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Section 4. BASIC HARD-WIRED ZONES 1–8

This section provides general information for the hard-wired zones in the system, plus

specific instructions for installing 2-wire smoke detectors, 4-wire smoke/combustion

detectors, and 2-wire latching type glass break detectors.

Installing the Hard-Wired Zones

Common Characteristics for Zones 1–8

• EOLR supervised zones supporting both open circuit and closed circuit

devices

• As many 4-wire smoke detectors as can be powered from Aux Power on the

control (zones 2–7)

• Programmable for 10, 350, or 700 msec response

• 350 msec (default) should be used for most standard contacts. For

vibration type contacts, 10 msec is more suitable

Wiring Burglary and Panic Devices To Zones 1–8

1. Connect sensors/contacts to the hard-wired zone terminals (8 through 20).

See the Summary of Connections diagram .

2. Connect closed circuit devices in series in the high (+) side of the loop. The

EOL resistor must be connected in series with the devices, following the

last device. See the Summary of Connections diagram.

3. Connect open circuit devices in parallel across the loop. The 2,000 ohm

EOLR must be connected across the loop wires at the last device.

If the EOLR is not at the end of the loop, the zone will not be properly

supervised, and the system may not respond to an open circuit on the zone.

High Resistance Supervision on Hard-Wired Zones 2–8

• Special supervision in the control senses high resistance on hard-wired

zone loops 2–8, causing a warning “CHECK” display with the affected zone

number to occur when the system is in the disarmed state. The system

cannot be armed when this display is present. If the system is in the

armed state when the high resistance condition occurs, no display will

take place until the system is disarmed.

Wiring 2-Wire Smoke Detectors To Zone 1

1. Connect 2-wire smoke detectors across zone 1 terminals 8 (+) and 9 (–).

Observe proper polarity when connecting the detectors.

2. If an EOL resistor is presently connected across zone 1 terminals, remove

it. The EOL resistor must be connected across the loop wires at

the last detector.

In UL installations, only zone 1 may be used as a Fire zone. In addition, an

Ademco Model 610–7 must be used as an End-of-Line resistor at the last

detector.

The alarm current provided by zone 1 will support only one smoke detector in

the alarmed state.

“Verify” Operation of

2-Wire Smoke Detectors

in Zone 1

The control panel will “verify” any alarm by resetting the smoke detectors

after the first alarm trigger, and then waiting 90 seconds for a second alarm

trigger. If the smoke detector or thermostat does not trigger again, the

control will disregard the first trigger, and no alarm signal will occur. This

feature eliminates false alarms due to electrical or physical transients.

This feature is available only on units that report to the downloader as Rev

4 or higher.

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Datacom Systems D56 Guía para resolver problemas Pagina 17

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