1、Page 1 of 3 2015 ASHRAE. All rights reserved. ERRATA SHEET FOR ANSI/ASHRAE STANDARD 52.2-2012 Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size June 29, 2015 The corrections listed in this errata sheet apply to all copies of ANSI/ASHRAE Standard 52.2-
2、2012. The first printing is identified on the outside back cover as “Product code: 86145 1/13” and the second printing as “Product code: 86145 6/13 Errata noted in the list dated 5/23/13 have been corrected.” The shaded items have been added since the previously published errata sheet dated November
3、 12, 2014 was distributed. Items identified with an asterisk “*” apply only to the first printing, they have already been incorporated into the second printing. Page Erratum 23 10.7.1.1. Modify the second sentence in Section 10.7.1.1 as shown below. (Note: additions are shown in underline and deleti
4、ons are shown in strikethrough.) 10.7.1 Test Procedure 10.7.1.1 The test airflow rate shall be selected in accordance with Section 8.1. The final resistance shall be chosen using the Table 12-1 values as minimum, except that the final resistance shall be equal to or greater than twice the initial re
5、sistance. 28 TABLE 12-1 Minimum Efficiency Reporting Value (MERV) Parameters. Delete the note to Table 12-1 as shown below. (Note: additions are shown in underline and deletions are shown in strikethrough.) Note: The minimum final resistance shall be at least twice the initial resistance, or as spec
6、ified above, whichever is greater. Refer to Section 10.7.1.1.4545 TABLE E-1 Application Guidelines. Delete MERV 20, 19, 18, and 17 from Table E-1 (first four rows) in Informative Appendix E. Also, delete columns 2 and 3 of Table E-1 (under “Approx. Std. 52.1 Results”) for the remaining MERV. See att
7、ached revisions to Table E-1 highlighted in red text. (Note: additions are shown in underline and deletions are shown in strikethrough.)53* J11.3.3. In Section J11.3.3 change the reference to “Table I-2” to “Table J-2”. Page 2 of 3 2015 ASHRAE. All rights reserved. TABLE E-1 Application Guidelines S
8、td. 52.2 Minimum Efficiency Approx. Std. 52.1 Results Application Guidelines Reporting Value Dust Spot Efficiency Arrestance Typical Controlled Contaminant Typical Applications and Limitations Typical Air Filter/Cleaner Type (MERV) 20 19 n/a n/a n/a n/a 0.30 m Particle Size Virus (unattached) Carbon
9、 dustCleanrooms Radioactive materials PharmaceuticalHEPA/ULPA Filters 99.999% efficiency on 0.100.20 m 18 n/a n/a Sea salt All combustion smoke manufacturing Carcinogenicparticles, IEST Type F 99.999% efficiency on 0.30 m 17 n/a n/a Radon progeny materials Orthopedic surgeryparticles, IEST Type D 99
10、.99% efficiency on 0.30 mparticles, IEST Type C 99.97% efficiency on 0.30 m particles, IEST Type A 16 15 n/a 95% n/a n/a 0.301.0 m Particle SizeAll bacteria Most tobacco smokeHospital inpatient care General surgery Smoking loungesBag Filters Nonsupported (flexi- ble) microfine fiberglass or syn- the
11、tic media. 300 to 900 mm (12 to14 90%95% 98% Droplet nuclei (sneeze) Cooking oilSuperior commercial buildings36 in.) deep, 6 to 12 pockets. Box Filters Rigid style cartridge 13 80%90% 98% Most smokeInsecticide dust filters 150 to 300 mm (6 to 12 in.)deep may use lofted (air laid) or Copier toner Mos
12、t face powder Most paint pigments paper (wet laid) media.12 70%75% 95% 1.03.0 m Particle Size LegionellaSuperior residential Bag Filters Nonsupported (flexi- Better commercial ble) microfine fiberglass or syn-11 10 60%65% 50%55% 95% 95% Humidifier dustLead dust Milled flour buildingsHospital laborat
13、ories thetic media. 300 to 900 mm (12 to36 in.) deep, 6 to 12 pockets. Box Filters Rigid style cartridge 9 40%45% 90% Coal dust Auto emissions filters 150 to 300 mm (6 to 12 in.) deep may use lofted (air laid) or Nebulizer drops Welding fumes paper (wet laid) media.8 30%35% 7 25%30% 6 90% 90% 85%90%
14、 80%85% 75%80% 3.010.0 m Particle Size Mold Spores Hair spray Fabric protector Dusting aids Cement dust Pudding mix Snuff Powdered milk 10.0 m Particle Size Pollen Commercial buildings Better residential Industrial workplaces Paint booth inlet air Minimum filtration Residential Pleated Filters Dispo
15、sable, extended surface, 25 to 125mm (1 to 5 in.) thick with cotton- polyester blend media, cardboard frame. Cartridge Filters Graded density viscous coated cube or pocket fil- ters, synthetic media Throwaway Disposable synthetic media panel filters Throwaway Disposable fiberglass or synthetic panel
16、 filters 3 20% 2 20% 1 20% 70%75% 65%70% 65% Spanish moss Dust mites Sanding dust Spray paint dust Textile fibers Carpet fibers Window air conditioners Washable Aluminum mesh, latex coated animal hair, or foam rubber panel filters Electrostatic Self charging (passive) woven polycarbonate panel filter Note: A MERV for other than HEPA/ULPA filters also includes a test airflow rate, but it is not shown here because it has no significance for the purposes of this table.
