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1、May 22, 20071SUBJECT 1626A OUTLINE OF INVESTIGATIONFORFIRE TESTING OF RESIDENTIAL SPRINKLERS FOR USE WITH SMOOTH, FLAT, SLOPED CEILINGS HAVING PITCHES NOT EXCEEDING 8/12Issue Number: 1May 22, 2007Summary of TopicsThis is the First Issue of the Subject 1626A Outline of Investigation for Fire Testing
2、of Residential Sprinklers for Use With Smooth, Flat, Sloped Ceilings Having Pitches not Exceeding 8/12.The UL Foreword is no longer located within the UL Standard. For information concerning the use and application of the requirements contained in this Standard, the current version of the UL Forewor
3、d is located on ULStandardsInfoNet at: COPYRIGHT 2007 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL2SUBJECT 1626AMAY 22, 2007No Text on This PageMAY 22, 2007SUBJECT 1626A3CONTENTSINTRODUCTION1 Scope . .42 Comp
4、onents . .43 Units of Measurement . .54 Undated References . .55 Fire Test . .55.1 General . .55.2 Test Arrangement . .65.3 Test method . .8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL4SUBJECT 1626AMAY 22, 2007INTRODUCTION1 Scope1.1 These
5、 requirements cover the fire testing of residential sprinklers for use with smooth, flat, sloped ceilings having pitches not exceeding 8/12 for installation in accordance with the Standards for Installation of Sprinklers Sprinkler Systems in One-and Two-Family Dwellings and Manufactured Homes, NFPA
6、13D; Installation of Sprinkler Systems in Residential Occupancies up to and Including Four Stories in Height, NFPA 13R; and and Installation of Sprinklers, NFPA 13.1.1 effective May 22, 20091.2 Residential sprinklers covered herein are also required to comply with the fire and other applicable requi
7、rements in the Standard for Residential Sprinklers for Fire-Protection Service, UL 1626.1.2 effective May 22, 20091.3 The requirements contained herein are not intended to restrict the application of representative fire and other tests for special sprinklers, as referenced in NFPA 13, that are inten
8、ded to provide protection for specific fire hazards.1.3 effective May 22, 20091.4 These fire test methods and requirements contained herein are based upon the following installation conditions:a) A maximum distance from the floor to the ceiling peak of 24 ft (7.3 m).b) A maximum of two sprinklers ar
9、e installed within 3 ft (0.9 m). vertically of the peak.c) For sidewall sprinklers discharging across the slope, sprinklers are installed on one side of the room only.d) Installation is for smooth, flat ceilings only that do not extend into or serve as a ceiling for an upper level floor in the struc
10、ture.1.4 effective May 22, 20092 Components2.1 Except as indicated in 2.2, a component of a product covered by this Outline shall comply with the requirements for that component.2.1 effective May 22, 20092.2 A component is not required to comply with a specific requirement that:a) Involves a feature
11、 or characteristics not needed in the application of the component in the product covered by this Outline; orb) Is superseded by a requirement in this Outline.2.2 effective May 22, 2009UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULMAY 22, 2
12、007SUBJECT 1626A52.3 A component shall be used in accordance with its rating for the intended conditions of use.2.3 effective May 22, 20092.4 Specific components are accepted as being incomplete in construction features or restricted in performance capabilities. Such components are intended for use
13、only under limited conditions, such as temperatures not exceeding specified limits, and shall be used only under those specific conditions for which they have been investigated.2.4 effective May 22, 20093 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parent
14、heses are explanatory or approximate information.3.1 effective May 22, 20094 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this Outline shall be interpreted as referring to the latest edition of that code or standard.4.1 effective May 22, 20095 Fi
15、re Test5.1 General5.1.1 When fire tested as described in 5.1.2 5.3.5, a residential sprinkler shall limit temperatures as specified in 5.1.1 (a) (d) when tested at each rated spacing referenced in the installation instructions. Additionally, a maximum of two residential sprinklers shall operate with
16、in the test room and no sprinkler shall operate in the doorways. The sprinklers shall limit temperatures as followsa) The maximum temperature 3 inches (76 mm) below the ceiling at either location as illustrated in Figures 5.1, 5.4, 5.7, or 5.10 shall not exceed 600 F (316 C).b) The maximum temperatu
17、re 5-1/4 feet (1.6 m) above the floor shall not exceed 200 F (93 C).c) The temperature at the location described in (b) shall not exceed 130 F (54 C) for more than any continuous 2-minute period.d) The maximum ceiling material temperature 1/4 inch (6.4 mm) behind the finished ceiling surface shall n
18、ot exceed 500 F (260 C).See Figure 5.1 (pendent, upright, flush, recessed pendent, and concealed pendent sprinklers), or Figures5.4, 5.7, or 5.10 (sidewall sprinklers) for temperature measuring locations.5.1.1 effective May 22, 2009UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR D
19、ISTRIBUTION WITHOUT PERMISSION FROM UL6SUBJECT 1626AMAY 22, 20075.1.2 Residential sprinklers in each temperature rating are to be subjected to the tests specified in 5.2.1 5.3.5.5.1.2 effective May 22, 20095.2 Test Arrangement5.2.1 General5.2.1.1 Pendent, upright, flush, recessed pendent, and concea
20、led pendent sprinklers are to be subjected to both high and low corner fire test arrangements for the applicable rated spacings as illustrated in Figures 5.1 to 5.3. Sidewall sprinklers discharging across the slope are to be subjected to both high and low corner fire test arrangements for the applic
21、able rated spacings as described in Figures 5.4 to 5.6. Sidewall sprinklers discharging down the slope are to be subjected to both high and low corner fire test arrangements for the applicable rated spacings as described in either Figures 5.7 to 5.9, or 5.10 to 5.12.5.2.1.1 effective May 22, 20095.2
22、.2 Test room5.2.2.1 The test room dimensions for pendent, upright, flush, recessed pendent, and concealed pendent sprinklers are to be as specified in Figures 5.1 to 5.3. The test room dimensions for sidewall sprinklers discharging across the slope are to be as specified in Figures 5.4 to 5.6. The t
23、est room dimensions for sidewall sprinklers discharging down the slope are to be as specified in Figures 5.10 to 5.12 for a reduced scale test. For sidewall sprinklers discharging down the slope, the manufacturer shall be permitted to have the option to conduct the test in a standard scale test room
24、 as specified in Figures 5.7 to 5.9.5.2.2.1 effective May 22, 20095.2.2.2 The test room ceiling is to be covered with acoustical panels or gypsum board attached to furring strips. Acoustical panels used in the 4 by 4 foot (1.2 by 1.2 m) area directly over the fire source are to measure 2 by 4 foot (
25、0.6 by 1.2 m), be 1/2 inch (12.7 mm) thick, have a density of 13.5 1.5 lb/ft3 (21624 kg/m3), and have a maximum flame spread index of 25 when tested in accordance with the Standard for Test for Surface Burning Characteristics of Building Materials, UL 723. For each test, new acoustical panels in the
26、 4 by 4 foot (1.2 by 1.2 m) area directly over the fire source are to be installed.5.2.2.2 effective May 22, 20095.2.2.3 The test room is to have provisions for ventilation through two door openings on opposite test room walls. Each opening is to be 7 feet 4 inches (2.2 m) high. The door widths are
27、to be as specified in Figures 5.1 to 5.12.5.2.2.3 effective May 22, 20095.2.2.4 Douglas fir, 3-ply panels measuring 4 by 8 feet (1.2 by 2.4 m) are to be placed on two of the test room walls extending out from a common corner. For the fire tests conducted in the low corner of the room, one panel is t
28、o be placed on each wall with an additional piece of plywood installed on the sloped wall so that it extends to the ceiling. For the fire tests conducted in the high corner of the room, one and a half panels are to be placed on each wall so that the total height of the plywood is 12 ft (3.65 m) and
29、the top portion of the second panel is attached directly to the wall. The panels are to be 1/4 inch (6.4 mm) thick with each ply constructed of Douglas fir. The plywood panels are to be conditioned at 70 5F (212.8C) and 5010 percent. relative humidity for at least 72 hours prior to test. They are to
30、 be placed on the walls by being attached to 1/2-inch (12.7 mm) thick wood furring strips. The Douglas fir plywood panels shall have the burning characteristic properties specified in the Standard for Residential Sprinklers for Fire-Protection Service, UL 1626.5.2.2.4 effective May 22, 2009UL COPYRI
31、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULMAY 22, 2007SUBJECT 1626A75.2.3 Fire source5.2.3.1 The fire source is to be in accordance with the Standard for Residential Sprinklers forFire-Protection Service, UL 1626 with the modifications as specif
32、ied in 5.2.2.4.5.2.3.1 effective May 22, 20095.2.4 Sprinkler installation5.2.4.1 Residential sprinklers are to be installed in the test room as specified in Figures 5.1 to 5.12 for each fire test. For all sprinkler styles, the sprinklers installed in the doorways shall be as follows:a) The same heat
33、 responsive element and temperature rating as the other sprinklers within the room; andb) Installed such that the center of the heat responsive element is 2 inches (50.8 mm) below the top of the doorway.5.2.4.1 effective May 22, 20095.2.4.2 Provisions shall be made to ensure that the sprinklers inst
34、alled in the doorway are not wetted by the sprinklers discharging water within the test room.5.2.4.2 effective May 22, 20095.2.4.3 The residential sprinklers located at the ceiling are to be installed in reducing pipe fittings having a 1 inch (25 mm) inlet and an outlet the same size as the sprinkle
35、r inlet and be supplied with water through1 inch (25 mm) piping. The minimum nipple length leading to the sprinkler fitting shall not be less than 10 inches (254 mm).5.2.4.3 effective May 22, 20095.2.4.4 Pendent and upright sprinklers are to be installed with their deflectors located 3 inches (76 mm
36、) below the ceiling or as specified in the installation instructions if other than 3 inches (76 mm) is specified. A pendent sprinkler also intended to be installed as a recessed pendent sprinkler shall be tested in the most recessed position in lieu of 3 inches (76 mm) below the ceiling. Flush and c
37、oncealed pendent sprinklers are to be installed in their intended location as specified in the installation instructions. Pendent, upright, flush, recessed pendent and concealed pendent sprinklers are to be tested in two orientations for each fire location. One test is to be orientated such that the
38、 sprinkler frame arms or deflector pins are parallel to the short room wall and a second test is to be conducted with the sprinkler frame arms or deflector pins rotated 90 degrees.5.2.4.4 effective May 22, 20095.2.4.5 Recessed and concealed sprinklers having vented escutcheons are to be installed an
39、d tested in a manner that inhibits airflow through the escutcheons (blocked) by placing a 36 by 15-1/2 by 8 inch (910 by 390 by 200 mm) R-25 fiberglass insulating batt over the sprinkler5.2.4.5 effective May 22, 20095.2.4.6 A sidewall sprinkler shall be tested as follows:a) With its deflector locate
40、d 4 inches (100 mm) below the ceiling; andb) With its deflector located at the maximum distance below the ceiling as specified in the installation instructions if the maximum distance exceeds 6 inches (150 mm) below the ceiling.5.2.4.6 effective May 22, 2009UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
41、 FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL8SUBJECT 1626AMAY 22, 20075.3 Test method5.3.1 The test room is to have an ambient air temperature of 805F (273C) measured at the thermocouple located 3 inches (76 mm) below the ceiling in the center of the room. All water from previous
42、 testing shall be removed such that there is no visible water on the floor, ceiling, or walls.5.3.1 effective May 22, 20095.3.2 The temperatures at each thermocouple location are to be continuously recorded during the test using 20 AWG (0.81 mm) chromel-alumel thermocouples or thermocouples providin
43、g equivalent temperature measuring results. When water impingement impacts the thermocouple measurement, the thermocouples are to be shielded from water impingement using metallic tape attached to the wire. The tape is to be formed into an umbrella shape, large enough to protect the thermocouple end
44、s.5.3.2 effective May 22, 20095.3.3 Sixteen ounces (0.5 L) of water and eight ounces (0.24 L) of heptane are to be placed in a pan directly below the wood crib located 2 inches (50 mm) from the wall panels.5.3.3 effective May 22, 20095.3.4 The heptane in the pan located beneath the crib is to be ign
45、ited and the heptane soaked cotton wicks are to be ignited immediately following the heptane pan ignition.5.3.4 effective May 22, 20095.3.5 The fire test is to be conducted for 30 minutes after the ignition of the wood crib, unless after 10 minutes, all the combustibles are extinguished or only the wood crib is sustaining combustion at which point the test is to be terminated. The water flow to the sprinklers is to be the minimum flow rate specified in the installation instructions for the sprinkler coverage area tested.5.3.5 effective May 22, 2009
