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ASTTBC RFPT — Fire Alarm Systems (AL) · Question

When installing a fire alarm control unit, what is the maximum allowable ambient temperature range for the installation environment unless listed otherwise?

S524 Clause 5.1.4 requires the control unit to be in a location with an ambient temperature between 0°C and 40°C unless otherwise listed. Humidity must not exce

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Question: When installing a fire alarm control unit, what is the maximum allowable ambient temperature range for the installation environment unless listed otherwise?

Answer options:

  • -10°C to 50°C
  • 5°C to 35°C ✅ 0°C to 40°C
  • 10°C to 30°C

Correct answer: 0°C to 40°C

Explanation: S524 Clause 5.1.4 requires the control unit to be in a location with an ambient temperature between 0°C and 40°C unless otherwise listed. Humidity must not exceed 90%.

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