1、 2008 Standard for Performance Rating of Unitary Air-Conditioning deletions are shown by strikethroughs) into the already published 2008 version of ANSI/AHRI Standard 210/240 with Addendum 1 to avoid confusion: The Integrated Energy Efficiency Ratio (IEER) methodology has been added to the standard
2、for water-cooled and evaporatively-cooled products. It is not intended for air-cooled products which should be rated with SEER. This includes: 1. The addition of 3.4.2 definition of IEER (page 2) 2. The addition of “and in multiples of 0.1 for IEER” to Section 6.1.2 (page 5). 3. The addition of Part
3、-Load IEER Conditions to Test Conditions to Table 12 (page 21) 4. The reinstatement of Note 2 in Table 12 (page 21) 5. New Section 6.2 Part Load Ratings (pages 22-26). This new Section 6.2 is duplicated from Section 6.2 from AHRI Standard 340/360-2007 with addenda 1 and 2. 6. The addition of “plus t
4、he IEER (where applicable),” to Section 6.4 (page 26) 7. The addition of “except IEER which shall not be less than 90% of Published Ratings.” to Section 6.5 (page 26) 8. The addition of “3. Integrated Energy Efficiency Ratio, IEER”, to Section 7.1.b (page 27) ANSI/AHRI STANDARD 210/240-2008 WITH ADD
5、ENDUM 1 Performance Rating of Unitary Air-Conditioning classifications; test requirements; 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
6、 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 factory-made Unitary Air-Conditioners and Air-Source Unitary
7、 Heat Pumps as defined in Section 3. 2.1.1 Energy Source. This standard applies only to electrically operated, vapor compression refrigeration systems. 2.2 Exclusions. 2.2.1 This standard does not apply to the rating and testing of individual assemblies, such as condensing units or coils, for separa
8、te use. 2.2.2 This standard does not apply to heat operated air-conditioning/heat pump equipment, or to packaged terminal air-conditioners/heat pumps, or to room air-conditioners/heat pumps. 2.2.3 This standard does not apply to Unitary Air-Conditioners as defined in AHRI Standard 340/360 with capac
9、ities of 65,000 Btu/h 19,000 W or greater. 2.2.4 This standard does not apply to Air-Source Unitary Heat Pumps as defined in AHRI Standard 340/360 with cooling capacities of 65,000 Btu/h 19,000 W or greater, or to water-source heat pumps, to ground water-source heat pumps, and to ground source close
10、d-loop heat pumps. 2.2.5 This standard does not include water heating heat pumps. 2.2.6 This standard does not apply to rating units equipped with desuperheater/water heating devices in operation. Section 3. Definitions All terms in this document shall follow the standard industry definitions in the
11、 current edition of ASHRAE Terminology of Heating, Ventilation, Air- Conditioning and Refrigeration, unless otherwise defined in this section. Note: Definitions for Small-duct, High-velocity Systems, Space Constrained Products, and Through-the-wall Air Conditioners and Heat Pumps are taken from Titl
12、e 10, Code of Federal Regulations, Part 430, Subparts 430.2 and 430.32 (c). See Appendix C for definitions that apply to the testing and calculation procedures required by Appendix C. ANSI/AHRI STANDARD 210/240-2008_ _ 2 3.1 Air-Source Unitary Heat Pump. One or more factory-made assemblies which nor
13、mally include an indoor conditioning coil(s), compressor(s), and outdoor coil(s), including means to provide a heating function. When such equipment is provided in more than one assembly, the separated assemblies shall be designed to be used together, and the requirements of rating outlined in the s
14、tandard are based upon the use of matched assemblies. 3.1.1 Functions. They shall provide the function of air heating with controlled temperature, and may include the functions of air-cooling, air-circulating, air-cleaning, dehumidifying or humidifying. 3.2 Degradation Coefficient (CD). The measure
15、of the efficiency loss due to the cycling of the units as determined in Appendices C and D. 3.3 Design Heating Requirement (DHR). This is the amount of heating required to maintain a given indoor temperature at a particular outdoor design temperature. 3.4 Energy Efficiency Ratio (EER). A ratio of th
16、e cooling capacity in Btu/h to the power input value in watts at any given set of Rating Conditions expressed in Btu/(Wh). 3.4.1 Standard Energy Efficiency Ratio. A ratio of the capacity to power input value obtained at Standard Rating Conditions. 3.4.2 Integrated Energy Efficiency Ratio (IEER). A s
17、ingle number cooling part-load efficiency figure of merit calculated per the method described in Section 6.2.2 expressed in Btu/(Wh). 3.5 Heating Seasonal Performance Factor (HSPF). The total space heating required during the space heating season, expressed in Btus, divided by the total electrical e
18、nergy consumed by the heat pump system during the same season, expressed in watt-hours. 3.6 Integrated Part-Load Value (IPLV). A single number part-load efficiency figure of merit calculated per the method described in this standard. 3.7 Published Rating. A statement of the assigned values of those
19、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 capacity and type (identification) produced by the same manufacturer. As used herein, the term Published Rating includes the rating of al
20、l performance characteristics shown on the unit or published in specifications, advertising, or other literature controlled by the manufacturer, at stated Rating Conditions. 3.7.1 Application Rating. A rating based on tests performed at Application Rating Conditions (other than Standard Rating Condi
21、tions). 3.7.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.8 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. 3.8.1 Standard Rating Conditions. Rating
22、Conditions used as the basis of comparison for performance characteristics. 3.9 Seasonal Energy Efficiency Ratio (SEER). The total heat removed from the conditioned space during the annual cooling season, expressed in Btus, divided by the total electrical energy consumed by the air conditioner or he
23、at pump during the same season, expressed in watt-hours. 3.10 “Shall“ or “Should“. “Shall“ or “should“ shall be interpreted as follows: 3.10.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.10.2 Should.
24、 “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. _ _ ANSI/AHRI STANDARD 210/240-2008 3 3.11 Small-duct, High-velocity System. A heating and/or cooling product that contains a blower and indoor coil combination that is designed for, and produc
25、es, at least 1.2 in H2O 300 Pa of external static pressure when operated at the certified air volume rate of 220-350 cfm 0.104 0.165 m3/s per rated ton 12,000 Btu/h of cooling. When applied in the field, small-duct products use high-velocity room outlets (i.e., generally greater than 1,000 fpm 5 m/s
26、) having less than 6.0 in23,900 mm2 of free area. 3.12 Space Constrained Product. A central air conditioner or heat pump: a. that has rated cooling capacities no greater than 30,000 Btu/h 8,800 W; b. that has an outdoor or indoor unit having at least two overall exterior dimensions or an overall dis
27、placement that: 1. is substantially smaller than those of other units that are: a. currently usually installed in site built single family homes; and b. of a similar cooling, and, if a heat pump, heating capacity; and 2. if increased, would certainly result in a considerable increase in the usual co
28、st of installation or would certainly result in a significant loss in the utility of the product to the consumer; and c. of a product type that was available for purchase in the United States as of December 1, 2000. 3.13 Standard Air. Air weighing 0.075 lb/ft31.2 kg/m3 which approximates dry air at
29、70F 21C and at a barometric pressure of 29.92 in Hg 101.3 kPa. 3.14 Tested Combination for Multiple-split air conditioners and heat pumps. 3.14.1 Tested combination means a multi-split system with multiple indoor coils having the following features: 3.14.2 The basic model of a system used as a teste
30、d combination shall consist of one outdoor unit, with one or more compressors, that is matched with between 2 and 5 indoor units; for multi-split systems, each of these indoor units shall be designed for individual operation. 3.14.3 The indoor units shall: 3.14.3.1 Represent the highest sales model
31、family, or another indoor model family if the highest sales model family does not provide sufficient capacity (see 3.14.3.2); 3.14.3.2 Together, have a nominal cooling capacity that is between 95% and 105% of the nominal cooling capacity of the outdoor unit; 3.14.3.3 Not, individually, have a capaci
32、ty that is greater than 50% of the nominal capacity of the outdoor unit; 3.14.3.4 Operate at fan speeds that are consistent with the manufacturers specifications; and 3.14.3.5 All be subject to the same minimum external static pressure requirement (i.e., 0 in H2O 0 Pa) for non-ducted, see Table 2 in
33、 Appendix M to Subpart B of this part for ducted indoor units) while being configurable to produce the same static pressure at the exit of each outlet plenum when manifolded as per section 2.4.1 of Appendix M to Subpart B of Part 430 Uniform Test Method for Measuring the Energy Consumption of Centra
34、l Air Conditioners and Heat Pumps. 3.15 Through-the-wall Air Conditioner and Heat Pump. A central air conditioner or heat pump that is designed to be installed totally or partially within a fixed-size opening in an exterior wall, and: a. is manufactured prior to January 23, 2010; b. is not weatheriz
35、ed; c. is clearly and permanently marked for installation only through an exterior wall; d. has a rated cooling capacity no greater than 30,000 Btu/h 8,800 W; e. exchanges all of its outdoor air across a single surface of the equipment cabinet; and f. has a combined outdoor air exchange area of less
36、 than 800 in20.516 m2 (split systems) or less than 1,210 in2 0.7804 m2 (single packaged systems) as measured on the surface described in 3.14.e. ANSI/AHRI STANDARD 210/240-2008_ _ 4 3.16 Two-capacity (or Two-stage) Compressor. An air conditioner or heat pump that has one of the following: a. A two-s
37、peed compressor, b. Two compressors where only one compressor ever operates at a time, c. Two compressors where one compressor (Compressor #1) operates at low loads and both compressors (Compressors #1 and #2) operate at high loads but Compressor #2 never operates alone, or d. A compressor that is c
38、apable of cylinder or scroll unloading. For such systems, low capacity means: a. Operating at low compressor speed, b. Operating the lower capacity compressor, c. Operating Compressor #1, or d. Operating with the compressor unloading (e.g., operating one piston of a two-piston reciprocating compress
39、or, using a fixed fractional volume of the full scroll, etc.). For such systems, high capacity means: a. Operating at high compressor speed, b. Operating the higher capacity compressor, c. Operating Compressors #1 and #2, or d. Operating with the compressor loaded (e.g., operating both pistons of a
40、two-piston reciprocating compressor, using the full volume of the scroll). 3.17 Unitary Air-Conditioner. One or more factory-made assemblies which normally include an evaporator or cooling coil(s), compressor(s), and condenser(s). Where such equipment is provided in more than one assembly, the separ
41、ated assemblies are to be designed to be used together, and the requirements of rating outlined in this standard are based upon the use of these assemblies in operation together. 3.17.1 Functions. Either alone or in combination with a heating plant, the functions are to provide air-circulation, air
42、cleaning, cooling with controlled temperature and dehumidification, and may optionally include the function of heating and/or humidifying. Section 4. Classifications Equipment covered within the scope of this standard shall be classified as shown in Tables 1 and 2. Section 5. Test Requirements All S
43、tandard Ratings shall be verified by tests conducted in accordance with the test methods and procedures as described in this standard and its appendices. Air-cooled units shall be tested in accordance with ANSI/ASHRAE Standard 37 and with Appendices C and D. Water-cooled and evaporatively-cooled uni
44、ts shall be tested in accordance with ANSI/ASHRAE Standard 37. Section 6. Rating Requirements 6.1 Standard Ratings. Standard Ratings shall be established at the Standard Rating Conditions specified in 6.1.3. Air-cooled units shall be rated at conditions specified in Tables 3-10. Water-cooled and eva
45、poratively-cooled units shall be rated at conditions specified in Table 12. Standard Ratings relating to cooling or heating capacities shall be net values, including the effects of circulating-fan heat, but not including supplementary heat. Power input shall be the total power input to the compresso
46、r(s) and fan(s), plus controls and other items required as part of the system for normal operation. Standard Ratings of units which do not have indoor air-circulating fans furnished as part of the model, i.e., split systems with indoor coil alone, shall be established by subtracting from the total c
47、ooling capacity 1,250 Btu/h per 1,000 cfm 775 W/m3/s, and by adding the same _ _ ANSI/AHRI STANDARD 210/240-2008 5 amount to the heating capacity. Total power input for both heating and cooling shall be increased by 365 W per 1,000 cfm 226 W/m3/s of indoor air circulated. Standard Ratings of water-c
48、ooled units shall include a total allowance for cooling tower fan motor and circulating water pump motor power inputs to be added in the amount of 10.0 W per 1,000 Btu/h 34.1 W per 1,000 W cooling capacity. 6.1.1 Values of Standard Capacity Ratings. These ratings shall be expressed only in terms of
49、Btu/h W as shown: Capacity Ratings, Btu/h W Multiples, Btu/h W 34.8%, EWT = 0.460 % LOAD + 39 For % Load 34.8%, EWT = 55.0 full load flow For % Load 34.8% , EWT = 0.256 % LOAD + 3.8 For % Load 34.8%, EWT = 12.8 full load flow Condenser (Evaporatively-Cooled) Entering Wet-Bulb Temperature (EWB) Entering Dry-Bulb Temperature (EDB) For % Load 36.6%, EWB = 0.35 % Load + 40 For % Load 36.6%, EWB = 52.8 For % L
