SMS SenTRI Instruction manual

4188-979_Issue 2_04-10 SentriONE installation
Part of Document pack 2534-235_issue 2
Data and Installation Instructions
SenTRI ONE panel-based
fire detection and alarm system
042bc/14
one

Contents
Notes on system installation -------5
Installation requirements -----------5
Second fix installation ------------5
Fixture and fittings --------------5
As fitted drawings --------------5
Cable type and routing ------------5
Fire sensor cover ---------------5
Earth continuity ---------------5
Power supply -----------------5
Mains supply -----------------5
Devices -------------------5
Local Manual Call Point -----------5
EN54 information ------------6
Optional functions with requirements of
this European standard ------------6
System wiring --------------6
Cable separation ---------------6
Lightning protection ··············· 6
Requirements of cables ------------7
Loop Cable usage ················ 7
Mains Supply cable --------------7
Repeat indicator to Control panel cable ----7
Loop cable ------------------7
Enhanced cables ················· 7
Standard cables ················· 7
Devices per Device loop -----------8
SenTRI ONE System Architecture -------10
SenTRI ONE panel -----------11
Features ····················· 11
Technical data ----------------12
Control panel ·················· 12
Power supply ·················· 13
Panel installation ------------14
How to disassemble the panel to gain
access to the Backbox-------------14
How to mount the backbox and
dedicated cable entry points ----------15
Flush Mounting the backbox ---------16
Refitting the electronics module --------16
Cable termination on enclosure --------17
Wiring test ···················· 17
Mains supply -----------------18
Mains and battery supply connections ······18
Removable terminal blocks ----------18
Terminals for external circuits on
Main Control Board -------------19
Device loop circuit --------------20
Master alarm circuits -------------21
Common Fault contacts ------------21
Fire Output contacts -------------22
Repeat indicator panel ------------22
External Evacuation input -----------23
Class Change input --------------23
RS232 Port------------------ 23
USB Port------------------- 23
Battery installation --------------24
On completion of panel installation ------25
Repeat Indicator panel ----------26
Technical data ----------------26
Installation ------------------26
S-Quad Sensors -------------27
General specification -------------27
Base ---------------------27
Base Gasket -----------------27
Base labels ------------------ 27
Indicators ------------------27
Dust Cover ------------------27
Do'sandDon't----------------27
Siting --------------------27
Metal back box ----------------28
In - Out wiring to SenTRI bases --------28
Programmable input/output ----------28
Tools for S-Quad ------------29
To remove a SenTRI device ----------29
To fit a SenTRI device ------------29
To fit a dust cover --------------29
To remove a dust cover ------------29
SenTRI device Semi-flush fixing kit
(SEN-FLUSH) -------------30
Technical data ----------------30
Beam sensor (Supported)---------31
Technical Data ----------------31
Installation ------------------32
Parallel bracket assembly ············ 32
SenTRI Speech, Sounder Strobe mark II - 33
Technical data ----------------33
Installation ------------------34
Retrofitting a System SenTRI device ······34
Manual Call Points -----------35
Glass or Resettable element options ·······35
Optional Back box ··············· 35
Technical data ----------------35
Installation ------------------35
Keyswitch Interface / MCP--------37
Keyswitch assembly -------------37
Back box ···················· 37
Technical data ----------------37
Installation ------------------38
Operation ------------------38
Label --------------------38
Features -------------------39
Cables --------------------39
Installation ------------------39
Interface Modules for SenTRI - Low voltage
(LV) Input/Output ------------39
Wiring diagrams ---------------40
Technical data ----------------41
Installation instructions
2

Interface Module for SenTRI
Medium Voltage (MV) Output ------42
Features -------------------42
Cables --------------------42
Installation ------------------42
Wiring --------------------42
Technical data ----------------43
Old Mains powered interface unit-----44
Technical data ----------------44
Installation ------------------45
SenTRI ONE system parts --------46
Control Panels ----------------46
Printer --------------------46
Repeat panels-----------------46
T-Breaker and Remote LED----------46
Manual call points --------------46
Keyswitch interface ··············· 46
SenTRI Analogue Sensor, Sounder
and Strobe units ---------------47
Beam sensor -----------------47
Sounder and Strobe --------------47
SenTRI Interfaces --------------48
Keyswitch ···················· 48
Low voltage range ················ 48
Options ····················· 48
Medium voltage range ·············· 48
Mains powered interface unit ---------48
Surge protection ---------------48
Replacement Plug ins ·············· 48
Manuals -------------------48
3
SenTRI ONE System

Preface
This is the second issue of the Installation instructions for the
SenTRI ONE panel based system with information on products
that are compatible with Version 2.xx software. The manual
covers information on how to install the panel and wiring external
equipment, such as loop devices.
These instructions must be read in conjunction with the
recommendations in BS5839:Part 1, which is the code of practice
for Fire detection and alarm systems for buildings.
Associated Documents
Document Pack, includes:
¨Operating instructions
¨Installation instructions
¨Log book
¨Quick ref. / Template.
Conventions
"This is a note to highlight important text that is
normally hidden in the main text.
&This is either a caution to prevent damage
to the equipment or a warning to inform of
dangerous conditions that may result in injury or
death.
Abbreviations
ac - Alternating current
AS - Anti surge
C - Common
CH -Channel
dc - Direct Current
DIL - Dual in line
DEV - Device
EOL - End of line
EP - Environmentally protected
GND - Ground
I/F - Interface
IO or I/O - Input Output
IP - Ingress protection
LCD - Liquid crystal display
LED - Light-emitting diode
LPCB - Loss prevention council certification board
LVD - Low voltage directive
MCP - Manual call point
MICC - Mineral insulated copper cable
N/C - Normally closed
N/O - Normally open
NVM - Non Volatile Memory
OC or O/C - Open circuit
PCB - Printed circuit board
PIN - Personal identification number
(Usercode, password or access code)
PSU - Power supply unit
QB - Quick blow (fuse)
SC or S/C - Short circuit
SPCO - Single pole change over (relay contacts)
T - Anti-surge (fuse)
USB - Universal Serial Bus
Installation instructions
4

Notes on system
installation
The power-up of the control panel and
commissioning of the system is done by
the Servicing organisation.
Installation requirements
It is recommended that the installer follow the general
requirements of BS5839:Part 1:2002, which is the code of
practice relating to fire detection and alarm systems for buildings.
The installer must follow the relevant parts of BS7671 : 1992
Requirements for Electrical installations, 17th edition of IEE wiring
regulations if installation is in the United Kingdom, UK.
Second fix installation
To prevent the possibility of damage or dirt degrading the
performance or appearance of the products, the installation of
the panel should be delayed until all major building work in the
area is complete.
"The installation of all outstanding parts and
panel the panel power up is usually carried out during
system commissioning.
Fixture and fittings
It is the installer's responsibility to provide adequate fixtures and
fittings for the type of construction surface onto which a product
is to be mounted, whilst utilising the fixing points on the product.
As an aid to this decision, the weight and overall size of each full
assembly together with implications on cable entries and routing
should be taken into consideration.
"All these procedures assume that the cable,
gland, steel box (BESA box) and other related
accessories are provided by the installer.
As fitted drawings
The installer should acquire site specific information from the
interested parties, for details on the location of products for
installation. The acquired information together with this guide and
the relevant standards should be used to assist the work.
Each product assembly can be identified from its package label.
The contents of all packages should be checked for any
discrepancies.
Cable type and routing
Appropriate attention must be given to ensure the correct cable
type is installed in accordance with 'as fitted drawings', site
specific information and recommendations of BS5839 Part 1 :
2002. The cables must be installed using cable manufacturers
recommended fixing and accessories.
Fire sensor cover
Each fire sensor may be supplied with a plastic dust cover. The
cover must be fitted to prevent dust and dirt from the building
work contaminating the fire sensor.
Earth continuity
All earth connection points should be clean to provide a good
electrical conductivity path. To maintain the earth
continuity: all earth leads and fittings provided should be
installed. The loop cable screen must be continued through
each system device on the loop circuit, whether the earth is
connected to the device or not.
"Do not use any part of building structure for
earthing.
Some of the system products having metal enclosure with zinc
coating around the cable termination points, the coating
provides a good electrical conductivity path for cable earth
termination. The zinc coating on metal enclosures should not be
damaged. Any damage will expose bare metal, which can
corrode and make a poor earth connection.
Power supply
The power to the system is derived from the mains and battery
supplies. Before removal of the electronic module from the panel
or disconnection of any cable from the board ensure both mains
and battery supplies are disconnected.
Mains supply
Mains supply to any fire alarm control and indicating equipment
must be via an unswitched 5A fused spur unit. A disconnect
device must be provided to disconnect both poles and must have
a minimum gap of 3mm. The disconnect device should be
available as part of the building installation and must be easily
accessible after installation is complete.
&All mains powered equipment must be earthed.
Devices
Always install new devices on the loop circuit. Never use devices
that have been previously installed on the loop circuit of another
system.
Local Manual Call Point
To comply with the requirements of EN54-2 : 1997 a manual call
point must be installed near the control panel. The call point
when activated must be set up to sound all alarms without delay.
"Failure to install and configure a local manual
call point in the manner described above when delays are
set up on the system will result in the panel not
complying to EN54- 2 : 1997.
5
SenTRI ONE System

EN54 information
Optional functions with requirements of this European standard
The Control panel complies with the requirements of EN54 : Part 2 : 1997. In addition to the basic requirements of the standard the
panel conforms to the following optional clauses:
Clause Description
7.8 Output to fire alarm devices
7.11 Delays to action outputs
8.3 Fault signals from point
10 Test condition
System wiring
"
If instructed, the installer may need to terminate as well as connect the cables to the appropriate terminal blocks.
Cable separation
Where the outgoing and return cables of a loop circuit covers more than the equivalent of one zone they must not run together, for
example, either close to the Control Panel or in a service duct. There should be as much physical separation as possible between
the cables and the mechanical protection of the cable should be to a particularly high standard. This is to minimise the risk of
accidental damage to both cables.
Lightning protection
Where a loop cable is mounted to an external wall or between two buildings then consideration should be given to the use of
lightning protection devices.
Installation instructions
6
0XXxx
1
1
2 2
Zone circuit
Sounder circuit
3
230V ac
Other loop devices
3
1
2
Loop voltage
surge protection
Mains 230Vac
voltage surge
protection
Input Output lin
e
voltage surge
protection
There must be a good earth
connection to the voltage surge
protection device
Interface
Unit
SenTRI ONE
Control Panel
042bc/14

Requirements of cables
The British Standard BS5839 Part 1 : 2002 Code of practice for
system design, installation, commissioning and maintenance
states the requirements for standard and fire resisting cables in
Clause 26.2 section d and e.
"d) Standard fire resisting cables should meet PH 30
classification when tested in accordance with EN50200 and
maintain circuit integrity if exposed to the following test:
- a sample of the cable is simultaneously exposed to flame at a
temperature of 830ºC- 0+40ºC and mechanical shock for 15min,
followed by simultaneous exposure to water spray and
mechanical shock for a further 15min.
e) Enhanced fire resisting cables should meet the PH120
classification when tested in accordance with EN 50200 and
maintain circuit integrity if exposed to the following test:
- a single sample of the cable is simultaneously exposed to flame
at a temperature of 930ºC - 0+40ºC and mechanical shock for a
period of 60min, followed by simultaneous exposure to water
spray and mechanical shock for a further 60min."
"The cables listed in this manual are those that
have been tested for EMC compliance with the system
products.
Loop Cable usage
"There is a maximum limit of 1Km loop cable
usage allowed per loop circuit. This maximum limit is the
sum of the cable used on main loop circuit, spurs off
main loop circuit, plus cable runs to all input / output
lines off loop powered interface units installed on the
loop.
There is a further maximum limit of 100m cable run
allowed per input/output line off loop powered interface
unit.
Mains Supply cable
The mains supply cable must be a standard fire resisting type
and should meet PH30 classification, such as any of the standard
and enhanced cables listed above.
Repeat indicator to Control panel cable
A maximum of 1Km cable distance is allowed between Control
Panel and Repeat indicator panel
¨Belden No. 9842 EIA RS485 Applications, O/A
Beldfoil® Braid having two twisted pairs
Loop cable
A loop cable carries both data and power, therefore its selection
is important. Note the following:
¨In countries where the European EMC directive is in
force, only EMC Compliant cables are to be used.
¨The loop cable usage must not exceed 1Km. This
includes the cable used on main loop and spur circuits.
¨Single pair cable must be used. It is NOT permissible
to run mixed loops or outgoing and return pairs in a
multi core cable, due to inadequate separation and
possible electrical interference problems.
¨Each core of the loop cable must be 1.5mm2cross
section area.
¨The cable screen must be capable of being earthed at
each system device.
¨Red is the preferred cover sheath for fire applications.
¨The specified loop circuit cables are also suitable for
wiring master alarm, auxiliary relay, input/output lines
and mains supply.
Enhanced cables
¨Mineral insulated cable (MICC) to BS6207:Part 1
¨Approved Enhanced cable:
Draka Firetuf Plus Enhanced FTPLUS2EH1.5RD
Standard cables
Approved EMC cables for loop wiring
¨Draka Firetuf EMC Standard 1.5mm2
FTEMC2EH1.5RDR
¨Draka Firetuf FTZ2E1.5 FIRETUF OHLS *
fire resistant data cable
¨Raydex CDT FG950 *
¨Cavicel SpA FIRECEL SR 114H *
distributed by Cables Britain
¨AEI Cables FIRETEC *
¨BICC Pyrotenax FLAMESIL FRC *
¨Datwyler LIFELINE *
¨Alcatel cable PYROLON E * distributed by Winstonlead
¨Huber & Suhner RADOX FR *
¨Pirelli FP200 FLEX *
¨Pirelli FP200 GOLD *
"The cables marked * utilise laminated
aluminium tape with a tinned drain wire for electrostatic
screening. Under certain environmental conditions
galvanic action may take place between the aluminium
and the drain wire. This will severely degrade EMC
performance as the foil to drain wire impedance will
increase. Armoured variants of these can also be used
for wiring a loop circuit.
7
SenTRI ONE System

Devices per Device loop
"It is important that redundancy is built into the system to accommodate future expansions.
The number of devices on the loop circuit can be limited by the total number of addresses available, the electrical load on the circuit,
the maximum cable length and other geographical considerations.
¨The loop circuit must not cover more than 10,000m2of floor area of a protected site.
¨In total a maximum of 127 devices are allowed on the loop circuit.
¨As a general rule allow 1000 load factor for the loop circuit and only use the 2nd value when calculating the
maximum load factor.
The following table can be used as a rough guide only to determine loop load.
"For a precise battery standby value use the Battery Standby Calculator. The Battery Standby Calculator
should be used during system design stage using the Commissioning tool.
Device code number Description
Load
factor per
device
Maximum
devices per
loop
SENTRI-RPT Repeat panel (loop powered) 3 4
SENADV-IP-ST-XX (Low profile range) Strobe Red 10 100
SENADV-SN-X (low profile range)
SENADV-IP-SN-X (low profile range)
78400-03NM (system type)
Standard tone 5 127
SENADV-SN-ST-XR (low profile range) Standard tone with red strobe 10 80
SEN-INT-INPUT
SEN-INT-4IO
SEN-INT-OUTPUT
1 - LV Input interface module
4 - LV Input/Output interface module
1 - LV Output Interface module
Switch Input
Relay Output
Zone Input
Every LED Output
1
2
26
5
127
127
32
100
SEN-INT-ACDIN or SEN-INT-AC 1 - MV Output Interface module 5 170
S4-78302-02-NM S4 Mains powered interface 1 8
78301-01NM Mains powered interface 4 8
78321-01NM 4 Channel Loop powered interface 4 30~
SEN-715 Optical Sensor 0.5 200
SEN-720 Heat Sensor 0.5 200
SEN-780 Heat Sensor & Sounder 7 - 13* 127 - 70*
SEN-770-ST Heat Sensor, Sounder & Strobe TBA TBA
SEN-710 Optical Heat Sensor 0.5 200
SEN-770 Optical Heat Sensor & Sounder 6 - 12* 127 - 80*
SEN-DUCT Venturi-Air Duct Kit 0.5 127
SENTRI-BEAM Beam sensor pair 3 per pair 16 (pairs)
Installation instructions
8

Device code number Description
Load
factor per
device
Maximum
devices per
loop
SEN-8XX range
SEN-INT-KEY
SenTRI Manual call point
SenTRI Keyswitch Interface
1
4
127
127
78299-01NM Tee breaker 0.5 127
The maximum devices per loop and load factor per device have been revised due to changes in product
specification.
~ - A maximum of up to 100 input channels are allowed per loop.
* - These values are applicable when sounder is operating in turbo mode.
LV - Low voltage
MV - Medium voltage
9
SenTRI ONE System

SenTRI ONE System Architecture
The loop circuit allows wiring of addressable devices like fire sensors, alarm sounders, manual call points and interface units, a
combined maximum of up to 127 devices is allowed on the loop circuit.
Installation instructions
10
0XXxx
Conventional
devices 2-wire
230V ac
Magnetic door
release
230V ac
4 channel input/output
interface
Spur
Control panel
Input output signals
may be used to control
and monitor plant equipment
(Building management systems
)
(Two master alarm circuits)
Fire relay change over
contacts
rated 1A @ 24Vdc
Class change input
T
Tx Rx
Addressable System Devices
- Manual Call Point
- T Breaker
T
- End of Line Unit
- Magnetic door release
Conventional Products off
interface inputs
- Alarm sounder
- Conventional Fire Detector
- Manual Call Point
Loop circuit
T
- 4 - Input/Output
Mains powered interface unit
- Beam sensor
Transmitter and receiver
Tx
Rx
- Voice enhanced Speech,
Sounder, Strobe Unit
Repeat
indicator
panel
RS232
Evacuate Input
230V ac
RS485
- Sensor, Sounder & Strobe
24V supply
Conventional
devices 2-wire
i
i/o
- 1-Input
LV loop powered interface
i
- 1-Output + Confirmation input
LV loop powered interface
o
- Mains switching output
MV loop powered interface
o~
- 4-Input/Output
LV loop powered interface
i/o
o~
Printer Port
USB
Fault relay change over
contacts
rated 1A @ 24Vdc
Printer
L
- Remote LED
o
L
LED off sensor
Laptop
Configuration tool
Conventional Sounders
i/o

SenTRI ONE panel
The SenTRI ONE panel is designed to meet the requirements of
EN54-2 : 1997 and EN54-4 :1997. The panel can accommodate
a loop circuit of analogue addressable devices, like fire sensors,
sounders, manual call points and interface units. The panel gives
local visual and audible indications of system events means of
indicators, a message display and an integral sounder. An
integral mains derived supply provides power to the panel and
the loop circuit in normal conditions and the integral batteries
provides a standby supply for up to 24 hours with 0.5hours of
alarms should the mains supply fail. The controls are PIN code
protected. The panel is designed for surface and semi flush
mounting and facilitates both rear and top cable entry points.
Features
¨Single loop fire control panel.
¨Up to 127 addressable devices can be connected to a
loop circuit, devices like sensors, call point and
interface units.
¨Two master alarm circuits.
¨RS485 Port to connect to repeat indicator panel(s).
¨RS232 Port to connect to an external printer.
¨USB Port to connect to a Commissioning computer.
¨Fire Output - One set of clean voltage-free change over
contacts.
¨Fault Output - One set of clean voltage-free change
over contacts.
¨Class Change input that actions class change signal to
selected sectors
¨Evacuate input that actions all alarm sounders
including master alarms and fire output
¨Standby supply to power the system via batteries for
24 hours plus 0.5 hour alarm load.
¨Alphanumeric LCD with back light to display event
information.
¨Integral 16 zone LEDs (with First fire zone LED
flashing).
¨LED lights for event indications.
¨Local audible buzzer for event announcement.
¨Push buttons for essential controls and menu driven
commands.
11
SenTRI ONE System
042bc/14

Technical data
Control panel
Standard Designed to EN54-2 : 1997
Approval LPCB approved
Panel dimensions
in mm
height 419 x width 347 x
depth 85.5
Panel weight approximately
3.12Kg without batteries
8.2Kg with batteries
2 - 12V 7Ah batteries are
required (each battery weighing
2.54Kg [5.6lbs])
Storage
temperature
-10ºC to 55ºC
Operating
temperature
-5ºC to 40ºC
Relative Humidity
(Non condensing)
Temperature
5ºC to 45°C
up to 93%
Emission BS EN 61000-6-3:2007
Residential, Commercial & Light
Industry Class B limits
Immunity BS EN 50130-4: 1996: Part 4
Alarm systems: Electromagnetic
compatibility
Product family standard:
Immunity requirements for
components of fire, intruder and
social alarm systems
Ingress Protection IP30
Colour Door: Grey RAL 7040
HMI: Dusty Grey RAL7037
Backbox: Black
Devices per loop A maximum of up to
127 addressable devices on the
loop
Device labels Each device can be given a
32 character label for loop
device location
Relays
Fire
Fault
Voltage-free contacts
rated 1A @ 24Vdc
1 - set of change over contacts
that are configured to operate
immediately on a Fire event. The
relay is normally de-energised
1 - set of change over contacts
configured to operate
immediately on occurrence of a
Fault event. The relay is
normally energised
Master alarm
circuits and
fuses
2 - Master alarm circuits
operating at 24 volt nominal,
200 mA maximum per circuit
MA1 - Fuse FS2 250mA AS
MA2 - Fuse FS3 250mA AS
Both fuses are Ceramic type
20mm x 5mm in size and are
located on the MCB
Evacuate Input A closed input will trigger all
alarms to sound evacuate signal
to include master alarms and
activation of fire output
Class Change
input
A closed input will trigger all
configured sectors to sound the
class change signal.
RS485 Port
RS232 Port
USB Port
RS485 - (PP3) Repeat indicator
panel
RS232 - (PP10) Printer
USB - (P2) Commissioning tool
24V supply Maximum output current of
200mA is protected by a
Ceramic Fuse FS1 0.25A AS
20mm x 5mm in size, located on
the MCB.
Power taken from this supply will
affect the battery standby
duration.
Indicators Fire (red)
Power (green)
Fault 'Common' (amber)
16 - Zones (red)
Verify (amber)
Disablement (amber)
System fault (amber)
Power fault (amber)
Sounder Fault (amber)
Test (amber)
Delay (amber)
Sounder Disablement (amber)
Display Alpha-numeric display -
8 lines by 40 characters per line,
back-lit, (LCD having black
characters on green
background)
Internal sounder Audible announcement of Fire
and Fault events.
Controls at
Access level 1
Menu navigation buttons to view
events and for PIN code entry to
other access levels.
Installation instructions
12

Controls at
Access level 2
(Customer mode)
As for controls at Access level 1
plus controls for:
¨Cancel buzzer
¨Emergency controls
¨Clock set
¨Day/Night mode
¨Enablement/Disablement
¨Weekly test
¨Zone test mode
¨Display test
¨Loop status/repair
¨Firmware version
¨Site data
Controls at
Access level 3
(Engineer mode)
As for controls at Access level 2
plus controls for:
¨Delay settings
¨Calendar settings
¨External inputs
¨Serial ports
¨Weekly test settings
¨Zone label and linkage
¨Device settings
¨Interface channel settings
¨Sound Signal settings
¨Zone Cause and Effect
¨Sound alarm mode & operation
¨Signal settings
¨Loop status and map
¨Site data backup & restore
Controls at
Access level 4
(Maintenance
mode)
As for controls at Access level 3
plus controls for:
¨Clear logs
¨Maintenance reminder
¨Firmware upgrade
¨Device time averages
¨Device condition codes
¨Diagnostics
¨Reset codes, configuration and
labels to factory default settings
¨Backup & restore changes
¨Fast find
¨Loop power up/down
¨Start detection
¨Commissioning mode
¨Beam alignment
¨Proprietary Logo
&Always use the recommended
replacement or equivalent type battery, as there is a
risk of an explosion if incorrect battery is used.
Power supply
Standard Designed to EN54-4 : 1997
Mains supply
voltage and fuses
230V 50Hz protected by:
FS3 Fuse - 3.15A (T) 250V
Ceramic 20mm x 5mm,
located on PSU.
Input current - 0.45A
Nominal supply
voltage for master
alarm circuits
24V +/- 4V
Lithium Battery BATT3 on MCB. Type
Panasonic CR2032 3V cell.
CAUTION: Replacement
battery must be the same
or equivalent type battery.
Dispose of used batteries
according to the
manufacturer’s
instructions.
Battery circuit
'BAT1' and fuse
FS1 Fuse 3.15A (T) TE5 on
PSU
PSU volts & fuses
43V (quiescent)
24V
FS6 Fuse 1.0A (T) TE5 on PSU
FS4 Fuse 1.0A TE5 on PSU
Battery Powersonic PS-1270 F1
2- 12V 7Ah sealed lead acid
batteries that will provide
24 hours standby and
30 minutes alarms,
determined by system loading
via battery standby calculator.
Storage
temperature
-10 to 55ºC
Operating
temperature
-5ºC to 40ºC
Relative Humidity
(Non condensing)
up to 93%
(Temperature 5 to 45°C)
Maximum current
from battery
without mains
connected
1.5A
EN54 Part 4 data
I max a 1.5 A
I max b 1.4 A
I min
UVLO
Ri max
300 mA
20.7 V ±400mV
1.5 W
&After power down hazardous voltages
may still be present even if indications are
extinguished.
13
SenTRI ONE System

Panel installation
The SenTRI ONE panel is supplied fully assembled, it is important to check the contents to ensure all the parts are supplied.
Note the 2 x 12V 7Ah batteries are required but not supplied.
Parts in the Spares packages Quantity
Fuse T3.15A H 250V 20mm x 5mm Ceramic 1
Fuse T250mA H 250V 20mm x 5mm Ceramic 3
Fuse T1A TE5 2
Fuse 3,15A TE5 1
10K Ohms Resistor 4
Battery Link 1
Battery Lead 1
Allen Key# 1
Panasonic CR2032 3V cell 1
Trimmer tool 1
Document pack : Operating, Installation, Quick reference +
template and Log book
1
# - part supplied in a plastic bag fitted to the enclosure.
How to disassemble the panel to gain access to the Backbox
aOpen the two captive screws kon the 'Outer cover' jusing the allen key and unhook the 'outer cover' lfrom the
'backbox'.
bOpen the two captive screws mon the 'electronic module' and lift out the module nfrom the 'backbox'.
Installation instructions
14
CR2032
3V
i
POWERFAULT FIRE
Tes t Delay Verify
Sounder Fault
Zone 2
Zone 6
Zone 10
Zone 14
Zone 3
Zone 7
Zone 11
Zone 15
Zone 4
Zone 8
Zone 12
Zone 16
Disablement
Zone 1
Zone 5
Zone 9
Zone 13
System Fault
Sound
Alarms
Silence
Alarms
Power Fault
Reset
Cancel
Buzzer
Sounder
Disablement
Outer Cover
Allen Key
Electronic module
Backbox
Allen Ke
y

How to mount the backbox and dedicated cable entry points
&Unused knockouts that have been removed should not be left open.
Knockout the required dedicated cable entry points from the back box. Use the correct method of knocking out the entry points, as
illustrated below. Using the three fixing points to mount the backbox onto a flat wall using suitable fixings.
15
SenTRI ONE System
Floor level
Master
Alarms 2
Cable entry
points
13 - Top
2 - Back
3 - Panel
fixing points
(top hole is
a keyhole)
1.7m
Fault
Relay
Fire
Relay
Loop
End2
RS232 RS485 +
24Vdc
External
Evacuate Class
Change
24Vdc
Supply
Loop
End1
Master
Alarms 1 Mains
Supply
Backbox
Top side
of the backbox
Dedicated Cable entry points
How to knock out
cable entry points
15 - 20° maximum
o
Apply impact using
suitable tool to
knock out a cable
entry hole.

Flush Mounting the backbox
The control panel may be flush mounted using a flush surround SENTRI1-FLUSH.
aCut out an aperture in the wall to allow the flush surround to be fitted, see diagram for dimension of the aperture.
bUsing the fixing holes on the flush surround, secure it into the aperture side walls.
cRoute the cables through the cable entry points into the panel and at the same time insert the panel into the flush surround.
dFit the panel back box to the flush surround using the 3-off 5mm screws not supplied with the flush surround.
Refitting the electronics module
Locate the three tabs of the electronic module jinto the backbox and close the upper part kof the module into the backbox and
then secure the assembly by tightening the two captive screws lusing the allen key. Ensure the two PCB fixing-screws mthat
provides earth bonding are securely fitted and are not loose.
Installation instructions
16
Control Panel
Cross section of
the wall to which
the panel is to be
semi-flush mounted
Aperture
4mm diameter
fixing holes
Aperture Height: 406mm
A
p
erture Width: 347mm
A
perture
d
ept
h
s
h
ou
ld
not
b
e
l
ess t
h
an: 75mm
Semi-flush surround
POWERFAULT FIRE
Tes t Delay Verify
Sounder Fault
Zone 2
Zone 6
Zone 10
Zone 14
Zone 3
Zone 7
Zone 11
Zone 15
Zone 4
Zone 8
Zone 12
Zone 16
Disablement
Zone 1
Zone 5
Zone 9
Zone 13
System Fault
Sound
Alarms
Silence
Alarms
Power Fault
Reset
Cancel
Buzzer
Sounder
Disablement
Allen Key
Electronic module
Backbox
Check to ensure these
screws are securely fitted.

Cable termination on enclosure
The wire length between the cable termination and point of connection must be as short as possible. Cable earth drain wire, where
applicable, must be connected to the respective drain termination point.
Terminate each cable at the dedicated entry point on the enclosure, using the cable manufacturers recommended techniques.
Where the cable is not required to be connected, leave 300mm (unless otherwise specified) tail wire length and mark each core
identifying its final point of connection. Where the cable is required to be connected, ensure it is securely fitted to the respective
terminal.
Wiring test
&DO NOT undertake high voltage insulation tests WITH THE CABLES CONNECTED to the panel and
system device terminals. Such a test may damage the electronics circuitry in loop devices and at the panel.
17
SenTRI ONE System
GLANDGLAND
BOARD
EARTH DRAIN
WIRE Should
not be more than
50mm long and
must be sleeved
CABLE TERMINATION
Panel
enclosure
Softskin (Fire Tuf)
POWERFAULT FIRE
Tes t Delay Verify
Sounder Fault
Zone 2
Zone 6
Zone 10
Zone 14
Zone 3
Zone 7
Zone 11
Zone 15
Zone 4
Zone 8
Zone 12
Zone 16
Disablement
Zone 1
Zone 5
Zone 9
Zone 13
System Fault
Sound
Alarms
Silence
Alarms
Power Fault
Reset
Cancel
Buzzer
Sounder
Disablement
TERMINALS
MAINS
SUPPLY
Master
alarms 1
Master
alarms 2
LOOP 1
END 1
LOOP 1
END 2
Class
Change
Fire
Relay
Cables that are not required to be connected to terminals must
be neatly coiled up and carefully tucked away into the backbox
in the space above the electronic module.
30mm

Mains supply
&Ensure that the mains supply cable enters the panel through a dedicated cable entry, located
adjacent to the mains terminal block and that is also segregated from loop wiring.
"These fire alarm system products are not designed to be powered from IT Power systems.
All mains powered equipment must be earthed. The mains supply to any fire alarm control and indicating equipment must be via an
unswitched 5A fused spur unit. A disconnect device must be provided to disconnect both poles and must have a minimum gap of
3mm. The disconnect device should be available as part of the building installation and must be easily accessible after installation
is complete.
The fused spur isolator cover should be marked:
FIRE ALARM - DO NOT SWITCH OFF
The fire alarm equipment’s fused spur unit must be fed from a dedicated switch or protective device at the local mains
supply distribution board.
Mains and battery supply connections
The mains and battery supply cables must be installed to a stage to facilitate the power up for commissioning, which is carried out
by the Servicing organisation.
&Where the mains cable is to remain disconnected, its tail ends must be insulated to prevent
dangerous conditions arising in the event of accidental switching on of the mains supply.
Removable terminal blocks
To ease installation the terminal blocks on the Main Control Board can be unplugged from the board.
Installation instructions
18
PANEL
NL
PE
FS3
3.15A(T)
mains fuse
Dedicated mains supply
from the consumer unit
5A Unswitched
Fused spur unit Ensure the mains supply remains isolated
until power up is required for commissioning
the system.
removable

Terminals for external circuits on Main Control Board
The Main Control Board (MCB) holds all the terminals for the connection of fire alarm loop circuit, master alarms, fire and fault
relays, class change, evacuate input and repeat indicator panel.
19
SenTRI ONE System
IC10
P2
Main Control Board
24V DC MA1 MA2
FS3
0A25 AS
CERAMIC
FS2
0A25 AS
CERAMIC
FS1
0A25 AS
CERAMIC
SW1
RESET
P9
ENABLE
PROTECT
DISABLE
P5
ENABLE
BUZZER
DISABLE
COMM TOOL
P11
RL1 RL2
RED
RED
RL3 RL4
+VE 0V DRN
PP10
RX TX 0VISO DRN
ISOLATED RS232
NC C
NO DRN
COMMON FAULT
PP4
DRN
FIRE OUTPUT
PP5
EXT.EVAC.
PP8
+VE 0V DRN
CLASS
CHANGE
PP9
L1 0V DRN
LOOP END 1
PP1
L2 0V DRN
LOOP END 2
PP2
MA2+
RS485
PP3
DRNBA 24V 0V MA2- DRN
MASTER
ALARM 1
PP6
MASTER
ALARM 2
PP7
MA1+ MA1- DRN
PP10
RX TX 0V
ISO DRN
ISOLATED RS232
NC CNO DRN
COMMON FAULT
PP4
NC CNO DRN
FIRE OUTPUT
PP5
+VE
0
VDRN
EXT.EVAC.
PP8
+VE
0
VDRN
CLASS
CHANGE
PP9
L1 0V DRN
LOOP END 1
PP1
L2 0V DRN
LOOP END 2
PP2
DRN
RS485
PP3
BA 24V 0V
NC C
NO
MASTER
ALARM 1
PP6
MA1+ MA2+ MA2- DRN
MASTER
ALARM 2
PP7
MA1- DRN
P4
BATT3
P1

Device loop circuit
The device loop circuit can accept connection of addressable devices, up to 127 maximum. To maintain earth continuity on the loop,
the loop cable screen must be continued through each system device, whether the earth is connected to a device or not.
"
The loop circuit must not cover more than 10,000m2of floor area of a protected site.
A spur circuit must always be taken from the "line common" terminals of a 3-way device.
A spur must not cover more than the equivalent of one zone as defined in BS5839 Part 1.
As every device has a loop isolator, the application of more than 32 devices does not require any special consideration.
Ensure the maximum cable length between loop devices does not exceeded 250m. This is the cable distance between
previous and next device on the loop.
Installation instructions
20
L2 02
01 L1
LC
0C
L1
01
Sounder
strobe
(3-way)
L2
02
Fire panel
Spur
circuit
Earth to
metal box
IN4
OUT5
C3
SenTRI
detector
base
IN4
OUT5
C3
L1 0V
LOOP END 1
DRN
DRN L2 0V
LOOP END 2
L1
0V
Manual call point
L2
0V
MAIN CONTROL BOARD
PP2
PP1
SenTRI
detector
base
Sounder
strobe
(2-way)