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Smoke alarms must receive their primary power from the building wiring and must be equipped with a battery backup. Smoke alarms with integral strobes that are not equipped with battery backup must be connected to an emergency electrical system. Smoke alarms must emit a signal when the batteries are low. Wiring must be permanent and without a disconnecting switch other than as required for overcurrent protection.
Exceptions:
1. Smoke alarms are allowed to be solely battery powered in areas of buildings erected for or converted to residential use before June 1, 1984, where interior work requiring a permit has not taken place since June 1, 2020.
2. Smoke alarms are allowed to be solely battery powered in areas of buildings erected for or converted to residential use before June 1, 1984, undergoing alterations or repairs that do not result in the removal of interior wall or ceiling finishes exposing the structure, unless there is an attic, crawl space, or basement available that could provide access for installing wiring without the removal of interior finishes.
On and after January 1, 2022, where smoke alarms that are solely battery powered are allowed by the exceptions to Section 14X-5-504.8.1 or 14X-5-504.8.3, such smoke alarms must be powered by self-contained, non-removable, long term batteries
Exceptions:
1. In owner-occupied dwelling units, fully functioning smoke alarms installed before January 1, 2023 and marked with a date of manufacture no more than 10 years before the date of use.
2. In all occupancies other than owner-occupied dwelling units, fully functioning smoke alarms installed before January 1, 2022 and marked with a date of manufacture no more than 10 years before the date of use.
3. A smoke alarm that uses either a low-power radio frequency wireless communication signal or wireless local area networking capability to send and receive notifications using the Internet.
A single-station smoke alarm must be installed on the uppermost ceiling of every exit stairway.
Exceptions:
1. Buildings of Type I or IIA construction.
2. Where smoke detectors connected to a fire alarm system have been installed as a substitute for smoke alarms and the system provides required occupant notification.
Carbon monoxide alarms must be provided in existing structures in accordance with Sections 14X-5-504.9.1 through 14X-5-504.9.3. Installation must be in accordance with Section 915.4 of the Chicago Building Code.
Exceptions:
1. Carbon monoxide alarms are allowed to be solely battery operated where the code that was in effect at the time of installation did not require hard-wired carbon monoxide detectors to be provided.
2. A carbon monoxide detection system in accordance with Section 915.5 of the Chicago Building Code is an acceptable alternative to carbon monoxide alarms.
3. A carbon monoxide alarm is not required by this section in any occupancy or at any location where a carbon monoxide alarm is not required by Section 915 of the Chicago Building Code.
Carbon monoxide alarms must be provided in dwelling units and sleeping units, at locations specified in Section 915.2 of the Chicago Building Code, where:
1. The unit contains a fuel-burning appliance.
2. The unit contains a fuel-burning fireplace.
3. The unit is served by a fuel-burning forced-air heating or cooling system.
4. The unit is located in a building that contains a fuel-burning appliance or fuel-burning fireplace and there are openings or ductwork connecting the unit to the space containing the fuel-burning device.
5. The unit has a door leading directly to a private garage.
6. The unit is immediately above a private garage.
Carbon monoxide alarms must be provided in classrooms, at locations specified in Section 915.2 of the Chicago Building Code, where:
1. The classroom contains a fuel-burning appliance.
2. The classroom contains a fuel-burning fireplace.
3. The classroom is served by a fuel-burning forced-air heating or cooling system.
4. The classroom is located in a building that contains a fuel-burning appliance or fuel- burning fireplace and there are openings or ductwork connecting the classroom to the space containing the fuel-burning device.
5. The classroom has a door leading directly to a private garage.
6. The classroom is immediately above a private garage.
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