AUSTIN Independent School District Contract and Procurement Services Request for Qualifications 19RFQ082 Testing and Balancing On Call Services Date November 27, 2018 December 4, 2018 December 11, 2018 December 17, 2018 December 20, 2018 January 15, 2019 February 25, 2019 Advertise/Issue Date Event Pre-Proposal Conference at 10:00 AM Austin ISD Carruth Administration Center 1111 West 6 th Street Suite B-300. PLEASE ALLOW TIME TO PARK! Due Date for Questions by 5:00 pm Questions and Answers posted on our website RFQ opening / due date at 2:00 pm CST AISD Board Meeting for review/approval Deliver Sealed Proposals to: Contact: Austin ISD Jennifer Nix Contract & Procurement Services Contract & Procurement Services 1111 West 6 th Street Phone: 512-414-2241 Building A, Suite 330 jennifer.nix@austinisd.org Austin, TX 78703 Questions must be submitted via e-mail to the contact person listed above. In the e-mail subject line, type: Questions 19RFQ082- Testing and Balancing On Call Services Q & A and Addenda will be posted on our website: www.austinisd.org/cp/bids Proposals are due no later than 2:00 pm on the date indicated. Your proposals must be delivered by mail or hand delivery in a sealed envelope or carton. Proposals received after the specified time shall not be considered. Please submit the following: Required o One (1) hard copy marked original include signed required forms Requested o One (1) digital copy on a flash drive include signed required forms o One (1) hard copy marked copy FAX, e-mail or other electronic proposals will not be accepted. Proposals must be plainly marked with name and address of the Offeror and the RFQ number and Title above. 1111 This solicitation is a request for qualifications for professional services under Texas Government Code 2270.
Section 1 The Austin ISD is accepting responses to this RFQ to contract with highly qualified and experienced HVAC test and balance firms directly with the District, reporting to the Construction Management office. These firms will not be precluded from work as sub-consultants on other projects, except Program Management. These services may be specialized and/or limited in scope and duration. Selection will be on the basis of professional qualifications. The solicitation consists of the following documents and all addenda that may be issued: Request for Qualifications Exhibit A Prospectus Attachment 1 Testing and Balancing Overview Exhibit B Agreement Between Owner and Architect/Engineer The Austin Independent School District (AISD) intends to select firms for the project noted in the Prospectus (Exhibit A ) on the basis of professional qualifications. In order to be considered for selection, firms proposing to be considered must fully complete the forms included in this Request for Qualifications (RFQ), Please follow the format listed below. Tab 1: General Information Tab 2: References Tab 3: Projects (include requested information for sub-consultants also) Tab 4: Workload (include requested information for sub-consultants also) Tab 5: Organization Chart Tab 6: Miscellaneous Cost Control Construction Administration Accelerated Schedule Energy/Utility Conservation and Sustainability Tab 7: Other Forms Authorization Form Disclosure Form Felony Conviction Notice Form Suspension and Debarment Certification Tab 8: HUB Compliance Documents
An AISD Selection Panel will evaluate all submittals with the anticipation of making recommendations to the Superintendent. The AISD Board of Trustees will take action on the consultant s selection recommendation during a regularly scheduled Board meeting, if required. AISD will conduct a pre-submission conference to allow questions to be asked related to the RFQ. Also, the pre-submission conference is an opportunity for design professionals to meet and discuss sub-consultant and teaming possibilities and Historically Underutilized Business opportunities in preparation of their responses. AISD will conduct interviews with the top ranked respondents. If selected, your firm will be contacted to schedule an interview. Attached is the AISD Agreement between Owner and Architect/Engineer (Exhibit B ). It includes various insurance provisions, including professional liability coverage, and related requirements. Since Article II of the Agreement includes provisions related to fees and fees are not part of the District s selection process, Article II has been deleted from the Agreement for purposes of the RFQ to avoid any perception to the contrary. However, please note that AISD intends to negotiate fees based on scope of work and expected effort, not a fixed percentage. More information will be given at the pre-submission conference. In the event any project for which your firm will involve roofing design, including roofing replacement, repairs, penetrations, curbs or supports for mechanical or other equipment, or the project will affect the roof in any way, you will need to include a roofing consultant in your response. Include a complete resume for the individual(s) actually performing the roofing design, including a detailed description of their qualifications, experience and credentials. AISD encourages full participation in all phases of procurement activities and shall afford a full and fair opportunity to all vendors to compete for District contracts. Historically Underutilized Businesses are businesses in which at least 51 percent of the ownership and management is by minority group members or women, or in the case of a publicly owned business, at least 51 percent of the stock is owned and managed by minority group members or women in all phases of the procurement.
Responding firms are advised to determine if they are required under Chapter 176 of the Texas Local Government Code to file a completed conflict of interest questionnaire with AISD. If completion of the questionnaire is required, the Conflict of Interest Questionnaire (Form CIQ) should be completed and submitted online at: https://www.austinisd.org/cp/cis In 2015, the Texas Legislature adopted House Bill 1295, which added section 2252.908 of the Texas Government Code. The law states that a governmental entity or state agency may not enter into certain contracts with a business entity unless the business entity submits a disclosure of interested parties to the governmental entity or state agency at the time the business entity submits the signed contract to the governmental entity or state agency. After the AISD Board of Trustees selects the Offeror, the successful Offeror will be required to complete an electronic Form 1295 ( Form 1295 ) on the Texas Ethics Commission website at https://www.ethics.state.tx.us/whatsnew/elf_info_form1295.htm and submit the completed and executed Form 1295, including the certification of filing, to AISD prior to entering into a contract with AISD in accordance with this statute. Additional information is available on the Texas Ethics Commission website at www.ethics.state.tx.us. Submission of a response to this Request for Proposals indicates the responding firm s acceptance and intended compliance with these requirements. The responding firms, or their agents, shall undertake no activities, actions, or contacts to promote or advertise their RFQ submissions to the AISD Board of Trustees, Superintendent, central office administrators, administering committees, and/or members of the Selection Panel. Violation of this provision will be grounds for disqualification of the responding firm. The responding firms, or their agents, shall undertake no activities, actions or contacts to promote or advertise their responses to the AISD Board of Trustees, Superintendent, central office administrators, or members of the Construction Management Department staff. Violation of this provision will be grounds for disqualification of the responding firm. Authorized communications are to be with the designated AISD contact person as indicated on page 1 of the RFQ. Any substantive clarification or revision of the RFQ will be made only by RFQ Addendum in accordance with Section 2. Responding firms shall not be eligible to be considered for this solicitation if the responding firms, or their agents, engaged in or attempted to engage in prohibited communications.
Section 2 AISD specifically requires that responding firms restrict all contact and questions regarding this Request for Qualifications to the Contact Person listed on the cover page. Any changes to this RFQ will be provided in the form of a written addendum to this RFQ. Such addendum will be disseminated to potential respondents by publication on AISD s web site as follows: https://www.austinisd.org/cp/bids and AISD s online planroom at: www.planroom.millerids.com. It is the obligation of each responding firm to make sure prior to submitting a response, that it has received all Addenda in connection with this RFQ. Copies of Addenda issued to this RFQ can be obtained from the Contact Person. Only those responses to inquiries which are made by formal written Addenda shall be binding. Oral and other interpretations or clarifications will be without legal effect, and shall not be binding on AISD. The responding firm must acknowledge receipt of all Addenda in its submittal. However, each responding firm will be bound by the terms of all Addenda, and its submittal will be construed to include the information contained in the Addenda, whether or not the responding firm has received them or acknowledged receipt.
TAB 1 GENERAL INFORMATION NAME OF FIRM: BUSINESS ADDRESS: TELEPHONE NUMBER: TYPE OF ORGANIZATION: (Individual, Partnership, Corporation, Association) NUMBER OF YEARS FIRM IN BUSINESS: Give a brief history of your firm, including date established, record of growth, type of work, and any specialties. What do you believe is unique about your firm s potential contribution to AISD facilities? If you want to attach a brochure or other printed material, which describes your firm s services, organization, and examples of your school projects you may do so, but it is not required. 1. Principals: Texas Architect/Engineer Registration No.: 2. Full-Time Employees (minimum 32-hours/week): No. of Registered Architects, excluding Principals: No. of Registered Engineers, excluding Principals (by type): No. of Drafters/CAD Operators: No. of Clerical Employees: 3. Part-Time Employees (minimum 16-hour/week, by type):
4. Include a resume for each principal and associate with your firm. Please feel free to provide professional citations (both nominations and actual awards). 5. Services Proposed: Services Performed by Your Firm Performed by Sub-Consultant (firm name) Architectural: o o Structural: o o Mechanical: o o Electrical: o o Civil: o o Other: o o 6. Professional Liability Insurance Have any claims been made against your firm for errors and omissions in the past five (5) years? Yes o No o If so, what was the dispensation of the claim or claims?
TAB 2 REFERENCES Provide three references for representative building projects for which Architectural/Engineering Services were performed in the last eight (8) years, beginning with projects in Austin and/or a school district (K-12) if available. 1. Project: Scope of Project: Services Performed: Client: Contact person: Telephone Number: Email: 2. Project: Scope of Project: Services Performed: Client: Contact person: Telephone Number: Email:
3. Project: Scope of Project: Services Performed: Client: Contact person: Telephone Number: Email:
TAB 3 PROJECTS Provide six (6) representative building projects for which Architectural/Engineering Services were performed in the last eight (8) years, beginning with projects in Austin and/or a school district (K-12) if available. If project was done by a principal/partner/employee while at another firm, clearly note in Services Performed. 1. Project: Scope of Project: Services Performed: Number of Change Orders: Describe: Construction Cost: Date Construction Complete: Client: Contact Person: Telephone Number:
2. Project: Scope of Project: Services Performed: Number of Change Orders: Describe: Construction Cost: Date Construction Complete: Client: Contact Person: Telephone Number: 3. Project: Scope of Project: Services Performed: Number of Change Orders: Describe: Construction Cost: Date Construction Complete: Client: Contact Person: Telephone Number:
4. Project: Scope of Project: Services Performed: Number of Change Orders: Describe: Construction Cost: Date Construction Complete: Client: Contact Person: Telephone Number: 5. Project: Scope of Project: Services Performed: Number of Change Orders: Describe: Construction Cost: Date Construction Complete: Client: Contact Person: Telephone Number:
6. Project: Scope of Project: Services Performed: Number of Change Orders: Describe: Construction Cost: Date Construction Complete: Client: Contact Person: Telephone Number:
TAB 4 WORKLOAD List current workload (five largest projects): Project Name/Type Constr. Cost % Completed Est. Compl. Date List remaining workload (combined): Number of Projects: Total Construction Cost:
Tab 5 Organization Chart Provide proposed organization chart for completing AISD project work.
Tab 6 Miscellaneous 1. Cost Control Explain the method used by your firm to arrive at anticipated construction cost and provide reasons for using the method. Provide applicable examples of project cost containment, budget management, and value engineering efforts: 2. Construction Administration Explain your construction administration procedures.
3. Accelerated Schedule Explain the methods and management techniques you use to accomplish an aggressive schedule for design and construction. Provide examples of successful projects with comparable stringent schedules. 4. Energy/Utility Conservation and Sustainability Provide a summary of your energy and utility conservation and sustainability related design experience.
Tab 7 Other Forms Provide completed Authorization Form, Felony Conviction Notice Form and Suspension and Debarment Certification Form.
AUTHORIZATION FORM The foregoing is true and correct. The Austin Independent School District, or any authorized representative of the Austin Independent School District, is authorized by the undersigned to contact any firm, institution, or person listed above to obtain information about our firm s services, financial condition, and any other information, which the Austin Independent School District might determine as being desirable. Firm: By: Title: Date:
FELONY CONVICTION NOTICE FORM Statutory citation covering notification of criminal history of contractor is found in the Texas Education Code 44.034. FELONY CONVICTION NOTIFICATION State of Texas Legislative Senate Bill No. 1, Section 44.034, Notification of Criminal History, Subsection (a), states a person or business entity that enters into a contract with a school district must give advance notice to the district if the person or an owner or operator of the business entity has been convicted of a felony. The notice must include a general description of the conduct resulting in the conviction of a felony. Subsection (b) states a school district may terminate a contract with a person or business entity if the district determines that the person or business entity failed to give notice as required by Subsection (a) or misrepresented the conduct resulting in the conviction. The district must compensate the person or business entity for services performed before the termination of the contract. THIS NOTICE IS NOT REQUIRED OF A PUBLICLY-HELD CORPORATION I, the undersigned agent for the firm named below, certify that the information concerning notification of felony convictions has been reviewed by me and the following information furnished is true to the best of my knowledge. VENDOR S NAME: AUTHORIZED COMPANY OFFICIAL S NAME: A. My firm is a publicly-held corporation, therefore, this reporting requirement is not applicable. Signature of Company Official: B. My firm is not owned nor operated by anyone who has been convicted of a felony. Signature of Company Official: C. My firm is owned or operated by the following individual(s) who has/have been convicted of a felony. Name of Felon(s): Details of Conviction(s): Signature of Company Official: (Attach additional sheet if necessary) (attach additional sheet if necessary)
CONSTRUCTION FORM AISD/SDC (Rev. Apr. 05) AUSTIN INDEPENDENT SCHOOL DISTRICT SUSPENSION AND DEBARMENT CERTIFICATION Federal Law (A-102 Common Rule and OMB Circular A-110) prohibits non-federal entities from contracting with or making subawards under covered transactions to parties that are suspended or debarred or whose principals are suspended or debarred. Covered transactions include procurement contracts for goods or services equal to or in excess of $25,000 and all non-procurement transactions (e.g., subawards to subrecipients). Contractors receiving individual awards of $25,000 or more and all subrecipients must certify that their organization and its principals are not suspended or debarred by a federal agency. Before an award of $25,000 or more can be made by your firm, you must certify that your organization and its principals are not suspended or debarred by a federal agency. I, the undersigned agent for the firm named below, certify that neither this firm nor its principals are suspended or debarred by a federal agency. VENDOR S NAME: Signature of Company Official: Date Signed: Printed name of company official signing above:
Tab 8 HUB Compliance Documents See separate HUB documents for 19RFQ082.
EXHIBIT A Minimum Qualifications of Firm: Firm shall be one which is licensed to do professional services of this specified type and as a minimum have one professional engineer with current registration to perform such professional services. Firm shall be a member in good standing of Associated Air Balance Council (AABC) and listed in its current directory. Firm shall have a minimum of five (5) years of experience. SCOPE OF WORK The Owner requests responses from qualified and experienced firms for providing HVAC test and balance services for the Austin ISD 2017 Bond Program and other projects managed by AISD Construction Management. The testing, adjusting and balancing (TAB) of air conditioning systems will be performed by an impartial independent technical firm whose operations are limited only to the field of professional TAB. TAB work shall be done under direct supervision of a professional engineer, licensed in the State of Texas, and employed by the TAB firm. Firm s Physical Presence It is the desire of the Owner that the successful firms have a physical presence within the Austin area. Community contact, design reviews, interaction with local governmental authorities having jurisdiction, construction observation, and other requirements of the required scope of services will require daily physical presence during various phases of the work, which would be difficult to perform from a remote location or on an intermittent schedule. Should any firm not intend to locate within Austin or surrounding counties, this must be clearly stated within the SOQ. An explanation of how the needs of the project as described in the Scope of Work can be fulfilled from the office used must be included in the SOQ. Services The District anticipates constructing new buildings and additions and providing renovations to existing buildings in the 2017 Bond Program. Independent Testing Agencies will be required for testing and balancing of the HVAC systems.
EXHIBIT A PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Balancing Air Systems: a. Constant-volume air systems. b. Variable-air-volume systems. 2. Balancing Hydronic Piping Systems: a. Constant-flow hydronic systems. b. Variable-flow hydronic systems. c. Primary-secondary hydronic systems. 1.3 DEFINITIONS A. AABC: Associated Air Balance Council. B. TAB: Testing, adjusting, and balancing. C. TABB: Testing, Adjusting, and Balancing Bureau. D. TAB Specialist: An entity engaged to perform TAB Work. 1.4 SUBMITTALS A. Qualification Data: Within 15 days of Contractor's Notice to Proceed, submit documentation that the TAB contractor and this Project's TAB team members meet the qualifications specified in "Quality Assurance" Article. B. Contract Documents Examination Report: Within 15 days of Contractor's Notice to Proceed, submit the Contract Documents review report as specified in Part 3. C. Strategies and Procedures Plan: Within 30 days of Contractor's Notice to Proceed, submit TAB strategies and step-by-step procedures as specified in "Preparation" Article. D. Certified TAB reports. E. Sample report forms. F. Instrument calibration reports, to include the following: 1. Instrument type and make.
EXHIBIT A 2. Serial number. 3. Application. 4. Dates of use. 5. Dates of calibration. 1.5 QUALITY ASSURANCE A. TAB Contractor Qualifications: Engage a TAB entity certified by AABC. 1. TAB Field Supervisor: Employee of the TAB contractor and certified by AABC. 2. TAB Technician: Employee of the TAB contractor and who is certified by AABC as a TAB technician. B. TAB Conference: Meet with Architect on approval of the TAB strategies and procedures plan to develop a mutual understanding of the details. Require the participation of the TAB field supervisor and technicians. Provide 7 days' advance notice of scheduled meeting time and location. 1. Agenda Items: a. The Contract Documents examination report. b. The TAB plan. c. Coordination and cooperation of trades and subcontractors. d. Coordination of documentation and communication flow. C. Certify TAB field data reports and perform the following: 1. Review field data reports to validate accuracy of data and to prepare certified TAB reports. 2. Certify that the TAB team complied with the approved TAB plan and the procedures specified and referenced in this Specification. D. TAB Report Forms: Use standard TAB contractor's forms approved by Architect. E. Instrumentation Type, Quantity, Accuracy, and Calibration: As described in ASHRAE 111, Section 5, "Instrumentation." 1.6 PROJECT CONDITIONS A. Partial Owner Occupancy: Owner may occupy completed areas of building before Substantial Completion. Cooperate with Owner during TAB operations to minimize conflicts with Owner's operations. 1.7 COORDINATION A. Notice: Provide 7 days' advance notice for each test. Include scheduled test dates and times. B. Perform TAB after leakage and pressure tests on air and water distribution systems have been satisfactorily completed.
EXHIBIT A PART 2 - PRODUCTS (Not Applicable) PART 3 - EXECUTION 3.1 EXAMINATION A. Examine the Contract Documents to become familiar with Project requirements and to discover conditions in systems' designs that may preclude proper TAB of systems and equipment. B. Examine systems for installed balancing devices, such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Verify that locations of these balancing devices are accessible. C. Examine the approved submittals for HVAC systems and equipment. D. Examine design data including HVAC system descriptions, statements of design assumptions for environmental conditions and systems' output, and statements of philosophies and assumptions about HVAC system and equipment controls. E. Examine ceiling plenums and underfloor air plenums used for supply, return, or relief air to verify that they meet the leakage class of connected ducts as specified in Division 23 Section "Metal Ducts" and are properly separated from adjacent areas. Verify that penetrations in plenum walls are sealed and fire-stopped if required. F. Examine equipment performance data including fan and pump curves. 1. Relate performance data to Project conditions and requirements, including system effects that can create undesired or unpredicted conditions that cause reduced capacities in all or part of a system. 2. Calculate system-effect factors to reduce performance ratings of HVAC equipment when installed under conditions different from the conditions used to rate equipment performance. To calculate system effects for air systems, use tables and charts found in AMCA 201, "Fans and Systems," or in SMACNA's "HVAC Systems - Duct Design." Compare results with the design data and installed conditions. G. Examine system and equipment installations and verify that field quality-control testing, cleaning, and adjusting specified in individual Sections have been performed. H. Examine test reports specified in individual system and equipment Sections. I. Examine HVAC equipment and filters and verify that bearings are greased, belts are aligned and tight, and equipment with functioning controls is ready for operation. J. Examine terminal units, such as variable-air-volume boxes, and verify that they are accessible and their controls are connected and functioning. K. Examine strainers. Verify that startup screens are replaced by permanent screens with indicated perforations. L. Examine three-way valves for proper installation for their intended function of diverting or mixing fluid flows. M. Examine heat-transfer coils for correct piping connections and for clean and straight fins.
EXHIBIT A N. Examine system pumps to ensure absence of entrained air in the suction piping. O. Examine operating safety interlocks and controls on HVAC equipment. P. Report deficiencies discovered before and during performance of TAB procedures. Observe and record system reactions to changes in conditions. Record default set points if different from indicated values. 3.2 PREPARATION A. Prepare a TAB plan that includes strategies and step-by-step procedures. B. Complete system-readiness checks and prepare reports. Verify the following: 1. Permanent electrical-power wiring is complete. 2. Hydronic systems are filled, clean, and free of air. 3. Automatic temperature-control systems are operational. 4. Equipment and duct access doors are securely closed. 5. Balance, smoke, and fire dampers are open. 6. Isolating and balancing valves are open and control valves are operational. 7. Ceilings are installed in critical areas where air-pattern adjustments are required and access to balancing devices is provided. 8. Windows and doors can be closed so indicated conditions for system operations can be met. 3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING A. Perform testing and balancing procedures on each system according to the procedures contained in AABC's "National Standards for Total System Balance and in this Section. 1. Comply with requirements in ASHRAE 62.1-2004, Section 7.2.2, "Air Balancing." 2. B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the minimum extent necessary for TAB procedures. 1. After testing and balancing, patch probe holes in ducts with same material and thickness as used to construct ducts. 2. After testing and balancing, install test ports and duct access doors that comply with requirements in Division 23 Section "Air Duct Accessories." 3. Install and join new insulation that matches removed materials. Restore insulation, coverings, vapor barrier, and finish according to Division 23 Section "HVAC Insulation." C. Mark equipment and balancing devices, including damper-control positions, valve position indicators, fan-speed-control levers, and similar controls and devices, with paint or other suitable, permanent identification material to show final settings. D. Take and report testing and balancing measurements in inch-pound (IP) units.
EXHIBIT A 3.4 GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and recommended testing procedures. Crosscheck the summation of required outlet volumes with required fan volumes. B. Prepare schematic diagrams of systems' "as-built" duct layouts. C. For variable-air-volume systems, develop a plan to simulate diversity. D. Determine the best locations in main and branch ducts for accurate duct-airflow measurements. E. Check airflow patterns from the outdoor-air louvers and dampers and the return- and exhaust-air dampers through the supply-fan discharge and mixing dampers. F. Locate start-stop and disconnect switches, electrical interlocks, and motor starters. G. Verify that motor starters are equipped with properly sized thermal protection. H. Check dampers for proper position to achieve desired airflow path. I. Check for airflow blockages. J. Check condensate drains for proper connections and functioning. K. Check for proper sealing of air-handling-unit components. L. Verify that air duct system is sealed as specified in Division 23 Section "Metal Ducts." 3.5 PROCEDURES FOR CONSTANT-VOLUME AIR SYSTEMS A. Adjust fans to deliver total indicated airflows within the maximum allowable fan speed listed by fan manufacturer. 1. Measure total airflow. a. Where sufficient space in ducts is unavailable for Pitot-tube traverse measurements, measure airflow at terminal outlets and inlets and calculate the total airflow. 2. Measure fan static pressures as follows to determine actual static pressure: a. Measure outlet static pressure as far downstream from the fan as practical and upstream from restrictions in ducts such as elbows and transitions. b. Measure static pressure directly at the fan outlet or through the flexible connection. c. Measure inlet static pressure of single-inlet fans in the inlet duct as near the fan as possible, upstream from the flexible connection, and downstream from duct restrictions. d. Measure inlet static pressure of double-inlet fans through the wall of the plenum that houses the fan. 3. Measure static pressure across each component that makes up an air-handling unit, rooftop unit, and other air-handling and -treating equipment. a. Report the cleanliness status of filters and the time static pressures are measured.
EXHIBIT A 4. Measure static pressures entering and leaving other devices, such as sound traps, heatrecovery equipment, and air washers, under final balanced conditions. 5. Review Record Documents to determine variations in design static pressures versus actual static pressures. Calculate actual system-effect factors. Recommend adjustments to accommodate actual conditions. 6. Obtain approval from [Architect] [Owner] [Construction Manager] [Commissioning Authority] for adjustment of fan speed higher or lower than indicated speed. Comply with requirements in Division 23 Sections for air-handling units for adjustment of fans, belts, and pulley sizes to achieve indicated air-handling-unit performance. 7. Do not make fan-speed adjustments that result in motor overload. Consult equipment manufacturers about fan-speed safety factors. Modulate dampers and measure fan-motor amperage to ensure that no overload will occur. Measure amperage in full-cooling, fullheating, economizer, and any other operating mode to determine the maximum required brake horsepower. B. Adjust volume dampers for main duct, submain ducts, and major branch ducts to indicated airflows within specified tolerances. 1. Measure airflow of submain and branch ducts. a. Where sufficient space in submain and branch ducts is unavailable for Pitot-tube traverse measurements, measure airflow at terminal outlets and inlets and calculate the total airflow for that zone. 2. Measure static pressure at a point downstream from the balancing damper, and adjust volume dampers until the proper static pressure is achieved. 3. Remeasure each submain and branch duct after all have been adjusted. Continue to adjust submain and branch ducts to indicated airflows within specified tolerances. C. Measure air outlets and inlets without making adjustments. 1. Measure terminal outlets using a direct-reading hood or outlet manufacturer's written instructions and calculating factors. D. Adjust air outlets and inlets for each space to indicated airflows within specified tolerances of indicated values. Make adjustments using branch volume dampers rather than extractors and the dampers at air terminals. 1. Adjust each outlet in same room or space to within specified tolerances of indicated quantities without generating noise levels above the limitations prescribed by the Contract Documents. 2. Adjust patterns of adjustable outlets for proper distribution without drafts. 3.6 PROCEDURES FOR VARIABLE-AIR-VOLUME SYSTEMS A. Compensating for Diversity: When the total airflow of all terminal units is more than the indicated airflow of the fan, place a selected number of terminal units at a minimum set-point airflow with the remainder at maximum-airflow condition until the total airflow of the terminal units equals the indicated airflow of the fan. Select the reduced-airflow terminal units so they are distributed evenly among the branch ducts. B. Pressure-Independent, Variable-Air-Volume Systems: After the fan systems have been adjusted, adjust the variable-air-volume systems as follows:
EXHIBIT A 1. Set outdoor-air dampers at minimum, and set return- and exhaust-air dampers at a position that simulates full-cooling load. 2. Select the terminal unit that is most critical to the supply-fan airflow and static pressure. Measure static pressure. Adjust system static pressure so the entering static pressure for the critical terminal unit is not less than the sum of the terminal-unit manufacturer's recommended minimum inlet static pressure plus the static pressure needed to overcome terminal-unit discharge system losses. 3. Measure total system airflow. Adjust to within indicated airflow. 4. Set terminal units at maximum airflow and adjust controller or regulator to deliver the designed maximum airflow. Use terminal-unit manufacturer's written instructions to make this adjustment. When total airflow is correct, balance the air outlets downstream from terminal units the same as described for constant-volume air systems. 5. Set terminal units at minimum airflow and adjust controller or regulator to deliver the designed minimum airflow. Check air outlets for a proportional reduction in airflow the same as described for constant-volume air systems. a. If air outlets are out of balance at minimum airflow, report the condition but leave outlets balanced for maximum airflow. 6. Remeasure the return airflow to the fan while operating at maximum return airflow and minimum outdoor airflow. a. Adjust the fan and balance the return-air ducts and inlets the same as described for constant-volume air systems. 7. Measure static pressure at the most critical terminal unit and adjust the static-pressure controller at the main supply-air sensing station to ensure that adequate static pressure is maintained at the most critical unit. 8. Record final fan-performance data. 3.7 GENERAL PROCEDURES FOR HYDRONIC SYSTEMS A. Prepare test reports with pertinent design data, and number in sequence starting at pump to end of system. Check the sum of branch-circuit flows against the approved pump flow rate. Correct variations that exceed plus or minus 5 percent. B. Prepare schematic diagrams of systems' "as-built" piping layouts. C. Prepare hydronic systems for testing and balancing according to the following, in addition to the general preparation procedures specified above: 1. Open all manual valves for maximum flow. 2. Check liquid level in expansion tank. 3. Check makeup water-station pressure gage for adequate pressure for highest vent. 4. Check flow-control valves for specified sequence of operation, and set at indicated flow. 5. Set differential-pressure control valves at the specified differential pressure. Do not set at fully closed position when pump is positive-displacement type unless several terminal valves are kept open. 6. Set system controls so automatic valves are wide open to heat exchangers. 7. Check pump-motor load. If motor is overloaded, throttle main flow-balancing device so motor nameplate rating is not exceeded. 8. Check air vents for a forceful liquid flow exiting from vents when manually operated.
EXHIBIT A 3.8 PROCEDURES FOR CONSTANT-FLOW HYDRONIC SYSTEMS A. Measure water flow at pumps. Use the following procedures except for positive-displacement pumps: 1. Verify impeller size by operating the pump with the discharge valve closed. Read pressure differential across the pump. Convert pressure to head and correct for differences in gage heights. Note the point on manufacturer's pump curve at zero flow and verify that the pump has the intended impeller size. a. If impeller sizes must be adjusted to achieve pump performance, obtain approval from Architect and comply with requirements in Division 23 Section "Hydronic Pumps." 2. Check system resistance. With all valves open, read pressure differential across the pump and mark pump manufacturer's head-capacity curve. Adjust pump discharge valve until indicated water flow is achieved. a. Monitor motor performance during procedures and do not operate motors in overload conditions. 3. Verify pump-motor brake horsepower. Calculate the intended brake horsepower for the system based on pump manufacturer's performance data. Compare calculated brake horsepower with nameplate data on the pump motor. Report conditions where actual amperage exceeds motor nameplate amperage. 4. Report flow rates that are not within plus or minus 10 percent of design. B. Measure flow at all automatic flow control valves to verify that valves are functioning as designed. C. Measure flow at all pressure-independent characterized control valves, with valves in fully open position, to verify that valves are functioning as designed. D. Set calibrated balancing valves, if installed, at calculated presettings. E. Measure flow at all stations and adjust, where necessary, to obtain first balance. 1. System components that have Cv rating or an accurately cataloged flow-pressure-drop relationship may be used as a flow-indicating device. F. Measure flow at main balancing station and set main balancing device to achieve flow that is 5 percent greater than indicated flow. G. Adjust balancing stations to within specified tolerances of indicated flow rate as follows: 1. Determine the balancing station with the highest percentage over indicated flow. 2. Adjust each station in turn, beginning with the station with the highest percentage over indicated flow and proceeding to the station with the lowest percentage over indicated flow. 3. Record settings and mark balancing devices. H. Measure pump flow rate and make final measurements of pump amperage, voltage, rpm, pump heads, and systems' pressures and temperatures including outdoor-air temperature. I. Measure the differential-pressure-control-valve settings existing at the conclusion of balancing. J. Check settings and operation of each safety valve. Record settings.
EXHIBIT A 3.9 PROCEDURES FOR VARIABLE-FLOW HYDRONIC SYSTEMS A. Balance systems with automatic two- and three-way control valves by setting systems at maximum flow through heat-exchange terminals and proceed as specified above for hydronic systems. 3.10 PROCEDURES FOR PRIMARY-SECONDARY HYDRONIC SYSTEMS A. Balance the primary circuit flow first and then balance the secondary circuits. 3.11 PROCEDURES FOR MOTORS A. Motors, 1/2 HP and Larger: Test at final balanced conditions and record the following data: 1. Manufacturer's name, model number, and serial number. 2. Motor horsepower rating. 3. Motor rpm. 4. Efficiency rating. 5. Nameplate and measured voltage, each phase. 6. Nameplate and measured amperage, each phase. 7. Starter thermal-protection-element rating. B. Motors Driven by Variable-Frequency Controllers: Test for proper operation at speeds varying from minimum to maximum. Test the manual bypass of the controller to prove proper operation. Record observations including name of controller manufacturer, model number, serial number, and nameplate data. 3.12 PROCEDURES FOR CONDENSING UNITS A. Verify proper rotation of fans. B. Measure entering- and leaving-air temperatures. C. Record compressor data. 3.13 PROCEDURES FOR TESTING, ADJUSTING, AND BALANCING EXISTING SYSTEMS 3.14 TOLERANCES A. Set HVAC system's air flow rates and water flow rates within the following tolerances: 1. Supply, Return, and Exhaust Fans and Equipment with Fans: Plus or minus 10 percent. 2. Air Outlets and Inlets: Plus or minus 10 percent. 3. Heating-Water Flow Rate: Plus or minus 10 percent. 4. Cooling-Water Flow Rate: Plus or minus 10 percent. 3.15 REPORTING A. Initial Construction-Phase Report: Based on examination of the Contract Documents as specified in "Examination" Article, prepare a report on the adequacy of design for systems' balancing devices. Recommend changes and additions to systems' balancing devices to facilitate proper
EXHIBIT A performance measuring and balancing. Recommend changes and additions to HVAC systems and general construction to allow access for performance measuring and balancing devices. B. Status Reports: monthly progress reports to describe completed procedures, procedures in progress, and scheduled procedures. Include a list of deficiencies and problems found in systems being tested and balanced. Prepare a separate report for each system and each building floor for systems serving multiple floors. 3.16 FINAL REPORT A. General: Prepare a certified written report; tabulate and divide the report into separate sections for tested systems and balanced systems. 1. Include a certification sheet at the front of the report's binder, signed and sealed by the certified testing and balancing engineer. 2. Include a list of instruments used for procedures, along with proof of calibration. B. Final Report Contents: In addition to certified field-report data, include the following: 1. Pump curves. 2. Fan curves. 3. Manufacturers' test data. 4. Field test reports prepared by system and equipment installers. 5. Other information relative to equipment performance; do not include Shop Drawings and product data. C. General Report Data: In addition to form titles and entries, include the following data: 1. Title page. 2. Name and address of the TAB contractor. 3. Project name. 4. Project location. 5. Architect's name and address. 6. Engineer's name and address. 7. Contractor's name and address. 8. Report date. 9. Signature of TAB supervisor who certifies the report. 10. Table of Contents with the total number of pages defined for each section of the report. Number each page in the report. 11. Summary of contents including the following: a. Indicated versus final performance. b. Notable characteristics of systems. c. Description of system operation sequence if it varies from the Contract Documents. 12. Nomenclature sheets for each item of equipment. 13. Data for terminal units, including manufacturer's name, type, size, and fittings. 14. Notes to explain why certain final data in the body of reports vary from indicated values. 15. Test conditions for fans and pump performance forms including the following: a. Settings for outdoor-, return-, and exhaust-air dampers. b. Conditions of filters. c. Cooling coil, wet- and dry-bulb conditions. d. Face and bypass damper settings at coils.
EXHIBIT A e. Fan drive settings including settings and percentage of maximum pitch diameter. f. Inlet vane settings for variable-air-volume systems. g. Settings for supply-air, static-pressure controller. h. Other system operating conditions that affect performance. D. System Diagrams: Include schematic layouts of air and hydronic distribution systems. Present each system with single-line diagram and include the following: 1. Quantities of outdoor, supply, return, and exhaust airflows. 2. Water and steam flow rates. 3. Duct, outlet, and inlet sizes. 4. Pipe and valve sizes and locations. 5. Terminal units. 6. Balancing stations. 7. Position of balancing devices. E. Air-Handling-Unit Test Reports: For air-handling units with coils, include the following: 1. Unit Data: a. Unit identification. b. Location. c. Make and type. d. Model number and unit size. e. Manufacturer's serial number. f. Unit arrangement and class. g. Discharge arrangement. h. Sheave make, size in inches (mm), and bore. i. Center-to-center dimensions of sheave, and amount of adjustments in inches (mm). j. Number, make, and size of belts. k. Number, type, and size of filters. 2. Motor Data: a. Motor make, and frame type and size. b. Horsepower and rpm. c. Volts, phase, and hertz. d. Full-load amperage and service factor. e. Sheave make, size in inches (mm), and bore. f. Center-to-center dimensions of sheave, and amount of adjustments in inches (mm). 3. Test Data (Indicated and Actual Values): a. Total air flow rate in cfm (L/s). b. Total system static pressure in inches wg (Pa). c. Fan rpm. d. Discharge static pressure in inches wg (Pa). e. Filter static-pressure differential in inches wg (Pa). f. Preheat-coil static-pressure differential in inches wg (Pa). g. Cooling-coil static-pressure differential in inches wg (Pa). h. Heating-coil static-pressure differential in inches wg (Pa). i. Outdoor airflow in cfm (L/s). j. Return airflow in cfm (L/s). k. Outdoor-air damper position. l. Return-air damper position.
EXHIBIT A m. Vortex damper position. F. Apparatus-Coil Test Reports: 1. Coil Data: a. System identification. b. Location. c. Coil type. d. Number of rows. e. Fin spacing in fins per inch (mm) o.c. f. Make and model number. g. Face area in sq. ft. (sq. m). h. Tube size in NPS (DN). i. Tube and fin materials. j. Circuiting arrangement. 2. Test Data (Indicated and Actual Values): a. Air flow rate in cfm (L/s). b. Average face velocity in fpm (m/s). c. Air pressure drop in inches wg (Pa). d. Outdoor-air, wet- and dry-bulb temperatures in deg F (deg C). e. Return-air, wet- and dry-bulb temperatures in deg F (deg C). f. Entering-air, wet- and dry-bulb temperatures in deg F (deg C). g. Leaving-air, wet- and dry-bulb temperatures in deg F (deg C). h. Water flow rate in gpm (L/s). i. Water pressure differential in feet of head or psig (kpa). j. Entering-water temperature in deg F (deg C). k. Leaving-water temperature in deg F (deg C). l. Refrigerant expansion valve and refrigerant types. m. Refrigerant suction pressure in psig (kpa). n. Refrigerant suction temperature in deg F (deg C). o. Inlet steam pressure in psig (kpa). G. Fan Test Reports: For supply, return, and exhaust fans, include the following: 1. Fan Data: a. System identification. b. Location. c. Make and type. d. Model number and size. e. Manufacturer's serial number. f. Arrangement and class. g. Sheave make, size in inches (mm), and bore. h. Center-to-center dimensions of sheave, and amount of adjustments in inches (mm). 2. Motor Data: a. Motor make, and frame type and size. b. Horsepower and rpm. c. Volts, phase, and hertz. d. Full-load amperage and service factor. e. Sheave make, size in inches (mm), and bore.
EXHIBIT A f. Center-to-center dimensions of sheave, and amount of adjustments in inches (mm). g. Number, make, and size of belts. 3. Test Data (Indicated and Actual Values): a. Total airflow rate in cfm (L/s). b. Total system static pressure in inches wg (Pa). c. Fan rpm. d. Discharge static pressure in inches wg (Pa). e. Suction static pressure in inches wg (Pa). H. Round, Flat-Oval, and Rectangular Duct Traverse Reports: Include a diagram with a grid representing the duct cross-section and record the following: 1. Report Data: a. System and air-handling-unit number. b. Location and zone. c. Traverse air temperature in deg F (deg C). d. Duct static pressure in inches wg (Pa). e. Duct size in inches (mm). f. Duct area in sq. ft. (sq. m). g. Indicated air flow rate in cfm (L/s). h. Indicated velocity in fpm (m/s). i. Actual air flow rate in cfm (L/s). j. Actual average velocity in fpm (m/s). k. Barometric pressure in psig (Pa). I. Air-Terminal-Device Reports: 1. Unit Data: a. System and air-handling unit identification. b. Location and zone. c. Apparatus used for test. d. Area served. e. Make. f. Number from system diagram. g. Type and model number. h. Size. i. Effective area in sq. ft. (sq. m). 2. Test Data (Indicated and Actual Values): a. Air flow rate in cfm (L/s). b. Air velocity in fpm (m/s). c. Preliminary air flow rate as needed in cfm (L/s). d. Preliminary velocity as needed in fpm (m/s). e. Final air flow rate in cfm (L/s). f. Final velocity in fpm (m/s). g. Space temperature in deg F (deg C). J. System-Coil Reports: For reheat coils and water coils of terminal units, include the following: 1. Unit Data:
EXHIBIT A a. System and air-handling-unit identification. b. Location and zone. c. Room or riser served. d. Coil make and size. e. Flowmeter type. 2. Test Data (Indicated and Actual Values): a. Air flow rate in cfm (L/s). b. Entering-water temperature in deg F (deg C). c. Leaving-water temperature in deg F (deg C). d. Water pressure drop in feet of head or psig (kpa). e. Entering-air temperature in deg F (deg C). f. Leaving-air temperature in deg F (deg C). K. Pump Test Reports: Calculate impeller size by plotting the shutoff head on pump curves and include the following: 1. Unit Data: a. Unit identification. b. Location. c. Service. d. Make and size. e. Model number and serial number. f. Water flow rate in gpm (L/s). g. Water pressure differential in feet of head or psig (kpa). h. Required net positive suction head in feet of head or psig (kpa). i. Pump rpm. j. Impeller diameter in inches (mm). k. Motor make and frame size. l. Motor horsepower and rpm. m. Voltage at each connection. n. Amperage for each phase. o. Full-load amperage and service factor. p. Seal type. 2. Test Data (Indicated and Actual Values): a. Static head in feet of head or psig (kpa). b. Pump shutoff pressure in feet of head or psig (kpa). c. Actual impeller size in inches (mm). d. Full-open flow rate in gpm (L/s). e. Full-open pressure in feet of head or psig (kpa). f. Final discharge pressure in feet of head or psig (kpa). g. Final suction pressure in feet of head or psig (kpa). h. Final total pressure in feet of head or psig (kpa). i. Final water flow rate in gpm (L/s). j. Voltage at each connection. k. Amperage for each phase. L. Instrument Calibration Reports: 1. Report Data: