14106 Specs.pdf

TRCI Warehouse Refrigeration Upgrades Scope of Work

The scope of work for this project is to completely replace the existing refrigeration system in the warehouse walk in cooler and freezer. This will include the removal and replacement of the evaporator coils, the compressor rack, all refrigeration lines, and all condensation lines. Heat trace to be removed and reinstalled on freezer drains, and all other electrical necessary for this upgrade. Awarded contractor will need to demo and replace existing concrete pad and chain-link fence securing the compressor racks.

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SECTION 23 05 00 - COMMON HVAC MATERIALS AND METHODS

PART 1 - GENERAL

1.1 DESCRIPTION

A. The provisions of the General Conditions for Public Improvement Contracts, i.e.

“The General Conditions”, Supplementary General Conditions, i.e. “SGC”, apply to the HVAC work specified in this Division.

B. The requirements of this Section apply to the HVAC systems specified in these

Specifications and in other Division 23 sections.

C. Provide all items, articles, materials, equipment, operations and/or methods listed, mentioned, shown and/or scheduled on the Drawings and/or in these Specifications, including all labor, supervision, services, permits, fees, and incidentals necessary and required to provide a complete and operable facility with complete systems as shown, specified, and required by applicable codes.

D. The work shall include, but not be limited to, the following systems:

1. Remove and Replace Compressor rack and indoor Evaporators for TRCI

Cooler and Freezer

2. Remove and replace all refrigerant piping

3. Remove and replace all condensate drain piping.

4. Disconeect and reconnect all required electrical

E. Advise sub-contractor, suppliers, and vendors involved in the work specified in this Section of the applicable requirements.

1.2 QUALITY ASSURANCE

A. All work and materials shall conform to all applicable local and state codes and all federal, state and other applicable laws and regulations. All clarifications and modifications which have been cleared with appropriate authorities are listed under the applicable sections. All electrical products shall bear the label of a recognized testing laboratory such as UL or CSA.

B. Whenever the requirements of the Specifications or Drawings exceed those of the applicable code or standard, the requirements of the Specifications and Drawings shall govern.

C. Codes and Standards: Comply with the provisions of the following referenced codes, standards and specifications:

1. Federal Specifications (FS)

2. American National Standards Institute (ANSI)

3. National Electrical Manufacturer's Association (NEMA)

4. National Fire Protection Association (NFPA)

5. Underwriters Laboratories, Inc. (UL)

6. Factory Mutual (FM)

7. International Building Code (IBC) with State and Local Amendments

8. International Mechanical Code (IMC) with State and Local Amendments

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9. Uniform Plumbing Code (UPC) with State and Local Amendments

10. American Society for Testing and Materials (ASTM)

11. Americans with Disabilities Act (ADA)

12. International Fire Code (IFC) with State and Local Amendments

13. Energy Policy Act (EPAct)

14. Manufacturers Standardization Society (MSS)

15. American Gas Association (AGA)

D. Each piece of equipment furnished shall meet all detailed requirements of the Drawings and Specifications and shall be suitable for the installation shown.

Equipment not meeting all requirements shall not be acceptable, even though specified by name. Where two or more units of the same class of equipment are furnished, use product of the same manufacturer; component parts of the entire system need not be products of same manufacturer. Furnish all materials and equipment, new and free from defect and of size, make, type and quality herein specified or approved by the Owner. All materials shall be installed in a neat and professional manner.

E. All apparatus shall be built and installed to deliver its full rated capacity at the efficiency for which it was designed.

F. The Drawings and Specifications are complementary, per The General

Conditions, Section A – General Provisions, A.3 – Interpretation of Contract Documents.

G. Drawings: Do not scale drawings for roughing-in measurements, nor use as shop drawings. Make field measurements and prepare shop drawings as required.

Coordinate work with shop drawings of other specification divisions.

H. Field Wiring: It is the intent of these specifications that all systems shall be complete and operable. Refer to all drawings and specifications, especially the electrical drawings, to determine voltage, phase, circuit ampacity and number of connections provided. Provide all necessary field wiring and devices from the point of connection indicated on the electrical drawings. All equipment shall be installed in compliance with the Electrical Code and the equipment’s UL listing.

Bring to the attention of the Owner in writing, all conflicts, incompatibilities, and/or discrepancies prior to bid per The General Conditions, Section A – General Provisions, A.4 – Examination of Plans, Specifications, & Site.

1.3 WORK OF OTHER DIVISIONS

A. Work under this Division shall be conducted in a manner to cooperate with the installation of such equipment or items as specified in other Divisions.

B. Consult all Drawings and Specifications in this project and become familiar with all equipment to be installed. Coordinate all aspects of the construction with the other trades on the job to ensure that all work and materials required to provide a complete and operational facility are included in the bid.

C. All sections of Division 23 are interrelated and shall be considered in their entirety when interpreting any material, method, or direction listed in any section of Division 23. Individual sections are not written for specific sub-contractors or suppliers but for the General Contractor.

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1.4 SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES (SUBMITTALS)

A. See the General Conditions, Section B – Administration of the Contract, B.18 – Submittals, Shop Drawings, Product Data and Samples for detailed requirements of shop drawings.

1.5 PRODUCT SUBSTITUTION

A. Materials other than those specified may be approved for this project in compliance with the General Conditions, Section B – Administration of the Contract, B.19 – Substitutions.

1.6 CHANGE ORDERS

A. All Change Orders shall be in compliance with the General Conditions, Section D

– Changes in the Work.

1.7 RECORD DOCUMENTS

A. Project Record (As-Installed) Drawings: Shall be in compliance with the General Conditions, Section K- Contract Close-Out, K.1 – Record Documents

B. Operating and Maintenance Manuals: Shall be in compliance with the General

Conditions, Section K- Contract Close-Out, K.2 – Operation and Maintenance Manuals.

C. Systems Manual: Submit separate Systems Manual [30] days prior to scheduling the required Instruction Period. The Systems Manual shall be a hard copy binder with fold out full size drawings, and a CD with all data in electronic format. The Document shall contain at minimum the following:

1. Permit/Construction/Design Drawings.

2. Contractor As-Built Drawings.

3. Single line diagrams for all systems or components that require regular owner adjustment.

4. As-Built Sequence of Operations, Control Drawings, and Original Set

Points for all equipment requiring contractor programming or set up, including but not limited to;

a. HVAC DDC systems.

b. HVAC Equipment.

c. Plumbing/Pump systems.

6. Operating instructions for integrated building systems.

5. Programing instructions.

6. Recommended schedule of maintenance requirements and frequency.

7. Recommended schedule for retesting of commissioned systems with blank test forms from the original commissioning plan.

8. Recommended schedule for calibrating sensors and actuators.

9. Emergency measures and procedures for systems failures.

1.8 WARRANTY

A. Warranty Documents shall be in compliance with the General Conditions, Section I – Corrections of Work, Entire Section Applies.

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B. Where the manufacturer's guarantee exceeds one year, the longer guarantee shall govern and include the Contractor's labor.

PART 2 - PRODUCTS

2.1 GENERAL

A. General: Provide all new materials and equipment, identical to apparatus or equipment in successful operation for a minimum of two years. Provide materials of comparable quality omitted here but necessary to complete the work.

Maximum allowable variation from stated capacities, minus 5% to plus 10% as approved in each case.

B. Compatibility: Provide products which are compatible with other portions of the work and provide products with the proper or correct power and fuel-burning characteristics, and similar adaptations for the project.

C. Efficiency: Heating and cooling equipment shall comply with ASHRAE

Standard 90.1-2019 and the State Energy Code. Where equipment efficiencies are indicated, the use of alternate or substitute manufacturer’s equipment with lower efficiencies is not permitted.

D. Storage and Handling:

1. Delivery: Deliver to project site with manufacturer's labels intact and legible.

2. Handling: Avoid damage.

3. Storage: Inside protected from weather, dirt and construction dust. Where necessary to store outside, elevate well above grade and enclose with durable, waterproof wrapping.

2.4 EXPANSION JOINTS AND LOOPS

A. Flexible Expansion/Seismic Loop: Factory fabricated assembly consisting of two elbows and return bend or three elbows, and two lengths of flexible hose to allow free movement in three axis. Return bend or elbow shall include a drain/vent fitting. Hose shall be corrugated metal style with metal overbraid compatible with the piping materials. Connections to match piping system except connection 2” and larger shall be flanged style. Metraflex “Metraloop” or Unisource “Uni-loops”.

2.5 HANGERS AND SUPPORTS

A. General: Provide factory-fabricated horizontal piping hangers, clamps, hanger rod, inserts, supports, etc., of the indicated MSS type and size. The Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry Practice SP-58 and SP-69 are referenced in this section.

B. Manufacturers: B-Line, Carpenter & Paterson, Grinnell, Michigan, Superstrut, Tolco, Erico, or approved equal. Grinnell figure numbers in parentheses where applicable (or other manufacturers as noted).

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C. Corrosion Protection: Provide materials which are zinc plated or factory painted to prevent corrosion. Prevent electrolysis in the support of copper tubing by the use of hangers and supports which are copper plated, plastic coated, or by other recognized industry methods.

D. Seismic Requirements: Provide seismic restraints in accordance with OSSC

Section 1613. Design restraint systems in accordance with "Seismic Restraint Manual: Guidelines for Mechanical Systems," Second Edition, 1998, SMACNA, or “A Practical Guide to Seismic Restraint” ASHRAE RP-812, 1999.

E. Horizontal Piping Hangers and Supports:

1. Adjustable Clevis Hanger: MSS Type 1 (Fig. 260).

2. Adjustable Band Hanger: MSS Type 7 (Fig. 97), fabricated from steel.

3. Adjustable Swivel-Band Hanger: MSS Type 10 (Fig. 70).

4. Clamp: MSS Type 4 (Fig. 212, 216).

5. Double-Bolt Clamp: MSS Type 3 (Fig. 295A, 295H), including pipe spacers.

6. Adjustable Saddle-Support: MSS Type 36 (Fig. 258) and MSS Type 37

(Fig. 259), including saddle, pipe and reducer. Fabricate base-support from steel pipe and include cast-iron flange or welded-steel plate.

7. Channel Support System: Galvanized, 12 gauge channel and bracket support systems, single or double channel as indicated on the Drawings or as required by piping and equipment weights. Grinnell "Power Strut" channel. Acceptable Manufacturers: Super Strut, Globestrut, Erico, Bee, Kindorf or Unistrut.

8. Rooftop Pipe Stands: MIRO Industries model 24-R, Erico Pipe Pier, PHP, or accepted substitute.

F. Vertical Pipe Clamps:

1. Two-Bolt Riser Clamp: MSS Type 8 (Fig. 261).

2. Four-Bolt Riser Clamp: MSS Type 42 include pipe spacers at inner bolt-holes.

G. Hanger Attachment:

1. Hanger Rod: Rolled threads, zinc plated. Right hand threaded.

2. Turnbuckles: MSS Type 13 (Fig. 230).

3. Weldless Eye-Nut: MSS Type 17 (Fig. 290).

4. Malleable Eye-Socket: MSS Type 16 (Fig. 110R).

5. Clevises: MSS Type 14 (Fig. 299).

H. Building Attachments:

1. Concrete Inserts: MSS Type 18 (Fig. 282), steel or Grinnell Power-Strut PS349 continuous channel. Acceptable Manufacturers: Michigan Hanger, Globestrut, Unistrut, Super Strut, or approved equal.

2. Clamps: MSS Type 19 (Fig. 285, 281), Type 20, 21 (Fig. 225, 226, 131), Type 23 (Fig. 86, 87, 88), Type 25 (Fig. 227), Type 27 through 30 where applicable.

2.6 IDENTIFICATION MARKERS

A. Pipe Markers:

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1. Adhesive pipe markers of width, letter size and background color conforming to ANSI A13.1.

2. Acceptable Manufacturers: Brady B946 with arrow banding tape or similar Seaton, Zeston, MSI, or approved equal.

B. Nameplates:

1. Engraved nameplates, 1/16" thick, laminated 2-ply plastic, bottom ply white, outer ply black, letters formed by exposing bottom ply.

2. Size: 2" by 4" nameplates with 1/4" high letters.

C. Valve Tags:

1. 2" diameter, 18-gauge polished brass tags with 3/16" chain hole and 1/4" high stamped, black-filled service designation.

2. Acceptable Manufacturers: Seaton, Brady, MSI, or approved equal.

2.7 PENETRATION FIRE STOPPING

A. Through-penetration fire stopping system tested and listed by Underwriters Laboratories. Hilti, 3M, Metacaulk, SpecSeal, or approved equal.

B. Select system for proper application based on wall construction, type of penetrating item, wall rating, etc.

PART 3 - EXECUTION

3.1 LAYOUT AND COORDINATION

A. Site Examination: Before starting work, carefully examine site and all contract Drawings in accordance with the General Conditions, Section A – General Provisions, Sub-Section A.4 – Examination of Plans, Specifications, and Site, Entire Section.

B. Utility Locations: The location of existing utilities, wires, conduits, pipes, ducts, or other service facilities are shown in a general way only on the Drawings and are taken from existing records. Ascertain whether any additional facilities other than those shown on the plans may be present and determine the exact location and elevations of all utilities prior to commencing installation.

C. Sleeves, Inserts, Cast-in-Place Work: Provide sleeves, inserts, anchoring devices, cast-in-place work, etc. which must be set in concrete sequenced at the proper time for the project schedule.

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D. Coordination:

1. The drawings are based on equipment of a certain manufacturer and may be identified as such. Where alternate manufacturers or Approved Equals are incorporated into the work, any required design changes are the responsibility of the Contractor in accordance with the General Conditions, Section B – Administration of the Contract, Sub-Section B.19

– Substitutions. Such changes may include changes in utility or system connection sizes, location, or orientation, service clearances, structural support or acoustic considerations.

2. Where the work must be sequenced and positioned with precision in order to fit into the available space, prepare accurate scale shop drawings showing the actual physical dimensions required for the installation and submit prior to purchase/fabrication/installation of any of the elements involved in the coordination in accordance with the General Conditions, Section A – General Provisions, Sub-Section A.4 – Examination of Plans, Specifications, and Site, Entire Section.

3. Cooperate with other trades in furnishing material and information for sleeves, bucks, chases, mountings, backing, foundations and wiring required for installation of mechanical items.

4. Coordinate all work with other trades and determine in advance where interfacing of the mechanical work and other work are required to be connected together. Provide all materials and equipment to make those connections. Submit shop drawings showing required connections where special conditions exist.

E. Discrepancies: Report immediately any error, conflict or discrepancy in Plans, Specifications and/or existing conditions per The General Conditions, Section A – General Provisions, A.4 – Examination of Plans, Specifications, & Site. Do not proceed with any questionable items of work until clarification of same has been made. Should rearrangement or re-routing of piping be necessary, provide for approval the simplest layout possible for that particular portion of the work.

3.2 CONTINUITY OF EXISTING SERVICES

A. Existing water, power, heat, ventilation, air conditioning and other services shall remain in service during new construction work. Coordinate any interruption of these services with the Owner's representative a minimum of three (3) business days in advance. Arrange work to minimize number and extent of all interruptions.

B. Protect from damage active utilities existing and evident by reasonable inspection of the site whether shown or not on the Drawings. Protect, relocate or abandon utilities encountered in the work which are not shown on the Drawings or evident by inspection of the work as directed by the Owner. Maintain continuity of all utility services to existing buildings.

C. All necessary service interruptions of utilities shall be scheduled with the Physical

Plant Manager. Minor interruptions shall require a minimum of three (3) business days prior notification. Major shut down of any utility is to be scheduled between the hours of 5:30 p.m. and 6:00 a.m. and shall require a minimum of five (5) business days prior notice.

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3.3 EQUIPMENT REMOVAL

A. All removed mechanical equipment is the property of the Owner unless indicated otherwise. Disconnect Salvage and return to the owner all such equipment.

B. Disable electrical circuits by disconnection of both ends and make safe with wire nuts or other approved methods. Remove wire and conduit to concealed locations.

C. Reused Equipment: Reconnect piping, wiring and/or controls to restore original equipment functions unless indicated otherwise.

3.4 MECHANICAL EQUIPMENT WIRING

A. Provide all mechanical equipment motors, automatic temperature, limit, float and similar control devices required, with wiring complete from power source indicated on Electrical Drawings.

B. Provide properly rated motor overload and undervoltage protection and all manual or automatic motor operating devices for all mechanical equipment.

C. Equipment and systems shown on the Drawings and/or specified, are based upon requirements of specific manufacturers which are intended as somewhat typical of several makes which may be approved. Provide all field wiring and/or devices necessary for a complete and operable system including controls for the actual selected equipment/system.

D. Provide all starters for mechanical motors. Review Electrical Specifications and

Drawings to determine which mechanical motor starters shall be provided under the Electrical Specification Sections and provide all others.

3.5 GENERAL INSTALLATION

A. Locating and Positioning Equipment: Observe all Codes, Regulations and good common practice in locating and installing mechanical equipment and material so that completed installation presents the least possible hazard. Maintain adequate clearances for repair and service to all equipment and comply with Code requirements.

B. Arrangement: Arrange piping parallel with primary lines of the building construction, and with a minimum of 7' overhead clearance in all areas where possible. Unless indicated otherwise, conceal all piping. Locate operating and control equipment properly to provide easy access, and arrange entire mechanical work with adequate access for operation and maintenance. Give right-of-way to piping which must slope for drainage. Set all equipment level or as recommended by manufacturer. Under no conditions shall beams, girders, footings or columns be cut for mechanical items. Casting of pipes into concrete is prohibited unless so shown on Drawings.

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C. Drip Pans: Provide drip pans under all above ceiling evaporator units and cooling coils. Locate pan immediately below piping and equipment, and extend a minimum of 6" on each side and lengthwise 18" beyond equipment being protected. Fabricate pans 2" deep, of reinforced 20 gauge galvanized sheet metal with watertight seams and rolled or hemmed edges. Provide 3/4" drainage piping, properly discharged to over floor drain or as shown on the Drawings. Comply with Mechanical Code for overflow protection and pipe sizing.

E. Adjusting: Adjust and calibrate all automatic mechanical equipment, temperature controls, float devices, etc. Adjust flow rates at each piece of equipment or fixture.

F. Building Vapor Barrier: Wherever the building insulation vapor barrier is penetrated by piping, hangers, conduits, etc., provide clear self-adhesive tape recommended by the insulation manufacturer around the penetrations.

G. Concrete Work: Coordinate with other work, particularly other concrete work and accessories. Comply with applicable provisions of this Section for mechanical work concrete, including formwork, reinforcement, mix design, materials, admixtures, accessories, (including waterstops), placing of wet concrete, finishing, curing, protecting, testing, submittals and other requirements of the concrete work.

3.6 INSTALLATION OF HANGERS AND SUPPORTS

A. General: Proceed with the installation of hangers, supports and anchors only after the required building structural work has been completed in areas where the work is to be installed. Correct inadequacies including (but not limited to) the proper placement of inserts, anchors and other building structural attachments.

1. Install hangers, supports, clamps, and attachments to support piping and equipment properly from the building structure. Use no wire or perforated metal to support piping, and no supports from other piping or equipment.

For exposed continuous pipe runs, install hangers and supports of the same type and style as installed for adjacent similar piping.

2. Prevent electrolysis in the support of copper tubing by the use of hangers and supports which are copper plated or by other recognized industry methods.

3. Support fire sprinkler piping independently of other piping and in accordance with NFPA Pamphlet 13.

4. Arrange supports to prevent eccentric loading of joists and joist girders.

Locate supports at panel points only.

B. Provisions for Movement:

1. Install hangers and supports to allow controlled movement of piping systems and to permit freedom of movement between pipe anchors, and to facilitate the action of expansion joints, expansion loops, expansion bends and similar units. Install specified seismic restraints to restrict excessive movement.

2. Install hangers and supports so that equipment and piping live and dead loading and stresses from movement shall not be transmitted to connected equipment.

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3. Install hangers and supports to provide the indicated pipe slopes, and so that maximum pipe deflections allowed by ANSI B31 are not exceeded.

Comply with the following installation requirements:

a. Clamps: Attach clamps, including spacers (if any), to piping outside the insulated piping support. Do not exceed pipe stresses allowed by ANSI B31.

b. Insulated Pipe Supports: Insulated pipe supports shall be supplied and installed on all insulated pipe and tubing.

c. Load Rating: All insulated pipe supports shall be load rated by the manufacturer based upon testing and analysis in conformance with ASME B31.1, MSS SP-58, MSS SP-69 and MSS SP-89.

d. Support Type: Manufacturer's recommendations, hanger style and load shall determine support type.

e. Insulated Piping Supports: Where insulated piping with continuous vapor barrier or where exposed to view in finished areas is specified, install hard maple wood insulation shields (Elcen Fig. 216) or steel pipe covering protection shields (MSS type 39) at each hanger.

C. Adjust hangers and supports to bring piping to proper levels and elevations.

D. Provide all necessary structural attachments such as anchors, beam clamps, hanger flanges and brackets in accordance with MSS SP-69. Attachments to beams wherever possible. Supports suspended from other piping, equipment, metal decking, etc., are not acceptable.

E. Horizontal banks of piping may be supported on common steel channel member spaced not more than the shortest allowable span required on the individual pipe.

Maintain piping at its relative lateral position using clamps or clips. Allow lines subject to thermal expansion to roll axially or slide. Size channel struts for piping weights.

F. Installation of drilled-in concrete anchors shall comply with the manufacturer’s instructions for working load, depth of embedment, and spacing between anchors and from the edge of the slab. Use only wedge-style anchors.

G. Seismic Restraints: Install restraints where recommended in SMACNA "Seismic

Restraint Manual" and as required by code. Show analysis of supporting structure, anchorages, and restraints in accordance with OSSC Section 1613 and reference ASCE standard. Seismic restraint system components shall be approved by the California Office of Statewide Health Planning and Development (OSHPD). Acceptable Manufacturers: Amber/Booth, Mason Industries, Tolco, or approved equal.

3.7 HVAC SYSTEM IDENTIFICATION

A. Piping System: Indicate each pipe system by its generic name (abbreviated) as shown/scheduled/specified. Extend the existing or match Owner's color code and/or identification system. Comply with ANSI A13.1 for marker locations, letter sizes, and colors. Include arrows to show direction of flow and "Electric Traced" signs to identify heat cable wrapped piping. Locate pipe labels in accessible areas as follows:

1. Near each valve, meter, gauge, or control device.

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2. Near equipment such as pumps, heat exchangers, water heaters, etc.

3. At piping branch connections.

4. At penetrations (each side) of walls, ceilings, and floors.

5. At access panels and doors.

6. At 25 foot maximum intervals. Provide a minimum of one label above each room where lift-out ceiling is installed. Reduce intervals in congested areas such as mechanical rooms.

B. Valve Identification: Tag all valves with brass disc and chain. Prepare valve charts indicating valve number, size, location, function and normal position. Use no duplicate numbers in Plumbing and Heating systems. Mount glazed frames containing one set of valve charts in the building mechanical room.

C. Equipment: Provide engraved plastic-laminate signs at locations of major equipment such as heat exchangers, pumps, etc. Identify equipment in field same as on drawings. Permanently mount in an appropriate and effective location.

D. Operation Tags: Where needed for proper and adequate information on operation and maintenance of mechanical systems, provide tags of plasticized card stock, either pre-printed or hand printed to convey the message; example: "DO NOT

CLOSE THIS VALVE EXCEPT WHEN THE PUMP IS OFF."

3.8 EQUIPMENT CONNECTIONS

A. Provide complete connections for all items of equipment requiring such connections, including incidental piping, fittings, trim and labor necessary for a finished working installation.

B. Verify the rough-in and finish requirements for all equipment provided under other Divisions of the work and requiring HVAC piping or duct connections with equipment supplier and installer prior to rough-in.

3.9 PROTECTION

A. Protect all work and materials against loss or damage in compliance with the General Conditions, Section F – Job Site Conditions, F.2 – Protection of Workers, Property, and the Public.

3.10 CUTTING AND PATCHING

A. General: Comply with the General Conditions, Section F – Job Site Conditions, F.3 – Cutting and Patching.

3.11 PIPE PENETRATION FIRE STOPPING

A. Install as recommended by manufacturer and in accordance with the product’s UL listing. Below are the minimum installation requirements.

1. Install specified penetrating item(s) with required annular spacing in proper size wall or floor opening. Support penetrating item(s) adequately on both sides of construction.

2. Clean all opening and penetrating item surfaces in penetration area to remove loose debris, dirt, oil, wax, grease, old caulking, etc.

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3. If needed or required for gypsum or concrete block walls, install specified galvanized steel wire mesh or sleeve recessed and centered inside wall around penetrating item(s) so that it is snug against perimeter of opening.

4. When required, install specified type and depth of backing material in annular space, recessed to required fill depth of fire stopping caulking.

5. Gun, trowel, and/or pump fire stopping sealant to specified depth in annular space around penetrating item(s). Trowel sealant surfaces flush with wall or floor surfaces to a smooth, defect-free finish. Where required, apply specified size caulking bead around penetrating item(s) at zero annular contact areas and tool smooth.

3.12 HVAC WORK CLOSEOUT

A. General: Refer to the General Conditions, Section K – Contract Close Out for general closeout requirements. Calibrate all equipment requiring same. Complete each system as shown or specified herein and place in operation except where only roughing-in or partial systems are called for. Each system shall be tested and left in proper operation free of leaks, obstructions, or contamination.

B. Record Drawings: Submit record set of drawings as previously specified in this

Section.

C. Closeout Equipment/Systems Operations: Sequence operations properly so that work of project shall 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 present, and 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.

D. Operating Instructions: Conduct a walk-through instruction seminar for the

Owner's personnel who are to be involved in the continued operation and maintenance of the HVAC equipment and systems per The General Conditions, Section K – Contract Close Out, Sub-Section K.5 - Training. Provide written instructions outlining and explaining the identification system, operational diagrams, emergency and alarm provisions, sequencing requirements, seasonal provisions, security, safety, efficiency and similar features of the systems per The General Conditions, Section K – Contract Close Out, Sub-Section K.2 – Operation & Maintenance Manuals.

END OF SECTION

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SECTION 23 07 00 - HVAC INSULATION

PART 1 – GENERAL

1.1 DESCRIPTION

A. The requirements of this section apply to the insulation of mechanical equipment specified elsewhere in these specifications.

B. Related Work: The requirements of Section 23 05 00, Common HVAC Materials and Methods, also apply to this section.

1.2 QUALITY ASSURANCE

A. Inspection: A certified mechanical insulation shall be performed by inspectors who maintain current certification, by the National Insulation Association or other certified mechanical association, throughout the project to inspect and verify the materials and the total insulation system has been installed correctly in accordance with the specifications and material manufacturer’s instructions.

B. Surface-Burning Characteristics: For insulation and related materials, as determined by testing identical products listed and labeled in accordance with UL 723 or in accordance with ASTM E 84, by a testing and inspecting agency acceptable to authorities having jurisdiction. Factory label insulation and jacket materials and adhesive, mastic, tapes, and cement material containers, with appropriate markings of applicable testing agency.

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

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

C. Insulation Thickness and Thermal Performance: Comply with the provisions of the State of Oregon Energy Efficiency Specialty Code (OSEEC).

D. Composite (Insulation, Jacket or Facing and Adhesives) Fire and Smoke Hazard

Ratings: Not to exceed a flame spread of 25 or smoke development of 50 and containing less than 0.1% by weight deca-PDE fire retardant.

E. Component Ratings of Accessories (Adhesives, Mastics, Cements, Tapes, Finishing Cloth for Fittings): Same as "B" requirements above and permanently treated. No water soluble treatments.

1.3 PRODUCT DELIVERY, STORAGE AND HANDLING

A. General: In addition to the requirements specified in Section 23 05 00, the following apply:

1. Deliver insulation, coverings, cements, adhesives and coatings to the site in factory-fabricated containers with the manufacturer's stamp or label affixed showing fire hazard ratings of the products. Store insulation in original wrappings and protect from weather and construction traffic.

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2. Protect insulation against dirt, water, chemical and mechanical damage.

Do not install damaged insulation. Remove such insulation from project site.

1.4 SUBMITTALS

A. Submit catalog data and performance characteristics for each product specified.

PART 2 – PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Insulating Manufacturers: Johns Manville, Knauf, Armacell, Owens-Corning, Pittsburgh Corning, Pabco, Imcoa, Nomaco, Certain Teed, or approved equal.

Johns Manville products are listed unless indicated otherwise.

B. Adhesive Manufacturers: Foster, 3M, Insul-Coustic, Borden, Kingco, Armacell, or approved equal.

2.2 PIPING INSULATION

A. Exterior Installations: Same as for interior installations except 0.016" aluminum finish jacket.

B. Pipe Temperatures Minus 30 to 180 Deg. F: Flexible, preformed, pre-slit, self-sealing elastomeric pipe insulation, thermal conductivity of 0.27 BTU/hr. sq.

ft./in. at 75 deg. F and vapor transmission rating of 0.2 perms/inch. Armacell AP ArmaFlex or, in concealed locations, Imcoa, Nomaco, or approved equal.

C. Flexible Elastomeric: Closed-Cell or expanded-rubber materials. Comply with

ASTM C534, (Type I for tubular materials OR Type II for sheet materials), Subject to compliance with requirements, provide Armacell ArmaFlex, or a comparable product by one of the following:

1. Aeroflex

2. K-Flex

3. approved equal

2.3 EQUIPMENT INSULATION

A. Equipment Temperatures Below 70 Deg. F: Flexible, closed cell, elastomeric sheet insulation of 5.5 #/cubic feet density and 0.27 thermal conductivity at 75 deg. F. Armacell "AP Armaflex."

B. Equipment Temperatures From 70 to 450 Deg. F: Glass fiber 3 pound density insulation with a 0.23 thermal conductivity at 75 deg. F. Johns Manville "814 Spin-Glas" with "FSK" jacket containing less than 0.1% by weight deca-PDE fire retardant or finished as recommended by manufacturer.

3-24-25 23 07 00 – 3

C. Equipment Temperatures From 350 to 1200 Deg. F: Molded high temperature calcium silicate minimum 12.5 pound density and 0.4 thermal conductivity at 200 deg. F mean temperature. Glass cloth finish, Claremont Diplag or finished as recommended by insulation manufacturer.

D. Exterior Tanks and Equipment Insulation Covering: Same as interior insulation with weatherproof metal or finished as recommended by insulation manufacturer.

2.5 INSULATION ACCESSORIES

A. Insulation Compounds and Materials: Provide rivets, staples, bands, adhesives, cements, coatings, sealers, welded studs, etc., as recommended by the manufacturers for the insulation and conditions specified except staples not permitted on chilled water lines.

B. Interior Tanks and Equipment Insulation Covering: Finished metal jacket or as recommended by the manufacturer for insulation material specified.

C. PVC Protective Jacketing and Valve and Pipe Fitting Covers: Johns Manville

Zeston 2000, Proto LoSmoke, Speedline Smoke Safe, or Ceel-Co Ceel-Tite 100 Series with precut fitting fiberglass insulation or approved equal.

D. Jacket Lap Sealing Adhesives: Foster Drion 85-75 contact cement or approved equal.

E. Saddles and Shields: Install to prevent crushing of insulation at support points.

1. Protection Saddles: MSS Type 39. Armacell Insuguard Multi.

2. Protection Shields: MSS Type 40. Armacell ArmaFix Ecolight.

3. Preinsulated Pipe Supports: Calcium silicate load bearing metal jacketed inserts. Pipe Shields Inc. or accepted substitute.

a. Pipe supported on rods - Models A1000, A2000, A3000, A4000.

b. Pipe supported on flat surfaces - Models A1000, A2000, A3000, A4000.

c. Pipe supported on pipe rolls - Models A3000, A4000, A5000.

d. Vertical riser clamp – Models E1000, E1100, E1200.

PART 3 – EXECUTION

3.1 PIPING INSULATION

A. General: Do not insulate underground piping except at joints and fittings on preinsulated piping unless indicated otherwise.

B. Refrigerant Piping Insulation: Insulate suction piping with minimum 1" thick flexible, closed-cell elastomeric pipe insulation; Ap Armaflex or of thickness necessary to prevent condensation at 85 deg. F and 70% RH. Where possible, slip insulation over the piping as it is installed. Seal all joint and seams.

C. Pipe Fittings:

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1. Insulate and finish all fittings including valve bodies, bonnets, unions, flanges and expansion joints with precut fiberglass insulation and preformed PVC covers sealed to adjacent insulation jacket for continuous vapor barrier covering over all fittings.

D. Protective Covering: Install continuous protective PVC or metal covering on all piping and fittings in mechanical rooms, accessible tunnels, attic spaces, accessible ceilings, etc., where insulation may be subject to damage. Install with rivets or cement seams and joints.

E. Insulated Piping Supports: Where insulated piping with continuous vapor barrier or where exposed to view in finished areas is specified, install hard maple wood insulation shields, insulation inserts, or steel pipe covering protection shields at each hanger.

F. Piping Insulation Lap Seams and Butt Joints: Install insulation jacket in accordance with manufacturer's recommendation. Where jacket joint and lap seams have not adhered, remove affected section of insulation and reinstall or apply lap sealing adhesive in accordance with manufacturer's instructions.

3.2 EXPANSION JOINTS

A. Insulation: Insulate expansion joints on heating and/or cooling piping to match thickness of adjacent piping. Build up piping insulation adjacent to the expansion joints sufficiently to allow internal clearance within the insulation for the diameter of the expansion joint. Fasten one end of the expansion joint insulation securely and provide aluminum or sheet metal on the built-up insulation at the other end to permit movement of the insulation without damage.

B. Finish: Finish as specified for adjacent piping with fireproof covering.

TRCI Coolers Refrigerant Piping System 3-24-25 23 23 00 - 1

SECTION 23 23 00 - REFRIGERANT PIPING SYSTEM

PART 1 - GENERAL

1.1 DESCRIPTION

A. The requirements of this section apply to the refrigerant piping system connecting refrigeration and HVAC equipment specified in other sections of these specifications. Provide pipe, pipe fittings and related items required for complete piping system.

B. Related Work: The requirements of Section 23 05 00, Common HVAC Materials

A. General: ASTM, and ANSI Standards are indicated. In addition, special standards are referenced where neither ASTM nor ANSI Standards are applicable.

Comply with federal and local regulations regarding the handling of refrigerant.

B. Labeling: All piping shall be continuously and legibly labeled on each length as required by codes and standards and including as a minimum, country of origin, manufacturer’s identification marking, wall thickness designation, and applicable standards and approvals. Fittings shall be labeled as required by the referenced standard. Tubular fixture traps shall be stamped with manufacturer’s mark and material thickness.

C. Air Conditioning and Refrigeration Equipment Rating: Rated in accordance with

ARI certified rating procedures and bear the ARI label.

D. Installation Contractor: Manufacturer's authorized installation and start-up agency normally engaged and experienced in air conditioning/refrigeration work and certified in the handling of refrigerant.

1.3 SUBMITTALS

A. Submit catalog data, construction details, and performance characteristics for each type and size of refrigeration equipment per The General Conditions, Section B – Administration of the Contract, Sub-Section B.18 – Submittals, Shop Drawings, Product Data and Samples.

B. Submit operating and maintenance data per The General Conditions, Section K –

Contract Close Out, Sub-Section k.2 – Operation & Maintenance Manuals.

1.4 STORAGE AND HANDLING

A. Provide factory-applied end caps on each length of pipe and tube. Maintain end caps through shipping, storage and handling as required to prevent pipe-end damage and eliminate dirt and moisture from inside of pipe and tube. Protect flanges and fittings from moisture and dirt by inside storage and enclosure, or by packaging with durable, waterproof wrapping.

3-24-25 23 23 00 - 2

PART 2 - PRODUCTS

2.1 PIPING MATERIALS

A. Copper Pipe and Tube:

1. Application: Refrigerant.

2. Pipe: ASTM B88. Type ACR hard temper copper with soldered joints.

Cleaned and sealed at the factory.

3. Refrigerant Fittings: ANSI/ASME B31.5 or SAE J 513-F, "Refrigeration

Tube Fittings." Where conflicts occur, B31.5 shall govern.

4. BOD drawings take precedence for requirements.

2.2 MISCELLANEOUS PIPING MATERIALS/PRODUCTS

A. Brazing Materials: Provide brazing filler rod and flux materials as determined by the installer to comply with installation requirements.

B. Gaskets for Flanged Joints: ANSI B16.21 with pressure and temperature rating required for the service indicated.

PART 3 - EXECUTION

3.1 PIPE INSTALLATION

A. General: Install pipe, tube and fittings in accordance with recognized industry practices. Install each run accurately aligned with a minimum of joints and couplings, but with adequate and accessible unions and flanges for disassembly, maintenance and/or replacement of valves and equipment. Reduce sizes (where indicated) by use of reducing fittings.

B. Piping Runs: Route piping close to and parallel with walls, overhead construction, columns and other structural and permanent-enclosure elements of the building. If not otherwise indicated, run piping in the shortest route which does not obstruct usable space or block access for servicing the building or equipment and avoid diagonal runs. Wherever possible in finished and occupied spaces, conceal piping from view. Do not encase horizontal runs in solid partitions.

C. Refrigerant Piping:

1. Use Type "L" hard drawn copper tubing and make all changes in direction with specified fittings.

2. Lay out the refrigerant piping system in a manner to prevent liquid refrigerant from entering the compressor and so that oil will return to the compressor. Slope all horizontal suction lines toward the compressor.

Take special care to keep all tubing clean and dry.

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3. Install all refrigerant piping straight and free from kinks and restrictions, properly supported to minimize vibration. Provide hangers at 5' spacing for 1/2" lines, 6' spacing for 1" lines and 8' spacing for 1-1/2" and larger lines. Provide flexible connections in lines at condensing unit Submit complete diagram for approval per The General Conditions, Section B – Administration of the Contract, Sub-Section B.18 – Submittals, Shop Drawings, Product Data and Samples.

4. Comply with the refrigerant piping installation instructions of the refrigeration equipment manufacturer.

3.2 PIPING JOINTS

A. General: Provide joints of the type indicated in each piping system, and where piping and joint as manufactured form a system, utilize only that manufacturer's material.

B. Braze Copper Tube and Fitting Joints: Where indicated, in accordance with

ANSI/ASME B31.5. Pass a slow stream of dry nitrogen gas through the tubing at all times while brazing to eliminate formation of copper oxide.

C. Flanged Joints: Match flanges within piping system and at connections with valves and equipment. Clean flange faces and install gaskets. Tighten bolts to provide uniform compression of gasket.

D. Changes in Direction: Use fittings for all changes in direction. Run lines parallel with building surfaces.

E. Unions and Flanges: At all equipment to permit dismantling and elsewhere as consistent with good installation practice.

F. Expansion: Provide loops, swing joints, anchors, runouts and spring pieces to prevent damage to piping or equipment.

3.3 MISCELLANEOUS PIPING EQUIPMENT

A. Floor, Wall and Ceiling Plates: Chrome-plated pressed steel or brass screw locked split plates on all pipe penetrations in finished spaces.

B. Filters: Install in a manner to permit access for removal and replacement of filter cartridge.

C. Sleeves: At all penetrations of concrete or masonry construction. PVC, 24 gauge galvanized steel or Schedule 40 galvanized steel pipe. Fabricate sleeves 1" diameter larger than pipe or insulation. PVC and sheet metal sleeves at non-structural penetrations only.

D. Sleeve Caulking: Grout insulated pipe with cement mortar or approved waterproof mastic. All caulking or grouting shall extend full depth of sleeve.

Install UL sealing caulk, putty and/or system at all penetrations of fire rated walls, floors and ceiling.

3-24-25 23 23 00 - 4

3.4 CLEANING

A. General: Clean all dirt and construction dust and debris from all mechanical piping systems and leave in a new condition. Touch-up paint where necessary.

B. Refrigeration System Piping: If, for any reason, sanitized and sealed-at-the-mill tubing is not used, clean the tubing as follows:

1. Wipe each tube internally with a dry, lintless cloth followed with a clean lintless cloth saturated with recommended refrigerant.

2. Repeat until the saturated cloth is not discolored by dirt.

3. Wipe with a clean cloth saturated with compressor oil and squeezed dry.

4. Wipe with a dry, lintless cloth.

3.5 TEST

A. General:

1. Minimum duration of two hours or longer, as directed for all tests.

Furnish report of test observation signed by qualified inspector per The General Conditions, Section B – Administration of the Contract, Sub- Section – B.4 – Permits, & Sub-Section B.5 – Compliance with Government Laws and Regulations, & Sub-Section B.7 - Inspection.

Make all tests before applying insulation, backfilling, or otherwise concealing piping or connecting fixtures or equipment. Where part of the system must be tested to avoid concealment before the entire system is complete, test that portion separately, same as for entire system.

2. Provide all necessary temporary equipment for testing, including pump and gauges. Remove control devices before testing and do not use piping system valves to isolate sections where test pressure exceeds valve pressure rating. Fill each section with water and pressurize for the indicated pressure and time.

3. Observe each test section for leakage at end of test period. Test fails if leakage is observed or if pressure drop exceeds 5% of test pressure.

B. Repair: Repair piping system sections which fail the required piping test by disassembly and re-installation, using new materials to the extent required to overcome leakage. Do not use chemical stop-leak compounds, solder, mastics, or other temporary repair methods.

C. Refrigerant System:

1. When the refrigerant connections have been completed, close the compressor suction and discharge valves (or receiver outlet valve in the case of condensing unit) and test the balance of the system to near operating pressure with a dry nitrogen.

2. Carefully test all joints, using soap and water or other sudsing solution.

After all joints are tested, discharge the gas and repair all leaks, then repeat the test with a mixture of nitrogen and R-(see drawings) and a halide torch or an electronic leak detector.

3. Evacuate the system to remove moisture and non-condensables. Lower the absolute pressure with a vacuum pump to 1000 microns of mercury.

Apply external heat as required to vaporize moisture.

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4. Dehydrate each refrigerant circuit by satisfactory use of a vacuum pump before charging with refrigerant. Furnish all necessary refrigerant and oil for complete operating charge of the system. Upon completion of the work of construction, test all refrigeration equipment under normal operating conditions and leave in operating order. Adjust automatic temperature controls.

5. After the first 24 hours of operation, measure the pressure drop across the suction filter. If the pressure drop exceeds 5 pounds per square inch, replace the cartridge with a new one, retesting and replacing the cartridge and/or adjusting the system as necessary to achieve a pressure drop of less than 5 pounds per square inch in 24 hours.

TRCI Coolers Central Cooling Equipment 3-24-25 23 60 00 - 1

SECTION 23 60 00 - CENTRAL COOLING EQUIPMENT

PART 1 - GENERAL

1.1 DESCRIPTION

A. The requirements of this section apply to the air conditioning refrigeration systems.

B. Equipment capacity and size shall be as indicated on the Drawings.

C. Related Work: The requirements of Section 23 05 00, Common HVAC Materials

A. Air Conditioning and Refrigeration Equipment Rating: Rated in accordance with ARI certified rating procedures and bear the ARI label.

B. Installation Contractor: Manufacturer's authorized installation and start-up agency normally engaged and experienced in air conditioning/refrigeration work.

1.3 SUBMITTALS

A. Submit catalog data, construction details and performance characteristics for each type and size of refrigeration equipment per The General Conditions, Section B – Administration of the Contract, Sub-Section B.18 – Submittals, Shop Drawings, Product Data and Samples.

B. Submit operating and maintenance data per The General Conditions, Section K…