C-TEC EP203 Manual

EP203
AUTOMATIC
EXTINGUISHER
PANEL
Installation and
Maintenance
Manual
Approved Document No. DFU0002032 Rev 4
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 2 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
CONTE NTS
IMPORTANT NOTES ............................................................................... 4
BASIC OVERVIEW AND KEY FEATURES.................................................... 6
INSTALLATION AND WIRING .................................................................. 9
The EP203 Panel Enclosure ........................................................................................................................9
Removing the Lid and Base PCBs...............................................................................................................9
FIRST FIX..............................................................................................11
Cable Types and Limitations ................................................................................................................... 11
Planning the Cable Entry and Distribution within the EP203 Panel ............................................... 11
Siting and Mounting the EP203 Panel .................................................................................................. 12
Mains Wiring .............................................................................................................................................. 12
Detector Circuit Wiring............................................................................................................................. 13
Sounder Circuit Wiring ............................................................................................................................. 13
Monitored Input Wiring ........................................................................................................................... 14
Auxiliary Output Wiring........................................................................................................................... 14
Remote Control Wiring ............................................................................................................................ 15
Extinguisher Output Wiring .................................................................................................................... 16
Connection to RSUs and ESUs .................................................................................................................. 18
SECOND FIX .........................................................................................19
Connecting the EP203 Panel ................................................................................................................... 19
Installing the Power Supply PCB and Output Expansion Relay Board............................................. 19
Connecting the Mains Supply .................................................................................................................. 19
Connecting the Standby Batteries.......................................................................................................... 20
Installing the Main Control PCB ............................................................................................................. 21
Connecting Circuits to the Main Control PCB ....................................................................................... 21
PROGRAMMING THE EP203 PANEL........................................................22
General User Controls (Access Level 1) .................................................................................................. 22
Authorised User Controls (Access Level 2)............................................................................................. 22
Engineer Controls (Access Level 3) ......................................................................................................... 23
Accessing and using the Engineer Controls .......................................................................................... 23
ACCESS LEVEL 3 MENUS........................................................................24
Overview ..................................................................................................................................................... 24
Display Faults ............................................................................................................................................. 25
Display Dis/mnt .......................................................................................................................................... 25
Zones in Test .............................................................................................................................................. 25
Display RSUs................................................................................................................................................ 25
Disablements.............................................................................................................................................. 26
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 3 of 45
Commissioning ........................................................................................................................................... 28
Engineering ................................................................................................................................................ 32
FAULT DIAGNOSIS................................................................................35
Overview ..................................................................................................................................................... 35
Detection Zone Faults............................................................................................................................... 35
Sounder Faults ........................................................................................................................................... 36
Power Supply Faults.................................................................................................................................. 36
System Faults.............................................................................................................................................. 39
GENERAL MAINTENANCE .....................................................................40
APPENDICES ........................................................................................41
APPENDIX 1 – Standby Battery Calculation Guide .............................................................................. 41
APPENDIX 2 – Extinguisher Control Panel Wiring Diagram.............................................................. 42
APPENDIX 3 – Extinguishing Operation Flowchart ............................................................................. 43
APPENDIX 4 – Technical Specification ................................................................................................... 44
FIGUR E S
Figure 1 : Overview of Access Level Menus...................................................................................................................7
Figure 2 : Location of Enclosure Mounting Holes and Knockouts ...................................................................... 11
Figure 3 : Mains Wiring..................................................................................................................................................... 12
Figure 4 : Typical Detector Circuit Wiring................................................................................................................... 13
Figure 5 : Typical Sounder Circuit Wiring ................................................................................................................... 13
Figure 6 : Typical Monitored Input Wiring................................................................................................................. 14
Figure 7 : Typical Remote Control Input Wiring ...................................................................................................... 15
Figure 8 : Typical Solenoid Circuit Wiring................................................................................................................... 16
Figure 9 : Typical Igniting Actuator Circuit Wiring.................................................................................................. 17
Figure 10 : Typical RSU Circuit Wiring.......................................................................................................................... 18
Figure 11 : Typical ESU Circuit Wiring.......................................................................................................................... 18
Figure 12 : Power Supply PCB Layout and Connection Details ........................................................................... 20
Figure 13 : Battery Location and Connection Details ............................................................................................. 20
©2008. No responsibility can be accepted by the manufacturer or distributors of this range of extinguisher panels for any
misinterpretation of an instruction or guidance note or for the compliance of the system as a whole. The manufacturer’s
policy is one of continuous improvement and we reserve the right to make changes to product specifications at our
discretion and without prior notice. E&OE.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 4 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
IMPORTANT NOTES
THI S EQU IPMENT MU ST ONL Y BE INSTALLED AND MAI NTAINED BY A
SUITA BL Y S K I LLED AND TECHN ICA LL Y C OMPETENT PERS ON .
Equipment Guarant ee
This equipment is not guaranteed unless the complete system is installed and
commissioned in accordance with the laid down national standards by an approved and
competent person, or organisation.
This product has been manufactured in conformance with the requirements of
all applicable EU Council Directives
Items supplied with the EP203 panel:
•Installation and Maintenance Manual – Document No. DFU0002032 (this manual)
Note : This manual MUST NOT be left accessible to the general user.
•User Manual/Log Book – Document No. DFU0002031
•Shortform Installation Instructions – Document No. DFU0002033
•Accessory pack containing the following items:
1 x Allen key (for unfastening/securing the panel lid)
12 x 6K8, 0.25W (end-of-line resistors)
1 x 1A HRC, 20mm ceramic fuse (spare mains supply fuse F1)
1 x 5A F, 20mm glass fuse (spare battery fuse F2)
1 x set of battery connection leads (red lead, black lead, green jump lead)
1 x set of links for PLK1 & PLK2.
Sys tem Design
Fire alarm system and extinguisher system design are beyond the scope of this
document. A basic understanding of general system components and their use is
assumed.
To ensure a reliable system and limit the consequences of faults, we strongly
recommend that a suitably qualified and competent person is consulted in connection
with the design of the fire alarm and extinguisher system and that the system is
commissioned and maintained to local design and installation regulations. The fire
officer concerned with the property should be contacted at an early stage in case he has
any special requirements.
The EP203 Automatic Extinguisher Panel (hereafter called the EP203 panel) is compliant
with the following European standards:
•EN 12094-1 – Fixed firefighting systems – Components for gas extinguishing
systems - Part 1: Requirements and test methods for electrical automatic control
and delay devices
•EN54-2 and EN54-4 – Fire Detection and Fire Alarm Systems –
Control and Indicating Equipment (EN54-2); Power Supply Equipment (EN54-4).
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 5 of 45
In addition to the basic requirements of EN12094-1, the EP203 panel meets the
following criteria:
•EN12094-1 Section 4.17 ‘Delay of extinguishing signal (option with
requirements)’ delay time from 0 to 60 seconds.
•EN12094-1 Section 4.18 ‘Signal representing the flow of extinguishing agent
(option with requirements)’ to indicate the flow of the extinguishing agent.
•EN12094-1 Section 4.19 ‘Monitoring of the status of components (option with
requirements)’ by way of a low pressure switch input.
•EN12094-1 Section 4.20. ‘Emergency hold device (option with requirements)’ to
enable the extinguishant delay time to be extended.
•EN12094-1 Section 4.21 ‘Control of flooding time (option with requirements)’ to
deactivate the releasing output after a set time period.
•EN12094-1 Section 4.23 ‘Manual only mode (option with requirements)’ to
disable the release of extinguishant via automatic detection devices.
•EN12094-1 Section 4.26 ‘Triggering of equipment outside the system (option
with requirements)’ by way of first and second stage contacts, etc.
•EN12094-1 Section 4.27 ‘Emergency abort device (option with requirements)’ to
inhibit the extinguishing signal until the emergency abort device has been
deactivated.
•EN12094-1 Section 4.30 ‘Activation of alarm devices with different signals
(option with requirements)’ to indicate pre-discharge and released warnings
using different sounds.
In addition to the basic requirements of EN54-2, the EP203 panel meets the following
criteria:
•EN54-2 Section 7.8 ‘Fire alarm devices (option with requirements)’ to enable an
audible warning to be sounded throughout the premises upon the detection of a
fire condition or the operation of a manual call point.
•EN54-2 Section 7.11. ‘Delay of the actioning (option with requirements)’ of fire
alarm devices (sounders) so that an alarm may be verified before a premises is
evacuated.
•EN54-2 Section 7.13. ‘Alarm counter (option with requirements)’ to record the
number of instances the panel enters the fire alarm condition.
•EN54-2 Section 10 ‘Test condition (option with requirements)’ to allow the
automatic resetting of zones in alarm for testing purposes.
In addition to the requirements of EN54-2, the EP203 panel has volt-free relay contacts
for fire and local fire that operate upon a fire condition. These are to be used for local
control and signaling.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 6 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
BASIC OVERVIEW AND KEY FEATURES
The EP203 panel acts as both a conventional fire alarm panel and an automatic
extinguisher control panel. The panel is easy to install, programmable and incorporates
a user-friendly LCD interface.
The EP203 panel’s features include the following:
•Time-stamped event log
•Abort and hold functions for cancelling, or delaying the extinguishant release sequence
•Very low quiescent current drain on mains fail (40mA approx.)
•128 x 64 pixel graphic LCD unit with two-colour backlight, provides a user-friendly
interface for presentation of information, interrogation of data and programmable
functions
•Front-panel mounted extinguisher release button and two keyswitches; one to enter
access mode and one to toggle between automatic/manual modes of operation
•Powerful 3A, EN54-4 compliant, switch mode PSU rated @230Vac, 50/60Hz that
combines the functions of a power supply unit, battery charging unit and battery
monitoring unit
•Three-zone conventional detector circuits, line monitored for open and short circuit
faults. Any zone combination can be programmed to activate an alarm and initiate
the extinguishant release sequence
•Three conventional alarm sounder circuits (two x 1st stage, one x 2nd stage), line
monitored for open and short circuit faults
•Monitored inputs for:
Manual Release, Flow Switch, Low Pressure, Mode, Hold and Abort
•Auxiliary outputs for:
Fire, Local Fire, Extract, 1st Stage, 2nd Stage, Fault
•Extinguishing output supports up to 2 x solenoids, or multiple ‘Metrons™’
•Adjustable extinguishant release time delay, duration and flooding time
•Alarm counter to record the number of times the panel has been in an alarm state
•Optional Output Expansion Relay Board providing additional volt-free relay outputs
for: Reset, Mode, Discharged, Hold and Abort
•Connections for up to eight Remote Status Units (RSU) which provide remote
indication of system status on an LCD unit with mode select and manual extinguisher
release
•Connections for up to eight Economy Status Units (ESU) to provide remote indication
of system status with mode select.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 7 of 45
•Pushbutton and keyswitch entry to three access levels (displayed on the LCD unit).
Access Level 1 (AL1) is for general users, Access Level 2 (AL2) is for authorised users
and Access Level 3 (AL3) is for engineers. See Figure 1, below.
Note : When selected, menus and sub-menus change from Title Case to UPPERCASE.
Figure 1 : Overview of Access Level Menus
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 8 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
•System expansion connections for the following add-ons:
O ut p u t Ex pa ns i on Re la y B oa rd - Pa rt N o. E P212
a) One Output Expansion Relay Board can be connected.
b) Provides up to five volt-free relay outputs (Reset, Mode, Discharged, Hold, Abort).
c) Mounted inside the EP203 panel.
d) Instruction document no. DFU0000212.
Remote Statu s Uni t (RSU) - Part No. EP210S/EP210F
a) Up to eight RSUs can be connected.
b) Provides remote indication of system status.
c) Flush-mounted (EP210F), or surface-mounted (EP210S).
d) Mode (Manual, or Manual & Automatic).
e) Manual release of extinguishant.
f) 128 x 64 pixel graphic LCD unit with two-colour backlight.
g) Three monitored inputs (Abort, Hold and Mode).
h) 2-wire RS485 + 2-wire power (24V).
i) Instruction document no. DFU0000210.
Economy Statu s Uni t (ESU) - Part N o. EP211
a) Up to eight ESUs can be connected.
b) Provides remote indication of extinguishant “release
imminent”.
c) Single-gang mounting arrangement.
d) Mode (Manual, or Manual & Automatic).
e) 2-wire power (24V) + 2-wire mode select
f) 6K8 EOL resistor fitted in last EP215 allows wiring to be
monitored for open and short-circuit faults
g) Instruction document no. DFU0000211.
S ys te m H ol d O f f / A b o rt B u t to n - Part N o . E P215
a) Monitored input to the EP203 panel.
b) Used to either delay, or cancel the extinguishant release
sequence (dependent on connection to EP203 panel).
c) Connects to EP203 panel via 2-wire connection. The
remaining EP215 units are then daisy-chained.
d) Single-gang, surface-mounted unit.
e) 6K8 EOL resistor fitted in last EP215 allows wiring to be
monitored for open and short-circuit faults.
f) Instruction document no. DFU0215000.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 9 of 45
INSTALLATION AND WIRING
The EP203 Panel Enclosure
The EP203 panel enclosure comprises of a plastic detachable lid and metal base unit
containing:
•Main Control PCB - provides all the connections for the system’s detector circuits,
sounder circuits, monitored inputs and auxiliary outputs. It also provides the
engineer with access to a wide range of commissioning and engineering menus
•Power Supply PCB - provides connections to the mains supply. It is switch mode
type, rated @230Vac, 50/60Hz that combines the functions of a power supply
unit, battery charging unit and battery monitoring unit
•Output Expansion Relay Board (optional) - provides up to five volt-free relay
outputs.
The Main Control PCB is mounted on a metal bridge and the Power Supply PCB and
optional Output Expansion Relay Board are mounted in the metal base unit underneath
the Main Control PCB.
Removing the Lid and Base PCBs
To protect the electronics from damage and to expose the base mounting holes, the
panel’s lid and PCBs should be removed prior to first fix installation. See steps below.
Ant i - sta t ic ha nd li ng g u i de l i ne s
Ensure that the following electro-static handling precautions are taken
immediately prior to handling the panel’s PCBs, or any other static-sensitive
components. Before handling any static-sensitive items, operators should rid
themselves of any personal electro-static charge by momentarily touching any sound
connection to safety earth, e.g. a radiator. Always handle PCBs by their sides and avoid
touching the legs of any components.
1. Take the panel out of its packing box and undo the two lid screws using the Allen key
supplied in the accessory pack.
2. Open the plastic lid, pull out the lid’s two fixing pins and take off the lid.
3. Slacken the four M4 retaining nuts on the metal bridge and slide the bridge (and
mounted Main Control PCB) up and over the mounting pillars, taking care not to
damage any of the components.
4. Disconnect the telecoms-style connecting cables from PL3 on the Power Supply PCB,
and from PL1 on the Output Expansion Relay Board (if fitted). Make sure that these
cables remain connected to the Main Control PCB to prevent them being misplaced.
Note : Care should be taken when detaching this connector to depress the locking tab
to prevent damage.
5. Pull the Power Supply PCB’s earth strap (green/yellow) off the spade connector at the
main chassis earth point on the base unit.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 10 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
6. Carefully remove the two retaining screws on the Power Supply PCB and slide the PCB
up and over its mounting pillars, taking care not to damage any of the components.
7. If an Output Expansion Relay Board is fitted, carefully remove the two retaining
screws on the board and slide the board up and over its mounting pillars, taking care
not to damage any of the components.
8. Store the PCBs in a clean, dry place that is free from vibration, dust, and excessive
heat. Storing the PCBs in a suitable cardboard box will also guard them against
mechanical damage.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 11 of 45
FIRST FIX
Cable Types and Limitations
Consult Clause 26 of BS 5839: Pt 1: 2002 Fire Detection and Alarm Systems for Buildings
(Code of Practice for System Design, Installation, Commissioning and Maintenance) for
detailed information on cables, wiring and other interconnections.
All system wiring should be installed in accordance with the current edition of the IEE
Wiring Regs, (BS7671), or other national standards of installation should be used where
applicable.
To comply with EMC (Electro Magnetic Compatibility) regulations and to reduce the risk
of electrical interference in the system wiring, we recommend the use of fire-resistant
screened cables throughout the installation.
Planning the Cable Entry and Distribution within the EP203 Panel
Note : The detector and alarm sounder circuit cabling is
classed as low voltage and must be segregated away
from mains voltages. Careful planning is needed to
ensure this. See Figure 2 below for guidance.
We recommend that field wiring tails of at least 20-
30cm are left inside the EP203 panel enclosure to
ensure adequate connection to the EP203 panel
terminals.
All cables should be fed into the EP203 panel via the
knockouts provided on the top of the base unit.
Knockouts should be removed with a sharp, light tap
using a flat 6mm broadsided screwdriver, as shown in
diagram (right).
Always ensure that if a knockout is removed, the hole is filled with a good quality
20mm cable gland. Any unused knockouts must be securely blanked off.
Figure 2 : Location of Enclosure Mounting Holes and Knockouts
These knockouts are used for
incoming mains cable in order to
maintain cable segregation.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 12 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
Siting and Mounting the EP203 Panel
The EP203 panel enclosure can be surface, or semi-flush mounted. It must be sited
indoors on a dry, flat surface in an area not subject to conditions likely to affect its
performance, e.g. damp, salt-air, water ingress, extremes of temperature, physical
abuse, etc. It should be sited at a height where it is easily accessible and in a prominent
position within the building. Ideally, the LED indicators and LCD unit on the front of the
enclosure should be at eye level.
To expose the EP203 panel’s mounting holes, the lid and base PCBs have to be removed
(see Page 9). Using the five mounting holes provided, fix the base securely onto the
wall. The mounting holes are suitable for use with No.8-10, or 4-5mm countersunk
screws. Assess the condition and construction of the wall and use suitable screw fixings.
Note : The central mounting hole can be used to temporarily hang the base unit so it
can be leveled and its remaining fixing points marked for drilling.
Any dust, or swarf created during the fixing process must be kept out of the enclosure.
Mains Wiring
The requirement for the mains supply to the EP203 panel is fixed wiring, using 3-core
cable (no less than 1mm2and no greater than 2.5mm2), or a suitable three-conductor
system, fed from an isolating switched spur, fused at 3A. This should be secure from
unauthorised operation and be marked ‘FIRE ALARM: DO NOT SWITCH OFF’. The mains
supply must be exclusive to the EP203 panel.
(As an alternative to a switched fused spur, a double-pole isolating device may be used
providing it meets the appropriate national wiring regulations. See Figure 3 below.
Note : The mains supply wiring MUST be segregated away from the detector and alarm
sounder circuit cabling that is classed as low voltage.
Figure 3 : Mains Wiring
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 13 of 45
Detector Circuit Wiring
Note : See Appendix 4 (Technical Specification) for the detector circuit specification.
The EP203 panel can power three conventional detector circuits at 21-28Vdc. Each
detector circuit must be wired as a single, radial circuit with no spurs. Detector bases
wi th i nteg ral c ont i nu i ty d i odes M UST NOT be used a nd man ua l cal l po in t s
MUST N OT be c onnected to t he detec tor c i rc ui t s.
Note : The total number of detectors affects the system standby time and should be
taken into account when selecting the standby battery. See Appendix 1 for standby
battery calculation.
Figure 4 : Typical Detector Circuit Wiring
A 6k8 end-of-line resistor (supplied in the accessory pack) must be connected across the
terminals of the last device on each circuit to allow the wiring to be line monitored for
open and short circuit faults.
Note : Unused circuits must have a 6k8 resistor fitted at the EP203 panel terminals.
The wiring for each detector circuit should be connected to the relevant 5mm connector
block on the Main Control PCB (Zone 1, Zone 2, or Zone 3) and their screens terminated
at the EP203 panel’s base earth post. For more specific device wiring information, refer
to the manufacturers’ own instructions.
Sounder Circuit Wiring
Note : See Appendix 4 (Technical Specification) for the sounder circuit specification.
The EP203 panel can power three conventional polarised sounder circuits at 19-28Vdc.
Each sounder circuit must be wired as a single, radial circuit with no spurs.
Figure 5 : Typical Sounder Circuit Wiring
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 14 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
A 6k8 end-of-line resistor (supplied in the accessory pack) must be connected across the
terminals of the last device on each circuit to allow the wiring to be line monitored for
open and short circuit faults.
Note : Unused circuits must have a 6k8 resistor fitted at the EP203 panel terminals.
The wiring for each alarm sounder circuit should be connected to the relevant 5mm
connector block on the Main Control PCB (Sound 1A, Sound 1B, Sound 2nd Stage) and
their screens terminated at the EP203 panel’s base earth post. For more specific device
wiring information, refer to the manufacturers’ own instructions.
Monitored Input Wiring
Note : See Appendix 4 (Technical Specification) for the monitored input specification.
Six monitored input connections are available at the EP203 panel:
Manual Release, Flow Switch, Low Pressure, Mode, Hold and Abort.
Figure 6 : Typical Monitored Input Wiring
A 6k8 end-of-line resistor (supplied in the accessory pack) must be connected across the
terminals of each device on each circuit to allow the wiring to be line monitored for
open and short circuit faults.
Note : Unused circuits must have a 6k8 resistor fitted at the EP203 panel terminals.
The wiring for each input should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the EP203 panel’s base earth post.
Auxiliary Output Wiring
Note : See Appendix 4 (Technical Specification) for the auxiliary output circuit
specification.
The wiring for each output should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the EP203 panel’s base earth
post.
Six auxiliary relays provide volt-free changeover contacts, as detailed below:
•Fi re:Relay operates on activation of a fire condition in a zone, or by pressing
the Silence/Resound Sounder pushbutton. Relay will not operate on activation of
a remote control AL input. The relay remains activated until the panel is reset.
•Local F i re: Relay operates on activation of a fire condition in a zone, or by
pressing Silence/Resound Sounder pushbutton.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 15 of 45
•1s t S tage A la rm : Relay operates on activation of a zone that is part of the
extinguisher release circuitry, or when the panel mounted (or remote manual)
release pushbutton is pressed. The relay remains activated until the panel is
reset.
•2nd S ta ge Ala rm : Relay operates when the EP203 panel has entered the
activated condition, i.e. the extinguisher release timer has started. The relay
remains activated until the panel is reset.
•Fau l t: This relay output is normally energised. When a fault occurs, the output
turns off to ensure failsafe operation even in the event of total power loss.
•Ex tract: Relay operates when an Access Level 2 user selects Start Extract Fan
after the flooding time has elapsed (without a reset). This allows a flooded area
to be vented of extinguishant.
Note : The Extract Option is enabled/disabled in the Commissioning menu at
Access Level 3.
Remote Control Wiring
If required, some functions of the EP203 can be remotely controlled. The operating
inputs of the remote equipment is restricted to an Access Level 2 user. The wiring for
each input should be connected to the relevant 5mm connector block on the Main
Control PCB and their screens terminated at the EP203 panel’s base earth post.
The remote input abbreviated functions at the Main Control PCB are listed below:
•+/ – : Remote supply
•SI L :Silence Alarm
•AL:Sound Alarm
•FLT: Fault – Generates a general fault and operates the fault relay.
•RST: Reset – Resets the system to normal mode.
Figure 7 : Typical Remote Control Input Wiring
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 16 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
Extinguisher Output Wiring
Note : See Appendix 4 (Technical Specification) for the extinguisher output circuit
specification.
The wiring for each output should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the EP203 panel’s base earth post.
The EP203 panel’s extinguishant outputs supports up to two solenoids, or multiple
‘Metrons™’ (typically up to four).

S ole no i d W i r i ng
The extinguishant output is capable of supplying up to 1 amp for the maximum duration
(5 mins.) to a solenoid. To ensure that the current rating of the extinguishant output is
not exceeded:
•If one solenoid is used it must have a resistance greater than 30 ohms
•If two solenoids are used each solenoid must have a resistance greater than 60 ohms.
Note : The number of EP214 System Line Terminators is programmed by an Access Level 3
user in the Commissioning menu (Ext. O/P EOLs sub-menu).
Figure 8 : Typical Solenoid Circuit Wiring
W i r i ng f or o ne s o le noi d :
W i r i ng f or t w o s o le no id s :
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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 17 of 45
I gn i t i ng A c tua tor (M et r on ™ ) W i r in g
The extinguishant output is capable of supplying up to 3 amps for the maximum
duration (50 milliseconds) to an igniting actuator.
The total series resistance of the actuator(s) and wiring should NOT exceed 7 ohms.
Figure 9 : Typical Igniting Actuator Circuit Wiring
W i r i ng f or o ne ac tua tor :
Wi r in g f or m ul t i ple ac tua tors :
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 18 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
Connection to RSUs and ESUs
RSUs require a 4-wire connection (2-wire power, 2-wire RS485) from the EP203 panel
that connects to each unit and is daisy chained onto the next (see Figure 10 below).
The RSU abbreviated functions at the Main Control PCB are listed below:
•+/ – : 2-wire power supply (24V); A/B:2-wire RS485 data connection
Figure 10 : Typical RSU Circuit Wiring
Each RSU has a pcb-mounted DIL switch and must be
allocated a unique address between 1 and 8. See
right for DIL switch settings (=DIL switch ON/UP).
Each RSU has a pcb-mounted Display Contrast (VR1)
that can be adjusted to suit the contrast of the
units’ LCD display.
ESUs require a 2-wire 24V power connection and
2-wire mode select from the EP203 panel that
connects to each unit and is daisy chained onto the
next (see figure 11 below).
A 6k8 end-of-line resistor (supplied in the accessory
pack) must be connected across the terminals of the
last ECU on each circuit to allow the wiring to be
line monitored for open and short circuit faults.
Note : Unused circuits must have a 6k8 resistor fitted at the EP203 panel terminals.
Figure 11 : Typical ESU Circuit Wiring
DIL S wi t ch S et t i n g s
R SU
A dd r es s
8
4
2
1
1




2




3




4




5




6




7




8




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EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 19 of 45
SECOND FIX
Connecting the EP203 Panel
CA UT I ON : D O N O T u se a h i gh v o l ta ge i n su la ti o n te s te r w i t h a ny elect ro nic
devices connected.
Check all devices on the detector and sounder circuits are correctly connected and that
cable integrity is verified throughout the installation. Faults occurring in the wiring,
which are not identified at this stage, will almost certainly result in spurious and
intermittent faults when the equipment is energised.
Installing the Power Supply PCB and Output Expansion Relay Board
WARNING : WHEN C O NNECTED, THE POWER S UPPLY PCB ST ORES V OLTAGES
UP TO 400V dc A ND M AY BE L ETHAL I F T OU CHED. D O N OT TO UCH THE PCB
WHILST THE (HAZARD OU S V OLTA GES PRESENT) RED LED I S LIT O N THE PCB.
The component layout of the Power Supply PCB is shown in Figure 12.
1. Slide the Power Supply PCB over and downwards securing onto its mounting pillars,
taking care not to damage any of the components.
2. Fix the two retaining screws on the Power Supply PCB. Do not overtighten the screws
otherwise their threads will strip.
3. Attach the Power Supply PCB’s earth strap (Green/Yellow) to the spade connector at
the main chassis earth point on the base unit.
4. If an Output Expansion Relay Board is fitted, carefully slide the board over and
downward securing onto its mounting pillars, taking care not to damage any of the
components.
5. Fix the two retaining screws on the Output Expansion Relay Board. Do not
overtighten the screws otherwise their threads will strip.
Connecting the Mains Supply
The general requirement for the mains supply to this equipment is described on Page 12.
WARNING : D O N OT ATTEMPT TO C ONNECT THE MAI N S SUPPLY TO THE
POWER SUPPLY PCB UNT IL THE INSTALLATION I S C OMP LETE AND ALL PCBs
ARE SECURELY INSTALLED IN THE EP203 PANEL .
The incoming mains cable should enter the EP203 panel through the knockouts at the
top right hand side of the enclosure and terminated at the connector block (CONN1) on
the Power Supply PCB. Make sure the mains earth wire is connected directly to this
connector block and NOT to the secondary base earth post (which is provided for
connecting detector and sounder circuit screens).
The Power Supply PCB’s earth strap MUST be connected to the spade on the chassis
earth post before operation.
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EP203 AUTOMATIC EXTINGUISHER PANEL
Page 20 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
Figure 12 : Power Supply PCB Layout and Connection Details
Connecting the Standby Batteries
CA UTI ON : A lway s di sp ose o f u sed ba tter ie s in acco rdance w ith the ba tter y
ma nu fact ure r s ’ i n s t r uc t i o ns . T he re i s a r i sk o f e xp lo s io n i f ba t te r ie s a re
replaced by an inc orrec t t ype.
Two, new high quality and fully charged 12Vdc, 7Ahr valve regulated lead-acid (VRLA)
type batteries are required as the emergency standby power supply for the EP203
panel. The capacity of the batteries may be lesser-rated dependant upon the required
standby time. To calculate the batteries required for any given standby period, refer to
the calculation guide in Appendix 1.
The batteries should be connected in series and located in the EP203 panel’s enclosure
as shown in Figure 13, below.
Note : The battery connection leads (red
lead, black lead and green link wire) are
supplied in the accessory pack.
The EP203 panel’s sophisticated battery
monitoring unit protects the batteries
against deep discharge by activating a
cut off circuit when the standby supply
voltage reaches approx. 21Vdc. If
batteries are not fitted, are discharged,
or in poor condition, a PSU fault will be
displayed at the EP203 panel.
Figure 13 : Battery Location and Connection Details
Ma ins I n put ( CO N N1 )
L = Live, N = Neutral, = Earth
CL AS S 1 E QU I PME NT M U ST B E
EARTHED. Connect incoming mains earth
wire to the earth terminal and NOT to
the base earth post.
PSU Earth Strap
The PSU earth strap connects the
PCB to the base earth post.
Ha zardous Vo lta ges Prese nt LED
When lit red, hazardous voltages are
present on components in the shaded
area of the PCB. DO NOT TOU C H.
I n co m i ng Ma i ns Cab le
Must be segregated from other
cables and only enter the panel
through the top RHS knockouts.
Con nect or (PL3)
Connects to Main Control PCB.
Battery I n put ( CO N N6 )
Connects to VRLA batteries.
Contro l L ink (PLK2)
Fit PLK2 for 3.5 to 12Ahr,
NOT fitted for 1 to 3.5Ahr.
Contro l L ink (PLK1)
If batteries NOT used, fit PLK1.
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