23 08 00.00 10 COMMISIONING OF HVAC SYSTEMS.doc

SECTION 23 08 00.00 10

COMMISIONING OF HVAC SYSTEMS

PART 1 GENERAL

1.1 REFERENCES

1.1.1 The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only. Unless other wise noted, the latest published version and/or revision shall be used.

1.1.1.1 ASSOCIATED AIR BALANCE COUNCIL (AABC)

a. ACG Commissioning Guideline Commissioning Guideline

1.1.1.2 NATIONAL ENVIRONMENTAL BALANCING BUREAU (NEBB)

a. NEBB Commissioning Standard Procedural Standards for Building Systems Commissioning

1.1.1.3 SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION (SMACNA)

a. SMACNA Commissioning Manual HVAC Systems Commissioning Manual

1.2 SUBMITTALS

1.2.1 Government approval may be required on any of the following items. Items requiring submittals will be listed on the AF Form 66. Provide copies of all submittals per the requirements in Section 01 33 00, Submittal Procedures, or as listed on the AF Form 66.

1.2.1.1 SD-02 Shop Drawings

a. Commissioning Plan

(1) Commissioning Plan prepared in accordance with Commissioning Standard, no later than 14 days after the approval of the Commissioning Specialist.

1.2.1.2 SD-03 Product Data

a. Pre-Functional Performance Test Checklists

(1) At least 14 days prior to the start of Pre-Functional Performance Test Checks. The schedule for the test checks shall be submitted at least 14 days prior to the start of Pre-Functional Performance Test Checks.

b. Functional Performance Tests

(1) Test procedures at least 14 days prior to the start of Functional Performance Tests. The schedule for the tests at least 14 days prior to the start of Functional Performance Tests.

1.2.1.3 SD-06 Test Reports

a. Commissioning Report

(1) No later than 14 days after completion of Functional Performance Tests.

1.2.1.4 SD-07 Certificates

a. Commissioning Firm

(1) Certification of the proposed Commissioning Firm's qualifications by one of the following ACG, NEBB, or TABB to perform the duties specified herein and in other related Sections, no later than 21 days after the Notice to Proceed. The documentation shall include the date that the Certification was initially granted and the date that the current Certification expires. Any lapses in Certification of the proposed Commissioning Firm or disciplinary action taken by ACG, NEBB, or TABB against the proposed Commissioning Firm shall be described in detail.

b. Commissioning Specialist

(1) Certification of the proposed Commissioning Specialist's qualifications by one of the following ACG, NEBB, or TABB to perform the duties specified herein and in other related Sections, no later than 21 days after the Notice to Proceed. The documentation shall include the date that the Certification was initially granted and the date that the current Certification expires. Any lapses in Certification of the proposed Commissioning Specialist or disciplinary action taken by ACG, NEBB, or TABB against the proposed Commissioning Specialist shall be described in detail.

1.3 SIMILAR TERMS

1.3.1 In some instances, terminology differs between the Contract and the Commissioning Standard primarily because the intent of this Section is to use the industry standards specified, along with additional requirements listed herein to produce optimal results. The following table of similar terms is provided for clarification only. Contract requirements take precedent over the corresponding ACG, NEBB, or TABB requirements where differences exist.

SIMILAR TERMS

Contract Term

ACG

NEBB

TABB

Commissioning

ACG

Procedural

SMACNA HVAC

Standard Commissioning Standards for

Commissioning

Guideline

Building Systems Guideline

ACG Certified

NEBB Qualified TABB Certified

Specialist Commissioning

Agent

Administrator Supervisor

1.4 COMMISIONING STANDARDS

1.4.1 Commissioning shall be performed in accordance with the requirements of the standard under which the Commissioning Firm's qualifications are approved, i.e., ACG Commissioning Guideline, NEBB Commissioning Standard, or SMACNA Commissioning Manual unless otherwise stated herein. All recommendations and suggested practices contained in the Commissioning Standard shall be considered mandatory. The Commissioning Standard shall be used for all aspects of Commissioning, including qualifications for the Commissioning Firm and Specialist and calibration of Commissioning instruments. Where the instrument manufacturer calibration recommendations are more stringent than those listed in the Commissioning Standard, the manufacturer's recommendations shall be adhered to. All quality assurance provisions of the Commissioning Standard such as performance guarantees shall be part of this contract. For systems or system components not covered in the Commissioning Standard, Commissioning procedures shall be developed by the Commissioning Specialist. Where new procedures, requirements, etc., applicable to the Contract requirements have been published or adopted by the body responsible for the Commissioning Standard used (ACG, NEBB, or TABB), the requirements and recommendations contained in these procedures and requirements shall be considered mandatory.

1.5 QUALIFICATIONS

1.5.1 Commissioning Firm

1.5.1.1 The Commissioning Firm shall be either a member of ACG or certified by the NEBB or the TABB and certified in all categories and functions where measurements or performance are specified on the plans and specifications. The certification shall be maintained for the entire duration of duties specified herein. If, for any reason, the firm loses subject certification during this period, the Contractor shall immediately notify the Contracting Officer and submit another Commissioning Firm for approval. Any firm that has been the subject of disciplinary action by the ACG, the NEBB, or the TABB within the five years preceding Project Solicitation shall not be eligible to perform any duties related to the HVAC systems, including Commissioning. All work specified in this Section and in other related Sections to be performed by the Commissioning Firm shall be considered invalid if the Commissioning Firm loses its certification prior to Contract completion and must be performed by an approved successor. These Commissioning services are to assist the prime Contractor in performing the quality oversight for which it is responsible. The Commissioning Firm shall be a subcontractor of the prime Contractor and shall be financially and corporately independent of all other subContractors. The Commissioning Firm shall report to and be paid by the prime Contractor.

1.5.2 Commissioning Specialist

1.5.2.1 The Commissioning Specialist shall be an ACG Certified Commissioning Agent, a NEBB Qualified Commissioning Administrator, or a TABB Certified Commissioning Supervisor and shall be an employee of the approved Commissioning Firm. The certification shall be maintained for the entire duration of duties specified herein. If, for any reason, the Commissioning Specialist loses subject certification during this period, the Contractor shall immediately notify the Contracting Officer and submit another Commissioning Specialist for approval. Any individual that has been the subject of disciplinary action by the ACG, the NEBB, or the TABB within the five years preceding Contract Award shall not be eligible to perform any duties related to the HVAC systems, including Commissioning. All work specified in this Section and in other related Sections performed by the Commissioning Specialist shall be considered invalid if the Commissioning Specialist loses his certification prior to Contract completion and must be performed by the approved successor.

1.6 COMMISSIONING SPECIALIST RESPONSIBILITIES

1.6.1 All Commissioning work specified herein and in related sections shall be performed under the direct guidance of the Commissioning Specialist. The Commissioning Specialist shall prepare the Commissioning Plan, which will be a comprehensive schedule and shall include all submittal requirements for procedures, notifications, reports and the Commissioning Report. After approval of the Commissioning Plan, the Contractor shall revise the Contract NAS schedule to reflect the schedule requirements in the Commissioning Plan.

1.7 SEQUENCING AND SCHEDULING

1.7.1 The work described in this Section shall begin only after all work required in related Sections has been successfully completed, and all test and inspection reports and operation and maintenance manuals required in these Sections have been submitted and approved. Pre-Functional Performance Test Checklists shall be performed at appropriate times during the construction phase of the Contract.

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION

3.1 COMMISSIONING TEAM AND TEST FORMS AND CHECKLISTS

3.1.1 The Contractor shall designate Contractor team members to participate in the Pre- Functional Performance Test Checklists and the Functional Performance Tests specified herein. In addition, the Government team members will include a representative of the Contracting Officer, the CE's Representative, and the Using Agency's Representative. The team members shall be as follows:

3.1.1.1 Designation Function

a. A Contractor's Commissioning Specialist

b. M Contractor's Mechanical Representative

c. E Contractor's Electrical Representative

d. T Contractor's Testing, Adjusting, and Balancing (TAB) Specialist

e. C Contractor's Controls Representative

f. D CE Representative

g. O Contracting Officer's Representative

h. U Using Agency's Representative

3.1.1.2 Appendices A and B shall be completed by the commissioning team. Acceptance by each commissioning team member of each Pre- Functional Performance Test Checklist item shall be indicated by initials and date unless an "X" is shown indicating that participation by that individual is not required. Acceptance by each commissioning team member of each functional performance test item shall be indicated by signature and date.

3.2 TESTS

The pre-functional performance test checklists and functional performance tests shall be performed in a manner that essentially duplicates the checking, testing, and inspection methods established in the related Sections. Where checking, testing, and inspection methods are not specified in other Sections, methods shall be established which will provide the information required. Testing and verification required by this section shall be performed during the Commissioning phase. Requirements in related Sections are independent from the requirements of this Section and shall not be used to satisfy any of the requirements specified in this Section. The Contractor shall provide all materials, services, and labor required to perform the pre- functional performance tests checks and functional performance tests. A functional performance test shall be aborted if any system deficiency prevents the successful completion of the test or if any participating non-Government commissioning team member of which participation is specified is not present for the test.

3.2.1 Pre-Functional Performance Test Checklists

3.2.1.1 Pre-Functional Performance Test Checklists shall be performed for the items indicated in Appendix A. Deficiencies discovered during these checks shall be corrected and re-inspected in accordance with the applicable contract requirements.

3.2.2 Functional Performance Tests

3.2.2.1 Functional Performance Tests shall be performed for the items indicated in Appendix B. Functional Performance Tests shall begin only after all Pre-Functional Performance Test Checklists have been successfully completed. Tests shall prove all modes of the sequences of operation, and shall verify all other relevant contract requirements. Tests shall begin with equipment or components and shall progress through subsystems to complete systems. Upon failure of any Functional Performance Test item, the Contractor shall correct all deficiencies in accordance with the applicable contract requirements. The item shall then be retested until it has been completed with no errors.

3.3 COMMISSIONING REPORT

3.3.1 The Commissioning Report shall consist of completed Pre- Functional Performance Test Checklists and completed Functional Performance Tests organized by system and by subsystem and submitted as one package. The Commissioning Report shall also include all HVAC systems test reports, inspection reports (Preparatory, Initial and Follow-up inspections), start-up reports, TAB report, TAB verification report, Controls start-up test reports and Controls Performance Verification Test (PVT) report. The results of failed tests shall be included along with a description of the corrective action taken.

APPENDIX A

PRE-FUNCTIONAL PERFORMANCE TEST CHECKLISTS

Pre-Functional Performance Test Checklist - DX Air Cooled Condensing Unit

For Condensing Unit:

Checklist Item

A M E T C O

Installation a.

Check condenser fans for proper rotation.

X X

Electrical

E T C O a.

Power available to unit disconnect.

X X X b.

Power available to unit control panel.

X X c.

Verify that power disconnect is located within sight of the unit it controls

X X

Controls

E T C O a.

Unit safety/protection devices tested.

X X b.

Control system and interlocks installed.

X X

Control system and interlocks operational.

X X

Pre-Functional Performance Test Checklist - Exhaust Fan

For Exhaust Fan:

Installation

E T C O a.

Fan belt adjusted.

X X

E T C O a.

Power available to fan disconnect.

X b.

Proper motor rotation verified.

X within sight of the unit it controls.

X

E T C O a.

Control interlocks properly installed.

X b.

Control interlocks operable.

X c.

Dampers/actuators properly installed.

X d.

Dampers/actuators operable.

X e.

Verify proper location and installation of thermostat.

X

Testing, Adjusting, and Balancing (TAB) A M E T C O a.

TAB Report approved.

X X

Pre-Functional Performance Test Checklist - HVAC System Controls

For HVAC System:

E T C O a.

Layout of control panel matches drawings.

X X b.

Framed instructions mounted in or near control panel.

X X

Components properly labeled (on inside and outside of panel).

X X d.

Control components piped and/or wired to each labeled terminal strip.

X X e.

EMCS connection made to each labeled terminal strip as shown.

X X f.

Control wiring and tubing labeled at all terminations, splices, and junctions.

X X

Main Power a.

120 volt AC power available to panel.

X

Testing, Adjusting, and Balancing (TAB) A M E T C O a.

TAB Report submitted.

X X

Pre-Functional Performance Test Checklist - Single Zone Air Handling Unit

For Air Handling Unit:

E T C O a.

Inspection and access doors are operable and sealed.

X X b.

Condensate drainage is unobstructed.

X X X c.

Fan belt adjusted.

X X

E T C O a.

Power available to unit disconnect.

X X b.

Power available to unit control panel.

X c.

Proper motor rotation verified.

X d.

within sight of the unit it controls.

X e.

Power available to electric heating coil.

X

Coils

E T C O a.

Refrigerant piping properly connected.

X X

E T C O a.

Dampers/actuators properly installed.

X b.

Dampers/actuators operable.

X

Verify proper location and installation of thermostat.

X

Testing, Adjusting, and Balancing (TAB) A M E T C O a.

TAB Report approved.

X X

- End of Appendix A -

APPENDIX B

FUNCTIONAL PERFORMANCE TESTS CHECKLISTS

Functional Performance Test Checklist - Single Zone Air Handling Unit For Air Handling Unit:

1. Functional Performance Test: Contractor shall verify operation of air handling unit as per specification including the following:

a. Ensure that a slight negative pressure exists on inboard side of the outside air dampers throughout the operation of the dampers. Modulate OA, RA, and EA dampers from fully open to fully closed positions.

a. The following shall be verified when the supply and return fans operating mode is initiated:

(1) All dampers in normal position prior to fan start___________.

(2) System safeties allow start if safety conditions are met. ___

d. Unoccupied mode of operation.

(1) Observe fan starts when space temperature calls for heating/cooling ____.

(2) All dampers in normal position. _________________________

(3) Verify low limit space temperature is maintained as specified in sequence of operation. ______________________________________

e. The following shall be verified when the supply and return fans off mode is initiated:

(1) All dampers in normal position.______________________________

(2) Fan de-energizes. ___________________________________________

f. Verify cooling coil and heating coil operation by varying thermostat set point from cooling set point to heating set point and returning to cooling set point________.

g. Verify safety shut down initiated by low temperature protection thermostat________.

h. Verify occupancy schedule is programmed into time clock/UMCS________.

2. Certification: We the undersigned have witnessed the above functional performance tests and certify that the item tested has met the performance requirements in this section of the specifications.

Signature and Date

Contractor's Commissioning Specialist

Contractor's Mechanical Representative

Contractor's Electrical Representative

Contractor's TAB Representative

Contractor's Controls Representative

CE’s Representative

Contracting Officer's Representative

Using Agency's Representative

Functional Performance Test Checklist - Air Cooled Condensing Unit For Condensing Unit:

1. Functional Performance Test: Contractor shall demonstrate operation of refrigeration system as per specifications including the following: Start building air handler to provide load for condensing unit. Activate controls system start sequence as follows.

a. Start air handling unit. Verify control system energizes condensing unit start sequence. __________________________________________

b. Verify and record data in 2 and 3 below.

c. Shut off air handling equipment to verify condensing unit de-energizes. ___________________________________________________________

d. Restart air handling equipment one minute after condensing unit shut down. Verify condensing unit restart sequence. _____________________

2. Verify condensing unit amperage each phase and voltage phase to phase and phase to ground.

Motor Full-Load Amps __________

Amperage Phase 1 __________ Phase 2__________ Phase 3_______

Voltage Ph1-Ph2 __________ Ph1-Ph3__________ Ph2-Ph3_______

Voltage Ph1-gnd __________ Ph2-gnd__________ Ph3-gnd_______

3. Record the following information:

Ambient dry bulb temperature __________ degrees F

Suction pressure __________ psig

Discharge pressure __________psig

4. Unusual vibration, noise, etc.

Functional Performance Test Checklist - Air Cooled Condensing Unit (cont.)

5. Certification: We the undersigned have witnessed the above functional performance tests and certify that the item tested has met the performance requirements in this section of the specifications.

Contractor's Commissioning Specialist

Contractor's Mechanical Representative

Contractor's Electrical Representative

Contractor's TAB Representative

Contractor's Controls Representative

CE’s Representative

Contracting Officer's Representative

Using Agency's Representative

Functional Performance Test Checklist - HVAC Controls For HVAC System:

The Contracting Officer will select HVAC control systems to undergo functional performance testing. The number of systems shall not exceed 10 percent. Perform this test simultaneously with FPT for AHU or other controlled equipment.

1. Functional Performance Test: Contractor shall verify operation of HVAC controls by performing the Performance Verification Test {PVT} test for that system. Contractor to provide blank PVT test procedures previously done by the controls Contractor.

2. Verify interlock with UMCS system______.

3. Verify all required I/O points function from the UMCS system_____.

4. Certification: We the undersigned have witnessed the Performance Verification Test and certify that the item tested has met the performance requirements in this section of the specifications.

Contractor's Commissioning Specialist _________________________

Contractor's Mechanical Representative ___________________________

Contractor's Electrical Representative

Contractor's TAB Representative

Contractor's Controls Representative

CE’s Representative

Contractor's Officer's Representative

Using Agency's Representative

- End of Appendix B -

END OF SECTION 23 08 00.00 10

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23 08 00.00 10-14 02/21/12