areas.

3. Methods and materials planned for each HVAC component type.

4. Required support from other trades.

5. Equipment and material storage requirements.

6. Exhaust equipment setup locations.

B. Use the existing service openings, as required for proper cleaning, at various points of the HVAC system for physical and mechanical entry and for inspection.

C. Comply with NADCA ACR 2006, "Guidelines for Constructing Service Openings in HVAC Systems" Section.

3.3 CLEANING

A. Comply with NADCA ACR 2006.

B. Remove visible surface contaminants and deposits from within the HVAC system.

C. Systems and Components to Be Cleaned:

1. Ductwork:

a. Supply-air ducts, including turning vanes, to the air-handling unit.

b. Return-air ducts including turning to the air-handling unit.

c. Outside Air-air ducts.

2. Air-Handling Units:

a. Interior surfaces of the unit casing.

b. Coil surfaces compartment.

c. Condensate drain pans.

d. Fans, fan blades, and fan housings.

3. Filters and filter housings.

D. Collect debris removed during cleaning. Ensure that debris is not dispersed outside the HVAC system during the cleaning process.

E. Particulate Collection:

1. For particulate collection equipment, include adequate filtration to contain debris removed.

Locate equipment downwind and away from all air intakes and other points of entry into the building.

2. HEPA filtration with 99.97 percent collection efficiency for particles sized 0.3 micrometer or larger shall be used where the particulate collection equipment is exhausting inside the building, F. Control odors and mist vapors during the cleaning and restoration process.

G. System components shall be cleaned so that HVAC system components are visibly clean.

H. Duct Systems:

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1. Create service openings in the HVAC system as necessary to accommodate cleaning.

2. Mechanically clean duct systems specified to remove all visible contaminants so that the systems are capable of passing the HVAC System Cleanliness Tests (see

NADCA ACR 2006).

I. Debris removed from the HVAC system shall be disposed of according to applicable Federal, state, and local requirements.

J. Mechanical Cleaning Methodology:

1. Source-Removal Cleaning Methods: The HVAC system shall be cleaned using source-removal mechanical cleaning methods designed to extract contaminants from within the HVAC system and to safely remove these contaminants from the facility. No cleaning method, or combination of methods, shall be used that could potentially damage components of the HVAC system or negatively alter the integrity of the system.

a. Use continuously operating vacuum-collection devices to keep each section being cleaned under negative pressure.

b. Cleaning methods that require mechanical agitation devices to dislodge debris that is adhered to interior surfaces of HVAC system components shall be equipped to safely remove these devices. Cleaning methods shall not damage the integrity of HVAC system components or damage porous surface materials such as duct and plenum liners.

K. Antimicrobial Agents and Coatings:

1. Apply antimicrobial agents and coatings if active fungal growth is reasonably suspected or where unacceptable levels of fungal contamination have been verified. Apply antimicrobial agents and coatings according to manufacturer's written recommendations and EPA registration listing after the removal of surface deposits and debris.

2. When used, antimicrobial treatments and coatings shall be applied after the system is rendered clean.

3. Apply antimicrobial agents and coatings directly onto surfaces of interior ductwork.

4. Sanitizing agent products shall be registered by the EPA as specifically intended for use in HVAC systems and ductwork.

3.4 CLEANLINESS VERIFICATION

A. Verify cleanliness according to NADCA ACR 2006, "Verification of HVAC System Cleanliness" Section.

B. Verify HVAC system cleanliness after mechanical cleaning and before applying any treatment or introducing any treatment-related substance to the HVAC system, including biocidal agents and coatings.

C. Perform visual inspection for cleanliness. If no contaminants are evident through visual inspection, the HVAC system shall be considered clean. If visible contaminants are evident through visual inspection, those portions of the system where contaminants are visible shall be re-cleaned and subjected to re-inspection for cleanliness.

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D. Prepare a written cleanliness verification report. At a minimum, include the following:

1. Written documentation of the success of the cleaning.

2. Site inspection reports, initialed by supervisor, including notation on areas of inspection, as verified through visual inspection.

3. Surface comparison test results if required.

4. Gravimetric analysis (nonporous surfaces only).

5. System areas found to be damaged.

3.5 RESTORATION

A. Restore and repair HVAC air-distribution ducts and components according to NADCA ACR 2006, "Restoration and Repair of Mechanical Systems" Section.

B. Restore service openings capable of future reopening. Comply with requirements in Division 23 Section "Metal Ducts." Include location of service openings in Project closeout report.

C. Replace damaged insulation according to "Division 23 Section "HVAC Insulation."

D. Ensure that closures do not hinder or alter airflow.

E. New closure materials, including insulation, shall match opened materials and shall have removable closure panels fitted with gaskets and fasteners.

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SECTION 23 05 00

BASIC HVAC MATERIALS AND METHODS

A. Drawings and general provisions of Contract, including General and Supplementary Conditions, apply

1.2 SUMMARY

A. This Section includes the following basic mechanical materials and methods.

1. Piping materials and installation instructions common to most piping systems.

a. Valves:

(1) Gate

(2) Ball

(3) Plug

(4) Butterfly

(5) Check

b. Piping Specialties:

(1) Pipeline strainers

(2) Pipe sleeves

(3) Dielectric unions

c. Meters and gauges:

(1) Glass thermometers

(2) Pressure gauges

d. Supports and anchors:

(1) Horizontal-piping hangers and supports

(2) Saddles and shields

2. Mechanical identification.

3. Vibration control:

a. Spring isolators

4. Nonshrink grout for equipment installations.

5. Joint sealers for sealing around mechanical materials and equipment; and for sealing penetrations in fire and smoke barriers, floors, and foundation walls.

6. Installation requirements common to piping and equipment specification Sections.

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7. Concrete equipment base construction requirements.

8. Mechanical demolition.

9. Cutting and patching.

10. Piping tests.

B. Pipe and pipe fitting materials are specified in piping system Sections.

1.3 DEFINITIONS

A. Pipe, pipe fittings, and piping include tube, tube fittings, and tubing.

B. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred spaces, pipe and duct shafts, unheated spaces immediately below the roof, spaces above ceilings, unexcavated spaces, crawl spaces, and tunnels.

C. Exposed Interior Installations: Exposed to view indoors. Examples include finished occupied spaces and mechanical equipment rooms.

D. Concealed Interior Installations: Concealed from view and protected from physical contact by building occupants. Examples include above ceilings and in duct shafts.

1.4 SUBMITTALS

A. General: Submit the following according to the Conditions of the Contract.

1.5 QUALITY ASSURANCE

A. Qualify welding processes and operators for structural steel according to AWS D1.1 "Structural

Welding Code Steel."

B. Qualify welding processes and operators for piping according to ASME "Boiler and Pressure Vessel

Code," Section IX, "Welding and Brazing Qualifications."

1. Comply with provisions of ASME B31 Series "Code for Pressure Piping."

2. Certify that each welder has passed AWS qualification tests for the welding processes involved and that certification is current.

C. MSS Compliance: Mark valves in accordance with MSS-25 "Standard Marking System for Valves, Fittings, Flanges and Unions."

D. ANSI Compliance: For face-to-face and end-to-end dimensions of flanged- or welded-end valve bodies, comply with ANSI B16.10 "Face-to-Face and End-to-End Dimensions of Ferrous Valves."

E. FCI Compliance: Test and rate Y-type strainers in accordance with FCI 73-I "Pressure Rating

Standard for Y-type strainers". Test and rate other type strainers in accordance with FCI 78-1

"Pressure Rating Standard for Pipeline Strainers Other than Y-type".

F. UL and FM Compliance: Provide meters, gauges, and supports which are UL-listed and FM approved.

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G. MSS Standard Compliance: Provide pipe hangers and supports of which materials, design, and manufacture comply with MSS SP-58.

H. ASME A13.1 for lettering size, length of color field, colors, and viewing angles of identification devices.

I. Equipment Selection: Equipment of greater or larger power, dimensions, capacities, and ratings may be furnished provided such proposed equipment is approved in writing and connecting mechanical and electrical services, circuit breakers, conduit, motors, bases, and equipment spaces are increased. No additional costs will be approved for these increases, if larger equipment is approved. If minimum energy ratings or efficiencies of the equipment are specified, the equipment must meet the design requirements and commissioning requirements.

1.6 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 prevent entrance of dirt, debris, and moisture.

B. Protect stored pipes and tubes from moisture and dirt. Elevate above grade. When stored inside, do not exceed structural capacity of the floor.

C. Protect flanges, fittings, and piping specialties from moisture and dirt.

D. Protect stored plastic pipes from direct sunlight. Support to prevent sagging and bending.

1.7 SEQUENCING AND SCHEDULING

A. Coordinate mechanical equipment installation with other building components.

B. Arrange for chases, slots, and openings in building structure during progress of construction to allow for mechanical installations.

C. Coordinate the installation of required supporting devices and set sleeves in poured-in-place concrete and other structural components as they are constructed.

D. Sequence, coordinate, and integrate installations of mechanical materials and equipment for efficient flow of the Work. Coordinate installation of large equipment requiring positioning prior to closing in the building.

E. Coordinate connection of electrical services.

F. Coordinate connection of mechanical systems with existing utilities and services. Comply with requirements of governing regulations, franchised service companies, and controlling agencies.

G. Coordinate requirements for access panels and doors where mechanical items requiring access are concealed behind finished surfaces.

1.8 PROJECT CONDITIONS

A. Conditions Affecting Selective Demolition: The following project conditions apply:

1. Protect adjacent materials indicated to remain. Install and maintain dust and noise barriers to keep dirt, dust, and noise from being transmitted to adjacent areas. Remove protection and barriers after demolition operations are complete.

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2. Locate, identify, and protect mechanical services passing through demolition area and serving other areas outside the demolition limits. Maintain services to areas outside demolition limits.

When services must be interrupted, install temporary services for affected areas.

PART 2 - PRODUCTS

2.1 PIPE AND PIPE FITTINGS

A. Refer to individual piping system specification Sections for pipe and fitting materials and joining methods.

B. Pipe Threads: ASME B1.20.1 for factory-threaded pipe and pipe fittings.

2.2 JOINING MATERIALS

A. Pipe Flange Gasket Materials: Suitable for the chemical and thermal conditions of the piping system contents.

1. ASME B16.21, nonmetallic, flat, asbestos-free, 1/8-inch (3mm) maximum thickness, except where thickness or specific material is indicated.

a. Full-Face Type: For flat-face, Class 125 cast-iron and cast-bronze flanges.

b. Narrow-Face Type: For raised-face, Class 250 cast-iron and steel flanges.

2. ASME B16.20 for grooved, ring-joint, steel flanges.

3. AWWA C110, rubber, flat face, 1/8-inch (3mm) thick, except where other thickness is indicated; and full-face or ring type, except where type is indicated.

B. Flange Bolts and Nuts: ASME B18.2.1, carbon steel, except where other material is indicated.

C. Solder Filler Metal: ASTM B 32.

1. Alloy Sn95 or Alloy Sn94: Tin (approximately 95%) and silver (approximately 5%), having

0.10% lead content.

2. Alloy Sn50: Tin (50%) and lead (50%) (for use on nonpotable water systems only).

D. Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for wall thickness and chemical analysis of steel pipe being welded.

E. Flanged, Ductile-Iron Pipe Gasket, Bolts, and Nuts: AWWA C110, rubber gasket, carbon steel bolts and nuts.

F. Couplings: Iron body sleeve assembly, fabricated to match outside diameters of plain-end pressure pipes.

1. Sleeve: ASTM A126, Class B, gray iron.

2. Followers: ASTM A 47 (ASTM A 47M), Grade 32510 or ASTM A 536 ductile iron.

3. Gaskets: Rubber.

4. Bolts and Nuts: AWWA C111.

5. Finish: Enamel paint.

2.3 PIPING SPECIALTIES

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A. Low Pressure Pipeline Strainers:

1. General: Provide strainers full line size of connecting piping, with ends matching piping system materials. Select strainers for 125 PSI working pressure, with Type 304 stainless steel screens, with 3/64-inch perforations at 233 per square inch.

2. Threaded Ends, 2-inches and Smaller: Cast-iron body, screwed screen retainer with centered blowdown fitted with pipe plug.

3. Threaded Ends, 2-1/2-inches and Larger: Cast-iron body, bolted screen retainer with off-center blowdown fitted with pipe plug.

4. Flanged Ends, 2-1/2-inches and Larger: Cast-iron body, bolted screen retainer with off-center blowdown fitted with pipe plug.

5. Butt Welded Ends, 2-1/2-inches and Larger: Schedule 40 cast carbon steel body, bolted screen retainer with off-center blowdown fitted with pipe plug.

6. Grooved Ends, 2-1/2-inches and Larger: Tee pattern, ductile-iron or malleable-iron body and access end cap, access coupling with EDPM gasket.

B. Dielectric Fittings: Assembly or fitting having insulating material isolating joined dissimilar metals to prevent galvanic action and stop corrosion.

1. Description: Combination of copper alloy and ferrous; threaded, solder, plain, and weld neck end types and matching piping system materials.

2. Insulating Material: Suitable for system fluid, pressure, and temperature.

3. Dielectric Unions: Factory-fabricated, union assembly for 250 PSIG (1725 kPa) minimum working pressure at a 180F (82C) temperature.

4. Dielectric Flanges: Factory-fabricated, companion-flange assembly for 150 or 300 PSIG

(1035 kPa or 2070 kPa) minimum pressure to suit system pressures.

5. Dielectric-Flange Insulation Kits: Field-assembled, companion-flange assembly, full-face or ring type. Components include neoprene or phenolic gasket, phenolic or polyethylene bolt sleeves, phenolic washers, and steel backing washers.

a. Provide separate companion flanges and steel bolts and nuts for 150 or 300 PSIG

(1035 kPa or 2070 kPa) minimum working pressure to suit system pressures.

6. Dielectric Couplings: Galvanized-steel coupling, having inert and noncorrosive, thermoplastic lining, with threaded ends and 300 PSIG (2070 kPa) minimum working pressure at 225F

(107C) temperature.

7. Dielectric Nipples: Electroplated steel nipple, having inert and noncorrosive thermoplastic lining, with combination of plain, threaded, or grooved end types and 300 PSIG (2070 kPa) working pressure at 225F (107C) temperature.

C. Mechanical Sleeve Seals: Modular, watertight mechanical type. Components include interlocking synthetic rubber links shaped to continuously fill annular space between pipe and sleeve. Connecting bolts and pressure plates cause rubber sealing elements to expand when tightened.

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D. Sleeves: The following materials are for wall, floor, slab, and roof penetrations:

1. Steel Sheet-Metal: 24-gauge (0.70mm) or heavier galvanized sheet metal, round tube closed with welded longitudinal joint.

2. Steel Pipe: ASTM A 53, Type E, Grade A, Schedule 40, galvanized, plain ends.

3. Cast-Iron: Cast or fabricated wall pipe equivalent to ductile-iron pressure pipe, having plain ends and integral water stop, except where other features are specified.

2.4 VALVES

A. General: Provide factory-fabricated valves recommended by Manufacturer for use in service indicated.

Provide valves of types and pressure ratings indicated; provide proper selection as determined by

Installer to comply with Installation requirements. Provide end connections which properly mate with pipe, tube, and equipment connections. Where more than one type is indicated, selection is Installer's option.

B. Gate Valves: Comply with the following requirements:

1. Gate Valves - 2-Inches and Smaller: MSS SP-80; Class 125, body and bonnet of ASTM B 62 cast bronze, threaded or solder ends, solid disc, copper-silicon alloy stem, brass packing gland, "Teflon" impregnated packing, and malleable iron handwheel. Class 150 valves meeting the above shall be used where pressure requires.

2. Gate Valves - 2-Inches and Smaller: MSS SP-80; Class 150, body and union bonnet as

ASTM B 62 cast bronze, threaded or solder ends, solid disc, copper-silicon alloy stem, brass packing gland, "Teflon" impregnated packing, and malleable iron handwheel. Do not use solder end valves for hot water heating or steam piping applications.

3. Gate Valves - 2-1/2-Inches and Larger: MSS SP-70; Class 125 iron body, bronze mounted, with body and bonnet conforming to ASTM A 126 Class B, flanged ends, and "Teflon" impregnated packing and two-piece backing gland assembly.

C. Ball Valves: Comply with the following requirements:

1. Ball valves - 1-inch and Smaller: Rated for 150 PSI SWP pressure, 600 PSI non-shock WOG pressure; 2-piece construction, bronze body conforming to ASTM B 584 or B61, full port, 316 stainless steel ball, reinforced "Teflon" or "TFE" seats and seals, blowout proof stem, and vinyl-covered steel handle. Provide extended solder ends for condenser water, chilled water, and domestic hot and cold water service; full depth ANSI threaded ends for heating hot water and low pressure steam. Provide 2-inch extended handles of non-thermal conductive material.

Valve pressure ratings shall be cast into the body of the valve.

2. Ball Valves - 1-1/4-Inches to 2-Inches: Rated for 150 PSI SWP pressure, 600 PSI non-shock

WOG pressure; 2-piece construction, bronze body conforming to ASTM B 584 or B61, full port, 316 stainless steel ball, reinforced and replaceable "Teflon" or "TFE" seats and seals, blowout proof stem, and vinyl-covered steel handle. Provide extended solder ends for condenser water, chilled water, and domestic hot and cold water service; full-depth ANSI threaded ends for heating hot water and low pressure steam. Provide 2-inch extended handles of non-thermal conductive material. Valve pressure ratings shall be cast into the body of the valve.

D. Plug Valves: Comply with the following requirements:

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1. Plug Valves - 2-Inches and Smaller: 150 PSI WOG, bronze body, straightaway pattern, square head, threaded ends.

2. Plug Valves - 2-1/2-Inches and Larger: MSS SP-78; 175 PSI WOG, lubricated plug type, semi-steel body, single gland, wrench operated, flanged ends.

E. Butterfly Valves: Comply with the following requirements:

1. Butterfly Valves - 2-1/2-Inches and Larger: MSS SP-67; 200 non-shock PSI, cast iron body conforming to ASTM A 126, Class B. Valves shall have field replaceable EPDM sleeve, with aluminum bronze disc, 400 Series stainless steel stem, and EPDM O-ring stem seals. Sizes

2-1/2-inch through 6-inches shall have 10-position lever operators with locks, and sizes 8-inch through 24-inch shall have gear operators with position indicator. Provide wafer type valve.

Drill and tap valves on dead-end service or requiring additional body strength. Valve shall be capable of bi-directional dead end service with downstream flange removed at full-rated pressure.

F. Check Valves: Comply with the following requirements:

1. Swing Check Valves - 2-Inches and Smaller: MSS SP-80; Class 125, cast bronze body and cap conforming to ASTM B 62, horizontal swing, Y-pattern, with a bronze disc, and having threaded or solder ends. Valve shall be capable of being reground while the valve remains in the line. Class 150 valves meeting the above specifications may be used with threaded end connections where pressure requires or Class 125 valves are not available.

2. Swing Check Valves - 2-1/2-Inches and Larger: MSS SP-71; Class 125 (Class 175 FM approved for fire protection piping systems), cast iron body and bolted cap conforming to

ASTM A 126, Class B; horizontal swing, with a bronze disc or cast iron disc with bronze disc ring, and flanged ends. Valve shall be capable of being refitted while the valve remains in the line.

3. Wafer Check Valves: Class 250, cast iron body; with replaceable bronze seat, and non-slam design lapped and balanced twin bronze flappers and stainless steel trim and torsion spring.

Valve shall be designed to open and close at approximately one foot differential pressure.

2.5 VALVE TAGS

A. Brass Valve Tags: Provide 19-gauge polished brass valve tags for all valves with stamp-engraved piping system abbreviation in 1/4-inch high letters and sequenced valve numbers 1/2-inch high, and with 5/32-inch hole for fastener.

1. Provide 1-1/2-inch diameter tags, except as otherwise indicated.

2. Fill tag engraving with black enamel.

B. Valve Tag Fasteners: Manufacturer's standard solid brass chain (wire link or beaded type), or solid brass S-hooks of the sizes required for proper attachment of tags to valves, and manufactured specifically for that purpose.

2.6 METERS AND GAUGES

A. Thermometers:

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1. General: Provide thermometers of materials, capacities, and ranges indicated, designed and constructed for use in service indicated.

2. Case: Die cast aluminum finished in baked epoxy enamel or hard powder coat finish, glass or acrylic front, 9-inches long.

3. Adjustable Joint: Die cast aluminum, finished to match case, 180 adjustment in vertical plane, 360 adjustment in horizontal plane, with locking device.

4. Tube and Capillary: Blue organic-liquid filled, magnifying lens, ±1 scale division accuracy, shock mounted.

5. Scale: Satin faced, non-reflective white aluminum, permanently etched black markings.

6. Stem: Copper-plated steel, brass or die-cast aluminum, for separable socket, length to suit installation.

7. Thermometer Wells: Provide thermometer wells constructed of brass or stainless steel, pressure rated to match piping system design pressure. Provide 2-inch extension for insulated piping. Provide cap fastened to well when used in a non-permanent thermometer location.

8. Thermometer wells shall be installed at each thermometer and at each point where a temperature sensing device is required by the control specifications.

9. Range: Conform to the following:

a. Hot Water: 30 o F to 240 o F with 2 o F scale divisions.

b. Chilled Water: 0 o F to 100 o F with 1

F scale divisions.

10. Acceptable Manufacturers:

a. Marsh Gauges.

b. Moeller Instruments.

c. Miljoco Corporation.

d. Weiss Instruments.

B. Pressure Gauges:

1. General: Provide pressure gauges of materials, capacities, and ranges indicated, designed and constructed for use in service indicated.

2. Type: General use, ±1% accuracy, ANSI B 40.1 Grade 1A, phosphor bronze bourdon type, bottom connection.

3. Case: Stainless steel, glass or acrylic lens, 4-1/2-inch diameter.

4. Connector: Brass, lower mount with 1/4-inch male NPT.

5. Scale: White coated aluminum, with permanently etched black markings.

6. Accessories:

a. Provide protective coil siphon when used for steam service.

b. Provide each gauge with a shut-off needle valve.

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c. Provide pressure snubber where spikes may be present.

7. Range: Conform to the following:

a. Vacuum: 30-inch Hg - 15 PSI.

b. Water: 0-100 PSI.

c. Steam: 0-200 PSI.

8. Acceptable Manufacturers:

a. Marsh Gauges.

b. Moeller Instruments.

c. Miljoco Corporation.

d. Weiss Instruments.

2.7 SUPPORTS AND ANCHORS

A. Horizontal-Piping Hangers and Supports:

1. General: Except as otherwise indicated, provide factory- fabricated horizontal-piping hangers and supports complying with MSS SP-58, of one (1) of the following MSS types listed, selected by Installer to suit horizontal-piping systems, in accordance with MSS SP-69 and manufacturer's published product information. Use only one (1) type by one (1) manufacturer for each piping service. Select size of hangers and supports to exactly fit pipe size for bare piping, and to exactly fit around piping insulation with saddle or shield for insulated piping.

Provide copper-plated hangers and supports for copper-piping systems.

2. Adjustable Steel Clevis Hangers: MSS Type 1.

3. Yoke Type Pipe Clamps: MSS Type 2.

4. Steel Double Bolt Pipe Clamps: MSS Type 3.

5. Steel Pipe Clamps: MSS Type 4.

6. Pipe Hangers: MSS Type 5.

7. Trapeze type with horizontal angle iron.

B. Saddles and Shields:

1. General: Except as otherwise indicated, provide saddles or shields under piping hangers and supports, factory-fabricated, for all insulated piping. Size saddles and shields for exact fit to mate with pipe insulation.

2. Protection Saddles: MSS Type 39; fill interior voids with segments of insulation matching adjoining insulation.

3. Protection Shields: MSS Type 40; of length recommended by manufacturer to prevent crushing of insulation.

4. Thermal Hanger Shields: Constructed of 360 degree insert of high density, 100 PSI, water-proofed calcium silicate, encased in 360 degree sheet metal shield. Provide assembly of same thickness as adjoining insulation.

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2.8 MECHANICAL IDENTIFICATION

A. Equipment Markers:

1. General: Engraved, color-coded laminated plastic. Include contact-type, permanent adhesive or fasteners to mount on equipment.

2. Terminology: Match drawing schedules as closely as possible unless directed otherwise by

Owner.

3. Data Required:

a. Equipment Description, i.e. Chilled Water Pump.

b. Schedule Mark, i.e. CWP-1.

4. Marker Size: 2-1/2- by 4-inches for main control valves; 4-1/2- by 6-inches for equipment.

B. Plastic Markers:

1. Snap-On Type: Provide manufacturer's standard pre-printed, semi-rigid snap-on, color-coded pipe markers, complying with ANSI A13.1.

2. Small Pipes: For external diameters less than 6-inches (including insulation if any), provide full-band pipe markers, extending 360 around pipe at each location, fastened by the following method:

3. Large Pipes: For external diameters of 6-inch and larger (including insulation if any), provide either full-band or strip-type pipe markers, but not narrower than three (3) times letter height

(and of required length), fastened by one (1) of the following methods:

a. Taped to pipe (or insulation) with color-coded plastic adhesive tape, not less than 1-

1/2-inches wide, full circle at both ends of pipe marker, tape lapped 3-inches.

4. Lettering: Comply with piping system nomenclature as specified, scheduled or shown on drawings, and abbreviate only as necessary for each application length.

a. Arrows: Print each pipe marker with arrows indicating direction of flow, either integrally with piping system service lettering (to accommodate both directions), or as separate unit of plastic.

C. Plastic Tape:

1. General: Provide manufacturer's standard color-coded pressure-sensitive (self-adhesive) vinyl tape, not less than 3 MILS thick.

2. Width: Provide 1-1/2-inch wide tape markers on pipes with outside diameters (including insulation, if any) of less than 6-inches, 2-1/2-inch wide tape for larger pipes.

3. Color: Comply with ANSI A13.1, or as scheduled below:

ITEM BAND COLOR

Steam Supply and Condensate Return Yellow

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ITEM BAND COLOR

Heating Water Yellow

2.9 VIBRATION CONTROL

A. Spring Isolators, Free-Standing: Except as otherwise indicated, provide vibration isolation spring between top and bottom loading plates, and with pad-type isolator bonded to bottom of bottom loading plate. Include studs or cups to ensure centering of spring on plates.