4098 Smoke Detectors - Simplex 4098 Applications Manual

4098 SMOKE DETECTORS

This section contains specification and mounting information for the smoke
detectors shown in Table 2.
CAUTION: Install the detectors described in these instructions in accordance
with applicable NFPA standards, local codes, and the Authorities
Having Jurisdiction (AHJs). Failure to follow these instructions
may result in failure of the detector to initiate an alarm condition.
Simplex is not responsible for detectors that have been improperly
installed, tested, or maintained.
Limitations of Smoke Detectors: The smoke detectors used with these
bases are designed to activate and initiate emergency action, but will do so only
when used in conjunction with other equipment. They are designed for
installation in accordance with NFPA 72 National Fire Alarm Code 1999.
Smoke detectors will not work without power. AC or DC powered smoke
detectors will not work if the power supply is cut off for any reason.
Smoke detectors will not sense fires when smoke does not reach the detectors.
Smoke from fires in chimneys, in walls, on roofs or on the other side of closed
doors may not reach the smoke detector and alarm it.
A detector may not detect a fire developing on another level of a building. For
this reason, detectors should be located on every level of a building.
Smoke detectors have sensing limitations, too. Ionization detectors are better at
detecting fast, flaming fires than slow, smoldering fires. Photoelectric detectors
sense smoldering fires better than flaming fires. Because fires develop in
different ways, and are often unpredictable in their growth, neither type of
detector is always best, and a given detector may not always provide warning of
a fire. In general, detectors cannot be expected to provide warning for fires
resulting from inadequate fire protection practices, violent explosions, escaping
gases, improper storage of flammable liquids like cleaning solvents, other safety
hazards, or arson.
Smoke detectors cannot last forever. Smoke detectors contain electronic parts.
Even though detectors are made to last for many years, any of these parts could
fail at any time. Therefore, test your smoke detector system per NFPA 72 at
least annually. Clean and take care of your smoke detectors regularly.
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