All addenda issued to the 2013 edition have been included in Standard 170-2017. Note d: High-Efficiency Particulate Air (HEPA) filters are those filters that remove at least 99.97% of 0.3 micron-sized particles at the rated flow in accordance with the testing methods of IEST RP-CC001.3 (see Informative Annex B, Bibliography). The 2017 edition of ANSI/ASHRAE/ASHE Standard 170: Ventilation of Health. 2 if a tertiary terminal HEPA filter is provided for these spaces. Note c: As an alternative, MERV-14 rated filters may be used in Filter Bank No. Note b: Additional prefilters may be used to reduce maintenance for filters with efficiencies higher than MERV 7. * NR= not required Note a: The minimum efficiency reporting value (MERV) is based on the method of testing described in ANSI/ASHRAE Standard 52.2-2007, Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size (see Informative Annex B: Bibliography). ANSI/ASHRAE/ASHE Standard 170-2008 Ventilation of Health Care Facilities Approved by the ASHRAE Standards Committee on Septemby the ASHRAE Board of Directors on Novemby the ASHE Board of Directors on Septemand by the American National Standards Institute on December 5, 2013. Laboratories class A surgery and associated semi-restricted spaces Protective environment (PE) rooms 7 (HEPA)c,d In patient care, treatment, and diagnosis, and those spaces providing direct service or clean supplies and clean processing (except as noted below) AII rooms

Space Designation (According to Function)Д¬lasses B and C Surgery, inpatient and ambulatory diagnostic and therapeutic radiology, inpatient delivery and recovery services ANSI /ASHRAE /ASHE Standard 170-2008 Table 6-1 Minimum Filter Efficiencies Interpretation 170-2013-1 (Refers to the requirements in ANSI/ASHRAE/ASHE Standard 170-2013, Section 6 and Table 6.7.2, regarding Operating room.

Ashrae 170 2013 pdf