Notifier NFX-OPT Installation And Maintenance Instructions

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