DSC WLS916-433 Series Instruções de instalação e de utilização

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Installation and Operating Instructions

Read this instruction sheet thoroughly

before installation and use of the

WLS916-433 Wireless Smoke Detector

Introduction

The WLS916-433 is a wireless photoelectric smoke detector with a

fixed temperature heat detector and an internal piezoelectric

alarm. Three version are available: US version (UL), Canadian ver-

sion (ULC) and an International version (EU).

Piezo Sounder

Operation

Approximately every 7 to 8 seconds the unit tests for a smoke or

heat alarm condition. During this sequence the unit also performs

self diagnostics, and checks for tampers and faults. During normal

operation the LED will flash every 48 seconds and the sounder will

not sound.

Smoke Alarm

The smoke detector has a nominal fixed alarm sensitivity of

approximately 2.5%/ft. obscuration. The smoke detector will go

into alarm when the signal level exceeds the 'alarm' threshold and

automatically restore when the signal level falls below the alarm

'restore' threshold. During an alarm the LED will flash 1/second

and the sounder will sound the the evacuation temporal pattern

(UL, EU) or continuous beeps (ULC).

The smoke detector has a preset warning threshold at 75% of the

alarm threshold. If the signal level stays above this threshold, but

below the alarm threshold, for more than 120 seconds, the detec-

tor will go into the 'warning' state. If the signal level falls below

the early warning 'restore' threshold, the detector will restore to its

normal state automatically. If the signal level rises above the alarm

threshold, the detector will go into alarm. The LED will flash and

the sounder will chirp every 48 seconds when in the warning state.

WLS916-433 Series

Wireless Smoke Detector

LED/Test Button

Alignment Marks

Note: This feature is intended to provide a warning if the environ-

ment is persistently close to the alarm threshold and provide more

time to investigate and either escape or correct the situation.

Smoke - Drift Compensation

The detector automatically compensates for long-term environ-

mentally induced changes to maintain a constant smoke sensitivity.

When the drift compensation has reached its high or low limit of

adjustment, the detector will go into the trouble state.

Heat Alarm

The heat detector will go into alarm when the heat signal level

exceeds the heat alarm threshold (135ºF/57.22ºC); and will auto-

matically restore when the heat signal level falls below the heat

alarm threshold (restore). During an alarm the LED will flash 1/sec-

ond and the sounder will sound the the evacuation temporal pat-

tern (UL, EU) or continuous beeps (ULC).

Batteries

The WLS916-433 is powered by two, 3 V

Do NOT use batteries other than those listed.

The low battery threshold is set so that the batteries will provide

not less than 14 days of operation and at that point the detector

will send a 'low battery' signal. If the battery is still low 7 days after

falling through the low battery threshold, the horn will 'chirp' once

every 48 seconds until battery failure. During the first 7 days after

low battery detection, (non-chirp period), if the detector is tested

or goes into alarm, the horn will 'chirp' once the test or alarm is

restored and remain 'chirping' until battery failure.

Tamper

The removal of the detector from the mounting plate initiates a

'tamper' transmission. The tamper condition is restored after the

detector is mounted on the plate.

Wireless Transmissions

A supervisory message is transmitted at 64 minute intervals (12

minutes in EU models) to the control panel. If the signal is not

received the control panel determines that the detector is missing.

The detector transmits the following:

•

Alarm / Alarm Restore - (heat or smoke alarm). Transmitted

at time of occurrence.

•

Tamper / Tamper Restore - (tamper switch activated) 10

second maximum delay on restore before transmission.

•

Low Battery - (battery voltage falls below threshold). The

batteries are tested & transmitted at the time of a supervisory

or other transmissions.

•

Trouble - (detector fault or sensor compensation limit

reached). Troubles are transmitted at the time of occurrence

(one trouble per supervisory interval).

lithium batteries.