Owner's Manual

• Locate an alarm in every room where someone sleeps with the
door closed. The closed door may prevent an alarm not located
in that room from waking the sleeper.
• Smoke, heat, and combustion products rise to the ceiling and
spread horizontally. Mounting the smoke alarm on the ceiling in
the center of the room places it closest to all points in the room.
Ceiling mounting is preferred in ordinary residential construction.
• For mobile home installation, select locations carefully to avoid
thermal barriers that may form at the ceiling. For more details,
see MOBILE HOME INSTALLATION below.
• When mounting an alarm on the ceiling, locate it at a minimum
of 4” (10cm) from the side wall (see Figure 1).
• When mounting the alarm on the wall, use an inside wall with
the top edge of the alarm at a minimum of 4” (10cm) and a
maximum of 12” (30.5cm) below the ceiling. (see Figure 1).
• 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).
NFPA 72 states: “Smoke alarms in rooms with ceiling slopes
greater than 1 foot in 8 feet (.3m in 2.4m) horizontally shall be
located on the high side of the room.” NFPA 72 states: “A row
of alarms shall be spaced and located within 3 ft (0.9m) of the
peak of the ceiling measured horizontally” (see Figure 3).
FIGURE 1
FIGURE 2 FIGURE 3