ASTTBC RFPT — Fire Alarm Systems (AL) · Question
When installing heat detectors on a ceiling of solid joist construction, the distance between detectors shall not exceed:
CAN/ULC-S524 §11.2.1.2 requires the distance between heat detectors to be not more than 0.7 times the listed spacing for smooth ceilings when calculating for jo
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Question: When installing heat detectors on a ceiling of solid joist construction, the distance between detectors shall not exceed:
Answer options:
- 1.0 times listed spacing ✅ 0.7 times listed spacing
- 0.5 times listed spacing
- 1.4 times listed spacing
Correct answer: 0.7 times listed spacing
Explanation: CAN/ULC-S524 §11.2.1.2 requires the distance between heat detectors to be not more than 0.7 times the listed spacing for smooth ceilings when calculating for joisted construction. (Logic: Reduced spacing due to air flow interference).
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Question explanations
- Which of the following constitutes a system 'deficiency' rather than a 'non-conformance' to current standards?
- When a deficiency is corrected, what specific information MUST be recorded in the log?
- Which of the following would be categorized as a 'Non-Conformance' to the Installation Standard (S524) in an i
- In the event of a deficiency that renders the fire alarm system inoperative, what is the mandatory reporting r
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