
VISTA-15/VISTA-15CN Installation and Setup Guide
4–2
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.
U
L
In UL installations, only zone 1 may be used as a fire zone. In addition, an ADEMCO Model 610–7
must be used as the end-of-line resistor at the last detector.
The alarm current provided by zone 1 supports only one smoke detector in the alarmed state.
COMPATIBLE 2-WIRE SMOKE DETECTORS
Detector Type
System Sensor
Model No.
Photoelectric w/heat sensor, direct wire 2300TB
Photoelectric, direct wire 2400
Photoelectric w/heat sensor, direct wire 2400TH
Photoelectric 2451 w/B401B base
Photoelectric w/heat sensor 2451TH w/B401B base
Ionization, direct wire 1400
Ionization 1451 w/B401B base
Photoelectric duct detector 2451 w/DH400 base
Ionization duct detector 1451D w/DH400 base H
Low-profile, photoelectric, w/135°F thermal 2100T
Low-profile, ionization type, direct wire 1100
ZONE 1
2-WIRE SMOKE
DETECTOR
UL NOTE:
IN UL INSTALLATIONS, ONLY ZONE 1
MAY BE USED FOR FIRE.
SMOKE
2000 OHMS
2k EOLR
8
9
Figure 8. 2-Wire Smoke Detector Connected to Zone 1
Wiring 4-Wire Smoke/Combustion Detectors on Zones 2-6
The system supports as many 4-wire detectors as can be powered from Auxiliary Power on
the control on zones 2-6. Refer to the detector’s instructions for complete details regarding its
proper installation and operation.
1. Connect 12-volt power for the detectors from Auxiliary Power terminals 4 and 5 (which
interrupts power for fire alarm reset). Observe proper polarity when connecting
detectors.
2. Connect detectors (including heat detectors, if used) across terminals of the zone selected
(zones 2-6 may be used). All detectors must be wired in parallel.
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