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ALN-V PHOTOELECTRIC SMOKE SENSOR
STANDARD FEATURES
Low profile - only 2.00" high, including base
Simple and reliable device addressing
Automatic compensation for sensor contamination
Built-in fire test feature
Uses the noise-immune Digital Communication
Protocol (DCP), which utilizes interrupts for fast
response to fires
Two built-in power/alarm LEDs
Programmable non-polling LEDs
Non-directional smoke chamber
Vandal resistant security locking feature
APPLICATIONS
The Hochiki ALN-V Photoelectric Smoke Sensor is particularly
suited to detecting optically dense smoke typical of fires
involving materials such as soft furnishings, plastic, foam or
other similar materials which tend to smolder and produce
large visible smoke particles. Hochiki's unique design allows
fast response to flaming fires as well as smoldering fires while
preventing false alarms.
OPERATION
The detection chamber consists of a light-emitting diode
(LED) and photodiode arrangement. The chamber is designed
such that light emitted by the LED cannot normally reach the
photo diode. In the event of fire, particles of smoke enter the
chamber and scatter the light. As the smoke level increases,
the scattering effect increases, causing more light to hit the
photodiode. The chamber contains a unique baffle design
which allows smoke to enter the chamber while preventing
external light from affecting the photodiode. The photodiode
input level is sampled to sense smoke density.
When the smoke density exceeds a preset threshold the
sensor transmits an interrupt to the fire control panel indicat- ing a fire condition. The fire alarm control panel can adjust the
sensor threshold to compensate for contamination.
Up to 127 devices are permitted on each SLC loop. A sensor
address is set by a hand-held programming unit. The sensor
mounts to an electronics-free base and incorporates a locking
mechanism for secure installation. The base provides mount- ing slots, terminals for field wiring and a third contact for a
remote indicator/LED. The sensor incorporates dual LEDs for
easy viewing of sensor status.
SENSOR SPACING
Smoke sensor spacing shall be in compliance with NFPA 72.
For smooth ceilings and in the absence of specific perfor- mance-based design criteria, the distance between smoke
sensors shall not exceed a nominal spacing of 30 ft. (9.1m) or
all points on the ceiling shall have a sensor within a distance
equal to or less than 0.7 times the nominal 30 ft. (9.1m)
spacing. Sensors shall be located within a distance of one-half
the nominal spacing, measured at right angles from all walls
or partitions extending upward to within the top 15 percent of
the ceiling height. For additional instructions see NFPA 72.
S1383
Hochiki America Corporation
7051 Village Drive, Suite 100, Buena Park, CA 90621-2268
Phone: 714-522-2246 Fax: 714-522-2268
Technical Support: 800-845-6692 or technicalsupport@hochiki.com
Find latest revision at www.hochiki.com
F0185 12/2017
PRODUCT LISTINGS
Operating Voltage 24 - 41 VDC
Standby Current 450μA
Alarm Current 540μA
Transmission Method DCP - Digital Communication Protocol
Maximum Humidity 95% RH Non-Condensing
Ambient Operating 32°F to 120°F
Temperature (0°C to 49°C)
Sensitivity Range 0.7-4.0%/FT@300FPM
Duct Application - 0.7-3.86%/FT@2000FPM
Duct Application - 0.7-2.65%/FT@4000FPM
Air Velocity Range 0-4000 fpm
Color & Case Material Bone - ABS Blend
Weight 3.4oz
Bases YBN-NSA-4, HSB-NSA-6,
ASB, SCI-B4, SCI-B6, ASBL
Specifications subject to change without notice. Continued on back.
California State
Fire Marshal
7272-0410:0204
3054858
SPECIFICATIONS
Adobe Systems
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ENGINEERING SPECIFICATIONS
The contractor shall furnish and install Hochiki’s ALN-V (Photoelectric Sensor) as indicated on the plans. The photoelectric
sensor head and twist lock base is UL Listed and it’s compatible with an UL Listed fire alarm control panel.
The base permits direct interchange with the Hochiki AIE-EA ionization type smoke sensor, ALG-V, ALK-V/ALK-V2 photoelectric
type smoke sensors, ATG-EA, ATJ-EA heat sensors and the ACA-V, ACC-V multi-criteria sensors.
The sensitivity of the sensor is capable of being measured by the control panel.
The vandal-resistant, security locking feature shall be used in those areas as indicated on the drawing. The locking feature is
optional and can be implemented when required.
BASES
The Hochiki HSB-NSA-6 and the YBN-NSA-4 mounting bases are electronics free and are a simple rugged design with screw
terminals for wiring connections. A common mounting base allows sensor interchange and maintains loop continuity when
sensors are removed. A simple anti-tamper head locking system is provided which is enabled by removing a small plastic tab on
the back of the sensor. Once locked, the head can be removed using a small diameter screwdriver.
HSB-NSA-6 Base YBN-NSA-4 Base
TYPICAL WIRING DIAGRAMS
NOTE: Fire alarm control panel compatibility is required for DCP products. DCP communications protocol allows system
components (DCP sensors AIE-EA, ALG-V, ACA-V, ACC-V, ALK-V, ALN-V, ATJ-EA and ATG-EA, bases and modules)
Hochiki America Corporation ALN-V Photoelectric Smoke Sensor Specifications subject to change without notice.
ALN-V PHOTOELECTRIC SMOKE SENSOR
UL LISTED
COMPATIBLE
CONTROL
PANEL
UL LISTED
POWER
LIMITED
SUPPLY
UL LISTED
COMPATIBLE
CONTROL
PANEL
UL LISTED
POWER
LIMITED
SUPPLY
HSB-NSA-6
HSB-NSA-6
YBN-NSA-4
*-OPTIONAL WIRING CONFIGURATION FOR REMOTE OUTPUT
*
*
8mA MAX.
OUTPUT
8mA MAX.
OUTPUT
8mA MAX.
OUTPUT
8mA MAX.
OUTPUT