HVAC commissioning, testing, adjusting and balancing standards

Grounded in the retrieved California Green Building Standards Code (CALGreen) — click a citation to read the verbatim passage:

• CALGreen § 5.410.2.6 High relevance — show source text

  5.410.2.6 Commissioning report. [N] A report of commissioning process activities undertaken through the design and construction phases of the building project shall be completed and provided to the owner or representative.

  5.410.3 Reserved.

  5.410.4 Testing and adjusting. New buildings less than 10,000 square feet. Testing and adjusting of systems shall be required for new buildings less than 10,000 square feet or new systems to serve an addition or alteration subject to Section 303.1.

  5.410.4.1 Reserved.

  Note: For energy-related systems under the scope (Section 100) of the California Energy Code, including heating, ventilation, air conditioning (HVAC) systems and controls, indoor lighting system and controls, as well as water heating systems and controls, refer to California Energy Code Section 120.8 for commissioning requirements and Sections 120.5, 120.6, 130.4 and 140.9(b)3 for additional testing requirements of specific systems.

  5.410.4.2 Systems. Develop a written plan of procedures for testing and adjusting systems. Systems to be included for testing and adjusting shall include, as applicable to the project:

  1. Renewable energy systems.

  2. Landscape irrigation systems.

  3. Water reuse systems.

  5.410.4.3 Procedures. Perform testing and adjusting procedures in accordance with manufacturer's specifications and applicable standards on each system.

  5.410.4.3.1 HVAC balancing. In addition to testing and adjusting, before a new space-conditioning system serving a building or space is operated for normal use, balance the system in accordance with the procedures defined by the Testing Adjusting and Balancing Bureau National Standards; the National Environmental Balancing Bureau Procedural Standards; Associated Air Balance Council National Standards or as approved by the enforcing agency.

  5.410.4.4 Reporting. After completion of testing, adjusting and balancing, provide a final report of testing signed by the individual responsible for performing these services.

  5.410.4.5 Operation and maintenance (O & M) manual. Provide the building owner or representative with detailed operating and maintenance instructions and copies of guaranties/warranties for each system. O & M instructions shall be consistent with OSHA requirements in CCR, Title 8, Section 5142, and other related regulations.

  5.410.4.5.1 Inspections and reports. Include a copy of all inspection verifications and reports required by the enforcing

  agency.

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  CALIFORNIA GREEN BUILDING STANDARDS CODE – MATRIX ADOPTION TABLE

  CHAPTER 5 – NONRESIDENTIAL MANDATORY MEASURES

  DIVISION 5.5 – ENVIRONMENTAL QUALITY

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

• CALGreen § 5.410.4.3 High relevance — show source text

  3. Water reuse systems.

  5.410.4.3 Procedures. Perform testing and adjusting procedures in accordance with manufacturer's specifications and applicable standards on each system.

  5.410.4.3.1 HVAC balancing. In addition to testing and adjusting, before a new space-conditioning system serving a building or space is operated for normal use, balance the system in accordance with the procedures defined by the Testing Adjusting and Balancing Bureau National Standards; the National Environmental Balancing Bureau Procedural Standards; Associated Air Balance Council National Standards or as approved by the enforcing agency.

  5.410.4.4 Reporting. After completion of testing, adjusting and balancing, provide a final report of testing signed by the individual responsible for performing these services.

  5.410.4.5 Operation and maintenance (O & M) manual. Provide the building owner or representative with detailed operating and maintenance instructions and copies of guaranties/warranties for each system. O & M instructions shall be consistent with OSHA requirements in CCR, Title 8, Section 5142, and other related regulations.

  5.410.4.5.1 Inspections and reports. Include a copy of all inspection verifications and reports required by the enforcing

  agency.

  5-28 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  CALIFORNIA GREEN BUILDING STANDARDS CODE – MATRIX ADOPTION TABLE

  CHAPTER 5 – NONRESIDENTIAL MANDATORY MEASURES

  DIVISION 5.5 – ENVIRONMENTAL QUALITY

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

  Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	OSHPD	Col11	Col12	Col13	Col14	Col15	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
  Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	1	1R	2	3	4	5	5	5	5	5	5	5	5	5
  Adopt entire CA chapter		X
  Adopt entire chapter as amended (amended sections listed below)
  Adopt only those sections that are listed below								X
  Chapter/Section
  5.501.1								X
  5.502.1 Definitions								X
  5.504.3								X
  5.504.4								X
  5.504.4.1								X
  Table 5.504.4.1								X
  Table 5.

• CALGreen § 8-10 High relevance — show source text

  8-10 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  Title 23, Waters, California Code of Regulations

  MWELO and supporting documents, including a water budget calculator, are available at: https://www.water.ca.gov/.

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 8-11

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  8-12 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  Commissioning Referenced Standards for Non-Energy Systems

  The following CALGreen Referenced Standards are included herein as a convenience for the users of the California Green Building Standards Code, but they are not considered to be part of the code unless they are officially adopted by a local jurisdiction.

  Contents Page Part 1: Standards for Compliance with Building Commissioning 8-14 Part 2: Commissioning Sample Forms and Templates 8-23

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 8-13

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  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  PART 1 STANDARDS FOR COMPLIANCE WITH BUILDING COMMISSIONING

  Reference: Section 5.410.2, Commissioning.

  Introduction:

  The purpose of this code is to improve public health, safety and general welfare by enhancing the design and construction of buildings through the use of concepts that reduce negative and increase positive environmental impacts. Commissioning is a vital element in this effort.

  Definitions used in the CALGreen Cx Reference standard:

  Acronyms

  BOD Basis of Design

  Cx Commissioning

  FPT Functional Performance Test

  HVAC Heating, Ventilating and Air-Conditioning

  O&M Operations and Maintenance

  OPR Owner’s Project Requirements

  Glossary:

  Acceptance Criteria— The conditions that must be met for systems or equipment to meet defined and expected outcomes.

  Commissioning (Cx)— Building commissioning as required in this code involves a quality assurance process that begins during design and continues to occupancy. Commissioning verifies that the new building operates as the owner intended and that building staff are prepared to operate and maintain its systems and equipment. Exceptions are allowed for dry storage warehouses of any size and conditioned spaces under 10,000 square feet accessory to them; and for tenant improvements under 10,000 square feet within a larger space.

  Owner— The individual or entity holding title to the property on which the building is constructed.

  Commissioning Coordinator— The person who coordinates the commissioning process. This can be either a third-party commissioning provider or an experienced member of the design team or owner in-house staff member.

  Commissioning Team— The key members of each party involved with the project designated to provide insight and carry out tasks necessary for a successful commissioning project. Team members may include the commissioning coordinator, owner or owner’s representative, building staff, design professionals, contractors or manufacturer’s representatives and testing specialists.

• CALGreen § 2.5.2 High relevance — show source text

  2.5.2||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|Mandatory|Commissioning report [N]|5.410.2.6||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|Mandatory|Testing and adjusting for new buildings < 10,000 sf or
  new systems that serve additions or alterations [A]|5.410.4||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|Mandatory|System Testing Plan for renewable energy, landscape
  irrigation and water reuse [A]|5.410.4.2||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|Mandatory|Procedures for testing and adjusting|5.410.4.3||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|Mandatory|Procedures for HVAC balancing|5.410.4.3.1||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency
  Select One Elective|Mandatory|Reporting for testing and adjusting|5.410.4.4||||| |(continued)
  **DIVISION 5.

• CALGreen § 5.410.2.4 High relevance — show source text

  c. Functions to be tested.

  d. Conditions under which the test shall be performed. e. Measurable criteria for acceptable performance. 4. Commissioning team information. 5. Commissioning process activities, schedules and responsibilities. Plans for the completion of commissioning shall be included.

  5.410.2.4 Functional performance testing. [N] Functional performance tests shall demonstrate the correct installation and operation of each component, system and system- to-system interface in accordance with the approved plans and specifications.

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 5-27

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  NONRESIDENTIAL MANDATORY MEASURES

  Functional performance testing reports shall contain information addressing each of the building components tested, the testing methods utilized, and include any readings and adjustments made.

  5.410.2.5 Documentation and training. [N] A systems manual and systems operations training are required, including Occupational Safety and Health Act (OSHA) requirements in California Code of Regulations (CCR), Title 8, Section 5142, and other related regulations.

  5.410.2.5.1 Systems manual. [N] Documentation of the operational aspects of the building shall be completed within the systems manual and delivered to the building owner or representative. The systems manual shall include the following:

  1. Site information, including facility description, history and current requirements.

  2. Site contact information.

  3. Basic operations and maintenance, including general site operating procedures, basic troubleshooting, recommended maintenance requirements, site events log.

  4. Major systems.

  5. Site equipment inventory and maintenance notes.

  6. A copy of verifications required by the enforcing agency or this code.

  7. Other resources and documentation, if applicable.

  5.410.2.5.2 Systems operations training. [N] A program for training of the appropriate maintenance staff for each equipment type and/or system shall be developed and documented in the commissioning report and shall include the following:

  1. System/equipment overview (what it is, what it does and with what other systems and/or equipment it interfaces).
  2. Review and demonstration of servicing/preventive maintenance.
  3. Review of the information in the systems manual.
  4. Review of the record drawings on the system/ equipment.

  5.410.2.6 Commissioning report. [N] A report of commissioning process activities undertaken through the design and construction phases of the building project shall be completed and provided to the owner or representative.

  5.410.3 Reserved.

  5.410.4 Testing and adjusting. New buildings less than 10,000 square feet. Testing and adjusting of systems shall be required for new buildings less than 10,000 square feet or new systems to serve an addition or alteration subject to Section 303.1.

  5.410.4.1 Reserved.

  Note: For energy-related systems under the scope (Section 100) of the California Energy Code, including heating, ventilation, air conditioning (HVAC) systems and controls, indoor lighting system and controls, as well as water heating systems and controls, refer to California Energy Code Section 120.8 for commissioning requirements and Sections 120.5, 120.6, 130.4 and 140.9(b)3 for additional testing requirements of specific systems.

  5.410.4.2 Systems. Develop a written plan of procedures for testing and adjusting systems. Systems to be included for testing and adjusting shall include, as applicable to the project:

  1. Renewable energy systems.

  2. Landscape irrigation systems.

  3. Water reuse systems.

• CALGreen § 801.0 High relevance — show source text

  Part I

  E 801.0 Heating, Ventilation, and Air Conditioning Systems Commissioning. E 801.1 Applicability. The provisions of this section apply to the commissioning of commercial and institutional HVAC systems.

  E 802.0 Commissioning. E 802.1 Commissioning Requirements. HVAC commissioning shall be included in the design and construction processes of the project to verify that the HVAC systems and components meet the owner’s project requirements and in accordance with this appendix. Commissioning shall be performed in accordance with this appendix by personnel trained and certified in commissioning by a nationally recognized organization. Commissioning requirements shall include the following:

  (1) Owner’s project requirements

  (2) Basis of design

  (3) Commissioning measures shown in the construction doc uments

  (4) Commissioning plan

  (5) Functional performance

  (6) Testing

  (7) Post construction documentation and training

  (8) Commissioning report

  2025 CALIFORNIA MECHANICAL CODE 479

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  APPENDIX E

  HVAC systems and components covered by this appendix as well as process equipment and controls, and renewable energy systems shall be included in the scope of the commissioning requirements. E 802.2 Owner’s Project Requirements (OPR). The performance goals and requirements of the HVAC system shall be documented before the design phase of the project begins. This documentation shall include not less than the following:

  (1) Environmental and sustainability goals

  (2) Energy efficiency goals

  (3) Indoor environmental quality requirements

  (4) Equipment and systems performance goals

  (5) Building occupant and O&M personnel expectations E 802.3 Basis of Design (BOD). A written explanation of how the design of the HVAC system meets the owner’s project requirements shall be completed at the design phase of the building project, and updated as necessary during the design and construction phases. The basis of design document shall cover not less than the following systems:

  (1) Heating, ventilation, air conditioning (HVAC) systems and controls

  (2) Water heating systems

  (3) Renewable energy systems E 802.4 Commissioning Plan. A commissioning plan shall be completed to document the approach to how the project will be commissioned, and shall be started during the design phase of the building project. The commissioning plan shall include not less than the following:

  (1) General project information

  (2) Commissioning goals

  (3) Systems to be commissioned. Plans to test systems and components shall include not less than the following:

  (a) A detailed explanation of the original design intent.

  (b) Equipment and systems to be tested, including the extent of tests.

  (c) Functions to be tested.

  (d) Conditions under which the test shall be performed.

  (e) Measurable criteria for acceptable performance.

  (4) Commissioning team information.

  (5) Commissioning process activities, schedules, and responsibilities. Plans for the completion of commissioning requirements listed in Section E 802.5 through Section E 802.7 shall be included.

  E 802.5 Functional Performance Testing. Functional performance tests shall demonstrate the correct installation and operation of each component, system, and system-to-system interface in accordance with the approved plans and specifications. Functional performance testing reports shall contain information addressing each of the building components tested, the testing methods utilized, and readings and adjustments made.

• CALGreen § 5.410.2 High relevance — show source text

  Reference: Section 5.410.2, Commissioning.

  Introduction:

  The purpose of this code is to improve public health, safety and general welfare by enhancing the design and construction of buildings through the use of concepts that reduce negative and increase positive environmental impacts. Commissioning is a vital element in this effort.

  Definitions used in the CALGreen Cx Reference standard:

  Acronyms

  BOD Basis of Design

  Cx Commissioning

  FPT Functional Performance Test

  HVAC Heating, Ventilating and Air-Conditioning

  O&M Operations and Maintenance

  OPR Owner’s Project Requirements

  Glossary:

  Acceptance Criteria— The conditions that must be met for systems or equipment to meet defined and expected outcomes.

  Commissioning (Cx)— Building commissioning as required in this code involves a quality assurance process that begins during design and continues to occupancy. Commissioning verifies that the new building operates as the owner intended and that building staff are prepared to operate and maintain its systems and equipment. Exceptions are allowed for dry storage warehouses of any size and conditioned spaces under 10,000 square feet accessory to them; and for tenant improvements under 10,000 square feet within a larger space.

  Owner— The individual or entity holding title to the property on which the building is constructed.

  Commissioning Coordinator— The person who coordinates the commissioning process. This can be either a third-party commissioning provider or an experienced member of the design team or owner in-house staff member.

  Commissioning Team— The key members of each party involved with the project designated to provide insight and carry out tasks necessary for a successful commissioning project. Team members may include the commissioning coordinator, owner or owner’s representative, building staff, design professionals, contractors or manufacturer’s representatives and testing specialists.

  Independent Third-Party Commissioning Professional— A commissioning consultant contracted directly by the owner who is not responsible to, or affiliated with, any other member of the design and construction team.

  Operation and Maintenance (O&M) Manuals— Documents that provide information necessary for operating and maintaining installed equipment and systems.

  Owner Representative— An individual or entity assigned by the owner to act and sign on the owner’s behalf.

  Process Equipment— Energy-using equipment and components that are not used for HVAC, electrical, plumbing and irrigation operations. Such devices would include but are not limited to heat transfer, water purifying, air cleaning, air vacuum and air compressing.

  Sequence of Operation— A written description of the intended performance and operation of each control element and feature of the equipment and systems.

  Selecting Trained Personnel (for Commissioning)

  This code requires that “Commissioning shall be performed in accordance with this section by trained personnel with experience on projects of comparable size and complexity.” The trained personnel manage and facilitate the commissioning process. The trained personnel develop and implement the commissioning tasks and documentation identified in Sections 5.410.2.1 through 5.410.2.6. Trained personnel may include appropriate members of owner staff, contractor and design team as well as independent commissioning professionals.

  It is essential that there is a single person designated to lead and manage the commissioning activities. In practice, this individual has been referenced by various identifiers such as commissioning authority, agent, provider, coordinator, lead, etc. In this guide the term “commissioning coordinator” is used.

• CALGreen § 204.4.1 High relevance — show source text

  The owner shall document the Owner’s Project Requirements (OPR). The design team shall develop the Basis of Design (BOD). The CxA shall review these documents for clarity and completeness. The owner and design team shall be responsible for updates to their respective documents, develop and incorporate commissioning requirements into the construction documents and develop and implement a commissioning plan. The CxA shall verify the installation and performance of the systems to be commissioned, verify that training and operation and maintenance documentation have been provided to the owner’s operations staff and complete a commissioning report.

  Commissioning process activities shall be completed for the following energy-related systems, at a minimum:

  1. Heating, ventilating, air conditioning and refrigeration (HVAC&R) systems (mechanical and passive) and associated controls.
  2. Lighting and daylighting controls.
  3. Domestic hot water systems.
  4. Renewable energy systems (wind, solar, etc.).
  5. Building envelope systems.

  A6.204.4.1 Owner’s Project Requirements (OPR). The expectations and requirements of the building shall be documented by the owner and the designer before the design phase of the project begins. This shall be reviewed by the CxA. At a minimum, this documentation shall include the following:

  1. Environmental and sustainability goals.
  2. Energy efficiency goals.
  3. Indoor environmental quality requirements.

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A6.1-3

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  APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

  4. Equipment and systems expectations.
  5. Building occupant and O&M personnel expectations.

  A6.204.4.2 Basis of Design (BOD). A written explanation of how the design of the building systems meets the Owner’s Project Requirements shall be completed at the design phase of the building project and updated as necessary during the design and construction phases. This shall be reviewed by the CxA. At a minimum, the Basis of Design document shall cover the following systems:

  1. Heating, ventilation, air conditioning (HVAC) systems and controls.
  2. Indoor lighting system and controls.
  3. Water heating system.
  4. Renewable energy systems.

  A6.204.4.3 Commissioning plan. A commissioning plan shall be completed to document the approach to how the project will be commissioned and shall be started during the design phase of the building project. This shall be reviewed by the CxA. The Commissioning Plan shall include the following at a minimum:

  1. General project information.
  2. Commissioning goals.
  3. Systems to be commissioned. Plans to test systems and components shall include at a minimum: a. A detailed explanation of the original design intent; b. Equipment and systems to be tested, including the extent of tests; c. Functions to be tested;

  d. Conditions under which the test shall be performed; and e. Measurable criteria for acceptable performance. 4. Commissioning team information. 5. Commissioning process activities, schedules and responsibilities – plans for the completion of commissioning requirements listed in Sections A6.204.4.4 through A6.204.4.6 shall be included.

• CALGreen § 6.1507 High relevance — show source text

  LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|

  A6.207.1.2 Controls for heat pumps with supplementary electric resistance heaters. Heat pumps with supplementary electric resistance heaters shall have controls:

  A6.207.1.2.1 That prevent supplementary heater operation when the heating load can be met by the heat pump alone; and

• CALGreen § 312.0 High relevance — show source text

  312.0 Plumbing Connections. 312.1 General. Water supply, sanitary drainage, and backflow protection shall be in accordance with the California Plumbing Code .

  313.0 Hangers, Supports, and Anchors. 313.1 General. Piping, tubing, appliances, and appurtenances shall be supported in accordance with this code, the manufacturer’s installation instructions, and in accordance with the Authority Having Jurisdiction. Seismic restraints shall be in accordance with the building code. 313.2 Material. Hangers, supports, and anchors shall be of sufficient strength to support the weight of the pipe or tubing and its contents. Piping or tubing shall be isolated from incompatible materials.

  313.3 Suspended Piping. Suspended piping or tubing shall be supported at intervals not to exceed those shown in Table 313.3.

  313.4 Alignment. Piping or tubing shall be supported in such a manner as to maintain its alignment and prevent sagging.

  313.5 Underground Installation. Piping or tubing in the ground shall be laid on a firm bed for its entire length; where other support is otherwise provided, it shall be approved in accordance with Section 302.0.

  313.6 Hanger Rod Sizes. Hanger rod sizes shall be not smaller than those shown in Table 313.6.

  TABLE 313.6

  HANGER ROD SIZES

  PIPE AND TUBE SIZE (inches)	ROD SIZES (inches)
  1⁄2 - 4	3⁄8
  5 - 8	1⁄2
  10 - 12	5⁄8

  For SI units: 1 inch = 25.4 mm

  313.7 Gas Piping. Gas piping shall be supported by metal straps or hooks at intervals not to exceed those shown in Table 1310.3.5.1.

  314.0 Balancing.

  314.1 General. Heating, ventilating, and air-conditioning systems (including hydronic systems) shall be balanced in accordance with one of the following methods:

  TABLE 313.6

  HANGER ROD SIZES

  (1) AABC National Standards for Total System Balance

  (2) ACCA Manual B

  (3) ASHRAE 111

  (4) NEBB Procedural Standards for Testing Adjusting Balancing of Environmental Systems

  (5) SMACNA HVAC Systems Testing, Adjusting, and Balancing

  315.0 Louvers in Hurricane Prone Regions.

  315.1 General. Louvers located in areas within hurricane prone regions that are within 1 mile (2 km) of the coastal mean high water line where the basic wind speed is 110 miles per hour (mi/h) (49.2 m/s) or more; or portions of hurricane-prone regions where the basic wind speed is 120 mi/h (53.6 m/s) or more; or Hawaii, shall be tested in accordance with Section 315.1.1 and Section 315.1.2.

  315.1.1 Testing. Louvers that protect air intake or exhaust openings shall be tested in accordance with AMCA 550 for resistance to wind-driven rain.

  315.1.2 Impact Resistance Test. Upon request by the Authority Having Jurisdiction, louvers protecting intake and exhaust ventilation ducts that are not fixed in the

• CALGreen § 5.410.2.5 High relevance — show source text

  4**
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Documentation and training [N]|5.410.2.5||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Systems manual [N]|5.410.2.5.1||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Systems operation training [N]|5.410.2.5.2||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Commissioning report [N]|5.410.2.6||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Testing and adjusting for new buildings < 10,000 sf or
  new systems that serve additions or alterations [A]|5.410.4||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|System testing plan for renewable energy, landscape
  irrigation and water reuse [A]|5.410.4.2||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Procedures for testing and adjusting|5.410.4.3||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Procedures for HVAC balancing|5.410.4.3.1||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Reporting for testing and adjusting|5.410.4.4||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Operation and maintenance (O&M) manual|5.410.4.5||||| |(continued)
  DIVISION 5.4
  Material
  Conservation
  and Resource
  Efficiency|Mandatory|Inspection and reports|5.410.4.5.1||||| |DIVISION 5.5
  Environmental
  Quality
  (continued)|Mandatory|Fireplaces|5.503.1||||| |DIVISION 5.5
  Environmental
  Quality
  (continued)|Mandatory|Woodstoves|5.503.1.1||||| |DIVISION 5.5
  Environmental
  Quality
  (continued)|Mandatory|Temporary ventilation|5.504.

• CALGreen § 4.3 High relevance — show source text

  For each phase of the work, define the roles and responsibilities for each member of the Cx team. iii. List the required Cx deliverables, reports, forms and verifications expected at each stage of the commissioning effort.

  iv. Include the confirmation process for the O&M manual, systems manual and the facility operator and maintenance staff training.

  4.3 Enforcement:

  At their discretion, the inspector confirms demonstrated compliance at Plan Intake by: a) Receipt of a copy of the commissioning plan, or b) Receipt of a form signed by the owner or owner’s representative attesting that the Cx Plan has been completed.

  Reference: 5 Functional performance testing

  CALGreen Section 5.410.2.4, Functional performance testing.

  5.1 Intent:

  Develop and implement the functional performance tests to document, as set forth in the commissioning plan, that all components, equipment, systems and system-to-system interfaces were installed as specified, and operate according to the Owner’s Project Requirements, Basis of Design, and plans and specifications.

  The following systems to be functionally tested are listed in the Basis of Design (Section 5.410.2.2 of the code):

  1. Renewable energy systems

  2. Landscape irrigation systems

  3. Water reuse systems

  5.2 Compliance Method:

  Compliance is demonstrated by developing and implementing test procedures for each piece of commissioned equipment and interfaces between equipment and systems according to the building-specific commissioning plan. Tests should include verification of proper operation of all equipment features, each part of the sequence of operation, overrides, lockouts, safeties, alarms, occupied and unoccupied modes, loss of normal power, exercising a shutdown, startup, low load through full load (as much as is possible) and back, staging and standby functions, scheduling, energy efficiency strategies and loop tuning.

  Elements of acceptable test procedures include:

  1. Date and party—Identification of the date of the test and the party conducting the test.

  2. Signature block—Signature of the designated commissioning lead and the equipment installing contractor attesting that the recorded test results are accurate.

  3. Prerequisites—Any conditions or related equipment checkout or testing that needs to be completed before conducting this test.

  4. Precautions—Identification of the risks involved to the test team members and the equipment and how to mitigate them.

  5. Instrumentation—Listing of the instrumentation and tools necessary to complete the test.

  6. Reference—In each procedure item, identify the source for what is being confirmed (e.g., sequence of operation ID, operating feature, specification requirement, etc.).

  8-18 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL

  7. Test instructions—Step-by-step instructions of how to complete the test, including functions to test and the conditions under which the tests should performed.

  8. Acceptance criteria—Measurable pass / fail criteria for each step of the test, as applicable.

  9. Results—Expected system response and space to document the actual response, readings, results and adjustments.

  10. Return to normal—Instructions that all systems and equipment are to be returned to their as-found state at the conclusion of the tests.

  11. Deficiencies—A list of deficiencies and how they were mitigated.

  5.3 Enforcement: