## SECTION 120.5 – REQUIRED NONRESIDENTIAL MECHANICAL SYSTEM ACCEPTANCE

Nonresidential, high-rise residential, and hotel/motel buildings shall comply with the applicable requirements of Sections 120.5(a) through 120.5(b).

EXCEPTION to Section 120.5: Systems serving healthcare facilities.

### (a) Before an occupancy permit is granted…

…the following equipment and systems shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified by the Reference Nonresidential Appendix NA7. A Certificate of Acceptance shall be submitted to the enforcement agency that certifies that the equipment and systems meet the acceptance requirements:

1. 'Outdoor air ventilation systems shall be tested in accordance with NA7.5.1.

2. Constant volume, single zone air conditioning and heat pump unit controls shall be tested in accordance with NA7.5.2.

3. Duct systems shall be tested in accordance with NA7.5.3 where either:

A. They are new duct systems that meet the criteria of Sections 140.4(l)1, 140.4(l)2, and 140.4(l)3; or

B. They are part of a system that meets the criteria of Section 141.0(b)2D.

4. Air economizers shall be tested in accordance with NA7.5.4.

EXCEPTION to Section 120.5(a)4: Air economizers installed by the HVAC system manufacturer and certified to the Commission as being factory calibrated and tested are exempt from the Functional Testing section of the Air Economizer Controls acceptance test as described in NA7.5.4.2.

5. Demand control ventilation systems required by Section 120.1(c)3 shall be tested in accordance with NA7.5.5.

6. Supply fan variable flow controls shall be tested in accordance with NA 7.5.6.

7. Hydronic system variable flow controls shall be tested in accordance with NA7.5.7 and NA7.5.9.

8. Boiler or chillers that require isolation controls as specified by Section 140.4(k)2 or 140.4(k)3 shall be tested in accordance with NA7.5.7.

9. Hydronic systems with supply water temperature reset controls shall be tested in accordance with NA7.5.8.

10. 'Automatic demand shed controls shall be tested in accordance with NA7.5.10.

11. Fault Detection and Diagnostics (FDD) for Packaged Direct-Expansion Units shall be tested in accordance with NA7.5.11.

12. Automatic Fault Detection and Diagnostics (FDD) for air handling units and zone terminal units shall be tested in accordance with NA7.5.12.

13. Distributed Energy Storage DX AC Systems shall be tested in accordance with NA7.5.13.

14. Thermal Energy Storage (TES) Systems shall be tested in accordance with NA7.5.14.

15. 'Supply air temperature reset controls shall be tested in accordance with NA7.5.15.

16. Water-cooled chillers served by cooling towers with condenser water reset controls shall be tested in accordance with NA7.5.16.

17. When an Energy Management Control System is installed, it shall functionally meet all of the applicable requirements of Part 6.

18. Occupant Sensing Zone Controls shall be tested in accordance with NA7.5.17.

### (b) When certification is required…

…by Title 24, Part 1, Section 10-103.2, the acceptance testing specified by Section 120.5(a) shall be performed by a Certified Mechanical Acceptance Test Technician (CMATT). If the CMATT is operating as an employee, the CMATT shall be employed by a Certified Mechanical Acceptance Test Employer. The CMATT shall disclose on the Certificate of Acceptance a valid CMATT certification identification number issued by an approved Acceptance Test Technician Certification Provider. The CMATT shall complete all Certificate of Acceptance documentation in accordance with the applicable requirements in Section 10-103(a)4.

NOTE: Authority: Sections 25402, 25402.1, and 25213, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, , 25402.8, 25943, Public Resources Code