1、 AHRI Standard 681 (SI) - 20092009 Standard for Performance Rating of Residential Air Filter EquipmentIMPORTANT 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, installed or operated in a
2、ccordance 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/guideline. AHRI uses its best
3、 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. Note: This standard supersedes ARI Standard 680-2004. For I-P ratin
4、gs, see AHRI Standard 680 (I-P)-2009. Price $16.00 (M) $32.00 (NM) Copyright 2009, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A. Registered United States Patent and Trademark Office TABLE OF CONTENTS SECTION PAGE Section 1. Purpose 1 Section 2. Scope1 Section 3. Definit
5、ions .1 Section 4. Classifications2 Section 5. Test Requirements .3 Section 6. Rating Requirements .5 Section 7. Minimum Data Requirements for Published Ratings 6 Section 8. Operating Requirements 6 Section 9. Marking and Nameplate Data 7 Section 10. Conformance Conditions .7 APPENDICES Appendix A.
6、References Normative.8 Appendix B. References Informative.8 Appendix C. AHRI Standard 680 Air Filter Equipment Report Summary Normative .9 Appendix D. Method of Test for Ozone Concentration for Group RII Air Filter Equipment Normative 10AHRI STANDARD 681 (SI)-2009 1 PERFORMANCE RATING OF RESIDENTIAL
7、 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 requirements; rating requirements; minimum data requirements for Published Ratings; operating requirements; marking and nameplat
8、e 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. 1.1.2 Review and Amendment. This standard is subject to review and amendment as technology advances. Section 2. Scope 2
9、.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 conditioning of inhabited spaces in residential facilities. The standard evaluates the “combined” performance of Air Filte
10、r Equipment in all aspects: airflow resistance, particle size efficiency, and Dust Holding Capacity. This offers both the user and specifier a complete view of the Air Filter Equipment for comparison purposes. 2.2 Exclusions. This standard does not apply to the following: 2.2.1 Air Filter Equipment
11、and Air Filter Media for removing particulate matter, when used in industrial or commercial processes not associated with environmental conditioning of inhabited space. 2.2.2 Air Filter Equipment when used in removing abnormally high concentrations of specific contaminants. 2.2.3 Appliances which in
12、clude 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 and industrial Air Filter Equipment covered by AHRI Standard 850. Section 3. Definitions All terms in this document shall follow the standard in
13、dustry definitions in the current edition of ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Refrigeration unless otherwise 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 Filte
14、r Equipment, which is the actual particulate removing agent. In the case of Group RII equipment (Section 4), the terms charging section and/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 establis
15、hed at the Maximum Rated Airflow Rate of the Air Filter Equipment as published by the manufacturer. 3.4 Final Resistance. The resistance of 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 resista
16、nce of the Air Filter Equipment operating at its rated airflow rate with no dust load. 3.6 Loading Dust. A compound 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) and 6.5% milled cotton linters (CAS# 9004-34-6).
17、 AHRI STANDARD 681 (SI)-2009 2 3.7 Maximum Rated Airflow Rate. The highest airflow rate at which 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 Ef
18、ficiency shall be measured in three particle size ranges: 0.3-1.0, 1.0-3.0, 3.0-10 microns. Particle 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
19、 characteristics, under stated Rating Conditions, by which a unit may be chosen to fit the application. 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 performan
20、ce characteristics shown on the unit or published in specifications, advertising or other literature 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.
21、2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.10 Rating 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
22、 used as the basis of comparison for performance characteristics. 3.11 Sealing Means. Edge seals to prevent air bypass under maximum 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 pro
23、vision specified, that provision is mandatory if compliance with the standard is claimed. 3.12.2 Should. “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
24、 within one of the classification groups. 3.14 Support. The means necessary to support the Air Filter Media in the air stream and to prevent air bypass around the filter assembly under maximum rated operating conditions. 3.15 Test Aerosol. Polydisperse solid-phase (i.e., dry) potassium chloride (KCl
25、) particles generated from an aqueous solution, used in this standard to determine Particle Size Efficiency 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: Group RI - Panel o
26、r Pleated Group RII - Electronic air cleaner Group RIII - Air Filter Media (for Group RI) 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 velocit
27、y of the air stream approaches the velocity through the Air 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
28、be of the permanent cleanable type, or of the disposable non-renewable type, and may be dry or viscous-coated. Viscous impingement filters are included in this group. AHRI STANDARD 681 (SI)-2009 3 4.2.2 Group RII. This group of Air Filter Equipment shall include electronic air cleaners. Equipment of
29、 this type uses high voltage electrostatic principles to collect particulate matter. These 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. 4.2.3 Group RIII. This
30、group of filters shall include 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 a
31、nd RIII Air Filter Equipment shall consist of: a. Air Filter Media b. Support c. Sealing Means 4.3.2 Equipment which is classified as Group RII shall consist of: a. High voltage power supply - A means of supplying high voltage for the Air Filter Equipment. b. Support c. Sealing Means, if applicable
32、d. Safety controls - A means of positively breaking line voltage power to the device. e. Operating controls f. Collecting section - A means of collecting particulate matter. Examples are: 1. Electrically charged surfaces which may be viscous coated and which may require periodic cleaning 2. Electric
33、ally charged surfaces which hold the collected particles plus a secondary downstream filter which collects the re-entrained particles 3. Air Filter Media and electrically charged active and/or passive grid(s) g. Charging section (multi-stage equipment only) - The section of the equipment which impar
34、ts an electrical charge to the particulate matter. h. Connectors - 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, frames, automatic control systems, wash accessories or
35、washing systems, pre-filters or after-filters. Section 5. Test Requirements 5.1 Test Apparatus. The test apparatus requirements and qualification shall be per ASHRAE Standard 52.2. 5.2 Test Materials. 5.2.1 Test Aerosol. The Test Aerosol shall be solid-phase potassium chloride (KCl) per ASHRAE Stand
36、ard 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) and 6.5% milled cotton linters (CAS# 9004-34-6). The Loading Dust shall contain no powdered carbon. Other details of the Loading Du
37、st shall be per ASHRAE 52.2 Standard. 5.3 Equipment Preparation. The Air Filter Equipment shall be prepared in accordance with the manufacturers recommendations. Preparation shall include: a. Application (type, amount and method) of viscous coating b. Proper mounting of the equipment to ensure the f
38、low of air through the Air Filter Media c. Sealing of test device with the test duct to avoid leakage or dust accumulation AHRI STANDARD 681 (SI)-2009 4 d. Any other preparations that are recommended by the manufacturer in order to demonstrate the equipments intended performance. Airflow across the
39、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 Capacity. 5.4.1 Initial Resistance. The test shall be run and reported for the range of airflow rates
40、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 680 m3/h, then report Initial Resistance at multiples of 680 m3/h, and any fraction thereof, to include the
41、 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 3060 m3/h, respectively. For Air Filter Equipment with disposable media, the Initial Resistance shall
42、 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 after it had been loaded per 5.4.3 of this standard. 5.4.2 Particle Size Efficiency. The test sha
43、ll 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 between 0.30 m and 10 m as per ASHRAE Standard 52.2. 5.4.2.2 Particle Size Efficiency measurements shall b
44、e 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 instructions after it has been loaded per Section 5.4.3 of this standard. 5.4.2.3 Particle Size Efficiency
45、 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 particle size ranges or bins shall be calculated. 5.4.2.5 The Particle Size Efficiency in the range of 0.3 m to 1
46、.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 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 t
47、he 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 reported at the Maximum Rated Airflow Rate as published by the manufacturer. The Loading Dust is as specified
48、 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 multipl
49、e intervals until either of the following conditions occur, whichever comes first: 5.4.3.2.1 The resistance of the Air Filter Equipment reaches 125 Pa. 5.4.3.2.2 The Particle Size Efficiency falls below 75% of the clean Air Filter Equipment value in any of the particle size ranges that measure Particle Size Efficiency of 50% or more for a clean filter equipment. If more than one particle size ranges measure Particle Size Efficiency of 50% or more, the smaller particle size range shall be used for the 75% limit. AHRI STANDARD 681 (SI)-2009 5
