COMMENT PERIOD EXTENDED TO DECEMBER 12, 2023. Proposed Addendum RESNET/ICC 301-2022 Addendum E-202x amends the 2022 edition of Standard 301 to modify the criteria for modeling the performance of Central Fan Integrated Supply Systems (CFIS Systems). The amendments were developed through RESNET’s ongoing rating software consistency initiative and are intended to improve CFIS systems modeling for energy ratings. Improvement of CFIS systems modeling also requires adjustments to data collection and testing. Standard ANSI/RESNET/ICC 380-2022 is being amended to revise its respective requirements. RESNET/ICC 301-2022 Addendum E-202x amends RESNET/ICC 301-2022 concurrent with the RESNET/ICC 380-2022 Addendum B-202x amendments to Standard 380-2022 to maintain consistency and implement the improvement of CFIS systems modeling. The two addenda should be reviewed together. Draft PDS-01 of RESNET/ICC 301-2022 Addendum E-202x is submitted for public comment for 45 days, beginning October 13, 2023, and ending December 12, 2023. Only the changes shown in draft PDS-01 by strike-through and underline and red print are open for comment. To review the draft addendum click on Draft PDS-01, RESNET/ICC 301-2022 Addendum E-202x To submit your comments, click on “SUBMIT COMMENTS HERE” below. Comments are posted in real time and you will be able to review comments by clicking on “VIEW COMMENTS HERE” below. SUBMIT COMMENTS HERE: Submit your comment below for Draft PDS-01, RESNET/ICC 301-2022 Addendum E-202x, CFIS Systems Submit your comment below for Draft PDS-01, RESNET/ICC 301-2022 Addendum E-202x, CFIS Systems COMMENTER First Name: * Last Name: * Affiliation * (who you represent) LOCATION Country : * United States of AmericaCanada Address: * City: * State/Province: * AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming Zip Code: * CONTACT INFORMATION Phone Number: * Email Address: * COMMENT Page Number: * Section/Table/Figure Number: Comment Intent: * Select a Comment IntentObjectionNot an Objection Comment Type: * Select a Comment TypeGeneralTechnicalEditorial Comment: * Visual Text Include your justification for proposed change to draft standard Proposed Change to Amendment: Visual Text Use "strike" and "underline" formatting and include the entire section/subsection to which changes are proposed reCAPTCHA If you are human, leave this field blank. Submit Start Over VIEW COMMENTS HERE: Entry Date: October 20, 2023 at 2:36 PMFull Name: Derin CandasAffiliation: US-EcoLogicAddress: 911 Maryland Drive Irving, Texas 75061Phone Number: 3616589213Email: derin.candas@us-ecologic.comPage Number: 1Section/Table/Figure Number: Comment Intent: Not an ObjectionComment Type: GeneralComment:Very happy with this clarification on CFIS. Proposed Change to Amendment:Entry Date: November 18, 2023 at 8:25 AMFull Name: Cindy ZeisAffiliation: Northeast HERS Alliance (NEHERS)Address: 950 Danby Road Ithaca, New York 14850Phone Number: 2677610148Email: czeis@psdconsulting.comPage Number: AllSection/Table/Figure Number: AllComment Intent: Not an ObjectionComment Type: GeneralComment:Given the complexity of this issue along with the timing with the RESNET conference, and holidays we are asking for an extension of the deadline. We believe 30 days would be appropriate to allow for stakeholders to discuss and respond to this addendum. This proposal is being issued on behalf of our Standards Committee who is currently reviewing this addendum. NEHERS represents more than 260 Raters and 11 Providers from New Jersey to Maine (and a few beyond). Proposed Change to Amendment:Asking for time for working groups to fully discuss and prepare any additional comments. We thank you for your consideration. Entry Date: November 22, 2023 at 8:21 AMFull Name: Mike MooreAffiliation: Stator LLC, on behalf of Broan-NuToneAddress: 5313 Fox Hollow Ct. Loveland, Colorado 80537Phone Number: 3034087015Email: mmoore@statorllc.comPage Number: multipleSection/Table/Figure Number: definitionsComment Intent: ObjectionComment Type: TechnicalComment: This suggested modification for the definition of CFIS System would clarify that a ventilation system that is integrated with the heating or cooling system’s ductwork but that does not rely on the heating or cooling system’s blower to introduce outdoor air would not be considered a CFIS System. Proposed Change to Amendment:Central Fan Integrated Supply System (CFIS System) – A Blower Fan of a Forced-Air HVAC System with a return-side outdoor air intake duct that supplies outdoor air to the Dwelling Unit[1]. Such systems exclude additional Ventilation fans unless the operation of those fans is coordinated with the Blower Fan through a common control. Entry Date: November 22, 2023 at 8:37 AMFull Name: Mike MooreAffiliation: Stator LLC, on behalf of Broan-NuToneAddress: 531 Deckawoo Dr. Loveland, Colorado 80537Phone Number: 3034087000Email: mmoore@statorllc.comPage Number: multipleSection/Table/Figure Number: 4.2.2.7.2.13Comment Intent: ObjectionComment Type: TechnicalComment: Use “operational control mode” instead of “operational mode” for all such references in 301 and 380. This helps differentiate between coincidental operation and intentional operation. See also the proposed change to the footnote. Use “specific fan power” when referring to a metric with the units of W/cfm. “Efficiency” metrics should be unitless (i.e., same units in the numerator as in the denominator). Proposed Change to Amendment:4.2.2.7.2.13.1.4 Ventilation airflows. For each operational control mode used by the CFIS System, software shall collect the corresponding Ventilation airflows of each fan. 4.2.2.7.2.13.1.5 Supplemental fan specific fan power efficiency. Where the CFIS System employs a supplemental Ventilation system, software shall collect the fan W/cfm of that supplemental fan. 4.2.2.7.2.13.2. Software shall simulate all CFIS Systems as follows: 4.2.2.7.2.13.2.1 Where a Rated Home has a CFIS System, duct losses for all non-heating and non-cooling Blower Fan run-time shall be included in the simulation. 4.2.2.7.2.13.2.2 Where the CFIS System automatically controls the flow of outdoor air, software shall simulate outdoor airflow through the inlet duct for all Ventilation runtime hours of the Blower Fan; where such control is absent, software shall simulate outdoor airflow through the inlet duct for all heating, cooling, and Ventilation runtime hours of the Blower Fan. 4.2.2.7.2.13.2.3 Ventilation fan energy. The Blower Fan specific fan power efficiency used in the CFIS simulation shall employ the same W/cfm value used for simulation of heating and cooling by that Forced-Air HVAC System. The Blower Fan wattage shall be calculated by multiplying the fan specific fan power efficiency by the larger of the heating and cooling flowrates. Where the CFIS System uses the Blower Fan outside of heating and cooling runtimes, software shall simulate that added Blower Fan energy. Where the CFIS System control strategy runs the Blower Fan at fixed intervals regardless of heating and cooling runtimes, software shall simulate the added Blower Fan energy each hour using the following runtime equation: … [1] (Informative Note) For example, one operational control mode may be only the Blower Fan operating while another mode may be only the supplemental ventilation fan operating. A third mode may run both simultaneously. Entry Date: November 28, 2023 at 9:41 AMFull Name: Connor DillonAffiliation: Building Science Institute, Ltd. Co.Address: 531 W. Court 406G Geronimo, Alabama 78115Phone Number: 4238385171Email: connor@buildingscienceinstitute.orgPage Number: 1Section/Table/Figure Number: Comment Intent: Not an ObjectionComment Type: GeneralComment:It is unfortunate that it has taken this long to clarify that CFIS are not sufficient whole house mechanical ventilation solutions. I support the modified language, but I’m worried for the many homes which were registered and certified for energy code and above-code programs like ENERGY STAR. I propose RESNET Staff use their Registry data to review the impact, and whether people were actually modeling CFIS appropriately in compliance with ANSI 301. Proposed Change to Amendment: Tips and Reminders for Submitting Public Comments Comments must pertain to text in draft PDS-01 that is shown as either strikethrough or underlined and red print. Comments on portions of draft PDS-01 where no change is indicated will be rejected. Comments should include a specific proposed change to the text of the draft open for comment. Proposed added text must be underlined and text proposed to be removed must be shown using strike-through. If not submitted in this format, the public comment may be rejected. Do not submit comments on standards other than this one that is out for public comment. If you submit public comment representing the collective interests of a group of stakeholders, you are encouraged to submit ONE public comment and identify all stakeholders in that comment. While not required, this expedites the ability of the committees to respond to commenters in a timely manner. Public comments are reviewed by committees with volunteer members, that are Raters, Providers, Software Developers and other industry and public interest stakeholders. They are not reviewed by RESNET® Staff. Most amendments to RESNET® standards are proposed by industry and public stakeholders not RESNET®. To learn more about submitting proposed amendments visit this page: https://www.resnet.us/about/standards/submit-proposed-amendments/
