ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc.
Scope
FOREWORD This addendum adds the option of using a filter tested in accordance with AHRI Standard 680-2009@ which relies on procedures specified in ANSI/ASHRAE Standard 52.2-2007. Note: This change is responsive to interpretation request IC 62.2-2007-7 currently posted on the ASHRAE Web site at www.ashrae.org/technology/page/121 . Note: In this addendum@ changes to the current standard are indicated in the text by underlining (for additions) and (for deletions) unless the instructions specifically mention some other means of indicating the changes.