1、 2008 Standard for 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
2、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 factory-made Unitary Air-Conditioners and Air-Sou
3、rce Unitary 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,
4、 for separate 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 ARI Standard 340/360
5、with capacities 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 ARI 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 sou
6、rce closed-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 definitio
7、ns in the 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
8、from Title 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. Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not
9、for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 210/240-2008_ 2 3.1 Air-Source Unitary Heat Pump. One or more factory-made assemblies which normally include an indoor conditioning coil(s), compressor(s), and outdoor coil(s), including means to provide a he
10、ating 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 standard are based upon the use of matched assemblies. 3.1.1 Functions. They shall provide the function of air hea
11、ting 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 of the efficiency loss due to the cycling of the units as determined in Appendices C and D. 3.3 Design Heating Re
12、quirement (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 the cooling capacity in Btu/h to the power input value in watts at any given set of Rating Conditions expressed in
13、Btu/(Wh). 3.4.1 Standard Energy Efficiency Ratio. A ratio of the capacity to power input value obtained at Standard Rating Conditions. 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
14、energy 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
15、 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 a
16、ll 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 Cond
17、itions). 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
18、 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 h
19、eat 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
20、. “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ARI S
21、TANDARD 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 produces, 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
22、.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) having less than 6.0 in2 3,900 mm2 of free area. 3.12 Space Constrained Product. A central air conditioner or heat pump:
23、 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 displacement that: 1. is substantially smaller than those of other units that are: a. currently usually installed in site bu
24、ilt 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 cost of installation or would certainly result in a significant loss in the utility of the product to the consumer; and c.
25、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/ft3 1.2 kg/m3 which approximates dry air at 70F 21C and at a barometric pressure of 29.92 in Hg 101.3 kPa. 3.14 Tested Combination for Multiple-split air conditione
26、rs 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 tested combination shall consist of one outdoor unit, with one or more compressors, that is matched with between 2 and 5 indo
27、or 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 family, or another indoor model family if the highest sales model family does not provide sufficient capacity (see 3.14.
28、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 capacity that is greater than 50% of the nominal capacity of the outdoor unit; 3.14.3.4 Operate at fan speeds that are consist
29、ent 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 Appendix M to Subpart B of this part for ducted indoor units) while being configurable to produce the same static press
30、ure 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 Central Air Conditioners and Heat Pumps. 3.15 Through-the-wall Air Conditioner and Heat Pump. A central air conditioner or hea
31、t 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 weatherized; c. is clearly and permanently marked for installation only through an exterior wall; d. has a rated cooling capacity
32、 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 than 800 in2 0.516 m2 (split systems) or less than 1,210 in2 0.7804 m2 (single packaged systems) as measured on the sur
33、face described in 3.14.e. Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 210/240-2008_ 4 3.16 Two-capacity (or Two-stage) Compressor. An air conditi
34、oner or heat pump that has one of the following: a. A two-speed 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 Compr
35、essor #2 never operates alone, or d. A compressor that is capable 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.,
36、operating one piston of a two-piston reciprocating compressor, 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 wit
37、h the compressor loaded (e.g., operating both pistons of a 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
38、 equipment is provided in more than one assembly, the separated 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 heatin
39、g plant, the functions are to provide air-circulation, air 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
40、shown in Tables 1 and 2. Section 5. Test Requirements All Standard 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 Ap
41、pendices C and D. Water-cooled and evaporative-cooled units 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
42、conditions specified in Tables 3-10. Water-cooled and evaporative-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. Powe
43、r input shall be the total power input to the compressor(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 alon
44、e, shall be established by subtracting from the total cooling capacity 1,250 Btu/h per 1,000 cfm 775 W/m3/s, and by adding the same Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without lic
45、ense from IHS-,-,-_ARI 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-cooled units shall include a total allowance for cooling tower fan mo
46、tor 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 Btu/h W as shown: Capacity Ratings, Btu/h W Multiples, Btu/h W 20,00
47、0 5,900 100 30 20,000 and 38,000 5,900 up to 11,000 200 60 38,000 and 65,000 11,000 up to 19,000 500 150 6.1.2 Values of Measures of Energy Efficiency. Standard measures of energy efficiency, whenever published, shall be expressed in multiples of the nearest 0.05 Btu/(Wh) for EER, SEER and HSPF and
48、in multiples of 0.1 for IPLV. 6.1.3 Standard Rating Tests. Tables 3 - 10 and 12 indicate the test and test conditions which are required to determine values of standard capacity ratings and values of measures of energy efficiency. Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license
