ASTTBC RFPT — Fire Alarm Systems (AL) · Question
During the verification of a Class A DCL circuit, what is the required response when a single 'open' fault is introduced?
S537 (Verification) requires that for a Class A circuit, a physical break is introduced to confirm the panel can still 'see' all devices. A Class A circuit must
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Question: During the verification of a Class A DCL circuit, what is the required response when a single 'open' fault is introduced?
Answer options:
- It must shut down to protect the processor.
- It must sound the alarm immediately. ✅ It must indicate a trouble signal and acknowledge all devices on the loop.
- It must disconnect the return path.
Correct answer: It must indicate a trouble signal and acknowledge all devices on the loop.
Explanation: S537 (Verification) requires that for a Class A circuit, a physical break is introduced to confirm the panel can still 'see' all devices. A Class A circuit must be able to report a trouble while maintaining device operation.
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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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