Section 13 AAC 50.023 - International Mechanical CodeThe International Mechanical Code 2021 Edition (IMC), Chapters 1 - 15 and Appendix A, are adopted by reference to regulate all occupancies and buildings, except that the IMC is revised by deleting all the references to "ICC Electrical Code" or "NFPA 70" and replacing those references with "Electrical Code as adopted by 8 AAC 70.025, as amended as of March 6, 2016 and as amended from time to time" and the IMC is revised by deleting all the references to "International Fuel Gas Code", with the exception of Chapter 3 Section 304 and Chapters 6 and 7, deleting all the references to "International Plumbing Code" and replacing the references to "International Fuel Gas Code" and "International Plumbing Code" with "Plumbing Code as adopted by 8 AAC 63.010, as amended from time to time"
Additionally, the IMC is changed with the following revisions:
(1) Chapter 1 of the IMC is revised by deleting Sections 103, 104, and 106 - 110 and is revised by deleting references to the "lnternational Energy Conservation Code (lECC)" and "International Residential Code (IRC)";(2) Chapter 3, Section 301.6 (Fuel gas appliances and equipment) of the IMC, is revised by deleting the words "fuel gas distribution piping and equipment" and "fuel gas fired appliance venting systems";(3) Chapter 6, Section 605.1 (General) of the IMC, is revised by adding an exception to read: "Exception: Filters may be installed downstream of any heat exchanger or coil when environmental conditions are such that filters installed upstream of a heat exchanger or coil degrade system performance.";(4) Chapter 8, Section 804.1 (Direct-vent terminations) of the IMC, is revised by adding a second sentence to read: "Combustion vents for direct-vent chambers are at least three feet high or provide snowdrift prevention.";(5) Chapter 9, Section 907.1 (General) of the IMC, is revised by adding a second sentence to read: "Commercial standard UL 2790 may be accepted as an alternative to UL 791 and residential standard UL 508 and UL 698 may not be acceptable as an alternative to UL 791.";(6) Chapter 10, Section 1001.1 (Scope) of the IMC, is revised, with the exceptions remaining, to read: "Scope. This chapter governs the installation, alteration, and repair of boilers, water heaters, and pressure vessels not subject to the provisions of the Department of Labor and Workforce Development under AS 18.60.180-18.60.395.";(7) Chapter 10 of theIMC is revised by deleting Section 1011;(8) Chapter 14 (Solar thermal systems) of the IMC, is revised by deleting the body of the chapter and inserting a new Section 1401 to read: "Section 1401 General. Solar energy equipment and appliances must be installed in compliance with the Solar Energy Code as adopted by 8 AAC 63.010, as amended as of March 6, 2016 and as amended from time to time.";(9) Chapter 15 (Referenced Standards) of the IMC is revised by adding, to the list of referenced UL standards, UL 2790 - 2019 Revision Standard for Commercial Incinerators, adopted by reference.Eff. 8/31/96, Register 139; am 3/27/99, Register 149; am 9/15/2001, Register 159; am 8/27/2004, Register 171; am 9/12/2007, Register 183; am 11/16/2012, Register 204; am 5/19/2017, Register 222, July 2017; am 10/28/2022, Register 244, January 2023Copies of the International Mechanical Code 2021 Edition (IMC) may be obtained from the International Code Council Inc., 25442 Network Place, Chicago, Illinois 60673-1254; telephone: (800) 786-4452; Internet address: www.iccsafe.org.