Digital Monitoring Products
1165/1165H/1165HS Detectors Installation Sheet
2
Selecting a suitable location is critical to the
operation of smoke detectors. This equipment
should be installed in accordance with the National
Fire Protection Association’s (NFPA) Standard 72.
Depending on the application, you may need to
reference NFPA 72 or NFPA 101.
Since regulations pertaining to smoke detector
installation vary from state to state, contact the
authority having jurisdiction (AHJ). Where public
safety is primary, the AHJ may be a federal, state,
local, or other regional department or individual such
as a fire chief, fire marshal, chief of a fire prevention
bureau, labor or health department, building official,
electrical inspector, or others having statutory
authority. For insurance purposes, an insurance
inspection department, rating bureau, or other
insurance company representative may be the AHJ. In
some cases, the property owner or their designated
agent assumes the role of the AHJ. At government
installations, the commanding officer or department
official may be the AHJ.
Additional NFPA Guidelines, Smoke Detector
Limitations, and Fire Prevention information are listed
at the end of this document.
General Guidelines
In addition to NFPA 72, use the following location
guidelines to optimize performance and reduce the
chance of false alarms from the detector:
• Locate ceiling-mounted smoke detectors in the center of a room or hallway at least 4 inches from any walls or
partitions
• Locate wall-mounted smoke detectors so the top of the detector is 4 to 12 inches below the ceiling
• Mount smoke detectors on a firm permanent surface
• Locate the detector in environmentally controlled areas where the temperature range is between 40° and
100° F (4.4° and 37.8° C) and the humidity is between 0 and 90% non condensing
• In rooms with sloped, peaked, or gabled ceilings, locate detectors 3 feet (.9 meters) down or away from the
highest point of the ceiling
• When mounting to suspended ceiling tile, the tile must be secured with the appropriate fastener to prevent
tile removal
Locations to Avoid
Do not install smoke alarms/detectors:
• In or near areas where combustion particles are normally present such as in kitchens, garages, near furnaces,
hot water heaters, or gas space heaters
• On the ceiling in rooms next to kitchens where there is no transom between the kitchen and such rooms
• In damp or very humid areas or next to bathrooms with showers, locate detectors at least 5 feet (1.5 meters)
away from bathrooms.
• In very cold or very hot areas
• In dusty, dirty, or insect infested areas
• Away from air conditioners, heating registers, and any other ventilation source that may interfere with smoke
entering the detector.
• Near fresh air inlets or returns or excessively drafty areas — heating/air conditioning vents, fans, and fresh air
intakes can drive smoke away from smoke alarms/detectors
• In dead air spaces at the top of peaked ceilings or in corners where walls and ceiling meet — dead air may
prevent smoke from reaching a smoke alarm/detector.
• Near fluorescent light fixtures — locate smoke alarms/detectors at least 10 feet (3 meters) away from these
fixtures.
In commercial buidings locate
a smoke detector in each room.
Locate a smoke detector
on each level.
In multifamily dwellings, locate smoke alarms/detectors
in hallways and stariwells of each level
Locate smoke alarms/detectors in the living area,
hallway, and in each bedroom of the apartment.
In multifami
ff
ly dwellings, locate smoke alarms/detectors
kk
in hallways and stariwells of each level
Locate smoke alarms/detectors in the l
kk
iving area,
h ll
d i
h b d
f th
t
t
Stairwel
l
Third Floor
Second Floor
First Floor
Stairwel
l
Apartment
Apartment
Apartment
Apartment
Apartment
Apartment
Dining
Room
Living
Room
Kitche
n
Bedroom
Bedroom
Bath
Room
Closet Closet
Closet
Dining
Area
Living
Room
Kitche
n
Bedroom
Bedroom
Bath
Room
Closet Closet
Closet
Bedroom
Bath
Room Closet
Office
Office
Office Office
Office
Office
Office
Office
Stairwel
l
Stairwel
l
Hall
Closet
Office
Elev
ator
Hall
Conference Room
Lobby
Mens Ladies
Hall
H
H
H
Hall
Figure 2: Smoke Detector Placement Locations
