ASHRAE-90.1-2022- - Page 397
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 |
|---|---|---|---|---|---|---|
| z | 9.1.4 | Lowers the wattage assigned for track lighting to reflect the predominate use of higher-efficiency LED technology. | 2/28/2022 | 2/25/2022 | N/A | 2/28/2022 |
| aa | G3.1.2.9, Table G3.1 | Corrects the SI fan power values in Appendix G to make them consistent with the rest of the standard. | 5/28/2021 | 5/4/2021 | N/A | 5/28/2021 |
| ab | 3.2, 3.3, G3 | Clarifies the process for selecting baseline HVAC systems when using the Appendix G Performance Rating Method (PRM); includes new acronyms to describe HVAC systems and a new definition for “residential associated HVAC zone.” | 6/30/2021 | 6/9/2021 | N/A | 6/30/2021 |
| ac | 3.2, 9.4.1.2, Table 9.2.3.1, Table 9.6.1, Appendix E | Updates interior lighting power and minimum control requirements: adds a power exception for the germicidal function in luminaires and sources, removes exceptions for casinos and parking garage daylight transition zone lighting, and provides a definition for the latter item. | 6/25/2022 | 6/17/2022 | 6/29/2022 | 7/29/2022 |
| ad | 9 | Reorganizes Section 9, “Lighting,” to better parallel the structure of the other main sections. | 8/31/2021 | 8/26/2021 | N/A | 8/31/2021 |
| ae | 8.4.4 | Updates exceptions and footnotes associated with Section 8.4.4 requirements for the minimum efficiency of low-voltage dry-type transformers in commercial buildings. | 8/31/2021 | 8/26/2021 | N/A | 8/31/2021 |
| ag | 3.2, 3.3, 6.2.26.6, Appendix K | Introduces an optional Mechanical System Performance Path that allows HVAC system efficiency trade-offs based on a new metric—total system performance ratio (TSPR)—to ensure that equivalent energy savings are maintained compared to the prescriptive approach. | 7/20/2022 | 9/8/2022 | 8/15/2022 | 9/9/2022 |
| ah | 7.5.3 | Increases the thermal efficiency required for high-capacity gas-fired service water-heating equipment and provides the U.S. DOE criteria for defining high-capacity water heaters. | 8/31/2021 | 8/26/2021 | N/A | 8/31/2021 |
| aj | Table G-1 | Updates Appendix G to align with Addendum ae clarifications related to baseline transformer performance. | 9/30/2021 | 9/27/2021 | N/A | 9/30/2021 |
| ak | G3.1.1 | Provides criteria for determining when an HVAC zone should be isolated from a multizone system in the baseline building model. | 9/30/2021 | 9/27/2021 | N/A | 9/30/2021 |
| am | 9.2.3.2, Table 9.2.3.2, 9.4.1.4, 9.4.2, Table 9.4.2-1, Table 9.4.2-2 | Modifies exterior lighting power and control requirements based on improvements in technology and revised lighting practices; restructures portions of Section 9 to better communicate exceptions to those requirements. incorrect reference to cavity spaces vs subject of narrative to right regarding lighting? | 6/25/2022 | 6/17/2022 | 6/29/2022 | 7/29/2022 |
| an | Table G3.1 | Clarifies baseline HVAC fan schedule requirements for projects that rely on ventilation via operable windows that are manually opened by the occupants. | 9/30/2021 | 9/27/2021 | N/A | 9/30/2021 |
| ao | 5.4.3.3.3, 6.4.3.9, 10.4.5, Table H-3 | Revises the requirements for air curtain units and controls and indicates that installation is to be performed in accordance with the manufacturer’s instructions. | 9/30/2021 | 9/27/2021 | N/A | 9/30/2021 |
| ap | 3.2, 3.3, 4.2.1, 4.2.2, 9.9.1, 12.2, 13, Section 11 | Introduces a new section to Standard 90.1 for the use of energy credits to enable an approximately 4% to 5% energy cost savings. There are a total of 33 individual measures from which users can earn the required number of credits for their building type and climate zone. | 7/20/2022 | 9/8/2022 | 8/15/2022 | 9/9/2022 |
| aq | 6.8.3, Table 6.8.3-1, Table 6.8.3-2, 7.4.3, Table 7-4 | Introduces requirements for service water heating pipe insulation based on typical operating conditions. | 7/29/2022 | 7/26/2022 | N/A | 7/29/2022 |
| ar | 3.2, Table 9.2.3.1, 9.4.4, Appendix E | Adds requirements for indoor horticultural lighting based on a new metric, photosynthetic photon efficacy (PPE), developed in ANSI/ASABE S640. | 7/20/2022 | 9/8/2022 | 8/15/2022 | 9/9/2022 |
| as | 4.2.4, 5.9, 6.9, 7.9, 8.9, 9.9, 10.9 | Rearranges envelope inspection requirements and improves commissioning language throughout. | 1/27/2022 | 1/18/2022 | N/A | 1/27/2022 |
| 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. |