SECTION MINOR HVAC DEMOLITION

Transcription

1 PART1 GENERAL 1.01 SECTION INCLUDES A. HVAC demolition. 1. Exhaust Fans 2. Equipment 3. Ductwork 4. Piping 1.02 RELATED REQUIREMENTS SECTION MINOR HVAC DEMOLITION A. Additional requirements for alterations work. PART 2 PRODUCTS 2.01 MATERIALS AND EQUIPMENT A. Materials and equipment for patching and extending work: As specified in individual sections. PART 3 EXECUTION 3.01 EXAMINATION A. Verify field measurements and duct arrangements are as shown on Drawings. B. Verify that abandoned ductwork and equipment serve only abandoned facilities. C. Demolition drawings are based on casual field observation. D. Report discrepancies to Engineer before disturbing existing installation. E. Beginning of demolition means installer accepts existing conditions PREPARATION A. Disconnect HVAC systems in walls, floors, and ceilings to be removed DEMOLITION AND EXTENSION OF EXISTING HVAC WORK A. Remove, relocate, and extend existing installations to accommodate new construction. B. Remove abandoned ductwork to source of supply. C. Remove exposed abandoned ductwork, including abandoned ductwork above accessible ceiling finishes. Cut ductwork flush with walls and floors, and patch surfaces. D. Disconnect abandoned air outlets and inlets and remove. Remove abandoned air outlets and inlets if ductwork servicing them is abandoned and removed. Provide blank covers for abandoned air outlets and inlets that are not removed. E. Remove exhaust fans as noted. F. Remove piping as noted. G. Repair adjacent construction and finishes damaged during demolition and extension work. H. Maintain access to existing HVAC installations that remain active. Modify installation or provide access panel as appropriate. I. Extend existing installations using materials and methods as specified CLEANING AND REPAIR A. Clean and repair existing materials and equipment that remain or that are to be reused. END OF SECTION of 1 MINOR HVAC DEMOLITION

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3 PART1 GENERAL 1.01 SECTION INCLUDES A. Pressure gages and pressure gage taps. B. Thermometers and thermometer wells. C. Static pressure gages RELATED REQUIREMENTS 1.03 REFERENCE STANDARDS SECTION METERS AND GAGES FOR HVAC PIPING A. ASME B Pressure Gauges and Gauge Attachments; The American Society of Mechanical Engineers; B. ASTM E1 -Standard Specification for ASTM Liquid-in-Glass Thermometers; C. UL Indicating Pressure Gauges for Fire-Protection Service; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide list that indicates use, operating range, total range and location for manufactured components. C. Project Record Documents: Record actual locations of components and instrumentation FIELD CONDITIONS A. Do not install instrumentation when areas are under construction, except for required rough-in, taps, supports and test plugs. PART 2 PRODUCTS 2.01 PRESSURE GAGES A. Pressure Gages: ASME B , UL 393 drawn steel case, phosphor bronze bourdon tube, rotary brass movement, brass socket, with front recalibration adjustment, black scale on white background PRESSURE GAGE TAPPINGS A. Gage Cock: Tee or lever handle, brass for maximum 150 psi DIAL THERMOMETERS A. Thermometer: ASTM E1, stainless steel case, adjustable angle with front recalibration, bimetallic helix actuated with silicone fluid damping, white with black markings and black pointer hermetically sealed lens, stainless steel stem. 1. Size: 3 inch diameter dial. 2. Lens: Clear glass THERMOMETER SUPPORTS A. Socket: Brass separable sockets for thermometer stems with or without extensions as required, and with cap and chain TEST PLUGS A. Test Plug: 1/4 inch or 1/2 inch brass fitting and cap for receiving 1/8 inch outside diameter pressure or temperature probe with neoprene core for temperatures up to 200 degrees F STATIC PRESSURE GAGES A. 3-1/2 inch diameter dial in metal case, diaphragm actuated, black figures on white background, front recalibration adjustment, 2 percent of full scale accuracy of 2 METERS AND GAGES FOR HVAC PIPING

4 PART 3 EXECUTION 3.01 INSTALLATION A. Install in accordance with manufacturer's instructions. B. Install gages and thermometers in locations where they are easily read from normal operating level. Install vertical to 45 degrees off vertical. C. Adjust gages and thermometers to final angle, clean windows and lenses, and calibrate to zero. END OF SECTION of 2 METERS AND GAGES FOR HVAC PIPING

5 PART1 GENERAL 1.01 SECTION INCLUDES A. Nameplates. B. Tags. C. Pipe markers. D. Ceiling tacks RELATED REQUIREMENTS 1.03 REFERENCE STANDARDS SECTION IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT A. ASTM D709- Standard Specification for Laminated Thermosetting Materials; SUBMITTALS A. See Section Submittals, for submittal procedures. B. List: Submit list of wording, symbols, letter size, and color coding for mechanical identification. C. Chart and Schedule: Submit valve chart and schedule, including valve tag number, location, function, and valve manufacturer's name and model number. D. Product Data: Provide manufacturers catalog literature for each product required. E. Manufacturer's Installation Instructions: Indicate special procedures, and installation. F. Project Record Documents: Record actual locations of tagged valves. PART 2 PRODUCTS 2.01 IDENTIFICATION APPLICATIONS A. Air Handling Units: Nameplates. B. Control Panels: Nameplates. C. Major Control Components: Nameplates. D. Piping: Pipe markers. E. Pumps: Nameplates. F. Thermostats: Nameplates. G. Valves: Tags and ceiling tacks where located above lay-in ceiling. H. Water Treatment Devices: Nameplates NAMEPLATES A. Manufacturers: 1. Advanced Graphic Engraving, LLC: 2. Kolbi Pipe Marker Co.: 3. Seton Identification Products, a Tricor Direct Company: B. Letter Color: White. C. Letter Height: 1/4 inch. D. Background Color: Black. E. Plastic: Conform to ASTM D TAGS A. Manufacturers: 1. Advanced Graphic Engraving: 2. Brady Corporation: 3. Kolbi Pipe Marker Co.: of 2 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

6 4. Seton Identification Products, a Tricor Company: B. Plastic Tags: Laminated three-layer plastic with engraved black letters on light contrasting background color. Tag size minimum 1-1/2 inch diameter PIPE MARKERS A. Manufacturers: 1. Brady Corporation: 2. Kolbi Pipe Marker Co.: 3. MIFAB, Inc.: 4. Seton Identification Products, a Tricor Company: B. Plastic Pipe Markers: Factory fabricated, flexible, semi- rigid plastic, preformed to fit around pipe or pipe covering; minimum information indicating flow direction arrow and identification of fluid being conveyed. C. Plastic Tape Pipe Markers: Flexible, vinyl film tape with pressure sensitive adhesive backing and printed markings. D. Underground Plastic Pipe Markers: Bright colored continuously printed plastic ribbon tape, minimum 6 inches wide by 4 mil thick, manufactured for direct burial service CEILING TACKS A. Description: Steel with 3/4 inch diameter color coded head. PART 3 EXECUTION 3.01 PREPARATION A. Degrease and clean surfaces to receive adhesive for identification materials INSTALLATION A. Install nameplates with corrosive-resistant mechanical fasteners, or adhesive. Apply with sufficient adhesive to ensure permanent adhesion and seal with clear lacquer. B. Install tags with corrosion resistant chain. C. Install plastic pipe markers in accordance with manufacturer's instructions. D. Install plastic tape pipe markers complete around pipe in accordance with manufacturer's instructions. E. Install underground plastic pipe markers 6 to 8 inches below finished grade, directly above buried pipe. F. Use tags on piping 3/4 inch diameter and smaller. 1. Identify service, flow direction, and pressure. 2. Install in clear view and align with axis of piping. 3. Locate identification not to exceed 20 feet on straight runs including risers and drops, adjacent to each valve and Tee, at each side of penetration of structure or enclosure, and at each obstruction. END OF SECTION of 2 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

7 PART1 GENERAL 1.01 SECTION INCLUDES SECTION TESTING, ADJUSTING, AND BALANCING FOR HVAC A. Testing, adjustment, and balancing of air systems. B. Testing, adjustment, and balancing of hydronic and refrigerating systems. C. Measurement of final operating condition of HVAC systems RELATED REQUIREMENTS 1.03 REFERENCE STANDARDS A. AABC MN-1 - AABC National Standards for Total System Balance; Associated Air Balance Council; B. ASHRAE Std 111 -Measurement, Testing, Adjusting, and Balancing of Building HVAC Systems; American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.; C. NEBS (TAB)- Procedural Standard for Testing Adjusting and Balancing of Environmental Systems; National Environmental Balancing Bureau; 2005, Seventh Edition. D. SMACNA (TAB)- HVAC Systems Testing, Adjusting, and Balancing; Sheet Metal and Air Conditioning Contractors' National Association; SUBMITTALS A. See Section Submittals, for submittal procedures. B. TAB Plan: Submit a written plan indicating the testing, adjusting, and balancing standard to be followed and the specific approach for each system and component. 1. Submit to Engineer. 2. Submit six weeks prior to starting the testing, adjusting, and balancing work. 3. Include certification that the plan developer has reviewed the contract documents, the equipment and systems, and the control system with the Engineer and other installers to sufficiently understand the design intent for each system. 4. Include at least the following in the plan: a. List of all air flow, water flow, sound level, system capacity and efficiency measurements to be performed and a description of specific test procedures, parameters, formulas to be used. b. Copy of field checkout sheets and logs to be used, listing each piece of equipment to be tested, adjusted and balanced with the data cells to be gathered for each. c. Identification and types of measurement instruments to be used and their most recent calibration date. d. Discussion of what notations and markings will be made on the duct and piping drawings during the process. e. Final test report forms to be used. f. Expected problems and solutions, etc. g. Details of how TOTAL flow will be determined; for example: 1) Air: Sum of terminal flows via control system calibrated readings or via hood readings of all terminals, supply (SA) and return air (RA) pitot traverse, SA or RA flow stations. 2) Water: Pump curves, circuit setter, flow station, ultrasonic, etc. h. Confirmation of understanding of the outside air ventilation criteria under all conditions. i. Method of verifying and setting minimum outside air flow rate will be verified and set and for what level (total building, zone, etc.). j. Procedures for formal deficiency reports, including scope, frequency and distribution of 5 TESTING, ADJUSTING, AND BALANCING FOR HVAC

8 C. Final Report: Indicate deficiencies in systems that would prevent proper testing, adjusting, and balancing of systems and equipment to achieve specified performance. 1. Revise TAB plan to reflect actual procedures and submit as part of final report. 2. Submit draft copies of report for review prior to final acceptance of Project. Provide final copies for Engineer and for inclusion in operating and maintenance manuals. 3. Include actual instrument list, with manufacturer name, serial number, and date of calibration. 4. Form of Test Reports: Where the TAB standard being followed recommends a report format use that; otherwise, follow ASHRAE Std Units of Measure: Report data in 1-P (inch-pound) units only. 6. Include the following on the title page of each report: a. Name of Testing, Adjusting, and Balancing Agency. b. Address of Testing, Adjusting, and Balancing Agency. c. Telephone number of Testing, Adjusting, and Balancing Agency. d. Project name. e. Project location. f. Project Engineer. g. Project Engineer. h. Project Contractor. i. Report date. PART 2 PRODUCTS NOT USED PART 3 EXECUTION 3.01 GENERAL REQUIREMENTS A. Perform total system balance in accordance with one of the following: 1. AABC MN-1, AABC National Standards for Total System Balance. 2. ASH RAE Std 111, Practices for Measurement, Testing, Adjusting and Balancing of Building Heating, Ventilation, Air-Conditioning, and Refrigeration Systems. 3. NEBB Procedural Standards for Testing Adjusting Balancing of Environmental Systems. 4. SMACNA (TAB). B. Begin work after completion of systems to be tested, adjusted, or balanced and complete work prior to Substantial Completion of the project. C. Where HVAC systems and/or components interface with life safety systems, including fire and smoke detection, alarm, and control, coordinate scheduling and testing and inspection procedures with the authorities having jurisdiction. D. TAB Agency Qualifications: 1. Company specializing in the testing, adjusting, and balancing of systems specified in this section. 2. Having minimum of three years documented experience. 3. Certified by one of the following: a. AABC, Associated Air Balance Council: upon completion submit AABC National Performance Guaranty. b. NEBB, National Environmental Balancing Bureau: c. TABB, The Testing, Adjusting, and Balancing Bureau of National Energy Management Institute: E. TAB Supervisor and Technician Qualifications: Certified by same organization as TAB agency EXAMINATION A. Verify that systems are complete and operable before commencing work. Ensure the following conditions: 1. Systems are started and operating in a safe and normal condition. 2. Temperature control systems are installed complete and operable. 3. Proper thermal overload protection is in place for electrical equipment of 5 TESTING, ADJUSTING, AND BALANCING FOR HVAC

9 4. Final filters are clean and in place. If required, install temporary media in addition to final filters. 5. Duct systems are clean of debris. 6. Fans are rotating correctly. 7. Fire and volume dampers are in place and open. 8. Air coil fins are cleaned and combed. 9. Access doors are closed and duct end caps are in place. 10. Air outlets are installed and connected. 11. Duct system leakage is minimized. 12. Hydronic systems are flushed, filled, and vented. 13. Pumps are rotating correctly. 14. Proper strainer baskets are clean and in place. 15. Service and balance valves are open. B. Submit field reports. Report defects and deficiencies that will or could prevent proper system balance. C. Beginning of work means acceptance of existing conditions PREPARATION A. Hold a pre-balancing meeting at least one week prior to starting TAB work. 1. Require attendance by all installers whose work will be tested, adjusted, or balanced ADJUSTMENT TOLERANCES A. Air Handling Systems: Adjust to within plus or minus 5 percent of design for supply systems and plus or minus 10 percent of design for return and exhaust systems. B. Air Outlets and Inlets: Adjust total to within plus 10 percent and minus 5 percent of design to space. Adjust outlets and inlets in space to within plus or minus 10 percent of design. C. Hydronic Systems: Adjust to within plus or minus 10 percent of design RECORDING AND ADJUSTING A. Field Logs: Maintain written logs including: 1. Running log of events and issues. 2. Discrepancies, deficient or uncompleted work by others. 3. Contract interpretation requests. 4. Lists of completed tests. B. Ensure recorded data represents actual measured or observed conditions. C. Permanently mark settings of valves, dampers, and other adjustment devices allowing settings to be restored. Set and lock memory stops. D. Mark on the drawings the locations where traverse and other critical measurements were taken and cross reference the location in the final report. E. After adjustment, take measurements to verify balance has not been disrupted or that such disruption has been rectified. F. Leave systems in proper working order, replacing belt guards, closing access doors, closing doors to electrical switch boxes, and restoring thermostats to specified settings AIR SYSTEM PROCEDURE A. Adjust air handling and distribution systems to provide required or design supply, return, and exhaust air quantities at site altitude. B. Measure air quantities at air inlets and outlets. C. Adjust distribution system to obtain uniform space temperatures free from objectionable drafts and noise of 5 TESTING, ADJUSTING, AND BALANCING FOR HVAC

10 D. Use volume control devices to regulate air quantities only to extend that adjustments do not create objectionable air motion or sound levels. Effect volume control by duct internal devices such as dampers and splitters. E. Vary total system air quantities by adjustment of fan speeds. Provide drive changes required. Vary branch air quantities by damper regulation. F. Measure static air pressure conditions on air supply units, including filter and coil pressure drops, and total pressure across the fan. Make allowances for 50 percent loading of filters. G. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers for design conditions. H. Measure temperature conditions across outside air, return air, and exhaust dampers to check leakage. I. Where modulating dampers are provided, take measurements and balance at extreme conditions. Balance variable volume systems at maximum air flow rate, full cooling, and at minimum air flow rate, full heating WATER SYSTEM PROCEDURE A. Adjust water systems to provide required or design quantities. B. Use calibrated Venturi tubes, orifices, or other metered fittings and pressure gauges to determine flow rates for system balance. Where flow metering devices are not installed, base flow balance on temperature difference across various heat transfer elements in the system. C. Verify specified flow to Heat pumps then open circuit setters completely 3.08 SCOPE A. Test, adjust, and balance the following: 1. HVAC Pumps 2. Packaged Terminal Air Conditioning Units 3. Fans 4. Air Filters 5. Air Inlets and Outlets 3.09 MINIMUM DATA TO BE REPORTED A. Electric Motors: 1. Manufacturer 2. Model/Frame 3. HP/BHP 4. Phase, voltage, amperage; nameplate, actual, no load 5. RPM B. Pumps: 1. Identification/number 2. Manufacturer 3. Size/model 4. Design flow rate, pressure drop, BHP 5. Actual flow rate, pressure drop, BHP 6. Discharge pressure 7. Suction pressure 8. Total operating head pressure C. Air Moving Equipment: 1. Location 2. Manufacturer 3. Model number 4. Serial number 5. ArrangemenUCiass/Discharge 6. Air flow, specified and actual of 5 TESTING, ADJUSTING, AND BALANCING FOR HVAC

11 7. Return air flow, specified and actual 8. Outside air flow, specified and actual 9. Total static pressure (total external), specified and actual 10. Inlet pressure 11. Discharge pressure D. Return Air/Outside Air: 1. Identification/location 2. Design air flow 3. Actual air flow 4. Design return air flow 5. Actual return air flow 6. Design outside air flow 7. Actual outside air flow E. Exhaust Fans: 1. Location 2. Manufacturer 3. Model number 4. Serial number 5. Air flow, specified and actual F. Duct Traverses: 1. System zone/branch 2. Duct size 3. Area 4. Design velocity 5. Design air flow 6. Test velocity 7. Test air flow 8. Duct static pressure G. Air Distribution Tests: 1. Air terminal number 2. Room number/location 3. Terminal type 4. Terminal size 5. Design velocity 6. Design air flow 7. Test (final) velocity 8. Test (final) air flow END OF SECTION of 5 TESTING, ADJUSTING, AND BALANCING FOR HVAC

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13 PART1 GENERAL 1.01 SECTION INCLUDES A. Duct insulation. B. Duct Liner. C. Insulation jackets RELATED REQUIREMENTS SECTION DUCT INSULATION A. Section Volatile Organic Compound (VOC) Content Restrictions. B. Section Identification for HVAC Piping and Equipment REFERENCE STANDARDS A. ASTM B209- Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate; B. ASTM B209M - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate [Metric]; C. ASTM C518- Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus; D. ASTM C612- Standard Specification for Mineral Fiber Block and Board Thermal Insulation; E. ASTM E84- Standard Test Method for Surface Burning Characteristics of Building Materials; 2015a. F. UL 723- Standard for Test for Surface Burning Characteristics of Building Materials; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide product description, thermal characteristics, list of materials and thickness for each service, and locations QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing products of the type specified in this section with not less than three years of documented experience. B. Applicator Qualifications: Company specializing in performing the type of work specified in this section and approved by manufacturer DELIVERY, STORAGE, AND HANDLING A. Accept materials on site in original factory packaging, labelled with manufacturer's identification, including product density and thickness. B. Protect insulation from weather and construction traffic, dirt, water, chemical, and mechanical damage, by storing in original wrapping FIELD CONDITIONS A. Maintain ambient temperatures and conditions required by manufacturers of adhesives, mastics, and insulation cements. B. Maintain temperature during and after installation for minimum period of 24 hours. PART 2 PRODUCTS 2.01 REGULATORY REQUIREMENTS A. Surface Burning Characteristics: Flame spread index/smoke developed index of 25/50, maximum, when tested in accordance with ASTM E84 or UL of 3 DUCT INSULATION

14 2.02 GLASS FIBER, FLEXIBLE A. Manufacturer: 1. Knauf Insulation: 2. Johns Manville: 3. Owens Corning Corporation: B. Vapor Barrier Jacket: 1. Kraft paper with glass fiber yarn and bonded to aluminized film GLASS FIBER, RIGID A. Manufacturer: 1. Knauf Insulation: 2. Johns Manville: 3. Owens Corning Corporation: B. Insulation: ASTM C612; rigid, noncombustible blanket. 1. 'K' Value: 0.24 at 75 degrees F, when tested in accordance with ASTM C JACKETS A. Aluminum Jacket: ASTM B209 (ASTM B209M). PART 3 EXECUTION 3.01 EXAMINATION A. Verify that ducts have been tested before applying insulation materials. B. Verify that surfaces are clean, foreign material removed, and dry INSTALLATION A. Install in accordance with manufacturer's instructions. B. Insulated ducts conveying air below ambient temperature: 1. Provide insulation with vapor barrier jackets. 2. Finish with tape and vapor barrier jacket. 3. Continue insulation through walls, sleeves, hangers, and other duct penetrations. 4. Insulate entire system including fittings, joints, flanges, fire dampers, flexible connections, and expansion joints. C. Insulated ducts conveying air above ambient temperature: 1. Provide with or without standard vapor barrier jacket. 2. Insulate fittings and joints. Where service access is required, bevel and seal ends of insulation. D. External Duct Insulation Application: 1. Secure insulation with vapor barrier with wires and seal jacket joints with vapor barrier adhesive or tape to match jacket. 2. Secure insulation without vapor barrier with staples, tape, or wires. 3. Install without sag on underside of duct. Use adhesive or mechanical fasteners where necessary to prevent sagging. Lift duct off trapeze hangers and insert spacers. 4. Seal vapor barrier penetrations by mechanical fasteners with vapor barrier adhesive. 5. Stop and point insulation around access doors and damper operators to allow operation without disturbing wrapping. E. Duct and Plenum Liner Application: 1. Adhere insulation with adhesive for 90 percent coverage. 2. Seal and smooth joints. Seal and coat transverse joints. 3. Seal liner surface penetrations with adhesive. 4. Duct dimensions indicated are net inside dimensions required for air flow. Increase duct size to allow for insulation thickness of 3 DUCT INSULATION

15 3.03 SCHEDULES A. See Duct insulation Schedule on Drawings END OF SECTION of 3 DUCT INSULATION

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17 PART1 GENERAL 1.01 SECTION INCLUDES A. Equipment insulation. B. Covering. C. Breaching insulation RELATED REQUIREMENTS SECTION HVAC EQUIPMENT INSULATION A. Section Interior Painting: Painting insulation covering. B. Section Identification for HVAC Piping and Equipment. C. Section Hydronic Piping: Placement of hangers and hanger inserts. D. Section Hydronic Specialties REFERENCE STANDARDS A. ASTM C534/C534M - Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form; B. ASTM E84- Standard Test Method for Surface Burning Characteristics of Building Materials; 2015a. C. UL 723- Standard for Test for Surface Burning Characteristics of Building Materials; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide product description, thermal characteristics, list of materials and thickness for equipment scheduled QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing the products specified in this section with not less than three years of documented experience. B. Applicator Qualifications: Company specializing in performing the type of work specified in this section and approved by manufacturer DELIVERY, STORAGE, AND HANDLING A. Accept materials on site in original factory packaging, labeled with manufacturer's identification, including product density and thickness. B. Protect insulation from weather and construction traffic, dirt, water, chemical, and mechanical damage, by storing in original wrapping FIELD CONDITIONS A. Maintain ambient temperatures and conditions required by manufacturers of adhesives, mastics, and insulation cements. B. Maintain temperature during and after installation for minimum period of 24 hours. PART 2 PRODUCTS 2.01 REGULATORY REQUIREMENTS A. Surface Burning Characteristics: Flame spread index/smoke developed index of 25/50, maximum, when tested in accordance with ASTM E84 or UL FLEXIBLE ELASTOMERIC CELLULAR INSULATION A. Manufacturer: 1. Aeroflex USA, Inc: 2. Armacell LLC: of 2 HVAC EQUIPMENT INSULATION

18 3. K-Fiex USA LLC: B. Insulation: Preformed flexible elastomeric cellular rubber insulation complying with ASTM C534/C534M Grade 3, in sheet form. 1. Minimum Service Temperature: Minus 40 degrees F. 2. Maximum Service Temperature: 220 degrees F. 3. Connection: Waterproof vapor barrier adhesive. C. Elastomeric Foam Adhesive: Air dried, contact adhesive, compatible with insulation. PART 3 EXECUTION 3.01 EXAMINATION A. Verify that equipment has been tested before applying insulation materials. B. Verify that surfaces are clean and dry, with foreign material removed INSTALLATION A. Install in accordance with manufacturer's instructions. B. Factory Insulated Equipment: Do not insulate. C. Exposed Equipment: Locate insulation and cover seams in least visible locations. D. Apply insulation close to equipment by grooving, scoring, and beveling insulation. Fasten insulation to equipment with studs, pins, clips, adhesive, wires, or bands. E. Fill joints, cracks, seams, and depressions with bedding compound to form smooth surface. On cold equipment, use vapor barrier cement. F. Insulated equipment containing fluids below ambient temperature; insulate entire system. G. Nameplates and ASME Stamps: Bevel and seal insulation around; do not insulate over. H. Equipment Requiring Access for Maintenance, Repair, or Cleaning: Install insulation so it can be easily removed and replaced without damage. END OF SECTION of 2 HVAC EQUIPMENT INSULATION

19 PART1 GENERAL 1.01 SECTION INCLUDES A. Piping insulation. B. Jackets and accessories RELATED REQUIREMENTS SECTION HVAC PIPING INSULATION A. Section Volatile Organic Compound (VOC) Content Restrictions. B. Section Firestopping. C. Section Interior Painting: Painting insulation jacket. D. Section Hydronic Piping: Placement of hangers and hanger inserts REFERENCE STANDARDS A. ASTM B209- Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate; B. ASTM B209M - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate [Metric]; C. ASTM C534/C534M - Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form; D. ASTM E84- Standard Test Method for Surface Burning Characteristics of Building Materials; 2015a. E. UL 723- Standard for Test for Surface Burning Characteristics of Building Materials; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide product description, thermal characteristics, list of materials and thickness for each service, and locations. C. Manufacturer's Instructions: Indicate installation procedures that ensure acceptable workmanship and installation standards will be achieved QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing the Products specified in this section with not less than three years of documented experience. B. Applicator Qualifications: Company specializing in performing the type of work specified in this section and approved by manufacturer DELIVERY, STORAGE, AND HANDLING A. Accept materials on site, labeled with manufacturer's identification, product density, and thickness FIELD CONDITIONS A. Maintain ambient conditions required by manufacturers of each product. B. Maintain temperature before, during, and after installation for minimum of 24 hours. PART 2 PRODUCTS 2.01 REGULATORY REQUIREMENTS A. Surface Burning Characteristics: Flame spread index/smoke developed index of 25/50, maximum, when tested in accordance with ASTM E84 or UL GLASS FIBER A. Manufacturers: of 2 HVAC PIPING INSULATION

20 1. CertainTeed Corporation: 2. Johns Manville Corporation: 3. Knauf Insulation: FLEXIBLE ELASTOMERIC CELLULAR INSULATION A. Manufacturer: 1. Aeroflex USA, Inc: 2. Armacell LLC: 3. K-Fiex USA LLC: B. Insulation: Preformed flexible elastomeric cellular rubber insulation complying with ASTM C534/C534M Grade 3; use molded tubular material wherever possible. 1. Minimum Service Temperature: Minus 40 degrees F JACKETS A. Aluminum Jacket: ASTM B209 (ASTM B209M} formed aluminum sheet. 1. Thickness: inch sheet. 2. Finish: Smooth. 3. Joining: Longitudinal slip joints and 2 inch laps. 4. Fittings: inch thick die shaped fitting covers with factory attached protective liner. PART 3 EXECUTION 3.01 EXAMINATION A. Verify that piping has been tested before applying insulation materials. B. Verify that surfaces are clean and dry, with foreign material removed INSTALLATION A. Install in accordance with manufacturer's instructions. B. Exposed Piping: Locate insulation and cover seams in least visible locations. C. Insulated pipes conveying fluids below ambient temperature; insulate entire system including fittings, valves, unions, flanges, strainers, flexible connections, pump bodies, and expansion joints. D. Inserts and Shields: 1. Application: Piping 1-1/2 inches diameter or larger. 2. Shields: Galvanized steel between pipe hangers or pipe hanger rolls and inserts. 3. Insert location: Between support shield and piping and under the finish jacket. 4. Insert Configuration: Minimum 6 inches long, of same thickness and contour as adjoining insulation; may be factory fabricated. E. Continue insulation through walls, sleeves, pipe hangers, and other pipe penetrations. Finish at supports, protrusions, and interruptions. At fire separations, refer to Section F. Heat Traced Piping: Insulate fittings, joints, and valves with insulation of like material, thickness, and finish as adjoining pipe. Size large enough to enclose pipe and heat tracer. Cover with aluminum jacket with seams located on bottom side of horizontal piping SCHEDULE A. Ground Source Supply & Return 1. Ground Source Water a. 1" Fiberglass with ASJ Viton Fittings END OF SECTION of 2 HVAC PIPING INSULATION

21 PART1 GENERAL 1.01 SUMMARY SECTION COMMISSIONING OF HVAC A. This section covers the Contractor's responsibilities for commissioning; each subcontractor or installer responsible for the installation of a particular system or equipment item to be commissioned is responsible for the commissioning activities relating to that system or equipment item. 1. The State of Missouri shall be the Commissioning Authority for commissioning activities ensuring a fully functional HVAC system is provided. B. The entire HVAC system is to be commissioned, including commissioning activities for the following specific items: 1. Control system. 2. Major and minor equipment items. 3. Piping systems and equipment. 4. Special Ventilation: a. Carbon dioxide detection. 5. Other equipment and systems explicitly identified elsewhere in Contract Documents as requiring commissioning. C. The Prefunctional Checklist and Functional Test requirements specified in this section are in addition to, not a substitute for, inspection or testing specified in other sections RELATED REQUIREMENTS A. Section Instrumentation and Control Devices for HVAC. B. Section Sequence of Operations for HVAC Controls. C. Section Testing, Adjusting, and Balancing for HVAC REFERENCE STANDARDS A. ASHRAE Guideline 1.1 -The HVAC Commissioning Process; SUBMITTALS A. Updated Submittals: Keep the Commissioning Authority informed of all changes to control system documentation made during programming and setup; revise and resubmit when substantial changes are made. B. DRAFT Prefunctional Checklists and Functional Test Procedures for Control System: Detailed written plan indicating the procedures to be followed to test, checkout and adjust the control system prior to full system Functional Testing; include at least the following for each type of equipment controlled: 1. System name. 2. List of devices. 3. Step-by-step procedures for testing each controller after installation, including: a. Process of verifying proper hardware and wiring installation. b. Process of downloading programs to local controllers and verifying that they are addressed correctly. c. Process of performing operational checks of each controlled component. d. Plan and process for calibrating valve and damper actuators and all sensors. e. Description of the expected field adjustments for transmitters, controllers and control actuators should control responses fall outside of expected values. 4. Copy of proposed log and field checkout sheets to be used to document the process; include space for initial and final read values during calibration of each point and space to specifically indicate when a sensor or controller has "passed" and is operating within the contract parameters. 5. Description of the instrumentation required for testing of 6 COMMISSIONING OF HVAC

22 6. Indicate what tests on what systems should be completed prior to TAB using the control system for TAB work. Coordinate with the Commissioning Authority and TAB contractor for this determination. C. Startup Reports, Prefunctional Checklists, and Trend Logs: Submit for approval of Commissioning Authority. D. HVAC Control System O&M Manual Requirements. In addition to documentation specified elsewhere, compile and organize at minimum the following data on the control system: 1. Specific step-by-step instructions on how to perform and apply all functions, features, modes, etc. mentioned in the controls training sections of this specification and other features of this system. Provide an index and clear table of contents. Include the detailed technical manual for programming and customizing control loops and algorithms. 2. Full as-built set of control drawings. 3. Full as-built sequence of operations for each piece of equipment. 4. Full points list; in addition to the information on the original points list submittal, include a listing of all rooms with the following information for each room: a. Floor. b. Room number. c. Room name. d. Air handler unit ID. e. Reference drawing number. f. Air terminal unit tag I D. g. Heating and/or cooling valve tag I D. h. Minimum air flow rate. i. Maximum air flow rate. 5. Full print out of all schedules and set points after testing and acceptance of the system. 6. Full as-built print out of software program. 7. Electronic copy on disk of the entire program for this facility. 8. Marking of all system sensors and thermostats on the as-built floor plan and HVAC drawings with their control system designations. 9. Maintenance instructions, including sensor calibration requirements and methods by sensor type, etc. 10. Control equipment component submittals, parts lists, etc. 11. Warranty requirements. 12. Copies of all checkout tests and calibrations performed by the Contractor (not commissioning tests). 13. Organize and subdivide the manual with permanently labeled tabs for each of the following data in the given order: a. Sequences of operation. b. Control drawings. c. Points lists. d. Controller and/or module data. e. Thermostats and timers. f. Sensors and DP switches. g. Valves and valve actuators. h. Dampers and damper actuators. i. Program setups (software program printouts). E. Project Record Documents: 1. Submit updated version of control system documentation, for inclusion with operation and maintenance data. 2. Show actual locations of all static and differential pressure sensors (air, water and building pressure) and air-flow stations on project record drawings. F. Draft Training Plan: 1. Follow the recommendations of ASH RAE Guideline of 6 COMMISSIONING OF HVAC

23 2. Control system manufacturer's recommended training. 3. Demonstration and instruction on function and overrides of any local packaged controls not controlled by the HVAC control system. G. Training Manuals: 1. Provide three extra copies of the controls training manuals in a separate manual from the O&M manuals. PART 2 PRODUCTS 2.01 TEST EQUIPMENT A. Provide all standard testing equipment required to perform startup and initial checkout and required functional performance testing; unless otherwise noted such testing equipment will NOT become the property of Owner. B. Equipment-Specific Tools: Where special testing equipment, tools and instruments are specific to a piece of equipment, are only available from the vendor, and are required in order to accomplish startup or Functional Testing, provide such equipment, tools, and instruments as part of the work at no extra cost to Owner; such equipment, tools, and instruments are to become the property of Owner. PART 3 EXECUTION 3.01 PREPARATION A. Cooperate with CM Engineering Inc. and State of Missouri in development of the Prefunctional Checklists and Functional Test Procedures. B. Furnish additional information requested by CM Engineering Inc. and or State of Missouri. C. Prepare a preliminary schedule for HVAC pipe and duct system testing, flushing and cleaning, equipment start-up and testing, adjusting, and balancing start and completion for use by the CM Engineering lnc.and State of Missouri; update the schedule as appropriate. D. Notify the CM Engineering Inc. and State of Missouri when pipe and duct system testing, flushing, cleaning, startup of each piece of equipment and testing, adjusting, and balancing will occur; when commissioning activities not yet performed or not yet scheduled will delay construction notify ahead of time and be proactive in seeing that the parties have the scheduling information needed to efficiently observe the commissioning process. E. Put all HVAC equipment and systems into operation and continue operation during each working day of testing, adjusting, and balancing and commissioning, as required. F. Provide test holes in ducts and plenums where directed to allow air measurements and air balancing; close with an approved plug. G. Provide temperature and pressure taps in accordance with the contract documents INSPECTING AND TESTING - GENERAL A. Submit startup plans, startup reports, and Prefunctional Checklists for each item of equipment or other assembly to be commissioned. B. Provide two-way radios for use during the testing. C. Valve/Damper Stroke Setup and Check: 1. For all valve/damper actuator positions checked, verify the actual position against the control system readout. 2. Set pump/fan to normal operating mode. 3. Command valve/damper closed; visually verify that valve/damper is closed and adjust output zero signal as required. 4. Command valve/damper open; verify position is full open and adjust output signal as required. 5. Command valve/damper to a few intermediate positions. 6. If actual valve/damper position does not reasonably correspond, replace actuator or add pilot positioner (for pneumatics) of 6 COMMISSIONING OF HVAC

24 D. Isolation Valve or System Valve Leak Check: For valves not by coils. 1. With full pressure in the system, command valve closed. 2. Use an ultra-sonic flow meter to detect flow or leakage. E. Deficiencies: Correct deficiencies and re-inspect or re-test, as applicable, at no extra cost to Owner TAB COORDINATION A. TAB: Testing, adjusting, and balancing of HVAC. B. Coordinate commissioning schedule with TAB schedule. C. Review the TAB plan to determine the capabilities of the control system toward completing TAB. D. Provide all necessary unique instruments and instruct the TAB technicians in their use; such as handheld control system interface for setting terminal unit boxes, etc. E. Have all required Prefunctional Checklists, calibrations, startup and component Functional Tests of the system completed and approved by the CM Engineering Inc. prior to starting TAB. F. Provide a qualified control system technician to operate the controls to assist the TAB technicians or provide sufficient training for the TAB technicians to operate the system without assistance CONTROL SYSTEM FUNCTIONAL TESTING A. Prefunctional Checklists for control system components will require a signed and dated certification that all system programming is complete as required to accomplish the requirements of the Contract Documents and the detailed Sequences of Operation documentation submittal. B. Do not start Functional Testing until all controlled components have themselves been successfully Functionally Tested in accordance with the contract documents. C. Using a skilled technician who is familiar with this building, execute the Functional Testing of the control system as required by the Commissioning Authority. D. Functional Testing of the control system constitutes demonstration and trend logging of control points monitored by the control system. 1. The scope of trend logging is partially specified; trend log up to 50 percent more points than specified at no extra cost to Owner. 2. Perform all trend logging specified in Prefunctional Checklists and Functional Test procedures. E. Functionally Test integral or stand-alone controls in conjunction with the Functional Tests of the equipment they are attached to, including any interlocks with other equipment or systems; further testing during control system Functional Test is not required unless specifically indicated below. F. Demonstrate the following to the Commissioning Authority during testing of controlled equipment; coordinate with commissioning of equipment. 1. Setpoint changing features and functions. 2. Sensor calibrations. G. Demonstrate to the Commissioning Authority: 1. That all specified functions and features are set up, debugged and fully operable. 2. That scheduling features are fully functional and setup, including holidays. 3. That all graphic screens and value readouts are completed. 4. Correct date and time setting in central computer. 5. That field panels read the same time as the central computer; sample 10 percent of field panels; if any of those fail, sample another 10 percent; if any of those fail test all remaining units at no extra cost to Owner. 6. Functionality of field panels using local operator keypads and local ports (plug-ins) using portable computer/keypad; demonstrate 100 percent of panels and 10 percent of ports; if of 6 COMMISSIONING OF HVAC

25 any ports fail, sample another 10 percent; if any of those fail, test all remaining units at no extra cost to Owner. 7. Power failure and battery backup and power-up restart functions. 8. Global commands features. 9. Security and access codes. 10. Occupant over-rides (manual, telephone, key, keypad, etc.). 11. O&M schedules and alarms. 12. Occupancy sensors and controls. 13. All control strategies and sequences not tested during controlled equipment testing. H. If the control system, integral control components, or related equipment do not respond to changing conditions and parameters appropriately as expected, as specified and according to acceptable operating practice, under any of the conditions, sequences, or modes tested, correct all systems, equipment, components, and software required at no additional cost to Owner OPERATION AND MAINTENANCE MANUALS A. Add design intent documentation furnished by Engineer to manuals prior to submission to Owner. B. Submit manuals related to items that were commissioned to Commissioning Authority for review; make changes recommended by Commissioning Authority. C. Commissioning Authority will add commissioning records to manuals after submission to Owner DEMONSTRATION AND TRAINING A. Demonstrate operation and maintenance of HVAC system to Owner' personnel; if during any demonstration, the system fails to perform in accordance with the information included in the O&M manual, stop demonstration, repair or adjust, and repeat demonstration. Demonstrations may be combined with training sessions if appropriate. B. These demonstrations are in addition to, and not a substitute for, Prefunctional Checklists and demonstrations to the Commissioning Authority during Functional Testing. C. Provide classroom and hands-on training of Owner's designated personnel on operation and maintenance of the HVAC system, control system, and all equipment items indicated to be commissioned. Provide the following minimum durations of training: D. TAB Review: Instruct Owner's personnel for minimum 4 hours, after completion of TAB, on the following: 1. Review final TAB report, explaining the layout and meanings of each data type. 2. Discuss any outstanding deficient items in control, ducting or design that may affect the proper delivery of air or water. 3. Identify and discuss any terminal units, duct runs, diffusers, coils, fans and pumps that are close to or are not meeting their design capacity. 4. Discuss any temporary settings and steps to finalize them for any areas that are not finished. 5. Other salient information that may be useful for facility operations, relative to TAB. E. HVAC Control System Training: Perform training in at least three phases: 1. Phase 1 -Basic Control System: Provide minimum of 4 hours of actual training on the control system itself. Upon completion of training, each attendee, using appropriate documentation, should be able to perform elementary operations and describe general hardware architecture and functionality of the system. a. This training may be held on-site or at the manufacturer's facility. b. If held off-site, the training may occur prior to final completion of the system installation. c. For off-site training, Contractor shall pay expenses of up to two attendees. 2. Phase 2- Integrating with HVAC Systems: Provide minimum of 8 hours of on-site, hands-on training after completion of Functional Testing. Include instruction on: of 6 COMMISSIONING OF HVAC

26 a. The specific hardware configuration of installed systems in this facility and specific instruction for operating the installed system, including interfaces with other systems, if any. b. Security levels, alarms, system start-up, shut-down, power outage and restart routines, changing setpoints and alarms and other typical changed parameters, overrides, freeze protection, manual operation of equipment, optional control strategies that can be considered, energy savings strategies and set points that if changed will adversely affect energy consumption, energy accounting, procedures for obtaining vendor assistance, etc. c. Trend logging and monitoring features (values, change of state, totalization, etc.), including setting up, executing, downloading, viewing both tabular and graphically and printing trends; provide practice in setting up trend logging and monitoring during training session. d. Every display screen, allowing time for questions. e. Point database entry and modifications. 3. Phase 3 - Post-Occupancy: Six months after occupancy conduct minimum of 8 hours of training. Tailor training session to questions and topics solicited beforehand from Owner. Also be prepared to address topics brought up and answer questions concerning operation of the system. F. Provide the services of manufacturer representatives to assist instructors where necessary. G. Provide the services of the HVAC controls instructor at other training sessions, when requested, to discuss the interaction of the controls system as it relates to the equipment being discussed. END OF SECTION of 6 COMMISSIONING OF HVAC

27 PART1 GENERAL 1.01 SECTION INCLUDES SECTION INSTRUMENTATION AND CONTROL DEVICES FOR HVAC A. The work of this section shall monitor and control the scheduled HVAC equipment as a complete system to perform the control sequences and provide the Owner with the adjustability as described herein. B. It is the responsibility of the contractor to provide hardware and software as required to supplement any points not available from the equipment manufacturer to create a complete seamless system. C. The contractor shall be fully responsible for the final operation of the system and shall take full responsibility for providing system functionality. D. Miscellaneous accessories RELATED REQUIREMENTS A. Section Equipment Wiring: Electrical characteristics and wiring connections ADMINISTRATIVE REQUIREMENTS A. Preinstallation Meeting: Conduct a preinstallation meeting one week before starting work of this section; require attendance by all affected installers. B. Sequencing: Ensure that utility connections are achieved in an orderly and expeditious manner SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: Provide description and engineering data for each control system component. Include sizing as requested. Provide data for each system component and software module. C. Shop Drawings: Indicate complete operating data, system drawings, wiring diagrams, and written detailed operational description of sequences. Submit schedule of valves indicating size, flow, and pressure drop for each valve. For automatic dampers indicate arrangement, velocities, and static pressure drops for each system. D. Warranty: Submit manufacturers warranty and ensure forms have been filled out in Owners name and registered with manufacturer QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing the Products specified in this section with minimum five years national experience. 1. Utilizes the Tridium Niagara network as the primary engineering, integration, and graphical interface platform. 2. Has a full line of Bacnet Testing Laboratory (BTL) listed control devices. 3. Offers a 3 year part replacement warranty on all BACnet control modules. 4. Manufactures a full line of field devices (valves, damper actuators, sensors, relays, etc.) to insure single source product sourcing and support. 5. Manufactures all products in the USA. B. Installer Qualifications: Company specializing in performing the work of this section approved by manufacturer. 1. Temperature Control/BAS Contractor shall be a dedicated temperature control contractor, and shall be able to produce documentation proving professional capability as described herein: a. Shall have a minimum of two (02) Tridium certified applications engineers on full time staff at the time of bid to insure full support capabilities of 4 INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

28 b. Shall have a project portfolio that includes ten (I 0) completed Tridium installations of similar size and complex~y to this project. C. Products Requiring Electrical Connection: Usted and classified by Underwriters Laboratories Inc., as su~able for the purpose specified and indicated WARRANTY A. Correct defective Work within a three period after Substantial Completion. I. This includes replacement or repair of defective devices, as well as modification of system parameters and seasonal adjustments as needed to insure proper system operation. PART2 PRODUCTS 2.01 BUILDING AUTOMATIONSYSTEM A. The Building Automation System (BAS) shall be an open protocol Direct Digital Control (DOC) system consisting of distributed Bacnet control components networked together to form a complete integrated system. The controller network(s) will be connected to a Tridium Niagarabased web-based control module providing local and remote operator graphical interface via a common web browser. 1. The BAS shall be Niagara 4 (N4); AX based systems are not acceptable. 2. Where indicated in the project documents, the HVAC equipment manufacturer shall provide a factory mounted open protocol controller (Bacnet or LON) to operate that piece of equipment. 3. The Temperature Control Contractor (TCC) shall provide: a. All the necessary field wiring to integrate that module into the BAS, as well as space sensor wiring as required. b. All installation, software and technical services to integrate those factory components into the overall BAS to form a single seamless building automation system. c. All required turnkey controls for all non-manufacturer controlled equipment as needed to meet the sequence of operations and points lists. 4. All control modules provided for the BAS shall be listed by BTL (Bacnet Testing Laboratories) certified. No proprietary control components shall be used. No ARCnet adaptors shall be required or used. 5. The BAS shall include a web-based central module that can: a. be accessed, programmed, and modified from a standard web-browser. 1) Systems requiring software to be installed on the workstation for remote or local access shall not be allowed. b. W~h proper security credentials the operator shall be able to: 1) Change schedules. 2) Create and modify trends. 3) Create and modify programming. 4) Create and modify alarms. 5) Perform any normal operator functions directly from the web-browser. c. The BAS system shall be capable of generating alarms. 6. The BAS Operator Interface shall include system web graphics that include: a. Building floor plans w~h animated links. b. Area details with space sensor values. c. Individual equipment animated graphics. d. Links to sequence of operations by equipment. e. Links to summary sheets. 7. The system shall be configured to produce history trends for each hardware point and each set point at 15 minute intervals for 500 data points. This defau~ setup shall be adjustable by the operator directly from the web access MANUFACTURERS A. KMC (Tridium GUI) -BASIS OF DESIGN. B. Alerton (Tridium version) of 4 INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

29 C. Johnson (Branch Office Only -No ABCS offices. D. Siemens (Talon Tridium version only; Apogee does not comply) REMOTE ACCESS AND SUPPORT A. The contractor shall only use state agency approved equipment to connect to the state agency's network. The contractor shall be able to securely connect to the state agency's network via one of the two (2) options listed below. Wnhin thirty (30) calendar days of the state agency's authorization to proceed with services, the contractor shall advise the state agency which option the contractor will utilize. 1. Option 1 (preferred method for contractor connection)- The contractors hall utilize a secure virtual desktop environment provided by the state agency. The contractor shall issue a request to the state agency for a virtual desktop environment and the state agency (via the Information Technology Services Division [ITSD]) shall provide the contractor wnh the appropriate environment and instructions. The contractor shall install appropriate virtual desktop client software on contractor workstations requiring a connection and use the contractor's Internet Service Provider for connectivity. 2. Option 2- The contractor shall install Cisco VPN client software on the contractor's workstations needing a connection and use the contractor's Internet Service Provider connection. Two factor authentication may be required wnh a hard token being the second factor. The contractor must allow for this. Contractor workstations must adhere to network access control policy which includes posture checking. The contractor shall issue a request to the state agency for VPN IDs and the state agency vvill provide the contractor with the VPN IDs, VPN client software and install instructions. B. Contractor shall configure the system to be accessible via a broviiser (wtthout addttional software) by the Owner from any personal computer the Owner chooses wtthin the IT system. C. Only a standard broviiser utilizing HTML5 (JAVA-based browser not acceptable) will be required for the Owner to access the system; systems requiring special software to be installed on the Owner's IT system or personal computer's and laptops are not acceptable. From the browser interface, the Owner shall be able to: 1. Monitor system operations. 2. Override equipment commands. 3. Modify schedules and calendars. 4. Configure and view data trends. 5. View and acknowledge system alarms. 6. Support Project Haystack point tagging. 7. Shall include N4 built in Owner created and modifiable dynamic live dashboard displays. a. Systems requiring 3rd party dashboard generation and modification are not acceptable. 8. Support relationship linking D. The browser interface shall be graphical in nature, and shall include floor plans, equipment details, and 'outlook-style' scheduling screens. E. The BAS shall allow for generation of alarms to the Owner's and service enttties via EQUIPMENT- GENERAL A. Products Requiring Electrical Connection: Usted and classified by Underwriters Laboratories Inc., as suttable for the purpose specified and indicated. B. All field devices (valves, damper actuators, sensors, relays, etc.) shall be manufactured by one of the above-listed product manufacturers and shall be in standard production and generally available. PART 3 EXECUTION 3.01 EXAMINATION A. Verify existing conditions before starting work. B. Verify that systems are ready to receive work of 4 INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

30 C. Beginning of installation means installer accepts existing conditions. D. Sequence work to ensure installation of components is complementary to installation of similar components in other systems. E. Coordinate installation of system components with installation of mechanical systems equipment such as air handling units and air terminal units. F. Ensure installation of components is complementary to installation of similar components. G. Coordinate installation of system components with installation of mechanical systems equipment such as air handling units and air terminal units INSTALLATION A. Install in accordance with manufacturer's instructions. B. The system installation shall comply with all local and national codes. C. Provide conduit and electrical wiring in accordance with Section Electrical material and installation shall be in accordance with appropriate requirements of Division 26. D. The BAS shall comply with this section and indicated provisions and shall monitor and control the scheduled HVAC equipment as a complete system to perform the control sequences on the Drawings and controls points INPUT/OUTPUT SUMMARY TABLE and provide the Owner with the adjustability as described herein. E. The Contractor shall be fully responsible for the final operation of the system and shall take full responsibility for providing the specified system functionality; it shall not be acceptable for the Contractor to abdicate responsibility for integration of the system to the equipment vendors. F. The INPUT/OUTPUT SUMMARY TABLE points list is mandatory. This is not a suggested list; the points have been selected for the benefit of the Owner in operating and maintaining the HVAC system effectively and efficiently and are all required. It is the responsibility of the contractor to provide hardware and software as required to supplement any points not available from the equipment manufacturer to create a complete seamless system. G. See Drawings for Sequence of Operation MAINTENANCE A. Provide service and maintenance of control system for three from Date of Substantial Completion. B. Provide complete service of controls systems, including call backs, and submit written report of each service call. END OF SECTION of 4 INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

31 PART1 GENERAL 1.01 SECTION INCLUDES A. Hydronic system requirements. B. Pipe hangers and supports. SECTION HYDRONIC PIPING C. Unions, flanges, mechanical couplings, and dielectric connections. D. Valves: 1. Ball valves. 2. Butterfly valves. 3. Check valves RELATED REQUIREMENTS A. Section Firestopping. B. Section Interior Painting. C. Section Plumbing Piping Insulation. D. Section HVAC Piping Insulation. E. Section Hydronic Specialties. F. Section HVAC Water Treatment: Pipe cleaning REFERENCE STANDARDS A. ASME B31.9- Building Services Piping; 2014 (ANSI/ASME B31.9). B. ASTM F708 - Standard Practice for Design and Installation of Rigid Pipe Hangers; 1992 (Reapproved 2014). C. ASTM F1476- Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications; 2007 (Reapproved 2013). D. AWWA C606- Grooved and Shouldered Joints; 2015 (ANSI/AWWA C606). E. MSS SP-58- Pipe Hangers and Supports - Materials, Design and Manufacture, Selection, Application, and Installation; Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.; ADMINISTRATIVE REQUIREMENTS A. Sequencing: Ensure that utility connections are achieved in an orderly and expeditious manner SUBMITTALS A. See Section Submittals, for submittal procedures. B. Product Data: 1. Include data on pipe materials, pipe fittings, valves, and accessories. 2. Indicate valve data and ratings. C. Project Record Documents: Record actual locations of valves QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing products of the type specified in this section, with minimum three years of experience. B. Installer Qualifications: Company specializing in performing work of the type specified in this section, with minimum three years of experience. C. Provide all grooved joint couplings, fittings, valves, specialties, and grooving tools from a single manufacturer DELIVERY, STORAGE, AND HANDLING A. Accept valves on site in shipping containers with labeling in place. Inspect for damage of 4 HYDRONIC PIPING

32 B. Provide temporary protective coating on cast iron and steel valves. C. Provide temporary end caps and closures on piping and fittings. Maintain in place until installation. D. Protect piping systems from entry of foreign materials by temporary covers, completing sections of the work, and isolating parts of completed system FIELD CONDITIONS A. Do not install underground piping when bedding is wet or frozen. PART 2 PRODUCTS 2.01 HYDRONIC SYSTEM REQUIREMENTS A. Comply with ASME B31.9 and applicable federal, state, and local regulations. B. Piping: Provide piping, fittings, hangers and supports as required, as indicated, and as follows: 1. Where more than one piping system material is specified, provide joining fittings that are compatible with piping materials and ensure that the integrity of the system is not jeopardized. 2. Use non-conducting dielectric connections whenever jointing dissimilar metals. 3. Grooved mechanical joints may be used in accessible locations only. a. Accessible locations include those exposed on interior of building, in pipe chases, and in mechanical rooms, aboveground outdoors, and as approved by Engineer. b. Use rigid joints unless otherwise indicated. 4. Provide pipe hangers and supports in accordance with ASME B31.9 or MSS SP-58 unless indicated otherwise. C. Pipe-to-Valve and Pipe-to-Equipment Connections: Use flanges, unions, or grooved couplings to allow disconnection of components for servicing; do not use direct welded, soldered, or threaded connections. D. Valves: Provide valves where indicated: 1. For throttling, bypass, or manual flow control services, use globe, ball, or butterfly valves. 2. In heating water, chilled water, or condenser water systems, butterfly valves may be used interchangeably with gate and globe valves PIPE HANGERS AND SUPPORTS A. Provide hangers and supports that comply with MSS SP If type of hanger or support for a particular situation is not indicated, select appropriate type using MSS SP-58 recommendations. B. In grooved installations, use rigid couplings with offsetting angle-pattern bolt pads or with wedge shaped grooves in header piping to permit support and hanging in accordance with ASME B UNIONS, FLANGES, MECHANICAL COUPLINGS, AND DIELECTRIC CONNECTIONS A. Unions for Pipe 2 Inches and Less: B. Flanges for Pipe 2 Inches and Greater: C. Mechanical Couplings for Grooved and Shouldered Joints: Two or more curved housing segments with continuous key to engage pipe groove, circular C-profile gasket, and bolts to secure and compress gasket. 1. Dimensions and Testing: In accordance with AWWA C Mechanical Couplings: Comply with ASTM F Bolts and Nuts: Hot dipped galvanized or zinc-electroplated steel. 4. When pipe is field grooved, provide coupling manufacturer's grooving tools BALL VALVES A. Up To and Including 2 Inches: of 4 HYDRONIC PIPING

33 1. Bronze one piece body, chrome plated brass ball, teflon seats and stuffing box ring, lever handle with balancing stops, solder ends with union BUTTERFLY VALVES A. Body: Cast or ductile iron with resilient replaceable EPDM seat, wafer, lug, or grooved ends, extended neck. B. Disc: Construct of aluminum bronze, chrome plated ductile iron, stainless steel, ductile iron with EPDM enscapsulation, or Buna-N enscapsulation. C. Operator: 10 position lever handle. PART 3 EXECUTION 3.01 PREPARATION A. Ream pipe and tube ends. Remove burrs. Bevel plain end ferrous pipe. B. Prepare pipe for grooved mechanical joints as required by coupling manufacturer. C. Remove scale and dirt on inside and outside before assembly. D. Prepare piping connections to equipment using jointing system specified. E. Keep open ends of pipe free from scale and dirt. Protect open ends with temporary plugs or caps. F. After completion, fill, clean, and treat systems. Refer to Section for additional requirements INSTALLATION A. Install in accordance with manufacturer's instructions. B. Route piping in orderly manner, parallel to building structure, and maintain gradient. C. Install piping to conserve building space and to avoid interfere with use of space. D. Group piping whenever practical at common elevations. E. Slope piping and arrange to drain at low points. F. Pipe Hangers and Supports: 1. Install in accordance with ASME B31.9, ASTM F708, or MSS SP Install hangers to provide minimum 1/2 inch space between finished covering and adjacent work. 3. Place hangers within 12 inches of each horizontal elbow. 4. Use hangers with 1-1/2 inch minimum vertical adjustment. Design hangers for pipe movement without disengagement of supported pipe. 5. Support vertical piping at every other floor. Support riser piping independently of connected horizontal piping. 6. Where several pipes can be installed in parallel and at same elevation, provide multiple or trapeze hangers. 7. Provide copper plated hangers and supports for copper piping. 8. Prime coat exposed steel hangers and supports. Refer to Section Hangers and supports located in crawl spaces, pipe shafts, and suspended ceiling spaces are not considered exposed. G. Provide clearance in hangers and from structure and other equipment for installation of insulation and access to valves and fittings. Refer to Section SCHEDULES A. See piping material schedule on drawings B. Hanger Spacing for Copper Tubing. 1. 1/2 inch and 3/4 inch: Maximum span, 5 feet; minimum rod size, 1/4 inch inch: Maximum span, 6 feet; minimum rod size, 1/4 inch /2 inch and 2 inch: Maximum span, 8 feet; minimum rod size, 3/8 inch of 4 HYDRONIC PIPING

34 C. Hanger Spacing for Steel Piping. 1. 1/2 inch, 3/4 inch, and 1 inch: Maximum span, 7 feet; minimum rod size, 1/4 inch /4 inches: Maximum span, 8 feet; minimum rod size, 3/8 inch /2 inches: Maximum span, 9 feet; minimum rod size, 3/8 inch inches: Maximum span, 10 feet; minimum rod size, 3/8 inch /2 inches: Maximum span, 11 feet; minimum rod size, 3/8 inch inches: Maximum span, 12 feet; minimum rod size, 3/8 inch inches: Maximum span, 14 feet; minimum rod size, 1/2 inch. D. Hanger Spacing for Plastic Piping. 1. 1/2 inch: Maximum span, 42 inches; minimum rod size, 1/4 inch. 2. 3/4 inch: Maximum span, 45 inches; minimum rod size, 1/4 inch inch: Maximum span, 51 inches; minimum rod size, 1/4 inch /4 inches: Maximum span, 57 inches; minimum rod size, 3/8 inch /2 inches: Maximum span, 63 inches; minimum rod size, 3/8 inch inches: Maximum span, 69 inches; minimum rod size, 3/8 inch. END OF SECTION of 4 HYDRONIC PIPING

35 PART1 GENERAL 1.01 SECTION INCLUDES SECTION GROUND-LOOP HEAT-PUMP PIPING A. Ground-coupled heat exchanger and connections to building piping system, serving: 1. Hydronic piping system specified in Section B. The Contractor is responsible for all aspects involved with the complete geothermal loop field installation. All materials, drilling, excavation, hauling of backfill, pumping, soil compaction and labor required shall be included in the bid price. C. The contractor is personally responsible to verify all local soil conditions to determine the appropriate drilling method and when and if casing is necessary. D. The Contractor shall take note: There is no guarantee to the Contractor that the location of any existing utilities are exactly as indicated on the plans. Some areas may require hand digging to locate that utility. The Contractor must include in the bid price, the repair of any domestic water, electrical, communication or any service line that may be damaged during the construction of this project. Any offsets required to route over or under existing lines shall also be included in the bid price of the project REFERENCE STANDARDS A. ASHRAE Publication: Ground-Source Geothermal Systems for Commercial and Institutional Buildings by Kavanaugh, S.P., and K. Rafferty B. ASTM Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing; C. ASTM Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products; D. ASTM Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter; E. ASTM Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing; F. ASTM Standard Specification for Polyethylene Plastics Pipe and Fittings Material; G. ASTM F714- Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter; H. ASTM F1055- Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing; I. IGSHPA (GROUT} - Grouting Procedures for GHP Systems; International Ground Source Heat Pump Association; J. IGSHPA (GVERT}- Grouting for Vertical GHP Systems; International Ground Source Heat Pump Association; K. IGSHPA (INSTALL)- Closed-Loop/Geothermal Heat Pump Systems Design and Installation Standards; International Ground Source Heat Pump Association; L. PPI TR-4- PPI Listing of Hydrostatic Design Basis (HOB), Hydrostatic Design Stress (HDS}, Strength Design Basis (SDS), Pressure Design Basis (PDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe; Plastics Pipe Institute; ADMINISTRATIVE REQUIREMENTS A. Preinstallation Meeting: Convene one week before starting work of this section. Require attendance by all installers involved with site work and HVAC work SUBMITTALS A. See Section Submittals, for submittal procedures of 8 GROUND-LOOP HEAT-PUMP PIPING

36 B. No substitutions will be allowed without authorization from the Architect/Engineer C. Installers Qualifications, provide documentation of Contractor's: 1. Copy of the Contractor's geothermal well driller license for the Missouri 2. Copy of the Contractor's certification as the proposed high density polyethylene (HOPE) pipe manufacturer's authorized installer. D. Product Data, Polyethylene Piping: Provide manufacturer's data for piping and pipe fittings, showing compliance with specified requirements. 1. Provide manufacturer's recommendations for fusion jointing. 2. Include certification of long term hydrostatic basis, or test reports. E. Product Data, Grout and Slurry: Provide information on thermal conductivity of proposed materials. F. Test Reports, provide the following reports: 1. Vertical Borehole Grout Testing 2. System Pressure Test 3. System Purging 4. Bore Log Report G. Samples: Provide one 2-inch length of pipe in selected size. H. Record Documents: Record actual locations of all underground piping installed relative to Owner's permanent structure on same property and the following:. 1. Vertical Bores Locations. 2. Well Field Valve Locations I. Contractors Certification: Submit certification that work completed as specified by this section and described by the plans has been constructed accordingly and in compliance with State and local requirements. J. Warranty: Submit manufacturers warranty and ensure forms have been filled out in Owner's name and registered with manufacturer. K. Operation and Maintenance Data: Provide procedures for pressurizing, charging, and isolation for equipment replacement QUALITY ASSURANCE A. Installer Qualifications: Company specializing in performing the work of this section with minimum 5 years of documenteddocumented experience and accredited by IGSHPAand accredited by IGSHPA. B. The Contractor shall be a licensed geothermal well driller in Missouri and shall be versed in the completion of vertical loop heat exchangers as described in this section of these specifications. C. Heat Fusion Technician Certification: IGSHPA training and certification, certified within three years from the date of project commencement. D. Fabricators must be heat fusion certified by an authorized high density polyethylene (HOPE) pipe manufacturer's representative of the brand of pipe used. Certification must include: successful completion of a written heat fusion exam as well as demonstrating proper heat fusion techniques under the direct supervision of the authorized HOPE pipe manufacturer's representative. E. This design has been prepared in accordance with the materials standards and accepted This design has been prepared in accordance with the materials standards and accepted practices as well as all State and local regulations pertaining to the installation DELIVERY, STORAGE, AND HANDLING A. Deliver piping and fittings to project site in shipping containers with labeling in place. 1. Verify that labels on piping indicate manufacturer's name, pipe or tube size, and PE cell classification. 2. Verify that piping complies with specifications and is undamaged of 8 GROUND-LOOP HEAT-PUMP PIPING

37 B. Protect from weather, humidity and temperature variations, dirt and dust, and other environmental contaminants. C. Store piping capped or plugged until time of installation WARRANTY A. Pipe (and fittings) for this section shall carry a Manufactures Warranty of no less than 50 years. PART 2 PRODUCTS 2.01 HEAT EXCHANGER A. The ground-coupled heat exchanger has been designed; Contractor is responsible for execution as required in the Contract Documents. B. Heat Exchanger Performance: 2.02 MATERIALS A. Pipe: High density polyethylene pipe, type PE3408, PE3608, or PE4710, with minimum ASTM cell classification of PE345364C. 1. Each pipe shall be permanently indent marked with the manufacturer's name, nominal size, pressure rating, relevant ASTM standards, cell classification number and date of manufacture. 2. Pipe Used in Vertical Bore Applications: Comply with ASTM with minimum working pressure rating of 160 psi. a. All piping used for vertical heat exchanger will have factory hot-stamped lengths impressed on the side of the piping indicating the length of the Heat Exchanger at that point. The length stamp shall read zero on one end and the actual Heat Exchanger total length on the other end. b. The vertical heat exchanger pipe will have a factory fused U-bend with lengths long enough to reach grade from the bottom of the bore so no field fusion are required below the header pit. c. All piping used for vertical heat exchanger will ship from the factory pre-charged with air. 3. Other Pipe of 3 Inches Diameter and Larger: Comply with ASTM DR15.5 or ASTM F714, with minimum working pressure rating of 100 psi. 4. Other Pipe 1.25 Inches But Less Than 3 Inches In Diameter (Nominal): Comply with ASTM with minimum working pressure rating of 110 psi. 5. Other Pipe Less Than 1.25 Inches in Diameter (Nominal): Comply with ASTM with minimum working pressure rating of 160 psi. 6. Long Term Hydrostatic Design Basis: 1600 psi at 73 degrees F, when tested in accordance with ASTM 02837; appropriate listing in current edition of PPI TR-4 will constitute evidence of compliance with this requirement; otherwise, submit independent test results. 7. Joints and Fittings: Polyethylene of same type as pipe, of sizes and types suitable for the pipe being used; use only heat fusion or stab-type mechanical fittings that are quality controlled to provide a leak-free union between piping ends that is stronger than the piping itself. Do not use other barbed fittings or hose clamps. a. Electrofusion Type Fittings: Comply with ASTM F b. Butt Fusion Fittings: Comply with ASTM c. Socket Type Fittings: Comply with ASTM d. Where threaded fittings must be used for connection to equipment or dissimilar piping, use fittings and thread sealant compatible and effective with antifreeze used. e. Manifolds: HOPE pipe, joined together with heat fusion, shall be used for all of the main header piping. 8. Manufacturers: a. Any manufacturer listed in PPI TR-4 for the material to be used of 8 GROUND-LOOP HEAT-PUMP PIPING

38 B. Detectable Underground Tape: Magnetic detectable conductor in 2 inch wide rot-resistant plastic tape or mesh, brightly colored, imprinted every 36"with "CAUTION GEOTHERMAL PIPLINE BURIED BELOW" in large letters. C. Backfill for Vertical Boreholes: Thermally enhanced bentonite. 1. Thermally enhanced bentonite grout shall be used to seal and backfill each vertical U-bend well bore of the closed-loop ground heat exchanger to insure proper thermal contact with the earth and to ensure the environmental integrity of each vertical bore column. Once fully set (within 24 hours), the grouting material shall remain in a thick, putty-like, plastic state (moldable) throughout the life of the system and shall not generate heat during the hydration process. a. A bentonite-based two-part, field mixed, high to extreme-high solids material that can be mixed to meet a range of thermal conductivity's from 0.45 to 1.40 Btu/hr-ft- F. It shall have been specifically developed for closed-loop ground-coupled heat pump applications where thermal conductivity in the vertical bore column is critical to system performance. b. The product is to certified by the National Sanitation Foundation International to ANSI/NSF Standard 60, "Drinking Water Treatment Chemical- Health Effects." 2. No chemical polymers or organic matter shall be contained within the grout material. 3. MIXING INSTRUCTIONS (per each unit): a. When mixed according to manufactures instructions, the permeability is below the U.S. Environmental Protection Agency's maximum recommendations of 1 x b. Mix Proportions of water, grout and sand per manufactures requirements. c. Place fresh water in a conventional paddle mixing tank. d. Start mixer and Bentonite Base (Part 1). e. Add silica sand at a moderate rate (in about 4 to 6 minutes) and continue to mix for another 1 to 2 minutes to obtain a consistent mixture. f. Pump with a positive displacement pump (piston pump recommended) through a 1-1/4" inside diameter tremie pipe at a rate of 5 to 15 gallons per minute GROUT MANUFACTURES: A. Geopro-thermal grout select B. Cetco C. Bariod-Barotherm Gold PART 3 EXECUTION 3.01 EXAMINATION AND PREPARATION A. Verify location of existing structures and utilities prior to excavation. B. Verify soil composition and rock depth, if any, before beginning excavation. C. Protect adjacent structures from the effects of excavation. D. Verify that layout dimensions are correct and that available land is sufficient for design. E. Notify Engineer of unsatisfactory conditions. F. The heat exchanger pipe must be connected as indicated on the plans. The header design accounts for balanced flow as well as flushing and purging flow rates. No variations can be made in the circuit hookup or the pipe sizes that are indicated without approval from Architect/Engineer G. The depth of all headers and supply and return piping is indicated on the plans and must be maintained. H. Do not proceed with installation until unsatisfactory conditions have been corrected. I. Coordinate work with site grading, site backfilling, and foundation construction EXCAVATION A. Excavate in accordance with requirements of authorities having jurisdiction of 8 GROUND-LOOP HEAT-PUMP PIPING

39 B. The Contractor shall do all excavating, backfilling, shoring, bailing and pumping for the installation of his work and perform necessary grading to prevent surface water from flowing into trenches or other excavations. 1. Sewer lines shall not be used for draining trenches. C. Vertical Boreholes: Drill to depths required. 1. Use sufficient quantities of water during drilling process to eliminate dust escaping from the bore hole. 2. The vertical boreholes will be drilled to a depth that allows complete insertion of the pipe used in heat exchanger to its specified depth. 3. The maximum borehole diameter shall be six inches. If a larger diameter is required, it must be approved by Architect/Engineer 4. Piping: Assemble heat exchanger piping and test before installation. D. Trenches: Excavate trenches for piping to lines and grades shown on drawings. 1. Minimize over-excavation; fill over-excavated areas with backfill or excavated materials. 2. Only material suitable for backfilling shall be piled a sufficient distance from banks of trenches to avoid overloading. 3. Excavate to accommodate grade changes. 4. Sheathing and shoring shall be done as necessary for protection of work and personnel safety. 5. Unless otherwise indicated, excavation shall be open cut except for short sections. 6. Maintain trenches free of debris, material, and obstructions that may damage pipe. 7. Piping: Assemble heat exchanger piping and test before backfilling POLYETHYLENE PIPING A. Join piping and fittings using heat fusion or electrofusion; do not use solvents, adhesives, or mechanical fittings. 1. During Installation the socket shall be cleaned with individual alcohol wipes prior to heating for fusion. Rags where reuse is permitted is strictly prohibited. B. Provide flanges or unions to connect heat exchanger piping to equipment or piping of different type; locate all transitions between piping of different types inside the building or otherwise accessible (i.e. above grade). C. Keep dirt, water, and debris out of pipe assemblies; cap or plug open ends until connected to adjacent piping. D. Do not bend piping to shorter radius than recommended by pipe manufacturer; do not kink piping; use elbow or other fittings for sharp bends. E. Partially backfill radius bends in narrow trenches by hand to ensure that piping is properly supported and to prevent kinking. F. Confirm that factory fused U-bend pipe used in vertical heat exchanger has retained the pre-charge from the factory. If pre-charge is not present re-test. G. Test piping to be installed in boreholes after assembly but before installation in boreholes; re-cap tested assemblies before installation. H. Test piping to be installed in trenches after installation but before backfilling. I. If necessary, an iron (sinker) bar can be attached at the base of each vertical heat exchanger piping end to overcome bouncy. This iron bar will have all sharp edges adequately taped to avoid scaring and/or cutting of the polyethylene pipe. The entire piping assembly is inserted to the specified depth in the borehole J. The vertical heat exchanger pipe ends will be sealed with fusion caps or tape prior to insertion into the bore hole. K. Reasonable care shall be taken to ensure that the geothermal loop field pipe is not crushed, kinked, or cut. Should any pipe be damaged, the damaged section shall be cut out and the pipe reconnected by heat fusion of 8 GROUND-LOOP HEAT-PUMP PIPING