Use and Care Manual

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” (10 cm) 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” (10 cm) and a
maximum of 12” (30.5 cm) 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.
m)
4
4"
(10 cm)
4"
MINIMUM
BEDROOM
BEDROOM KITCHEN
LIVING ROOM
BEDROOM
BEDROOM
BEDROOM
BASEMENT
KITCHEN
HALL
BEDROOM
LIVING
ROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
(10 cm)
4"
CEILING
DEAD AIR
SPACE
SIDE
WALL
M
INIMUM
(30.5 cm)
12"
MAXIMUM
BEST
HERE
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS AREA
NEVER
HERE
ACCEPTABLE
HERE
(10 cm)
4"
MINIMUM
BEDROOM
BEDROOM KITCHEN
LIVING ROOM
BEDROOM
BEDROOM
BEDROOM
BASEMENT
KITCHEN
HALL
BEDROOM
LIVING
ROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
(10 cm)
4"
CEILING
DEAD AIR
SPACE
SIDE
WALL
MINIMUM
(30.5 cm)
12"
MAXIMUM
BEST
HERE
NOT
I
NEVER
HERE
ACCEPTABLE
HERE
FIGURE 2
FIGURE 3
FIGURE 1
(0.9 m)
3'
(0.9 m)
3'
(0.9 m)
3'
(102 mm)
4"
(102 mm)
4"
(10 cm)
4"
MINIMUM
BEDROOM
B
EDROOM KITCHEN
LIVING ROOM
B
EDROOM
BEDROOM
B
EDROOM
BASEMENT
KITCHEN
HALL
BEDROOM
LIVING
ROOM
SINGLE FLOOR PLAN
MULTIPLE
FLOOR PLAN
(10 cm)
4"
CEILING
DEAD AIR
SPACE
SIDE
WALL
MINIMUM
(30.5 cm)
12"
MAXIMUM
BEST
HERE
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
NOT
IN THIS
AREA
ANYWHERE
IN THIS AREA
NEVER
HERE
A
CCEPTABLE
HERE
(0.9 m)
3'
(0.9 m)
3'
(
(102 mm)
4"
(
B
EDROOM KITCHEN
LIVING ROOM
B
EDROOM
B
EDROOM
B
E
SINGLE FLOOR PLAN
M
CEILING
D
BEST
HERE
NOT
IN THIS
AREA
ANYWHERE
IN THIS
AREA
N
NEVER
HERE
ACCEPTABLE
HERE