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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
Wiring Burglary and Panic Devices To Zones 1–8
High Resistance Supervision on Hard-Wired Zones 2–8
Wiring 2-Wire Smoke Detectors To Zone 1
U L
ÒVerifyÓ Operation of
2-Wire Smoke Detectors
in Zone 1
¥ Can be assigned to any partition
¥ 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 2Ð7)
¥ 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
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 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.
¥ Special supervision in the control senses high resistance on hard-wired
zone loops 2Ð8, causing a warning ÒCHECKÓ 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.
1. Connect 2-wire smoke detectors across zone 1 terminals 8 (+) and 9 (Ð).
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 610Ð7 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.
The control panel will ÒverifyÓ 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.
–17–
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