Public Reviews, March 2019
ASHRAE Standard 18-2008 RA-2013, Methods of Testing for Rating Drinking-Water Coolers with Self-Contained Mechanical Refrigeration
The following is under a 45-day public review from Feb. 8 to March 25:
1st Withdrawal Public Review of ASHRAE Standard 18-2008 RA2013
The Technical Committee supports the withdrawal based on a lack of support to revise the document. This standard has no reported sales and has since lost its ANSI’s designation.
BSR/ASHRAE Standard 24- 2013R, Methods of Testing for Rating Evaporators Used for Cooling Liquids
The following is under a 45-day public review from Feb. 8 to March 25:
1st Public Review of BSR/ASHRAE Standard 24- 2013R
This revision of Standard 24-2013 updates references, makes minor editorial changes, and adds a requirement for both uncertainty analysis and the use of liquid enthalpy for the calculation of total refrigerant capacity.
ANSI/ASHRAE Standard 34-2016, Designation and Safety Classification of Refrigerants
The following are under a 30-day public review from March 15 to April 14:
This addendum adds the zeotropic refrigerant blend R467A in Table 4-2.
This addendum adds the zeotropic refrigerant blend R468A in Table 4-2.
BSR/ASHRAE Standard 41.8-2016RA, Standard Methods for Liquid Flow Measurement
The following is under a 45-day public review from March 1 to April 15:
1st Public Review of BSR/ASHRAE Standard 41.8-2016RA
This standard applies to laboratory and field liquid flow measurement for testing heating, ventilating, air-conditioning, and refrigerating systems and components.
ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality
The following is under a 45-day public review from Feb. 8 to March 25:
2nd Public Review of BSR/ASHRAE Addendum s
The ventilation rate procedure in 62.1-2016 contains requirements in notes. This proposed addendum relocates requirements to the body of the standard. Another proposed change is to clarify that in the presence of unusual sources the rates in the VRP must be supplemented by additional ventilation to be determined by the IAQ procedure or an EHS professional. The default values per person in Table 6.2.2.1 (Minimum Ventilation Rates in Breathing Zone) do not contain any adjustments for Ev and in many cases are taken out of context. They are not used in the ventilation calculations. These values are deleted.
The following are under a 30-day public review from March 22 to April 21:
The current standard contains exceptions for leakage from energy recovery systems. These exceptions have been misinterpreted and misapplied. The current definition of energy recovery ventilation systems is not used, and the term energy recovery device is not defined. The definition is therefore modified.
Since the original publication of Standard 62.1, ASHRAE published Standard 188-2015 Legionellosis: Risk Management for Building Water Systems. This proposed addendum requires advising the owner of the basic requirements of ASHRAE Standard 188.
The indoor air quality procedure has a long history going back to the 1981 standard. Weaknesses in the 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. This proposed addendum adds requirements for designing to specific targets. The target design compounds and mixtures are specifically identified.
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.
This proposed addendum adds a maximum indoor air dewpoint in mechanically cooled buildings. The 60°F indoor air dewpoint limit avoids the microbial growth problems frequently observed when humid outdoor air infiltrates into buildings. Humidity-related requirements of earlier versions of 62.1 were intended to address both mold growth and comfort concerns by limiting indoor humidity to 65%RH but did not explicitly extend to unoccupied hours when microbial growth often accelerates and because it did not establish a coincident dry bulb temperature and did not limit the mass of water vapor available for surface absorption during periods when cooling is intermittent to conserve energy.
The 2018 FGI (Facilities Guidelines Institute) guideline requires certain outpatient spaces to meet local ventilation codes and not ASHRAE/ASHE Standard 170: Neither one of the two mechanical model codes (IMC and UMC) has ventilation rates for these spaces. The IMC and UMC use ASHRAE Standard 62.1 as basis for their ventilation table. This proposed addendum adds ventilation rates for those spaces in order to bridge the gap with ASHRAE/ASHE Standard 170. It was developed in consultation with FGI in order to understand the activity in each space.
This proposed addendum removes language published in Addendum q to Standard 62.1-2016. It reinstates the option of using indirect measurement techniques in testing and balancing (TAB) of the ventilation system in startup.
The current standard is silent on producing ozone within HVAC equipment. In some countries, ozone generators are accepted as air cleaners. Ozone is harmful for health and exposure to ozone creates risk for a variety of symptoms and diseases associated with the respiratory tract. However, there is no consensus on the safe level of ozone. The current state of the science regarding the health effects of ozone strongly suggests that the use of air cleaners that emit ozone by design should not be permitted; the same information and advice is given by the U.S. EPA, among others. There are devices that emit ozone but at the same time reduce concentrations of other harmful contaminants.
This proposed addendum reduces the leakage of class 2 air into outdoor air from 10% to 5%. Leakage is measured as Exhaust Air Transfer Rate (EATR). From the AHRI-1060 database of air to air energy recovery: (1) Of the 670 plate and frame heat exchangers, 70 records show that the plates have exhaust air transfer ratio (EATR) The highest EATR = 3.7 (2) There are 1820 wheel records. 1040 of those are at 5% EATR or below. More than half of the certified products are below the threshold of 5% EATR. Further, fan orientation and pressure design can reduce or eliminate the EATR in the system design.
The current standard has no requirements for accuracy of CO2 sensors used for demand control ventilation. Various research projects show wide variation in accuracy and drift. This addendum proposes to adopt language from the 2013 California Title 24 Section 120.1(c)4.F.
When Addendum r to 62.1-2016 was published, the footnote to old Table 5.16.1 (Airstreams or Sources) did not transfer to new the Table 6.5.2 (Airstreams or Sources). This proposed addendum reinstates the note into Section 6.
Table 6.2.2.1 (Minimum Ventilation Rates in Breathing Zone) includes educational space types including Classroom (age 9 plus) and Lecture Classroom. The first of these does not have note H assigned and ventilation shut off is not allowed. Lecture Classroom has note H and ventilation shut off is allowed. However, for college buildings, it is not clear which of these space types should be assigned to the classroom spaces. This proposed addendum clarifies that college classrooms may use note H and have the ventilation shut off when they are unoccupied.
This proposed addendum updates some of the edition year and web references to the references listed in Section 9 and Informative Appendix J.
Many manufacturing occupancies do not use hazardous materials. This proposed addendum changes the air class for those spaces to air class 2. That allows the air to be recirculated to other similar manufacturing areas. Manufacturing spaces using hazardous materials will remain air class 3.
This proposed addendum modifies language in Informative Appendix E (Acceptable Mass Balance Equations for Use with the IAQ Procedure) to be consistent with the current IAQP. It also clarifies that the equations do not include any potential compounds added by the HVAC system.
This proposed addendum adds a reference to ASHRAE/ASHE Standard 170 and exception to direct users to use the ventilation rates in ASHRAE/ASHE Standard 170 for asepsis and odor control for healthcare spaces listed in ASHRAE/ASHE Standard 170.
The following are under a 45-day public review from March 22 to May 6:
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).
This proposed addendum replaces the calculation method in current Normative Appendix B2 (Separation of Exhaust Outlets and Outdoor Air Intakes) with a new method based upon ASHRAE RP-1635 (2016). This research was sponsored by ASHRAE TC 4.3. The purpose of this Research Project is to provide a simple, yet accurate procedure for calculating the minimum distance required between the outlet of an exhaust system and the outdoor air intake to a ventilation system to avoid re-entrainment of exhaust gases. The new procedure addresses the technical deficiencies in the simplified equations and tables that are currently in Standard 62.1-2016 and model building codes.
This proposed addendum clarifies and expands the values of zone air distribution effectiveness (Ez) in Table 6.2.2.1 and adds Normative Appendix X (Zone Air Distribution Effectiveness – Alternate Procedures) to provide a procedure for calculating zone air distribution effectiveness. Notes on Table 6.2.2.1 have also been removed and replaced with definitions or specific requirements within the language of the standard.
ANSI/ASHRAE Standard 62.2-2016, Ventilation and Acceptable Indoor Air Quality in Residential Buildings
The following is under a 30-day public review from March 22 to April 21:
BSR/ASHRAE Addendum t (Second Independent Substantive Change Public Review Draft)
This proposed change removes the potential for people to claim they would have installed a balanced system to avoid installing an unbalanced system. It also aligns the maximum airflow requirement that precludes the need to install a fan between new and existing homes.
ANSI/ASHRAE Standard 90.4-2016, Energy Standard for Data Centers
The following are under a 30-day public review from March 8 to April 7:
This addendum to the standard is being proposed to better align with current vintages of UPS technology in terms of performance and industry evolution over the period since the original publication of 90.4-2016.
This addendum revises MLC values to make them more in line with the intent of the standard.
This new compliance approach simplifies compliance for data centers and computer rooms such as small IDF closets in an office building that are served by a VAV box off of the house air handling system by providing an alternate compliance path.
ANSI/ ASHRAE/ICC/USGBC/IES 189.1-2017, Standard for the Design of High Performance Green Buildings Except Low-Rise Residential Buildings
The following are under a 30-day public review from March 8 to April 7:
This addendum identifies a number of requirements from Section 8 of Standard 189.1 as being appropriate for local jurisdictions to consider excluding from their adopting ordinances. A new Table 4.2 is added which lists these requirements in a format intended to simplify review by the jurisdiction.
In addition to addendum q this addendum identifies a number of requirements from Section 8 of Standard 189.1 as being appropriate for local jurisdictions to consider excluding from their adopting ordinances. A new Table 4.2 is added which lists these requirements in a format intended to simplify review by the jurisdiction.
This addendum modifies Section 6 of Standard 189.1 to identify requirements that are non-core. These requirements are listed in a new Table 4.2 to provide flexibility for local jurisdictions to adopt the code in a manner that is best suited to meet their unique environmental and regional goals and needs.
This addendum identifies a requirement from Section 9 of Standard 189.1 as being appropriate for local jurisdictions to consider excluding from their adopting ordinances. A new Table 4.2 is added which lists these requirements in a format intended to simplify review by the jurisdiction.
This addendum proposes to delete 8.3.6.3 in its entirety because flashing and sealants are addressed by the IBC and other model building codes.
This addendum proposes to add the word “new” to clarify that Sections 8.4.2.5 and 8.5.2 apply to new office furniture products.
This revision adds a requirement that buildings under 50,000 sf of conditioned floor area verify air tightness through leakage testing. The referenced Standard 90.1 has multiple options for verifying air tightness. This requirement directs new buildings under 50,000 sf of conditioned floor area and under 75 feet in height to comply with the testing option, and allows all other buildings to comply using any verification option.
This new section adds requirements for traction elevators. It is limited to elevators with a rise over 75 ft, so that it does not include shorter elevators where energy savings may not be substantial enough to justify the requirements. The requirements are also based on elevator rise height rather than building height so that they do not apply to shorter elevators that may be present in taller buildings. The proposal increases efficiency by requiring more efficient drive motors and regenerative braking.
This proposal creates a new section that requires the U-factor of mechanical equipment to be incorporated into the total U-factor of the wall when that equipment comprises over 1% of the wall area. This ensures that the thermal impact of significant mechanical penetrations is not ignored.
The following are under a 45-day public review from March 8 to April 22:
This addendum identifies a number of requirements from Section 5 of Standard 189.1 as being appropriate for local jurisdictions to consider excluding from their adopting ordinances. A new Table 4.2 is added which lists these requirements in a format intended to simplify review by the jurisdiction.
This addendum identifies a number of requirements from Section 7 of Standard 189.1 as being appropriate for local jurisdictions to consider excluding from their adopting ordinances. A new Table 4.2 is added which lists these requirements in a format intended to simplify review by the jurisdiction.
This addendum updates the source energy conversion factors in Table 7.5.3 and expands the list for eGRID subregions. These factors represent the energy required to extract, process, and deliver the fuel to the building per unit of energy in the fuel.
This addendum updates the CO2e emission factors in Table 7.5.2, expanding the list to add values for eGRID subregions. The table is also moved to Section 7.5.3 in expectation of being combined with source energy factor updates being added separately by Addendum z.
BSR/ASHRAE Standard 205P, Standard Representation of Performance Simulation Data for HVAC&R and Other Facility Equipment
The following is under a 60-day public review from Feb. 8 to April 9:
1st Public Review of BSR/ASHRAE Standard 205P
The purpose of ASHRAE Standard 205-201x is to facilitate sharing of equipment characteristics for performance simulation by defining standard representations such as data models, data formats, and automation interfaces.
ANSI/IAQA-RIA 6001-2011, Evaluation of HVAC/Mechanical System Surfaces to Determine the Impact from Fire Related Particulate
The following is under a 45-day public review from Feb. 8 to March 25:
1st Withdrawal Public Review of ANSI/IAQA-RIA 6001-2011
ASHRAE is announcing it is withdrawing this standard.
Guideline 27P, Measurement Procedures for Gaseous Contaminants in Commercial Buildings
The following is under a 45-day public review from March 8 to April 22:
Guideline 27P provides recommended procedures for effective measurement of airborne gas and vapor concentrations inside commercial buildings. Its goal is to provide consistent procedures to follow so field measurements of contaminant concentrations are accurate and reproducible, avoiding typical problems that may cause unreliable or inconsistent results, while recommending sample acquisition techniques, sampling locations in equipment and spaces, sampling requirements, and criteria for data analysis.
ASHRAE Guideline 29-2009R, Guideline for the Risk Management of Public Health and Safety in Buildings
The following is under a 60-day public review from Feb. 22 to April 23:
1st Public Review of ASHRAE Guideline 29-2009R
The purpose of Guideline 29-2009R is to provide guidance for the practical evaluation, design and implementation of measures to reduce multiple risks in new and existing buildings.
ASHRAE Guideline 41P, Design, Installation and Commissioning of Variable Refrigerant Flow (VRF) Systems
The following is under a 45-day public review from Feb. 8 to March 25:
1st Public Review of ASHRAE Guideline 41P
Guideline 41P provides a procedure for the design, installation, and commissioning of Variable Refrigerant Flow (VRF) systems.
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.