CSA B140.7-05 (R2019)

1.1 This Standard applies to complete vent (flue)-connected, oil-fired steam, and/or hot-water boilers that are provided with automatic control devices.

1.2 This Standard applies to

(a) boilers intended for residential use having an input of less than 11.5 L/h (3 USGPH), which is approximately equivalent to 117 kW (400 000 Btu/h)

(b) low-pressure boilers intended for commercial and industrial use having an input of 11.5 L/h (3 USGPH) or more

(c) high-pressure boilers regardless of intended use or input

1.3 This Standard applies to boilers, factory- or field-assembled, that have been, or could have been, completely assembled at the manufacturer’s plant and transported in the assembled condition.

1.4 This Standard also applies to

(a) oil-fired boilers that have gas-fired pilots and that have an input of 11.5 L/h (3 USGPH), which is approximately 117 kW (400 000 Btu/h), or more

(b) boilers that may be gas fired as an alternative

1.5 This Standard does not cover the devices required on the gas train of the boilers described in Clause 1.4.

1.6 A unit that differs from those specified by this Standard may be examined and tested according to the intent of this Standard.

1.7 A unit that otherwise complies with the requirements of this Standard will not be deemed as complying with this Standard if it has other, or a combination of, features that, when examined and tested, are found to impair its fulfillment of the requirements.

1.8 This Standard also applies to boilers intended for heating swimming pool water (see Clause 3.6).

1.9 In CSA Standards, “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; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. 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.

1.10 The values given in SI (metric) units are the standard. The values given in parentheses are for information only.