Attic Heat Detector Placement

Nfpa 72 17 6 3 1 2 does what it can to make heat detector layout in irregularly shaped areas less complicated.

Attic heat detector placement.

All i have a relatively large attic that covers about 1600 sq ft of my house. Install the first attic smoke detector on the wall near the stairs anywhere between the 4 inch and 12 inch marks. The us fire administration fema recommends that you have a heat detector rather than a smoke alarm in your garage. When you find yourself doing a layout for spot type heat detectors in an area that isn t square or rectangular don t forget 17 6 3 1 2 provides you with some options.

It gets very hot up there in the summer southern california so i thought it would be prudent to install a few high temperature heat sensors i bought 3 194 degree heat detectors. However as i prepare to install them i wanted to get others. Ceiling height construction and ventilation play significant roles in detector performance and must be considered when determining detector placement. This is a continuation on the series of articles about the most important requirements in nfpa 72 national fire alarm code book.

Another location in a home where you should have a heat detector rather than a smoke alarm is the attic. Spot type heat detectors should be selected so that the rating is at least 20 f 11 c above maximum expected ceiling temperature. Nfpa 72 chapter 5 initiating devices heat detectors. Page 1 of 2 heat detectors in an attic.

Posted in home automation. E hd fixed temperature rate of rise heat detector. They feature a detecting component inside the unit that activates an alarm when it reaches a predetermined temperature. The alarm will sound if temperatures rise above 135 f.

Regardless of where you place a heat detector these devices should be placed away from any vents or ducts that may interfere with their function. The interconnect system must not exceed the nfpa national fire protection association limit of 18 initiating devices smoke heat co etc. Heat detectors represent fairly old technology and the first residential fire alarms were of this type. The kidde hd135 f is inter connectable.

Smoke alarms are not designed for garages and attics and are much more likely to fail than a heat detector. Ceiling mounted detectors should be located such that their sensitive elements are between 25mm and 150mm below the ceiling in the case of heat detectors or between 25mm and 600mm below the ceiling in the case of smoke detectors. Be fixed where they can be reached to maintain therefore not over the stairs. We recommend placing them high off of the ground or on the ceiling.

Heat detectors are sufficient for places where speed of detection isn t critical or in small confined spaces.