CFAA Fire Alarm Technician · Question
In an addressable system, can the remote annunciator be used to display the status of ancillary functions such as 'Fan Running'?
Ancillary device status (like fan on/off) is permitted but MUST be visually distinct from Fire Alarm, Supervisory, and Trouble LEDs (usually different colours l
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Question: In an addressable system, can the remote annunciator be used to display the status of ancillary functions such as 'Fan Running'?
Answer options:
- It is strictly prohibited by ULC S527
- It can only be shown on a separate PC-based display
- It can use the same red LEDs as the fire zones ✅ It is permitted but must be clearly distinguished from fire alarm signals
Correct answer: It is permitted but must be clearly distinguished from fire alarm signals
Explanation: Ancillary device status (like fan on/off) is permitted but MUST be visually distinct from Fire Alarm, Supervisory, and Trouble LEDs (usually different colours like green or amber).
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Question explanations
- The primary power for a fire alarm system must be:
- If a 120VAC primary power circuit for a fire alarm control unit is consuming 60 Watts of power, what is the cu
- In a steady-state DC circuit, if the conductor length is doubled while maintaining voltage and wire gauge, wha
- A resistor is rated at 10 Watts at 24VDC. If the voltage drops to 20VDC, what is the new power dissipation?
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