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STATE OF CALIFORNIA Mechanical Systems CALIFORNIA ENERGY COMMISSION CERTIFICATE OF COMPLIANCE NRCC-MCH-E Project Name: Orange County Credit Union TI Report Page: (Page 7 of 10) Date Prepared: 2025-10-14T13:44:46-04:00 Generated Date/Time:Documentation Software: Energy Code Ace CA Building Energy Efficiency Standards - 2022 Nonresidential Compliance Report Version: 2022.0.000 Schema Version: rev 20220101 Compliance ID: 336887-1025-0003 Report Generated: 2025-10-14 10:44:55 L. DISTRIBUTION (DUCTWORK and PIPING) This table is used to show compliance with mandatory pipe insulation requirements found in 120.3 and mandatory requirements found in 120.4(g) for duct sealing. 01 Insulation shall be protected from damage, including that due to sunlight, moisture, equipment maintenance, and wind. Insulation exposed to weather shall be installed with a cover suitable for outdoor service. Insulation covering chilled water piping and refrigerant suction piping located outside the conditioned space shall have a Class I or Class II vapor retarder. All penetrations and joints of which shall be sealed. Duct Leakage Testing The answers to the questions below apply to the following duct systems: Supply & Return duct connections from unit to existing NR/ Common Use:Duct leakage testing shall not exceed 15% per NA7.5.3 required for these systems?No Dwelling Units:Total duct leakage of duct system shall not exceed 15% or duct system to outside shall not exceed 10% per RA3.1.4 required for systems? --- Duct leakage testing per CMC Section 603.9.2 required for these systems?No 11 No The scope of the project includes only duct systems serving healthcare facilities 12 No Duct system provides conditioned air to an occupiable space for a constant volume, single zone, space-conditioning system. 13 No The space conditioning system serves less than 5,000 ft2 of conditioned floor area. 14 Yes The combined surface area of the ducts is more than 25% of the total surface area of the entire duct system: 15 No The scope of the project includes extending an existing duct system, which is constructed, insulated or sealed with asbestos. 16 No The scope of the project includes an existing duct system that is documented to have been previously sealed as confirmed through field verification and diagnostic testing in accordance with procedures in the Reference Nonresidential Appendix NA2. 17 Yes All Ductwork and plenums with pressure class ratings shall be constructed to Seal Class A 18 Yes All ductwork is an extension of an existing duct system 19 No Ductwork serving individual dwelling unit 20 Yes < 25 ft of new or replacement space conditioning ducts installed in multifamily occupancy 21 R-8 Duct Insulation R-value 22 Yes Ductwork Existing To Remain 23 Yes Duct System Connected To Altered Space Conditioning System