1.1
This Standard applies to single- and multiple-station carbon monoxide (CO) alarming devices and the CO portion of multi-criteria and multi-sensor (combination) alarms (hereafter referred to as devices). These devices are intended for use in ordinary locations in residential occupancies and include, but are not limited to, dwelling units, recreational vehicles and mobile homes, unconditioned areas, and facilities providing detention occupancy, treatment occupancy, and care occupancy.
1.2
This Standard applies to devices that are intended to protect against acute effects of exposure to CO. Devices are intended to alarm at CO levels below those which could cause a loss of ability to react to the dangers of CO exposure.
Devices are not intended to provide an alarm signal during long-term, low-level CO exposures or slightly higher short term transient CO exposure.
Devices, including the types that numerically display low ( 1.3
This Standard also applies to remote accessories that might be connected to or are intended to be employed with a single- or multiple-station CO alarm.
1.4
This Standard does not apply to
a)
smoke alarms;
b)
smoke detectors;
c)
heat detectors; and
d)
gas or vapour detectors and sensors.
Furthermore, the devices covered by this Standard are not intended for industrial and commercial applications.
1.5
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.
1.6
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.