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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

When considering zoning for smoke detectors used for "Elevator Recall," what is the requirement?

Under CAN/ULC-S524, individual fire detectors (smoke/heat) used for elevator recall or smoke control interfaces must be uniquely identified (addressed or zoned)

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Question: When considering zoning for smoke detectors used for "Elevator Recall," what is the requirement?

Answer options:

  • They can be on the general floor zone.
  • They must be connected via Class A only.
  • They are exempt from zoning rules. ✅ They must be identifiable to differentiate between floors and shafts.

Correct answer: They must be identifiable to differentiate between floors and shafts.

Explanation: Under CAN/ULC-S524, individual fire detectors (smoke/heat) used for elevator recall or smoke control interfaces must be uniquely identified (addressed or zoned) to ensure proper sequence of operations is initiated.

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