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For mobile home installation, select locations carefully to avoid thermal barriers that may form at the ceiling. For
more details, see MOBILE HOME INSTALLATION section.
•
When mounting an alarm on the ceiling, locate it at a minimum of 4” (10 cm) from the side wall.
•
When mounting the alarm on the wall, use an inside wall with the top edge of the alarm at a minimum of 4” (10 cm)
and a maximum of 12” (30.5 cm) below the ceiling.
•
Put smoke alarms at both ends of a bedroom hallway or large room if the hallway or room is more than 30 feet
(9.1 m) long.
•
Install Smoke Alarms on sloped, peaked or cathedral ceilings at or within 3ft (0.9m) of the highest point (measured
horizontally).
This equipment should be installed in accordance with the National Fire Protection Association’s 72 (National Fire Protec-
tion Association, Batterymarch Park, Quincy, MA 02269).
Mobile Home Installation
Modern mobile homes have been designed and built to be energy efficient. Install smoke alarms as recommended
above. In older mobile homes that are not well insulated compared to present standards, extreme heat or cold can be
transferred from the outside to the inside through poorly insulated walls and roof. This may create a thermal barrier
which can prevent the smoke from reaching an alarm mounted on the ceiling. In such units, install the smoke alarm on
an inside wall with the top edge of the alarm a minimum of 4” (10 cm) and a maximum of 12” (30.5 cm) below the ceiling.
If you are not sure about the insulation in your mobile home, or if you notice that the outer walls and ceiling are either
hot or cold compared to the room air temperature, install the alarm on an inside wall. NFPA 72 (National Fire Protection
Association) requires smoke alarms be installed in each sleeping area.
wArnIng: teSt yOUr AlArM OperAtIOn After MObIle HOMe HAS been In StOrAge Or UnOc-
cUpIed, And At leASt Once A weeK dUrIng USe.
