AHRI 300-2008 Sound Rating and Sound Transmission Loss of Packaged Terminal Equipment.pdf

1、 2008 Standard for Sound Rating and Sound Transmission Loss of Packaged Terminal Equipment ANSI/AHRI Standard 300 (Formerly ARI Standard 300) Price $10.00 (M) $20.00 (NM) Copyright 2008, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A. Registered United States Patent and T

2、rademark Office 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, installed or operated in accordance with this standard/guideline. It is strongly recommended that products be de

3、signed, 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 efforts to develop standards/guidelines employing state-of-the-art and accepted indus

4、try 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 300-2000. Note: This version of the standard differs from the 2000 version of the standard in the following:

5、a. The tone adjusted A-Weighted Sound Power Level (LWAT) has been eliminated. b. An optional Sound Quality Indicator (SQI) per AHRI Standard 1140 has been added. c. This standard references AHRI Standard 220 for reverberation room qualification and testing, replacing ANSI Standard S12.31 and ANSI St

6、andard S12.32, which were withdrawn. TABLE OF CONTENTS SECTION PAGE Section 1. Purpose 1 Section 2. Scope .1 Section 3. Definitions .1 Section 4. Test Requirements .2 Section 5. Rating Requirements .3 Section 6. Minimum Data Requirements for Published Ratings 4 Section 7. Marking and Nameplate Data

7、4 Section 8. Conformance Conditions .4 APPENDICES Appendix A. References - Normative .5 Appendix B. References Informative 6 ANSI/AHRI STANDARD 300-2008 1 SOUND RATING AND SOUND TRANSMISSION LOSS OF PACKAGED TERMINAL EQUIPMENT Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establ

8、ish, for packaged terminal equipment: definitions; test requirements; rating requirements; minimum data requirements for Published Ratings; and conformance conditions. Additionally, this standard establishes a method to determine sound transmission loss for Packaged Terminal Equipment. 1.1.1 Intent.

9、 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 2.1 Scope. This standard applies to the indoor and

10、 outdoor sections of factory-made Packaged Terminal Equipment as defined in AHRI Standard 310/380. Section 3. Definitions All terms in this document shall follow the standard industry definitions established in the current edition of ASHRAE Terminology of Heating, Ventilation, Air-Conditioning and R

11、efrigeration, unless otherwise defined in this section. 3.1 Octave Band. A band of sound covering a range of frequencies such that the highest is twice the lowest. The Octave Bands used in this standard are those defined in ANSI Standard S1.11. 3.2 One-Third Octave Band. A band of sound covering a r

12、ange of frequencies such that the highest frequency is the cube root of two times the lowest. The One-Third Octave Bands used in this standard are those defined in ANSI Standard S1.11. 3.3 Outdoor-Indoor Transmission Class (OITC). The A-weighted sound reduction calculated using the equipment sound t

13、ransmission loss in the range of 80 to 4000 Hz, as measured in accordance with ASTM 1332 Test Method E90. 3.4 Packaged Terminal Air-Conditioner. A wall sleeve and a separate unencased combination of heating and cooling assemblies specified by the builder and intended for mounting through the wall. I

14、t includes a prime source of refrigeration, separable outdoor louvers, forced ventilation and heating availability by purchasers choice of at least hot water, steam or electric resistance heat. 3.5 Packaged Terminal Heat Pump. A separate unencased refrigeration system installed in a cabinet of simil

15、ar function and configuration to that of a Packaged Terminal Air-Conditioner. It utilizes reverse cycle refrigeration as its prime heat source and has other supplementary heat source availability by purchasers choice of at least hot water, steam or electric resistance heat. 3.6 Published Rating. A s

16、tatement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit may be chosen to fit its application. These values apply to all units of like nominal size and type (identification) produced by the same manufacturer. The term Published Rating incl

17、udes the ANSI/AHRI STANDARD 300-2008 2 rating of all performance characteristics shown on the unit or published in specifications, advertising or other literature controlled by the manufacturer, at stated Rating Conditions. 3.6.1 Application Rating. A rating based on tests performed at application R

18、ating Conditions (other than Standard Rating Conditions). 3.6.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.7 Rating Conditions. Any set of operating conditions under which a single level of performance results and which causes only that level of performance t

19、o occur. 3.7.1 Standard Rating Conditions. Rating conditions used as the basis of comparison for performance characteristics. 3.8 Reference Sound Source (RSS). A portable, aerodynamic sound source that produces a known stable broadband sound. 3.9 “Shall” or “Should”. “Shall” or “should” shall be int

20、erpreted as follows: 3.9.1 Shall. Where “shall” or “shall not” is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.9.2 Should. “Should” is used to indicate provisions which are not mandatory but which are desirable as good practice. 3.10 Sound

21、 Power Level, Lw. Ten times the logarithm to the base ten of the ratio of the sound power radiated by the source to a reference sound power, expressed in decibels (dB). The reference sound power used in this standard is 1 picowatt (pW). 3.10.1 A-Weighted Sound Power Level, LwA. The logarithmic summa

22、tion of A-Weighted, one-third octave band Sound Power Levels. 3.11 Sound Quality Indicator (SQI). The calculated metric determined when following the procedure contained in AHRI Standard 1140 for quantifying sound quality whereby measured sound levels are weighted to adjust for psychoacoustic sensit

23、ivity to frequency distribution and any discreet tones which may be present and then converted to a single number Sound Quality Indicator. 3.12 Sound Transmission Class (STC). A single-number rating derived from sound transmission loss data in accordance with the method described in ASTM Standard E4

24、13. Section 4. Test Requirements 4.1 Test Requirements. All standard sound power level ratings shall be determined by tests conducted in a reverberation room meeting the requirements of and qualified in accordance with AHRI Standard 220 except as noted within the body of this standard. Sound Power L

25、evels for the unit under test shall be determined per AHRI Standard 220. A Reference Sound Source (RSS) shall be used that meets the performance requirements of and is calibrated per AHRI Standard 250. 4.1.2 Sound tests for the determination of sound transmission loss shall be conducted in accordanc

26、e with ASTM Standards E90. ANSI/AHRI STANDARD 300-2008 3 4.1.3 Indoor/outdoor sound power ratings shall be determined in accordance with AHRI Standards 350 and 270, respectively. 4.2 Mounting of Equipment for Testing. 4.2.1 Indoor Sound Rating. The unit shall be mounted in accordance with the provis

27、ions of AHRI Standard 350. 4.2.2 Outdoor Sound Rating. The unit shall be mounted to have the minimum protrusion outdoors as recommended by the manufacturer. In no case shall the unit be recessed. 4.2.3 Sound Transmission Loss. The unit shall be mounted in accordance with the provisions of ASTM Stand

28、ard E90 with the unit not running and with the damper closed. This rating shall be calculated using the area of the outside dimensions of that portion of the wall sleeve that penetrates the outer face of the wall. 4.3 Electrical Characteristics. Tests shall be performed at the rated voltage(s), phas

29、e and frequency specified on the unit nameplate, and measured at the unit service connection. 4.4 Operation. All components required to produce the standard rating cooling capacity under the appropriate AHRI standard shall be operated while data is being taken. Standard Rating Conditions (cooling) f

30、or the appropriate standard shall be maintained. Section 5. Rating Requirements 5.1 Introduction. The sound ratings shall be applicable for the complete unit operating. The ratings shall be comprised of: Octave band Sound Power Levels, (Lw), dB (125 Hz to 8,000 Hz are required, 63 Hz is optional) Ov

31、erall A-Weighted Sound Power Level, (LwA), dB (100 Hz to 10,000 Hz are required, 50 Hz to 10,000 Hz are optional) STC and OITC ratings Optional Ratings may include: Sound quality indicator (SQI) per AHRI Standard 1140 (optional) One-third octave band Sound Power Levels, dB (optional) 5.2 Sound Trans

32、mission Loss. This standard employs three distinct characterizations for sound transmission loss: a. One-Third octave band sound transmission loss b. Sound Transmission Class (STC) c. Outdoor-Indoor Transmission Class (OITC) 5.3 Rating Requirements. Indoor sound ratings shall be determined in accord

33、ance with the provisions of AHRI Standard 350. Outdoor sound ratings shall be determined in accordance with the provisions of AHRI Standard 270. Sound Transmission Class (STC) shall be determined in accordance with ASTM Standard E413. Outdoor-Indoor Transmission Class (OITC) shall be determined in a

34、ccordance with ASTM Standard E1332 using test method E90. 5.4 Application Ratings. Application sound ratings for conditions other than standard shall be based upon tests conducted at those conditions. 5.5 Rating Tolerances. Any equipment selected at random and tested in any suitably qualified labora

35、tory in accordance with this standard, shall not have a sound rating higher than its published sound rating. It also, shall not have STC and OITC values less than its published Standard STC and OITC values. ANSI/AHRI STANDARD 300-2008 4 Section 6. Minimum Data Requirements for Published Ratings 6.1

36、Published Ratings. Published sound power ratings shall be for the unit with all components running that are necessary to produce the AHRI standard thermal rating. The sound power ratings shall include items 1 and 2 as listed below; items 3 and 4 are optional. 1. The octave band Sound Power Levels to

37、 the nearest decibel from 125 Hz to 8,000 Hz (63 Hz is optional). 2. The overall A-Weighted Sound Power Level to the nearest decibel covering the range of 100 Hz to 10,000 Hz (or optionally from 50 Hz to 10,000 Hz). 3. Optionally, the Sound Quality Indicator (SQI) may be published. The SQI shall be

38、rounded to the nearest 0.1. 4. Optionally, the one-third octave band Sound Power Levels to the nearest 0.1 decibel may be published. 6.1.1 Published Transmission Loss Ratings. Published transmission loss ratings shall include One-third octave band transmission loss data, STC, and OITC. 6.2 Standard

39、Sound Rating. When AHRI standard thermal rating conditions have been established for the equipment, a standard sound rating shall be published for the unit operating at those conditions. All claims to sound ratings within the scope of this standard shall include the statement “Rated in accordance wi

40、th AHRI Standard 300”. All claims to ratings outside the scope of this standard shall include the statement “Outside the scope of AHRI Standard 300”. Wherever application sound ratings are published or printed, they shall include a statement of the standard thermal rating conditions at which the rat

41、ings apply and be accompanied by the standard sound rating. Section 7. Marking and Nameplate Data 7.1 Marking and Nameplate Data. As a minimum, the nameplate shall display the manufacturers name, model designation, and electrical characteristics. Nameplate voltages for 60 Hertz systems shall include

42、 one or more of the equipment nameplate voltage ratings shown in Table 1 of AHRI Standard 110. Nameplate voltages for 50 Hertz systems shall include one or more of the utilization voltages shown in Table 1 of IEC Standard 60038. Section 8. Conformance Conditions 8.1 Conformance. While conformance wi

43、th this standard is voluntary, conformance shall not be claimed or implied for products or equipment within the standards Purpose (Section 1) and Scope (Section 2) unless such claims meet all of the requirements of the standard and all of the testing and rating requirements are measured and reported

44、 in complete compliance with the standard. Any product that has not met all the requirements of the standard cannot reference, state, or acknowledge the standard in any written, oral, or electronic communication. ANSI/AHRI STANDARD 300-2008 5 APPENDIX A. REFERENCES NORMATIVE A1 Listed here are all s

45、tandards, handbooks and other publications essential to the formation and implementation of the standards. All references in this appendix are considered as part of the standard. A1.1 ANSI Standard S1.11-2004, Specifications for Octave-Band and Fractional Octave-Band Analog and Digital Filters, 2004

46、, American National Standards Institute, 11 West 42nd Street, New York, NY 10036, U.S.A. A1.2 AHRI Standard 110-2002 (formerly ARI Standard 110-2002), Air-Conditioning and Refrigerating Equipment Nameplate Voltage, Air-Conditioning, Heating, and Refrigeration Institute, 2002, 2111 Wilson Boulevard,

47、Suite 500, Arlington, VA 22201, U.S.A. A1.3 AHRI Standard 220-2007 (formerly ARI Standard 220-2007), Reverberation Room Qualification and Testing Procedures for Determining Sound Power of HVAC Equipment, Air-Conditioning, Heating, and Refrigeration Institute, 2007, 2111 Wilson Boulevard, Suite 500,

48、Arlington, VA 22201, U.S.A. A1.4 AHRI Standard 250-2008 (formerly ARI Standard 250-2008), Performance and Calibration of Reference Sound Sources Equipment, Air-Conditioning, Heating, and Refrigeration Institute, 2008, 2111 Wilson Boulevard, Suite 500, Arlington, VA 22201, U.S.A. A1.5 AHRI Standard 2

49、70-2008 (formerly ARI Standard 270-2008), Sound Rating of Outdoor Unitary Equipment, Air-Conditioning, Heating, and Refrigeration Institute, 2009, 2111 Wilson Boulevard, Suite 500, Arlington, VA 22201, U.S.A. A1.6 AHRI Standard 310/380-2004 (formerly ARI Standard 310/380) (CSA-C744-04), Packaged Terminal Air-Conditioners and Heat Pumps, Air-Conditioning, Heating, and Refrigeration Institute, 2004, 2111 Wilson Boulevard, Suite 500, Arlington, VA 22203-1678, U.S.A. A1.7 AHRI Standard 350-2008 (formerly ARI Standard 350-2008), Sound Rating of Non-Ducted Indoor Air-Conditi