CSA B140.12:22

Preface

This is the fifth edition of CSA B140.12, Oil-fired service water heaters for domestic hot water, space heating, and swimming pools . It supersedes the previous edition, published in 2003 under the title Oil-Burning Equipment: Service Water Heaters for Domestic Hot Water, Space Heating, and Swimming Pools. It also supersedes the third edition, published in 1976 under the title Oil-Fired Service Water Heaters and Swimming Pool Heaters, and the first two editions, published in 1972 and 1966 under the title Oil-Fired Service Water Heaters. CSA B140.12 is one of a series of oil-burning equipment Standards providing minimum requirements for the safe operation, acceptable performance, design, construction, manufacture, marking, and testing of oil-burning equipment. It should be read in conjunction with CSA B140.0, Oil-burning equipment: General requirements. The major changes in this edition include the following: a) The title has been changed from Oil-Burning Equipment: Service Water Heaters for Domestic Hot Water, Space Heating, and Swimming Pools to Oil-fired service water heaters for domestic hot water, space heating, and swimming pools. b) Reference publications have been updated (Clause 2). c) All definitions have been deleted, and a reference has been inserted to redirect users to the definitions in CSA B140.0 (Clause 3). d) The requirement for electrical features has been removed because it is covered in CSA B140.0. e) A new requirement has been added requiring appliances tested for use with biodiesel content in excess of 5% to have the burner and the fuel-delivery system components acceptable to the certification body for the blend specified (Clause 5.17). f) The information required on the marking has been updated to include the input rate when the water heater is acceptable to the certification body for use with biodiesel content in excess of 5% (Clause 6.1). g) The requirement for a cleanout brush or scraper being available from the manufacturer has been deleted (Clause 6.2.1). h) Additional information has been added to the instructions (Clause 7.1). i) Guidance has been provided to be included in the operating instructions when the water heater is acceptable to the certification body for use with biodiesel content in excess of 5% and No. 1 (kerosene) oil (Clause 7.3). j) Guidance has been added for testing when the water heater is acceptable to the certification body for use with fuel having biodiesel content in excess of 5% and not exceeding 20% (Clause 8.2.12). k) New requirements have been added when testing with biodiesel content in excess of 5% (Clause 8.3.4). l) A new annex (Annex A) containing French translations for specified markings has been added. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was prepared by the Technical Committee on Oil-Burning Appliance Standards, under the jurisdiction of the Strategic Steering Committee on Fuels and Appliances, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope

1.1 Intent This Standard applies to complete flue-connected, oil-fired service water heaters that are provided with automatic control devices. These service water heaters may be used both for heating and for supplying of domestic hot water. They are not intended to be used as sole-source heating appliances.

1.2 Application The requirements in this Standard apply to a) service water heaters to be operated at pressures not exceeding 1035 kPa (150 psi) and water temperatures not exceeding 99 °C (210 °F); and b) the oil-burning equipment, and appurtenances thereto, included in the assembly of the water heater.

1.3 Heaters for swimming pool water Requirements for heaters for heating swimming pool water are included in Clause 11.

1.4 Terminology 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 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.

1.5 Units of measurement The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.