SECTION HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

Transcription

1 PART1 GENERAL 1.01 SECTION INCLUDES A. Equipment support bases. B. Vibration isolators RELATED REQUIREMENTS SECTION HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS A. Section Cast-in-Place Concrete REFERENCE STANDARDS A. ASCE 7 - Minimum Design Loads for Buildings and Other Structures; B. ASH RAE (HVACA)- ASH RAE Handbook- HVAC Applications; American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.; C. FEMA 412 -Installing Seismic Restraints for Mechanical Equipment; D. FEMA Installing Seismic Restraints for Electrical Equipment; E. FEMA 414- Installing Seismic Restraints for Duct and Pipe; F. FEMA E-74- Reducing the Risks of Nonstructural Earthquake Damage: A Practical Guide; G. las AC172- Accreditation Criteria for Fabricator Inspection Programs for Structural Steel; International Accreditation Service, Inc.; H. SMACNA (SRM) -Seismic Duct Restraint Manual; Sheet Metal and Air Conditioning Contractors' National Association; SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: 1. Provide manufacturer's product literature documenting compliance with PART 2 PRODUCTS. 2. Include seismic rating documentation for each isolator and restraint component accounting for horizontal, vertical, and combined loads. C. Shop Drawings: 1. Provide schedule of vibration isolator type with location and load on each. 2. Fully dimensioned fabrication drawings and installation details for vibration isolation bases, member sizes, attachments to isolators, and supported equipment. 3. Include auxiliary motor slide bases and rails, base weights, inertia bases, concrete weights, equipment static loads, support points, vibration isolators, and detailed layout of isolator location and orientation with static and dynamic load on each isolator. 4. Include selections from prescriptive design tables that indicate compliance with the applicable building code and the vibration isolator manufacturer's requirements. 5. Clearly indicate the load and capacity assumptions selected. Include copies of any calculations. 6. Include the calculations that indicate compliance with the applicable building code for seismic controls and the vibration isolator manufacturer's requirements QUALITY ASSURANCE A. Perform design and installation in accordance with applicable codes. PART 2 PRODUCTS 2.01 MANUFACTURERS A., Kinetics Noise Control, Inc: HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

2 B. Mason Industries: C. Vibration Eliminator Company, Inc: PERFORMANCE REQUIREMENTS A. General: 1. All vibration isolators, base frames and inertia bases to conform to all uniform deflection and stability requirements under all operating loads. 2. Steel springs to function without undue stress or overloading. 3. Steel springs to operate in the linear portion of the load versus deflection curve over deflection range of not less than 50 percent above specified deflection. 4. Lateral to vertical stiffness ratio to not exceed 0.08 with spring deflection at minimum 75 percent of specified deflection. 5. All equipment mounted on vibration isolated bases to have minimum operating clearance of 2 inches (50 mm) between the base and floor or support beneath unless noted otherwise EQUIPMENT SUPPORT BASES A. Structural Bases: 1. Construction: Engineered, structural steel frames with welded brackets for side mounting of the isolators. 2. Frames: Square, rectangular or T-shaped. 3. Design: Sufficiently rigid to prevent misalignment or undue stress on machine, and to transmit design loads to isolators and snubbers. 4. Applications: Adjustable motor slide rails for centrifugal fans. B. Concrete Inertia Bases: 1. Construction: Engineered, steel forms, with integrated isolator brackets and anchor bolts, welded or tied reinforcing bars running both ways in a single layer. 2. Size: 6 inches (152 mm) minimum depth and sized to accommodate elbow supports. 3. Mass: Minimum of 1.5 times weight of isolated equipment. 4. Connecting Point: Reinforced to connect isolators and snubbers to base including template and fastening devices for equipment. 5. Concrete: Filled on site with minimum 3000 psi (20 mpa) concrete. 6. Applications: Adjustable motor slide rails for centrifugal fans VIBRATION ISOLATORS A. Non-Seismic Type: 1. All Elastomeric-Fiber Glass Pads: a. Configuration: Flat or molded. b. Thickness: 0.25 inch (6 mm) minimum. c. Assembly: Single or multiple layers using bonded, galvanized sheet metal separation plate between each layer with load plate providing evenly distributed load over pad surface. 2. Elastomeric Mounts: a. Material: Oil, ozone, and oxidant resistant compounds. b. Assembly: Encapsulated load transfer plate bolted to equipment and base plate with anchor hole bolted to supporting structure. 3. Steel Springs: a. Assembly: Freestanding, laterally stable without housing. b. Leveling Device: Rigidly connected to equipment or frame. 4. Restrained Steel Springs: a. Housing: Rigid blocking during rigging prevents equipment installed and operating height from changing during temporary weight reduction. b. Equipment Wind Loading: Adequate means for fastening isolator top to equipment and isolator base plate to supporting structure HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

3 5. Elastomeric Hangers: a. Housing: Steel construction containing elastomeric isolation element to prevent rod contact with housing and short-circuiting of isolating function. b. Incorporate steel load distribution plate sandwiching elastomeric element to housing. 6. Spring Hanger: a. Housing: Steel construction containing stable steel spring and integral elastomeric element preventing metal to metal contact. b. Bottom Opening: Sized to allow plus/minus 15 degrees rod misalignment. 7. Combination Elastomeric-Spring Hanger: a. Housing: Steel construction containing stable steel spring with elastomeric element in series isolating upper connection of hanger box to building structure. b. Bottom Opening: Sized to allow plus/minus 15 degrees rod misalignment. 8. Thrust Restraints: a. Housing: Steel construction containing stable steel spring and integral elastomeric element installed in pairs to resist air pressure thrusts. b. Bottom Openings: Sized to allow plus/minus 15 degrees rod misalignment. B. Seismic Type: 1. Coil Springs Consisting of Single Elements: a. Housing: Manufactured from cast iron material. b. Ductile Material: Designed and rated for seismic applications. c. Spring: Restrained by housing without significant degradation of vibration isolation capabilities during normal equipment operating conditions. d. Resilient Snubbing Grommet System: Incorporated and designed with clearances of no more than 0.25 inch (6 mm) in any direction preventing direct metal-to-metal contact between supported member and fixed restraint housing. e. Resilient Pad: Located in series with spring. f. Coil Springs: Color coded elements to have a lateral stiffness greater than 0.8 times the rated vertical stiffness with 50 percent overload capacity. g. Finish: Suitable for the application. 2. All Directional Elastomeric: a. Material: Molded from oil, ozone, and oxidant resistant compounds. b. Operating Parameters: Designed to operate within the isolator strain limits providing maximum performance and service life. c. Attachment Method: Encapsulated load transfer plate bolted to equipment and base plate with anchor hole bolted to supporting structure. d. Rating: Cast iron and aluminum housings rated for seismic restraint applications. e. Minimum Operating Static Deflections: Deflections indicated in project documents are not to exceed published load capacities SEISMIC SNUBBER ASSEMBLIES A. Comply with: 1. ASHRAE Handbook- HVAC Applications 2. FEMA FEMA FEMA FEMA E SMACNA- Seismic Duct Restraint Manual B. All Directional External: 1. Application: Minimum three (3) snubbers are required for each equipment installation, oriented properly to restrain isolated equipment in all directions. 2. Construction: Interlocking steel construction attached to the building structure and equipment in a manner consistent with anticipated design loads HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

4 3. Performance: Equipment movement at each snubber location limited to a maximum of 0.25 inches (6 mm) in any direction without significantly degrading the vibration isolation capability of the isolator during normal operating conditions. 4. Resilient Pad: Minimum 0.25 inch (6 mm) thick cushions any impact and prevents metal-to-metal contact. C. Lateral External: 1. Application: Minimum three (3) snubbers are required for each stable equipment installation, oriented properly to restrain isolated equipment in all lateral directions where uplift forces are zero or addressed by other restraints. 2. Construction: Steel construction attached to the building structure and equipment in a manner consistent with anticipated design loads. 3. Performance: Equipment movement at each snubber location limited to a maximum of 0.25 inches (6 mm) in any direction without significantly degrading the vibration isolation capability of the isolator during normal operating conditions. 4. Resilient Pad: Minimum 0.25 inch (6 mm) thick cushions any impact and prevents metal-to-metal contact. D. Omni Directional External: 1. Application: Minimum four (4) snubbers are required for each stable equipment installation, oriented properly to restrain isolated equipment in all lateral directions. 2. Construction: Steel construction attached to the building structure and equipment in a manner consistent with anticipated design loads. 3. Performance: Equipment movement at each snubber location limited to a maximum of 0.25 inches (6 mm) in any direction without significantly degrading the vibration isolation capability of the isolator during normal operating conditions. 4. Resilient Pad: Minimum 0.25 inch (6 mm) thick cushions any impact and prevents metal-to-metal contact. E. Horizontal Single Axis External: 1. Application: Minimum four (4) snubbers are required for each stable equipment installation, oriented properly to restrain isolated equipment in all lateral directions where uplift forces are zero or addressed by other restraints. 2. Construction: Steel construction attached to the building structure and equipment in a manner consistent with anticipated design loads. 3. Performance: Equipment movement at each snubber location limited to a maximum of 0.25 inches (6 mm) in any direction without significantly degrading the vibration isolation capability of the isolator during normal operating conditions. 4. Resilient Pad: Minimum 0.25 inch (6 mm) thick cushions any impact and prevents metal-to-metal contact SEISMIC RESTRAINTS FOR SUSPENDED COMPONENTS AND EQUIPMENT A. Comply with: 1. ASHRAE Handbook- HVAC Applications 2. FEMA FEMA FEMA FEMA E SMACNA- Seismic Duct Restraint Manual B. Cable Restraints: 1. Wire Rope: Steel wire strand cables sized to resist seismic loads in all lateral directions. 2. Protective Thimbles: Eliminates potential for dynamic cable wear and strand breakage. 3. Size: Based on the lesser of cable capacity or anchor load taking into account bracket geometry. 4. Connections: Bid No DEC14 November 10, HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

5 a. Use overlapping wire rope U clips, cable clamping bolts, swaged sleeves or seismically rated tool-less wedge insert lock connectors. b. Internally brace clevis hanger bracket cross bolt to prevent deformation. 5. Vertical Suspension Rods: Attach required bracing of sufficient strength to prevent rod buckling from vertical compression forces utilizing series of attachment clips. C. Rigid Restraints: 1. Structural Element: Sized to resist seismic loads in all lateral directions and carry both compressive and tensile loading. 2. Size: Based on the lesser of cable capacity or anchor load taking into account bracket geometry. 3. Connections: Internally brace clevis hanger bracket cross bolt to prevent deformation. 4. Static Support System: Anchorage capable of carrying additional tension loads generated by the vertical component of the rigid brace compression which is additive to any static load requirements on the system. 5. Vertical Suspension Rods: Attached required bracing of sufficient strength to prevent rod buckling from vertical compression forces utilizing series of attachment clips ROOF CURBS A. Vibration Isolation Curbs: 1. Non-Seismic Curb Rail: a. Location: Between existing roof curb and rooftop equipment. b. Construction: Aluminum. c. Integral vibration isolation to conform to requirements of this section. d. Weather exposed components consist of corrosion resistant materials. 2. Non-Seismic Curb: a. Location: Between structure and rooftop equipment. b. Construction: Aluminum. c. Integral vibration isolation to conform to requirements of this section. d. Weather exposed components consist of corrosion resistant materials. 3. Seismic Curb: a. Location: Between structure and rooftop equipment. b. Construction: Steel. c. Integral vibration isolation to conform to requirements of this section. d. Snubbers consist of minimum 0.25 inch (6 mm) thick resilient pads to avoid metal-to-metal contact without compromising vibration isolating capabilities. e. Weather exposed components consist of corrosion resistant materials. B. Seismic Type Non-Isolated Curb and Fabricated Equipment Piers: 1. Location: Between structure and rooftop equipment. 2. Construction: Steel. 3. Weather exposed components consist of corrosion resistant materials. PART 3 EXECUTION 3.01 INSTALLATION- GENERAL A. Install in accordance with manufacturer's instructions. B. Bases: 1. Adjust equipment level. C. On closed spring isolators, adjust so side stabilizers are clear under normal operating conditions. D. Prior to making piping connections to equipment with operating weights substantially different from installed weights, block up equipment with temporary shims to final height. When full load is applied, adjust isolators to load to allow shim removal HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

6 E. Provide pairs of horizontal limit springs on fans with more than 6.0 inches WC (1.5 kpa) static pressure, and on hanger supported, horizontally mounted axial fans. F. Support piping connections to equipment mounted on isolators using isolators or resilient hangers for scheduled distance. 1. Up to 4 Inches (1 00 mm) Pipe Size: First three points of support to 8 Inches (125 to 200 mm) Pipe Size: First four points of support inches (250 mm) Pipe Size and Over: First six points of support. 4. Select three hangers closest to vibration source for minimum 1.0 inch (25 mm) static deflection or static deflection of isolated equipment. Select remaining isolators for minimum 1.0 inch (25 mm) static deflection or 1/2 static deflection of isolated equipment INSTALLATION - SEISMIC A. Comply with: 1. ASHRAE Handbook- HVAC Applications 2. FEMA FEMA FEMA FEMA E74 6. SMACNA- Seismic Duct Restraint Manual B. Seismic Snubbers: 1. Provide on all isolated equipment, piping and ductwork. 2. Provide minimum of four seismic snubbers located close to isolators. 3. Snub equipment designated for post-disaster use to 0.05 inch (1.5 mm) maximum clearance. 4. Snub all other equipment between 0.15 inch (4 mm) and 0.25 inch (7 mm) clearance. C. Floor and Base-Mounted Equipment, Vibration Isolated Equipment and associated Vibration and Seismic Controls for Connections: 1. Install equipment anchorage items designed to resist seismic design force in any direction. 2. Install vibration and seismic controls designed to include base and isolator requirements. 3. Provide flexible connections between equipment and interconnected piping. 4. Provide isolators and restraints designed for amplified code forces per ASCE 7 and with demonstrated ability to resist required forces including gravity, operational and seismic forces. 5. Where equipment is not designed to be point loaded, provide base capable of transferring gravity and seismic demands from equipment to isolator base plate anchorage. 6. Where concrete floor thickness is less than required for expansion anchor installation, install through bolt in lieu of expansion anchor. 7. Where timber/wood floor or other substrate is inadequate for installation of lag bolts, screws or other mechanical fasteners, install supplemental framing or blocking to transfer loads to structural elements. D. Suspended Mechanical Equipment: 1. Provide supports and bracing to resist seismic design force in any direction. 2. Provide flexible connections between equipment and interconnected piping. 3. Brace equipment hung from spring mounts using cable or other bracing that will not transmit vibration to the structure. 4. Use of proprietary restraint systems with a certificate of compliance, verified and listed by an accredited inspection body is acceptable (pending shop drawing approval), as an alternative to project specific seismic bracing design. E. Wall mounted Mechanical Equipment: 1. Provide support and bracing to resist seismic design force in any direction. 2. Install backing plates or blocking as required to deliver load to primary wall framing members. Bid No DEC14 November 10, HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

7 3. Anchoring to gypsum wallboard, plaster or other wall finish that has not been engineered to resist imposed loads is not permitted. F. Piping: 1. Provide seismic bracing in accordance ASC Provide supports, braces, and anchors to resist gravity and seismic design forces. 3. Provide flexible connections between floor mounted equipment and suspended piping; between unbraced piping and restrained suspended items; as required for thermal movement; at building separations and seismic joints; and wherever relative differential movements could damage pipe in an earthquake. 4. Brace resiliently supported pipe with cable bracing or alternate means designed to prevent transmission of vibrations and noise to the structure. 5. Brace every run 5.0 feet (1.5 m) or more in length with two transverse and one longitudinal bracing locations. 6. Pipes and Connections Constructed of Ductile Materials (copper, ductile iron, steel or aluminum and brazed, welded or screwed connections): a. Provide transverse bracing at spacing not more than 40.0 feet (12.2 m) on center. b. Provide longitudinal bracing at spacing not more than 80.0 feet (24.4 m) on center. 7. Pipes and Connections Constructed of Non Ductile Materials (cast iron, no-hub, plastic or non-ul listed grooved coupling pipe): a. Provide transverse bracing at spacing not more than 20.0 feet (6.1 m) on center. b. Provide longitudinal bracing at spacing not more than 40.0 feet (12.2 m) on center. 8. Provide lateral restraint for risers at not more than 30 feet (9.1 m) on center or as required for horizontal runs, whichever is less. G. Ductwork: 1. Provide seismic bracing for ducts with cross sectional area greater than 6 sq ft (0.56 sq m) (independent of duct contents). 2. Provide seismic bracing for all ducts containing hazardous materials. 3. Provide supports, braces, and anchors to resist gravity and seismic design forces. 4. Install ducts and duct risers designed to accommodate interstory drift. 5. Independently support in-line devices weighing more than 20 pounds (9.07 kg). 6. Independently support and brace all in-line devices weighing more than 75 pounds (34 kg). 7. Provide unbraced piping attached to braced in-line equipment with adequate flexibility to accommodate differential displacements. 8. Positively attach dampers, louvers, diffusers and similar appurtenances to ductwork with mechanical fasteners. 9. Install duct supports designed to resist not less than 150 percent of the duct weight. 10. The use of power driven fasteners is prohibited in the hanging of ducts weighing over 10 pounds (4.54 kg) per lineal foot (m) for seismic design categories D, E, and F. 11. Use of proprietary restraint systems with a certificate of compliance, verified and listed by an las AC172 accredited inspection body or otherwise accepted by applicable codes is acceptable (pending shop drawing approval), as an alternative to project specific seismic bracing design. H. Tanks: 1. Install tank anchorage, tank legs and/or supporting structure designed to resist design force. 2. Provide flexible connections between tank and interconnected piping FIELD QUALITY CONTROL A. Inspect isolated equipment after installation and submit report. Include static deflections. END OF SECTION Bid No DEC14 November 10, HVAC PIPING AND EQUIPMENT SEISMIC CONTROLS

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9 PART1 GENERAL 1.01 SECTION INCLUDES SECTION TESTING, ADJUSTING, AND BALANCING FOR HVAC A. Testing, adjustment, and balancing of air systems. B. Commissioning activities RELATED REQUIREMENTS A. Section General Commissioning Requirements: Commissioning requirements that apply to all types of work. B. Section Commissioning of HVAC REFERENCE STANDARDS A. AABC MN-1 - AABC National Standards for Total System Balance; Associated Air Balance Council; B. ASHRAE Std 111 -Practices for Measurement, Testing, Adjusting and Balancing of Building Heating, Ventilation, Air-Conditioning, and Refrigeration Systems; American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.; C. NEBB (TAB)- Procedural Standards for Testing Adjusting Balancing of Environmental Systems; National Environmental Balancing Bureau; 2005, Seventh Edition. D. SMACNA HVAC Systems Testing, Adjusting, and Balancing; Sheet Metal and Air Conditioning Contractors' National Association; SUBMITTALS A. See Section Administrative Requirements, 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. 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. Discussion of what notations and markings will be made on the duct and piping drawings during the process. d. Final test report forms to be used. e. Procedures for formal deficiency reports, including scope, frequency and distribution. 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 Architect 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 both 1-P (inch-pound) and Sl (metric) units. Bid No DEC14 November 10, TESTING, ADJUSTING, AND BALANCING FOR HVAC

10 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. ASHRAE 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 Maintain at least one copy of the standard to be used at project site at all times. 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. 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 TESTING, ADJUSTING, AND BALANCING FOR HVAC

11 3.03 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. B. Provide instruments required for testing, adjusting, and balancing operations. Make instruments available to Architect to facilitate spot checks during testing. C. Provide additional balancing devices as required 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. After adjustment, take measurements to verify balance has not been disrupted or that such disruption has been rectified. E. 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. Make air quantity measurements in ducts by Pitot tube traverse of entire cross sectional area of duct. B. Measure air quantities at air inlets and outlets. C. Adjust distribution system to obtain uniform space temperatures free from objectionable drafts and noise. 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. Provide system schematic with required and actual air quantities recorded at each outlet or inlet. G. 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. H. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers for design conditions. I. Measure temperature conditions across outside air, return air, and exhaust dampers to check leakage. J. Measure building static pressure and adjust supply, return, and exhaust air systems to provide required relationship between each to maintain approximately 0.05 inches (12.5 Pa) positive static pressure near the building entries TESTING, ADJUSTING, AND BALANCING FOR HVAC

12 3.07 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. Adjust systems to provide specified pressure drops and flows through heat transfer elements prior to thermal testing. Perform balancing by measurement of temperature differential in conjunction with air balancing COMMISSIONING A. See Sections and for additional requirements. B. Perform prerequisites prior to starting commissioning activities. C. Fill out Prefunctional Checklists for: 1. Air side systems. 2. Water side systems. D. Furnish to the Commissioning Authority, upon request, any data gathered but not shown in the final TAB report. E. Re-check minimum outdoor air intake flows and maximum and intermediate total airflow rates for_ percent of the air handlers plus a random sample equivalent to percent of the final TAB report data as directed by Commissioning Authority. 1. Original TAB agency shall execute the re-checks, witnessed by the Commissioning Authority. 2. Use the same test instruments as used in the original TAB work. 3. Failure of more than 10 percent of the re-checked items of a given system shall result in the rejection of the system TAB report; rebalance the system, provide a new system TAB report, and repeat random re-checks. 4. For purposes of re-check, failure is defined as follows: a. Air Flow of Supply and Return: Deviation of more than 10 percent of instrument reading. b. Minimum Outside Air Flow: Deviation of more than 20 percent of instrument reading; for inlet vane or VFD OSA compensation system using linear proportional control, deviation of more than 30 percent at intermediate supply flow. c. Temperatures: Deviation of more than one degree F (0.5 degree C). d. Air and Water Pressures: Deviation of more than 10 percent of full scale of test instrument reading. e. Sound Pressures: Deviation of more than 3 decibels, with consideration for variations in background noise. 5. For purposes of re-check, a whole system is defined as one in which inaccuracies will have little or no impact on connected systems; for example, the air distribution system served by one air handler or the hydronic chilled water supply system served by a chiller or the condenser water system. F. In the presence of the Commissioning Authority, verify that: 1. Final settings of all valves, splitters, dampers and other adjustment devices have been permanently marked. 2. The air system is being controlled to the lowest possible static pressure while still meeting design loads, less diversity; this shall include a review of TAB methods, established control setpoints, and physical verification of at least one leg from fan to diffuser having all balancing dampers wide open and that during full cooling of all terminal units taking off downstream of the static pressure sensor, the terminal unit on the critical leg has its damper 90 percent or more open. 3. The water system is being controlled to the lowest possible pressure while still meeting design loads, less diversity; this shall include a review of TAB methods, established control TESTING, ADJUSTING, AND BALANCING FOR HVAC Bid No DEC14 November 10,

13 3.09 SCOPE setpoints, and physical verification of at least one leg from the pump to the coil having all balancing valves wide open and that during full cooling the cooling coil valve of that leg is 90 percent or more open. A. Test, adjust, and balance the following: 1. HVAC Pumps 2. Air Handling Units 3. Fans 4. Air Inlets and Outlets 3.10 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 6. Service factor 7. Starter size, rating, heater elements 8. Sheave Make/Size/Bore B. V-Belt Drives: 1. Identification/location 2. Required driven RPM 3. Driven sheave, diameter and RPM 4. Belt, size and quantity 5. Motor sheave diameter and RPM 6. Center to center distance, maximum, minimum, and actual C. Pumps: 1. Identification/number 2. Manufacturer 3. Size/model 4. Impeller 5. Service 6. Design flow rate, pressure drop, BHP 7. Actual flow rate, pressure drop, BHP 8. Discharge pressure 9. Suction pressure 10. Total operating head pressure 11. Shut off, discharge and suction pressures 12. Shut off, total head pressure D. Air Moving Equipment: 1. Location 2. Manufacturer 3. Model number 4. Serial number 5. Arrangement/Class/Discharge 6. Air flow, specified and actual 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 TESTING, ADJUSTING, AND BALANCING FOR HVAC

14 12. Sheave Make/Size/Bore 13. Number of Belts/Make/Size 14. Fan RPM E. 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 8. Return air temperature 9. Outside air temperature 10. Required mixed air temperature 11. Actual mixed air temperature 12. Design outside/return air ratio 13. Actual outside/return air ratio F. Exhaust Fans: 1. Location 2. Manufacturer 3. Model number 4. Serial number 5. Air flow, specified and actual 6. Total static pressure (total external), specified and actual 7. Inlet pressure 8. Discharge pressure 9. Sheave Make/Size/Bore 10. Number of Belts/Make/Size 11. Fan RPM G. 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 9. Air temperature H. Air Distribution Tests: 1. Air terminal number 2. Room number/location 3. Terminal type 4. Terminal size 5. Area factor 6. Design air flow 7. Test (final) air flow 8. Percent of design air flow END OF SECTION TESTING, ADJUSTING, AND BALANCING FOR HVAC Bid No DEC14 November 10,

15 PART1 GENERAL 1.01 SECTION INCLUDES A. Duct insulation RELATED REQUIREMENTS 1.03 REFERENCE STANDARDS SECTION DUCT INSULATION A. ASTM C612- Standard Specification for Mineral Fiber Block and Board Thermal Insulation; B. ASTM E84- Standard Test Method for Surface Burning Characteristics of Building Materials; C. NFPA Standard Method of Test of Surface Burning Characteristics of Building Materials; National Fire Protection Association; D. UL 723- Standard for Test for Surface Burning Characteristics of Building Materials; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Administrative Requirements, 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 necessary to ensure acceptable workmanship and that installation standards will be achieved 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, with minimum three years of experience 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 REQUIREMENTS FOR ALL PRODUCTS OF THIS SECTION A. Surface Burning Characteristics: Flame spread/smoke developed index of 25/50, maximum, when tested in accordance with ASTM E84, NFPA 255, or UL GLASS FIBER, RIGID A. Insulation: ASTM C612; rigid, noncombustible blanket. PART 3 EXECUTION 3.01 EXAMINATION A. Verify that ducts have been tested before applying insulation materials DUCT INSULATION

16 B. Verify that surfaces are clean, foreign material removed, and dry INSTALLATION A. Install in accordance with manufacturer's instructions. B. Install in accordance with NAIMA National Insulation Standards. END OF SECTION DUCT INSULATION

17 PART1 GENERAL 1.01 SECTION INCLUDES A. Thermostats. B. Humidistats. C. Automatic dampers. D. Damper operators. E. Miscellaneous accessories RELATED REQUIREMENTS SECTION INSTRUMENTATION AND CONTROL DEVICES FOR HVAC A. Section Hydronic Piping: Installation of control valves, flow switches, temperature sensor sockets, gage taps. B. Section Air Duct Accessories: Installation of automatic dampers. C. Section Direct-Digital Control System for HVAC. D. Section Sequence of Operations for HVAC Controls. E. Section Wiring Devices: Elevation of exposed components. F. Section Equipment Wiring: Electrical characteristics and wiring connections REFERENCE STANDARDS A. AMCA 500-D- Laboratory Methods for Testing Dampers for Rating; Air Movement and Control Association International, Inc.; B. NFPA 90A- Standard for the Installation of Air-Conditioning and Ventilation Systems; National Fire Protection Association; ADMINISTRATIVE REQUIREMENTS A. Preinstallation Meeting: Conduct a preinstallation meeting one week before starting work of this section; require attendance by all affected installers SUBMITTALS A. See Section Administrative Requirements, 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. E. Maintenance Materials: Furnish the following for Owner's use in maintenance of project. 1. See Section Product Requirements, for additional provisions. 2. Extra Thermostats and Other Exposed Sensors: Two of each type QUALITY ASSURANCE A. Designer Qualifications: Design system under direct supervision of a Professional Engineer experienced in design of this work and licensed at Missouri. B. Manufacturer Qualifications: Company specializing in manufacturing the Products specified in this section with minimum three years documented experience INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

18 1.07 WARRANTY A. See Section Closeout Submittals, for additional warranty requirements. PART 2 PRODUCTS 2.01 MANUFACTURERS A. lnvensys EQUIPMENT GENERAL A. Products Requiring Electrical Connection: Listed and classified by Underwriters Laboratories Inc., as suitable for the purpose specified and indicated DAMPERS A. Performance: Test in accordance with AMCA 500-D. B. Frames: Galvanized steel, welded or riveted with corner reinforcement, minimum 12 gage, inch (2.66 mm). C. Blade Seals: Synthetic elastomeric inflatable mechanically attached, field replaceable. D. Leakage: Less than one percent based on approach velocity of 2000 ft/min (10m/sec) and 4 inches wg (1.0 kpa) DAMPER OPERATORS A. General: Provide smooth proportional control with sufficient power for air velocities 20 percent greater than maximum design velocity and to provide tight seal against maximum system pressures. Provide spring return for two position control and for fail safe operation HUMIDISTATS A. Room Humidistats: 1. Wall mounted, proportioning type. 2. Throttling range: Adjustable 2 percent relative humidity. 3. Operating range: 30 to 80 percent. 4. Maximum temperature: 110 degrees F (43 degrees C) THERMOSTATS PART 3 EXECUTION 3.01 EXAMINATION A. Verify existing conditions before starting work. B. Verify that systems are ready to receive work. 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 INSTALLATION A. Install in accordance with manufacturer's instructions. B. Check and verify location of thermostats with plans and room details before installation. Locate 60 inches (1500 mm) above floor. Align with lighting switches and humidistats. Refer to Section C. Provide conduit and electrical wiring in accordance with Section Electrical material and installation shall be in accordance with appropriate requirements of Division 26. END OF SECTION INSTRUMENTATION AND CONTROL DEVICES FOR HVAC

19 PART 1 - GENERAL 1.01 RELATED DOCUMENTS: SECTION ELECTRIC CONTROL SYSTEMS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification sections, apply to work of this section DESCRIPTION OF WORK: A. The work specified in this section, consosting of all HVAC controls and interlock wiring shall be performed by the Owner's current building automation and control (BAS) contractor. The cost for the complete scope of control work shall be included in the prime contractor's total bid amount. B. The BAS contractor shall prepare and submit equipment shop drawings, wiring diagrams and typewritten sequence of operation description for each HVAC system including ground source heat pump units, pumps, energy recovery units and other systems as specified in the contrat documents. Submittals shall be provided to the Architect prior to performing any field control work as specified elsewhere in this section. C. All BAS siftware, hardware and associated programming integration with the existing BAS system required to achieve the specified sequence of operation(s), for modifying existing controls systems and control of new systems incorporated under this project shall be provided by the BAS contractor. D. Extent of electric control systems work required by this section is indicated on drawings and schedules, and by requirements of this section. 1. Control sequences are specified in Division 23 Section "Sequence of Operation". E. Refer to Division-26 sections for the following work; not work of this section. 1. Power supply wiring for power source to power connection on controls and/or unit control panels. Include starters, disconnects, and required electrical devices, except where specified as furnished, or factory-installed, by manufacturer. F. Provide the following electrical work as work of this section, complying with requirements of Division-16 sections: 1. Control wiring between field-installed controls, indicating devices, and unit control panels. G. Provide assistance to the mechanical contractoras required to conduct system(s) startup, testing and balancing and commissioning SUBMITTALS: A. Product Data: Submit manufacturer's technical product data for each control device furnished, indicating dimensions, capacities, performance characteristics, electrical characteristics, finishes of materials, and including installation instructions and start-up instructions. B. Shop Drawings: Refer to Division-23 section "Sequence of Operation" for shop drawings; not work of this section. C. Shop Drawings: Submit shop drawings for each electric control system, containing the following information: 1. Schematic flow diagram of system showing fans, pumps, coils, dampers, valves, and control devices. 2. Label each control device with setting or adjustable range of control. 3. Indicate all required electrical wiring. Clearly differentiate between portions of wiring that are factory- installed and portions to be field-installed. 4. Provide details of faces of control panels, including controls, instruments, and labeling. 5. Include verbal description of sequence of operation. D. Maintenance Data: Submit six (6) copies of BAS operation and maintenance instruction manuals to the Owner's designated representativefor use as a training reference during the ELECTRIC CONTROL SYSTEMS

20 pre-scheduled training sessions and for future reference. Manuals shall be assembled in durable hard cover, three-ring binder notebooks containing a main index page followed by divider sheets with labeled tabs preceeding each section listed in the main index. The BAS O&M manuals shall be prepared as separate submittal documents in addion to the other O&M manuals required for submission by the prime contractor. All BAS submittals shall be processed through the prime contractor DELIVERY, STORAGE, AND HANDLING: A. Provide factory shipping cartons for each piece of equipment, and control device. Maintain cartons through shipping, storage and handling as required to prevent equipment damage, and to eliminate dirt and moisture from equipment. Store equipment and materials inside and protected from weather. PART 2 - PRODUCTS 2.01 ACCEPTABLE MANUFACTURERS: A. Manufacturer: Subject to compliance with requirements, provide electric control systems of one of the following: 1. Schneider Electric 1/A Series by the C&C Group 2.02 MATERIALS AND EQUIPMENT: A. General: Provide electric control products in sizes and capacities indicated, consisting of thermostats, sensors, controllers, and other components as required for a complete installation. Except as otherwise indicated, provide manufacturer's standard control system components as indicated by published product information, designed and constructed as recommended by manufacturer. Provide electric control systems with following functional and construction features as indicated. B. Room Thermostats: Provide room thermostats with readily-accessible adjustment devices and dead band, as follows. 1. Thermostats: Programmable, electronic with digital readout. 2. Changeover: Manual or Automatic (field set for automatic changeover). 3. Fan Switch: On-Auto. 4. Minimum compressor off time set at 4 minutes FOR HVAC EQUIPMENT AND SYSTEMS OPERATING SEQUENCE REFER TO SPECIFICATION SECTION "SEQUENCE OF OPERATION" AND THE DRAWINGS. PART 3- EXECUTION 3.01 INSPECTION: A. Examine areas and conditions under which electric control systems are to be installed. Do not proceed with work until unsatisfactory conditions have been corrected in manner acceptable to Installer INSTALLATION OF ELECTRIC CONTROL SYSTEMS: A. General: Install systems and materials in accordance with manufacturer's instructions and roughing-in drawings, and details on drawings. Install electrical components and use electrical products complying with requirements of applicable Division-26 sections of these specifications. Mount controllers at convenient locations and heights. B. Control Wiring: The term "control wiring" is defined to include providing of wire, conduit and miscellaneous materials as required for mounting and connecting electric control devices. C. Wiring System: Install complete control wiring system for electric control systems. Conceal wiring except in mechanical rooms and areas where other conduit and piping are exposed. Provide multi- conductor instrument harness (bundle) in place of single conductors where number of conductors can be run along common path. Fasten flexible conductors bridging cabinets and doors, neatly along hinge side, and protect against abrasion. Tie and support conductors neatly. Cabling above accessible ceilings may be installed as plenum rated cable ELECTRIC CONTROL SYSTEMS

21 D. Number-code or color-code conductors, excluding those used for local individual room controls, appropriately for future identification and servicing of control system. E. Reset Limit Controls: Install manual-reset limit controls to be independent of power controllers; automatic duct heater resets may, at Contractor's option, be installed in interlock circuit of power controllers. F. Unit-Mounted Equipment: Where control devices are indicated to be unit-mounted, ship electric relays, electric switches, valves, dampers, and damper motors to unit manufacturer for mounting and wiring at factory ADJUSTING AND CLEANING: A. Start-Up: Start-up, test, and adjust electric control systems in presence of manufacturer's authorized representative. Demonstrate compliance with requirements. Replace damaged or malfunctioning controls and equipment. B. Cleaning: Clean factory-finished surfaces. Repair any marred or scratched surfaces with manufacturer's touch-up paint. C. Final Adjustment: After completion of installation, adjust thermostats, control valves, motors and similar equipment provided as work of this section. 1. Final adjustment shall be performed by specially trained personnel in direct employ of manufacturer of primary temperature control system CLOSEOUT PROCEDURES: A. Owner's Instructions: Provide services of manufacturer's technical representative for a minimum of one 8-hour day to instruct Owner's personnel in operation and maintenance of electric control systems. 1. Training shall include both on-site (hands-on) and classroom training to the Owner's designated representative(s). 2. Schedule instruction with Owner, provide at least 7-day notice to Contractor and Engineer of training date. END OF SECTION ELECTRIC CONTROL SYSTEMS

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23 PART 1 -GENERAL 1.01 RELATED DOCUMENTS SECTION SEQUENCE OF OPERATION A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section SUMMARY A. This Section includes control sequences for HVAC systems and terminal units SYSTEM DESCRIPTION 1.04 WATER SOURCE HEAT PUMP A. Unoccupied Heat Pump Operation -The heat pump shall operate to maintain both the unoccupied cooling and heating setpoints within a zone. The compressor, fan, ground loop pump and reversing valve shall be energized and cycled to maintain the cooling setpoint. When there is a call for heating, the unit shall operate to maintain the setpoint. B. Occupied Cooling Operation - The cooling unit shall operate to maintain the cooling setpoint. 1. HeaUCool Set point and Mode -A space temperature sensor with an occupancy override button shall control the space temperature setpoint. Occupancy temperature and temperature setpoints adjustments for each unit shall be controlled by the Owner's representative from a central computer located in the Facilities Maintenance building. The override button shall allow the end user to override the unoccupied mode for a period of 1 hour. The override duration shall be radjustable from the central computer. 2. Cooling Setpoint Limiting -The cooling setpoint shall be limited by adjustable parameters in the programmable thermostat. In the Unoccupied mode, the setpoints shall be widened to accommodate night setback and are adjustable. 3. Fan Operation -The supply air fan shall operate at the appropriate speed in the Occupied mode. During the Occupied mode the fan shall operate continuously. 4. Compressor Operation- Compressor operation shall be cycled based upon load conditions as sensed by the thermostat. Compressor operation shall be overridden by a preset three minute minimum on/off time delay in order to maintain oil return when the unit is either initially energized, manually reset, switched between modes, or cycled within a single mode. The individual unit circulator shall energize with the compressor to operate whenever the compressor is on. 5. Reversing Valve Operation -A contact closure output shall be used to control the reversing valve state. The reversing valve shall be energized in the cooling mode. Once the valve is energized for cooling it shall stay energized until a heating cycle is initiated. The reversing valve operation shall be delayed after compressor shutdown to reduce noise due to refrigerant migration. In the event of a power failure the reversing valve shall fail to the heating mode. C. Unit Protection -The following shall be standard and optional unit protections as listed. 1. Compressor Cycle Limit -The compressor operated with minimum 3 minute on and 3 minute off cycles to maintain oil return for extended life of the compressor. In the cooling mode, the compressor run time shall be set to 20 minutes. In order to prevent overcooling the space, the reheat coil valve shall be opened to keep the compressor in operation once the space temperature hase been satisfied. During the remainder of the cooling cycle, the reheat coil shall raise the discharge air temperature as to not ovecool the space. 2. Reversing Valve Delay - The reversing valve delay is inherent due to the compressor cycle limit. The delay prevents the reversing valve from changing positions against the large differentials in refrigerant pressures during the change from cooling to heating and visa versa, eliminating the noise normally heard due to refrigerant migration. 3. Low Pressure Cutout - The low pressure switch is a normally closed switch which opens to lock out the compressor under low refrigerant circuit pressure conditions. ADG No / PWA Bid No DEC14 November 10, SEQUENCE OF OPERATION

24 4. High Pressure Cutout - The high pressure switch is normally a closed switch which opens under high refrigerant circuit pressure conditions (395 psi) which shall lockout the compressor. The high pressure switch is wired in series with the compressor contactor coil. 5. Low Temperature Protection -The low temperature protection is intended to sense and prevent water coil freeze up for low water temperature conditions. A low temperature condition is intended to stop and lockout compressor operation until a reset of the control is done. The low temperature protection temperature is adjustable for a ground source application where antifreeze is used in the loop. 6. Condensate Overflow -A condensate overflow alarm means the switch in the condensate pan has sensed the pan is full and requires servicing. When opened, the condensate overflow switch shall lock out the compressor and fan ENERGY RECOVERY UNIT (ERU) OPERATION A. The general operation of the ERU is maintained from manufacturer provided hard wired controls. B. Unoccupied Operation: In the unoccupied mode the unit shall be run at low speed to bring in the base ventilation requirement. C. Occupied Operation: The energy recovery unit shall operate at low speed until such time that the space carbon dioxide level builds up to 1000 ppm, then the unit shall be ramped up to run at high speed until space carbon dioxide level drops below 700 ppm at which time the unit shall return to low speed operation. D. Freeze prevention: On an indication from the ERU internal low temperature stat a trouble indication shall be communicated to the office where a unit failure warning shall be initiated. This indication shall indicate a supply fan failure, a wheel failure or an exhaust fan failure HEAT PUMP LOOP PUMP OPERATION A. See heat pump loop pump sequence of operation on plans HUMDIFIERS A. The humidifiers HU-1 and HU-2 shall be controlled by the factory installed controllers which will integrate with the building automation system through a BacNet gateway. Humidfiers shall run when unit mounted humidity sensors call for humidification in the space VARIABLE REFRIGERANT VOLUME HEAT PUMP SYSTEMS A. The two variable refrigerant volume heat pump systems shall operate as backup cooling systems for the Dispatch, ICC, and the Data Center. These systems shall be controlled by factory provided field installed controllers that will integrate with the building automation system with a BacNet gateway WATER TO WATER CHILLERS A. Chillers CH-1 and CH-2 shall be controlled by the factory installed controllers with will integrate with the building automation system through a BacNet gateway. A temperature sensor in the chilled water storage tank shall command the chillers on to maintain a supply water temperature of 55 Deg F. The condenser water pumps P-3 and P-4 shall be interlocked with the associated chiller to energize whenever the chiller compressor is commanded on. CTsensors on the pumps shall be utilized to prove flow. The load pumps P-5 and P-6 shall operate continuously at a minimum flow rate of 48 GPM and shall be ramped up to maintain a chilled water temperature diffential of 10 Deg F. Pumps P-5 and P-6 have ECM motors which can accept a 0-10 volt signal from the BAS SUMITTALS A. General: Submit the following according to the Conditions of the Contract and Division 1 Specification Sections. B. Shop Drawings showing operating sequences of various equipment, devices, components, and materials included in the Text and defining the components' contribution to the system. SEQUENCE OF OPERATION

25 PART 2 PRODUCTS (NOT APPLICABLE) PART 3 EXECUTION (NOT APPLICABLE) END OF SECTION SEQUENCE OF OPERATION

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27 PART1 GENERAL 1.01 SECTION INCLUDES A. Hydronic system requirements. B. Condenser water piping, above grade. C. Equipment drains and overflows. D. Pipe hangers and supports. E. F. SECTION HYDRONIC PIPING Unions, flanges, mechanical couplings, and dielectric connections. Valves: 1.02 RELATED REQUIREMENTS A. Section HVAC Water Treatment: Pipe cleaning REFERENCE STANDARDS A. ASME B31.9- Building Services Piping; 2011 (ANSI/ASME B31.9). B. ASTM F1476- Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications; 2007 (Reapproved 2013). C. AWWA C606- Grooved and Shouldered Joints; 2011 (ANSI/AWWA C606). D. 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.; SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: 1.05 QUALITY ASSURANCE 1.06 DELIVERY, STORAGE, AND HANDLING 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 Architect. 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: ADG No / PWA Bid No DEC14 November 10, HYDRONIC PIPING

28 2.02 CONDENSER WATER PIPING, ABOVE GRADE 2.03 EQUIPMENT DRAINS AND OVERFLOWS 2.04 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 (50 mm) and Under: B. Flanges for Pipe Over 2 Inches (50 mm): 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. 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. END OF SECTION Bid No DEC14 November 10, HYDRONIC PIPING

29 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. HVAC systems for the building. 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 RELATED REQUIREMENTS A. Section Utility Excavation and Fill: Procedures for trenching and backfilling for execution of work of this section REFERENCE STANDARDS A. ASHRAE Publication: Ground-Source Geothermal Systems for Commercial and Institutional Buildings by Kavanaugh, S.P., and K. Rafferty B. ASTM D2447- Standard Specification for Polyethylene (PE) Plastic Pipe, Schedules 40 and 80, Based on Outside Diameter; C. ASTM D Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing; D. ASTM D Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products; E. ASTM D Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter; F. ASTM D3261 -Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing; 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 Pipe and Tubing; I. IGSHPA (GROUT) -Grouting Procedures for GHP Systems; International Ground Source Heat Pump Association; J. IGSHPA (INSTALL)- Closed-Loop/Ground-Source Heat Pump Systems: Installation Guide; International Ground Source Heat Pump Association; K. PPI TR-4 - PPI Listing of Hydrostatic Design Basis (HDB), 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 involved with work. Bid No DEC14 November 10, GROUND-LOOP HEAT-PUMP PIPING

30 1.05 SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. No substitutions will be allowed without authorization from the Architect C. Installers Qualifications, provide documentation of Contractor's: 1. Copy of the Contractor's geothermal well driller license for the State of 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. 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 G. 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. H. Warranty: Submit manufacturers warranty and ensure forms have been filled out in Owner's name and registered with manufacturer QUALITY ASSURANCE A. Installer Qualifications: Company specializing in performing the work of this section with minimum 5 years of documented experience and 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 the last three years. 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 installation practices of (IGSHPA). The Contractor shall comply with these standards and 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. 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 Manufacturers Warranty of no less than 25 years GROUND-LOOP HEAT-PUMP PIPING

31 PART 2 PRODUCTS 2.01 HEAT EXCHANGER A. The ground-loop heat exchanger has been designed; Contractor is responsible for execution as required in the Contract Documents. B. Heat Exchanger Configuration: Closed system; high density polyethylene piping in vertical boreholes located as indicated on drawings. C. Heat Exchanger Performance: 1. See drawings 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 (1.1 MPa). a. All piping used for ground-loop 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 ground-loop 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 ground-loop heat exchanger will ship from the factory pre-charged with air. 3. Other Pipe of 31nches (75 mm) Diameter and Larger: Comply with ASTM DR15.5 or ASTM F714, with minimum working pressure rating of 100 psi (0.69 MPa). 4. Other Pipe 1.25 Inches (32 mm) But Less Than 3 Inches (75 mm) In Diameter (Nominal): Comply with ASTM with minimum working pressure rating of 110 psi (0.76 MPa). 5. Other Pipe Less Than 1.25 Inches (32 mm) in Diameter (Nominal): Comply with ASTM with minimum working pressure rating of 160 psi (1.1 MPa). 6. Long Term Hydrostatic Design Basis: 1600 psi (11 MPa) at 73 degrees F (23 degrees C), 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. B. 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 upon advanced approval by Architects Design Group) that are quality controlled to provide a leak-free union between piping ends that is stronger than the piping itself. Each fitting shall be identified with the manufacturer's name, nominal size, pressure rating, relevant ASTM standards and date of manufacturer. Do not use other barbed fittings or hose clamps. 1. Electrofusion Type Fittings: Comply with ASTM F Butt Fusion Fittings: Comply with ASTM Socket Type Fittings: Comply with ASTM Where threaded fittings must be used for connection to equipment or dissimilar piping, use fittings and thread sealant compatible and effective with antifreeze used. 5. Manifolds: HOPE pipe, joined together with heat fusion, shall be used for all of the main header piping. 6. Manufacturers: a. Any manufacturer listed in PPI TR-4 for the material to be used. Bid No DEC14 November 10, GROUND-LOOP HEAT-PUMP PIPING

32 C. Detectable Underground Tape: Magnetic detectable conductor in 2 inch (50 mm) wide rot-resistant plastic tape or mesh, brightly colored, imprinted every 36 inches with "CAUTION GROUND-LOOP HEAT EXCHANGER PIPELINE BURIED BELOW" in large letters. D. Backfill for Vertical Boreholes: Thermally enhanced bentonite. 1. Summary: a. Thermally enhanced bentonite grout shall be used to seal and backfill each vertical U-bend bore of the ground-loop 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. 1) A bentonite-based two-part, field mixed, high to extreme-high solids material that can be mixed to meet the of thermal conductivity as indicated on the drawings. 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. 2) 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. Proportions of water, grout and sand per manufactures requirements. 4. 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 ) Place fresh water in a conventional paddle mixing tank. 2) Start mixer and Bentonite Base (Part 1). 3) 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. 4) 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. 5. Manufacturers: a. Geopro- Thermal Grout Select. b. Cetco. c. Baroid- 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 and utilities from the effects of excavation. D. Verify that layout dimensions are correct and that available land is sufficient for design. E. 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 F. The depth of all headers and supply and return piping is indicated on the plans and must be maintained. G. Notify Architect of unsatisfactory conditions. 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 GROUND-LOOP HEAT-PUMP PIPING

33 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. a. The maximum borehole diameter will be six inches. If a larger diameter is required, it must be approved by Architect 3. Minimize over-drilling; fill over-drilled areas with backfill or excavated materials. 4. Piping: Pressure test heat exchanger piping 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. Excavate using the procedures specified in Section , Utility Excavation and Fill. 5. Sheathing and shoring shall be done as necessary for protection of work and personnel safety. 6. Unless otherwise indicated, excavation shall be open cut except for short sections. 7. Maintain trenches free of debris, material, and obstructions that may damage pipe. 8. Piping: Assemble heat exchanger piping and test before backfilling POLYETHYLENE PIPING A. Join piping and fittings using heat fusion in accordance to ASTM D261 0, ASTM D2683 and the manufacturer's heat fusion specifications. The operator shall be heat fusion certified and experienced in executing quality fusion joints; do not use solvents, adhesives, or mechanical fittings. 1. During Installation the socket's final cleaning shall be completed with individual use alcohol wipes prior to heating for fusion. Rags may be used for preliminary cleaning but reuse is strictly prohibited. 2. Sidewinder heat fusion saddle taps shall be completed before pipe is installed in trench. 3. Electrofusion saddle taps should be avoided and can only be used with Architects Design Group's approval. 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 or 25 times the nominal pipe diameter whichever greater; 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 ground-loop 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-seal tested assemblies before installation. H. Test piping to be installed in trenches after installation but before backfilling. Bid No DEC14 November 10, GROUND-LOOP HEAT-PUMP PIPING

34 I. If necessary, an iron (sinker) bar can be attached at the base of each ground-loop 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 ground-loop heat exchanger pipe ends will be sealed prior to insertion into the borehole. 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. L. Where piping passes through foundation walls, provide sleeves sealed with non-hardening, waterproof material. Link-Seal model LS-316 is acceptable BACKFILLING A. Install in compliance with local authorities having jurisdiction. B. Vertical Boreholes: Backfill after pipe installation in accordance with IGSHPA Grouting Procedures for GHP Systems. C. The vertical boreholes are to be grouted immediately on completion of the hole and insertion of the pipe. Grouting from the bottom up, in a continuous fashion, using a 1-1/4" inside diameter HOPE tremie pipe. The tremie pipe will be pulled out during the grouting procedure maintaining the pipe's end just below grout level within the borehole. D. All State and local regulations will be met for borehole grouting of the vertical boreholes. E. Trenches: 1. Provide minimum cover over piping as shown on drawings. 2. Backfill trenches after pipe has been installed and tested, using fill free of rocks and other debris. 3. Unsuitable backfill material shall be removed as directed by Architect 4. Install detectable tape continuously above top of all buried pipe as indicated on drawings. 5. Backfill and compact using the procedures specified in Section , Trenching for Site Utilities. 6. Backfill to original grades with sufficient overfill to allow for settlement. F. Protect piping from displacement FIELD QUALITY CONTROL A. Ground-Loop Heat Exchanger Pipe Testing 1. The pipe used in ground-loop heat exchanger shall be filled with water and pressurized to 1 00 psi to check for leaks before insertion. B. Vertical Borehole Grout Testing 1. Thermally enhanced bentonite used with the backfill for Vertical boreholes shall have three sample containers and return cartons provided for return to the manufacturer for analysis. Through the course of the project, three sample specimens will be taken of the mixed grouting material: once at the beginning of the installation; once approximately one-third through the installation; and once approximately two-thirds through the installation. An analysis of each sample will be performed by the grout manufacturer to verify the minimum specified thermal performance with a report being sent immediately to the entity requesting the analysis. C. System Pressure Test 1. Before connection (header) trenches are backfilled, the assembled Ground-Loop Heat-Pump Piping system shall be pressure tested with water at 100 psi (689 kpa) for 30 minutes with no observed leaks. a. Do not to exceed SDR 11 pipe working pressure at bottom of the pipe used in Vertical Bore Applications 2. Before covering the bore field, when system pressure testing is taking place, the contractor shall notify Architects Design Group 24 hours before the test taking place GROUND-LOOP HEAT-PUMP PIPING

35 3.06 RECORDING A. The contractor shall coordinate with Owner's contractor to record as-built locations of: 1. Vertical bores locations. a. Prior to header trench back filling. 2. Bore field valve locations. 3. Purge pit location. 4. Loop supply and return pipe routing. B. The System Purging shall be documented as to the following as a minimum: 1. Date of test. 2. Purge flow 3. Pressure 4. Time of starting 5. Time when flow was reversed 6. No of circuit valves open during the process 7. Pressure on the purge pump after purging was complete. 8. The operator who was executing the process 9. (Certifications that water flow is free of debris) C. The System Pressure Test shall be documented as to the following: 1. Date of the test 2. Indication of what section of the bore field was tested 3. Pressure at start 4. Time period of test 5. Pressure at end 6. Test operators name D. The Boring Log shall be documented as to the following: 1. Location 2. GPS Location 3. Date & time vertical bore started 4. Date & time vertical bore ended 5. Formation recorded by depth 6. Bore diameter 7. Vertical pipe size 8. Grout type used 9. Grout mixture details 10. Type of drilling rig model used for bore 11. Drilling mud 12. Drilling log provided by 13. Person who supervised the bore drilling 3.07 CLEANING A. System Purging 1. Shall be completed as per ASHRAE Publication: Ground-Source Geothermal Systems for Commercial and Institutional Buildings by Kavanaugh, S.P., and K. Rafferty a. A purging system consists of a tank (500 gal minimum), a pump capable of the conditions indicated on the drawings, suction filter in the base of the tank, return at or below the water level in the tank and a valve arrangement suitable for reversing flow through the field. b. Before purging starts Architect shall be notified at least 24 hours in advance. 2. Bore Field System Purging a. Each supply and return circuit shall be flushed and purged with a water velocity of two feet per second, the flow direction shall be cycled for a minimum of three times for a minimum of 10 minutes in each direction (until the water flow is free of any debris) GROUND-LOOP HEAT-PUMP PIPING

36 The bore field system purging shall be completed separately of the building system. The lines shall be left filled with clean water and then pressure tested. B. Leave adjacent paved areas broom clean. C. Clear debris, including excess backfill and excavated dirt and rock, bore field area. D. The Contractor shall be responsible for the removal of all cutting materials from the jobsite and the restoration of the site to its' original condition. The Contractor shall provide the necessary seeding and strawing to rehabilitate the disturbed areas PROTECTION A. Protect area during excavation from excess runoff and erosion. B. During installation, all debris, and small animals shall be kept out of the pipe. Ends of the HOPE pipe used for the Heat Exchanger shall be sealed until the pipe is joined to the circuits. Sealing means heating the ends of the pipe and crimping the heat exchanger closed. Tape and or plastic caps are not considered as sealed. C. All pipe and conduit ends shall be kept sealed and lines left clean and unobstructed during construction. D. Protect pipe protrusions from damage until connections to building systems are installed CLOSEOUT ACTIVES A. Provide Owner items as specified on drawings including: 1. Operating wrench for bore field valves. Provide written conformation indicating: a. Date when turned over b. Whom from Owner accepted END OF SECTION GROUND-LOOP HEAT-PUMP PIPING

37 PART1 GENERAL 1.01 SECTION INCLUDES A. Expansion tanks. B. Air vents. C. Air separators. D. Suction diffusers RELATED REQUIREMENTS A. Section Hydronic Piping REFERENCE STANDARDS SECTION HYDRONIC SPECIAL TIES A. ASME BPVC-VIII-1 - Boiler and Pressure Vessel Code, Section VIII, Division 1 - Rules for Construction of Pressure Vessels; SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Provide product data for manufactured products and assemblies required for this project. Include component sizes, rough-in requirements, service sizes, and finishes. Include product description, model and dimensions. C. Project Record Documents: Record actual locations of flow controls. D. Maintenance Data: Include installation instructions, assembly views, lubrication instructions, and replacement parts list QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing the type of products specified in this section, with minimum three years of documented experience DELIVERY, STORAGE, AND HANDLING A. Accept valves on site in shipping containers with labeling in place. Inspect for damage. B. Provide temporary end caps and closures on piping and fittings. Maintain in place until installation. C. Protect piping systems from entry of foreign materials by temporary covers, completing sections of the work, and isolating parts of completed system. PART 2 PRODUCTS 2.01 EXPANSION TANKS A. Construction: Welded steel, tested and stamped in accordance with ASME BPVC-VIII-1; supplied with National Board Form U-1, rated for working pressure of 125 psi (860 kpa), with flexible EPDM diaphragm or bladder sealed into tank, and steel support stand. B. Accessories: Pressure gage and air-charging fitting, tank drain; precharge to 12 psi (80 kpa). C. Automatic Cold Water Fill Assembly: Pressure reducing valve, reduced pressure double check back flow preventer, test cocks, strainer, vacuum breaker, and valved by-pass AIR VENTS 2.03 AIR SEPARATORS A. Combination Air Separators/Strainers: 1. Steel, tested and stamped in accordance with ASME BPVC-VIII-1; for 125 psi (860 kpa) operating pressure, with integral bronze strainer, tangential inlet and outlet connections, and internal stainless steel air collector tube HYDRONIC SPECIAL TIES

38 2.04 SUCTION DIFFUSERS PART 3 EXECUTION 3.01 INSTALLATION A. Install specialties in accordance with manufacturer's instructions. END OF SECTION HYDRONIC SPECIAL TIES

39 PART1 GENERAL 1.01 SECTION INCLUDES A. System lubricated circulators. B. In-line circulators. C. Vertical in-line pumps RELATED REQUIREMENTS SECTION HYDRONIC PUMPS A. Section Vibration and Seismic Controls for Plumbing Piping and Equipment. B. Section Common Motor Requirements for HVAC Equipment. C. Section Vibration and Seismic Controls for HVAC Piping and Equipment. D. Section HVAC Piping Insulation. E. Section Hydronic Piping. F. Section Hydronic Specialties. G. Section Equipment Wiring: Electrical characteristics and wiring connections REFERENCE STANDARDS A. UL 778- Standard for Motor-Operated Water Pumps; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Provide certified pump curves showing performance characteristics with pump and system operating point plotted. Include NPSH curve when applicable. Include electrical characteristics and connection requirements. C. Operation and Maintenance Data: Include installation instructions, assembly views, lubrication instructions, and replacement parts list. PART 2 PRODUCTS 2.01 MANUFACTURERS A. ITT Bell & Gossett: B. Grundfos PACO. C. TACO D. WILO E. Substitutions: See Section Product Requirements HVAC PUMPS- GENERAL A. Provide pumps that operate at specified system fluid temperatures without vapor binding and cavitation, are non-overloading in parallel or individual operation, and operate within 25 percent of midpoint of published maximum efficiency curve. B. Products Requiring Electrical Connection: Listed and classified by UL or testing agency acceptable to authority having jurisdiction as suitable for the purpose specified and indicated SYSTEM LUBRICATED CIRCULATORS A. Type: Horizontal shaft, single stage, direct connected with multiple speed wet rotor motor for in-line mounting, for 140 psi (965 kpa) maximum working pressure, 230 degrees F (11 0 degrees C) maximum water temperature. B. Casing: Cast iron with flanged pump connections HYDRONIC PUMPS

40 C. Impeller, Shaft, Rotor: Stainless Steel. D. Bearings: Metal Impregnated carbon (graphite) and ceramic. E. Motor: Impedance protected, multiple speed. F. Electrical Characteristics: volts, single phase, 60 Hz VERTICAL IN-LINE PUMPS A. Type: Vertical, single stage, close coupled, radially split casing, for in-line mounting, for 175 psi (1200 kpa) working pressure. B. Casing: Cast iron, with suction and discharge gage port, casing wear ring, seal flush connection, drain plug, flanged suction and discharge. C. Impeller: Bronze, fully enclosed, keyed directly to motor shaft or extension. D. Shaft: Carbon steel with stainless steel impeller cap screw or nut and bronze sleeve. E. Seal: Mechanical seal, 225 degrees F (1 07 degrees C) maximum continuous operating temperature. PART 3 EXECUTION 3.01 PREPARATION A. Verify that electric power is available and of the correct characteristics INSTALLATION A. Install in accordance with manufacturer's instructions. B. Provide access space around pumps for service. Provide no less than minimum space recommended by manufacturer. C. Decrease from line size with long radius reducing elbows or reducers. Support piping adjacent to pump such that no weight is carried on pump casings. For close coupled or base mounted pumps, provide supports under elbows on pump suction and discharge line sizes 4 inches (1 02 mm) and over. Refer to Section D. Provide line sized shut-off valve and strainer on pump suction, and line sized soft seat check valve and balancing valve on pump discharge. E. Provide air cock and drain connection on horizontal pump casings. F. Provide drains for bases and seals, piped to and discharging into floor drains. G. Lubricate pumps before start-up. H. Provide side-stream filtration system for closed loop systems. Install across pump with flow from pump discharge to pump suction from pump tappings. END OF SECTION HYDRONIC PUMPS

41 PART1 GENERAL 1.01 SECTION INCLUDES A. Cleaning of piping systems. B. Chemical feeder equipment. C. Chemical treatment RELATED REQUIREMENTS SECTION HVAC WATER TREATMENT 1.03 SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Maintenance Materials: Furnish the following for Owner's use in maintenance of project QUALITY ASSURANCE 1.05 REGULATORY REQUIREMENTS PART 2 PRODUCTS 2.01 MANUFACTURERS A. Earth Wise Environmental. B. Substitutions: See Section Product Requirements MATERIALS A. System Cleaner: 1. Manufacturers: a. Earth Wise Environmental. b. Substitutions: See Section Product Requirements. B. Closed System Treatment (Water): 1. Manufacturers: a. Earth Wise Environmental. b. Substitutions: See Section Product Requirements. 2. Sequestering agent to reduce deposits and adjust ph; polyphosphate. 3. Corrosion inhibitors; boron-nitrite, sodium nitrite and borax, sodium totyltriazole, low molecular weight polymers, phosphonates, sodium molybdate, or sulphites. 4. Conductivity enhancers; phosphates or phosphonates BY-PASS (POT) FEEDER A. Manufacturers: 1. Neptune Chemical Pump Company: 2. Substitutions: See Section Product Requirements. B. 1.8 gal (6.8 L) quick opening cap for working pressure of 175 psi (1200 kpa) with cartridge filter SIDE-STREAM FILTRATION SYSTEM A. System: Flow indicator, filter housing with cartridge filter, shut-off valves, and flow control valve. B. Cartridges: 30 micron (0.03 mm) for start-up and 5 micron (0.005 mm) for system operation. PART 3 EXECUTION 3.01 PREPARATION A. Systems shall be operational, filled, started, and vented prior to cleaning. Use water meter to record capacity in each system. B. Place terminal control valves in open position during cleaning. C. Verify that electric power is available and of the correct characteristics HVAC WATER TREATMENT

42 3.02 CLEANING SEQUENCE A. Concentration: 1. As recommended by manufacturer INSTALLATION A. Install in accordance with manufacturer's instructions CLOSED SYSTEM TREATMENT A. Provide one bypass feeder on each system. Install isolating and drain valves and necessary piping. Install around balancing valve downstream of circulating pumps unless indicated otherwise. B. Introduce closed system treatment through bypass feeder when required or indicated by test. C. Provide 3/4 inch (19 mm) water coupon rack around circulating pumps with space for 4 test specimens CLOSEOUT ACTIVITIES A. Training: Train Owner's personnel on operation and maintenance of chemical treatment system. 1. Provide minimum of two hours of instruction for two people. 2. Have operation and maintenance data prepared and available for review during training. 3. Conduct training using actual equipment after treated system has been put into full operation MAINTENANCE A. Provide a separate maintenance contract for specified maintenance service. B. Perform maintenance work using competent and qualified personnel under the supervision and in the direct employ of the equipment manufacturer or original installer. C. Provide service and maintenance of treatment systems for one year from Date of Substantial Completion. D. Provide monthly technical service visits to perform field inspections and make water analysis on site. Detail findings in writing on proper practices, chemical treating requirements, and corrective actions needed. Submit two copies of field service report after each visit. E. Provide laboratory and technical assistance services during this maintenance period. F. Provide on site inspections of equipment during scheduled or emergency shutdown to properly evaluate success of water treatment program, and make recommendations in writing based upon these inspections. END OF SECTION HVAC WATER TREATMENT

43 PART1 GENERAL 1.01 SECTION INCLUDES A. Metal ductwork. B. Kitchen hood ductwork RELATED REQUIREMENTS A. Section Firestopping. SECTION HVAC DUCTS AND CASINGS B. Section Duct Insulation: External insulation and duct liner. C. Section Air Duct Accessories. D. Section Air Outlets and Inlets. E. Section Testing, Adjusting, and Balancing for HVAC REFERENCE STANDARDS A. ASTM A36/A36M - Standard Specification for Carbon Structural Steel; B. ASTM A653/A653M- Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process; C. ASTM A1008/A1008M- Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength, Low Alloy, and High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable; D. ICC-ES AC193- Acceptance Criteria for Mechanical Anchors in Concrete Elements; E. ICC-ES AC308 -Acceptance Criteria for Post-Installed Adhesive Anchors in Concrete Elements; F. NFPA 90A- Standard for the Installation of Air-Conditioning and Ventilating Systems; National Fire Protection Association; G. NFPA 96 - Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations; National Fire Protection Association; H. SMACNA HVAC Duct Construction Standards; Sheet Metal and Air Conditioning Contractors' National Association; I. SMACNA Kitchen Ventilation Systems and Food Service Equipment Fabrication & Installation Guidelines; SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Provide data for duct materials. C. Project Record Documents: Record actual locations of ducts and duct fittings. Record changes in fitting location and type. Show additional fittings used QUALITY ASSURANCE A. Manufacturer Qualifications. Company specializing in manufacturing the type of products specified in this section, with minimum three years of documented experience. B. Installer Qualifications: Company specializing in performing the type of work specified in this section, with minimum 5 years of documented experience REGULATORY REQUIREMENTS A. Construct ductwork to NFPA 90A standards. Bid No DEC14 November 10, HVAC DUCTS AND CASINGS

44 1.07 FIELD CONDITIONS A. Do not install duct sealants when temperatures are less than those recommended by sealant manufacturers. B. Maintain temperatures within acceptable range during and after installation of duct sealants. PART 2 PRODUCTS 2.01 DUCT ASSEMBLIES A. All Ducts: Galvanized steel, unless otherwise indicated. B. Low Pressure Supply (System with Cooling Coils): 1/2 inch w.g. (125 Pa) pressure class, galvanized steel. C. Return and Relief: 1/2 inch w.g. (125 Pa) pressure class, galvanized steel. D. Dishwasher Exhaust: 1/2 inch w.g. (125 Pa) pressure class, galvanized steel. E. Grease Exhaust: 1/2 inch w.g. (125 Pa) pressure class, stainless steel. 1. Construct of ASTM A1011/A1011M 16 gage (1.52 mm) un-galvanized steel. 2. Construction: a. Liquid tight with continuous external weld for all seams and joints. b. Where ducts are not self draining back to equipment, provide low point drain pocket with copper drain pipe to sanitary sewer. 3. Access Doors: a. Provide for duct cleaning inside horizontal duct at drain pockets, every 20 feet (6 m) and at each change of direction. b. Use same material and thickness as duct with gaskets and sealants rated 1500 degrees F (815 degrees C) for grease tight construction. F. Transfer Air and Sound Boots: 1/2 inch w.g. (125 Pa) pressure class, fibrous glass MATERIALS A. Galvanized Steel for Ducts: Hot-dipped galvanized steel sheet, ASTM A653/A653M FS Type B, with G60/Z180 coating. B. Un-Galvanized Steel for Ducts: ASTM A 1 008/A 1 008M, Designation CS, cold-rolled commercial steel. C. Stainless Steel for Ducts: ASTM A480/A480M, Type 304. D. Hanger Rod: ASTM A36/A36M; steel, galvanized; threaded both ends, threaded one end, or continuously threaded. E. Hanger Fasteners: Attach hangers to structure using appropriate fasteners, as follows: 1. Concrete Wedge Expansion Anchors: Complying with ICC-ES AC Concrete Adhesive Type Anchors: Complying with ICC-ES AC Other Types: As required DUCTWORK FABRICATION A. Fabricate and support in accordance with SMACNA 1966 and as indicated. B. Provide duct material, gages, reinforcing, and sealing for operating pressures indicated. C. Provide turning vanes of perforated metal with glass fiber insulation when acoustical lining is indicated. D. Increase duct sizes gradually, not exceeding 15 degrees divergence wherever possible; maximum 30 degrees divergence upstream of equipment and 45 degrees convergence downstream. E. Fabricate continuously welded round and oval duct fittings in accordance with SMACNA HVAC DUCTS AND CASINGS

45 2.04 MANUFACTURED DUCTWORK AND FITTINGS A. Flexible Ducts: Multiple layers of aluminum laminate supported by helically wound spring steel wire. 1. UL labeled. 2. Insulation: Fiberglass insulation with polyethylene vapor barrier film. 3. Pressure Rating: 10 inches WG (2.50 kpa) positive and 1.0 inches WG (250 Pa) negative. 4. Maximum Velocity: 4000 fpm (20.3 m/sec). 5. Temperature Range: Minus 20 degrees F to 210 degrees F (Minus 28 degrees C to 99 degrees C). B. Grease Exhaust: Nominal 3 inches (76.2 mm) thick ceramic fiber insulation between 20 gage, inch (0.95 mm), Type 304 stainless steel liner and 24 gage, inch (0.61 mm), aluminized steel sheet outer jacket. 1. Tested and UL listed for use with commercial cooking equipment in accordance with NFPA Certified for zero clearance to combustible material in accordance with: 3. Materials and construction of the modular sections and accessories to be in accordance with the terms of the following listings: 4. Manufacturers: a. AMPCO; : b. Substitutions: See Section Product Requirements. C. Dishwasher Exhaust: Minimum 21 gage, inch (0.87 mm) thick, single wall, Type 304 stainless steel. 1. Single wall, factory built chimney liner system. 2. Designed, fabricated, and installed to be liquid tight preventing exhaust leakage into the building. 3. Joints to be sealed during installation with factory supplied overlapping V-bands and sealant. 4. Manufacturers: 2.05 KITCHEN HOOD EXHAUST DUCTWORK A. Fabricate in accordance with SMACNA 1966, SMACNA 1767, and NFPA 96. PART 3 EXECUTION 3.01 INSTALLATION A. Install, support, and seal ducts in accordance with SMACNA B. Install in accordance with manufacturer's instructions. C. During construction provide temporary closures of metal or taped polyethylene on open ductwork to prevent construction dust from entering ductwork system. D. Flexible Ducts: Connect to metal ducts with adhesive. E. Kitchen Hood Exhaust: Provide residue traps at base of vertical risers with provisions for clean out. F. Duct sizes indicated are inside clear dimensions. For lined ducts, maintain sizes inside lining. G. Locate ducts with sufficient space around equipment to allow normal operating and maintenance activities. H. Use double nuts and lock washers on threaded rod supports. END OF SECTION HVAC DUCTS AND CASINGS

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47 PART1 GENERAL 1.01 SECTION INCLUDES A. Air turning devices/extractors. B. Backdraft dampers - metal. C. Backdraft dampers - fabric. D. Fire dampers. E. Flexible duct connections. F. Volume control dampers RELATED REQUIREMENTS A. Section Firestopping. SECTION AIR DUCT ACCESSORIES B. Section Vibration and Seismic Controls for Plumbing Piping and Equipment. C. Section HVAC Ducts and Casings. D. Section Air Terminal Units: Pressure regulating damper assemblies REFERENCE STANDARDS A. NFPA 90A- Standard for the Installation of Air-Conditioning and Ventilating Systems; National Fire Protection Association; B. SMACNA HVAC Duct Construction Standards; C. UL 555- Standard for Fire Dampers; Underwriters Laboratories Inc.; Current Edition, Including All Revisions SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Provide for shop fabricated assemblies including volume control dampers and hardware used. Include electrical characteristics and connection requirements QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in manufacturing the type of products specified in this section, with minimum three years of documented experience. B. Products Requiring Electrical Connection: Listed and classified by Underwriters Laboratories Inc. as suitable for the purpose specified and indicated DELIVERY, STORAGE, AND HANDLING A. Protect dampers from damage to operating linkages and blades. PART 2 PRODUCTS 2.01 AIR TURNING DEVICES/EXTRACTORS A. Multi-blade device with blades aligned in short dimension; steel construction; with individually adjustable blades, mounting straps BACKDRAFT DAMPERS- METAL A. Gravity Backdraft Dampers, Size 18 x 18 inches (450 x 450 mm) or Smaller, Furnished with Air Moving Equipment: Air moving equipment manufacturer's standard construction. B. Multi-Blade, Parallel Action Gravity Balanced Backdraft Dampers: Galvanized steel, with center pivoted blades of maximum 6 inch (150 mm) width, with felt or flexible vinyl sealed edges, linked together in rattle-free manner with 90 degree stop, steel ball bearings, and plated steel pivot pin; adjustment device to permit setting for varying differential static pressure AIR DUCT ACCESSORIES

48 2.03 FIRE DAMPERS A. Fabricate in accordance with NFPA 90A and UL 555, and as indicated. B. Ceiling Dampers: Galvanized steel, 22 gage, inch (0.76 mm) frame and 16 gage, inch (1.52 mm) flap, two layers inch (3.2 mm) ceramic fiber on top side and one layer on bottom side for round flaps, with locking clip. C. Horizontal Dampers: Galvanized steel, 22 gage, inch (0.76 mm) frame, stainless steel closure spring, and lightweight, heat retardant non-asbestos fabric blanket. D. Curtain Type Dampers: Galvanized steel with interlocking blades. Provide stainless steel closure springs and latches for horizontal installations. Configure with blades out of air stream except for 1.0 inch (250 Pa) pressure class ducts up to 12 inches (300 mm) in height. E. Multiple Blade Dampers: 16 gage, inch (1.52 mm) galvanized steel frame and blades, oil-impregnated bronze or stainless steel sleeve bearings and plated steel axles, 1/8 x 1/2 inch (3.2 x 12.7 mm) plated steel concealed linkage, stainless steel closure spring, blade stops, and lock FLEXIBLE DUCT CONNECTIONS A. Fabricate in accordance with SMACNA 1966 and as indicated. B. Flexible Duct Connections: Fabric crimped into metal edging strip. 1. Fabric: UL listed fire-retardant neoprene coated woven glass fiber fabric to NFPA 90A, minimum density 30 oz per sq yd (1.0 kg/sq m) VOLUME CONTROL DAMPERS A. Fabricate in accordance with SMACNA 1966 and as indicated. B. Single Blade Dampers: Fabricate for duct sizes up to 6 x 30 inch (150 x 760 mm). 1. Fabricate for duct sizes up to 6 x 30 inch (150 x 760 mm). 2. Blade: 24 gage, inch (0.61 mm), minimum. C. Multi-Blade Damper: Fabricate of opposed blade pattern with maximum blade sizes 8 x 72 inch (200 x 1825 mm). Assemble center and edge crimped blades in prime coated or galvanized channel frame with suitable hardware. D. End Bearings: Except in round ducts 12 inches (300 mm) and smaller, provide end bearings. On multiple blade dampers, provide oil-impregnated nylon, thermoplastic elastomer, or sintered bronze bearings. E. Quadrants: 1. Provide locking, indicating quadrant regulators on single and multi-blade dampers. 2. On insulated ducts mount quadrant regulators on stand-off mounting brackets, bases, or adapters. 3. Where rod lengths exceed 30 inches (750 mm) provide regulator at both ends MISCELLANEOUS PRODUCTS A. Duct Opening Closure Film: Mold-resistant, self-adhesive film to keep debris out of ducts during construction. 1. Thickness: 2 mils (0.6 mm). 2. High tack water based adhesive. PART 3 EXECUTION 3.01 INSTALLATION A. Install accessories in accordance with manufacturer's instructions, NFPA 90A, and follow SMACNA Refer to Section for duct construction and pressure class. B. Provide backdraft dampers on exhaust fans or exhaust ducts nearest to outside and where indicated AIR DUCT ACCESSORIES

49 C. Provide fire dampers at locations indicated, where ducts and outlets pass through fire rated components, and where required by authorities having jurisdiction. Install with required perimeter mounting angles, sleeves, breakaway duct connections, corrosion resistant springs, bearings, bushings and hinges. D. Demonstrate re-setting of fire dampers to Owner's representative. E. At equipment supported by vibration isolators, provide flexible duct connections immediately adjacent to the equipment; see Section F. Provide balancing dampers at points on supply, return, and exhaust systems where branches are taken from larger ducts as required for air balancing. Install minimum 2 duct widths from duct take-off. G. Provide balancing dampers on high velocity systems where indicated. Refer to Section Air Terminal Units. H. Provide balancing dampers on duct take-off to diffusers, grilles, and registers, regardless of whether dampers are specified as part of the diffuser, grille, or register assembly. END OF SECTION Bid No DEC14 November 10, AIR DUCT ACCESSORIES

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51 PART1 GENERAL 1.01 SECTION INCLUDES 1.02 REFERENCE STANDARDS SECTION PACKAGED AIR-TO-AIR ENERGY RECOVERY UNITS A. AMCA 500-D- Laboratory Methods of Testing Dampers for Ratings; B. AMCA 500-L- Laboratory Methods of Testing Louvers for Ratings; C. AHRI P - Performance Rating of Air-to-Air Heat Exchangers for Energy Recovery Ventilation Equipment; Air-Conditioning, Heating, and Refrigeration Institute; D. ASH RAE Std Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size; E. ASH RAE Std 84- Method of Testing Air to Air Heat/Energy Exchangers; F. ASTM A653/A653M- Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process; G. ASTM C1338- Standard Test Method for Determining Fungi resistance of Insulation Materials and Facings; H. ASTM E84- Standard Test Method for Surface Burning Characteristics of Building Materials; I. ASTM G21 -Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi; J. NFPA 70- National Electrical Code; Most Recent Edition Adopted by Authority Having Jurisdiction, Including All Applicable Amendments and Supplements. K. NFPA 90A- Standard for the Installation of Air-Conditioning and Ventilating Systems; L. NFPA 255- Standard Method of Test of Surface Burning Characteristics of Building Materials; 2006 M. UL Standard for Factory-Made Air Ducts and Air Connectors; Current Edition, Including All Revisions. N. UL 723- Standard for Test for Surface Burning Characteristics of Building Materials; Current Edition, Including All Revisions SUBMITTALS A. Product Data: Manufacturer's installation instruction, product data, and engineering calculations. B. Shop Drawings: Show design and assembly of energy recovery unit and installation and connection details QUALITY ASSURANCE 1.05 DELIVERY, STORAGE, AND HANDLING 1.06 WARRANTY PART 2 PRODUCTS 2.01 MANUFACTURERS A. Energy Recovery Ventilators: 1. Semco Inc.; Model FV: 2. Substitutions: See Section Product Requirements ENERGY RECOVERY DESIGN CRITERIA A. See Schedule Bid No DEC14 November 10, PACKAGED AIR-TO-AIR ENERGY RECOVERY UNITS

52 2.03 ENERGY RECOVERY UNITS A. Energy Recovery Units: Dessicant wheel type; prefabricated packaged system designed by manufacturer. 1. Access: Hinged and/or screwed access panels on front. 2. Lifting holes at the unit base. 3. Framing: Welded extruded aluminum tubular frame capable of supporting components and casings. 4. Permanent name plate listing manufacturer mounted inside door near electrical panel CASING A. Wall, Floor, and Roof Panels: 1. Panels: Removable. 2. Construction: 1 inch (25 mm) thick, double wall box construction, with formed edges of exterior wall overlapping formed edges of interior wall. 3. Exterior Wall: Galvanized steel sheet. a. 20 gage, inch (0.91 mm) galvanized steel. b. Color: Gray. 4. Insulation: a. 1 inch (25 mm) insulated fiberglass. b. Mold, Fungi, and Bacteria Resistance: ASTM C1338, ASTM G21, and UL 181. c. Flame Spread Index: 25, maximum, when tested in accordance with ASTM E84, NFPA 255, and UL 723. d. Smoke Developed Index: 50, maximum, when tested in accordance with ASTM E84, NFPA 255, and UL Roof Panel: Weatherproof. 6. Fasteners: Stainless steel. 7. Coating: Polyurethane enamel. B. Access Panels: Provide access to components through a large, tightly sealed and easily removable panel. C. Doors: 1. Construct doors of same construction and thickness as wall panels. 2. Full unit height access doors 3. Hardware: a. Corrosion-resistant. D. Weather Hood: Provide on fresh air inlet and exhaust air outlet; removable for access. 1. Construction: ASTM A653/A653M G90/Z275 galvanized, 20 gage, inch (0.91 mm) steel sheet. 2. Screening: Expanded aluminum bird screen. 3. Fresh Air Weather Hood: Maintain a face velocity less than 340 feevmin (1.6 m/s) FANS A. Provide separate fans for exhaust and supply blowers. B. Fans: 1. Individually driven with a dedicated motor. 2. Backward inclined. 3. Double width, double inlet. 4. Class 1 steel wheels. 5. AMCA-rated. 6. Provide with non-overloading characteristics. C. Housings: 12 gage, inch (2.66 mm) aluminized steel with plenums integral to general housing and constructed to Class 1 fan standards. D. Motors: Bid No DEC14 November 10, PACKAGED AIR-TO-AIR ENERGY RECOVERY UNITS

53 1. Motors: Open drip proof inverter rated. 2. Efficiency. Premium. 3. Speed: inverter duty. 4. Control: Variable Frequency Drive. 5. Motor Slide Bases: Removable and adjustable. 6. Fan Motor: UL listed and labeled. E. Drives: 1. Provide Variable frequency inverter for operation of both the supply and return fan. Separate overloads are required for each motor 2. Fans: Belt driven. 3. Service Factor: TOTAL ENERGY WHEEL A. Wheel: Transfer heat and humidity from one air stream to the other with minimum carryover of the exhaust air into the supply air stream. B. Wheel Effectiveness: Rated in accordance with ASH RAE Std 84 and AHRI C. Flame Spread Index: 25, maximum, when tested in accordance with ASTM E84, NFPA 255, and UL 723. D. Smoke Developed Index: 50, maximum, when tested in accordance with ASTM E84, NFPA 255, and UL 723. E. Energy Recovery Wheel Media Face: 1. Conform to NFPA 90A. F. Rotor: 1. Type: Non-segmented hygroscopic aluminum wheel. 2. Mounted on permanently lubricated bearings. 3. Rotor Matrix: Corrosion resistant aluminum alloy composed of alternating corrugated and flat, continuously wound layers of uniform widths. 4. Rotor wheel: Reinforce with spokes, welded at the hub and perimeter to prevent any uneven run out during normal operations. G. Desiccant: 1. Type: 3A. 2. Performance: a. Desiccant: Non-dissolving, permanent, and resistant to damage from compressed air, low temperature steam, hot water or by vacuum cleaning. 3. Ventilation Factor: H. Pneumatic Seals: Extruded adjustable brush seals. 1. Locations: a. Around perimeter of wheel, and mounted perpendicular to face of wheel. b. Separation between exhaust and supply air streams on both sides of wheel. 2. Pressure Differential: Adjustable by means of a lockable quadrant operator. I. Drive: 1. Drive: Tensioned drive with full perimeter link style belt. J. Wheel Rotation Detection: 1. Turn off energy recovery unit if improper rotor rotation is detected. 2. Send alarm to Building Management System if rotation is not detected or belt is slipping. 3. Retain the following when calculations indicate frost could form on energy wheel. Note that frost control is not required when using variable frequency drive motors on wheel FILTERS A. Exhaust and Fresh Air Streams: MERV7 filters constructed to meet ASH RAE Std Bid No DEC14 November 10, PACKAGED AIR-TO-AIR ENERGY RECOVERY UNITS

54 2.08 DAMPERS A. Exhaust Back-Draft Damper: Factory installed, galvanized steel. 1. High performance, backdraft dampers suitable for application in HVAC systems with velocities to 3000 feet per minute (914 m/min). 2. Louvers, Dampers, and Shutters: AMCA 500-D and AMCA 500-L. 3. Damper Capacity: Demonstrate damper capacity to withstand HVAC system operating conditions. 4. Fabrication: a. Frame: 20 gage, inch (0.91 mm), 3 inch (76 mm) roll formed galvanized steel channel with rear flange, prepunched mounting holes, and welded corner clips for maximum rigidity. b. Blades: 1) Style: Single-piece, overlap frame. 2) Material: Roll formed 28 gage, inch (0.38 mm) galvanized steel. 3) Width: Maximum 6 inches (152 mm). B. Return Air Damper: 1. Factory installed, adjustable volume control, opposed blade damper for regulating airflow, based on external static pressure. 2. Return Air Damper: Structural hat channels, reinforced at corners. 3. Roll-formed Frames: Structurally superior to 13 gage, inch (2.28 mm) U-channel frames. 4. Blades: Single skin, 16 gage, inch (1.52 mm). C. Motorized Dampers: Provide motorized dampers at outside air inlet, exhaust air outlet, and supply air outlet. 1. Type: Motorized two position parallel blade damper with blade seals. 2. Motorized Damper: Roll-formed structural hat channels, reinforced at the corners, 3. Blades: Single skin, 16 gage, inch (1.52 mm) ROOF CURBS A. Curbs: Provide full perimeter roof curb fabricated from 10 gage, inch (3.42 mm) aluminized steel. 1. Curbs: Knock-down type. B. Gaskets: Provide closed cell PVC foam. 1. Install between top flange of isolation rail and bottom of energy recovery unit. 2. Install on top of curb POWER AND CONTROLS A. Motor Control Panels: UL listed. B. Include necessary motor starters, inverters, fuses, transformers and overload protection according to NFPA 70. C. Provide single-point field connection to power supply. D. Install wiring in accordance with NFPA ACCESSORIES A. Airflow Monitor: 1. Include integral airflow monitoring station with ability to read both ventilation and exhaust airflow expressed in cu ft/min (Us). 2. Mount monitor gauge on unit exterior and make casing connection watertight. B. Rotation Detector: 1. Equip unit with rotation sensor. 2. Equip controller with outdoor air temperature sensor that stops energy recovery wheel during moderate temperature periods PACKAGED AIR-TO-AIR ENERGY RECOVERY UNITS

55 3. Alarm Contact: 24 volt AC signal suitable for operating a relay. 4. Provide periodic stop function long enough to promote self-cleaning of wheel but not long enough to induce energy recovery. C. Freeze Protection Thermostat: 1. Equip unit with thermostat such that unit can be stopped when temperature drops to 23 degrees F (minus 5 degrees C) SERVICE ACCESSORIES A. Electrical Receptacle: 1. Provide duplex, ground fault interrupter type receptacle. 2. Provide re-settable circuit breaker in control panel. B. Electrical Components: Factory wired for single point power connection Hz power connection. 2. Isolate electrical box from the airflow. 3. Protect all integral wires and connections. 4. Electrical Components: UL Listed. 5. Electrical Panel: NEMA 3R mounted on the unit exterior for ease of access. PART 3 EXECUTION 3.01 EXAMINATION A. Verify that structure is ready for installation of unit, that openings in deck for ductwork, if required, are correctly sized and located, and that mechanical and electrical utilities supplying unit are of correct capacities and are accessible INSTALLATION A. Provide openings for suitable ductwork connection. B. Outdoor Installations: 1. Roof Panels: a. Fasteners: Use concealed means of attachment. b. Minimize penetrations through roof. c. Provide weather tight seal at required penetrations. 2. Provide drip edge around roof perimeter. 3. Do not locate roof panel joints above doors SYSTEM STARTUP A. Provide services of manufacturer's authorized representative to provide start up of unit CLEANING A. Clean filters, air plenums, interior and exposed-to-view surfaces prior to Substantial Completion. END OF SECTION PACKAGED AIR-TO-AIR ENERGY RECOVERY UNITS

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57 PART1 GENERAL 1.01 SECTION INCLUDES A. Water-source heat pumps. B. Controls RELATED REQUIREMENTS SECTION SMALL SPLIT-SYSTEM HEATING AND COOLING A. Section Ground-Loop Heat-Pump Piping: Ground-source water loop. B. Section Plumbing Piping: Indoor coil condensate drain. C. Section HVAC Ducts and Casings. D. Section Instrumentation and Control Devices for HVAC: Thermostats, humidistats, time clocks. E. Section Equipment Wiring: Electrical characteristics and wiring connections and installation and wiring of thermostats and other controls components REFERENCE STANDARDS A. NFPA 90A- Standard for the Installation of Air-Conditioning and Ventilating Systems; National Fire Protection Association; B. NFPA 90B - Standard for the Installation of Warm Air Heating and Air Conditioning Systems; National Fire Protection Association; SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Provide rated capacities, weights, accessories, electrical nameplate data, and wiring diagrams. C. Project Record Documents: Record actual locations of components and connections. D. Operation and Maintenance Data: Include manufacturer's descriptive literature, operating instructions, installation instructions, maintenance and repair data, and parts listing. E. 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 type of products specified in this section, with minimum three years of documented experience. B. Installer Qualifications: Company specializing in performing the work of this section with minimum three years of experience and approved by manufacturer WARRANTY A. See Section Closeout Submittals, for additional warranty requirements. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Vertical Stack Heat Pumps 1. Climatemaster 2. Whelan B. Console and Horizontal Heat Pumps 1. Climatemaster 2. Water Furnace 3. Florida Heatpump SMALL SPLIT-SYSTEM HEATING AND COOLING

58 C. Substitutions: See Section Product Requirements SYSTEM DESIGN A. Performance Requirements: See Drawings for additional requirements. B. Electrical Characteristics: 1. Disconnect Switch: Factory mount disconnect switch on equipment under provisions of Section PART 3 EXECUTION 3.01 EXAMINATION A. Verify that substrates are ready for installation of units and openings are as indicated on shop drawings. B. Verify that proper power supply is available and in correct location. C. Verify that proper fuel supply is available for connection INSTALLATION A. B. Install in accordance with manufacturer's instructions and requirements of local authorities having jurisdiction. Install in accordance with NFPA 90A and NFPA 90B. C. Pipe drain from unit to nearest floor drain. END OF SECTION SMALL SPLIT-SYSTEM HEATING AND COOLING Bid No DEC14 November 10,

59 PART1 GENERAL 1.01 SECTION INCLUDES SECTION VARIABLE REFRIGERANT VOLUME (VRV) HVAC SYSTEM A. Variable refrigerant volume HVAC system includes: 1. Outdoor/Condensing unit(s). 2. Indoor/Evaporator units. 3. Branch selector units. 4. Refrigerant piping. 5. Control panels. 6. Control wiring RELATED REQUIREMENTS A. Section Equipment Wiring: Power connections to equipment. 1. Provide separate power connections for each unit of equipment REFERENCE STANDARDS A. AHRI 210/240- Standard for Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment; Air-Conditioning, Heating, and Refrigeration Institute; B. NFPA 70 - National Electrical Code; National Fire Protection Association; Most Recent Edition Adopted by Authority Having Jurisdiction, Including All Applicable Amendments and Supplements. C. UL Heating and Cooling Equipment; Current Edition, Including All Revisions ADMINISTRATIVE REQUIREMENTS A. Preinstallation Meeting: Conduct a preinstallation meeting one week prior to the start of the work of this section; require attendance by all affected installers SUBMITTALS A. Pre-Bid Submittals: For proposed substitute systems/products, as defined in PART 2, and alternate systems/products, as defined above, proposer shall submit all data described in this article, under the terms given for substitutions stated in PART 2. B. Product Data: Submit manufacturer's standard data sheets showing the following for each item of equipment, marked to correlate to equipment item markings shown in the contract documents: 1. Central Condensing unit: a. Refrigerant Type and Size of Charge. b. Cooling Capacity: Btu/h (W). c. Heating Capacity: Btu/h (W). d. Cooling Input Power: Btu/h (kw). e. Heating Input Power: Btu/h (kw). f. Operating Temperature Range, Cooling and Heating. g. Electrical Data: 1) Maximum Circuit Amps (MCA). 2) Maximum Fuse Amps (MFA). 3) Maximum Starting Current (MSC). 4) Full Load Amps (FLA). 5) Total Over Current Amps (TOCA). h. Weight and Dimensions. i. Maximum number of indoor units that can be served. j. Maximum refrigerant piping run from outdoor/condenser unit to indoor/evaporator unit. k. Maximum height difference between outdoor/condenser unit to indoor/evaporator unit, both above and below. VARIABLE REFRIGERANT VOLUME (VRV) HVAC SYSTEM

60 I. Control Options. 2. Indoor/Evaporator Units: a. Cooling Capacity: Btu/h (W). b. Heating Capacity: Btu/h (W). c. Cooling Input Power: Btu/h (kw). d. Heating Input Power: Btu/h (kw). e. Air Flow: Cubic feet per minute (Cubic meters per second). f. Fan Curves. g. External Static Pressure (ESP): Inches WG (Pa). h. Sound Pressure level: db(a). i. Electrical Data: 1) Maximum Circuit Amps (MCA). 2) Maximum Fuse Amps (MFA). 3) Maximum Starting Current (MSC). 4) Full Load Amps (FLA). 5) Total Over Current Amps (TOGA). 6) Fan Motor: HP (W). j. Maximum Lift of Built-in Condensate Pump. k. Weight and Dimensions. I. Control Options. 3. Control Panels: Complete description of options, control points, zones/groups. C. Shop Drawings: Installation drawings custom-made for this project; include as-designed HVAC layouts, locations of equipment items, refrigerant piping sizes and locations, condensate piping sizes and locations, remote sensing devices, control components, electrical connections, control wiring connections. Include: 1. Detailed piping diagrams, with branch balancing devices. 2. Condensate piping routing, size, and pump connections. 3. Detailed power wiring diagrams. 4. Detailed control wiring diagrams. 5. Locations of required access through fixed construction. 6. Drawings required by manufacturer. D. Operating and Maintenance Data: 1. Manufacturer's complete standard instructions for each unit of equipment and control panel. 2. Custom-prepared system operation, troubleshooting, and maintenance instructions and recommendations. 3. Identification of replaceable parts and local source of supply. E. Project Record Documents: Record the following: 1. As-installed routing of refrigerant piping and condensate piping. 2. Locations of access panels. 3. Locations of control panels. F. Warranty: Executed warranty, made out in Owner's name QUALITY ASSURANCE A. Manufacturer Qualifications: 1. Company that has been manufacturing variable refrigerant volume heat pump equipment for at least 5 years. 2. Company that provides system design software to installers. B. Installer Qualifications: Trained and approved by manufacturer of equipment DELIVERY, STORAGE AND HANDLING A. Deliver, store, and handle equipment and refrigerant piping according to manufacturer's recommendations. VARIABLE REFRIGERANT VOLUME (VRV) HVAC SYSTEM

61 1.08 WARRANTY A. Compressors: Provide manufacturer's warranty for six (6) years from date of installation. During the stated period, should any part fail due to defects in material and workmanship, it shall be repaired or replaced at the discretion of Daikin AC (Americas), Inc. according to Daikin's terms and conditions. All warranty service work shall be preformed by a Daikin factory trained service professional. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Basis of Design: The system design shown in the contract documents is based on equipment and system designed by Daikin AC; B. Systems designed and manufactured by other manufacturers will be considered by Owner under the terms described for substitutions with the following exceptions: 1. Substitutions: See Section Product Requirements. 2. Substitution requests will be considered only if required submittal data is complete; see article SUBMITTALS above. 3. Contractor (not equipment supplier) shall certify that the use of the substitute system and equipment will not require changes to other work or re-design by Architect. 4. Contractor or HVAC subcontractor shall certify that the substitute system will achieve the performance specified. 5. Do not assume substitution has been accepted until formal written notice has been issued by Architect HVAC SYSTEM DESIGN A. System Operation: Heating and cooling, simultaneously. 1. Zoning: Provide capability for temperature control for each individual indoor/evaporator unit independently of all other units. 2. Zoning: Provide heating/cooling selection for each individual indoor/evaporator unit independently of all other units. 3. Provide a complete functional system that achieves the specified performance based on the specified design conditions and that is designed and constructed according to the equipment manufacturer's requirements. 4. Conditioned spaces are shown on the drawings. 5. Branch selector unit locations are not shown on the drawings. 6. Required equipment unit capacities are shown on the drawings. 7. Refrigerant piping sizes are not shown on the drawings. 8. Connect equipment to condensate piping provided by others; condensate piping is shown on the drawings. B. Cooling Mode Interior Performance: 1. Daytime Setpoint: 68 degrees F (20 degrees C), plus or minus 2 degrees F (1 degrees C). 2. Setpoint Range: 57 degrees F (14 degrees C) to 77 degrees F (25 degrees C). 3. Night Setback: 78 degrees F (25 degrees C). 4. Interior Relative Humidity: 20 percent, maximum. C. Heating Mode Interior Performance: 1. Daytime Setpoint: 68 degrees F (20 degrees C), plus or minus 2 degrees F (1 degrees C). 2. Setpoint Range: 59 degrees F (15 degrees C) to 80 degrees F (27 degrees C). 3. Night Setback: 60 degrees F (15 degrees C). 4. Interior Relative Humidity: 10 percent, minimum. D. Outside Air Design Conditions: E. Energy Design Wind Speed: 25 mph (40 km/h). F. Operating Temperature Ranges: VARIABLE REFRIGERANT VOLUME (VRV) HVAC SYSTEM

62 1. Simultaneous Heating and Cooling Operating Range: minus 4 degrees F (minus 20 degrees C) to 60 degrees F (16 degrees C) dry bulb. 2. Cooling Mode Operating Range: minus 4 degrees F (minus 20 degrees C) to 110 degrees F (43 degrees C) dry bulb. 3. Heating Mode Operating Range: 0 degrees F (minus 18 degrees C) to 77 degrees F (25 degrees C) dry bulb; minus 4 degrees F (minus 20 degrees C) to 60 degrees F (16 degrees C) wet bulb; without low ambient controls or auxiliary heat source. G. Refrigerant Piping Lengths: Provide equipment capable of serving system with following piping lengths without any oil traps: 1. Minimum Piping Length from Outdoor/Central Unit(s) to Furthest Terminal Unit: 540 feet (165 m), actual; 620 feet (189 m), equivalent. 2. Total Combined Liquid Line Length: 3280 feet (1 000 m), minimum. 3. Minimum Piping Length Between Indoor Units: 49 feet (15 mm). H. Control Wiring Lengths: 1. Between Outdoor/Condenser Unit and Indoor/Evaporator Unit: 6,665 feet (2031 m), minimum. 2. Between Outdoor/Condenser Unit and Central Controller: 3,330 feet (1015 m), minimum. 3. Between Indoor/Evaporator Unit and Remote Controller: 1,665 feet (507 m). I. Controls: Provide the following control interfaces: 1. For Each Indoor/Evaporator Unit: One wall-mounted wired "local" controller, with temperature sensor; locate where indicated. 2. One central remote control panel for entire system; locate where indicated. 3. BACNet gateways sufficient to connect all units to building automation system by others; include wiring to gateways. J. Local Controllers: Wall-mounted, wired, containing temperature sensor. K. Remote Temperature Sensors: In addition to temperature sensors integral with indoor/evaporator units, provide wall-mounted, wired remote temperature sensors located in the same room for the following: 1. In-ceiling mounted units. 2. Exception: Where a local controller with temperature sensor is provided for the particular unit and is located in the same space EQUIPMENT A. All Units: Factory assembled, wired, and piped and factory tested for function and safety. 1. Refrigerant: R-41 OA. 2. Performance Certification: AHRI Certified; 3. Safety Certification: Tested to UL 1995 by UL or lntertek-etl and bearing the certification label. 4. Provide outdoor/condensing units capable of serving indoor unit capacity up to 200 percent of the capacity of the outdoor/condensing unit. 5. Provide units capable of serving the zones indicated. 6. Thermal Performance: Provide heating and cooling capacity as indicated, based on the following nominal operating conditions: 7. Energy Efficiency: Report EER and COP based on tests conducted at "full load" in accordance with AHRI 210/240 or alternate test method approved by U.S. Department of Energy. B. Electrical Characteristics: 1. Power- Condensing Units: 208 to 230 Volts, 3-phase, 60 Hz. 2. Power- Branch Selector Units: 208 to 230 Volts, single phase, 60 Hz. 3. Power - Indoor Units: 208 to 230 Volts, single phase, 60 Hz Voltage Range: 187 to 253 volts. 5. Control: 16 volts DC. VARIABLE REFRIGERANT VOLUME (VRV) HVAC SYSTEM Bid No DEC14 November 10,