Honeywell VISTA-128BP - Figure 3-10: 2-Wire Smoke Detector on Zone 1

Section 3 - Installing the Control
3-7
Using 2-Wire Smoke Detectors on Zone 1
Zone 1 can support up to 16 2-wire smoke detectors.
The alarm current on zone 1 supports only one
smoke detector in the alarmed state.
Compatible 2-Wire Smoke Detectors
DETECTOR TYPE DEVICE MODEL #
Photoelectric, direct-wire System Sensor 2400
Photoelectric w/heat sensor, direct-wire System Sensor 2400TH
Photoelectric w/B401B base System Sensor 2451
Photoelectric w/heat sensor & B401B System Sensor 2451TH
Ionization, direct-wire System Sensor 1400
Ionization w/B401B base System Sensor 1451
Photoelectric duct detect (DH400 base) System Sensor 2451
Photoelectric duct detect (DH400 base) System Sensor 2451
Ionization duct detector (DH400 base) System Sensor 1451DH
Ionization, direct-wire System Sensor 1100
Ionization w/B110LP base System Sensor 1151
Photoelectric, direct-wire System Sensor 2100
Photoelectric w/heat sensor, direct-wire System Sensor 2100T
Photoelectric w/B110LP base System Sensor 2151
U
L
These smoke detectors are UL Listed for use
with the VISTA-128BP/VISTA-250BP and are
the only 2-wire smoke detectors that may be
used.
Wiring 2-Wire Smoke Detectors to Zone 1
2K EOL resistors must be used on fire zones
and must be connected across the loop wires
of each zone at the last detector.
To wire 2-wire smoke detectors to zone 1, perform the
following steps:
Step Action
1 Select up to 16 2-wire smoke detectors from
the list of compatible detectors.
2 Connect 2-wire smoke detectors across zone
1 terminals (10 and 11) as shown in Figure
3-10. Observe proper polarity when
connecting the detectors.
3 Connect the EOL resistor at the last detector
in the loop across the zone 1 terminals. The
EOL resistor must be connected across
the loop wires at the last detector.
2k EOLR
ZONE 1
SMOKE
(+)
(-)
2-WIRE SMOKE
DETECTOR
10
11
(+)
(-)
Figure 3-10: 2-Wire Smoke Detector on Zone 1
Using 4-Wire Smoke Detectors on Zones 1-8
You may use as many 4-wire smoke detectors as can
be powered from the panel's Auxiliary Power output
without exceeding the output's rating (750mA).
• NFPA limits the number of 4-wire smoke
detectors to 18 per zone.
• Auxiliary power to 4-wire smoke detectors is
not automatically reset after an alarm, and
therefore must be momentarily interrupted
using either the J7 smoke detector reset
output trigger or a 4204 Relay Module.
Compatible 4-Wire Smoke Detectors
Use any UL Listed 4-wire smoke detector that is rated
for 10-14VDC operation and that has alarm reset time
not exceeding 6 seconds. Some compatible 4-wire
smoke detectors are listed below.
Detector Type Detector Model #
Photoelectric, direct wire System Sensor 2412
Photoelectric w/heat
sensor, direct wire
System Sensor 2412TH
Ionization, direct wire System Sensor 1412
Wiring 4-Wire Smoke Detectors
U
L
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 in
Figure 3-11 ).
To wire 4-wire smoke detectors to zones 1-8, perform
the following steps:
Step Action
1 Select 4-wire smoke detectors (see list of
compatible detectors shown previously).
2 Connect detectors (including heat detectors,
if used) across terminals of the zone
selected. All detectors must be wired in
parallel. See Figure 3-11.
NOTE: If you are using the J7 output
trigger to reset the smoke detectors, refer to
Smoke Detector Reset on page 3-20 later in
this section for the wiring instructions.
3 Connect the EOLR at the last detector in
the loop across the zone’s terminals. You
must connect the EOLR across the loop
wires at the last detector.
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