This draft is scheduled for a 45-day public review from July 6 to Aug. 29:

3rd ISC Public Review of BSR/ASHRAE Addendum h to ANSI/ASHRAE Standard 15-2016, Safety Standard for Refrigeration Systems

This addendum modifies portions of Standard 15 to incorporate class 2L flammability classification as defined in ASHRAE Standard 34-2016.This addendum proposes to allow Group A2L refrigerants in applications requiring machinery rooms. This proposal does not change how ASHRAE Standard 15 deals with Group A2L refrigerants in high-probability systems for human comfort, industrial applications, or refrigerated rooms. Those topics are expected to be handled in separate addenda proposals.

The following is under a 45-day public review from July 20 to Sept. 3:

1st Public Review of BSR/ASHRAE Standard 29- 2015 (RA 201X), Methods of Testing Automatic Ice Makers

This standard prescribes a method of testing automatic ice makers by:
a) specifying procedures to be used when testing automatic ice makers.
b) establishing the types of equipment to which the provisions of the standard apply.
c) defining terms describing the equipment covered and terms related to testing.
d) specifying the type of instrumentation and test apparatus required in testing.
e) specifying a uniform method for calculation of results.
f) specifying data and results to be recorded.

These drafts are scheduled for a 30-day public review from July 13 to Aug. 12:

1. 1st Public Review of BSR/ASHRAE Addendum x to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality

The exhaust procedure in Standard 62.1-2016 contains requirements in notes. This proposed addendum relocates those requirements to the body of the standard. The performance compliance path is modified to be consistent with the proposed changes to the Indoor Air Quality Procedure (IAQP) in Addendum aa to 62.1-2016. Table 6.5.2 (Airstreams or Sources) is added as relocated from Section

2. 1st Public Review of BSR/ASHRAE Addendum ad to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality

Table 6.5 (Minimum Exhaust Rates) lists minimum exhaust rates for certain spaces in which contaminants generation have been deemed high enough that it contaminant cannot be diluted and thus need to be exhausted. However, the standard does not require these spaces to be at any pressure.

This proposed addendum adds the requirement for these spaces to be at a negative pressure with respect to adjacent spaces in order to minimize contaminants leakage to adjacent spaces.

These drafts are scheduled for a 45-day public review from July 13 to Aug. 27:

1. First public review draft of BSR/ASHRAE Addendum aa to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality

The indoor air quality procedure (IAQP) has a long history going back to the 1981 standard. It has flexibility. Weaknesses in current requirements for identifying the contaminants of concern, identifying concentration limits and exposure periods, and specifying the percentage of building occupants to be satisfied with perceived IAQ. Although the percentage of building occupants to be satisfied with perceived IAQ may be specified, and the standard requires that it be measured; this measurement usually would take place after occupancy so is often ignored or omitted. No measurement of any resulting concentration is currently required so the effectiveness of any design is not measured or verified.

This proposed addendum adds requirements for designing to specific targets. The target design compounds and mixtures are specifically identified.  

2.    First public review draft of BSR/ASHRAE Addendum ab to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality

Indoor CO2 has had a prominent place in discussions of ventilation and IAQ for many years. The relevant issues include the impacts of CO2 on building occupants, the use of CO2 to control outdoor air ventilation rates, CO2  monitoring as an indicator of general IAQ conditions and the use of indoor CO2 to estimate building ventilation rates.

This proposed addendum adds a new Normative Appendix D, Estimation of Steady-State Indoor CO2 Concentrations Based on Per Person Ventilation Rates and Occupant Characteristics. The purpose is to describe the estimation of steady-state indoor carbon dioxide concentrations for a given per person outdoor air ventilation rate.

3.    First public review draft of BSR/ASHRAE Addendum ac to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality

Informative Appendix C (Summary of Selected Air Quality Guidelines) in 62.1-2016 was deleted in a previous addendum.

This proposed addendum adds a new Informative Appendix C with content supportive of changes to the Indoor Air Quality Procedure (IAQP).

These drafts are scheduled for a 30-day public review from Aug. 3 to Sept. 2:

1. 1st Public Review of BSR/ASHRAE/IES Addendum at to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum contains new language to create proper energy accounting at buildings that provide fuel or electricity to vehicles. In some areas, certain or all commercial buildings are being required to install electric vehicle supply equipment (EV charging stations). In other cases, more types of retail operations other than traditional “gas stations” are selling fuel to customers.

2. 1st Public Review of BSR/ASHRAE/IES Addendum au to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum makes changes to coordinate with addendum f to Standard 62.1. Addendum f to Standard 62.1 created a simplified way of determining outdoor air rates for multiple zone recirculating air handling systems that includes a simple prescriptive requirement for calculating minimum air handler outdoor air rates and minimum setpoints for VAV zones.

3. 1st Public Review of BSR/ASHRAE/IES Addendum ax to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum gives the standard user alternatives to compliance with the automatic receptacle control requirement (Section 8.4.2).

4. 1st Public Review of BSR/ASHRAE/IES Addendum ay to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum introduces new material in Section 6.5.6.1 which contains energy recovery ventilation requirements that were developed without consideration given for dwelling units within the scope of 90.1. In an effort to develop rational energy recovery ventilation requirements for dwelling units, building energy simulations were conducted on a nominal 1,000 ft2, two-bedroom apartment dwelling unit in compliance with the prescriptive path of 90.1 across all climate zones.

Four ventilation systems were evaluated for outdoor air: exhaust-only (not permitted by the International Mechanical Code, which requires supply or balanced ventilation, but evaluated at the request of the 90.1 Mechanical Subcommittee), dedicated supply, central fan integrated supply, and balanced with energy recovery. Ventilation rates were set in accordance with ASHRAE 62.2.

5. 1st Public Review of BSR/ASHRAE/IES Addendum az to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

The current language implies that a different modeling methodology should be used to model refrigeration equipment in the baseline and proposed design. Since Tables G3.10.1 & 2 list kWh/day based on AHRI 1200 testing procedure, the proposed design usage must also be based on the rated kWh/day of the specified equipment using the same testing procedure.

6. 1st Public Review of BSR/ASHRAE/IES Addendum ba to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This proposed addendum establishes a methodology for determining the baseline flow rates on projects where service water-heating is demonstrated to be reduced by water conservation measures that reduce the physical volume of service water required, such as with low-flow shower heads.

7. 1st Advisory Public Review of BSR/ASHRAE/IES Addendum bd to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

In order to support proposals on heat reclaim chillers and requests from regulatory groups, the ASHRAE 90.1 committee has developed a proposed table of minimum efficiencies for air and water cooled heat pump chiller that align with data available for these chiller packages currently sold in the industry.

This proposal is being released as an advisory public review, so that we can get industry feedback on the proposal to help move this along and develop a final proposal.

8. 1st Public Review of BSR/ASHRAE/IES Addendum bf to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This proposed addendum provides an alternative to the requirement for vestibules by use of an air curtain that meets specific requirements prescribed in the proposed language. Air curtains have been installed in buildings for over 60 years. The energy savings that air curtains provide has been thoroughly documented in the extensive research conducted by Concordia University.

9. 3rd Public Review ISC of BSR/ASHRAE/IES Addendum v to ANSI/ASHRAE/IES Standard 90.1- 2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

Most hospitals use reheat HVAC systems with simultaneous heating and cooling. Even with required air or water economizers, there are many hours with simultaneous heating and cooling use. It is generally lower cost to generate heating water with a heat recovery chiller or heat pump when the chilled water generated is useful than it is to use a boiler that complies with 90.1. Evaluation of a typical hospital in multiple climate zones shows a potential for reasonable recovery with a heat recovery chiller or heat pump that is sized between 7% and 12% of the cooling plant, depending on climate zone. For simplification, the minimum is set at 7% of total cooling load across the board.

These drafts are scheduled for a 45-day public review from Aug. 3 to Sept. 17:

1. 1st Public Review of BSR/ASHRAE/IES Addendum av to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum 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 in the Standard that will allow users to choose which method of evaluation (e.g. simple or complex) may be in the best interest of the building owner or building project without sacrificing the existing stringency.

2. 1st Public Review of BSR/ASHRAE/IES Addendum aw to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum revises the fenestration prescriptive criteria in Tables 5.5-0 through 5.5-8. Proposed changes were developed using both cost effectiveness analysis and engineering judgment.

3. 1st Public Review of BSR/ASHRAE/IES Addendum bb to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

The Lighting Subcommittee (LSC) has performed a wholesale review of the existing model for determining LPDs. Each space type LPD has been evaluated for compliance with the ANSI lighting standards. This addendum reflects the changes in LPDs.

4. 1st Public Review of BSR/ASHRAE/IES Addendum be to ANSI/ASHRAE/IES Standard 90.1-2016, Energy Standard for Buildings Except Low-Rise Residential Buildings

This addendum updates the efficiency requirements for Computer Room air conditioners as listed in table 6.8.1-11.

This draft is scheduled for a 30-day public review from Aug. 3 to Sept. 2:

3rd Public Review ISC of BSR/ASHRAE/IES Standard 90.2-2007R to ANSI/ASHRAE/IES Standard 90.2-2007, Energy-Efficient Design of Low-Rise Residential Buildings

This proposed revision of ASHRAE Standard 90.2 builds on the last public reviews and includes revisions to gain better alignment between this standard’s requirements and marketplace product availability as well as some revisions to improve the document’s clarity and internal consistency.  

This draft is scheduled for a 45-day public review from July 13 to Aug. 27:

2nd Public Review of BSR/ASHRAE Standard 118.1-2012R, Method of Testing for Rating Commercial Gas, Electric and Oil Service Water Heating Equipment

This revision of Standard 118.1-2012 updates the scope to be consistent with the Department of Energy’s July 15, 2015, final rule that establishes new definitions for “commercial” and “residential duty commercial” water heaters and revises the definitions of heat pump water heaters. Test methods and calculations are revised for all heat pump water heaters.

The revision also updates Setting Outlet Water Temperature for Heating capacity for Type 1, Type II, Type III, Type IV, and Type V heaters, adds new Standby Loss test method and calculations for Type II and Type III Instantaneous Waters, and updates references.

These drafts are scheduled for a 30-day public review from Aug. 17 to Sept. 16:

1.   First public review draft of BSR/ASHRAE Addendum a to ANSI/ASHRAE Standard 161-2018, Air Quality within Commercial Aircraft

This proposed addendum clarifies the units of measure in Sections 7.1 (Ozone) and 8.17 (Dry Ice) are parts per million by volume, not by weight.

2.    First public review draft of BSR/ASHRAE Addendum b to ANSI/ASHRAE Standard 161-2018, Air Quality within Commercial Aircraft

This proposed addendum removes a reference that is not applicable to this standard.

3.    First public review draft of BSR/ASHRAE Addendum c to ANSI/ASHRAE Standard 161-2018, Air Quality within Commercial Aircraft

This proposed addendum corrects an error in Section 8.6.b (Hydraulic Fluid) that refers to TCPs in hydraulic fluids (as TCPs are not added to hydraulic fluids). Also, in Sections 8.6.b and 8.7.b ((Engine Oil), the text is generalized to apply to reportable hazardous ingredients and the relevant reference is updated.

4.    First public review draft of BSR/ASHRAE Addendum d to ANSI/ASHRAE Standard 161-2018, Air Quality within Commercial Aircraft

This proposed addendum updates the definition of HEPA Filter Type A in Section 6.3.1 (Recirculated Air Quality) and updates the reference for this definition in Section 11 (References).

5.    First public review draft of BSR/ASHRAE Addendum e to ANSI/ASHRAE Standard 161-2018, Air Quality within Commercial Aircraft

This proposed addendum updates the filter type and reference of Section 6.3.1 (Recirculated Air Quality) and updates the respective reference in Section 11 (References).

This draft is scheduled for a 45-day public review from Aug. 3 to Sept. 17:

1. 1st Public Review of BSR/ASHRAE Addendum a to ANSI/ASHRAE Standard 184-2016, Method of Test for Field Performance of Liquid-Chilling Systems

ANSI/ASHRAE Standard 184 was published in 2016 and prescribes methods of testing to measure performance, such as capacity and efficiency, of liquid-chilling systems as installed in the field within a building system. A key concept of the testing process is to conduct an analysis to estimate the uncertainty of both measurements and results calculated from those measurements.

Addendum a to the standard provides users of the standard additional guidance on conducting this analysis by adding two informative appendices to the standard.

This draft is scheduled for a 45-day public review from Aug. 10 to Sept. 24:

1st Advisory Public Review of ASHRAE Standard 207P, Laboratory Method of Test of Fault Detection and Diagnostics for Airside Economizers

Standard 207P provides methods for laboratory testing of fault detection and diagnostic (FDD) systems to determine whether they perform as specified. 

The following is a 45-day public review from July 27 to Sept. 10.

1st Public Review of ASHRAE Guideline 1.4-2014R, Preparing Systems Manuals for Facilities

This guideline provides procedures for producing a Systems Manual as a resource for training, operations, maintenance and upgrading of facilities.

The following is under a 45-day public review from July 20 to Sept. 3:

1st Public Review of ASHRAE Guideline 6-2015R, Refrigerant Information Recommended for Product Development and Standards.

This guideline identifies the types of refrigerant data that may be required by product development and system design engineers, ASHRAE standards and appropriate codes to successfully apply a refrigerant in refrigeration or air conditioning equipment.

This guideline also provides refrigerant suppliers and researchers with examples of measurement methods, previous research and desired accuracy levels for various refrigerant properties.