1、ANSI Z21.57-2010American National Standard ForRecreational Vehicle Cooking Gas AppliancesTenth Edition - 2010This Standard is based on the Standard forRecreational Vehicle Cooking Gas AppliancesANSI Z21.57-2005Addenda Z21.57a-2007, andZ21.57b-2008AMERICAN NATIONAL STANDARDANSI Z21.57-2010APPROVEDNov
2、ember 11, 2010American National Standards Institute, Inc.CSA AMERICA INC.8501 East Pleasant Valley RoadCleveland, Ohio 44131Published - January 2011Copyright 2011CSA America, Inc.Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or s
3、imilar documents issued by public authorities. Those desiring permission for other republication should consult CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.SecretariatPrefaceThis publication represents a standard for safe operation, substantial and durable construction,
4、and acceptable performance of recreational vehicle cooking gas appliances. It is the result of years of experience in the manufacture, testing, installation, maintenance, inspection and research on appliances designed for the utilization of gas. There are risks of injury to persons inherent in some
5、appliances that, if completely eliminated, would defeat the utility of the appliance. The provisions in this Standard are intended to reduce such risks while retaining the normal function of the appliance.Nothing in this standard is to be considered in any way as indicating a measure of quality beyo
6、nd compliance with the provisions it contains. It is designed to allow compliance of recreational vehicle cooking gas appliances, the construction and performance of which may exceed the various provisions specified herein. In its preparation, full recognition has been given to possibilities of impr
7、ovement through ingenuity of design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations should be forwarded to CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.Safe and satisfactory operation of a recreational vehicle co
8、oking gas appliance depends to a great extent upon its proper installation and it should be installed in accordance with the Standard for Recreational Vehicles, ANSI A119.2, or the National Fuel Gas Code, ANSI Z223.1/NFPA 54, manufacturers installation instructions, and local municipal codes.Users o
9、f this American National Standard are advised that the devices/products/activities within its scope may be subject to regulation at the Federal, state or local level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this standard,
10、 the Federal, state or local regulation should be followed.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute, Inc., require that action be taken to reaffirm, revise or withdraw this standard no later t
11、han five (5) years from the date of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, Inc., 25 West 43rd Street, Fourth Floor, New York, N.Y. 10036, (212) 642-4900.EFFECTIVE DATE: An o
12、rganization using this standard for product evaluation as a part of its certification program will normally establish the date by which all products certified by that organization should comply with this standard.iiHistory Of The Development Of Standard For Recreational Vehicle Cooking Gas Appliance
13、s(This History is informative and is not part of the standard.)Although the preparation and promulgation of standards for domestic gas ranges had been in progress for almost thirty years, the first American Standard for gas ranges approved by the American Standards Association was in 1932. This late
14、st and most comprehensive standard was the result of a general revision and enlargement of the previous standards by the domestic gas range subcommittee of ASA Sectional Committee Z21 under the sponsorship of the American Gas Association.Following this edition of the domestic gas range standard (Z21
15、.1), a number of subsequent editions were issued which included revisions deemed necessary in line with industry developments. In each case, draft revisions were distributed for review and comment and reviewed by the subcommittee prior to finalization of the revised standard.Following the thirteenth
16、 edition of the standard, which was approved as American Standard in 1955, the domestic gas range standard was divided into two volumes. These became the fourteenth edition, Volume I, Free Standing Units (Z21.1.1), and the first edition, Volume II, Built-In Domestic Cooking Units (Z21.1.2), which we
17、re approved as American Standards by the American Standards Association in 1956.As a result of the use of domestic gas ranges by the recreational vehicle and manufactured (mobile) home industry, the standards were modified to cover the special construction and performance features deemed necessary f
18、or ranges for installation in such vehicles. These revisions were included in the first addenda to the standards approved as American Standards in 1960. Subsequent editions of both standards were approved in 1961 and 1964.On August 24, 1966 the American Standards Association was reconstituted as the
19、 United States of America Standards Institute. On October 6, 1969, the United States of America Standards Institute was renamed the American National Standards Institute, Inc.With the increasing popularity of recreational vehicles, the subcommittee concluded that provisions to recognize special appl
20、iance designs and use conditions were needed in the domestic gas range standards. Rather than attempting to add this coverage to the existing standards, the subcommittee prepared a draft standard to cover recreational vehicle cooking gas appliances for use with liquefied petroleum gases. This draft
21、standard, which was comprised of the related coverage from the eighteenth edition of Z21.1.1 and the fifth edition of Z21.1.2, plus additional coverage for vibration, compactness of design, etc., was adopted by the Z21 Committee in March 1971. The first edition of the recreational vehicle cooking ga
22、s appliance standard was approved as American National Standard by the American National Standards Institute, Inc., in 1972.Further revisions in line with developments in gas utilization, including the transfer of the remaining coverage for appliances for recreational vehicle installation from Ameri
23、can National Standard for Household Cooking Gas Appliances (Z21.1) were incorporated in the second edition of the recreational vehicle cooking gas appliance standard which was approved as American National Standard by the American National Standards Institute, Inc., in 1974. The third, fourth, fifth
24、, sixth, seventh, eighth and ninth editions of the recreational vehicle cooking gas appliance standard were approved as American National Standards by the American National Standards Institute, Inc., in 1978, 1982, 1987, 1990, 1993, 2001 and 2005 respectively.This, the tenth edition of the recreatio
25、nal vehicle cooking gas appliance standard was approved by the American National Standards Institute on November 29, 2010iiiPrevious editions of the recreational vehicle cooking gas appliances standard, and addenda thereto, approved by the American National Standards Institute are as follows:Z21.57-
26、1972Z21.57-1974 Z21.57a-1974 Z21.57b-1976Z21.57-1978 Z21.57a-1979 Z21.57b-1981Z21.57-1982 Z21.57a-1982 Z21.57b-1984Z21.57-1987 Z21.57a-1989 Z21.57b-1989Z21.57-1990 Z21.57a-1991 Z21.57b-1993Z21.57-1993 Z21.57a-1997 Z21.57b-1998Z21.57-2001 Z21.57a-2003 Z21.57b-2004Z21.57-2005 Z21.57a-2007 Z21.57b-2008
27、NOTE: This edition of Z21.57 incorporates changes to the 2005 edition of Z21.57 and addenda thereto. Changes, other than editorial, are denoted by a vertical line in the margin.ivZ21/83 Committee on Performance and Installation of Gas Burning Appliances and Related AccessoriesDARYL L. HOSLER, Chairm
28、anPAUL E. BEACH, Vice ChairmanREPRESENTING AIR-CONDITIONING, HEATING orb. For use with natural gas convertible for use with propane gas (see 1.1.3-e).The construction of units is covered under Part I.The performance of units is covered under Part II.1.1.2Larger cooking gas appliances intended for re
29、creational park trailers are covered by the Standard for Household Cooking Gas Appliances, ANSI Z21.1.1.1.3This standard applies to cooking appliances designed to be recessed into, placed upon and attached to the construction of a recreational vehicle. Built in units are further classified as:a. Top
30、 or surface unit. A unit for installation in or on a counter top.b. Oven unit. A unit for installation in a cabinet, wall or partition, or for installation on a counter. It may be a separate oven, may be equipped with a broiler that uses the oven burner, or the oven may serve as a broiler with a bur
31、ner in the upper portion of the oven.c. Broiler unit. May have an open top or be enclosed, may be a separate broiler, or may be combined with a rotisserie.d. Combinations of “-a,“ “-b“ or “-c“ above, or any other cooking device that may be for similar installation.e. Convertible unit. A unit for use
32、 with natural gas and propane gases with provisions for the simple conversion from one gas to the other, equipped with double coaxial main burner orifices and a convertible gas appliance pressure regulator. (Also see Part IV, Definitions.)1.1.4For the purposes of this standard, units are also classi
33、fied as:2a. Full-Sized Unit. Any unit which does not qualify as a compact unit.b. Compact Unit. A unit whose outer casing encloses a volume not in excess of 6 ft3(0.17 m3)and whose weight is not in excess of 80 lb (36.3 kg). For the determination of volume, back-guards, vent extensions, handles, etc
34、., may be removed. For the determination of weight, other easily removable parts such as conventional top burners, oven racks, etc., may also be removed.c. Convertible Unit. A unit for use with natural gas and liquefied petroleum gases with provisions for the simple conversion from one gas to the ot
35、her, equipped with double coaxial main burner orifices and a convertible gas appliance pressure regulator. (Also see Part IV, Definitions.)1.1.5This standard covers all electrical equipment, wiring and accessories built in or supplied for use with an appliance for use with low-voltage direct current
36、 or alternating current. Appliances for use with alternating current shall have a current limitation of 20 amperes and have its electrical equipment, wiring and accessories installed in accordance with the National Electrical Code, ANSI/NFPA 70.This standard covers (a) appliances which use only gas
37、for cooking and which are designed for connection to either a low-voltage direct current supply or nominal 120 volt alternating current supplies; or (b) appliances which also use electrical energy for cooking and which are designed for connection to either nominal 120 volt or 240 volt alternating cu
38、rrent supplies.1.1.6Appliances having sections which use electrical energy for cooking shall comply with the applicable provisions of the Safety Standard for Household Electric Ranges, ANSI/UL 858.1.1.7A microwave cooking appliance incorporated in a recreational vehicle cooking appliance shall compl
39、y with the applicable provisions of the Safety Standard for Microwave Cooking Appliances, UL 923.1.1.8An exhaust hood incorporated in an appliance shall comply with the applicable provisions of the Safety Standard for Electric Fans, ANSI/UL 507.1.1.9If a value for measurement as given in this standa
40、rd is followed by an equivalent value in other units, the first stated value is to be regarded as the specification.1.1.10All references to psi throughout this standard are to be considered gauge pressure unless otherwise specified.1.1.11Exhibit A, List of Reference Standards, contains a list of sta
41、ndards specifically referenced in this standard, and sources from which these reference standards may be obtained.1.2 General Construction And Assembly1.2.1In submitting an appliance for test, the manufacturer may furnish a list of manufacturing tolerances applicable thereto and may have the applian
42、ce tested for compliance with this standard in both extremes of tolerances specified.31.2.2The construction of all parts, whether specifically covered by the various sections of this standard or not, shall be in accordance with reasonable concepts of safety, substantiality and durability.All specifi
43、cations as to construction set forth herein may be satisfied by the construction actually prescribed or such other construction as will provide at least equivalent performance.1.2.3Asbestos shall not be used in construction of a range.1.2.4The general construction and assembly shall be of a neat and
44、 workmanlike character with parts well fitted and bolts or other fasteners drawn up tightly to give rigidity. Exposed edges which might be brought in contact with the hand during usage or adjustment of the appliance shall be smooth.1.2.5Materials used in the construction of an appliance shall be sui
45、table for temperatures to which they will be exposed in use. (Also see 1.2.7.)1.2.6Every part of the appliance shall be of such construction as to be secure against displacement, distortion, warping, vibration or other damage and shall be supported to maintain a fixed relationship between essential
46、parts. Such parts not permanently secured shall be designed so they cannot be incorrectly assembled and cannot be improperly located or misaligned in removing or replacing during cleaning or other servicing.1.2.7The cooking grid, the burner(s), heat distribution plate or flame spreader, and the radi
47、ant support grate of an open top broiler section or top broiler section shall not show evidence of corrosion or distortion when exposed to the elevated temperatures in accordance with the following method of test.Method of TestFor the purpose of this test, 75 percent of the effective area of the coo
48、king grid shall be covered with insulating firebrick measuring approximately 9 x 41/2x 21/2in (229 x 114 x 63.5 mm) and weighing approximately 21/2lb (1.1 kg) per brick, with the 9 x 41/2in (229 x 114 mm) side down. The uncovered area shall comprise a space of about equal width around the perimeter
49、of the covered area.The burner(s) shall be adjusted with the test gas providing the highest specified input rating (see 2.1.2) and then placed in operation under the appropriate test condition in Table I, Gas Pressure and Input Rate Conditions for Use in the Various Performance Tests. The appliance shall be operated continuously for a period of 8 hours, after which time the burner(s) shall be turned off and the appliance allowed to cool to room temperature. This cycle of operation shall be continued for a total operating time of 96 hours.At the conclusion of 96 hours of operation, the spec
