Wheelock MT4-12-LS Guía para resolver problemas descargar pdf (Pagina 48)

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Type 17

Fire Waterflow Alarm

• Provides a fire alarm when zone is shorted for longer than the time

programmed in field *78 delay time setting. The combined sensor and

program field *78 delay must not exceed 90 seconds.

• Provides either a trouble on an open circuit (field *32=0) or a supervisory

on open circuit (field *32=1).

• Usually assigned to a zone containing a fire sprinkler waterflow sensor.

• Bell output may be programmed to remain latched on alarm or to restore

when zone restores (see field *76).

Type 18

Fire Sprinkler

Supervisory

• Provides a supervisory indication when a zone is shorted for longer than

the time programmed in field *78 delay time setting when delay is enabled

in field *57 . The combined sensor and program field *78 delay must not

exceed 90 seconds.

• Provides either a trouble on an open circuit (field *32=0) or a supervisory

on an open circuit (field *32=1).

• No bell output is is provided.

• Usually assigned to a zone containing fire sprinkler supervisory sensors

such as Post-Indicator-Value sensors.

• Assigned to a zone that is wired to a FACP supervisory contact

Type 19

24-Hr. Trouble

• Provides a trouble response on an open or short circuit, and on system zone

faults.

• Usually assigned to system zones such as Zone 10 (earth ground fault) and

Zone 11 (main dialer fault).

• Assigned to a zone that is wired to a FACP trouble contact

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Wheelock MT4-12-LS Guía para resolver problemas Pagina 48