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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

In what scenario does the NBCC mandate smoke detectors in air-handling systems?

NBCC 3.2.4.10.(3) requires smoke detectors in each recirculating air-handling system serving more than one storey or more than one fire area.

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Question: In what scenario does the NBCC mandate smoke detectors in air-handling systems?

Answer options:

  • Any system over 2000 CFM ✅ Systems serving more than one storey
  • Only in systems with electrical heating coils
  • Only in Group A occupancies

Correct answer: Systems serving more than one storey

Explanation: NBCC 3.2.4.10.(3) requires smoke detectors in each recirculating air-handling system serving more than one storey or more than one fire area.

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