Preface This is the fourth edition of ANSI Z21.58 / CSA 1.6, Outdoor cooking gas appliances. It supersedes the previous editions published in 2007, 2005 and 1995. Scope 1.1 This Standard applies to newly produced outdoor cooking gas appliances (see Clause 3) constructed entirely of new, unused parts and materials. Outdoor cooking gas appliances submitted for examination under this Standard are classified as portable, stationary, or built-in. 1.2 This Standard applies to outdoor cooking gas appliances mounted to the exterior of a recreational vehicle (RV grills) (see Clause 3) for connection to the recreational vehicle's low pressure LP gas supply system (see Clause 1.8). It does not apply to outdoor cooking gas appliances for installation in the interior living space of a recreational vehicle. 1.3 This Standard does not apply to outdoor cooking gas appliances for installation in or on boats. 1.4 An outdoor cooking gas appliance may be a: a) broiler unit; b) top or surface unit; c) oven; d) combination of (a), (b) or (c) above, or any other outdoor cooking gas appliance; or e) RV grill. 1.5 Ovens shall not be of the self-cleaning type (see Clause 3). 1.6 Outdoor cooking gas appliances may be for connection to: a) a fixed fuel piping system. b) a remote self-contained liquefied petroleum gas supply system (see Clause 3, Definitions), provided the appliance is supplied with remote mounting and retention means for the attachment of a single cylinder with a maximum size in accordance with Clause 1.6(b) or Clause 4.4.4(c) and instructions for installing the mounting and retention means within the built-in enclosure. c) a self-contained liquefied petroleum gas supply system with an integral cylinder mounting means, for attachment to a single cylinder: i) outdoor cooking gas appliances with input ratings less than 80,000 Btu/h shall be designed to accommodate a vertically mounted cylinder with a maximum size of 20 lb (9.1kg) of fuel. ii) outdoor cooking gas appliances with input rating greater than or equal to 80,000 Btu/h shall be designed to accommodate a vertically mounted cylinder with a maximum size of 30 lb (13.6 kg) of fuel. d) a self-contained liquefied petroleum gas supply system with an integral cylinder mounting means for the attachment of not more than two vertically mounted vapor withdrawal cylinders, each with a maximum size of 20 lb (9.1 kg) of fuel for outdoor cooking gas appliances with input ratings greater than or equal to 80,000 Btu/hr. 1.7 This Standard applies to outdoor cooking gas appliances operating at inlet gas pressures not to exceed 1/2 psi (3.5 kPa) for connection to a fixed fuel piping system for use with: a) natural gas; b) manufactured gas; c) mixed gas; d) liquefied petroleum gases; and e) LP gas-air mixtures. This Standard also applies to outdoor cooking gas appliances designed for connection to self-contained LP gas supply systems (see Clause 4.5) operating at regulated outlet pressures: a) not to exceed 11 in wc (2.74 kPa); and b) in excess of 11 in wc (2.74 kPa) but not greater than 5 psi (34.5 kPa). The construction of outdoor cooking gas appliances for use with the above-mentioned gases is covered under Clause 4, Construction. The performance of outdoor cooking gas appliances for use with the above-mentioned gases is covered under Clause 5, Performance. 1.8 Built-in outdoor cooking gas appliances may be for connection to: a) a fixed fuel piping system; or b) a remote self-contained liquefied petroleum gas supply system (see Clause 3, Definitions), provided the appliance is supplied with remote mounting and retention means for the attachment of a single cylinder with a maximum size in accordance with Clause 1.6(b) and instructions for installing the mounting and retention means within the built-in enclosure. 1.9 An outdoor cooking gas appliance conforming to Clause 1.6(c)(ii), and that is capable of accepting either a 20 lb (9.1 kg) or a 30 lb (13.6 kg) LP gas cylinder, shall have all applicable tests in Clause 4 and Clause 5 conducted with both size cylinders. 1.10 An outdoor cooking gas appliance having integral mounting and retention means shall be designed so a spare 20 lb (9.1 kg) or 30 lb (13.6kg) LP gas cylinder cannot be stored within any enclosure, or under the firebox of the appliance. 1.11 Throughout this document gage pressures are designated in pounds per square inch, (psi) and kilopascals (kPa). Use of the terminology "psig" is not used. Where "psi" is used it is understood to be pound per square inch gage. Absolute pressures are not used in this Standard. 1.12 This Standard contains SI (Metric) equivalents to the yard/pound quantities, the purpose being to allow the Standard to be used in SI (Metric) units. (IEEE/ASTM SI 10, American National Standard for Metric Practice, or ISO 80000-1:2009, Quantities and units - Part 1: General (Standard for use of the International System of Units (SI): The Modern Metric System, IEEE/ASTM SI 10 or ISO 80000-1:2009 Quantities and units - Part 1: General are is used as a guide in making metric conversion from yard/pound quantities.) If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for a measurement and a corresponding value in other units are both specified as a quoted marking requirement, the first stated unit, or both shall are to be provided. 1.13 In this Standard, "shall" is used to express a requirement, .e., a provision that the user shall satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. 1.14 Clause 7 contains provisions that are unique to the United States. 1.15 Clause 8 contains provisions that are unique to Canada. 1.16 Clause 2 contains a list of standards specifically referenced in this Standard and sources from which these reference standards may be obtained. 1.17 An outdoor cooking gas appliance covered by this Standard need not comply with the provisions of the Standard for Gas-Fired Appliances for Outdoor Installations, CAN1-2.21.