1、 2015 Standard for Performance Rating of Residential Air Filter Equipment Approved by ANSI on July 8, 2016 ANSI/AHRI Standard 681 (SI)-2015 Price $10.00 (M) $20.00 (NM) Copyright 2015, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A Registered United States Patent and Trad
2、emark Office Note: This standard supersedes ANSI/AHRI Standard 681(SI)-2009. For I-P ratings, see AHRI Standard 680 (I-P)-2015. IMPORTANT SAFETY DISCLAIMER AHRI does not set safety standards and does not certify or guarantee the safety of any products, components or systems designed, tested, rated,
3、installed or operated in accordance with this standard/guideline. It is strongly recommended that products be designed, constructed, assembled, installed and operated in accordance with nationally recognized safety standards and code requirements appropriate for products covered by this standard/gui
4、deline. AHRI uses its best efforts to develop standards/guidelines employing state-of-the-art and accepted industry practices. AHRI does not certify or guarantee that any tests conducted under its standards/guidelines will be non-hazardous or free from risk. TABLE OF CONTENTS SECTION PAGE Section 1.
5、 Purpose . 1 Section 2. Scope . 1 Section 3. Definitions. 1 Section 4. Classifications . 2 Section 5. Test Requirements. 3 Section 6. Rating Requirements 5 Section 7. Minimum Data Requirements for Published Ratings 7 Section 8. Operating Requirements . 7 Section 9. Marking and Nameplate Data . 7 Sec
6、tion 10. Conformance Conditions 7 TABLES Table 1. Example of Format for Published Rating . 6 APPENDICES Appendix A. References Normative 8 Appendix B. References Informative 8 Appendix C. AHRI Standard 681 Air Filter Equipment Report Summary Normative . 9 Appendix D. Method of Test for Ozone Concent
7、ration for Group RIII Air Filter Equipment Normative 10AHRI STANDARD 681 (SI)-2015 1 PERFORMANCE RATING OF RESIDENTIAL AIR FILTER EQUIPMENT Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish for residential Air Filter Equipment: definitions; classifications; test requiremen
8、ts; rating requirements; minimum data requirements for Published Ratings; operating requirements; marking and nameplate data; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users. 1
9、.1.2 Review and Amendment. This standard is subject to review and amendment as technology advances. Section 2. Scope 2.1 Scope. This standard applies to factory-made Air Filter Equipment and Air Filter Media, as used in such equipment, for removing particulate matter, when used in environmental cond
10、itioning of inhabited spaces in residential facilities. The standard evaluates the “combined” performance of Air Filter Equipment in all aspects: Initial Resistance, Final Resistance, particle size efficiency, and Dust Holding Capacity. This offers both the user and specifier a complete view of the
11、Air Filter Equipment for comparison purposes. 2.2 Exclusions. This standard does not apply to the following: 2.2.1 Air Filter Equipment and Air Filter Media for removing particulate matter, when used in industrial or commercial processes not associated with environmental conditioning of inhabited sp
12、ace. 2.2.2 Air Filter Equipment when used in removing abnormally high concentrations of specific contaminants. 2.2.3 Portable appliances which include Air Filter Equipment in combination with fans, coils, dampers, etc., but can be applied to the Air Filter Equipment as used therein. 2.2.4 Commercial
13、 and industrial Air Filter Equipment covered by ANSI/AHRI Standard 851 (SI). Section 3. Definitions All terms in this document will follow the standard industry definitions in the ASHRAE Wikipedia website (https:/www.ashrae.org/resources-publications/free-resources/ashrae-terminology) unless otherwi
14、se defined in this Section. 3.1 Air Filter Equipment. Air cleaning equipment used for removing particulate matter. 3.2 Air Filter Media. The part of the Air Filter Equipment, which is the actual particulate removing agent. In the case of Group RII equipment (Section 4), the terms charging section an
15、d/or collecting section shall be used. 3.3 Dust Holding Capacity. The amount of dust captured on the Air Filter Equipment. Dust Holding Capacity shall be established at the Maximum Rated Airflow Rate of the Air Filter Equipment as published by the manufacturer. 3.4 Final Resistance. The resistance o
16、f the Air Filter Equipment operating at its Maximum Rated Airflow Rate, at which the test is terminated and result calculated. 3.5 Initial Resistance. The resistance of the Air Filter Equipment operating at its rated range of airflow rates with no dust load per Section 5.4.1. 3.6 Loading Dust. A com
17、pound synthetic dust used for Air Filter Equipment loading. It is composed, by weight, of 93.5% ISO fine test dust (ISO Standard 12103-1, A2 Fine Test Dust) and 6.5% milled cotton linters (CAS# 9004-34-6). AHRI STANDARD 681 (SI)-2015 2 3.7 Maximum Rated Airflow Rate. The highest airflow rate at whic
18、h the Air Filter Equipment is operated as published by the manufacturer. 3.8 Particle Size Efficiency. The fraction (percentage) of particles that are captured on the Air Filter Equipment. Particle Size Efficiency shall be measured in three particle size ranges: 0.3-1.0, 1.0-3.0, 3.0-10 microns. Par
19、ticle Size Efficiency shall be established at the Maximum Rated Airflow Rate of the equipment as published by the manufacturer. 3.9 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit may be chosen to fit the appl
20、ication. These values apply to all units of like nominal capacity and type (identification) produced by the same manufacturer. As used herein, the term Published Rating includes the rating of all performance characteristics shown on the unit or published in specifications, advertising or other liter
21、ature controlled by the manufacturer, at stated Rating Conditions. 3.9.1 Application Rating. A rating based on tests performed at application Rating Conditions (other than Standard Rating Conditions). 3.9.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.10 Rating
22、 Conditions. Any set of operating conditions under which a single level of performance results and which causes only that level of performance to occur. 3.10.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.11 Sealing Means. Edge seal
23、s to prevent air bypass under rated operating conditions. 3.12 “Shall“ or “Should.“ “Shall“ or “should“ shall be interpreted as follows: 3.12.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.12.2 Should
24、. “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. 3.13 Standard Equipment. The minimum assembly of components required to qualify equipment within one of the classification groups. 3.14 Support. The means necessary to place the Air Filter Med
25、ia in the air stream and to prevent air bypass around the filter assembly under maximum rated operating conditions. 3.15 Test Aerosol. A polydisperse solid-phase (i.e., dry) potassium chloride (KCl) granules generated from aqueous solution, used in this standard to determine Particle Size Efficiency
26、 of the air cleaning equipment. Section 4. Classifications 4.1 Groups. For the purpose of this standard, Air Filter Equipment and Air Filter Media are classified into groups: 4.1.1 Group RI - Panel or Pleated 4.1.2 Group RII - Electronic air cleaner 4.1.3 Group RIII - Air Filter Media (for Group RI)
27、 AHRI STANDARD 681 (SI)-2015 3 4.2 Descriptions. 4.2.1 Group RI. This group of filters shall include panel or pleated type Air Filter Equipment. Panel type Air Filter Equipment is characterized by flat shallow assemblies in which the velocity of the air stream approaches the velocity through the Air
28、 Filter Media. Pleated type Air Filter Equipment is characterized by pleated or pocket configuration, wherein the approach velocity of the air stream is substantially greater than the velocity through the Air Filter Media. The equipment may be of the permanent cleanable type, or of the disposable no
29、n-renewable type, and may be dry or viscous-coated. Viscous impingement filters are included in this group. 4.2.2 Group RII. This group of Air Filter Equipment shall include electronic air cleaners. Equipment of this type uses high voltage electrostatic principles to collect particulate matter. Thes
30、e filters may be of single-stage or multiple-stage configuration. Part or all of the charging and/or collecting sections may be manually cleanable, automatically cleanable, or disposable. This group is only for products with active power supplies. 4.2.3 Group RIII. This group of filters shall includ
31、e the filter media component used in Air Filter Equipment in Group RI. The filter shall be tested in, as used conditions. 4.3 Standard Equipment. Standard Equipment for Groups RI, RII and RIII is specified in this Section. 4.3.1 Equipment which is classified as Group RI and RIII Air Filter Equipment
32、 shall consist of: 4.3.1.1 Air Filter Media 4.3.1.2 Support 4.3.1.3 Sealing Means 4.3.2 Equipment which is classified as Group RII shall consist of: 4.3.2.1 High voltage power supply isa means of supplying high voltage for the Air Filter Equipment. 4.3.2.2 Support 4.3.2.3 Sealing Means, if applicabl
33、e 4.3.2.4 Safety controls are a means of positively breaking line voltage power to the device. 4.3.2.5 Operating controls 4.3.2.6 Collecting section is a means of collecting particulate matter. Examples are: 4.3.2.6.1 Electrically charged surfaces which may be viscous coated and which may require pe
34、riodic cleaning. 4.3.2.6.2 Electrically charged surfaces which hold the collected particles plus a secondary downstream filter which collects the re-entrained particles. 4.3.2.6.3 Air Filter Media and electrically charged active and/or passive grid(s). 4.3.2.7 Charging section (multi-stage equipment
35、 only) is the section of the equipment which imparts an electrical charge to the particulate matter. 4.3.2.8 Connectors are a means of transferring high voltage from the power source to the collecting and/or charging section. 4.3.3 Optional Equipment. Optional equipment may include: viscous coatings
36、, frames, automatic control systems, wash accessories or washing systems, pre-filters or after-filters. Section 5. Test Requirements 5.1 Test Apparatus. The test apparatus requirements and qualification shall be per ANSI/ASHRAE Standard 52.2. 5.2 Test Materials. 5.2.1 Test Aerosol. The Test Aerosol
37、shall be solid-phase potassium chloride (KCl) per ASHRAE Standard 52.2. 5.2.2 Loading Dust. The Loading Dust for testing the Air Filter Equipment shall be composed, by weight, of 93.5% ISO fine test dust (ISO Standard 12103-1, A2 Fine Test Dust) and 6.5% milled cotton linters (CAS# 9004-34-6). The A
38、HRI STANDARD 681 (SI)-2015 4 Loading Dust shall contain no powdered carbon. Other details of the Loading Dust shall be per ASHRAE Standard 52.2. 5.3 Equipment Preparation. The complete Air Filter Equipment shall be prepared in accordance with the manufacturers recommendations. Preparation shall incl
39、ude: 5.3.1 Application (type, amount and method) of viscous coating 5.3.2 Proper mounting of the equipment to ensure the flow of air through the Air Filter Media 5.3.3 Sealing of test device with the test duct to avoid leakage or dust accumulation 5.3.4 Any other preparations that are recommended by
40、 the manufacturer in order to demonstrate the equipments intended performance. Airflow across the equipment is not required during the run-in period. 5.4 Test Procedure. The Air Filter Equipment shall be tested for Initial Resistance, Particle Size Efficiency, Final Resistance, and Dust Holding Capa
41、city. 5.4.1 Initial Resistance. The test shall be run and reported for the range of airflow rates as published by the manufacturer, including the Maximum Rated Airflow Rate. The selected airflow rates shall be in multiples of 680 m3/h. If the Maximum Rated Airflow Rate is not a multiple of 500 m3/h,
42、 then report Initial Resistance at multiples of 680 m3/h, and any fraction thereof, to include the Maximum Rated Airflow Rate. For example, if the Maximum Rated Airflow Rate as published by the manufacturer is 3060 m3/h, then the Initial Resistance shall be reported at 680, 1360, 2040, 2720, and 340
43、0 m3/h, respectively. For Air Filter Equipment with disposable media, the Initial Resistance shall be determined for new media. For Air Filter Equipment with cleanable media, the Initial Resistance shall be determined for an equipment that has been cleaned according to the manufacturers instructions
44、 after it had been loaded per Section 5.4.3 of this standard. 5.4.2 Particle Size Efficiency. The test shall be run and reported at the Maximum Rated Airflow Rate as published by the manufacturer. 5.4.2.1 The Particle Size Efficiency measurements shall be made in twelve particle size ranges or bins
45、between 0.30 m and 10 m as per ASHRAE Standard 52.2. 5.4.2.2 Particle Size Efficiency measurements shall be first conducted for clean Air Filter Equipment. For Air Filter Equipment with cleanable media, the clean Air Filter Equipment shall be one that has been cleaned according to the manufacturers
46、instructions after it has been loaded per Section 5.4.3 of this standard. 5.4.2.3 Particle Size Efficiency measurements shall then be repeated after the dust loading steps are completed as per Section 5.4.3. 5.4.2.4 The average of the two measurements (clean and loaded) at each of the twelve particl
47、e size ranges or bins shall be calculated. 5.4.2.5 The Particle Size Efficiency in the range of 0.3 m to 1.0 m is calculated as the average of the four size ranges from 0.3 m to 1.0 m in Section 5.4.2.4. 5.4.2.6 The Particle Size Efficiency in the range of 1.0 m to 3.0 m is calculated as the average
48、 of the four size ranges from 1.0 m to 3.0 m in Section 5.4.2.4. 5.4.2.7 The Particle Size Efficiency in the range of 3.0 m to 10 m is calculated as the average of the four size ranges from 3.0 m to 10.0 m in Section 5.4.2.4. 5.4.3 Dust Holding Capacity. Dust Holding Capacity shall be tested and rep
49、orted at the Maximum Rated Airflow Rate as published by the manufacturer. The Loading Dust is as specified in Section 5.2.2. Recommended dust feed rate is 70 7 mg/m3. Lower dust feed rate can be used but shall be reported in the results. 5.4.3.1 Weigh the clean Air Filter Equipment to the nearest 0.1 g. 5.4.3.2 Install the Air Filter Equipment in the test duct and feed the Loading Dust in one or multiple intervals until either of the following conditions occur, whichever comes first: AHRI STANDARD 681 (SI)-2015 5 5.4.3.2.1 The resistance
