Single station carbon monoxide alarms shall be installed and maintained in the immediate vicinity of the sleeping area in all dwellings that contain a fuel-burning appliance or has an attached garage.
Follow these guidelines when installing alarms:
Carbon monoxide alarms shall be battery operated, hard-wired or of the plug-in type.
If installing an electrically operated device, the AC power source is required to be supplied from either a dedicated branch circuit or the unswitched portion of a branch circuit also used for power and lighting. Operation of a switch (other than a circuit breaker) or a ground-fault circuit interrupter is not permitted to cause loss of power to the alarm.
The alarm may be located on the wall, ceiling, or other location as specified in the manufacturer’s installation instructions. A visual alarm type carbon monoxide alarm shall be installed where a person resides who is deaf or hearing-impaired.
When a dwelling unit does not itself contain a fuel-burning appliance or have an attached garage and there is a dwelling unit on the floor above or below that has a fuel-burning appliance, a carbon monoxide alarm is required in the vicinity of the sleeping areas.