DN-6996:B • 12/07/2011 — Page 1 of 2
NI-100(A)
Intelligent Addressable Ionization
Detector for FireWarden Systems
Addressable
DN-6996:B • A1-300
General
The NI-100(A) addressable, low-profile, plug-in ionization
detector uses a state-of-the-art ionization sensing chamber to
provide open-area protection and is used exclusively with
NOTIFIER’s FireWarden Series addressable Fire Alarm Con-
trol Panels (FACPs). The ionization detector is used to sense
products-of-combustion and report the measured level of such
products to the fire alarm control panel. Since this detector is
addressable, it will help emergency personnel quickly locate a
fire during its early stages, potentially saving precious rescue
time while also reducing property damage. Two LEDs on each
sensor light to provide a local, visible sensor indication.
Remote LED annunciator capability is available as an optional
accessory, PN RA100Z(A)
Features
SLC loop
• Two-wire loop connection.
• Unit uses base for wiring.
Addressing
• Addressable by device.
• Rotary, decimal addressing: 01 – 99 with FireWarden-100-
2, 01 – 50 with FireWarden-50.
Architecture
• Unique single-source, dual-chamber design to respond
quickly and dependably to a broad range of fires.
• Sleek, low-profile design.
• Integral communications and built-in type identification.
• Built-in tamper-resistant feature.
• Removable cover and insect-resistant screen for simple
field cleaning.
Operation
• Withstands air velocities up to 1,200 feet-per-minute (6.1 m/
sec.) without triggering a false alarm.
• Factory preset at 1.5% nominal sensitivity for panel alarm
threshold level.
• Visible LED “blinks” when the unit is addressed (communi-
cating with the fire panel) and latches on in alarm.
Mechanicals
• Sealed against back pressure.
• Direct surface mounting or electrical box mounting.
• Base mounts to: single-gang box, 3.5" (8.89 cm) or 4.0"
(10.16 cm) octagonal box, or 4.0" (10.16 cm) square electri-
cal box (using a plaster ring).
APPLICATIONS
Use ionization detectors in life-safety applications to provide a
broad range of fire-sensing capability, especially fast, flaming
fires. Where smoldering fires are anticipated, a photoelectric
sensor may provide faster response.
CONSTRUCTION
These detectors are constructed of off-white plastic. NI-100(A)
plug-in, low-profile smoke detectors are designed to commer-
cial standards and offer an attractive appearance.
Installation
NI-100(A) plug-in detectors use a detachable mounting base
to simplify installation, service and maintenance.
Mount base (all base types) on an electrical backbox which is
at least 1.5" (3.81 cm) deep. For a chart of compatible junction
boxes, see DN-60054.
NOTE: Because of the inherent supervision provided by the SLC
loop, end-of-line resistors are not required. Wiring “T-taps” or
branches are permitted for Style 4 (Class B) wiring.
Operation
Each NI-100(A) uses one of 99 possible addresses on the
FireWarden-100-2 or one of 50 possible addresses on the
FireWarden-50 Series Signaling Line Circuit (SLC). It
responds to regular polls from the system and reports its type
and status.
The NI-100(A) addressable ionization sensor’s unique unipolar
chamber responds quickly and uniformly to a broad range of
smoke conditions and can withstand wind gusts up to 1,200
feet-per-minute (6.01 m/sec.) without sending an alarm level
signal. Because of its unipolar chamber, the NI-100(A) is
approximately two times more responsive than most ionization
sensors. This makes it a more stable detector.
Specifications
Voltage range: 15 – 32 VDC (peak).
Standby current: 300 μA @ 24 VDC.
LED current: 6.5 mA @ 24 VDC (latched “ON”).
Air velocity: 1,200 ft./min. (6.1 m/sec.) maximum.
Size: 2.0" (51 mm) high; base determines diameter.
– B210LP(A): 6.1" (15.5 cm) diameter.
– B501(A): 4.1" (10.4 cm) diameter.
– B200SR(A): 6.875" (17.46 cm) diameter.
– B224RB(A): 6.2" (15.748 cm) diameter.
NI-100(A) in B210LP(A) Base
B210-1951.jpg
(4 pages)
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