I56-3388-002
N200-200-00
NFX-OPT /
NFXI-OPT
95 g
-30°C
70°C
102 mm
51 mm
B501AP
0786-CPD-20646 09 NFX-OPT
0786-CPD-20640 09 NFXI-OPT
Pittway Tecnologica S.r.l,
Via Caboto 19/3,
34147 Trieste, Italy
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FOR MODEL NFX-OPT / NFXI-OPT PHOTO
ELECTRONIC SMOKE SENSOR
GENERAL DESCRIPTION
Models NFX-OPT and NFXI-OPT intelligent photoelectronic sensors are plug-in type
smoke sensors that combine a photoelectronic sensing chamber with addressable
communications. These sensors are designed for open area protection and must only
be connected to control panels that use a compatible proprietary communication
protocol for monitoring and control.
The NFXI-OPT sensor contains an isolator, if installing this version check the panel
documentation for details of how many isolators can be used on a loop.
Two LEDs on each sensor light to provide a local 360
o
visible sensor indication (opera-
tion of LEDs are dependent on panel). Remote LED indicator capability is available as
an optional accessory wired to the standard base terminals (again dependent on panel).
SPECIFICATIONS
Operating Voltage Range:
15 to 32 VDC (15 to 28 for NFXI isolated)
Max. Standby Current (no comm.): 200 µA @24 V and 25
o
C
(comm. LED blink enabled - 5 sec) 300 µA @24 V and 25
o
C
(Read 16 sec. LED blink 8 sec)
220 µA @24 V and 25
o
C
add 50 µA for NFXI Isolated
Max. Alarm Current (LED on):
add 3.5 mA @ 24 V and 25
o
C
Operating Humidity Range:
10% to 93% Relative Humidity, Non-Condensing
Independently tested and certified to: EN54-7: 2000 (and EN54-17: 2005 for NFXI)
WIRING GUIDE
Refer to the installation instructions supplied with the plug-in sensor bases for wiring
details. All bases are provided with terminals for power and an optional Remote
Indicator.
Note 1:
All wiring must conform to applicable local and national codes and regulations.
Note 2:
Verify that all sensor bases are installed and that polarity of the wiring is correct
at each base.
WARNING
Disconnect loop power before installing sensors. Notify proper authorities.
SENSOR INSTALLATION
1. Set the sensor address (see figure 1) by turning the two rotary switches on the
underside of the sensor, selecting a number between 01 and 159. (Note: The number
of addresses available will be dependent on panel capability, check the panel
documentation for information on this). Record the address on the label attached to
the base.
Notifier Ltd., Charles Avenue, Burgess Hill, West Sussex, RH15 9UF, UK
0
8
7
1
2
3
4
5
6
9
0
8
7
1
2
3
4
5
6
9
10
12
13
14
15
X 10
X 1
2. Insert the sensor into the base and rotate it clockwise until it locks into place.
3. After all the sensors have been installed, apply power to the system.
4. Test the sensor as described under
TESTING.
5. Reset the sensor by communication command from the panel.
Tamper-Resistance.
These sensors includes a feature that, when activated, prevents removal of the sensor
from the base without the use of a tool. Refer to the installation instructions for the
sensor base for details of how to use this feature.
CAUTION
Dust covers help to protect units during shipping and when first installed. They
are not intended to provide complete protection against contamination therefore
sensors should be removed before construction, major re-decoration or other
dust producing work is started. Dust covers must be removed before system
can be made operational.
Figure 1: Rotary Address Switches
Figure 2: Cleaning the Sensor
Sensor Cover
Sensing Chamber
Sensing Chamber Cover
and Screen
Cover Removal Tabs
5. Use a vacuum cleaner and/or clean, compressed air to remove dust and debris from
the sensing chamber and sensing chamber cover.
6. Re-install the sensing chamber cover by aligning the square and round holes on the
cover with the square and round pins around the sensing chamber, gently pressing
it home until it slips into place.
7. Re-install the sensor cover. Use the cover removal tabs and LEDs to align the cover
with the sensor. Snap the cover into place.
8. When all sensors have been cleaned, restore power to the loop and test the
sensor(s) as described under
TESTING
.
TESTING
Sensors must be tested after installation and following periodic maintenance. Disable
the zone or system undergoing maintenance to prevent unwanted alarms.
Test the sensors as follows:
Magnet Method
1. Test the sensor by positioning the test magnet (model M02-24-optional) against the
sensor body approximately 2cm from LED 1, indicated by a mark on the sensor
cover as shown in figure 3.
2. Both LED’s on the sensor should latch into alarm within 30 seconds, activating the
control panel.
MAINTENANCE
Before cleaning, disable the system to prevent unwanted alarms:
1. Remove the sensor to be cleaned from the system.
2. Gently release each of the four cover removal tabs that hold the cover in place (see
figure 2) and remove the sensor cover.
3. Vacuum the outside of the screen/chamber cover carefully without removing it.
4. Remove the screen/chamber cover assembly by pulling it straight out.
Smoke Method
1. Using generated smoke, or synthetic smoke aerosol from an approved manufacturer
such as No Climb Products Ltd, subject the sensor to controlled amounts of smoke
in accordance with local codes of practice and manufacturer recommendations.
2. Both LED’s on the sensor should latch into alarm within 30 seconds, activating the
control panel.
After completion of the test notify the proper authorities that the system is operational.
WARNING
LIMITATIONS OF SMOKE SENSORS
Smoke sensors must be used in conjunction with compatible equipment.
Smoke sensors will not sense fires which start where smoke does not reach the
sensors.
A sensor may not detect a fire developing on another level of a building.
Smoke sensors also have sensing limitations. Consideration must be made of the
environment when selecting fire sensors.
Smoke sensors cannot last forever.
Smoke sensors contain electronic parts. Even
though sensors are made to last over 10 years, any of these parts could fail at any
time. Therefore, test your smoke detection system at least semi-annually. Clean and
take care of your smoke sensors regularly. Taking care of the fire detection system you
have installed will significantly reduce your product liability risks.
Test Magnet
LED 1
LED 2
Mark on Cover
Figure 3: Test Magnet Position
ENGLISH
