Visonic Inc. MCT430 ユーザーズマニュアル
DE3643
3
Figure 3. Placement of a Smoke/Heat Detector in a Single-Floor
Residence with Only One Sleeping Area
Figure 4. Placement of Smoke/Heat Detectors in Single-Floor
Residence with More than One Sleeping Area
Figure 5. Placing Smoke/Heat Detectors in a Multi-Floor Residence
•
Install basement detectors at the bottom of the basement
stairwell, as shown in Figure 5.
stairwell, as shown in Figure 5.
•
Install second-floor detectors at the top of the first-to-second
floor stairwell.
floor stairwell.
•
Be sure no door or other obstruction blocks the path of smoke
to the detector.
to the detector.
•
Install additional detectors in your living room, dining room,
family room, attic, utility and storage rooms.
family room, attic, utility and storage rooms.
•
Install smoke detectors as close to the center of the ceiling as
possible. If this is not practical, put the detector on the ceiling,
at least 10 cm (4 inches) away from any wall or corner, as
shown in Figure 6.
possible. If this is not practical, put the detector on the ceiling,
at least 10 cm (4 inches) away from any wall or corner, as
shown in Figure 6.
•
If ceiling mounting is not possible and wall mounting is
permitted by your local and state codes, put wall-mounted
detectors between 10 - 15 cm (4 - 6 inches) from the ceiling,
also shown in Figure 6.
permitted by your local and state codes, put wall-mounted
detectors between 10 - 15 cm (4 - 6 inches) from the ceiling,
also shown in Figure 6.
•
If some of your rooms have sloped, peaked, or gabled ceilings,
try to mount detectors 0.9 meter (3 feet) measured horizontally
from the highest point of the ceiling, as shown in Figure 7.
try to mount detectors 0.9 meter (3 feet) measured horizontally
from the highest point of the ceiling, as shown in Figure 7.
Figure 6. Recommended Best
and Acceptable Locations to
Mount Smoke Detectors
Figure 7. Recommended
Location to Mount Smoke
Detectors in Rooms with
Sloped, Gabled or Peaked
Ceilings
CAUTION (As required by California State Fire Marshall)
"Early warning fire detection is best achieved by the
installation of fire detection equipment in all rooms and
areas of the household as follows:
installation of fire detection equipment in all rooms and
areas of the household as follows:
(1) A smoke detector installed in each separate sleeping area (in
the vicinity, but outside the bedrooms), and (2) Heat or smoke
detectors in the living rooms, dining rooms, bedrooms, kitchens,
hallways, attics, furnace rooms, closets, utility and storage
rooms, basements and attached garages."
the vicinity, but outside the bedrooms), and (2) Heat or smoke
detectors in the living rooms, dining rooms, bedrooms, kitchens,
hallways, attics, furnace rooms, closets, utility and storage
rooms, basements and attached garages."
For your information, NFPA Standard 72, Section 2-2.1.1.1 reads
as follows:
as follows:
"Smoke detectors shall be installed outside 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. In new
construction, a smoke detector also shall be installed in each
sleeping room."
The above NFPA standard is a minimum requirement for smoke
detector installation. For better protection, we also require the
installation of a smoke detector inside every bedroom in existing
construction.
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. In new
construction, a smoke detector also shall be installed in each
sleeping room."
The above NFPA standard is a minimum requirement for smoke
detector installation. For better protection, we also require the
installation of a smoke detector inside every bedroom in existing
construction.
4.2 Where Not to Install Smoke Detectors
False alarms occur when smoke detectors are installed where
they will not work properly. To avoid false alarms, do not install
smoke detectors in the following situations:
they will not work properly. To avoid false alarms, do not install
smoke detectors in the following situations:
•
In or near areas where combustion particles are normally
present such as kitchens; in garages where there are
particles of combustion in vehicle exhausts; near furnaces,
hot water heaters, or gas space heaters. Install detectors
at least 20 feet (6 meters) away from kitchens and other
areas where combustion particles are normally present.
present such as kitchens; in garages where there are
particles of combustion in vehicle exhausts; near furnaces,
hot water heaters, or gas space heaters. Install detectors
at least 20 feet (6 meters) away from kitchens and other
areas where combustion particles are normally present.
•
On the ceiling in rooms next to kitchens where there is no
transom between the kitchen and these rooms. Instead, install
the smoke detector on an inside wall, furthest from the kitchen.
Be sure not to install smoke detectors within 4"
transom between the kitchen and these rooms. Instead, install
the smoke detector on an inside wall, furthest from the kitchen.
Be sure not to install smoke detectors within 4"
of the ceiling or
any corner or more than 6"
from the ceiling.
•
In damp or very humid areas, or next to bathrooms with
showers.
showers.
•
The moisture in humid air can enter the sensing chamber as
water vapor, then cool and condense into droplets that cause a
nuisance alarm. Install detectors at least 5 feet (1.5 meters)
away from bathrooms.
water vapor, then cool and condense into droplets that cause a
nuisance alarm. Install detectors at least 5 feet (1.5 meters)
away from bathrooms.
•
In
very
cold or very hot rooms or areas. Operating temperature
of the smoke detector is 40°F to 100°F (4°C to 38°C).
•
In dusty, dirty, or insect-infested areas. Dust and dirt can
build up on the detector’s sensing chamber and make it overly
sensitive, or can block openings to the sensing chamber and
keep the detector from sensing smoke.
build up on the detector’s sensing chamber and make it overly
sensitive, or can block openings to the sensing chamber and
keep the detector from sensing smoke.
•
Near fresh air inlets or returns or excessively drafty areas.
Air conditioners, heaters, fans, and fresh air intakes and
returns can drive smoke away from smoke detectors, making
the detectors less effective.
Air conditioners, heaters, fans, and fresh air intakes and
returns can drive smoke away from smoke detectors, making
the detectors less effective.
•
In dead air spaces at the top of a peaked ceiling or wall/ceiling
intersect. Dead air may prevent smoke from reaching a detector.
intersect. Dead air may prevent smoke from reaching a detector.
•
Near fluorescent light fixtures. Install detectors at least 10
feet (3 meters) away from such light fixtures.
feet (3 meters) away from such light fixtures.
Figure 8. Recommended Smoke Detector Locations to Avoid Air
Streams with Combustion Particles