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NEWS
ASHRAE Issues Call For Comment - Addenda to Standard 90.1-2019
July 31, 2020

ASHRAE has announced the following Call for Comments regarding addenda to Standard 90.1-2019, Energy Standard for Buildings Except Low-Rise Residential Buildings:

• 1st Public Review of Addendum m: Adds a requirement for motorized dampers on shaft vents used for temperature control, which were shown to be cost effective for outdoor air and exhaust air openings in Section 6.4.3.4.2. This proposed addendum reduces stringency and costs in mild climates and short buildings by allowing nonmotorized dampers in lieu of motorized dampers, mirroring Exception 1 to Section 6.4.3.4.2.
• 1st Public Review of Addendum n: Adds an exception for units that use only series energy recovery for reheating dehumidified air to the requirements in Section 6.5.2.6.
• 2nd Public Review ISC of Addendum f: Corrects the instruction to multiply by the efficiency value in Table 6.5.1-2.

To view details, refer to the recent issue of ASHRAE’s Standards Action. Access the Public Review Drafts by visiting ASHRAE’s Standards, Research, & Technology/Public Review Drafts web page, and following the instructions to access the online comment database. To obtain a paper copy, contact ASHRAE. Deadline for public comment period is August 16, 2020.


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