Protectowire 2000 FireSystem Spécifications télécharger pdf (Page 53)

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Double Interlock Sprinkler Systems are designed to prevent accidental release of water. When the solenoid is energized, depressur-

ization of the air filled pipes (loss of air) is required to obtain water at the sprinkler heads. This beneficial feature becomes a con-

cern when the system is operating under battery backup power. Should depressurization (loss of air) not occur, the possibility of

being energized and then de-energized due to battery drain, without allowing any waterflow exists. To prevent this situation

CROSS ZONING of the zone detection circuit with a low air pressure alarm circuit is advised. The illustrations below provide

logic and schematic diagrams for typical cross zoning applications utilizing the on-board cross-zoning capabilities of the RS-1. An

alternate means of cross zoning can be achieved by implementing a zone voting module, Option “V”. Please reference the Option

“V” section of this manual for information pertaining to this module.

Upon receipt of an alarm indication from either the detection zone or low air pressure zone, the alarm notification appliance circuits

are activated in conjunction with the zone alarm LED contained on the corresponding detection card. However, the solenoid [coil

supervised and activated via RS-1 (Option “F”) circuitry] is not energized until 2?D8 circuits have been activated. Once both have

been activated, the solenoid will be energized allowing water to be supplied to the sprinkler heads.

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1. Notify the proper local fire department and/or alarm receiving station.

2. Press the system “AL. SIL.” button to silence the alarm condition.

3. Disconnect any and all auxiliary alarm devices (solenoids, system shutdowns, etc.).

4. Clear/Reset all detection devices that are activated.

5. Reset sprinkler system (sprinkler heads, solenoids, re-pressurize sprinkler system with air).

6. Make sure pressure switches have been returned to a normally open (N.O.) state.

7. Press the system “SYS. RST.” switch to clear zoned and common alarm conditions.

8. System should be in a trouble condition due to solenoid disconnection toggle switch, press the “TRO. SIL.” button.

9. Return solenoid disconnect toggle switch to normal (UP) position and reconnect auxiliary alarm devices.

10. The panel should now be in a normal standby mode.

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Note: Terminations shown may differ per system. Reference the system installation

wiring diagram (IWD) supplied with each panel for specific wiring and terminations.

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Protectowire 2000 FireSystem Spécifications Page 53

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