Under the commercial-kitchen makeup-air coordination described by ICC for the 2024 IMC, how should a mechanical makeup-air system operate relative to the exhaust system it serves?
- AIt should operate only when the exhaust is off.
- BIts operation should be unrelated to exhaust operation.
- It should operate with the exhaust system.
- DIt should be disabled whenever cooking begins.
Where to look it up
https://www.iccsafe.org/building-safety-journal/bsj-technical/exhaust-systems-and-makeup-air-achieving-balance-under-the-2024-international-mechanical-code/
Why C is correct
ICC describes simultaneous operation of mechanical makeup air and exhaust, with replacement air arranged so it does not impair hood capture. This addresses coordination, not a universal spark-arrestor requirement.