Section 6: Fire Safety; Fire Alarm Operation; Guidelines For Locating Smoke Detectors - DSC PC4020 - V3.3 Manual

6.1 Fire Alarm Operation

The following explains the fire alarm function of this system.
1. Fire Bells Sound
Upon a fire alarm, the bells or sirens will sound. They will pulse on and
off in a programmed pattern. The keypad will display the following:
First Fire Alarm
[Zone Label]
The display will indicate the first fire zone in alarm, followed by any
subsequent fire zones in alarm.
2. Bells Silenced
The fire bells or sirens may automatically silence after a period of time, if
programmed by your installer. To manually silence the fire bells, enter a valid
access code. A valid access code in this case has the Fire Silence user code
option turned on (see Section 2.3 "Change User Code Options" for details).
Once the bells or sirens are silenced, the keypad will display the following:
Fire Bell Has
Been Silenced
Keypad trouble beeps will sound and the keypad Trouble light will be
on. This is a Fire Bell Silence trouble. This trouble cannot be silenced.
3. Reset Fire Zones
In order to clear the Fire Bell Silence trouble and restore the system to
normal operation, enter a valid access code. This will reset all fire zones.
If there is no fire condition once the system has reset, the system will
return to normal operation.
If a fire condition is present once the system has reset, the fire alarm
function will restart (1. Fire Bells Sound).

6.2 Guidelines for Locating Smoke Detectors

Experience has shown that all hostile fires in residential units generate
smoke to a greater or lesser extent. Experiments using typical fires in
residential units indicate that detectable quantities of smoke precede
detectable levels of heat in most cases. For these reasons, smoke detectors
should be installed outside of each sleeping area and on each additional
story of the dwelling.
The following information is for general guidance only. The smoke detector
manufacturer's literature should be consulted for detailed installation
instructions.
On smooth ceilings, detectors may be spaced 9.1m (30 feet) apart as a
guide. Other spacing may be required depending on ceiling height, air
movement, the presence of joists, uninsulated ceilings, etc. Consult
National Fire Alarm Code NFPA 72, CAN/ULS-S553-M86 or other
appropriate national standards for installation recommendations.
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Section 6: Fire Safety