NAVY A-A-50502-1990 AIR CONDITIONER (UNITARY HEAT PUMP) AIR TO AIR (3 000 TO 300 000 BTU)《空对空(酉热泵)空调器(3 000到300 000 BTU)》.pdf

《NAVY A-A-50502-1990 AIR CONDITIONER (UNITARY HEAT PUMP) AIR TO AIR (3 000 TO 300 000 BTU)《空对空(酉热泵)空调器(3 000到300 000 BTU)》.pdf》由会员分享，可在线阅读，更多相关《NAVY A-A-50502-1990 AIR CONDITIONER (UNITARY HEAT PUMP) AIR TO AIR (3 000 TO 300 000 BTU)《空对空(酉热泵)空调器(3 000到300 000 BTU)》.pdf（7页珍藏版）》请在麦多课文档分享上搜索。

1、I COMMERCIAL ITEM DESCRIPTION l AIR CONDITIONER, (UNITARY HEAT PUMP), AIR TO AIR (3,000 TO 300,000 BTU) Ji The General Services Administration has authorized the use of this Commercial Item Description (CID) in preference to Type I, Type II, Class A, Size 1 and 2 of Military Specification MIL-H-2254

2、7C(YD). 1, Abstract. This Commercial Item Description (CID) covers air-to-air heat pumps for use as residential, commercial, or industrial units and are designed to perform the functions of either heating or cooling, circulating, filtering, cleaning, and dehumidifying an air stream. supplemented by

3、electrical resistance heaters. air conditioning type heat pumps covered by the Association of Home Appliance Manufacturers. Types and classes are as follows: The heating function may be This CID does not apply to room Type I - Heat pump, factory assembled refrigerant circuit or circuits Type II - He

4、at pump (split-system) employing remote outdoor section (packaged unit), separate from indoor section. Class 1 - Department of Energy (DOE) covered products (units with Class 2 - Non-DOE covered products (units with cooling capacity up to cooling capacity up to 65,000 British thermal units (Btu/hr).

5、 300,000 Btu/hr). 2. Salient characteristics. 2.1 Tvpe I heat pump. Unless otherwise specified (see 6.1), the type I heat pump will consist of a factory assembled sheet metal enclosure complete with supply air blower, compressor motor assembly, compressor motor contactor or starter (when required),

6、compressor motor overload protection devices, and crankcase heat. protective device, control devices, changeover valve(s) and check valve(s) (when The unit will be equipped with refrigerant and fan overload IBeneficial comments (recommendations, additions, deletions) and any pertinent1 Idata which m

7、ay be of use in improving this document should be addressed to: I ICommanding Officer (Code 156), Naval Construction Battalion Center, Port I IHueneme. CA 93043-5000. I FSC 4120 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited, Provided by IHSNot for ResaleNo reproduc

8、tion or networking permitted without license from IHS-,-,-A-A-50502 41 W 9999974 0059835 4 W A-A- 50502 required), refrigerant and oil charge, and a pressure relief means. Supplemental electrical heaters will be furnished with or in the unit. Temperature limiting devices will be furnished on heat pu

9、mps with supplemental electrical heaters. A room indoor thermostat will be provided. 2.2 Type II heat pump. Unless otherwise specified (see G,l), the type II heat pump will consist of a matched system consisting of separate outdoor and indoor sections connected with interconnecting refrigerant pipin

10、g, The outdoor section will consist of an outdoor coil(s), compressor(s) complete with protective devices and crankcase heat, changeover valve(s), check valve(s) when required, fan(s), cabinet, and all control devices and accessories as specified and required for proper operation of the outdoor port

11、ion of the system. section will consist of an indoor coil, supply air blower, cabinet, provision for mounting of filter(s), and all controls and accessories as specified and required for proper operation of the indoor portion of the system. will be provided with oil and a factory charge of refrigera

12、nt. Supplemental electrical heaters complete with temperature limiting devices and controls will be supplied as specified (see 6.1). An outdoor thermostat will be provided integral with or remote from the outdoor unit. A room thermostat will be provided. The indoor The system 2.3 Standards complianc

13、e. Where applicable, all heat pumps will conform to the following: a. b. c. Unit will conform to applicable Underwriters Laboratories (UL) standards. d. e. Insulation and adhesive will meet National Fire Protection Unit will be rated in accordance with Air Conditioning and Refrigeration Institute (A

14、I) Standards 240 or 340, and 270. Unit will be designed to conform to American National Standard Institute (ANSI) B 9.1. Roof curb will be designed to conform to National Roofing Contractors Association (NRAC) standards, Association (NFPA) 90A requirements for flame spread and smoke generation. 2.4

15、Design. between 115 degrees Fahrenheit (OF) and 55F in cooling mode and between 75OF and -20F in heating mode. of UL 559. otherwise specified (see G,l), air quantity and minimum external resistance will be as required in AR1 240 and AR1 340, as applicable. The heat pumps will be designed to operate

16、at ambient temperatures The heat pumps will conform to safety requirements The refrigerant will be ASHRAE refrigerant number R-22, Unless 2.5 Performance. 2 2.5.1 Heat Dump coolinp and heating capacity. cooling (sensible and latent) capacity will not be less than specified for the heating and coolin

17、g indoor and outdoor conditions (see 6.1). The minimum capacity for the supplemental heaters will be 80 percent of the heating load. The heat pump heating and Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-T A-A-50502 4L I 9999974 0059Lb b I A-A- 50

18、502 I 2.5.2 Sound ratinq. than an AR1 270 sound rating of 8.4 bels for units below 38,000 Btu/hr (11,100 watts (W), 8.6 bels for units between 38,000 Btu/hr and 65,000 Btu/hr (19,000 W), and 8.8 bels for units between 65,000 Btu/hr and 300,000 Btu/hr (87,930 W) in rated capacity. All outdoor unitary

19、 heat pumps will not be greater O 2.5.3 EnerpT performance requirement forall non-DOE rated heat pumps. The minimum Energy Efficiency Ratio (EER) for cooling will not be less than 8.0. The minimum Coefficient of Performance (COP) for high temperature heating at 47OF will not be less than 3.0. 2.5.4

20、Enerm performance requirement for DOE rated heat pumps (through 65.000 Btu./hr. single-phase-power units). The heat pumps will have the following minimum Seasonal Energy Efficiency Ratios (SEER), and minimum Heating Seasonal Performance Factor (HSPF) in accordance with AR1 240. 2.5.4.1 Current energ

21、y performance criteria. The following criteria will apply until the National Appliance Energy Conservation Act (NAECA) criteria take effect. Minimum Minimum Minimum SEER HSPF SEER + HSPF Type 1 (pkg) 8.8 5.8 15.5 Type II (split) 9.0 6.0 16.0* *Example: Either 9.0 SEER + 7.0 HSPF = 16.0 or 10.0 SEER

22、+ 6.0 HSPF - 16.0 SEER + HSPF = 16.0 would be acceptable. SEER + HSPF = 16.0 would not be acceptable if 10.2 SEER + 5.8 HSPF = 16.0. 2.5.4.2 NAECA criteria. 2.5.4.1 as of the NAECA effective dates. The following criteria will supersede the values in Minimum Minimum SEER HSPF Type I (PW 9.7 (1/1/93)

23、6.6 (1/1/93) Type II (split) 10. O (1/1/92) 6.8 (1/1/92) 2.6 Corrosion protection. Units fabricated from ferrous metals, will be treated for prevention of rust by a coating or paint system in conformance with standard commercial practice. installation within ten miles of the ocean or in otherwise co

24、rrosive environment, will be provided with a finish as specified in 2.6.1. When specified (see 6.1), units intended for 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50502 41 7999974 0059B17 B E A-A-50502 2.6.1 Outdoor units, The outdoor unit

25、s will be equipped with a factory coating or paint system which has been proven capable of withstanding a minimum 500 hours salt spray fog test at a dry bulb temperature of 97 if alternating current, the frequency and phases; if dual voltage, a diagram for changing voltage shall be shown. e. The ref

26、rigerant used, expressed in chemical or other descriptve terms and amount of refrigerant required. f. Factory test pressure. g. Location of the ventilating damper, when provided, and of the control. switch and thermostat, properly marked or distinctly indicated. 3. Regulatory requirements. The offer

27、or/contractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practical. 4. Qualitv assurance. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50502 4L I 9997974 0059839 L I A-A-50502 4.1 Cont

28、ractor certification. The contractor will certify and maintain objective quality evidence that the product offered meets this CID, shall be the manufacturers standard commercial product, and that the product conforms to the producers own drawings, specifications, standards, and quality assurance pra

29、ctices. conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract. The Government reserves the right to require proof of such 4.2 Metric Droducts. Products manufactured to metric dimensions will be considered on an equal basis with those

30、 manufactured using inch-pound units, provided they fall within the tolerances specified using conversion tables contained in the latest revision of Federal Standard No. 376, and all other requirements of this CID are met. If a product is manufactured to metric dimensions and those dimensions exceed

31、 the tolerances specified in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product, 5. Preservation, Dackaaina. packing, labeling:. and marking. Preservation, p

32、ackaging, packing, labeling, and marking shall be in accordance with the requirements of ASTM D 3951, unless otherwise specified in the contract or order. 6. Notes. 6.1 Ordering: data. Acquisition document should speciy the following: a. b. d. e. f. g* h. i. C. j. k. 1. m. n. Title, number, and date

33、 of this CID. Type and class of heat pump required (see i). Type I heat pump components, if different (see 2.1). Type II heat pump components, if different (see 2.2). Required air quantity and minimum external resistance if different (see 2.4). The required heat pump heating and cooling capacity (se

34、nsible and latent) (see 2.5.1). When special paint for corrosion prevention in coastal areas is required (see 2.6). When mechanical features to permit rooftop, floor, ceiling, or other mounting provisions are required (see 2.7). When outlet grilles are required (see 2.7.1). When coil coating or cath

35、odic protection to minimize galvanic corrosion for outdoor section coil is required (see 2.9). Electrical characteristics required (see 2.10). When supplemental electrical heating is required and type of electrical heater (see 2.11). Type of air filter required (see 2.13). When level of preservation

36、, packaging, packing, labeling, and marking is to be other than specified (see 5.). 6 e. I l l I I ai Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A- 50502 6.2 Sources of documents. Copies of military documents are available from: Standardizatio

37、n Documents Order Desk Building 4D 700 Robbins Avenue Philadelphia, PA 19111-5094 e 6.3 Sources for non-Government association documents. ANSI B 9.1 is available from the American National Standar-ds Institute, Inc., 1430 Broadway, New York, NY 10018. AR1 240, 270, and 340 are available from the Air

38、 Conditioning and Refrigeration Institute, 1501 Wilson Blvd., Suite 600, Arlington, VA 22209. UL 353, 559, 873, 984, and 1096 are available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062. ASHRAE 15 is available from the American Society of Heating, Refrigerating and A

39、ir Conditioning Engineers, Inc., 1791 Tullie Circle, N.E., Atlanta, GA 30329. AST14 B 117, ASTM D 1654, ASTM D 3951, ASTM F 873, and ASTM F 1040 are available from ASTM, 1916 Race Street, Philadelphia, PA 19103. NEMA DC 2 is available from the National Electrical Manufacturers Association, 2101 “L“

40、Street, N.W., Suite 300, Washington, DC 20037. NFPA 70 and.90A are available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. NRCA standards are available from the National Roofing Contractors Association, 6250 River Road, Sute 8030, Rosemont, IL 60018. MILITARY INTERESTS: Cus todian Navy - YD Review Activitv DIA - GS User Activity . Army - CE CIVIL AGENCY COORDINATING ACTIVITY: VA - VOC PREPARING ACTIVITY: Navy YD (Project 4120-1006)- 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-