Public Reviews, April 2020
Public Reviews Open for Standards 90.1-2019, 62.1-2019 and More
From eSociety, April 2020
The following are under a 30-day public review from March 20 to April 19:
ANSI/ASHRAE/IES Standard 90.1-2019, Energy Standard for Buildings Except Low-Rise Residential Buildings
1st Public Review of BSR/ASHRAE/IES Addendum d:
This addendum proposes revisions to parking garage ventilation requirements in Standard 90.1.
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1st Public Review of BSR/ASHRAE/IES Addendum e:
This addendum is intended to create requirements for the insulation of hot gas refrigerant piping used for space heating or service water heating, clarify that service water piping insulation requirements apply only to piping not supplied by the manufacturer of the service water heating equipment and update the title of Table 6.8.3-1 to reflect current definitions.
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1st Public Review of BSR/ASHRAE/IES Addendum f:
This addendum proposes footnote changes to Table 6.5.1-2. Historically, the required efficiency increases to eliminate economizer has been a point of confusion for the industry. The confusion stems from whether you need to increase both the full load efficiency and part load efficiency or just the part load efficiency of the equipment. Additionally, if the metric is not in the format of work out divided by energy in (ex. IPLV), then you could get different efficiency levels required based on how you do the math.
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1st Public Review of BSR/ASHRAE/IES Addendum g:
The current language in 6.5.1.1.5 is: “Systems shall provide a means to relieve excess outdoor air during air economizer operation to prevent overpressurizing the building. The relief air outlet shall be located so as to avoid recirculation into the building.” This is vague and unenforceable. Consequently, it is often ignored and violated. The proposed language is specific and enforceable and will achieve the desired intent of the current language.
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1st Public Review of BSR/ASHRAE/IES Addendum h:
Section 4.2.1.1 requires calculating the area-weighted average BPF for mixed use buildings that have several building area types. However, there are several different types of areas defined in the standard - gross floor area, gross conditioned floor area, gross lighted floor area, etc., and it is unclear which area applies in this case. The proposed addendum clarifies that the gross floor area should be used when calculating the area-weighted BPF.
The following is under a 30-day public review from March 27 to April 26:
1st Public Review of ASHRAE Addendum a to ASHRAE Guideline 0-2019, The Commissioning Process:
This proposed addendum revises the Title, Purpose, and Scope of the guideline to clarify that it applies to new buildings and new systems in existing buildings.
The following is under a 45-day public review from March 20 to May 4:
2nd Public Review ISC of BSR/ASHRAE/IES Addendum av to ANSI/ASHRAE/IES Standard 90.1-2019, Energy Standard for Buildings Except Low-Rise Residential Buildings:
This ISC to Addendum av introduces requirements to address thermal bridges in this standard. The contents of this proposal include prescriptive and performance (e.g., modeling thermal transmission values) options. The goal is to provide users with as many options as are currently available and allow users to choose which method of evaluation (e.g., simple or complex) that may be in the best interest of the building owner or building project without sacrificing the existing stringency.
The following are under a 30-day public review from March 20 to April 19:
ANSI/ASHRAE Standard 90.4-2019, Energy Standard for Data Centers
1st Public Review of BSR/ASHRAE Addendum a:
Addendum a to 90.4-2019 modifies the Annualized MLC section requirements to specify how heat recovery measures can be incorporated in the data center design and calculations. The addendum also includes clarifications to some of the pre-existing language in Section 6.5 and lifts previous requirements about meeting ASHRAE Thermal Guidelines for 8,460 hours per year, which is considered restrictive for most data centers.
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1st Public Review of BSR/ASHRAE Addendum b:
Addendum b to 90.4-2019 modifies the Alternative Compliance Method in Section 11, providing a new option to obtain credit for on-site renewable energy systems up to 5% of the IT load.
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1st Public Review of BSR/ASHRAE Addendum d:
Addendum d to 90.4-2019 provides several updates to the language in Section 8 to clarify that diesel rotary UPS systems can be used in the design. It also includes corrections to a few errors and inconsistencies identified in the 2019 publication.
The following are under a 30-day public review from March 20 to April 19:
ANSI/ASHRAE/ICC/USGBC/IES Standard 189.1-2017, Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings
1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bc:
Addendum bc to 189.1-2017 adds a new requirement for compliance with the Chapter 7 performance option calling for larger building projects to perform Energy Simulation Aided Design per ASHRAE Standard 209.
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1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bf:
Addendum bf to 189.1-2017 provides improvements to the numbering and language regarding the application of Section 8.3.1.10 (Preoccupancy Ventilation Control) to better convey the intent behind those requirements.
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1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bg:
Addendum bg to 189.1-2017 reflects changes to Chapters 7 and 8 that were identified based on the updated publication of ASHRAE Standard 62.1. Specific changes include a clarification on the use of Standard 170 vs 62.1, the addition of ISO filter standards as an alternative to MERV ratings, and further details concerning outdoor ozone air cleaning requirements.
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1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bl:
Addendum bl to 189.1-2017 clarifies the relationship between Standard 90.1 Appendix G and Standard 189.1 Appendix C and verifies that these modeling rules apply to Sections 7.5.1, 7.5.2, and 7.5.3. The addendum also adds language to Normative Appendix C that clarifies how onsite non-renewable energy generation and combined heat and power systems are modeled for performance calculations.
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1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bn:
Addendum bn to 189.1-2017 adds a requirement that air cleaning devices must not emit ozone, which closely resembles a recent change in Standard 62.1.
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1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bo:
Addendum bo to 189.1-2017 modifies soil-gas control requirements to reflect current industry practices that incorporate ANSI/AARST mandated soil-gas control measures in new building construction projects. Specifically, new requirements from ANSI/AARST Standard CC-1000-2018 have been introduced to Section 8. Additional requirements for mitigation and testing based on AARST standards have also been included in Section 10.
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1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bp:
Addendum bp to 189.1-2017 modifies Section 4.2 to remove language that was considered problematic in the context of an ASHRAE standard. The changes seen here do not alter the intent of Section 4.2, which addresses the jurisdictional options added to the standard to facilitate local adoption of the Standard or the IgCC.
The following is under a 45-day public review from March 20 to May 4:
ANSI/ASHRAE/ICC/USGBC/IES Standard 189.1-2017, Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings
1st Public Review of BSR/ASHRAE/ICC/USGBC/IES Addendum bk:
Addendum bk to 189.1-2017 updates the envelope criteria in Informative Appendix E based on changes to fenestration requirements that occurred in ANSI/ASHRAE/IES Standard 90.1-2019. Per Section 7.4.2.1, Appendix E is calculated by reducing Standard 90.1 requirements for U-factor by 5% for vertical fenestration and skylights. The same is true for calculating the solar heat gain coefficient (SHGC) for skylights and east- and west-oriented vertical fenestration, unless otherwise noted. There are no changes to the opaque envelope requirements.
The following are under a 30-day public review from April 3 to May 3:
ANSI/ASHRAE Standard 34-2019, Designation and Safety Classification of Refrigerants
1st Public Review of BSR/ASHRAE Addendum h:
This proposed addendum adds the zeotropic refrigerant blend R-471A to Tables 4-2 and D-2.
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1st Public Review of BSR/ASHRAE Addendum j:
This proposed addendum provides additional flexibility in designating refrigerants, to avoid potential confusion with other refrigerant designating bodies.
The following are under a 30-day public review from April 3 to May 3:
ANSI/ASHRAE Standard 62.1-2019, Ventilation for Acceptable Indoor Air Quality
1st Public Review of BSR/ASHRAE Addendum b:
The current definition of re-circulated air as well as Figure 3-1 (Ventilation System) are not clear on how to define air that is re-circulated inside a space without leaving it as air handled by units inside the space (e.g. chilled beams, fan coil units, ceiling fans). This proposed addendum clarifies this by removing the requirement that re-circulated air must leave the space and by updating Figure 3-1 to include air conditioning units that are inside the space.
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1st Public Review of BSR/ASHRAE Addendum c:
The definition for unusual source is unclear in distinguishing whether rarely refers to a source that is intermittent or transient within a space or if it is meant in the sense of commonality as in an object that would not be commonly found within in a space regardless of the duration of its presence. This proposed addendum seeks to bring clarity to what the committee considers as an unusual source. The new definition makes clear that the unusual nature of a source has to do with its relationship to common items and activities within the space.
The following is under a 45-day public review from March 27 to May 11:
3rd ISC Public Review of BSR/ASHRAE Standard 127-2012R, Method of Testing for Rating Air Conditioning Units Serving Data Center (DC) and Other Information Technology Equipment (ITE) Spaces
This revision of Standard 127-2012 establishes a uniform set of test requirements for rating air conditioning units that are applied in Data Center (DC) and other Information Technology Equipment (ITE) spaces.
The following are under a 45-day public review from April 3 to May 18:
ANSI/ASHRAE Standard 62.1-2019, Ventilation for Acceptable Indoor Air Quality
4th Public Review of BSR/ASHRAE Addendum aa:
For design, the indoor air quality procedure (IAQP) requires (simplified version): 1. Identification of contaminants of concern, 2. Determining indoor and outdoor sources, 3. Identifying a concentration limit and exposure period, 4. Specifying percentage of building occupants to be satisfied with perceived IAQ, 5. Performing a mass balance analysis for selected compounds. Weaknesses exist in items 1, 3, and 4. This proposed addendum adds a minimum requirement of percentage of people satisfied and requirements for designing to specific limits for design compounds and particulate matter, design compounds are specifically identified, mixtures are specifically identified, and objective and subjective testing are added.
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3rd Public Review of BSR/ASHRAE Addendum ab:
The 2016 version of the Standard Informative Appendix D (Rationale for Minimum Physiological Requirements for Respiration Air Based on CO2 Concentration) described CO2 generation rates based on physical activity. This appendix was deleted as it contained outdated information. This proposed addendum adds a normative appendix which describes how to apply the steady-state equation to estimate indoor CO2 concentrations from per person values of CO2 generation rates and outdoor air ventilation rates, and to use those to estimate zone population for DCV. It also describes the estimation of dynamic changes in indoor carbon dioxide concentrations for various changes in room conditions and multiple-zone systems, and their application to DCV.
The following are under a 30-day public review from April 3 to May 3:
ANSI/ASHRAE Standard 188-2018, Legionellosis: Risk Management for Building Water Systems
1st Public Review of BSR/ASHRAE Addendum b:
This proposed addendum addresses the definitions section of Standard 188-2018. The process of developing Guideline 12 by SSPC 188 for use with Standard 188 identified several definition changes or additions that were needed to keep the two documents consistent with one another.
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1st Public Review of BSR/ASHRAE Addendum c:
This proposed addendum deals primarily with changes to Standard 188-2018 that were identified during the process by SSPC 188 of developing Guideline 12 to be used with Standard 188. The changes include clarifying language, and maintaining consistency between the two documents.
The following is under a 45-day public review from April 10 to May 25:
1st Public Review of BSR/ASHRAE Standard 23P, Methods for Performance Testing Positive Displacement Refrigerant Compressors and Compressor Units
ASHRAE Standard 23P prescribes methods for performance testing positive displacement refrigerant compressors and compressor units, including capacity, isentropic efficiency, and volumetric efficiency.
The following are under a 45-day public review from April 10 to May 25:
ANSI/ASHRAE Standard 135-2016, BACnet – A Data Communication Protocol for Building Automation and Control Networks
1st Public Review of BSR/ASHRAE Addendum bv:
This addendum adds new property Write_Every_ Schedule_Action to the Schedule object, fixes XML namespace, and prevents Remote Traffic Duplication.
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1st Public Review of BSR/ASHRAE Addendum ca:
This addendum introduces the Concept of Color for BACnet; adds new Color object type, new Color Temperature object type, color-reference properties to LO and BLO object types, and high/low trim to LO object type; and makes aggregated changes to Clauses 21 and 25.
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1st Public Review of BSR/ASHRAE Addendum cc:
This addendum extends the Network Port Object Type for BACnet/SC.
The following is under a 45-day public review from April 10 to May 25:
ANSI/ASHRAE Standard 169-2013, Climatic Data for Building Design Standards
2nd ISC Public Review of BSR/ASHRAE Addendum a:
This addendum adds a legend to Figure A-2 and new Table A-4.
Constructive comments are invited for the following public review drafts, which can be accessed on ASHRAE’s website.
All activity for reviewing and commenting on public review drafts can be accomplished completely online. To obtain a paper copy of any Public Review Draft contact:
ASHRAE, Inc.
Attn: Standards Public Review
1791 Tullie Circle NE
Atlanta, GA 30329-2305
or email standards.section@ashrae.org.
Paper copies are available for $35/copy if 100 pages or fewer and $45 if more than 100 pages.