1、 2008 Standard for Performance Rating of Room Fan-Coils ANSI/AHRI Standard 440 (Formerly ARI Standard 440) 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 Trademark Office AHRI CERTIFICATION
2、PROGRAM PROVISIONS Scope of the Certification Program The certification program includes Room Fan-Coils as defined in Section 3, having air-delivery capacities of 1500 cfm 0.7080 m3/s or less. Room Fan-Coils employing Volatile Refrigerant Coils or steam coils, central-station air-handling units as d
3、efined in AHRI Standard 430, and unit ventilators as defined in ARI Standard 840 are not included. Certified Ratings The following certification program ratings shall be verified by test at the Standard Rating Conditions for Cooling Capacity (Section 6.3.1), and for power input (Section 6.3.4): 1. T
4、otal Cooling Capacity, Btu/h W 2. Sensible Cooling Capacity, Btu/h W 3. Power Input, W W Conformance to the requirements of the insulation efficiency test and the low voltage test (Section 8) shall also be verified by test. Note: This standard supersedes ARI Standard 440-2005. IMPORTANT SAFETY DISCL
5、AIMER 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 designed, constructed, assembled, instal
6、led 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 industry practices. AHRI does not certify o
7、r guarantee that any tests conducted under its standards/guidelines will be non-hazardous or free from risk. TABLE OF CONTENTS SECTION PAGE Section 1. Purpose .1 Section 2. Scope 1 Section 3. Definitions 1 Section 4. Classifications .3 Section 5. Test Requirements 3 Section 6. Rating Requirements 3
8、Section 7. Minimum Data Requirements for Published Ratings .5 Section 8. Operating Requirements .6 Section 9. Marking and Nameplate Data .6 Section 10. Conformance Conditions 6 TABLES Table 1. Heating Rating Conditions .4 APPENDICES Appendix A. References - Normative 7 Appendix B. References - Infor
9、mative 7 ANSI/AHRI STANDARD 440-2008 1 PERFORMANCE RATING OF ROOM FAN-COILS Section 1. Purpose 1.1 Purpose. The purpose of this standard is to provide for Room Fan-Coils: definitions; classifications; test requirements; rating requirements; minimum data requirements for Published Ratings; operating
10、requirements; marking and nameplate 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 techn
11、ology advances. Section 2. Scope 2.1 Scope. This standard applies to Room Fan-Coils, defined in Section 3, having air-delivery capacities of 1500 cfm 0.7080 m3/s or less. 2.2 Exclusions. 2.2.1 This standard does not apply to central-station air-handling units as defined in ANSI/AHRI Standard 430. 2.
12、2.2. This standard does not apply to unit ventilator units as defined in AHRI Standard 840. 2.2.3 This standard does not apply to Room Fan-Coils employing: a. Volatile Refrigerant Coils b. Steam coils Section 3. Definitions All terms in this document shall follow the standard industry definitions in
13、 the current edition of ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Refrigeration unless otherwise defined in this section. 3.1 Capacity. 3.1.1 Cooling Capacity. The capacity associated with the change in air enthalpy which includes both the Latent and Sensible Capacities expres
14、sed in Btu/hW. 3.1.1.1 Latent Capacity. Capacity associated with a change in humidity ratio. 3.1.1.2 Sensible Capacity. Capacity associated with a change in dry-bulb temperature. 3.1.2 Heating Capacity. The capacity associated with the change in dry-bulb temperature expressed in Btu/hW. 3.2 Fan. A d
15、evice for moving air which utilizes a power-driven rotating impeller. 3.3 Forced-Air Circulation. Air circulation caused by a difference in pressure produced by a fan. 3.4 Grille. Lattice or grating covering the delivery or intake opening of an air passage. 3.5 Non-Volatile Refrigerant Coil. A coil
16、in which the cooling fluid (usually water) remains in the liquid state during its passage through the coil. ANSI/AHRI STANDARD 440-2008_ 2 3.6 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit may be chosen to f
17、it its application. These values apply to all units of like nominal size and type (identification) produced by the same manufacturer. The term Published Rating includes the rating of all performance characteristics shown on the unit or published in specifications, advertising or other literature con
18、trolled by the manufacturer, at stated Rating Conditions. 3.6.1 Application Rating. A rating based on tests performed at application Rating Conditions (other than Standard Rating Conditions). 3.6.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.7 Rating Condition
19、s. Any set of operating conditions under which a single level of performance results and which causes only that level of performance to occur. 3.7.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.8 Room Fan-Coil (cooling, heating, or
20、cooling and heating). A factory-made assembly which provides the functions of cooling, heating, or cooling and heating, but which does not include the source of cooling or heating. This device is designed for free-delivery of air into a room, but may be applied with minimal duct work having a static
21、 resistance generally not exceeding 0.25 in H2O 0.062 kPa. These devices may be designed for furred-in application, or with an enclosure for application within the conditioned space. 3.8.1 Free Delivery Units. Free Delivery Units are Room Fan-Coils furnished with both integral filters and grilles on
22、 the unit. 3.8.2 Furred-in Units. Furred-in Units are Room Fan-Coils intended to be installed above a ceiling, within a side wall, or with a discharge grille. It may or may not have provisions for a filter. 3.9 Room Fan-Coil Motors. 3.9.1 Shaded Pole Motor. Single phase AC motor with offset start wi
23、nding and no capacitor. 3.9.2 PSC Motor. Single phase AC motor with offset start winding with capacitor. 3.9.3 EC Motor. AC electrically commutated permanent magnet DC motor. 3.10 “Shall“ or “Should,“ “Shall“ or “should“ shall be interpreted as follows: 3.10.1 Shall. Where “shall“ or “shall not“ is
24、used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.10.2 Should. “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. 3.11 Standard Air. Air weighing 0.075 lb/ft31.2 kg/m3 which approximates dr
25、y air at 70F 21C and at a barometric pressure of 29.92 in Hg 101.3 kPa. 3.12 Volatile Refrigerant Coil. A coil in which the cooling fluid evaporates during its passage through the coil. ANSI/AHRI STANDARD 440-2008 3 Section 4. Classifications 4.1 Methods of Classification. Room Fan-Coils shall be cl
26、assified according to the following: 4.1.1 By mounting arrangement (exposed or recessed; floor, wall or ceiling mounted) 1. Vertical 2. Horizontal 4.1.2 By water temperature rise 1. Normal rise 2. High rise Section 5. Test Requirements 5.1 Test Requirements. All published ratings shall be verified b
27、y tests conducted in accordance with the provisions set forth in ASHRAE Standard 79 and 5.1.1 through 5.1.3. 5.1.1 Free Delivery Units. Free Delivery Units furnished with filters and grilles shall be tested with an external static pressure of 0.0 in. H2O 0.0 kPa. 5.1.2 Furred-in Units. Furred-in fan
28、-coils shall be tested at an external static pressure of 0.05 in H2O 0.01 kPa, and without filters and grilles. 5.1.3 High Static Units. The standard rating test shall be conducted with an external static pressure of 0.20 in H2O 0.050 kPa. Section 6. Rating Requirements 6.1 Published Ratings. Publis
29、hed Ratings of Room Fan-Coils shall include the information specified in 7.2 and shall include or be accompanied by the Standard Rating, properly identified as such. Application ratings shall clearly define the pertinent conditions. 6.2 Standard Ratings. Standard Ratings shall be established at the
30、Standard Rating Conditions specified in 6.3. All Standard ratings shall be verified by tests conducted in accordance with Section 5. In these ratings, capacity shall be expressed in terms of Btu/h W (in multiples of 100 Btu/h 30 W), airflow rate shall be expressed in terms of cfm m3/s (in multiples
31、of 10 cfm 0.0047 m3/s), power input shall be expressed in W W (in multiples of 1 W 1 W), and water pressure drop shall be expressed in ft H2O kPa (in multiples of 0.1 ft H2O 0.3 kPa). 6.3 Standard Rating Conditions. Standard Ratings shall be determined by tests, using the methods of testing set fort
32、h in Section 5 and performed under the following: 6.3.1 Cooling Rating Conditions. a. Entering temperatures of air to be conditioned: 80.0F 26.7C dry-bulb, 67.0F 19.4C wet-bulb b. Entering water temperature (all units): 45F 7.2C c. Leaving water temperature: 55.0F 12.8C for normal temperature rise u
33、nits and 60.0F 15.6C for high temperature rise units d. Water flow rate determined using the standard rating water temperature conditions specified above, gpm L/s e. 0 in H2O 0 Pa static pressure difference between air inlet and outlet of the Room Fan-Coil (except for equipment covered in 5.1.2 and
34、5.1.3) f. Highest fan-speed setting ANSI/AHRI STANDARD 440-2008_ 4 g. Outside air dampers closed 6.3.2 Heating Rating Conditions. Standard ratings shall be determined by tests, using the methods of testing set forth in Section 5 and performed in accordance with Table 1 and the following Standard Rat
35、ing Conditions: a. Highest fan-speed setting b. Outside air dampers closed Table 1. Heating Rating Conditions Coil for Heating & Cooling Coil for Heating Only Entering Air Dry-bulb Temperature, F C 70.0 21.1 70.0 21.1 Entering Air Wet-bulb Temperature, F C 60.0 15.6 Max 60.0 15.6 Max Entering Water
36、Temperature, F C 140 60.0 180 82.2, 140* 60.0* Water Flow Rate, gpm L/s Flow rate from cooling rating test Airflow Rate, cfm m3/s 0 in H2O 0 Pa static pressure difference between inlet and outlet of the Room Fan-Coil except for cooling equipment covered in 5.1.2 and 5.1.3 0 in H2O 0 Pa static pressu
37、re difference between inlet and outlet of the Room Fan-Coil at the static pressure specified under 5.1.2 and 5.1.3 Water Temperature Difference, F C 40.0 22.2 * Optional Flow rate at 40.0F 22.2C Water Temperature Difference (rating not required) Water Temperature Difference at rated flow (rating not
38、 required) 6.3.3 Electrical Conditions. Standard rating tests shall be performed at the nameplate rated voltage(s) and frequency. For units with dual nameplate voltage ratings, standard rating tests shall be performed at both voltages, or at the lower of the two voltages, if only a single Standard R
39、ating is to be published. 6.3.4 Airflow and Electric Power Input Rating Conditions. Standard airflow and electric power input ratings shall be determined by tests using the methods of testing set forth in Section 5 and performed under the following Standard Rating Conditions: a. Entering air dry-bul
40、b temperature: 80.0F 26.7C b. No water flow through coil c. 0 in H2O 0 Pa static pressure difference between air inlet and outlet of Room Fan-Coils (except for equipment covered in 5.1.2 and 5.1.3) d. High fan-speed setting 6.4 Application Rating Conditions. Application ratings shall permit selectio
41、n of units for at least a range of conditions commonly encountered, and shall be based on corresponding ranges of the following selection parameters: a. Entering air dry-bulb temperature,F C b. Entering air wet-bulb temperature,F C (cooling only) c. Entering water temperature,F C d. Water temperatur
42、e difference, F C or water flow rate, gpm L/s e. Fan motor speed control setting ANSI/AHRI STANDARD 440-2008 5 6.5 Similar Models. Where more than one model of a particular size of Room Fan-Coil is produced having identical blowers and coils, similar motor speeds, and identical arrangement of parts
43、relative to each other, a representative sample shall be tested by the manufacturer to obtain ratings for these units. Such a representative sample shall be the standard model of this particular size having the lowest air delivery. 6.6 Tolerances. The Standard Rating shall be such that any Room Fan-
44、Coil selected at random and tested in accordance with this standard has an airflow rate, total Cooling Capacity, Heating Capacity and sensible Cooling Capacity not less than 95 percent of the Standard Ratings, an electrical power input not more than 110 percent of the Standard Ratings, and a water p
45、ressure drop not more than 110 percent of the Standard Rating or Standard Rating + 1 ft H2O 3 kPa, whichever is greater. Section 7. Minimum Data Requirements for Published Ratings 7.1 Minimum Data Requirements for Published Ratings. As a minimum, Published Ratings shall include all Standard Ratings.
46、 All claims to ratings within the scope of this standard shall include the statement “Rated in accordance with AHRI Standard 440”. All claims to ratings outside the scope of this standard shall include the statement “Outside the scope of AHRI Standard 440”. Wherever application ratings are published
47、 or printed, they shall include or be accompanied by the Standard Rating clearly designated as such, including a statement of the conditions at which the ratings apply. 7.2 Content of Published Ratings. Published Ratings shall consist of the following information: a. Airflow rate at dry-coil conditi
48、ons with an entering air dry-bulb temperature of 80.0F 26.7C, cfm m3/s b. Electric power input, (measured at conditions in 7.2a), W W c. Capacity, Btu/h W 1. Cooling Total Cooling Sensible 2. Heating d. Fluid Flow rate, gpm L/s e. Fluid pressure drop through the coil, ft H2O kPa 7.3 Published Rating
49、 Data. Published Ratings shall include, or be accompanied by, the following data: a. Nameplate Electrical data 1. Voltage, volts V 2. Full-load current, amperes A b. Minimum grille free areas, in2mm2 1. Inlet 2. Outlet c. Filter data as supplied or recommended by manufacturer 1. Type 2. Size, in x in
