A building has CO alarms and fuel-burning appliances. Which statement about the alarms is correct?
- AThey make combustion-air provisions unnecessary.
- They provide warning but do not replace proper appliance installation, venting and maintenance.
- CThey prevent appliances from producing CO.
- DTheir presence proves every flue is unobstructed.
Where to look it up
https://www.cpsc.gov/Safety-Education/Safety-Education-Centers/Carbon-Monoxide-Information-Center
Why B is correct
CO alarms warn of a hazard; they do not correct its source. Follow appliance installation and maintenance requirements as well as alarm instructions.