NFPA Recommendations for Detector InstalIation:
The Nation Fire Protection Association’s Standard 74, Section 2-l, reads as follows:
‘2-1.1.1: Smoke detectors shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms and on each additional story of the family living unit, including basements and excluding crawl spaces and unfinished attics. The provisions of 2-1.1.1 represent the minimum number of detectors required by this standard. It is recommended that the householder consider the use of additional smoke or heat detectors for increased protection for those areas separated by a door from the areas protected by the required smoke detector under 2-1.1.1 above. The recommended additional areas are: living room, dining room, bedroom(s), kitchen, attic (finished or unfinished), furnace room, utility room, basement, integral or attached garage, and hallways not covered under 2-1.1.1 above. However, the use of additional detectors remains the option of the householders.’
SSDT Installation Considerations:
. When ceiling mounted, the SSDT should be located in the center of the room or hall, at least four inches from any wall. When the SSDT is mounted on a wall, the top of the unit should be four to twelve inches from the ceiling.
. Do not install the SSDT:
where normal ambient temperatures are above l20 degrees F. or below 40 degrees F.
in front of air conditioners, heating vents, or other locations where normal air circulation will keep smoke from entering the detector.