230500_Common Work Results For HVAC.doc

SECTION 230500 - COMMON WORK RESULTS FOR HVAC

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

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

1.2 SUMMARY

A. This Section includes the following:

1. HVAC demolition.

2. Equipment installation requirements common to equipment sections.

3. Painting and finishing.

4. Supports and anchorages.

5. Minimum motor efficiencies.

1.3 REFERENCES

A. Contractor shall purchase copies of the following reference standard and turn over to Owners Field Office.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers: ASHRAE 90.1 – Energy Code for Commercial and High-Rise Residential Buildings

1.4 REGULATORY REQUIREMENTS

A. Products requiring electrical connection: listed and classified by underwriters laboratories, as suitable for the purpose specified and indicated.

1.5 DEFINITIONS

A. Concealed, Exterior Installations: Concealed from view and protected from weather conditions and physical contact by building occupants, but subject to outdoor ambient temperatures. Examples include installations within unheated shelters.

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

C. Exposed, Exterior Installations: Exposed to view outdoors, or subject to outdoor ambient temperatures and weather conditions. Examples include rooftop locations.

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

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

F. Furnish: Contractor shall supply (purchase) item and turn over to others for installation.

G. Install: Others shall purchase item and the contractor shall place item in position for service and or use

H. Provide: Contractor shall furnish (purchase) and completely install item

I. Salvage: Remove all unused existing equipment where accessible and offer all salvage material to the owner. Owner shall have first right of refusal of all salvageable materials removed from the building. Materials not claimed by the owner shall become the property of the contractor. The contractor shall dispose of all material not retained by the owner in a lawful and legal manner away from the site.

J. Storage: To provide a safe warehousing location to protect equipment and components that are to be implemented as part of the project. This includes but not limited to all existing items to be relocated by the owner/contractor and all items purchased by the owner/contractor.

K. The following are industry abbreviations for plastic materials:

1. CPVC: Chlorinated polyvinyl chloride plastic.

2. PE: Polyethylene plastic.

3. PVC: Polyvinyl chloride plastic.

L. The following are industry abbreviations for rubber materials:

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

2. NBR: Acrylonitrile-butadiene rubber.

1.6 SUBMITTALS

A. General Requirements and Supplemental General Requirements - Submittal Procedures: Submittal procedures.

B. General Requirements and Supplemental General Requirements - Submittal Procedures: – Shop Drawings and Samples: Submittal procedures.

C. Submit to architect/engineer for review for the limited purpose of checking for conformance with information given and the design concept expressed in the contract documents.

D. Submit the number of copies which the contractor requires, plus three copies which will be retained by the architect/engineer.

E. Mark each copy to identify applicable products, models, options, and other data. Supplement manufacturers’ standard data to provide information specific to this project.

F. Submit printed instructions for delivery, storage, assembly, installation, start-up, adjusting, and finishing, to the architect/engineer for product data.

G. Product data: published literature: indicate dimensions, weights, capacities, ratings, gages and finishes of materials, electrical characteristics and connection requirements.

H. Shop drawings: indicate assembly, dimensions, weight loading, required clearances, construction details, field connection details, electrical characteristics and connection requirements.

I. Manufacturer’s instructions: include installation instructions.

J. Maintenance data: include instructions for lubrication, replacement parts, motor and drive replacement, spare parts lists, and wiring diagrams.

1.7 SEQUENCING AND SCHEDULING

A. Coordinate mechanical equipment installation with other building components.

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

C. Sequence, coordinate, and integrate installations of mechanical materials and equipment for efficient flow of the Work.

D. Coordinate requirements for access panels and doors if plumbing items requiring access are concealed behind finished surfaces.

1.8 QUALITY ASSURANCE

A. Steel Support Welding: Qualify processes and operators according to AWS D1.1, "Structural Welding Code--Steel."

B. Electrical Characteristics for HVAC Equipment: Equipment of higher electrical characteristics may be furnished provided such proposed equipment is approved in writing and connecting electrical services, circuit breakers, and conduit sizes are appropriately modified. If minimum energy ratings or efficiencies are specified, equipment shall comply with requirements.

C. Furnish and install all necessary equipment and materials required to provide a complete mechanical system as shown on the Drawings.

D. System shall be in place tested (as specified), inspected and approved by all authorities having jurisdiction (where applicable).

E. All systems shall comply with the latest version and all associated references of local and State Building Codes F. Manufacturer qualifications: Company specializing in manufacturing the products specified in this section with minimum three years documented experience.

G. Approved Manufacturers:

1. A listed approved manufacturer does not relieve or relax any specification requirements.

2. All manufactures listed in the specifications and or under addendum still must fully comply with the technical description as described in the project documents.

3. Inferior manufacturers standard offerings of products will not be accepted in lieu of the specified product.

4. The Architect/Engineer shall make the final judgment in determining if a product meets the full intent of the specifications.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Accept products on site in factory-fabricated protective containers, with factory-installed shipping skids and lifting lugs. Inspect for damage.

B. Store in clean dry place and protect from weather and construction traffic. Handle carefully to avoid damage to components, enclosures, and finish.

1.10 COORDINATION

A. Coordinate installation of required supporting devices and other structural components as they are constructed.

1.11 PROJECT CONDITIONS

A. Contract Drawings are in part diagrammatic, intended to convey to the Contractor for the Mechanical Work, the scope of work and indicate general arrangement of equipment and outlets. Follow these drawings in laying out the work. Verify all spaces in which the work will be installed.

B. Verify location of existing utilities before proceeding with the work.

C. Proposed ductwork and ductwork connections to match existing materials being connected into unless noted otherwise.

D. Erect and maintain temporary partitions to prevent spread of dust, odors, and noise to permit continued owner occupancy throughout the building.

E. Work areas are to be kept free of debris at all times and are to be left broom clean at the end of each working day.

F. Adjacent areas are to be protected from dust and debris.

G. Do not close or obstruct egress width to any building or site exit.

H. Contractor shall obtain and pay for required permits from authorities.

I. Conform to applicable code for the work described within the construction documents.

J. Contractors shall follow owner’s safety requirements during construction.

K. Conform to owner’s safety procedures if hazardous or contaminated materials are discovered.

L. The owner shall direct the contractor where to store salvaged items, equipment and materials removed from the work area.

M. The owner shall direct the contractor where construction materials, furniture and equipment to be installed shall be staged and stockpiled during construction.

N. The work specified herein and indicated on drawings shall be completed, tested and made ready for operation prior to turn over to the owner. Unless specifically indicated, all materials and equipment shall be new and first class quality.

PART 2 - PRODUCTS

2.1 MATERIALS

A. All materials and equipment shall be in strict accordance with the parameters hereinafter specified and as shown on the drawings.

B. Materials and equipment furnished shall be new unless noted otherwise.

C. Flanges shall be of U.S. or Canadian manufacturer only.

2.2 ACCESSORIES

A. It is the intent of this specification that all systems and equipment shall be complete with all accessories required to insure a complete system.

2.3 ELECTRICAL CONNECTIONS

A. Provide all required motor disconnects and starters for all equipment motors unless specified and noted elsewhere.

B. It is the HVAC/Mechanical contractor’s responsibility to coordinate with the Electrical Contractor to determine what components are to be provided by each contractor.

C. Equipment that may require starters and disconnects shall include but not limited to fans, pumps, air handlers, compressors, terminal units, etc.

D. All electrical components provided shall be in compliances and sized in accordance with the National Electrical Code NFPA 70.

E. All electrical equipment shall be UL listed

PART 3 - EXECUTION

3.1 HVAC DEMOLITION

A. Refer to Division 02 Section "Minor Demolition for Remodeling" for general demolition requirements and procedures.

B. Disconnect, demolish, and remove HVAC systems, equipment, and components indicated to be removed.

1. Ducts to Be Removed: Remove portion of ducts indicated to be removed and plug remaining ducts with same or compatible ductwork material.

2. Ducts to Be Abandoned in Place: Cap or plug ducts with same or compatible ductwork material.

3. Equipment to Be Removed: Disconnect and cap services and remove equipment.

4. Equipment to Be Removed and Reinstalled: Disconnect and cap services and remove, clean, and store equipment; when appropriate, reinstall, reconnect, and make equipment operational.

5. Equipment to Be Removed and Salvaged: Disconnect and cap services and remove equipment and deliver to Owner.

C. If duct, insulation, or equipment to remain is damaged in appearance or is unserviceable, remove damaged or unserviceable portions and replace with new products of equal capacity and quality.

D. Salvage: Remove all unused existing equipment where accessible and offer all salvage material to the owner. Owner shall have first right of refusal of all salvageable materials removed from the building. Materials not claimed by the owner shall become the property of the contractor. The contractor shall dispose of all material not retained by the owner in a lawful and legal manner away from the site.

E. Contractors shall be required to reclaim refrigerant associated with removed of equipment noted in the contract documents prior to disposal.

3.2 CUTTING AND PATCHING

A. Connection of new services to existing shall be in a neat and approved manner with disturbed services restored to original condition.

B. Do cutting and patching work as noted and as necessary for the installation of the mechanical work.

C. Cut, channel, chase, and drill ceilings, and other surfaces necessary for mechanical installations. Perform cutting by skilled mechanics of trade involved.

D. Repair cut surfaces to match adjacent surfaces.

E. The contractor is responsible for all cutting and patching of existing work to facilitate and to conceal the work described within these documents. All surfaces to be patched shall be finished to match the existing surface. Owner has final say as to the acceptability of the finished patched work.

3.3 INSTALLATION

A. Unless otherwise noted or specified, all materials and equipment shall be installed in strict accordance with the manufacturer’s instructions and recommendations.

B. Do not scale Drawings.

C. The exact location of ductwork shall be determined in the field to:

1.

Provide manufacturer’s recommended clearances.

2.

Avoid interference with existing conditions.

3.

Avoid interference with new work of other trades.

D. Provide additional fittings as required to effect required changes in slope, direction and elevation.

E. Provide additional offsets and fittings as required to accommodate obstructions that are to remain.

F. Do not cut any structural building member without permission of the Architect.

G. Provide volume dampers within the ductwork prior to all re-piped air terminal devices to include but not limited to the following; supply diffusers, return grilles, and exhaust grilles.

H. The actual relative locations ductwork, conduit, receptacles, equipment, etc. shall be adjusted during construction according to final placement of equipment.

I. The contractor shall provide all required offset, transitions, fittings, and components etc. as required to complete the installation of the systems in order to conform to the building structure and existing building systems. This shall include but not be limited to duct systems, etc.

J. All systems serving other areas of owner facilities shall remain active at all times. System shutdowns shall be coordinated with owner field representative as required to accomplish system tie in, system extension and/or system removal work.

K. All work on existing systems that are to remain active during construction shall be coordinated with owner field representative.

L. Contractor is responsible for verification of all dimensions.

M. The layout of ductwork, conduit, boxes, receptacles, equipment etc. is diagrammatic in nature. Provide required offsets to accommodate obstructions and final system placement.

N. Protect remaining ductwork and duct insulation for all ducts that are to remain from damage during construction.

O. Repair all damages to the existing ductwork and exterior duct insulation within the work area that is to remain.

P. Seal off return air grilles during construction.

Q. Remove branch ductwork back to the mains and cap ductwork and label. Typical for all system types.

R. Lay-in frames shall be compatible with the ceiling grid system.

S. Connect new ductwork to existing duct as indicated on the plans. Provide necessary transitions, elbows, etc.

T. Remove existing branch duct, patch and seal airtight all existing ductwork that is to remain. (Typical.)

U. Coordinate location of thermostat with light switches.

V. Professionally clean all system ductwork that is served by the air handling unit system prior to system startup and balancing. This shall include all new and existing ductwork

W. Unless noted otherwise, system components shall not be exposed. All piping and ductwork shall be concealed within the ceilings and wall structures.

X. The drawings do not show all off sets or fittings required for installation. Schematic diagrams convey the pipe configuration and system components, but not all of the pipe/duct fittings required for the final installation are shown.

3.4 PROTECTION

A. All materials, equipment and accessories shall be suitably protected and covered during construction.

B. Damage responsibility: The contractor shall be responsible for any loss or damage caused by him or his workmen to the facility, building surfaces or equipment during the course of construction, and shall be fully responsible for repairing or replacing as required to insure restoration to original condition.

C. Damaged items: Where items scheduled for reuse are found to be in damaged condition, the contractor shall call the attention of the owner to such items and receive further instructions prior to removal. Items damaged during removal shall be repaired or replaced by the contractor at no additional cost to the owner.

D. Repair damages: Promptly repair damage to adjacent facilities by demolition operations at no cost to the owner.

3.5 PAINTING AND FINISHING

A. Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and procedures to match original factory finish.

3.6 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS

A. Install equipment to allow maximum possible headroom unless specific mounting heights are not indicated.

B. Install equipment level and plumb, parallel and perpendicular to other building systems and components in exposed interior spaces, unless otherwise indicated.

C. Install HVAC equipment to facilitate service, maintenance, and repair or replacement of components. Connect equipment for ease of disconnecting, with minimum interference to other installations. Extend grease fittings to accessible locations.

D. Install equipment to allow right of way for piping installed at required slope.

3.7 ERECTION OF METAL SUPPORTS AND ANCHORAGES

A. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor HVAC materials and equipment.

B. Field Welding: Comply with AWS D1.1.

3.8 ERECTION OF WOOD SUPPORTS AND ANCHORAGES

A. Cut, fit, and place wood grounds, nailers, blocking, and anchorages to support, and anchor HVAC materials and equipment.

B. Select fastener sizes that will not penetrate members if opposite side will be exposed to view or will receive finish materials. Tighten connections between members. Install fasteners without splitting wood members.

C. Attach to substrates as required to support applied loads.

3.9 MOTOR EFFICIENCIES

A. The efficiencies of all motors shall meet or exceed those listed in Table 1, NEMA Premium Efficiency Levels.

3.10 CEILING SYSTEM NOTES

A. Lay-in frames shall be compatible with the ceiling grid system.

END OF SECTION

Upgrade The Annex Building HVAC

Common Work Results for HVAC

BIIRU, Newark DE 230500 -

Sheet1

Minimal Nominal Full Load Efficiency (%)

Open Motors Enclosed Motors

No. of Poles 2 4 6 2 4 6

Motor HP.

1 77.0 85.5 82.5 77.0 85.5 82.5

1 1/2 84.0 86.5 86.5 84.0 86.5 87.5

2 85.5 86.5 87.5 85.5 86.5 88.5

3 85.5 89.5 88.5 86.5 89.5 89.5

5 86.5 89.5 89.5 88.5 89.5 89.5

7 1/2 88.5 91.0 90.2 89.5 91.7 91.0

10 89.5 91.7 91.7 90.2 91.7 91.0