Honeywell Notifier Nfs28 Manual

997-492-000-6, Issue 6
July 201124
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
No indication on panel - buzzer
not sounding
Panel in Fire state.No power to panel. Check mains suppl
y;
Check total battery voltage is
>21V.
Check mains supply to panel;
Check battery connections
Carry out visual check;
if problems persist replace
units/batteries until fault clears.
Indication Action
Possible Cause
Common Fault Indication plus:
AC mains failed - panel operating on...

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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
7 Configuration
Access Level 3 allows input, output and control functions
to be configured.
The following sections describe how to configure the
panel. Each procedure requires the panel status to be
at access Level 3. The state of the configurable options
is indicated by the panel LEDs.
The table at left shows the functions of each pushbutton
at access Level 1/ 2 and Level 3.
The...

997-492-000-6, Issue 6
July 201126
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
7.2 Panel Options - A
Four user-configurable panel options are available:
a. Enable/Disable Engineering Mute
b. Enable/Disable Commissioning Mode
c. ACCEPT pushbutton access level
d. LAMP TEST pushbutton access level.
e. Delay Lights DISABLEMENT LED
7.2.1 Engineering Mute
The operation of the panel’s buzzer can be changed so that it
operates only occasionally with a Fire state, fault...

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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
Non-latching only affects the following fault conditions:
a. Zone Faults
b. Earth Fault
c. Power Supply Fault
d. Sounder Fault
e. Fire Output Fault
f. Fault Output Fault
g. Auxiliary Supply Fault.
Note:System Fault remains latching at all times.
7.3.2 Pulse Fire Routing Outputs
When this option is selected the fire routing ouput is
activated for a period of 5 secs only (pulsed)....

997-492-000-6, Issue 6
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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
7.5 Fire Zone Input Type
Fire input zones can be configured as follows:
a. Latching/non-latching alarms
b. Alarm or for short-circuit operation
c. Auto or manual operation mode
d. Coincident-alarm or separate-alarm detection
e. Setting a Sprinkler Verification Time.
f. EOL Device Type.
7.5.1 Latching/Non-latching Alarms
A detection zone can be configured as latching or non-
latching....

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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
7.5.5 Sprinkler Verification Time
A 2 sec. verification time is applied to all inputs to reduce
the occurrence of false indications of alarm due to transient
phenomena. 
When monitoring an input from a sprinkler
system it may be necessary to configure a sprinkler
verification delay. This is an exceptional situation and will
require the approval of a fire officer.
7.5.6 EOL Device...

997-492-000-6, Issue 6
July 201130
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
sounder output PCB, NFS-SST(English PN: 020-769-
001) or NFS8V-SST (German PN: 020-769) Display
Boxes and Routing Termination kit (020-773).
vi If an EN 54-2 or ISO 7240-2, 8.9 monitored fault routing output is required both relay and PSU PCB sounder
outputs are unmonitored in this mode. For this
application use the optional 4-way sounder output PCB.
vii Note: PSU PCB sounder...

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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
g. Fault transmission failed return signal.
Class Change: When a class change digital input is
activated, all outputs configured as sounders will be
activated until the input condition is removed.
Alert: When an alert digital input is activated, all outputs
configured as sounders and the internal buzzer start pulsing.
The sounders and internal buzzer remain pulsing until the
digital...

997-492-000-6, Issue 6
July 201132
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
7.8 Primary and Secondary Delays
A day-time delay strategy can be implemented, if required,
which comprises two user-configurable delay periods to
allow a fire search to take place. These delay periods are
referred to as primary and secondary. On an auto detection
zone, every fire state places the panel in a full alarm, hold-
off state until the indicated fire event has either:
a....

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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
7.9 Configuration Examples
The following examples are provided to offer guidance
when navigating through some of the menu options.
Note:
If you lose your way at any time, simply press the ‘main
menu’ pushbutton 
 to return to the menu select
position.
Example 1
How do I configure the panel back to the factory default
state?
Ensuring that the panel is at access Level 3 (refer to...