ASHRAE-90.1-2022- - Page 400
Extracted Content
Table M-1 Addenda to ANSI/ASHRAE/IES Standard 90.1-2019 (Continued)
| Addendum | Sections | Description of Changesa | ASHRAE Standard Committee Approval | Cosponsor Approval (IES) | ASHRAE BOD/Tech Council Approval | ANSI Approval |
|---|---|---|---|---|---|---|
| co | 4.2.1.1, 4.2.1.3, G3.1, G3.2, G3.3 | Adds new performance requirements for alterations, allowing larger retrofit projects a 5% increase in Building Performance Factor (BPF) relative to new construction vs. smaller retrofit projects which are subject to a new Section G3.3. | 6/25/2022 | 6/17/2022 | 6/29/2022 | 7/29/2022 |
| cq | G3.1.2.1, Table G3.1 (10), Table G3.1.3.7, Table G3.5.3 | Modifies Appendix G to align with Section 6 updates (e.g., removes outdated references, corrects instructions for determining equipment efficiency, converts “water” to “liquid” in the descriptions for chiller equipment.) | 6/25/2022 | 6/27/2022 | 6/29/2022 | 7/29/2022 |
| cr | 12.2, G1.2.1 | Adds language to limit the extent that envelope trade-offs can be used for compliance with Section 12 and Appendix G based on the amount that a proposed envelope performance factor is permitted to exceed the base value (i.e., envelope “backstop”). | 11/4/2020 | 10/7/2020 | 11/18/2020 | 12/16/2020 |
| cs | 12.5.2 | Clarifies efficiency requirements for HVAC and service water-heating equipment in the Section 12 budget building design. | 6/30/2022 | 6/10/2022 | N/A | 6/30/2022 |
| ct | Table G3.1 (5) | Provides additional details about the envelope modeling requirements for Appendix G baseline buildings. | 6/30/2022 | 6/10/2022 | N/A | 6/30/2022 |
| cu | 6.5.6.3 | Specifies that the heat source for performing heat recovery, as required for most acute inpatient hospitals, is the return water from a heat-pump chiller. | 6/30/2022 | 6/10/2022 | N/A | 6/30/2022 |
| cy | Section 12 | Updates the normative references to include the latest published addenda to 90.4-2019 | 9/30/2022 | 9/8/2022 | N/A | 9/30/2022 |
| da | G1.3.2, G2.2, G2.3, G2.4.2, G2.5, Table G3.1 | Aligns Appendix G requirements for documentation, simulation programs, climactic data, and exceptions with the corresponding portions of Section 12. | 12/30/2020 | 12/16/2020 | N/A | 12/30/2020 |
| a. These descriptions may not be complete and are provided for information only. | a. These descriptions may not be complete and are provided for information only. | a. These descriptions may not be complete and are provided for information only. | a. These descriptions may not be complete and are provided for information only. | a. These descriptions may not be complete and are provided for information only. | a. These descriptions may not be complete and are provided for information only. | a. These descriptions may not be complete and are provided for information only. |
NOTE
Approved addenda, errata, or interpretations for this standard can be downloaded free of charge from the ASHRAE website at www.ashrae.org/technology.