PUBLIC COMMENT: Draft PDS-02, RESNET/ICC 301-2022 Addendum C-202x, Interim Updates Proposed addendum RESNET/ICC 301-2022 Addendum C-202x amends the 2022 edition of Standard 301 to provide clarifications and interim updates. The proposed revisions address the following major subjects and others: clarifications to improve the consistency of rating software calculations; definitions and acronyms for terms used in the Standard; new federal HVAC appliance SEER2 and HSPF2 ratings and ceiling fan ratings; the treatment of shared water heater losses for multi-family dwelling units; balanced mechanical ventilation; duct leakage where all ducts are within conditioned space; carbon dioxide index calculations; onsite battery storage; multiple end-use loads; interior shading; reporting of the edition of standard ANSI/RESNET/ICC 301 that rating calculations are compliant with, and; interpretations issued for ANSI/RESNET/ICC 301-2022. The first draft, PDS-01 RESNET/ICC 301-2022 Addendum C-202x, was released for public review and comment and changes have been made in response to certain comments. This second draft, PDS-02, includes the changes to draft PDS-01 and are shown with strike through and underlined text in red print. Only the changes shown in draft PDS-01 by strike-through and underlined text in red print are open for comment. Draft PDS-02 of RESNET/ICC 301-2022 Addendum C-202x is submitted for public comment for 45 days, beginning May 3, 2024, and ending June 17, 2024. Draft PDS-01, RESNET/ICC 301-2022 Addendum F-202x, Integrated Heat Pump Water Heaters Proposed addendum RESNET/ICC 301-2022 Addendum F-202x amends the 2022 edition of Standard 301 to define terms, provide clarifications, and enhance the assessment of integrated Heat Pump Water Heaters. Draft PDS-01 is the first public review draft released for comment. The changes to ANSI/RESNET/ICC 301-2022 proposed by Addendum F-202x are shown in strike-through and underlined text in red print. Only the changes shown in strike-through and underlined and text in red print are open for comment. Draft PDS-01 of RESNET/ICC 301-2022 Addendum F-202x is submitted for public comment for 45 days, beginning May 3, 2024, and ending June 17, 2024.
