Multi-Institutional Academic Health Science and Research Center. See attached PCIS Project Addendum Number 2 for the project as a whole.

Transcription

1 Skanska USA Civil Midwest, Inc. Multi-Institutional Academic Health Science and Research Center 413 Walnut Street Phone Web Bid Package Addendum No.1 Date of Posting: 10/11/2016 Project: Multi-Institutional Academic Health Science and Research Center Description: See attached PCIS Project Addendum Number 2 for the project as a whole.

2 ADDENDUM NUMBER 2 Date: Oct. 7, 2016 Project: Owner: Multi-Institutional Academic Health Science & Research Center 515 Walnut Street Evansville HealthRealty, LLC 5000 Meridian Blvd., Suite 100 Franklin, TN This Addendum No. 2 amends the original Drawings and Project Manual released for bids dated July 8, 2016 for the project referenced above. Receipt of this Addendum and any subsequent Addenda must be acknowledged on the Bid Proposal Form. This Addendum contains two (2) items with multiple attachments. Item: Description: PROJECT MANUAL 1-1 The following specification sections have been removed from the document database and should be discarded: 1.) SECTION EXPANSION FITTINGS AND LOOPS FOR HVAC PIPING 2.) SECTION GENERAL-DUTY VALVES FOR HVAC PIPING 3.) SECTION PLUG VALVES FOR HVAC PIPING 4.) SECTION REFRIGERANT PIPING 5.) SECTION AIR DUCT ACCESSORIES 6.) SECTION DIFFUSERS, REGISTERS, AND GRILLES 7.) SECTION FUEL-FIRED UNIT HEATERS 8.) SECTION SCROLL WATER CHILLERS 9.) SECTION CUSTOM OUTDOOR AIR-HANDLING UNITS 10.) SECTION PACKAGED, OUTDOOR, CENTRAL-STATION AIR- HANDLING UNITS 11.) SECTION SPLIT-SYSTEM AIR-CONDITIONERS 12.) SECTION UNIT HEATERS 13.) SECTION HUMIDIFIERS 1-2 The following specification sections have been added to the document database and are contained herein: 1.) COMMISSIONING OF HVAC 2.) HYDRONIC PIPING SPECIALTIES 3.) HYDRONIC PUMPS 4.) AIR DUCT ACCESSORIES 5.) AIR TERMINAL UNITS 6.) AIR DIFFUSERS 7.) AIR REGISTERS AND GRILLES Page 1

3 8.) CONDENSING BOILERS 9.) WATER-COOLED, SCROLL WATER CHILLERS 10.) MODULAR INDOOR CENTRAL-STATION AIR-HANDLING UNITS 11.) FAN COIL UNITS Page 2

4 SECTION COMMISSIONING OF HVAC PART 1 - GENERAL 1.1 SECTION INCLUDES A. Description B. Responsibilities C. Related Work D. Test Equipment 1.2 DESCRIPTION A. The purpose of this section is to specify Division 23 responsibilities in the commissioning process. B. The systems to be commissioned are listed in the Commissioning Plan (Cx Plan). Refer to specification section C. Commissioning requires the participation of Division 23 to ensure that all systems are operating in a manner consistent with the Contract Documents. The general commissioning requirements and coordination are detailed in Section Division 23 Contractor shall be familiar with all parts of Section and the commissioning plan issued by the CxA, and shall execute all commissioning responsibilities assigned to them in the Contract Documents. 1.3 RESPONSIBILITIES A. Refer to the Cx Plan in the appendix of specification section RELATED WORK A. Specific commissioning requirements are given in the following sections of these specifications. All of the following sections apply to the Work of this section. 1. Commissioning Plan (Cx Plan) 2. Section Operations and Maintenance 3. Section Demonstration and Training COMMISSIONING OF HVAC

5 4. Section Commissioning 5. Section Commissioning of Fire Suppression 6. Section Commissioning of Plumbing 7. Section Commissioning of HVAC 8. Section Commissioning of Electrical 9. Section Direct Digital Controls (DDC) System for HVAC 10. Section Condensing Boilers 11. Section Water-cooled, scroll water chillers 12. Section Water-cooled, Rotary-screw water chillers 13. Section Cooling Towers 14. Section Modular Indoor Central-Station Air-Handling Units PART 2 - PRODUCTS 2.1 TEST EQUIPMENT A. The Contractor shall provide all test equipment necessary to fulfill the testing requirements of this Division. This equipment includes, but is not limited to, the following: 1. Handheld temperature and relative humidity meter. 2. Infrared thermometer gun. 3. Analog differential pressure gauge and associated tubing. 4. Portable computer with access to the Building Automation System. B. All testing equipment shall be of sufficient quality and accuracy to test and/or measure system performance with the tolerances specified in the related specifications. If not otherwise noted, the following minimum requirements apply: 1. Temperature sensors and digital thermometers shall have a certified calibration within the past year to an accuracy of 0.5F and a resolution of +/- 0.1F. COMMISSIONING OF HVAC

6 2. Pressure sensors shall have an accuracy of +/- 2.0% of the value range being measured (not full range of meter) and have been calibrated within the last year. 3. All equipment shall be calibrated according to the manufacturer s recommended intervals and when dropped or damaged. Calibration tags shall be affixed or certificates readily available. C. Refer to Section for additional Division 23 requirements. PART 3 - EXECUTION A. Refer to the Cx Plan in the appendix of specification section END OF SECTION COMMISSIONING OF HVAC

7 SECTION HYDRONIC PIPING SPECIALTIES 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 special-duty valves and specialties for the following: 1. Hot-water heating piping. 2. Chilled-water piping. 3. Condenser-water piping. 4. Makeup-water piping. 5. Blowdown-drain piping. 6. Air-vent piping. 7. Safety-valve-inlet and -outlet piping. 1.3 ACTION SUBMITTALS A. Product Data: For each type of the following: 1. Valves: Include flow and pressure drop curves based on manufacturer's testing for calibrated-orifice balancing valves and automatic flow-control valves. 2. Air-control devices. 3. Hydronic specialties. 1.4 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For air-control devices, hydronic specialties, and special-duty valves to include in emergency, operation, and maintenance manuals. 1.5 QUALITY ASSURANCE A. Pipe Welding: Qualify procedures and operators according to ASME Boiler and Pressure Vessel Code: Section IX. HYDRONIC PIPING SPECIALTIES

8 1. Safety valves and pressure vessels shall bear the appropriate ASME label. Fabricate and stamp air separators and expansion tanks to comply with ASME Boiler and Pressure Vessel Code: Section VIII, Division 1. PART 2 - PRODUCTS 2.1 AIR-CONTROL DEVICES A. Manual Air Vents: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Bell & Gossett Domestic Pump. 2. Body: Bronze. 3. Internal Parts: Nonferrous. 4. Operator: Screwdriver or thumbscrew. 5. Inlet Connection: NPS 1/2 (DN 15). 6. Discharge Connection: NPS 1/8 (DN 6). 7. CWP Rating: 150 psig (1035 kpa). 8. Maximum Operating Temperature: 225 deg F (107 deg C). B. Automatic Air Vents: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Bell & Gossett Domestic Pump. 2. Body: Bronze or cast iron. 3. Internal Parts: Nonferrous. 4. Operator: Noncorrosive metal float. 5. Inlet Connection: NPS 1/2 (DN 15). 6. Discharge Connection: NPS 1/4 (DN 8). 7. CWP Rating: 150 psig (1035 kpa). 8. Maximum Operating Temperature: 240 deg F (116 deg C). C. Bladder-Type Expansion Tanks: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Bell & Gossett Domestic Pump. HYDRONIC PIPING SPECIALTIES

9 2. Tank: Welded steel, rated for 125-psig (860-kPa) working pressure and 375 deg F (191 deg C) maximum operating temperature. Factory test after taps are fabricated and supports installed and are labeled according to ASME Boiler and Pressure Vessel Code: Section VIII, Division Bladder: Securely sealed into tank to separate air charge from system water to maintain required expansion capacity. 4. Air-Charge Fittings: Schrader valve, stainless steel with EPDM seats. D. Tangential-Type Air Separators: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Bell & Gossett Domestic Pump. 2. Tank: Welded steel; ASME constructed and labeled for 125-psig (860-kPa) minimum working pressure and 375 deg F (191 deg C) maximum operating temperature. 3. Air Collector Tube: Perforated stainless steel, constructed to direct released air into expansion tank. 4. Tangential Inlet and Outlet Connections: Threaded for NPS 2 (DN 50) and smaller; flanged connections for NPS 2-1/2 (DN 65) and larger. 5. Blowdown Connection: Threaded. 6. Size: Match system flow capacity. 2.2 HYDRONIC PIPING SPECIALTIES A. Y-Pattern Strainers: 1. Body: ASTM A 126, Class B, cast iron with bolted cover and bottom drain connection. 2. End Connections: Threaded ends for NPS 2 (DN 50) and smaller; flanged ends for NPS 2-1/2 (DN 65) and larger. 3. Strainer Screen: Stainless-steel, 60-mesh strainer, or perforated stainless-steel basket. 4. CWP Rating: 125 psig (860 kpa). PART 3 - EXECUTION 3.1 VALVE APPLICATIONS A. Install shutoff-duty valves at each branch connection to supply mains and at supply connection to each piece of equipment. B. Install check valves at each pump discharge and elsewhere as required to control flow direction. HYDRONIC PIPING SPECIALTIES

10 C. Install safety valves at hot-water generators and elsewhere as required by ASME Boiler and Pressure Vessel Code. Install drip-pan elbow on safety-valve outlet and pipe without valves to the outdoors; pipe drain to nearest floor drain or as indicated on Drawings. Comply with ASME Boiler and Pressure Vessel Code: Section VIII, Division 1, for installation requirements. D. Install pressure-reducing valves at makeup-water connection to regulate system fill pressure. 3.2 HYDRONIC SPECIALTIES INSTALLATION A. Install manual air vents at high points in piping, at heat-transfer coils, and elsewhere as required for system air venting. B. Install automatic air vents at high points of system piping in mechanical equipment rooms only. Install manual vents at heat-transfer coils and elsewhere as required for air venting. C. Install piping from boiler air outlet, air separator, or air purger to expansion tank with a 2 percent upward slope toward tank. D. Install tangential air separator in pump suction. Install blowdown piping with gate or full-port ball valve; extend full size to nearest floor drain. E. Install expansion tanks on the floor. Vent and purge air from hydronic system, and ensure that tank is properly charged with air to suit system Project requirements. END OF SECTION HYDRONIC PIPING SPECIALTIES

11 SECTION HYDRONIC PUMPS 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. Close-coupled, in-line centrifugal pumps. 1.3 DEFINITIONS A. Buna-N: Nitrile rubber. B. EPT: Ethylene propylene terpolymer. 1.4 ACTION SUBMITTALS A. Product Data: For each type of pump. Include certified performance curves and rated capacities, operating characteristics, furnished specialties, final impeller dimensions, and accessories for each type of product indicated. Indicate pump's operating point on curves. B. Shop Drawings: For each pump. 1. Show pump layout and connections. 2. Include setting drawings with templates for installing foundation and anchor bolts and other anchorages. 3. Include diagrams for power, signal, and control wiring. 1.5 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For pumps to include in emergency, operation, and maintenance manuals. HYDRONIC PUMPS

12 PART 2 - PRODUCTS 2.1 CLOSE-COUPLED, IN-LINE CENTRIFUGAL PUMPS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. ITT Corporation; Bell & Gossett. B. Description: Factory-assembled and -tested, centrifugal, overhung-impeller, close-coupled, in-line pump as defined in HI and HI 1.3; designed for installation with pump and motor shafts mounted horizontally or vertically. C. Pump Construction: 1. Casing: Cast iron, with threaded gage tappings at inlet and outlet. 2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft, and secured with a locking cap screw. For constant-speed pumps, trim impeller to match specified performance. 3. Pump Shaft: Stainless steel. 4. Seal: Packing seal consisting of stuffing box with a minimum of four rings of graphite-impregnated braided yarn with bronze lantern ring between center two graphite rings, and bronze packing gland. 5. Pump Bearings: Permanently lubricated ball bearings. D. Motor: Single speed and rigidly mounted to pump casing. 1. 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. Comply with NEMA designation, temperature rating, service factor, and efficiency requirements for motors specified in Section "Common Motor Requirements for HVAC Equipment." a. Enclosure: Open, dripproof. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine equipment foundations and anchor-bolt locations for compliance with requirements for installation tolerances and other conditions affecting performance of the Work. B. Examine roughing-in for piping systems to verify actual locations of piping connections before pump installation. HYDRONIC PUMPS

13 C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PUMP INSTALLATION A. Comply with HI 1.4. B. Install pumps to provide access for periodic maintenance including removing motors, impellers, couplings, and accessories. C. Independently support pumps and piping so weight of piping is not supported by pumps and weight of pumps is not supported by piping. D. Equipment Mounting: 1. Comply with requirements for vibration isolation and seismic control devices specified in Section "Vibration and Seismic Controls for HVAC." E. Equipment Mounting: Install in-line pumps with continuous-thread hanger rods and elastomeric hangers of size required to support weight of in-line pumps. 1. Comply with requirements for seismic-restraint devices specified in Section "Vibration and Seismic Controls for HVAC." 2. Comply with requirements for hangers and supports specified in Section "Hangers and Supports for HVAC Piping and Equipment." 3.3 ALIGNMENT A. Perform alignment service. 3.4 CONNECTIONS A. Where installing piping adjacent to pump, allow space for service and maintenance. B. Connect piping to pumps. Install valves that are same size as piping connected to pumps. C. Install suction and discharge pipe sizes equal to or greater than diameter of pump nozzles. D. Install check valve and shutoff valve on discharge side of pumps. E. Install Y-type strainer and shutoff valve on suction side of pumps. HYDRONIC PUMPS

14 F. Install pressure gages on pump suction and discharge or at integral pressure-gage tapping, or install single gage with multiple-input selector valve. G. Ground equipment according to Section "Grounding and Bonding for Electrical Systems." H. Connect wiring according to Section "Low-Voltage Electrical Power Conductors and Cables." 3.5 STARTUP SERVICE A. Perform startup service. 1. Complete installation and startup checks according to manufacturer's written instructions. 2. Check piping connections for tightness. 3. Clean strainers on suction piping. 4. Perform the following startup checks for each pump before starting: a. Verify bearing lubrication. b. Verify that pump is free to rotate by hand and that pump for handling hot liquid is free to rotate with pump hot and cold. If pump is bound or drags, do not operate until cause of trouble is determined and corrected. c. Verify that pump is rotating in the correct direction. 5. Prime pump by opening suction valves and closing drains, and prepare pump for operation. 6. Start motor. 7. Open discharge valve slowly. 3.6 DEMONSTRATION A. Train Owner's maintenance personnel to adjust, operate, and maintain hydronic pumps. END OF SECTION HYDRONIC PUMPS

15 SECTION AIR DUCT ACCESSORIES 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. Manual volume dampers. 2. Control dampers. 3. Fire dampers. 4. Combination fire and smoke dampers. 5. Turning vanes. 6. Duct-mounted access doors. 7. Flexible connectors. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product. PART 2 - PRODUCTS 2.1 ASSEMBLY DESCRIPTION A. Comply with NFPA 90A, "Installation of Air Conditioning and Ventilating Systems," and with NFPA 90B, "Installation of Warm Air Heating and Air Conditioning Systems." B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods unless otherwise indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains, discolorations, and other imperfections. AIR DUCT ACCESSORIES

16 2.2 MATERIALS A. Galvanized Sheet Steel: Comply with ASTM A 653/A 653M. 1. Galvanized Coating Designation: G Exposed-Surface Finish: Mill phosphatized. B. Stainless-Steel Sheets: Comply with ASTM A 480/A 480M, Type 304, and having a No. 2 finish. C. Aluminum Sheets: Comply with ASTM B 209, Alloy 3003, Temper H14; with mill finish for concealed ducts and standard, 1-side bright finish for exposed ducts. D. Extruded Aluminum: Comply with ASTM B 221, Alloy 6063, Temper T6. E. Reinforcement Shapes and Plates: Galvanized-steel reinforcement where installed on galvanized sheet metal ducts; compatible materials for aluminum and stainless-steel ducts. F. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for lengths 36 inches or less; 3/8-inch minimum diameter for lengths longer than 36 inches. 2.3 MANUAL VOLUME DAMPERS A. Standard, Steel, Manual Volume Dampers: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Ruskin Company. 2. Standard leakage rating[, with linkage outside airstream]. 3. Suitable for horizontal or vertical applications. 4. Frames: a. Frame: Hat-shaped, inch- thick, galvanized sheet steel. b. Mitered and welded corners. c. Flanges for attaching to walls and flangeless frames for installing in ducts. 5. Blades: a. Multiple or single blade. b. Parallel- or opposed-blade design. c. Galvanized -steel, inch thick. 6. Blade Axles: Galvanized steel. AIR DUCT ACCESSORIES

17 7. Bearings: a. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full length of damper blades and bearings at both ends of operating shaft. 8. Tie Bars and Brackets: Galvanized steel. B. Standard, Aluminum, Manual Volume Dampers: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Ruskin Company. 2. Standard leakage rating, with linkage outside airstream. 3. Suitable for horizontal or vertical applications. 4. Frames: Hat-shaped, 0.10-inch- thick, aluminum sheet channels; frames with flanges for attaching to walls and flangeless frames for installing in ducts. 5. Blades: a. Multiple or single blade. b. Parallel- or opposed-blade design. c. Stiffen damper blades for stability. d. Roll-Formed Aluminum Blades: 0.10-inch- thick aluminum sheet. 6. Blade Axles: Nonferrous metal. 7. Bearings: a. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full length of damper blades and bearings at both ends of operating shaft. 8. Tie Bars and Brackets: Aluminum. 2.4 FIRE DAMPERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Ruskin Company. B. Type: Static and dynamic; rated and labeled according to UL 555 by an NRTL. C. Closing rating in ducts up to 4-inch wg static pressure class and minimum 2000-fpm velocity. AIR DUCT ACCESSORIES

18 D. Frame: Curtain type with blades outside airstream; fabricated with roll-formed, inch- thick galvanized steel; with mitered and interlocking corners. E. Mounting Sleeve: Factory- or field-installed, galvanized sheet steel. 1. Minimum Thickness: inch thick, as indicated, and of length to suit application. 2. Exception: Omit sleeve where damper-frame width permits direct attachment of perimeter mounting angles on each side of wall or floor; thickness of damper frame must comply with sleeve requirements. F. Mounting Orientation: Vertical or horizontal as indicated. G. Blades: Roll-formed, interlocking, inch- thick, galvanized sheet steel. In place of interlocking blades, use full-length, inch- thick, galvanized-steel blade connectors. H. Heat-Responsive Device: Replaceable, fusible links. 2.5 COMBINATION FIRE AND SMOKE DAMPERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Ruskin Company. B. Type: Dynamic; rated and labeled according to UL 555 and UL 555S by an NRTL. C. Closing rating in ducts up to 4-inch wg static pressure class and minimum 3000-fpm velocity. D. Fire Rating: 1-1/2 and 3 hours. E. Frame: Hat-shaped, inch- thick, galvanized sheet steel, with welded interlocking, gusseted or mechanically attached corners and mounting flange. F. Blades: Roll-formed, horizontal, interlocking, inch- thick, galvanized sheet steel. G. Leakage: Class II. H. Rated pressure and velocity to exceed design airflow conditions. I. Mounting Sleeve: Factory-installed, 0.05-inch- thick, galvanized sheet steel; length to suit wall or floor application with factory-furnished silicone calking. J. Damper Motors: two-position action. AIR DUCT ACCESSORIES

19 K. Accessories: 1. Auxiliary switches for position indication. 2. Test and reset switches, damper mounted. 2.6 TURNING VANES A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. SEMCO LLC. B. Manufactured Turning Vanes for Metal Ducts: Curved blades of galvanized sheet steel; support with bars perpendicular to blades set; set into vane runners suitable for duct mounting. C. General Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible"; Figures 4-3, "Vanes and Vane Runners," and 4-4, "Vane Support in Elbows." D. Vane Construction: Single wall for ducts up to 48 inches wide and double wall for larger dimensions. 2.7 DUCT-MOUNTED ACCESS DOORS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Nailor Industries Inc. B. Duct-Mounted Access Doors: Fabricate access panels according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible"; Figures 7-2, "Duct Access Doors and Panels," and 7-3, "Access Doors - Round Duct." 1. Door: a. Double wall, rectangular. b. Galvanized sheet metal with insulation fill and thickness as indicated for duct pressure class. c. Vision panel. d. Hinges and Latches: 1-by-1-inch butt or piano hinge and cam latches. e. Fabricate doors airtight and suitable for duct pressure class. 2. Frame: Galvanized sheet steel, with bend-over tabs and foam gaskets. 3. Number of Hinges and Locks: AIR DUCT ACCESSORIES

20 a. Access Doors Less Than 12 Inches Square: No hinges and two sash locks. b. Access Doors up to 18 Inches Square: Continuous and two sash locks. c. Access Doors up to 24 by 48 Inches : Continuous and two compression latches. d. Access Doors Larger Than 24 by 48 Inches : Continuous and two compression latches with outside and inside handles. 2.8 FLEXIBLE CONNECTORS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Ductmate Industries, Inc. B. Materials: Flame-retardant or noncombustible fabrics. C. Coatings and Adhesives: Comply with UL 181, Class 1. D. Metal-Edged Connectors: Factory fabricated with a fabric strip 5-3/4 inches wide attached to two strips of 2-3/4-inch- wide, inch- thick, galvanized sheet steel or inch- thick aluminum sheets. Provide metal compatible with connected ducts. E. Indoor System, Flexible Connector Fabric: Glass fabric double coated with neoprene. 1. Minimum Weight: 26 oz./sq. yd.. 2. Tensile Strength: 480 lbf/inch in the warp and 360 lbf/inch in the filling. 3. Service Temperature: Minus 40 to plus 200 deg F. F. Outdoor System, Flexible Connector Fabric: Glass fabric double coated with weatherproof, synthetic rubber resistant to UV rays and ozone. 1. Minimum Weight: 24 oz./sq. yd.. 2. Tensile Strength: 530 lbf/inch in the warp and 440 lbf/inch in the filling. 3. Service Temperature: Minus 50 to plus 250 deg F. AIR DUCT ACCESSORIES

21 PART 3 - EXECUTION 3.1 INSTALLATION A. Install duct accessories according to applicable details in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for metal ducts and in NAIMA AH116, "Fibrous Glass Duct Construction Standards," for fibrous-glass ducts. B. Install duct accessories of materials suited to duct materials; use galvanized-steel accessories in galvanized-steel and fibrous-glass ducts, stainless-steel accessories in stainless-steel ducts, and aluminum accessories in aluminum ducts. C. Compliance with ASHRAE/IESNA includes Section "Shutoff Damper Controls," restricts the use of backdraft dampers, and requires control dampers for certain applications. Install controldampers at inlet of exhaust fans or exhaust ducts as close as possible to exhaust fan unless otherwise indicated. D. Install volume dampers at points on supply, return, and exhaust systems where branches extend from larger ducts. Where dampers are installed in ducts having duct liner, install dampers with hat channels of same depth as liner, and terminate liner with nosing at hat channel. 1. Install steel volume dampers in steel ducts. 2. Install aluminum volume dampers in aluminum ducts. E. Set dampers to fully open position before testing, adjusting, and balancing. F. Install test holes at fan inlets and outlets and elsewhere as indicated. G. Install fire and smoke dampers according to UL listing. H. Install duct security bars. Construct duct security bars from inch steel sleeve, continuously welded at all joints and 1/2-inch- diameter steel bars, 6 inches o.c. in each direction in center of sleeve. Weld each bar to steel sleeve and each crossing bar. Weld 2-1/2-by-2-1/2-by-1/4-inch steel angle to 4 sides and both ends of sleeve. Connect duct security bars to ducts with flexible connections. Provide 12-by-12-inch hinged access panel with cam lock in duct in each side of sleeve. I. Install duct access doors on sides of ducts to allow for inspecting, adjusting, and maintaining accessories and equipment at the following locations: 1. On both sides of duct coils. 2. At outdoor-air intakes and mixed-air plenums. 3. At drain pans and seals. AIR DUCT ACCESSORIES

22 4. Adjacent to and close enough to fire or smoke dampers, to reset or reinstall fusible links. Access doors for access to fire or smoke dampers having fusible links shall be pressure relief access doors and shall be outward operation for access doors installed upstream from dampers and inward operation for access doors installed downstream from dampers. 5. Elsewhere as indicated. J. Label access doors according to Section "Identification for HVAC Piping and Equipment" to indicate the purpose of access door. K. Install flexible connectors to connect ducts to equipment. L. For fans developing static pressures of 5-inch wg and more, cover flexible connectors with loaded vinyl sheet held in place with metal straps. M. Connect diffusers to ducts with maximum 60-inch lengths of flexible duct clamped and taped or strapped in place. N. Connect flexible ducts to metal ducts with adhesive plus sheet metal screws. O. Install duct test holes where required for testing and balancing purposes. P. Install thrust limits at centerline of thrust, symmetrical on both sides of equipment. Attach thrust limits at centerline of thrust and adjust to a maximum of 1/4-inch movement during start and stop of fans. 3.2 FIELD QUALITY CONTROL A. Tests and Inspections: 1. Operate dampers to verify full range of movement. 2. Inspect locations of access doors and verify that purpose of access door can be performed. 3. Operate fire, smoke, and combination fire and smoke dampers to verify full range of movement and verify that proper heat-response device is installed. 4. Inspect turning vanes for proper and secure installation. 5. Operate remote damper operators to verify full range of movement of operator and damper. END OF SECTION AIR DUCT ACCESSORIES

23 SECTION AIR TERMINAL UNITS 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. Shutoff, single-duct air terminal units. 1.3 ACTION SUBMITTALS A. Product Data: For each type of air terminal unit. 1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for air terminal units. 2. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories. B. Shop Drawings: For air terminal units. 1. Include details of equipment assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. 2. Include diagrams for power, signal, and control wiring. 3. Hangers and supports, including methods for duct and building attachment, seismic restraints, and vibration isolation. 1.4 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For air terminal units to include in emergency, operation, and maintenance manuals. AIR TERMINAL UNITS

24 PART 2 - PRODUCTS 2.1 SYSTEM DESCRIPTION A. 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. B. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 5 - "Systems and Equipment" and Section 7 - "Construction and System Start-up." C. ASHRAE Compliance: Applicable requirements in ASHRAE/IES 90.1, "Section 6 - Heating, Ventilating, and Air Conditioning." 2.2 SHUTOFF, SINGLE-DUCT AIR TERMINAL UNITS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Price Industries. B. Configuration: Volume-damper assembly inside unit casing with control components inside a protective metal shroud. C. Casing: 22 gauge galvanized steel, single wall. 1. Air Inlet: Round stub connection. 2. Air Outlet: S-slip and drive connections. 3. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in ASHRAE D. Volume Damper: Galvanized steel with peripheral gasket and self-lubricating bearings. E. Hydronic Heating Coils: Copper tube, with mechanically bonded aluminum fins spaced no closer than 0.1 inch, and rated for a minimum working pressure of 200 psig and a maximum entering-water temperature of 220 deg F. Include manual air vent and drain valve. F. See Plans for further requirements. AIR TERMINAL UNITS

25 PART 3 - EXECUTION 3.1 HANGER AND SUPPORT INSTALLATION A. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Ch. 5, "Hangers and Supports" and with Section "Hangers and Supports for HVAC Piping and Equipment." B. Building Attachments: Concrete inserts, powder-actuated fasteners, or structural-steel fasteners appropriate for construction materials to which hangers are being attached. 1. Where practical, install concrete inserts before placing concrete. 2. Install powder-actuated concrete fasteners after concrete is placed and completely cured. 3. Use powder-actuated concrete fasteners for standard-weight aggregate concretes and for slabs more than 4 inches thick. 4. Do not use powder-actuated concrete fasteners for lightweight-aggregate concretes and for slabs less than 4 inches thick. 5. Do not use powder-actuated concrete fasteners for seismic restraints. C. Hangers Exposed to View: Threaded rod and angle or channel supports. D. Install upper attachments to structures. Select and size upper attachments with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used. 3.2 SEISMIC-RESTRAINT-DEVICE INSTALLATION A. Install hangers and braces designed to support the air terminal units and to restrain against seismic forces required by applicable building codes. Comply with requirements for seismic-restraint devices in Section "Vibration and Seismic Controls for HVAC." B. Select seismic-restraint devices with capacities adequate to carry present and future static and seismic loads. C. Install cables so they do not bend across edges of adjacent equipment or building structure. D. Install cable restraints on air terminal units that are suspended with vibration isolators. E. Install seismic-restraint devices using methods approved by an agency acceptable to authorities having jurisdiction. AIR TERMINAL UNITS

26 F. Attachment to Structure: If specific attachment is not indicated, anchor bracing and restraints to structure, to flanges of beams, to upper truss chords of bar joists, or to concrete members. G. Drilling for and Setting Anchors: 1. Identify position of reinforcing steel and other embedded items before drilling holes for anchors. Do not damage existing reinforcement or embedded items during drilling. Notify Architect if reinforcing steel or other embedded items are encountered during drilling. Locate and avoid prestressed tendons, electrical and telecommunications conduit, and gas lines. 2. Do not drill holes in concrete or masonry until concrete, mortar, or grout has achieved full design strength. 3. Wedge Anchors: Protect threads from damage during anchor installation. Install heavy-duty sleeve anchors with sleeve fully engaged in the structural element to which anchor is to be fastened. 4. Set anchors to manufacturer's recommended torque, using a torque wrench. 5. Install zinc-coated steel anchors for interior applications and stainless-steel anchors for applications exposed to weather. 3.3 TERMINAL UNIT INSTALLATION A. Install air terminal units according to NFPA 90A, "Standard for the Installation of Air Conditioning and Ventilating Systems." B. Install air terminal units level and plumb. Maintain sufficient clearance for normal service and maintenance. 3.4 CONNECTIONS A. Where installing piping adjacent to air terminal unit, allow space for service and maintenance. B. Comply with requirements in Section "Metal Ducts" for connecting ducts to air terminal units. C. Make connections to air terminal units with flexible connectors complying with requirements in Section "Air Duct Accessories." 3.5 IDENTIFICATION A. Label each air terminal unit with plan number, nominal airflow, and maximum and minimum factory-set airflows. Comply with requirements in Section "Identification for HVAC Piping and Equipment" for equipment labels and warning signs and labels. AIR TERMINAL UNITS

27 3.6 FIELD QUALITY CONTROL A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect components, assemblies, and equipment installations, including connections. B. Perform the following tests and inspections: 1. After installing air terminal units and after electrical circuitry has been energized, test for compliance with requirements. 2. Leak Test: After installation, fill water coils and test for leaks. Repair leaks and retest until no leaks exist. 3. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation. 4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. C. Air terminal unit will be considered defective if it does not pass tests and inspections. D. Prepare test and inspection reports. 3.7 STARTUP SERVICE A. Perform startup service. 1. Complete installation and startup checks according to manufacturer's written instructions. 2. Verify that inlet duct connections are as recommended by air terminal unit manufacturer to achieve proper performance. 3. Verify that controls and control enclosure are accessible. 4. Verify that control connections are complete. 5. Verify that nameplate and identification tag are visible. 6. Verify that controls respond to inputs as specified. 3.8 DEMONSTRATION A. Train Owner's maintenance personnel to adjust, operate, and maintain air terminal units. END OF SECTION AIR TERMINAL UNITS

28 SECTION AIR DIFFUSERS 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. Ceiling diffusers. 2. Louver face diffusers. B. Related Requirements: 1. Section "Air Registers and Grilles" for adjustable-bar register and grilles, fixed-face registers and grilles, and linear bar grilles. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Data Sheet: Indicate materials of construction, finish, and mounting details; and performance data including throw and drop, static-pressure drop, and noise ratings. 2. Diffuser Schedule: Indicate drawing designation, room location, quantity, model number, size, and accessories furnished. PART 2 - PRODUCTS 2.1 CEILING DIFFUSERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Price Industries. B. See plans for further requirements. AIR DIFFUSERS

29 2.2 LOUVER FACE DIFFUSERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Price Industries. B. See plans for further requirements. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas where diffusers are installed for compliance with requirements for installation tolerances and other conditions affecting performance of equipment. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. Install diffusers level and plumb. B. Outlets and Inlets Locations: Drawings indicate general arrangement of ducts, fittings, and accessories. Air outlet and inlet locations have been indicated to achieve design requirements for air volume, noise criteria, airflow pattern, throw, and pressure drop. Make final locations where indicated, as much as practical. For units installed in lay-in ceiling panels, locate units in the center of panel. Where architectural features or other items conflict with installation, notify Architect for a determination of final location. C. Install diffusers with airtight connections to ducts and to allow service and maintenance of dampers, air extractors, and fire dampers. 3.3 ADJUSTING A. After installation, adjust diffusers to air patterns indicated, or as directed, before starting air balancing. END OF SECTION AIR DIFFUSERS

30 SECTION AIR REGISTERS AND GRILLES 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. Fixed face grilles. B. Related Requirements: 1. Section "Air Diffusers" for various types of air diffusers. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Data Sheet: Indicate materials of construction, finish, and mounting details; and performance data including throw and drop, static-pressure drop, and noise ratings. 2. Register and Grille Schedule: Indicate drawing designation, room location, quantity, model number, size, and accessories furnished. PART 2 - PRODUCTS 2.1 GRILLES A. Fixed Face Grille : 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Price Industries. 2. See plans for further requirements. AIR REGISTERS AND GRILLES

31 PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas where registers and grilles are installed for compliance with requirements for installation tolerances and other conditions affecting performance of equipment. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. Install registers and grilles level and plumb. B. Outlets and Inlets Locations: Drawings indicate general arrangement of ducts, fittings, and accessories. Air outlet and inlet locations have been indicated to achieve design requirements for air volume, noise criteria, airflow pattern, throw, and pressure drop. Make final locations where indicated, as much as practical. For units installed in lay-in ceiling panels, locate units in the center of panel. Where architectural features or other items conflict with installation, notify Architect for a determination of final location. C. Install registers and grilles with airtight connections to ducts and to allow service and maintenance of dampers, air extractors, and fire dampers. 3.3 ADJUSTING A. After installation, adjust registers and grilles to air patterns indicated, or as directed, before starting air balancing. END OF SECTION AIR REGISTERS AND GRILLES

32 SECTION CONDENSING BOILERS 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. B. This section specifies a system or component of a system commissioned as defined in Section Commissioning. Testing of these systems is required, in cooperation with the Owner and the Commissioning Authority. Refer to Section Commissioning for detailed commissioning requirements. 1.2 SUMMARY A. Section includes gas-fired, condensing boilers, trim, and accessories for generating hot water. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for boilers. 2. Include rated capacities, operating characteristics, and furnished specialties and accessories. B. Sustainable Design Submittals: 1. Product Data: For energy performance. C. Shop Drawings: For boilers, boiler trim, and accessories. 1. Include plans, elevations, sections, and [mounting] [attachment] details. 2. Include details of equipment assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. 3. Include diagrams for power, signal, and control wiring. CONDENSING BOILERS

33 1.4 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For boilers to include in emergency, operation, and maintenance manuals. 1.5 WARRANTY A. Manufacturer's Warranty: Manufacturer agrees to repair or replace components of boilers that fail in materials or workmanship within specified warranty period. 1. Warranty Period for Boilers: a. Heat Exchanger Damaged by Thermal Shock: 10 years from date of Substantial Completion. b. Heat-Exchanger Corrosion: five years from date of Substantial Completion. 2. Extended warranties include, but are not limited to, the following: a. Complete boiler. b. Parts and labor. 3. Warranty Period: Three years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. 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. B. ASME Compliance: Fabricate and label boilers to comply with 2010 ASME Boiler and Pressure Vessel Code. C. ASHRAE/IES 90.1 Compliance: Boilers shall have minimum efficiency according to "Gas and Oil Fired Boilers - Minimum Efficiency Requirements." D. DOE Compliance: Minimum efficiency shall comply with 10 CFR 430, Subpart B, Appendix N. E. UL Compliance: Test boilers for compliance with UL 795. Boilers shall be listed and labeled by a testing agency acceptable to authorities having jurisdiction. CONDENSING BOILERS

34 2.2 CONDENSING BOILERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Hydrotherm, Inc./Mestek, Inc. B. Description: Factory-fabricated, -assembled, and -tested, condensing boiler with heat exchanger sealed pressure tight, built on a steel base, including insulated jacket; flue-gas vent; combustion-air intake connections; water supply, return, and condensate drain connections; and controls. C. See Plans for further requirements. 2.3 SOURCE QUALITY CONTROL A. Burner and Hydrostatic Test: Factory adjust burner to eliminate excess oxygen, carbon dioxide, oxides of nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion efficiency; perform hydrostatic test. B. Test and inspect factory-assembled boilers, before shipping, according to 2010 ASME Boiler and Pressure Vessel Code. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine roughing-in for concrete equipment bases, anchor-bolt sizes and locations, and piping and electrical connections to verify actual locations, sizes, and other conditions affecting performance of the Work. 1. Final boiler locations indicated on Drawings are approximate. Determine exact locations before roughing-in for piping and electrical connections. B. Examine mechanical spaces for suitable conditions where boilers will be installed. C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 BOILER INSTALLATION A. Equipment Mounting: CONDENSING BOILERS

35 1. Comply with requirements for vibration isolation and seismic-restraint devices specified in Section "Vibration and Seismic Controls for HVAC." B. Install gas-fired boilers according to NFPA 54. C. Assemble and install boiler trim. D. Install electrical devices furnished with boiler but not specified to be factory mounted. E. Install control wiring to field-mounted electrical devices. 3.3 CONNECTIONS A. Piping installation requirements are specified in other Sections. Drawings indicate general arrangement of piping, fittings, and specialties. B. Install piping adjacent to boiler to allow service and maintenance. C. Install piping from equipment drain connection to nearest floor drain. Piping shall be at least full size of connection. Provide an isolation valve if required. D. Connect piping to boilers, except safety relief valve connections, with flexible connectors of materials suitable for service. Flexible connectors and their installation are specified in Section "Hydronic Piping Specialties." E. Connect gas piping to boiler gas-train inlet with union. Piping shall be at least full size of gas-train connection. Provide a reducer if required. F. Connect hot-water piping to supply- and return-boiler tappings with shutoff valve and union or flange at each connection. G. Install piping from safety relief valves to nearest floor drain. H. Boiler Venting: 1. Install flue venting kit and combustion-air intake. See Plans for further requirements. I. Ground equipment according to Section "Grounding and Bonding for Electrical Systems." J. Connect wiring according to Section "Low-Voltage Electrical Power Conductors and Cables." CONDENSING BOILERS

36 3.4 FIELD QUALITY CONTROL A. Major equipment and system startup and operational tests shall be scheduled and documented in accordance with Section Commissioning. B. Perform the following tests and inspections: 1. Perform installation and startup checks according to manufacturer's written instructions. 2. Leak Test: Hydrostatic test. Repair leaks and retest until no leaks exist. 3. Operational Test: Start units to confirm proper motor rotation and unit operation. Adjust air-fuel ratio and combustion. 4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. a. Check and adjust initial operating set points and high- and low-limit safety set points of fuel supply, water level, and water temperature. b. Set field-adjustable switches and circuit-breaker trip ranges as indicated. C. Boiler will be considered defective if it does not pass tests and inspections. D. Prepare test and inspection reports. 3.5 DEMONSTRATION A. Training of the owner's operation and maintenance personnel is required in cooperation with the Commissioning Authority. The instruction shall be scheduled in coordination with the Commissioning Authority after submission and approval of formal training plans. Refer to Demonstration and Training, Section , for contractor training requirements. Refer to Section and the Commissioning Plan for further requirements. END OF SECTION CONDENSING BOILERS