CSA 9.2:2019 pdf download.Manual and automatic gas selector devices for use with gas-fired appliances
1.1 CSA 9.2 applies to newly produced gas selector devices (see Clause 3), herein after referred to as a "device", constructed entirely of new, unused parts and materials.
1.2 The device may include functions such as selection of type of gas to operate the appliance and main burner primary air adjustment. The device may also contain multiple passageways that can be selected to allow the gas to pass out through the correct outlet(s) and that may contain the orifice(s). The selector does not provide safety, temperature control, shut-off or pressure regulation. (See Clause 3.) The device may include features such as:
a) main burner primary air adjustment;
b) multiple passageways that can be selected to allow the gas to pass through the correct outlet(s); or
c) orifice(s).
A device may be an individual device or may be incorporated as part of a regulator(s) or other type valve(s). A component(s) performing a function other than that covered by this Standard shall comply with the applicable American National Standard(s) or Canadian Standard(s).
1.3 Compliance of a device with this Standard does not imply that the device is acceptable for use on gas appliances without supplemental tests with the device applied to the particular appliance design.
1.9 This Standard contains SI (Metric) units corresponding 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一Part 1: General, 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, are to be provided.
1.10 In this Standard,“shall" is used to express a requirement, i.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.CSA 9.2 pdf download.