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There are three common styles of Heat Detectors:
•
Rate of Rise:
Recognizes a rapid increase of heat within its installed area. When the
ambient temperature, as measured by its internal thermostat, rises more than 15
o
F in
one minute, the alarm is triggered. Some types of heat detectors may use a sealed
chamber. As the temperature rises, the air within the sealed chamber expands. Should
the chamber air expand faster than it can escape through the calibrated vent, the
diaphragm is depressed, and the electrical contact closes the circuit, triggering the
alarm.
•
Fixed Heat:
Activates once the temperature reaches the defined setting. This type will
activate once, and then need to be replaced. The fixed temperature element reacts to
heat by responding to a specific temperature setting (135º F or 194º F). The detection
method is based on the spring action of a metal contact held to the metal chamber by a
fusible alloy. When the temperature reaches the alloy’s melting point, the metal contact
springs up, closing the circuit and triggering the alarm.
•
Dual:
Includes both Rate of Rise and Fixed Heat sensors
Heat detectors are installed normally in areas such as garages, basements, attics, kitchens,
boiler rooms, bathrooms and smoking areas. They are used for property protection and not life
safety.
Caring for the Smoke Detector
Your smoke detector is sensitive to dust and particles in the air. False alarms can occur if
activities creating excess dust or smoke are performed near the detector. To avoid false alarms,
before performing any activity near the smoke detector which may cause excessive dust or
smoke, such as remodeling or soldering, place your system on test. Please refer to the
page. If remodeling or other activity will create excessive dust for an extended period,
please either remove the smoke detector or cover it with a plastic cover before beginning
construction. Do not paint the smoke detector; this will cause it to become non-operational.
Dust and other particles will collect on the smoke detector over
time. Cleaning the smoke detector every 3-6 months will help to
avoid false alarms. The following cleaning steps refer to the
wireless Ademco Honeywell model 5806W3. Further information is
available in the
1. Place your system in Test mode. Please refer to the
2. Remove the detector housing from the base by twisting counter-clockwise.
3. Remove the battery from the unit.
