16
Hush® Control Feature
Smoke alarms are designed to minimize nuisance alarms.
Cigarette smoke will not normally set off the alarm, unless
the smoke is blown directly into the alarm. Combustion
particles from cooking may set off the alarm if the alarm is
located close to the cooking area. Large quantities of
combustible particles are generated from spills or when
broiling. Using the fan on a range hood that vents to the
outside (non-recirculating type) will also help remove
these combustible particles from the kitchen. The Hush®
button is extremely useful in a kitchen area or other areas
prone to nuisance alarms.
The Hush® feature has the capability of temporarily
desensitizing the smoke alarm circuit for about 7 minutes.
This feature is to be used only when a known alarm
condition, such as smoke from cooking, activates the
alarm.
If the alarm does sound, check for fires first. If a fire is
discovered, get out and call the fire department. If no fire
is present, check to see if one of the reasons listed in
Locations to Avoid
may have caused the alarm.
The smoke alarm is desensitized by pushing the Hush®
button on the smoke alarm cover. If the smoke is not too
dense, the alarm will silence immediately
and “chirp” every
30-40 seconds for approximately 7 minutes.
This indicates
that the alarm is in a temporarily desensitized condition.
The smoke alarm will automatically reset after
approximately 7 minutes. If after this period particles of
combustion are still present, the alarm will sound again.
The Hush® feature can be used repeatedly until the air
has been cleared of the condition causing the alarm.
Pushing the Test button on the alarm will end the Hush®
period.
NOTE: Dense smoke will override the Hush® control feature
and sound a continuous alarm.
CAUTION: Before using the alarm Hush® feature, identify the
source of the smoke and be certain a safe condition exists.
O p e r a t i o n
O p e r a t i o n
15
LED Indicators
This alarm is equipped with red and green LED indicators,
each with two modes of operation.
Red LED - Flashing eve ry 30-40 seconds:
Indicates that the
smoke alarm is operating pro p e r l y .
Red LED - Flashing Rapidly:
When the smoke alarm senses
particles of combustion and goes into alarm (constant
pulsating sound), the red LED will flash rapidly (one flash
per second). The rapid flashing LED and pulsating alarm
will continue until the air is cleared. When interconnected,
only the red LED’s of the alarms that are sensing smoke or
are being tested will flash rapidly (originating alarms). All
other units in the interconnect system will sound an alarm,
but their red LED’s will NOT flash rapidly.
G reen LED - Constantly On:
Indicates that the unit is
receiving 120 V AC power.
G reen LED - Flashing:
This unit features an “alarm memory”
to indicate itself as an originating alarm (that sounded and
triggered others in an interconnect system). Once the unit
returns to silence after the occurrence of an alarm, a
flashing green LED marks the unit as an originating alarm
(Image 8). The flashing green LED remains until it is reset
by pushing the Test button.
IMAGE 8
820-0612_RevA_1276_MAN_ENG 11/17/03 9:44 AM Page 14
