Preface: This is the first edition of CSA P.12, Standard for energy performance compliance, verification, and ratings of fuel-burning appliances and equipment. This Standard outlines the procedures for statistically-valid verification of performance rating(s), as specified by the manufacturers of fuel-burning appliances and equipment listed in Table 1. While this Standard was developed for use with fuel-burning appliances and equipment, it may be adapted for use with other appliances and equipment. Scope 1.1 This Standard specifies criteria and methods to establish and verify the energy performance ratings for fuel-burning appliances and equipment. This Standard includes procedures for sampling, analysis of test results, and reporting. 1.2 This Standard applies , but is not limited, to the fuel-burning appliances listed in Table 1 and described in Clause 14 that are tested in accordance with CSA Group energy efficiency and related performance standards. 1.3 The values given in SI (metric) units apply in this Standard. The values given in parentheses are for information only. 1.4 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to 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.