Aritech 1X-F Series User manual

1X-F Series Operation
Manual
P/N 501-415003-2-50 • ISS 14JUN22

Copyright
©
2022 Carrier. All rights reserved.
Trademarks and
patents
CleanMe and the
1X-F Series name and logo are trademarks of
Carrier
.
Other trade names used in this
document may be trademarks or
registered trademarks of the manufacturers or vendors of the
respective products.
Manufacturer
Carrier Manufacturing Poland
Spółka Z o.o.
Ul. Kolejowa 24
, 39-100 Ropczyce, Poland.
Authorized EU manufacturing
representative:
Carrier Fire & Security B.V., Kelvinstraat 7, 6003 DH Weert,
Netherlands.
Version
REV
05. This document applies to 1X-F Series control panels with
software version
2.3 or later.
C
onformity
European Union
directives
2014/30/EU (EMC Directive). Hereby, Carrier declares that this
device is in
compliance with the essential requirements and other
relevant provisions of Directive 2014/30/EU.
2012/19/EU
(WEEE Directive): Products marked with this symbol
cannot be disposed of as unsorted municipal waste in the European
Union. For proper recycling, return this product to your local supplier
upon the purchase of equivalent new equipment, or dispose of it at
designa
ted collection points. For more information see:
recyclethis.info
.
2006/66/EC (
Battery Directive): This product contains a battery that
cannot be disposed of as unsorted municipal waste in the European
Union
. See the product documentation for specific battery
information. The battery is marked with this symbol, which may
include lettering to indicate cadmium (Cd), lead (Pb), or mercury
(Hg). For proper recycling, return the battery to your supplier or to a
de
signated collection point. For more information see:
recyclethis.info
.
Contact information
and product
documentation
For contact information or to download the latest product
documentation, visit
firesecurityproducts.com.

1X-F Series Operation Manual i
Content
Important information ii
Limitation of liability ii
Product warnings and disclaimers ii
Advisory messages iii
Introduction 1
Product range 1
Operating modes 1
Sounder and fire routing delays 2
Control panel overview 3
User interface for two- and four-zone control panels 3
User interface for eight-zone control panels 4
Operator controls and indicators 5
Audible indicators 9
Summary of status indications 9
Control panel operation 13
User levels 13
Public user level operation 14
Operator user level operation 17
Maintenance 25
Regulatory information 26

ii 1X-F Series Operation Manual
Important information
Limitation of liability
To the maximum extent permitted by applicable law, in no event will Carrier be
liable for any lost profits or business opportunities, loss of use, business
interruption, loss of data, or any other indirect, special, incidental, or
consequential damages under any theory of liability, whether based in contract,
tort, negligence, product liability, or otherwise. Because some jurisdictions do not
allow the exclusion or limitation of liability for consequential or incidental
damages the preceding limitation may not apply to you. In any event the total
liability of Carrier shall not exceed the purchase price of the product. The
foregoing limitation will apply to the maximum extent permitted by applicable law,
regardless of whether Carrier has been advised of the possibility of such
damages and regardless of whether any remedy fails of its essential purpose.
Installation in accordance with this manual, applicable codes, and the instructions
of the authority having jurisdiction is mandatory.
While every precaution has been taken during the preparation of this manual to
ensure the accuracy of its contents, Carrier assumes no responsibility for errors
or omissions.
Product warnings and disclaimers
THESE PRODUCTS ARE INTENDED FOR SALE TO AND INSTALLATION BY
QUALIFIED PROFESSIONALS. CARRIER FIRE & SECURITY B.V. CANNOT
PROVIDE ANY ASSURANCE THAT ANY PERSON OR ENTITY BUYING ITS
PRODUCTS, INCLUDING ANY “AUTHORIZED DEALER” OR “AUTHORIZED
RESELLER”, IS PROPERLY TRAINED OR EXPERIENCED TO CORRECTLY
INSTALL FIRE AND SECURITY RELATED PRODUCTS.
For more information on warranty disclaimers and product safety information,
please check https://firesecurityproducts.com/policy/product-warning/ or scan the
QR code:

1X-F Series Operation Manual iii
Advisory messages
Advisory messages alert you to conditions or practices that can cause unwanted
results. The advisory messages used in this document are shown and described
below.
WARNING: Warning messages advise you of hazards that could result in injury
or loss of life. They tell you which actions to take or to avoid in order to prevent
the injury or loss of life.
Caution: Caution messages advise you of possible equipment damage. They tell
you which actions to take or to avoid in order to prevent the damage.
Note: Note messages advise you of the possible loss of time or effort. They
describe how to avoid the loss. Notes are also used to point out important
information that you should read.

iv 1X-F Series Operation Manual

1X-F Series Operation Manual 1
Introduction
This is the operation manual for the 1X-F Series fire alarm control panels. Read
these instructions and all related documentation entirely before operating this
product.
Product range
The 1X-F Series includes the models shown below.
Table 1: 1X-F Series models
Model
Description
1X
-F2 Two-zone fire alarm control panel
1X
-F4 Four-zone fire alarm control panel with fire routing
1X
-F8 Eight-zone fire alarm control panel with fire routing
Fire routing on the four- and eight-zone models is not available for all operating
modes. For more information, see “Sounder and fire routing delays” on page 2.
Operating modes
Supported operating modes are shown in the table below. The default operating
mode is EN 54-2.
Table 2: Operating modes
Operating mode
Region
EN 54
-2 (default) European Union
EN 54
-2 Evacuation European Union (Spain)
EN 54
-2 Scandinavia European Union (Scandinavia)
BS 5839
-1 United Kingdom
NBN
S 21-100 Belgium
NEN 2535
The Netherlands
The choice of operating mode used depends on your location and the specific
regional requirements of your fire alarm system.
As there is no visual indication of the active operating mode, your installation or
maintenance contractor should provide full details of your configuration.

2 1X-F Series Operation Manual
Sounder and fire routing delays
Sounder and fire routing delays are not available for all operating modes. See the
table below for delay availability for each operating mode.
Table 3: Sounder and fire routing delays
Operating mode
Sounder delay Fire routing delay Extended fire routing
delay
EN 54
-2 Yes Yes Yes
EN 54
-2 Evacuation Yes No No
EN 54
-2 Scandinavia Yes Yes Yes
BS 5839
-1 Yes No No
NBN
S 21-100 Yes
(evacuation sounders)
Yes
(warning sounders)
No
NEN 2535
No Yes Yes
Note: Fire routing is not available on any two-zone control panel.

1X-F Series Operation Manual 3
Control panel overview
This topic provides an introduction to the control panel interface, operator
controls, and indicators.
User interface for two- and four-zone control panels
Figure 1: User interface for two- and four-zone control panels
1
. Zone buttons and LEDs (Z1, Z2, etc.)
2
. Supply LED
3
. General Fault LED
4
. General Fire Alarm LEDs
5
. Sounder Fault/Disable/Test button and LED
6
. Sounder Delay button and LED [2]
7
. Networking Fault LED
8
. Service Detector LED [2]
9
. Expansion I/O Fault/Disabled LED
10
. General Disable button and LED
11. General Test button and LED
12. Configuration controls
13. Reset button and LED
14. Panel Silence button and LED
15. Sounder Start/Stop button and LED [2]
16. System Fault LED
17. Out of Service LED
18. Earth Fault LED
19. Supply Fault LED
20. Fire Routing Delay button and LED [1][2]
21. Fire Routing ON/ACK and
Fault/Disable/Test button and LEDs [1][2]
Notes
[1]
Two-zone control panels do not include fire routing or warning sounders for NEN 2535.
[2]
Regional variants include changes to interface buttons and LEDs as shown in Table 4 on
page 4.

4 1X-F Series Operation Manual
User interface for eight-zone control panels
Figure 2: User interface for eight-zone control panels
1
. Zone buttons and LEDs (Z1, Z2, etc.)
2
. Supply LED
3
. General Fault LED
4
. General Fire Alarm LEDs
5
. Sounder Fault/Disable/Test button and LED
6
. Sounder Delay button and LED [2]
7
. Networking Fault LED
8
. Service Detector LED [2]
9
. Expansion I/O Fault/Disabled LED
10
. General Disable button and LED
11. General Test button and LED
12. Configuration controls
13. Reset button and LED
14. Panel Silence button and LED
15. Sounder Start/Stop button and LED [2]
16. System Fault LED
17. Out of Service LED
18. Earth Fault LED
19. Supply Fault LED
20. Fire Routing Delay button and LED [1][2]
21. Fire Routing ON/ACK and
Fault/Disable/Test button and LEDs [1][2]
Notes
[1]
Two-zone control panels do not include fire routing or warning sounders for NEN 2535.
[2] Regional variants include changes to interface buttons and LEDs as shown in Table 4 below
Table 4: Regional variants of interface buttons and LEDs
Item
EN 54 NEN 2535 NBN S 21-100
6
Sounder Delay Fire Protection Fault/Disable/Test Evacuation Sounder Delay
8
Service Detector Fault Warning Fault/Disabled Service Detector
15
Sounder Start/Stop Sounder Start/Stop Evacuation Start/Stop
20
Fire Routing Delay Fire Routing Delay Warning Sounder Delay
21
Fire Routing ON/ACK Fire Routing ON/ACK Warning Sounders Start/Stop

1X-F Series Operation Manual 5
Operator controls and indicators
The following table gives an overview of the control panel operator controls and
indicators. Item numbers refer to Figure 1 on page 3 and Figure 2 on page 4.
Operational features described here may not be available to all users. Further
information on control panel operation and access restrictions can be found in
the topic “Control panel operation” on page 13.
Table 5: Operator controls and LED indicators
Item
Control/LED LED colour Description
1
Zone buttons and
LEDs
Red/Yellow Disables or tests a zone (when pressed with the
General Disable or General Test button).
A red LED indicates an alarm in the
corresponding zone.
A flashing red LED indicates that the fire alarm
was activated by a detector. A steady red LED
indicates that the fire alarm was activated by a
manual call point.
A yellow LED indicates a fault, test, or
disablement in the corresponding zone.
A flashing yellow LED indicates a fault. A steady
yellow LED indicates that the zone is disabled or
is being tested.
2
Supply LED Green Indicates that the system is powered up correctly.
3
General Fault LED Yellow
Indicates a fault. The corresponding zone, device,
or function fault LED also flashes.
4
General Fire Alarm
LEDs
Red Indicates a fire alarm.
Flashing LEDs indicate that the fire alarm was
activated by a detector.
Steady LEDs indicate that the fire alarm was
activated by a manual call point.
The corresponding zone alarm LED indicates the
source of fire alarm.
5
Sounder
Fault/Disable/Test
button and LED
— or —
Evacuation
Fault/Disable/Test
button and LED for
NBN S 21-100)
Yellow Disables or tests sounders (when pressed with
the General Disable or General Test button).
A flashing LED indicates a fault with the sounders
or evacuation sounders. A steady LED indicates
that the sounders or evacuation sounders are
disabled or are being tested.

6 1X-F Series Operation Manual
Item
Control/LED LED colour Description
6
Sounder Delay
button and LED
— or —
Evacuation Sounder
Delay for
NBN S 21-100
Yellow Enables or disables a previously configured
sounder or evacuation sounder delay. Cancels a
delay as it counts down and activates sounders or
evacuation sounders.
A steady LED indicates that a sounder or
evacuation sounder delay is configured and
enabled. A flashing LED indicates that a sounder
or evacuation sounder delay is counting
(sounders will be activated when the configured
delay elapses).
— or —
Fire Protection
Fault/Disable/Test
button and LED for
NEN 2535
The button has no function.
A flashing LED indicates a fault. A steady LED
indicates that the feature is disabled or is being
tested.
7
Networking Fault
LED
Yellow The control panel is not connected to a fire
network if this LED is off.
A flashing LED every 10 seconds indicates the
control panel is connected to a fire network with
no faults.
A steady LED for 30 seconds indicates the control
panel is showing local information.
A continuous steady LED indicates the control
panel connection to the network has been
disabled.
A flashing LED indicates network faults.
8
Service Detector
LED
Yellow Indicates a fault of detectors requiring service
(only for detectors supporting CleanMe
functionality).
For zone information, press and hold the Panel
Silence button – a flashing yellow Zone LED
indicates a zone with a detector that requires
service.
— or —
Fault Warning
Fault/Disabled LED
for NEN 2535
A flashing LED indicates a wiring fault of the fault
warning output. A steady LED indicates that the
feature is disabled.
9
Expansion I/O
Fault/Disabled LED
Yellow Indicates that an installed expansion board has a
fault or is disabled.
A flashing LED indicates a fault with an expansion
board. A steady LED indicates that an expansion
board is disabled.
10
General Disable
button and LED
Yellow Disables a zone, sounders, fire routing, fire
protection and fault warning (NEN 2535 only), or
expansion I/O boards (when pressed with the
corresponding button).
A steady General Disable LED and the
corresponding zone, sounders, or fire routing
Fault/Disable/Test LED indicates a disablement.

1X-F Series Operation Manual 7
Item
Control/LED LED colour Description
11
General Test button
and LED
Yellow Tests a zone, sounders, fire protection (NEN
2535 only) or fire routing (when pressed with the
corresponding button).
A steady General Test LED and the
corresponding zone, sounders, or fire routing
Fault/Disable/Test LED indicates a test.
12
Numeric keypad
and Enter button
N/A Used to enter the operator user level password.
The Enter button is also used to disable or test
selected features (when pressed with the General
Disable or Test button).
For control panels in a network with repeater
functionality, the Enter button is used to show
control panel local events.
13
Reset button Yellow Resets the control panel and clears all current
system events (except expansion I/O board fault
communication).
A steady LED indicates that operator user level
is
active (see “User levels” on page 13).
14
Panel Silence
button and LED
Yellow Silences the control panel buzzer and
acknowledges all current events.
A steady LED indicates that all current events
were acknowledged.
15
Sounder Start/Stop
button and LED
Red
The LED indicates what happens when the button
is pressed:
If the LED is on (flashing or steady), pressing the
button silences the fire sounders.
If the LED is off, pressing the button activates the
sounders (if the control panel status and
operating mode allow manual activation of
sounders).
The LED also indicates the status of the
sounders:
• Steady indicates that sounders are active (or
will be activated shortly)
• Flashing indicates that a delay is counting
(sounders are activated when the configured
delay elapses or when the delay is cancelled)
• Off indicates that the sounders are off (or will
be deactivated shortly)
Notes
To prevent the immediate silencing of sounders
when an alarm is first reported, the Sounders
Start/Stop button may be temporarily prevented
when a configured fire sounder delay is counting
down.
Depending on the size of your installation, the
processing of commands to start or stop
sounders may take a few seconds to travel
through the system. For example, the LED may
be steady before the sounders are audible.

8 1X-F Series Operation Manual
Item
Control/LED LED colour Description
— or —
Evacuation
Start/Stop button
and LED for
NBN S 21-100
Activates or deactivates evacuation sounders.
A steady LED indicates that evacuation sounders
are active.
16
System Fault LED Yellow Indicates a control panel processor failure.
17
Out of Service LED Yellow Indicates that control panel power supply
conditions put fire detection zones and inputs out
of service.
Other system functions remain operational
(including networking and output activation).
A steady yellow LED indicates that there is no
mains power and the battery power is insufficient.
A flashing yellow LED indicates that the mains
power is insufficient and there is no battery
power.
18
Earth Fault LED Yellow Indicates an earth isolation fault.
19
Supply Fault LED Yellow Indicates a fault with the power supply.
A flashing LED indicates a battery or battery fuse
fault. A steady LED indicates a mains or mains
fuse fault.
20
Fire Routing Delay
button and LED
— or —
Warning Sounder
Delay for
NBN S 21-100
Yellow Enables or disables a previously configured fire
routing or warning sounders delay. (For warning
sounders, this cancels a delay as it counts down
and activates sounders.)
A steady LED indicates that a fire routing or
warning sounders delay is configured and
enabled. A flashing LED indicates that a fire
routing or warning sounders delay is counting (fire
routing will be activated when the configured
delay elapses).
21
Fire Routing
ON/ACK button and
LED
Red Cancels a previously configured delay and
activates fire routing.
A flashing LED indicates that fire routing has
been activated. A steady LED indicates that the
fire routing signal has been acknowledged by the
remote monitoring equipment.
— or —
Warning Start/Stop
button and LED for
NBN S 21-100
Activates or deactivates warning sounders.
A steady LED indicates that warning sounders
are active.
2
2 Fire Routing
Fault/Disable/Test
button and LED
— or —
Warning
Fault/Disable/Test
button and LED for
NBN S 21-100
Yellow Indicates that fire routing is in a fault condition, is
disabled, or is being tested.
A flashing LED indicates a fault. A steady LED
indicates that the function is disabled or is being
tested.

1X-F Series Operation Manual 9
Audible indicators
The control panel buzzer acts as an audible indicator to highlight system events.
It can sound a continuous tone or an intermittent tone.
Table 6: Audible indications
Indication
Description
The
control panel buzzer sounds
continuously
Indicates a fire alarm or a system fault
The
control panel buzzer sounds
intermittently
Indicates all other faults
Summary of status indications
This section includes a summary of the default control panel status indications.
Standby (normal status)
Standby, or normal status, is indicated as follows:
• Supply LED: On steady.
• Sounder or Evacuation Delay LED: On steady if a sounder or evacuation
delay was enabled.
• Fire Routing or Warning Delay LED: On steady if a fire routing or warning
delay was enabled.
• Control panel buzzer: Off.
Fire alarm
Fire alarm status is indicated as follows:
• General Fire Alarm LEDs: Flashing if the alarm was activated by a detector.
Steady if the alarm was activated by a manual call point.
• Zone LED: Flashing red if the alarm was activated by a detector. Steady red if
the alarm was activated by a manual call point. Shows which zones are in
alarm.
• Sounder Delay LED: On steady if a sounder delay was enabled. Flashing
while the delay is active (counting down). On steady when the sounders are
active (sounding).
• Fire Routing Delay LED: Flashing slow when a fire routing delay is active
(counting). Flashing fast when an extended fire routing delay is active
(counting).
• Fire Routing ON/ACKd LED: Flashing when fire routing is activated. On
steady when the fire routing signal has been acknowledged by the remote
monitoring equipment.
• Control panel buzzer: Sounding continuous.

10 1X-F Series Operation Manual
Alarms activated by a manual call point always take priority over alarms activated
by a detector. If an alarm is activated by both devices, the Fire Alarm LEDs and
Zone alarm (red) LEDs are on steady.
For NBN S 21-100 operation, additional indicators are:
• Evacuation Delay LED: On steady if an evacuation delay was enabled.
Flashing while the delay is active. On steady when evacuation sounders are
active (sounding).
• Warning Delay LED: Flashing slow when a warning sounders delay is active
(counting).
• Warning Start/Stop LED: On steady when sounders are active (sounding).
Evacuation
This function is available only for EN 54-2 evacuation and NBN S 21-100
operation.
In evacuation status, the panel activates the sounders without detection of a
zone alarm. The status is indicated as shown below.
For EN 54-2 evacuation and NBN S 21-100 operation:
• General Fire Alarm LEDs: On steady.
• Sounders: Active (sounding).
• Sounder Start/Stop LED: On steady.
• Control panel buzzer: Sounding continuous.
For NBN S 21-100 operation, additional indicators are:
• Evacuation Start/Stop LED: On steady when the evacuation sounders are
active (sounding).
• Warning Start/Stop LED: On steady when warning sounders are active
(sounding).
Fault
General fault indication:
• General Fault LED: Flashing.
• Corresponding zone, function, or device LED: Flashing yellow.
• Control panel buzzer: Sounding intermittent.
Mains power fault and mains fuse fault indication:
• General Fault LED: Flashing.
• Supply Fault LED: On steady.
• Control panel buzzer: Sounding intermittent.

1X-F Series Operation Manual 11
Battery power and battery fuse fault indication:
• General Fault LED: Flashing.
• Supply Fault LED: Flashing.
• Control panel buzzer: Sounding intermittent.
Earth fault indication
• General Fault LED: Flashing.
• Earth Fault LED: On steady.
• Control panel buzzer: Sounding intermittent.
Note: Contact your installation or maintenance contractor to investigate the
cause of all reported faults.
Disablements
Disabled zones are indicated as follows:
• General Disable LED: On steady.
• Corresponding Zone LED: On steady yellow.
• Control panel buzzer: Off.
Disabled sounders (or evacuation for NBN S 21-100) are indicated as follows:
• General Disable LED: On steady.
• Sounder LED: On steady yellow.
• Control panel buzzer: Off.
Disabled fire routing (or warning for NBN S 21-100) is indicated as follows:
• General Disable LED: On steady.
• Fire Routing LED: On steady yellow.
• Control panel buzzer: Off.
Disabled expansion boards are indicated as follows:
• General Disable LED: On steady.
• I/O LED: On steady yellow.
• Control panel buzzer: Off.
Disabled fire protection is indicated as follows:
• General Disable LED: On steady.
• Fire Protection LED: On steady yellow.
• Control panel buzzer: Off.

12 1X-F Series Operation Manual
Disabled fault warning is indicated as follows:
• General Disable LED: On steady.
• Fault Warning LED: On steady yellow.
• Control panel buzzer: Off.
Tests
A zone test is indicated as follows:
• General Test LED: On steady.
• Corresponding Zone LED: On steady yellow.
• Control panel buzzer: Off.
A sounder test (or evacuation test for NBN S 21-100) is indicated as follows:
• General Test LED: On steady.
• Sounder LED: On steady yellow.
• Control panel buzzer: Off.
A fire routing test (or warning test for NBN S 21-100) is indicated as follows:
• General Test LED: On steady.
• Fire Routing On/Ack LED: On steady yellow.
• Control panel buzzer: Off.
A fire protection test is indicated as follows (NEN 2535 only):
• General Test LED: On steady.
• Fire Protection LED: On steady yellow.
• Control panel buzzer: Off.
Out of service
The control panel is out of service when there is insufficient or no mains or
battery power. Zone and input detection does not operate, but the rest of the
system is operational. In this state, the control panel may receive network events
which activate its outputs.
Out of service is indicated as follows:
• Out of Service LED: On steady.
• Supply Fault LED: Flashing if there is no mains power and the battery voltage
is insufficient. On steady if the mains power is insufficient and no battery
power is detected.
• Control panel buzzer: Sounding intermittent.
When power is re-established the control panel returns to its former status.
Note: When the control panel indicates out of service, your fire alarm system is
partly inactive and your site is not properly protected. Contact your installation or
maintenance contractor immediately to investigate the problem.

1X-F Series Operation Manual 13
Control panel operation
User levels
For your safety, access to some features of this product are restricted by user
levels. The access privileges of each user level are described below.
Public user
The public user level is the default user level.
This level allows basic operational tasks to respond to fire alarms and/or faults at
the control panel. No password is required.
See “Public user level operation” on page 14 for more information.
Operator user
The operator user level allows additional operating tasks that command the
system or perform maintenance actions. It is reserved for authorized users who
have been trained to operate the control panel.
The default password for the operator/maintenance user is 2222.
See “Operator user level operation” on page 17 for more information.
This is a restricted user level protected by password security. To enter the
operator user level, enter the corresponding password using the numeric keypad,
and then press Enter.
A long beep and a steady Reset LED indicate that the correct password was
entered and that the operator user level is active. Three short beeps
accompanied by a flashing General Fault LED indicate that an incorrect
password was entered.
The control panel automatically exits the operator user level and reverts to the
public user level after 5 minutes if no button is pressed.
Note: The control panel is available with an access key option. The key switch is
located on the panel cover. With this option, either the key or the password can
be used to enter the operator user level.

14 1X-F Series Operation Manual
Public user level operation
Public user level operations are those that can be performed by any user. No
password is required to perform tasks at this level.
Public user level operation lets you:
• Acknowledge a system event and silence the control panel buzzer
• Cancel an active sounder (or evacuation for NBN S 21-100) delay
• Cancel an active fire routing (or warning for NBN S 21-100) delay
• Perform a control panel LED and buzzer test
• Display local indications only (for control panels with repeater functionality)
Acknowledging a system event and silencing the control panel buzzer
To acknowledge a system event and silence the control panel buzzer, press the
Panel Silence button.
A steady Panel Silence LED indicates that the buzzer was silenced and that all
current events are acknowledged.
Cancelling an active sounder delay (or evacuation delay for NBN S 21-100)
If a sounder delay (or evacuation delay for NBN S 21-100) is enabled and active,
press the Sounder Delay button (or Evacuation Delay button for NBN S 21-100)
to cancel the delay and activate sounders immediately.
Sounders (for EN 54-2 evacuation) and evacuation (for NBN S 21-100) can
cancel the delay and activate sounders immediately by pressing the Sounder
Start/Stop button (or evacuation Start/Stop button for NBN S 21-100).
A sounder delay (or evacuation delay for NBN S 21-100) is indicated as follows:
• Steady Sounder Delay LED (or Evacuation Delay LED for NBN S 21-100): A
delay is enabled.
• Flashing Sounder Delay LED (or Evacuation Delay LED for NBN S 21-100)
during a fire alarm: A configured delay is active (sounders are activated when
the configured delay elapses or when the delay is cancelled).
A fire alarm activated by a manual call point overrides any configured delay and
activates sounders immediately.