Heat Detectors

Heat detectors come in a wide variety. Some just set off at a certain degree of heat. Once it gets to a certain temperature, most heat detectors have a heat-sensitive element that "pops" when the temperature is reached. Here we feature the System Sensor 5603, which offers a maximum temperature of 135 degrees, and the 5604 offering a 194-degree maximum temperature. 

There are other heat detectors that not only sense a certain temperature when it's reached, but also can sense when the temperature rises at a certain rate of speed. These heat detectors contain two elements referred to as thermocouples. One thermocouple monitors heat transferred by convection or radiation, while the other responds to ambient temperature as mentioned above. The detector responds when the first sensing element's temperature increases relative to the other. Put simply, if the temperature rises at least 15 degrees within any given minute, the detector will trigger. These combination rate-of-rise detectors include the System Sensor 5601, which offers a 135-degree maximum temperature, and the 5602, offering a 194-degree maximum temperature. 

Heat detectors are unpowered fire detection devices, and as such, are simply connected to an available zone circuit on your system. Heat detectors can be chained off of a single zone if needed, or they can be connected to individual zones so they can all be labeled individually.