Construction Specs.pdf

FAA-QBN-1508557

November 15, 2019

SPECIFICATIONS

ASR HVAC SYSTEM UPGRADE

(GRE)

GREER, SC

WORK RELEASE: ASO – 18-2161

FOR CONSTRUCTION

Prepared for:

DEPARTMENT OF TRANSPORTATION

FEDERAL AVIATION ADMINISTRATION

Southern Region

1701 Columbia Avenue

College Park, Georgia 30337

Prepared by:

TSSC 4 Easter Service Area

3800 Camp Creek Parkway

Building 2400 Suite 106

Atlanta, GA 30331

TABLE OF CONTENTS

SPECIFICATIONS

SECTION 23 01 00 COMMON WORK RESULTS FOR HVAC

SECTION 23 01 30.52 EXISTING HVAC AIR DISTRIBUTION SYSTEM CLEANING

SECTION 23 05 13 COMMON MOTOR REQUIEMENTS FOR HVAC EQUIPMENT

SECTION 23 05 53 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

SECTION 23 09 23 DIRECT DIGITAL CONTROL (DDC) SYSTEM FOR HVAC

SECTION 23 09 23.12 CONTROL DAMPERS

SECTION 23 23 00 REFRIGERANT PIPING

SECTION 23 33 00 AIR DUCT ACCESSORIES

SECTION 23 81 26 SPLIT-SYSTEM AIR-CONDITIONERS

SECTION 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL

SECTION 26 05 00.10 BASIC ELECTRICAL MATERIALS AND METHODS

SECTION 26 05 05 SELECTIVE DEMOLITION FOR ELECTRICAL

SECTION 26 05 19 LOW VOLTAGE CABLES

SECTION 26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

SECTION 26 05 29 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

SECTION 26 05 33 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

SECTION 26 05 33.10 UNDERGROUND CONDUIT FOR ELECTRICAL SYSTEMS

SECTION 26 05 53 IDENTIFICATION OF ELECTRICAL SYSTEMS

SECTION 26 08 00.13 TESTING AND INSPECTING ELECTRICAL EQUIPMENT

SECTION 26 24 16 PANELBOARDS

SECTION 26 28 00 ENCLOSED SWITCHES AND CIRCUIT BREAKERS

SECTION 26 28 13 FUSES

GSP ASR HVAC System Upgrade COMMON WORK RESULTS HVAC

Greer, SC 23 01 00 - 1

SECTION 23 01 00

COMMON WORK RESULTS FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

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

2. Transition fittings.

3. Dielectric fittings.

4. HVAC demolition.

5. Equipment installation requirements common to equipment sections.

6. Painting and finishing.

7. Supports and anchorages.

B. Contractor Qualifications: The Contractor shall have a permanent mailing and street address, telephone number and shall have been in continual business of HVAC systems for not less than

5 years. The Contractor shall be duly licensed to install HVAC systems in the state where the construction is located.

C. General: Work shall be performed in accordance with these specifications and good practice.

No modifications to these specifications will be accepted without the expressed written approval of Parsons. It is the Contractor's responsibility to document approval of any such modifications prior to the execution of work. Requirements of these Specifications modified by any addenda, change orders, written approvals and written instructions issued by Parsons, if any, shall be as specifically identified by Section and Paragraph in those addenda, change orders, written approvals and written instructions. Approvals of submittals are subject to additional limitations described elsewhere in these Specifications. Contractor shall field verify information contained on these drawings and is responsible for installation of the system in accordance with the specifications.

D. Removal of Debris and Salvage: Remove rubbish and debris resulting from work on a daily basis. Removal of debris and rubbish from the premises shall be coordinated with the Resident

Engineer.

1.2 SUBMITTALS

A. Product Data: For the following:

1. Transition fittings.

2. Dielectric fittings.

3. Mechanical sleeve seals.

4. Escutcheons.

B. Welding certificates.

Greer, SC 23 01 00 - 2

1.3 QUALITY ASSURANCE

A. 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.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris, and moisture.

PART 2 - PRODUCTS

2.1 JOINING MATERIALS

A. Refer to individual Division 23 piping Sections for special joining materials not listed below.

B. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to

ASTM B 813.

C. Brazing Filler Metals: AWS A5.8, BCuP Series, copper-phosphorus alloys for general-duty brazing, unless otherwise indicated; and AWS A5.8, BAg1, silver alloy for refrigerant piping, unless otherwise indicated.

2.2 TRANSITION FITTINGS

A. Plastic-to-Metal Transition Fittings: PVC one-piece fitting with manufacturer's Schedule 80 equivalent dimensions; one end with threaded brass insert, and one solvent-cement-joint end.

B. Plastic-to-Metal Transition Adaptors: One-piece fitting with manufacturer's SDR 11 equivalent dimensions; one end with threaded brass insert, and one solvent-cement-joint end.

2.3 DIELECTRIC FITTINGS

A. Description: Combination fitting of copper alloy and ferrous materials with threaded, solder-joint, plain, or weld-neck end connections that match piping system materials.

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

Greer, SC 23 01 00 - 3

PART 3 - EXECUTION

3.1 HVAC DEMOLITION

A. 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.

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

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

B. If pipe, 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.

3.2 PIPING SYSTEMS - COMMON REQUIREMENTS

A. Install piping according to the following requirements and Division 23 Sections specifying piping systems.

B. Drawing plans, schematics, and diagrams indicate general location and arrangement of piping systems. Indicated locations and arrangements were used to size pipe and other design considerations. Install piping as indicated unless deviations to layout are approved by the

Resident Engineer.

C. Install piping indicated to be exposed and piping in equipment rooms and service areas at right angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated otherwise.

D. Install piping free of sags and bends.

E. Install fittings for changes in direction and branch connections.

F. Install piping to allow application of insulation.

G. Select system components with pressure rating equal to or greater than system operating pressure.

H. Verify final equipment locations for roughing-in.

I. Refer to equipment specifications in other Sections of these Specifications for roughing-in requirements.

3.3 PIPING JOINT CONSTRUCTION

A. Join pipe and fittings according to the following requirements and Division 23 Sections specifying piping systems.

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B. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

C. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before assembly.

D. Soldered Joints: Apply ASTM B 813, water-flushable flux, unless otherwise indicated, to tube end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using lead-free solder alloy complying with ASTM B 32.

E. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube"

Chapter, using copper-phosphorus brazing filler metal complying with AWS A5.8.

F. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and fittings according to the following:

1. Comply with ASTM F 402 for safe-handling practice of cleaners, primers, and solvent cements.

2. PVC Nonpressure Piping: Join according to ASTM D 2855.

3.4 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS

A. Install equipment to allow maximum possible headroom unless specific mounting heights are 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.

3.5 PAINTING

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

END OF SECTION 23 01 00

GSP ASR HVAC System Upgrade EXISTING HVAC AIR DISTRIBUTION

Greer, SC SYSTEM CLEANING - 23 01 30.52 - 1

SECTION 23 01 30.52

EXISTING HVAC AIR DISTRIBUTION SYSTEM CLEANING

PART 1 - GENERAL

1.1 SUMMARY

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

1.2 ACTION SUBMITTALS

A. Product Data:

1. Cleaning agents

1.3 INFORMATIONAL SUBMITTALS

A. Qualification Data:

B. Field Quality-Control Reports:

1. Project's existing conditions.

2. Evaluations and recommendations, including cleanliness verification.

1.4 CLOSEOUT SUBMITTALS

A. Post-Project report.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.1 PREPARATION

A. Inspect HVAC air-distribution equipment, 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.

C. Existing Conditions Report: Prepare a written report that documents existing conditions of the systems and equipment. Include documentation of existing conditions, including inspection results, photo images, laboratory results, and interpretations of the laboratory results by an IEP.

Greer, SC SYSTEM CLEANING - 23 01 30.52 - 2

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

D. Proceed with work only after conditions detrimental to performance of the Work have been corrected.

E. 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.

F. Mark the position of manual volume dampers and air-directional mechanical devices inside the system prior to cleaning.

3.2 CLEANING

A. Comply with NADCA ACR, including items identified as "recommended," "advised," and

"suggested."

B. Perform electrical lockout and tagout according to FAA/Parson's standards.

C. Remove non-adhered substances and deposits from within the HVAC system.

D. Complete cleaning in accordance with the agreed-upon scope of work.

E. Systems and Components to Be Cleaned: All air-moving and -distribution equipment.

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

G. 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, H. Control odors and mist vapors during the cleaning and restoration process.

I. Mark the position of manual volume dampers and air-directional mechanical devices inside the system prior to cleaning. Restore them to their marked position on completion of cleaning.

J. System components shall be cleaned so that all HVAC system components are visibly clean. On completion, all components must be returned to those settings recorded just prior to cleaning operations.

K. Clean non-adhered substance deposits according to NADCA ACR and the following:

1. Clean airstream surfaces, components, and drains.

2. Ensure that a suitable operative drainage system is in place prior to beginning wash-down procedures.

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L. Air-Distribution Systems:

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

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

NADCA ACR).

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

N. 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.

3.3 CLEANLINESS VERIFICATION

A. Verify cleanliness according to NADCA ACR, "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. Surface-Cleaning Verification: 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.

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. System areas found to be damaged.

A. Photographic Documentation: Provide before and after photos showing effectiveness of the cleaning process.

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3.4 RESTORATION

A. Restore and repair HVAC air-distribution equipment, ducts, and components according to

NADCA ACR, "Restoration and Repair of Mechanical Systems" Section.

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

C. Restore manual volume dampers and air-directional mechanical devices inside the system to their marked position on completion of cleaning.

D. Measure air flows through air-distribution system.

E. Measure static-pressure differential across each coil.

3.5 PROJECT CLOSEOUT

A. Post-Project Report:

1. Post-cleaning photo images.

2. Post-cleaning verification summary.

B. Drawings:

1. Deviations of existing system from FAA/Parson's record drawings.

2. Location of service openings.

END OF SECTION 23 01 30.52

GSP ASR HVAC System Upgrade COMMON MOTOR REQUIREMENTS FOR

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SECTION 23 05 13

COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes general requirements for polyphase, general-purpose, horizontal, small and medium, squirrel-cage induction motors for use on alternating-current power systems up to

600 V and installed at equipment manufacturer's factory or shipped separately by equipment manufacturer for field installation.

1.2 COORDINATION

A. Coordinate features of motors, installed units, and accessory devices to be compatible with the following:

1. Motor controllers.

2. Torque, speed, and horsepower requirements of the load.

3. Ratings and characteristics of supply circuit and required control sequence.

4. Ambient and environmental conditions of installation location.

PART 2 - PRODUCTS

2.1 GENERAL MOTOR REQUIREMENTS

A. Comply with NEMA MG 1 unless otherwise indicated.

2.2 MOTOR CHARACTERISTICS

A. Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 3300 feet above sea level.

B. Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected loads at designated speeds, at installed altitude and environment, with indicated operating sequence, and without exceeding nameplate ratings or considering service factor.

2.3 POLYPHASE MOTORS

A. Description: NEMA MG 1, Design B, medium induction motor.

B. Efficiency: Premium efficient, as defined in NEMA MG 1.

C. Service Factor: 1.15.

GSP ASR HVAC System Upgrade COMMON MOTOR REQUIREMENTS FOR

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D. Rotor: Random-wound, squirrel cage.

E. Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading.

F. Temperature Rise: Match insulation rating.

G. Insulation: Class F.

H. Code Letter Designation:

1. Motors Smaller Than 15 HP: Manufacturer's standard starting characteristic.

I. Enclosure Material: Rolled steel for motor frame sizes smaller than 324T.

PART 3 - EXECUTION (Not Applicable)

END OF SECTION 23 05 13

GSP ASR HVAC System Upgrade IDENTIFICATION FOR HVAC PIPNG

Greer, SC AND EQUIPMENT - 23 05 53 - 1

SECTION 23 05 53

IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Equipment labels.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

PART 2 - PRODUCTS

2.1 EQUIPMENT LABELS

A. Plastic Labels for Equipment:

1. Material and Thickness: Multilayer, multicolor, plastic labels for mechanical engraving, 1/16 inch thick for indoor applications, 1/8 inch thick for outdoor application.

2. Letter Color: White.

3. Background Color: Black.

4. Maximum Temperature: Able to withstand temperatures up to 160 deg F.

5. Minimum Letter Size: 1/4 inch for name of units if viewing distance is less than 24 inches, 1/2 inch for viewing distances up to 72 inches, and proportionately larger lettering for greater viewing distances. Include secondary lettering two-thirds to three-quarters the size of principal lettering.

6. Adhesive: Contact-type permanent adhesive, compatible with label and with substrate.

B. Label Content: Include equipment's Drawing designation, unique equipment number or other designation determined by the Resident Engineer. Prior to having labels made consult Resident

Engineer for final label content.

PART 3 - EXECUTION

3.1 PREPARATION

A. Clean equipment surfaces of substances that could impair bond of identification devices, including dirt, oil, grease, release agents, and incompatible primers, paints, and encapsulants.

GSP ASR HVAC System Upgrade IDENTIFICATION FOR HVAC PIPNG

Greer, SC AND EQUIPMENT - 23 05 53 - 2

3.2 GENERAL INSTALLATION REQUIREMENTS

A. Coordinate installation of identifying devices with completion of covering and painting of surfaces where devices are to be applied.

3.3 EQUIPMENT LABEL INSTALLATION

A. Install or permanently fasten labels on each major item of mechanical equipment.

B. Locate equipment labels where accessible and visible.

END OF SECTION 23 05 53

GSP ASR HVAC System Upgrade TESTING, ADJUSTING, AND BALANCING

Greer, SC FOR HVAC - 23 05 93 - 1

SECTION 23 05 93

TESTING, ADJUSTING, AND BALANCING 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. Section Includes:

1. Balancing Air Systems:

a. Constant-volume air systems.

2. Testing, Adjusting, and Balancing Equipment:

a. Motors.

b. Condensing units.

3. Control system verification.

1.3 ACTION SUBMITTALS

1. TAB Report: Documentation indicating that Work complies with ASHRAE/IES 90.1, Section 6.7.2.3 - "System Balancing."

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data: Within 30 days of Contractor's Notice to Proceed, submit documentation that the TAB specialist and this Project's TAB team members meet the qualifications specified in "Quality Assurance" Article.

B. Certified TAB reports.

C. Instrument calibration reports, to include the following:

1. Instrument type and make.

2. Serial number.

3. Application.

4. Dates of use.

5. Dates of calibration.

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1.5 QUALITY ASSURANCE

A. TAB Specialists Qualifications: Certified by NEBB or TABB

1. TAB Field Supervisor: Employee of the TAB specialist and certified by NEBB or TABB.

2. TAB Technician: Employee of the TAB specialist and certified by NEBB or TABB as a

TAB technician.

3. NEBB certified TAB specialists shall be third party. They shall not be affiliated with the installing contractor. The installing contractor shall not test and balance their own work.

B. Instrumentation Type, Quantity, Accuracy, and Calibration: Comply with requirements in

ASHRAE 111, Section 4, "Instrumentation."

C. ASHRAE/IES 90.1 Compliance: Applicable requirements in ASHRAE/IES 90.1, Section 6.7.2.3 - "System Balancing."

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine the Contract Documents to become familiar with Project requirements and to discover conditions in systems designs that may preclude proper TAB of systems and equipment.

B. Examine installed systems for balancing devices, such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Verify that locations of these balancing devices are applicable for intended purpose and are accessible.

C. Examine the approved submittals for HVAC systems and equipment.

D. Examine system and equipment installations and verify that field quality-control testing, cleaning, and adjusting specified in individual Sections have been performed.

E. Examine test reports specified in individual system and equipment Sections.

F. Examine operating safety interlocks and controls on HVAC equipment.

G. Report deficiencies discovered before and during performance of TAB procedures. Observe and record system reactions to changes in conditions. Record default set points if different from indicated values.

3.2 PREPARATION

A. Prepare a TAB plan that includes the following:

1. Equipment and systems to be tested.

2. Strategies and step-by-step procedures for balancing the systems.

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3. Instrumentation to be used.

4. Sample forms with specific identification for all equipment.

B. Perform system-readiness checks of HVAC systems and equipment to verify system readiness for TAB work. Include, at a minimum, the following:

1. Airside:

a. Duct systems are complete.

b. Volume dampers are open and functional.

c. Clean filters are installed.

d. Fans are operating, free of vibration, and rotating in correct direction.

e. Automatic temperature-control systems are operational.

f. Suitable access to balancing devices and equipment is provided.

3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING

A. Perform testing and balancing procedures on each system according to the procedures contained in AABC's "National Standards for Total System Balance", NEBB's "Procedural Standards for

Testing, Adjusting, and Balancing of Environmental Systems" and in this Section.

B. Cut insulation, ducts, and equipment cabinets for installation of test probes to the minimum extent necessary for TAB procedures.

1. After testing and balancing, patch probe holes in ducts with same material and thickness as used to construct ducts.

2. Install and join new insulation that matches removed materials.

C. Mark equipment and balancing devices, including damper-control positions and similar controls and devices, with paint or other suitable, permanent identification material to show final settings.

D. Take and report testing and balancing measurements in inch-pound (IP) units.

3.4 GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS

A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and recommended testing procedures. Cross-check the summation of required outlet volumes with required fan volumes.

B. Prepare schematic diagrams of systems' "as-built" duct layouts.

C. Determine the best locations in main and branch ducts for accurate duct-airflow measurements.

D. Locate start-stop and disconnect switches, electrical interlocks, and motor starters.

E. Verify that motor starters are equipped with properly sized thermal protection.

F. Check dampers for proper position to achieve desired airflow path.

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G. Check for airflow blockages.

H. Check condensate drains for proper connections and functioning.

I. Check for proper sealing of air-handling-unit components.

3.5 PROCEDURES FOR CONSTANT-VOLUME AIR SYSTEMS

A. Adjust fans to deliver total indicated airflows within the maximum allowable fan speed listed by fan manufacturer.

1. Measure total airflow.

a. Where duct conditions allow, measure airflow by Pitot-tube traverse. If necessary, perform multiple Pitot-tube traverses to obtain total airflow.

b. Where duct conditions are not suitable for Pitot-tube traverse measurements, a coil traverse may be acceptable.

c. If a reliable Pitot-tube traverse or coil traverse is not possible, measure airflow at terminals and calculate the total airflow.

2. Measure fan static pressures as follows:

a. Measure static pressure directly at the fan outlet or through the flexible connection.

b. Measure static pressure directly at the fan inlet or through the flexible connection.

3. Obtain approval from the Resident Engineer for adjustment of fan speed higher or lower than indicated speed. Comply with requirements in HVAC Sections for air-handling units for adjustment of fans, belts, and pulley sizes to achieve indicated air-handling-unit performance.

4. Do not make fan-speed adjustments that result in motor overload. Consult equipment manufacturers about fan-speed safety factors. Modulate dampers and measure fan-motor amperage to ensure that no overload occurs. Measure amperage in full-cooling, full-heating, economizer, and any other operating mode to determine the maximum required brake horsepower.

B. Adjust volume dampers for main duct, submain ducts, and major branch ducts to indicated airflows.

1. Measure airflow of submain and branch ducts.

2. Adjust submain and branch duct volume dampers for specified airflow.

3. Re-measure each submain and branch duct after all have been adjusted.

C. Adjust air inlets and outlets for each space to indicated airflows.

1. Set airflow patterns of adjustable outlets for proper distribution without drafts.

2. Measure inlets and outlets airflow.

3. Adjust each inlet and outlet for specified airflow.

4. Re-measure each inlet and outlet after they have been adjusted.

D. Verify final system conditions.

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1. Re-measure and confirm that minimum outdoor, return, and relief airflows are within design. Readjust to design if necessary.

2. Re-measure and confirm that total airflow is within design.

3. Re-measure all final fan operating data, rpms, volts, amps, and static profile.

4. Mark all final settings.

5. Measure and record all operating data.

6. Record final fan-performance data.

3.6 PROCEDURES FOR CONDENSING UNITS

A. Verify proper rotation of fans.

B. Measure entering- and leaving-air temperatures.

C. Record fan and motor operating data.

3.7 CONTROLS VERIFICATION

A. In conjunction with system balancing, perform the following:

1. Verify temperature control system is operating within the design limitations.

2. Confirm that the sequences of operation are in compliance with Contract Documents.

3. Verify that controllers are calibrated and function as intended.

4. Verify that controller set points are as indicated.

5. Verify the operation of lockout or interlock systems.

6. Verify that controlled devices are properly installed and connected to correct controller.

B. Reporting: Include a summary of verifications performed, remaining deficiencies, and variations from indicated conditions.

3.8 TOLERANCES

A. Set HVAC system's airflow rates and water flow rates within the following tolerances:

1. Supply and Return: Plus or minus 10 percent.

2. Air Outlets and Inlets: Plus or minus 10 percent.

3.9 FINAL REPORT

A. General: Prepare a certified written report; tabulate and divide the report into separate sections for tested systems and balanced systems.

1. Include a certification sheet at the front of the report's binder, signed and sealed by the certified testing and balancing engineer.

2. Include a list of instruments used for procedures, along with proof of calibration.

3. Certify validity and accuracy of field data.

B. Final Report Contents: In addition to certified field-report data, include the following:

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1. Fan curves.

2. Manufacturers' test data.

3. Field test reports prepared by system and equipment installers.

4. Other information relative to equipment performance; do not include Shop Drawings and

Product Data.

C. General Report Data: In addition to form titles and entries, include the following data:

1. Title page.

2. Name and address of the TAB specialist.

3. Project name.

4. Project location.

5. Engineer's name and address.

6. Contractor's name and address.

7. Report date.

8. Signature of TAB supervisor who certifies the report.

9. Table of Contents with the total number of pages defined for each section of the report.

Number each page in the report.

10. Summary of contents including the following:

a. Indicated versus final performance.

b. Notable characteristics of systems.

c. Description of system operation sequence if it varies from the Contract

Documents.

11. Nomenclature sheets for each item of equipment.

12. Notes to explain why certain final data in the body of reports vary from indicated values.

13. Test conditions for fans and pump performance forms including the following:

a. Conditions of filters.

b. Cooling coil, wet- and dry-bulb conditions.

c. Fan drive settings including settings and percentage of maximum pitch diameter.

d. Settings for supply-air, static-pressure controller.

e. Other system operating conditions that affect performance.

D. Air-Handling-Unit Test Reports: For air-handling units with coils, include the following:

1. Unit Data:

a. Unit identification.

b. Location.

c. Make and type.

d. Model number and unit size.

e. Manufacturer's serial number.

f. Unit arrangement and class.

g. Discharge arrangement.

h. Sheave make, size in inches, and bore.

i. Number, make, and size of belts.

j. Number, type, and size of filters.

2. Motor Data:

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a. Motor make, and frame type and size.

b. Horsepower and rpm.

c. Volts, phase, and hertz.

d. Full-load amperage and service factor.

e. Sheave make, size in inches, and bore.

3. Test Data (Indicated and Actual Values):

a. Total airflow rate in cfm.

b. Total system static pressure in inches wg.

c. Fan rpm.

d. Discharge static pressure in inches wg.

e. Filter static-pressure differential in inches wg.

f. Return airflow in cfm.

E. Round, Flat-Oval, and Rectangular Duct Traverse Reports: Include a diagram with a grid representing the duct cross-section and record the following:

1. Report Data:

a. System and air-handling-unit number.

b. Location and zone.

c. Duct static pressure in inches wg.

d. Duct size in inches.

e. Duct area in sq. ft.

f. Indicated airflow rate in cfm.

g. Actual airflow rate in cfm.

F. Instrument Calibration Reports:

1. Report Data:

a. Instrument type and make.

b. Serial number.

c. Application.

d. Dates of use.

e. Dates of calibration.

3.10 VERIFICATION OF TAB REPORT

A. The TAB specialist's test and balance engineer shall conduct the inspection in the presence of the Resident Engineer.

B. The Resident Engineer shall randomly select measurements, documented in the final report, to be rechecked. Rechecking shall be limited to either 10 percent of the total measurements recorded or the extent of measurements that can be accomplished in a normal 8-hour business day.

C. If rechecks yield measurements that differ from the measurements documented in the final report by more than the tolerances allowed, the measurements shall be noted as "FAILED."

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D. If the number of "FAILED" measurements is greater than 10 percent of the total measurements checked during the final inspection, the testing and balancing shall be considered incomplete and shall be rejected.

E. If TAB work fails, proceed as follows:

1. TAB specialists shall recheck all measurements and make adjustments. Revise the final report and balancing device settings to include all changes; resubmit the final report and request a second final inspection.

2. If the second final inspection also fails, FAA/Parsons may contract the services of another TAB specialist to complete TAB work according to the Contract Documents and deduct the cost of the services from the original TAB specialist's final payment.

F. Prepare test and inspection reports.

END OF SECTION 23 05 93

GSP ASR HVAC System Upgrade DIRECT DIGITAL CONTROL (DDC)

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SECTION 23 09 23

DIRECT DIGITAL CONTROL (DDC) SYSTEM FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. DDC system for monitoring and controlling of HVAC systems.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product include the following:

1. Construction details, material descriptions, dimensions of individual components and profiles, and finishes.

2. Operating characteristics, electrical characteristics, and furnished accessories indicating process operating range, accuracy over range, control signal over range, default control signal with loss of power, calibration data specific to each unique application, electrical power requirements, and limitations of ambient operating environment, including temperature and humidity.

3. Installation, operation and maintenance instructions including factors effecting performance.

4. Bill of materials of indicating quantity, manufacturer, and extended model number for each unique product.

5. When manufacturer's product datasheets apply to a product series rather than a specific product model, clearly indicate and highlight only applicable information.

B. Shop Drawings:

1. General Requirements:

a. Include cover drawing with Project name, location, Contractor and issue date with each Shop Drawings submission.

b. Include a drawing index sheet listing each drawing number and title that matches information in each title block.

2. Include plans, elevations, sections, and mounting details where applicable.

3. Schematic drawings for each controlled HVAC system indicating the following:

4. Control panel drawings indicating the following:

a. Panel dimensions, materials, size, and location of field cable, raceways, and tubing connections.

b. Interior subpanel layout, drawn to scale and showing all internal components, cabling and wiring raceways, nameplates and allocated spare space.

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c. Front, rear, and side elevations and nameplate legend.

5. Description of FAA training.

1.3 INFORMATIONAL SUBMITTALS

A. Qualification Data:

1. Systems Provider Qualification Data:

a. Brief description of past project including physical address, floor area, number of floors, building system cooling and heating capacity and building's primary function.

b. Description of past project DDC system, noting similarities to Project scope and complexity indicated.

B. Field quality-control reports.

C. Sample Warranty: For manufacturer's warranty.

1.4 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For DDC system to include in emergency, operation and maintenance manuals.

1. Include the following:

a. Project Record Drawings of as-built versions of submittal Shop Drawings provided in electronic PDF format.

b. Names, addresses, e-mail addresses and 24-hour telephone numbers of Installer and service representatives for DDC system and products.

c. Operator's manual with procedures for operating control systems including logging on and off, handling alarms, producing point reports, trending data, overriding computer control and changing set points and variables.

d. Programming manuals with description of programming language and syntax, of statements for algorithms and calculations used, of point database creation and modification, of program creation and modification, and of editor use.

e. Engineering, installation, and maintenance manuals that explain how to:

1) Design and install new points, panels, and other hardware.

2) Perform preventive maintenance and calibration.

3) Debug hardware problems.

4) Repair or replace hardware.

f. Documentation of all programs created using custom programming language including set points, tuning parameters, and object database.

g. Backup copy of graphic files, programs, and database on electronic media such as

DVDs.

h. List of recommended spare parts with part numbers and suppliers.

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i. Complete original-issue documentation, installation, and maintenance information for furnished third-party hardware including computer equipment and sensors.

j. Licenses, guarantees, and warranty documents.

k. Recommended preventive maintenance procedures for system components, including schedule of tasks such as inspection, cleaning, and calibration; time between tasks; and task descriptions.

1.5 WARRANTY

A. Manufacturer's Warranty: Manufacturer and Installer agree to repair or replace products that fail in materials or workmanship within specified warranty period.

1. Failures shall be adjusted, repaired, or replaced at no additional cost or reduction in service to FAA.

2. Include updates or upgrades to software and firmware if necessary to resolve deficiencies.

a. Install updates only after receiving written authorization.

3. Warranty service shall occur during normal business hours.

PART 2 - PRODUCTS

2.1 DDC SYSTEM DESCRIPTION

A. Microprocessor-based monitoring and control including analog/digital conversion and program logic. A control loop or subsystem in which digital and analog information is received and processed by a microprocessor, and digital control signals are generated based on control algorithms and transmitted to field devices to achieve a set of predefined conditions.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

2.2 PERFORMANCE REQUIREMENTS

A. Delegated Design: Engage a qualified professional to design DDC system to satisfy requirements indicated.

1. System Performance Objectives:

a. DDC system shall manage HVAC systems.

b. DDC system control shall operate HVAC systems to achieve optimum operating costs while using least possible energy and maintaining specified performance.

c. DDC system shall respond to power failures, HVAC equipment failures, and adverse and emergency conditions encountered through connected I/O points.

d. DDC system shall operate while unattended by an operator and through operator interaction.

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e. DDC system shall record trends and transaction of events and produce report information such as performance, energy, occupancies, and equipment operation.

B. Surface-Burning Characteristics: Products installed in ducts, equipment, and return-air paths shall comply with ASTM E84; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency.

1. Flame-Spread Index: 25 or less.

2. Smoke-Developed Index: 50 or less.

C. Continuity of Operation after Electric Power Interruption:

1. Equipment and associated factory-installed controls, field-installed controls, electrical equipment, and power supply connected to building normal and backup power systems shall automatically return equipment and associated controls to operating state occurring immediately before loss of normal power, without need for manual intervention by operator when power is restored either through backup power source or through normal power if restored before backup power is brought online.

2.3 DDC SYSTEM OPERATOR INTERFACES

A. Operator Means of System Access: Operator shall be able to access entire DDC system through any of multiple means, including, but not limited to, the following:

1. Portable workstation with hardwired connection through LAN port.

2. Touch screen display with hardwired connection through LAN port.

B. Access to system, regardless of operator means used, shall be transparent to operator.

C. Network Ports: For hardwired connection of portable workstation. Network port shall be easily accessible, properly protected, clearly labeled, and installed inside the control panel.

2.4 SYSTEM SOFTWARE

A. Graphic Interface Software:

1. Include a full interactive graphical selection means of accessing and displaying system data to operator. Native language descriptors assigned to menu items are to be operator defined and modifiable under password control.

2. Include a hierarchical-linked dynamic graphic operator interface for accessing and displaying system data and commanding and modifying equipment operation.

3. Descriptors for graphics, points, alarms and such shall be modifiable.

4. Data to be displayed within a graphic shall be assignable regardless of physical hardware address, communication or point type.

5. Points may be assignable to multiple graphics where necessary to facilitate operator understanding of system operation.

6. Display points (physical and software) with dynamic data provided by DDC system with appropriate text descriptors, status or value, and engineering unit.

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7. Use color, rotation, or other highly visible means, to denote status and alarm states. Color shall be variable for each class of points, as chosen by operator.

8. For operators with appropriate privilege, points shall be commanded directly from display.

a. For an analog command point such as set point, current conditions and limits shall be displayed and operator can position new set point.

b. For a digital command point such as valve position, valve shall show its current state such as open or closed.

B. Project-Specific Graphics: Graphics documentation including, but not limited to, the following:

1. Graphic display for each piece of equipment connected to DDC system through a data communications link. Include dynamic indication of all points associated with equipment.

C. Alarm Handling Software:

1. Include alarm handling software to report all alarm conditions monitored and transmitted through DDC controllers.

2. Include first in, first out handling of alarms according to alarm priority ranking, with most critical alarms first, and with buffer storage in case of simultaneous and multiple alarms.

3. Alarm handling shall be active at all times to ensure that alarms are processed even if an operator is not currently signed on to DDC system.

4. Alarms display shall include the following:

a. Indication of alarm condition such as "Abnormal Off," "Hi Alarm," and "Low

Alarm."

b. "Analog Value" or "Status" group and point identification with native language point descriptor.

5. Alarms shall be categorized and processed by class.

a. Class 1:

1) Associated with fire and other extremely critical equipment monitoring functions; have alarm, trouble, return to normal, and acknowledge conditions printed and displayed.

2) All conditions shall cause a local visual and audible alarm and shall require individual acknowledgment to silence audible sound.

b. Class 2:

1) Critical, but not life-safety related, and processed same as Class 1 alarms.

c. Class 3:

1) General alarms.

2) Each new alarm received shall cause a visual and audible alarm. Audible sound shall be silenced by acknowledging alarm.

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6. Include an unacknowledged alarm indicator on display to alert operator that there are unacknowledged alarms in system.

D. Reports and Logs:

1. Each report shall be definable as to data content, format, interval and date.

2. Report data shall be sampled and stored on DDC controller.

3. Operator shall be able to obtain real-time logs of all I/O points by type or status.

4. Reports and logs shall be readily printed and set to be printed either on operator command or at a specific time each day.

2.5 DDC CONTROLLERS

A. DDC controllers shall perform monitoring, control, and other requirements indicated.

B. DDC controllers shall use a multitasking, multiuser, real-time digital control microprocessor with a distributed network database and intelligence.

C. Each DDC controller shall be capable of full and complete operation as a completely independent unit and as a part of a DDC system wide distributed network.

D. Environment Requirements:

1. Controller hardware shall be suitable for the anticipated ambient conditions.

E. Power and Noise Immunity:

1. Controller shall operate at 90 to 110 percent of nominal voltage rating and shall perform an orderly shutdown below 80 percent of nominal voltage.

2. Operation shall be protected against electrical noise of 5 to 120 Hz and from keyed radios with up to 5 W of power located within 36 inches of enclosure.

F. Maintenance and Support: Include the following features to facilitate maintenance and support:

1. Means to quickly and easily access connect to field test equipment.

2. Visual indication that controller electric power is on, of communication fault or trouble, and that controller is receiving and sending signals.

2.6 ENCLOSURES

A. General Enclosure Requirements:

1. House each controller and associated control accessories in a single enclosure. Enclosure shall serve as central tie-in point for control devices such as switches, transmitters, transducers, power supplies and transformers.

2. Include enclosure door with key locking mechanism.

3. Include wall-mounted enclosures with brackets suitable for mounting enclosures to wall.

4. Supply each enclosure with a complete set of as-built schematics

B. Internal Arrangement:

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1. Internal layout of enclosure shall group and protect electric and electronic components associated with a controller, but not an integral part of controller.

2. Arrange layout to group similar products together.

3. Include a barrier between line-voltage and low-voltage electrical and electronic products.

4. Include enclosure field power supply with a toggle-type switch located at entrance inside enclosure to disconnect power.

5. Include enclosure with a line-voltage nominal 20-A duplex receptacle for service and testing tools.

6. Mount products within enclosure on removable internal panel(s).

C. Wall-Mounted, NEMA 250, Type 1:

1. Enclosure shall be NRTL listed according to UL 50 or UL 50E.

2. Construct enclosure of steel, not less than:

a. Enclosure size less than 24 in.: 0.053 in. thick.

b. Enclosure size 24 in. and larger: 0.067 in. thick.

3. Finish enclosure inside and out with polyester powder coating that is electrostatically applied and then baked to bond to substrate.

a. Exterior color shall be ANSI 61 gray.

b. Interior color shall be ANSI 61 gray.

4. Hinged door full size of front face of enclosure and supported using:

a. Enclosures sizes less than 36 in. tall: Multiple butt hinges.

b. Enclosures sizes 36 in. tall and larger: Continuous piano hinges.

5. Internal panel mounting hardware, grounding hardware and sealing washers.

6. Grounding stud on enclosure body.

2.7 RELAYS

A. General-Purpose Relays:

1. Relays shall be heavy duty and rated for at least 10 A at 250-V ac and 60 Hz.

2. Relays shall be either double pole double throw (DPDT) or three-pole double throw, depending on the control application.

3. Use a plug-in-style relay with an eight-pin octal plug for DPDT relays and an 11-pin octal plug for three-pole double-throw relays.

4. Construct the contacts of either silver cadmium oxide or gold.

5. Enclose the relay in a clear transparent polycarbonate dust-tight cover.

6. Relays shall have LED indication and a manual reset and push-to-test button.

7. Performance:

a. Mechanical Life: At least 10 million cycles.

b. Electrical Life: At least 100,000 cycles at rated load.

c. Pickup Time: 15 ms or less.

d. Dropout Time: 10 ms or less.

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e. Pull-in Voltage: 85 percent of rated voltage.

f. Dropout Voltage: 50 percent of nominal rated voltage.

g. Power Consumption: 2 VA.

h. Ambient Operating Temperatures: Minus 40 to 115 deg F.

8. Equip relays with coil transient suppression to limit transients to non-damaging levels.

9. Plug each relay into an industry-standard, 35-mm DIN rail socket. Plug all relays located in control panels into sockets that are mounted on a DIN rail.

10. Relay socket shall have screw terminals. Mold into the socket the coincident screw terminal numbers and associated octal pin numbers.

B. Latching Relays:

1. Relays shall be continuous duty and rated for at least 10 A at 250-V ac and 60 Hz.

2. Relays shall be either DPDT or three-pole double throw, depending on the control application.

3. Use a plug-in-style relay with a multibladed plug.

4. Construct the contacts of either silver cadmium oxide or gold.

5. Enclose the relay in a clear transparent polycarbonate dust-tight cover.

6. Performance:

a. Mechanical Life: At least 10 million cycles.

b. Electrical Life: At least 100,000 cycles at rated load.

c. Pickup Time: 15 ms or less.

d. Dropout Time: 10 ms or less.

e. Pull-in Voltage: 85 percent of rated voltage.

f. Dropout Voltage: 50 percent of nominal rated voltage.

g. Power Consumption: 2 VA.

h. Ambient Operating Temperatures: Minus 40 to 115 deg F.

7. Equip relays with coil transient suppression to limit transients to non-damaging levels.

8. Plug each relay into an industry-standard, 35-mm DIN rail socket. Plug all relays located in control panels into sockets that are mounted on a DIN rail.

9. Relay socket shall have screw terminals. Mold into the socket the coincident screw terminal numbers and associated…