ADEMCO VISTA-100, Installation Instructions Manual

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Auxiliary power to 4-wire smoke detectors is not automatically reset after an
alarm and therefore must be momentarily interrupted using the built-in auxiliary
relay as described below. This allows the detectors to be reset via the second
entry of a User Code + OFF sequence. Field 3*61 (Aux Relay Function) must be
programmed as a 2 .
1. Connect 12 volt power for the detectors as follows: Wire the [+] side of
Auxiliary Power (Terminal 10) to the N.C. contact of the Aux. Relay (Terminal
9). Wire the Pole of the Aux Relay (Terminal 8) to the [+] Power side of the
smoke detector. Connect the [-] side of the smoke detector to [-] Aux. Power
(Terminal 12). Observe proper polarity when connecting detectors (see Figure
7).
UL
Power to 4-wire smoke detectors must be supervised with an EOL device (use a
System Sensor A77-716B EOL relay module connected as shown).
12
+
-
VISTA-100
CONTROL
PANEL
ZONE
TERMINALS
-
+
-
+
•
•
EOL
POWER
SUPERVISION
RELAY
MODULE
A77-716B
•
•
2000
Ω
EOLR
-
+
4-WIRE SMOKE
DETECTORS
+
-
HEAT
DETECTOR
9
10
11
8
7
SHOWN POWERED.
RELAY OPENS WHEN
POWER IS LOST.
Figure 7: 4-Wire Smoke Detector Connections (Zones 1-8)
2. Connect detectors (including heat detectors, if used) across terminals of
the zone selected. All detectors must be wired in parallel. Remove the
2000 ohm EOL resistor if connected across the selected zone terminals.
You must connect the EOL resistor across the loop wires at the last
detector.
Compatible 4-Wire Smoke Detectors
Use any UL listed 4-wire smoke detector which is rated for 10-14VDC operation
and which has alarm reset time not exceeding 6 seconds. Some compatible 4-
wire smoke detectors are listed below.
Photoelectric, direct wire System Sensor 2412
Photoelectric w/heat sensor, direct wire System Sensor 2412TH
Ionization, direct wire System Sensor 1412
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