Wiring 2-Wire Smoke Detectors To Zone 1; Compatible 2-Wire Smoke Detectors - ADEMCO VISTA-120 Installation And Setup Manual

Wiring 2-Wire
Smoke Detectors
to Zone 1
Compatible 2-Wire
Smoke Detectors
–20–
Zone 1 has the added capability of supporting 2-wire smoke detectors. This zone
provides enough standby current (2 mA) to power up to sixteen of the smoke
detectors listed on the following page. Each zone provides only enough alarm
current (20 mA) to power one smoke detector in the alarmed state. When
assigned zone type 9, the second entry of a Security Code + OFF sequence at a
keypad will interrupt power to this zone to allow detectors to be reset following
an alarm.
1. Connect 2-wire smoke detectors across zone 1 terminals (10 & 11) as shown
below. Observe proper polarity when connecting the detectors.
2. If an EOL resistor is presently connected across zone 1 terminals, remove it.
The EOL resistors must be connected across the loop wires of each
zone at the last detector.
The alarm current provided by zone 1 will support only one smoke detector in the
alarmed state.
Figure 9: 2-Wire Smoke Detector Connected to Zone 1
You may use up to sixteen 2-wire smoke detectors each on zone listed in the table
below.
DETECTOR TYPE
Photoelectric, plug-in head
Photoelectric w/heat sensor, direct wire
Photoelectric, direct wire
Photoelectric w/heat sensor, direct wire
Photoelectric w/B401B base
Photoelectric w/heat sensor and B401B base
Ionisation, plug-in head
†
Ionisation, direct wire
Ionisation w/B401B base
Photoelectric duct detect. w/DH400 base
Ionisation duct detector w/DH400 base
†
Ionisation, direct wire
Ionisation w/B110LP base
Photoelectric, direct wire
Photoelectric w/heat sensor, direct wire
Photoelectric w/B110LP base
† NOTE: These smoke detectors are Listed for use with the VISTA-120 and are
the only 2-wire smoke detectors that may be used in UL applications.
(+)
2-WIRE
SMOKE DETECTOR
(-)
†
†
†
†
†
†
†
†
†
†
†
†
(+)
10
11 (-)
DEVICE MODEL #
System Sensor 2600EC
System Sensor 2300T
System Sensor 2400
System Sensor 2400TH
System Sensor 2451
System Sensor 2451TH
System Sensor 1600EC
System Sensor 1400
System Sensor 1451
System Sensor 2451
System Sensor 1451DH
System Sensor 1100
System Sensor 1151
System Sensor 2100
System Sensor 2100T
System Sensor 2151