Heat Detector CR135, Rate-of-Rise and Fixed Temperature

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The Heat Detector CR135 is a combination rate-of-rise and fixed temperature detection.

How Rate-of Rise Works:

  • A temperature increase at the sensor of 15°F (9°C) or more per minute activates the rate-of-rise feature. This closes the contacts in the sensor to transmit the alarm condition to the fire alarm control panel. When the rate-of-rise element alone has been activated, the sensor is self-restoring.
How Fixed Temperature Works:
  • If the temperature of the center disk rises to the sensor’s rated temperature, the fixed temperature element activates. This closes contacts in the sensor and transmits an alarm condition to the fire alarm control panel. The fixed temperature element is non-restorable and, when activated, the detector must be replaced. The need for replacement is indicated when the center disk has fallen free from the detector.
NOTE: This equipment is part of an integral system and it usually requires a licensed contractor to install or replace this equipment. Verify your local law requirements as installing this equipment may have legal consequences.

Notes not available!.