Technical Specifications for the ERI ASR HVAC System Upgrade 4-11-2023.pdf

SPECIFICATIONS

ASR HVAC SYSTEM UPGRADE (ERI)

ERIE, PA

Revision 04.11.2023

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 29 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 53 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

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

SECTION 23 31 13 METAL DUCTS

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

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

SECTION 23 33 00 AIR DUCT ACCESSORIES

SECTION 23 74 16.13 PACKAGED, LARGE-CAPACITY, ROOFTOP

AIR-CONDITIONING UNITS

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 23 CONTROL VOLTAGE ELECTRICAL POWER 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 53 IDENTIFICATION OF ELECTRICAL SYSTEMS

SECTION 26 08 00.13 TESTING AND INSPECTING ELECTRICAL EQUIPMENT

SECTION 26 28 00 ENCLOSED SWITCHES AND CIRCUIT BREAKERS

SECTION 26 28 13 FUSES

HVAC System Upgrade Erie, PA

COMMON WORK RESULTS HVAC

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. HVAC demolition.

2. Equipment installation requirements common to equipment sections.

3. Painting and finishing.

4. 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.

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 FAA. 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 FAA, 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 DEFINITIONS

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

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

1.3 QUALITY ASSURANCE

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

23 01 00 - 2

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. Contractor shall provide five years part and labor extended warranty, included as a line item cost.

PART 2 - PRODUCTS

2.1 PIPE, TUBE, AND FITTINGS

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

2.2

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

D. Solvent Cements for Joining Plastic Piping:

1. PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.

2.3 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.

C. Plastic-to-Metal Transition Unions: MSS SP-107, PVC four-part union. Include brass end, solvent-cement-joint end, rubber O-ring, and union nut.

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 and cap remaining ducts with same or compatible ductwork material.

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

23 01 00 - 3

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 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 JOINT CONSTRUCTION

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

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

C. 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.

D. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore full ID. Join pipe fittings and valves as follows:

1. Apply appropriate tape or thread compound to external pipe threads unless dry seal threading is specified.

2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or damaged. Do not use pipe sections that have cracked or open welds.

E. 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.

3.3 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS

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

B. 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.

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

3.4 PAINTING

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

23 01 00 - 4

3.5 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.

END OF SECTION 23 01 00

EXISTING HVAC AIR DISTRIBUTION

SYSTEM CLEANING - 23 01 30.52 - 1

SECTION 23 01 30.52

EXISTING HVAC AIR DISTRIBUTION SYSTEM CLEANING

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 cleaning existing HVAC air-distribution equipment, ducts, and system components.

B. Related Requirements:

1. Section 23 31 13.00 "Metal Ducts" for cleaning newly installed metal ducts.

2. Section 23 05 93.00 "Testing, Adjusting, Balancing for HVAC" for system flow documentation before cleaning and balancing and following cleaning and restoration.

3. Section 23 33 00.00 "Air Duct Accessories" for restoration of opened ducts and plenums with access doors.

1.3

ACTION SUBMITTALS

A. Product Data:

1. Cleaning agents

2. Antimicrobial surface treatments.

1.4

CLOSEOUT SUBMITTALS

A. Post-Project report.

2.1 HVAC CLEANING AGENTS

A. Description:

1. Formulated for each specific soiled coil condition that needs remedy.

2. Will not corrode or tarnish aluminum, copper, or other metals.

SYSTEM CLEANING - 23 01 30.52 - 2

2.2 ANTIMICROBIAL SURFACE TREATMENT

A. Description: Specific product selected shall be as recommended by the IEP based on the specific antimicrobial needs of the specific Project conditions.

1. Formulated to kill and inhibit growth of microorganisms.

2. EPA-registered for use in HVAC systems and for the specific application in which it will be used.

3. Have no residual action after drying, with zero VOC off-gassing.

4. OSHA compliant.

5. Treatment shall dry clear to allow continued visual observation of the treated surface.

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

D. 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.

E. Comply with NADCA ACR, "Guidelines for Constructing Service Openings in HVAC

Systems" Section.

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.

SYSTEM CLEANING - 23 01 30.52 - 3

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 all air-distribution devices, registers, grilles, and diffusers.

L. Clean non-adhered substance deposits according to NADCA ACR.

M. 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).

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

O. 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 liners.

2. Cleaning Mineral-Fiber Insulation Components:

SYSTEM CLEANING - 23 01 30.52 - 4

a. Fibrous-glass thermal or acoustical insulation elements present in equipment or ductwork shall be thoroughly cleaned with HEPA vacuuming equipment while the HVAC system is under constant negative pressure and shall not be permitted to get wet according to NADCA ACR.

b. Cleaning methods used shall not cause damage to fibrous-glass components and will render the system capable of passing the HVAC System Cleanliness Tests (see

NADCA ACR).

c. Fibrous materials that become wet shall be discarded and replaced.

P. Application of Antimicrobial Treatment:

1. Apply antimicrobial agents and coatings if active fungal growth is determined. Apply antimicrobial agents and coatings according to manufacturer's written recommendations and EPA registration listing after the removal of surface deposits and debris.

2. Apply antimicrobial treatments and coatings after the system is rendered clean.

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

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. System areas found to be damaged.

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

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. Replace fibrous-glass materials that cannot be restored by cleaning or resurfacing. Comply with requirements in Section 23 31 13 "Metal Ducts."

SYSTEM CLEANING - 23 01 30.52 - 5

C. Replace damaged insulation according to Section 23 07 13 "Duct Insulation."

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

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

F. Measure air flows through air-distribution system.

G. 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

SYSTEM CLEANING - 23 01 30.52 - 6

THIS PAGE INTENTIONALLY LEFT BLANK

HANGERS AND SUPPORTS FOR HVAC

PIPING AND EQUIPMENT - 23 05 29 - 1

SECTION 23 05 29

HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and

Supplementary

A. Section Includes:

1. Metal framing systems.

2. Fastener systems.

3. Ductwork supports.

B. Related Requirements:

1. Section 23 31 13 "Metal Ducts" for duct hangers and supports.

A. Product Data: For each type of product.

INFORMATIONAL SUBMITTALS

A. Welding certificates.

1.5

QUALITY ASSURANCE

A. Structural-Steel Welding Qualifications: Qualify procedures and personnel AWS D1.1/D1.1M, "Structural Welding Code - Steel."

according to

2.1 PERFORMANCE REQUIREMENTS

A. Structural Performance: Supports for HVAC ductwork shall withstand the effects of gravity loads and stresses within limits and under conditions indicated according to ASCE/SEI 7.

1. Design ductwork supports capable of supporting combined operating weight of supported ductwork and connected systems and components.

PIPING AND EQUIPMENT - 23 05 29 - 2

2.2 METAL FRAMING SYSTEMS

A. Metal Framing Systems:

1. Standard: Comply with MFMA-4 factory-fabricated components for field assembly.

2. Channels: Continuous slotted carbon steel channel with inturned lips.

3. Channel Width: Selected for applicable load criteria.

4. Channel Nuts: Formed or stamped nuts or other devices designed to fit into channel slot and, when tightened, prevent slipping along channel.

5. Hanger Rods: Continuous-thread rod, nuts, and washer made of carbon steel.

6. Metallic Coating: Pregalvanized G90.

2.3 FASTENER SYSTEMS

A. Mechanical-Expansion Anchors: Insert-wedge-type anchors for use in hardened portland cement concrete; with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used.

1. Outdoor Applications: Stainless steel.

2.4 DUCTWORK SUPPORTS

A. Description: Welded, shop- or field-fabricated ductwork support made from structural carbon-steel shapes.

2.5 MATERIALS

A. Carbon Steel: ASTM A1011/A1011M.

B. Structural Steel: ASTM A36/A36M, carbon-steel plates, shapes, and bars; galvanized.

C. Threaded Rods: Continuously threaded. Zinc-plated or galvanized steel for indoor applications and stainless steel for outdoor applications. Mating nuts and washers of similar materials as rods.

D. Grout: ASTM C1107/C1107M, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and nonmetallic grout; suitable for interior and exterior applications.

1. Properties: Nonstaining, noncorrosive, and nongaseous.

2. Design Mix: 5000-psi, 28-day compressive strength.

3.1 APPLICATION

A. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits.

PIPING AND EQUIPMENT - 23 05 29 - 3

Minimum static design load used for strength determination shall be weight of supported components plus 200 lb.

3.2 SUPPORT INSTALLATION

A. Metal Framing System Installation: Arrange for grouping of parallel runs of piping, and support together on field-assembled strut systems.

B. Fastener System Installation:

1. Install mechanical-expansion anchors in concrete after concrete is placed and completely cured. Install fasteners according to manufacturer's written instructions.

C. Install supports complete with necessary attachments, inserts, bolts, rods, nuts, washers, and other accessories.

3.3 DUCTWORK SUPPORTS

A. Fabricate structural-steel stands to support ductwork ductwork pad.

B. Grouting: Place grout under supports for ductwork and make bearing surface smooth.

C. Provide lateral bracing, to prevent swaying, for ductwork supports.

3.4 METAL FABRICATIONS

A. Cut, drill, and fit miscellaneous metal fabrications for ductwork supports.

B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be shop welded because of shipping size limitations.

C. Field Welding: Comply with AWS D1.1/D1.1M procedures for shielded, metal arc welding;

appearance and quality of welds; and methods used in correcting welding work; and with the following:

1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap.

3. Remove welding flux immediately.

4. Finish welds at exposed connections so no roughness shows after finishing and so contours of welded surfaces match adjacent contours.

3.5 ADJUSTING

A. Trim excess length of continuous-thread hanger and support rods to 1-1/2 inches.

PIPING AND EQUIPMENT - 23 05 29 - 4

3.6 PAINTING

A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces.

1. Apply paint by brush or spray to provide a minimum dry film thickness of 2.0 mils.

B. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A780/A780M.

3.7 HANGER AND SUPPORT SCHEDULE

A. Comply with MFMA-103 for metal framing system selections and applications that are not specified in piping system Sections.

B. Use mechanical-expansion anchors instead of building attachments where required in concrete construction.

END OF SECTION 23 05 29

IDENTIFICATION FOR HVAC PIPNG

AND EQUIPMENT - 23 05 53 - 1

SECTION 23 05 53

IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

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

1. Equipment labels.

2.1 EQUIPMENT LABELS

A. Plastic Labels for Equipment:

1. Material and Thickness: Multilayer, multicolor, plastic labels for mechanical engraving, 1/8 inch thick, and having predrilled holes for attachment hardware.

2. Letter Color: White.

3. Background Color: Black.

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

5. Minimum Label Size: Length and width vary for required label content, but not less than

2-1/2 by 3/4 inch.

6. Minimum Letter Size: 1/2 inch. Secondary lettering shall be two-thirds to three-quarters the size of principal lettering.

7. 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.

IDENTIFICATION FOR HVAC PIPNG

AND EQUIPMENT - 23 05 53 - 2

3.1 PREPARATION

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

3.2

GENERAL INSTALLATION REQUIREMENTS

A. Coordinate installation of identifying devices with locations of access panels and doors.

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

TESTING, ADJUSTING, AND BALANCING

FOR HVAC - 23 05 93 - 1

SECTION 23 05 93

TESTING, ADJUSTING, AND BALANCING FOR HVAC

1.1 RELATED DOCUMENTS

1.2 SUMMARY

1. Balancing Air Systems:

a. Constant-volume air systems.

2. Testing, adjusting, and balancing existing systems and equipment.

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.

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."

FOR HVAC - 23 05 93 - 2

PART 2 - PRODUCTS (Not Applicable)

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, flow-control devices, 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 HVAC equipment and verify that bearings are greased, belts are aligned and tight, filters are clean, and equipment with functioning controls is ready for operation.

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. 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. Verify that leakage and pressure tests on air distribution systems have been satisfactorily completed.

b. Duct systems are complete with terminals installed.

c. Volume dampers are open and functional.

d. Clean filters are installed.

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

f. Automatic temperature-control systems are operational.

g. 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" and in this Section.

FOR HVAC - 23 05 93 - 3

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

1. After testing and balancing, install test ports and duct access doors that comply with requirements in Section 233300 "Air Duct Accessories."

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.

G. Check for airflow blockages.

H. Check condensate drains for proper connections and functioning.

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

J. Verify that air duct system is sealed as specified in Section 233113 "Metal Ducts."

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:

FOR HVAC - 23 05 93 - 4

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 branch duct to indicated airflows.

1. Measure airflow of branch ducts.

2. Adjust branch duct volume dampers for specified airflow.

3. Re-measure each 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.

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

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

3. Mark all final settings.

4. Measure and record all operating data.

5. Record final fan-performance data.

3.6 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.

7. Verify location and installation of sensors to ensure that they sense only intended temperature or pressure.

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

FOR HVAC - 23 05 93 - 5

3.7 TOLERANCES

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

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

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

3.8 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:

1. Manufacturers' test data.

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

3. 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 performance forms including the following:

a. Conditions of filters.

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

c. Face and bypass damper settings at coils.

FOR HVAC - 23 05 93 - 6

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

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. Center-to-center dimensions of sheave and amount of adjustments in inches.

j. Number, make, and size of belts.

k. Number, type, and size of filters.

2. Motor Data:

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.

f. Center-to-center dimensions of sheave and amount of adjustments in inches.

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. Cooling-coil static-pressure differential in inches wg.

f. Return airflow in cfm.

E. Instrument Calibration Reports:

1. Report Data:

a. Instrument type and make.

b. Serial number.

c. Application.

d. Dates of use.

e. Dates of calibration.

END OF SECTION 23 05 93

DIRECT DIGITAL CONTROL (DDC)

SYSTEM FOR HVAC - 23 09 23 - 1

SECTION 23 09 23

DIRECT DIGITAL CONTROL (DDC) SYSTEM 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. DDC system for monitoring and controlling of HVAC systems.

1.3 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. Product description with complete technical data, performance curves, and product specification sheets.

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

5. Subparagraphs below are only examples of products to include.

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

7. Each submitted piece of product literature shall clearly cross reference specification and drawings that submittal is to cover.

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.

SYSTEM FOR HVAC - 23 09 23 - 2

3. Include details of product assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

4. Plan Drawings indicating the following:

a. Screened backgrounds of walls, structural grid lines, HVAC equipment, ductwork and piping.

b. Room names and numbers with coordinated placement to avoid interference with control products indicated.

c. Exact placement of products in rooms, ducts, and piping to reflect proposed installed condition.

d. Network communication cable and raceway routing.

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

a. I/O points labeled with point names shown. Indicate instrument range, normal operating set points, and alarm set points. Indicate fail position of each damper and valve, if included in Project.

b. I/O listed in table format showing point name, type of device, manufacturer, model number, and cross-reference to product data sheet number.

c. A graphic showing location of control I/O in proper relationship to HVAC system.

d. Wiring diagram with each I/O point having a unique identification and indicating labels for all wiring terminals.

e. Unique identification of each I/O that shall be consistently used between different drawings showing same point.

f. Elementary wiring diagrams of controls for HVAC equipment motor circuits including interlocks, switches, relays and interface to DDC controllers.

g. Narrative sequence of operation.

h. Graphic sequence of operation, showing all inputs and output logical blocks.

6. 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.

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

d. Unique drawing for each panel.

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data:

1. Systems Provider Qualification Data:

2. Manufacturer's qualification data.

3. Testing agency's qualifications data.

B. Sample Warranty: For manufacturer's warranty.

SYSTEM FOR HVAC - 23 09 23 - 3

1.5 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. Testing and commissioning reports and checklists of completed final versions of reports, checklists, and trend logs.

c. As-built versions of submittal Product Data.

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

e. 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.

f. 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.

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

h. Complete original-issue copies of furnished software, including operating systems, custom programming language, operator workstation software, and graphics software.

i. Licenses, guarantees, and warranty documents.

j. FAA training materials.

1.6 QUALITY ASSURANCE

A. DDC System Manufacturer Qualifications:

1. Nationally recognized manufacturer of DDC systems and products.

2. DDC systems with similar requirements to those indicated for a continuous period of five years within time of bid.

3. DDC systems and products that have been successfully tested and in use on at least five past projects.

4. Having complete published catalog literature, installation, operation and maintenance manuals for all products intended for use.

B. DDC System Provider Qualifications:

1. Authorized representative of, and trained by, DDC system manufacturer.

2. Demonstrated past experience with installation of DDC system products being installed for period within five consecutive years before time of bid.

3. Demonstrated past experience on five projects of similar complexity, scope and value.

4. Each person assigned to Project shall have demonstrated past experience.

5. Staffing resources of competent and experienced full-time employees that are assigned to execute work according to schedule.

6. Service and maintenance staff assigned to support Project during warranty period.

SYSTEM FOR HVAC - 23 09 23 - 4

7. Product parts inventory to support on-going DDC system operation for a period of not less than 5 years after Substantial Completion.

1.7 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 Period: One year from date of Substantial Completion.

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.

1. DDC system shall consist of a peer-to-peer network of distributed DDC controllers, operator interfaces, and software.

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.

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

SYSTEM FOR HVAC - 23 09 23 - 5

B. Control Stability: Control variables indicated within the following limits:

1. Temperature, Dry Bulb:

a. Space: Within 1 deg F.

2.3 NETWORK COMMUNICATION PROTOCOL

A. Network communication protocol(s) used throughout entire DDC system shall be open to FAA and available to other companies for use in making future modifications to DDC system.

2.4 SYSTEM SOFTWARE

A. Operator Interface Software:

1. Operators shall be able to perform commands including, but not limited to, the following:

a. Start or stop selected equipment.

b. Adjust set points.

c. Add, modify, and delete time programming.

d. Enable and disable process execution.

e. Lock and unlock alarm reporting for each point.

f. Override control loop set points.

g. Change time and date.

h. Enter and modify analog alarm limits.

i. View limits.

2. Reporting:

a. Generated automatically and manually.

b. Types of Reporting:

1) General listing of points.

2) List points currently in alarm.

3) List of off-line points.

4) List weekly schedules.

B. Graphic Interface Software:

1. Include a full interactive graphical selection means of accessing and displaying system data to operator.

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

3. Dynamic data shall be assignable to graphics.

4. 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.

C. Alarm Handling Software:

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

SYSTEM FOR HVAC - 23 09 23 - 6

2. 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.

3. Alarms display shall include the following:

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

4. Include an unacknowledged alarm indicator on display to alert operator that there are unacknowledged alarms in system. Operator shall be able to acknowledge alarms on an individual basis or through a multiple alarm acknowledge key, depending on alarm class.

2.5 DDC CONTROLLERS

A. DDC system shall consist of a combination of network controllers, programmable application controllers and application-specific controllers to satisfy performance requirements indicated.

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

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

D. 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.

E. Environment Requirements:

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

2.6 PROGRAMMABLE APPLICATION CONTROLLERS

A. General Programmable Application Controller Requirements:

1. Include adequate number of controllers to achieve performance indicated.

2. Controller shall have enough memory to support its operating system, database, and programming requirements.

3. Operating system of controller shall manage input and output communication signals to allow distributed controllers to share real and virtual object information and allow for central monitoring and alarms.

4. Controller shall have a real-time clock.

5. Controller shall continually check status of its processor and memory circuits. If an abnormal operation is detected, controller shall assume a predetermined failure mode and generate an alarm notification.

6. Controllers shall be fully programmable.

B. Communication:

1. Programmable application controllers shall communicate with other devices on network.

C. Serviceability:

SYSTEM FOR HVAC - 23 09 23 - 7

1. Controller shall be equipped with diagnostic LEDs or other form of local visual indication of power, communication, and processor.

2. Wiring and cable connections shall be made to field-removable, modular terminal strips or to a termination card connected by a ribbon cable.

2.7 CONTROLLER SOFTWARE

A. General Controller Software Requirements:

1. Software applications shall reside and operate in controllers.

2. I/O points shall be identified by up to 30-character point name and up to 16-character point descriptor. Same names shall be used at operator workstations.

3. Control functions shall be executed within controllers using DDC algorithms.

4. Controllers shall be configured to use stored default values to ensure fail-safe operation.

Default values shall be used when there is a failure of a connected input instrument or loss of communication of a global point value.

B. Scheduling: Include capability to schedule each point or group of points in system.

C. Binary Alarms:

1. Each binary point shall be set to alarm based on operator-specified state.

2. Include capability to manually disable alarming.

D. Analog Alarms:

1. Each analog object shall have both high and low alarm limits.

2. Alarming shall be able to be manually disabled.

E. Alarm Reporting:

1. Operator shall be able to determine action to be taken in event of an alarm.

2. Alarm shall be able to start programs, be logged in event log, generate custom messages, and display graphics.

F. Control Loops:

1. Support any of the following control loops, as applicable to control required:

a. Two-position (on/off, open/close, slow/fast) control.

G. Anti-Short Cycling:

1. BO points shall be protected from short cycling.

2. Feature shall allow minimum on-time and off-time to be selected.

2.8 ENCLOSURES

A. General Enclosure Requirements:

SYSTEM FOR HVAC - 23 09 23 - 8

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. Supply each enclosure with a complete set of as-built schematics, and wiring diagrams and product literature located in a pocket on inside of door. For enclosures with windows, include pocket on bottom of enclosure.

B. Wall-Mounted:

1. Construct enclosure of steel

2. 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.

3. 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.

2.9 ELECTRICAL POWER DEVICES

A. Transformers:

1. Transformer shall be sized for the total connected load, plus an additional 25 percent of connected load.

2.10 CONTROL WIRE AND CABLE

A. Single Twisted Shielded Instrumentation Cable 24 V and Less:

1. Wire size shall be a minimum No. 18 AWG.

2. Conductors shall be a twisted, 7/24…