Honeywell Notifier Nfs28 Manual

							997-492-000-6, Issue 6
July 201134
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
8 Specification
General
The Fire Control Panel meets the requirements of EN 54-2/
4 and ISO 7240-2/4. See Section 1.4 CE Marking for further
details.
Mechanical:
Construction:
Fire-resistant, ABS plastic moulded front
cover and back box. Cover contains all
user interface controls and visual
indicators.
Dimensions (mm): 318(h) x 356(w) x 96(d)
Approx. Weight: 2kg (no batteries)
Environmental:
Climatic classification: 3K5, (IEC 721-2-3)
Operating temperature: - 5
oC to +45oC, (recommended +5oC to
35oC)
Humidity: 5%  to 95% R.H.
Height above sea level: Maximum, 2000m
Panel sealing: IP 30, (EN 60529)
Vibration: EN  60068-2-6, 10-150Hz at 0.981ms
-2,
0.1g
n (Meets the requirements of
EN 54-2/4)
EMC: Emissions: EN 61000-6-3
Immunity: EN 50130-4
Safety: EN 60950
Indicators and Controls:
LED Status indicators: Alarm,  Zonal  Fire, Zonal Fault, Power,
General Fault, General Disablement, Test,
Delay On (active), System Fault, Earth
Fault, Power Supply Fault, Sounder Fault/
Disabled, Fire Routing Active, Fire
Routing OutputFault/Disabled, Fault
Output Fault/Disabled, Auxiliary Fault.
Controls:
Two-position keyswitch:
Level 1 (key removed or in ‘remove’ position)
Level 2 access (key turned 90° clockwise).
Dedicated push-buttons are provided for the following functions: ACCEPT, SOUNDERS STOP/START,
RESET, BUZZER MUTE, DELAY ON/
OFF, ITEM SELECT, DISABLE/TEST/
NORMAL, LAMP TEST.
External Connections:
Cable entry: 18 x 20mm knock-outs on top face ofback box. One 25mm x 50mm knock-
out on rear wall of back box. 
						

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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
Electrical:
Classification: A combination of 
Installation Class 1
and Class 2 (panel must be earthed).
Conductor size: Compatible with cable conductor
sizes: 0.5mm
2 to 2.5mm2 .
Supply Rating:
Mains supply to the panel is to be provided via an external,
double-pole, mains-isolation unit. The supply rating is:
230V~ (ac) ±15%, 50/ 60Hz, 1.6A.
Power Supply Specification:
Input Fuse rating: T 1.6A H 250V
Output ratings:
Output voltage: 18.5 - 28.5Vdc
Output current: 1.8A (includes charger current - charger
disabled during alarm)
Ripple voltage: 200mV  (peak-to-peak)
Output Ratings - Charger: Charger voltage: 27.3Vdc at 20°C (temperature-
compensated at -3mV/°C/cell)
Charger current: 0.4A
EN54 Battery Wiring Test Impedance: 0.8 Ohm
EN54-4 PSU Loadings: I
max(a)= 350mA @ 27Vdc
I
max(b)= 1.8A @ 27Vdc
Range of battery size charged to 80% in 24hrs: 2.8Ah - 7Ah
Recommended Standby Battery Sizes: 24 hour standby period - 2.8, 3.3 or 7Ah
72 hour standby period - 2.8, 3.3 or 7Ah.
Note 1: Internal batteries - sealed lead-acid types are
recommended. The following manufacturers/ type are
recommended: Yuasa-NP, Fiamm FG and Jackyl.
Note 2:  To ensure compatibility with the battery wiring test
batteries are to be 2.8Ah or greater. However,
smaller Ah sizes will be compatible if the
manufacturer’s stated initial charged internal
resistance per battery is less than 80mOhms.
Note 3: The batteries should be replaced at intervals not
exceeding four years. Their lifetime is dependent upon
the ambient temperature; refer to manufacturer’s
technical specification for guidance. 
						

							997-492-000-6, Issue 6
July 201136
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
Outputs:
Sounder Circuits:
Two outputs configurable as sounder, fire routing output or
fault output and each rated at 0.5A. The sounder and fire
routing outputs are monitored.
18.0 - 28.5Vdc, (24Vdc nominal) rated at 0.5A.
Note: If the total alarm current (sounders + fire + Auxiliary output)
exceeds a total load of 1A, you must check the total
alarm load using the Battery Calculation in Section 9.
Zone Circuits:
Factory-supplied two, four or eight detector zones.
The quantity of detectors per zone equals 2.0mA divided by
the individual detector’s quiescent current rating - see
manufacturer’s data sheets - e.g. for a detector quiescent
rating of 75 μA; the quantity of detectors:
= 2.0mA ÷ 75 μA  =  26 detectors.
Auxiliary DC Output: 18.0V - 28.5Vdc (24Vdc nominal) rated at 0.5A
Note: The length of any cables connected to the auxiliary
output 
must not exceed 30m.
Optional 2-Way Relay PCB providing: A Fire Relay Output
A Fault Relay
 Output
Each relay is rated at 30Vdc, 1A.
Note:  To comply with the requirements of EN 54-2: 8.8, if
the 2-way Relay PCB is not fitted one of the sounder
circuits must be configured as a fault output.
Optional 8-Way Relay PCB providing up to 8 outputs per
PCB (two PCBs may be fitted). Relay contact functions are
configurable using jumper links to provide the following: Repeat Zonal Output or
Coincident Zonal Output or
Repeat Zonal Output (zones 1-4) and Shop Interface
Outputs or
Inputs and Shop Interface Outputs
Max current (per PCB): Quiescent - 0.1mA
Alarm/ all active - 80.1mA
Each relay is rated at 30Vdc, 1A
Fire resistor:  Nominal 470R ±5%
Optional 4-way sounder PCB supporting four configurable
monitored outputs and two configurable input circuits.
Various preset combinations of input and output functions
are selected via a DIP switch. By using the supplied end-of-
line termination the 4-way sounder PCB is able to provide
sounder, fire routing and fault routing outputs as required
by EN 54-2 and ISO 7240-2. These outputs are all monitored
for partial-short and partial-open circuit faults as required
EN 54-2: &
ISO 7240-2 7.7.1
One output on the panel
must be configured as a fire output.
!
EN54
ISO 7240!
EN54
ISO
7240
EN 54-13 : 5.3.4.1, 5.3.4.2
PSU PCB circuits do not comply with the
requirement for  partial- open and -short circuit
fault monitoring on fire
alarm device, fire routing
and fault routing outputs. 
						

							997-492-000-6, Issue 6July 2011
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EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
by EN 54-13. A fault of the 4-way sounder PCB is indicated
by the Auxiliary fault indicator. The following output options
are configurable:- Sounder output
- ÜE transmission circuit
- Fire protection output (SST)
- Fire routing output
- Fault routing output
The following input options are configurable: - Fire transmission confirmed
- Fault transmission confirmed
- Class change
- Day Mode
Maximum ouput current (per PCB): For two or more ouputs (if DIP switch 6 set to >250mA): 1.5A
For each output (if DIP switch 6 set to 
						

							997-492-000-6, Issue 6
July 201138
EN54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
9 Battery Calculation
The table in Section 6.4.1 Standby Batteries can be used
to select the correct battery size. If full calculations are
required use the procedure below.
General Data
PSU size Maximum Maximum Internal
No. of sounder External Battery Size
CircuitsAlarm LoadRange
  1.8A 2 1A 2.8 - 7Ah
Standby Load (Amps)
Standby Load in Amps No. Current Total
Basic panel1 0.034 0.034
Device quiescent current
(max 2mA per zone)
EOL Current (per zone) - 0.0056
fitted with Resistor EOL
Optional 4-way Sounder PCB(s) 0/ 1/ 20.047
Auxiliary equipment *
Total Standby Load (L1)
Peak/ Alarm Load (Amps)
Alarm Load in Amps Qty Current Total
Basic panel1 0.034 0.034
Zones alarm current 2/ 4/ 80.03
Optional 2-way Relay PCB 0/ 1 0.04
Optional 8-way Relay PCB(s) 0/ 1/ 2 0.08
Sounder output 1
Sounder output 2
4-way Sounder PCB outputs **
Auxiliary equipment *
Total Alarm Current (L2)
Total 
						

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