Ziton ZP3-ECU User manual

ZP3-ECU Extinguishing
Control Unit User Guide
P/N 503-0800ZE-U-04 • ISS 31JUL23

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©
2023 Carrier. All rights reserved.
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patents
The
ZP3-ECU 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.
Revision
04
Conformity
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 th
is 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
designated collection points. For more in
formation 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 designated 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.

ZP3-ECU Extinguishing Control Unit User Guide i
Content
Important information ii
System limitations iv
Chapter 1 Introduction 1
Control of fire extinguishing systems 2
ZP3-ECU control unit overview 3
ZP3-ECUS status unit overview 5
Chapter 2 Operation 7
ZP3-ECU Extinguishing Control Unit 8
ZP3-ECUS Extinguishing Status Unit 16
Chapter 3 Maintenance 19

ii ZP3-ECU Extinguishing Control Unit User Guide
Important information
This is the user guide for the ZP3-ECU Extinguishing Control Unit (ECU). Read
these instructions and all related documentation entirely before installing or
operating this product.
Product compatibility
The ZP3-ECU is compatible for use with the following addressable fire alarm
control panels running the Ziton protocol:
• ZP3 Series
• ZP2 Series
• ZP2-A Series
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.

ZP3-ECU Extinguishing Control Unit User Guide iii
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:
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 ZP3-ECU Extinguishing Control Unit User Guide
System limitations
Sensing equipment
The extinguishing control system equipment is reliant on external detection
equipment such as detectors, call points and fire control panels in order to
activate effective fire alarms. Incorrect positioning of the detectors, limitations in
the detector itself or incorrect application can result in failure of the detection
process.
Power faults
In the event of a mains fault the fire alarm control panel will continue to operate,
drawing power from the installed batteries. The length of time that the system
can continue to operate on batteries will depend on the control panel used, the
batteries installed, and the system load.
Once the batteries are exhausted the fire system will no longer detect fires and
the extinguishing control system will be unable to extinguish fires (until such time
as mains power is reestablished).
Bells and sirens
When the extinguishing control system causes an extinguishing discharge, the
appropriate fire bells and sirens sound. These could prove useless unless they
are situated in close proximity to the people they are supposed to alert.
Extinguishing system design
The extinguishing control system only controls the extinguishing activating
circuits. The design of the piping nozzles extinguishing pressure etc. is the
responsibility of the extinguishing system design engineer.
Maintenance system
As with most extinguishing systems the most common cause of their malfunction
is lack of maintenance. A full maintenance plan should be carried out on a
regular basis as described in Chapter 3 “Maintenance” on page 19.

ZP3-ECU Extinguishing Control Unit User Guide 1
Chapter 1
Introduction
Summary
This chapter provides a general introduction to the ECU.
Content
Control of fire extinguishing systems 2
ZP3-ECU control unit overview 3
ZP3-ECUS status unit overview 5

Chapter 1: Introduction
2 ZP3-ECU Extinguishing Control Unit User Guide
Control of fire extinguishing systems
The Ziton addressable fire alarm control panels are ideally suited to operating fire
extinguishing systems that use an extinguishant such as foam, dry chemical, or
powder to combat fires in any size area. Fire extinguishing systems are
extensively used to protect risks such as computer rooms, data storage,
transformers, electrical control rooms, file storage and, essentially, any area
where the use of water is inappropriate.
The nature of extinguishing systems imposes certain criteria upon the fire
detection and control equipment. These are needed to prevent accidental
discharge, audible alarms indicating alarm and discharge, time delays to allow
evacuation of personnel from the area, shutdown of equipment and ventilation,
and the closing of doors and shutters to prevent leakage.
The Ziton extinguishing control system not only achieves these requirements, but
also includes the many advantages of advanced addressable fire detection.
A major feature of the system is that all functions are software controlled. All
actions carried out at the ECU (automatic and manual) are reported to the main
fire alarm control panel via the addressable loop
Figure 1: Extinguishing system configuration

Chapter 1: Introduction
ZP3-ECU Extinguishing Control Unit User Guide 3
ZP3-ECU control unit overview
The ZP3-ECU Extinguishing Control Unit (Figure 2 on page 4) is designed to
connect to a Ziton addressable fire alarm detection system and control a fire
extinguishing system. It interfaces to the fire detectors of the fire detection
system and provides secure "coincidence connection" control of the
extinguishing system.
The self-contained unit has key switches for automatic or manual selection, as
well as lock-off for maintenance. Other controls are a manual extinguishant
release, an alarm silence button, extinguishant hold off button and indicators for
automatic, manual, locked-off, fault, fire, extinguishant discharged, and reset
status.
Outputs are provided for extinguishant release valves or actuators, audible fire
alarm sounders, separate extinguishant release sounders, visual exit signs, door
closing, and shutter release. Also provided are facilities for remote manual
extinguishant release, and remote operation and status functions.
Extensive monitoring is provided for many functions, including power supply,
fuses, and operation. Field wiring is monitored for extinguishant release
valves/actuators, fire sounder, extinguishant sounder, and manual extinguishant
release units.
Optional monitoring is provided for low extinguishant pressure, extinguishant
release verification, and locked/unlocked entry door status of the protected area.
The ECU is under the control of the fire alarm control panel. It communicates
with the fire alarm control panel every two seconds and reports the status of all
functions. A fault signal is raised at the fire alarm control panel for any out-of-
normal condition, which exists at the ECU. The fire alarm control panel indicates
the type of fault, and where applicable, reports the condition to a building
management system. Remote status of each ECU – automatic, manual, fault,
locked-off, or extinguishant discharged can be displayed at the fire alarm control
panel without additional wiring.
Each ECU operates one fire extinguishing system. Any number of ECUs may be
used, with each unit requiring two system addresses. The system is field
programmable, with functions such as detector cross-mapping, automatic
extinguishant release delay, selection of delay/no delay for manual extinguishant
release, and output relay control being fully configurable.

Chapter 1: Introduction
4 ZP3-ECU Extinguishing Control Unit User Guide
Figure 2: ZP3-ECU Extinguishing Control Unit

Chapter 1: Introduction
ZP3-ECU Extinguishing Control Unit User Guide 5
ZP3-ECUS status unit overview
The ZP3-ECUS Extinguishing Status Unit (Figure 3 below) is designed to
connect to a ZP3-ECU Extinguishing Control Unit.
The status unit has key switches to enable remote control of the ECU for
automatic or manual selection, as well as lock-off for maintenance. Other
controls are manual extinguishant release via the callpoint, alarm silence push
button, as well as an extinguishant hold off more time button. Indicators mimic
those on the ECU for automatic, manual, locked-off, extinguishant discharged,
and reset status.
Manual extinguishant release facilities are monitored from one status unit to
another with an end-of-line resistor connected at the unit furthest from the ECU.
This resistor can be connected by means of a link.
Up to ten status units may be attached to a single ECU.
Figure 3: ZP3-ECUS Extinguishing Status Unit

Chapter 1: Introduction
6 ZP3-ECU Extinguishing Control Unit User Guide

ZP3-ECU Extinguishing Control Unit User Guide 7
Chapter 2
Operation
Summary
This chapter provides an overview of the ECU features and operation functions.
Content
ZP3-ECU Extinguishing Control Unit 8
Normal operation 9
Fire operation – manual extinguishing 9
Fire operation – automatic extinguishing 10
The Automatic/Manual key switch 12
The Locked-off/Reset key switch 13
Fault conditions 13
Delay time settings 13
The Hold Off Extinguishant Release button 14
ZP3-ECUS Extinguishing Status Unit 16
Controls and indicators 16
Operation 17

Chapter 2: Operation
8 ZP3-ECU Extinguishing Control Unit User Guide
ZP3-ECU Extinguishing Control Unit
Controls and indicators
Figure 4: ZP3-ECU controls and indicators
1. Fire LEDs
2. Fault LEDs
3. Locked Off/Reset LEDs
4. Power On LED
5. Locked Off/Reset key switch
6. Automatic mode LEDs
7. Automatic/Manual mode key switch
8. Manual mode LEDs
9. Silence button
10. Hold Off Extinguishant Release button
11. Hold Off Extinguishant Release LED
12. Extinguishant Discharged LEDs
13. Extinguishant Discharge Pending LED
14. Extinguishing manual call point

Chapter 2: Operation
ZP3-ECU Extinguishing Control Unit User Guide 9
Normal operation
Under normal operating conditions the following indications exist:
• Yellow Automatic mode LEDs (Figure 4, item 6) ON if key switch (Figure 4,
item 5) in vertical position
–OR–
Green Manual mode LEDs (Figure 4, item 8) ON if key switch (Figure 4,
item 5) in horizontal position
• Green Power On LED (Figure 4, item 4) ON
• No audible alarms sounding
Fire operation – manual extinguishing
Caution: The guidelines below are given for guidance only. You must comply
with your own fire drill instructions and local codes or practice.
The extinguishing sequence can be initiated manually if fire is detected in the
protected area. This can be done with the ECU in any mode except Locked Off
mode.
Manual extinguishing initiation
1. Evacuate all personnel from the protected area.
2. Lift the flip cover and push the resettable element on the extinguishing
release manual call point (Figure 4, item 14) to manually activate the
extinguishing alarm. Leave the area of the ECU (if inside the protected area).
System response to manual extinguishing Initiation
• The extinguishant discharge sounder sounds.
• Any plant/ventilation, etc. connected to the ECU shuts down, and doors and
openings automatically close.
• The extinguishant is discharged. This action might be instantaneous or occur
after a time delay depending on set-up.
• The two red Extinguishant Discharged LEDs (Figure 4, item 12) illuminate on
the ECU.
• The event is displayed on the fire alarm control panel display with the zone
number and loop address of the ECU.
• If a printer is connected to the fire alarm control panel then the event details
are printed.

Chapter 2: Operation
10 ZP3-ECU Extinguishing Control Unit User Guide
Operator response after manual discharge of extinguishant
• Call the fire department.
• Investigate the protected area and make sure that the source of smoke or
heat has been adequately extinguished.
• Disable the ECU by turning the Locked Off/Reset key switch (Figure 4, item
5) clockwise so that the two red LEDs (Figure 4, item 3) illuminate.
• The extinguishant discharge sounder silences.
• Press the Accept/Panel Silence button followed by the Reset button on the
fire alarm control panel and the panel should return to normal.
• Notify the maintenance staff or company to have the extinguishant cylinders
refilled and actuator replaced.
• Reset the extinguishing manual call point by turning the MCP key
anticlockwise (one click).
• Turn the Locked Off/Reset key switch (Figure 4, item 5) anti-clockwise and
the ECU returns to its normal operation condition.
Fire operation – automatic extinguishing
The following information is for guidance only. You must comply with your own
fire drill instructions and local codes of practice.
As a precaution against inadvertent extinguishant discharge, the ECU is
configured so that the fire alarm has to be received from two independent
sources (coincidence connection) before automatic discharge takes place. This
can only happen if the system is set to Automatic.
Initial fire alarm
Indications
When the first device detects heat or smoke in the protected area, the following
occurs:
• The two red Fire LEDs (Figure 4, item 1) on the ECU illuminate.
• The extinguishant discharge sounder is activated.
• The buzzer on the fire alarm control panel sounds, the zone/common Fire
LEDs flash, and the event is displayed on the fire alarm control panel display
with the zone and device number.
• The red LED at the triggered device flashes.
• If a printer is connected to the fire alarm control panel then the event details
are printed.

Chapter 2: Operation
ZP3-ECU Extinguishing Control Unit User Guide 11
Operator response to initial fire alarm
1. Press the "Silence" button (Figure 4, item 9) on the ECU to silence the
sounders connected to it.
2. Press the Accept/Panel Silence button on the fire alarm control panel to
silence the panel buzzer. The zone and common fire LEDs revert to a steady
illumination and sounders connected to the control panel are silenced.
3. Investigate the alarm and remove the source of smoke or heat from the
detector which initiated the alarm.
If the fire is extensive, manual extinguishing can be initiated as under “Manual
extinguishing initiation” on page 9.
Resetting the system after clearance of initial fire alarm
1. Press the Reset button on the fire alarm control panel once the source of
smoke or heat has been removed, and any damage rectified. The panels
return to normal operating condition if the initiating source has been
adequately handled.
2. Briefly turn the Locked Off/Reset key switch, (Figure 4, item 5) on the ECU
clockwise and then anti-clockwise to reset the unit.
The unit returns to normal.
Second knock fire alarm
This sequence occurs if the ECU is set to Automatic and a second detection
device detects smoke or heat.
Indications of pending automatic discharge
• When a second device coincidence connection is detected the extinguishant
discharge sounder sounds.
• Any plant/ventilation etc. connected to the ECU shuts down.
• The preset time delay before extinguishing commences.
• Evacuate the protected area of all personnel.
Emergency stop of pending automatic extinguishing
If for any reason personnel cannot be evacuated and you need to perform an
emergency stop to the automatic extinguishing, turn the Locked Off/Reset key,
(Figure 4, item 5) clockwise to lock off the unit.

Chapter 2: Operation
12 ZP3-ECU Extinguishing Control Unit User Guide
Automatic extinguishing
• Automatic extinguishing starts once the preset time delay has lapsed.
• The two red Extinguishant Discharged LEDs, (Figure 4, item 12) illuminate on
the ECU when extinguishing has started.
• The event is displayed on the fire alarm control panel display with the zone
number and loop address of the ECU.
• If a printer is connected to the fire alarm control panel then the event details
are printed.
Operator response to automatic extinguishing
1. Call the fire department.
2. Investigate the protected area and check that the source of smoke or heat
has been adequately extinguished.
3. Press the Accept/Panel Silence button followed by the Reset button once the
source of smoke or heat has been removed. The fire alarm control panel
should return to normal if the initiating source has been adequately handled.
4. Reset the ECU by turning the Locked Off/Reset key switch, (Figure 4, item 5)
clockwise once and then anti-clockwise to the vertical position.
The extinguishant discharge sounder silences.
The two red Extinguishant Discharged LEDs, (Figure 4, item 12) go out.
Notify the maintenance staff or company to have the extinguishant cylinder re-
filled and the actuator replaced if necessary.
The Automatic/Manual key switch
Use this feature to isolate automatic release of the extinguishant, particularly
when the protected area is occupied.
Turn the Automatic/Manual key switch (Figure 4, item 7) to the horizontal position
to select Manual mode operating mode, the following occurs:
• The two green Manual mode LEDs (Figure 4, item 8) illuminate.
• If a printer is connected to the fire alarm control panel then the event details
are printed.
Turn the Automatic/Manual key switch to the vertical position to select Automatic
mode operating mode, the following occurs:
• The two yellow Automatic mode LEDs, (Figure 4, item 6) illuminate.
• If a printer is connected to the fire alarm control panel then the event details
are printed.

Chapter 2: Operation
ZP3-ECU Extinguishing Control Unit User Guide 13
The Locked-off/Reset key switch
The ECU can be disabled while the system is being maintained in order to
prevent accidental activation of extinguishant.
Turn the Locked Off/Reset key switch (Figure 4, item 4) clockwise to the
horizontal position to disable the unit, the following occurs:
• The two red Locked Off/Reset LEDs (Figure 4, item 3) illuminate.
• If a printer is connected to the fire alarm control panel then the event details
are printed.
Turn the Locked Off/Reset key switch anti-clockwise to the vertical position to
enable the ECU once maintenance has been completed. The two red Locked
Off/Reset LEDs go out and the event details are printed (if a printer is
connected).
Fault conditions
The following takes place if a fault occurs on the extinguishing control system:
• The two yellow Fault LEDs (Figure 4, item 2) on the ECU illuminate.
• The panel buzzer on the fire alarm control panel sounds, the common Fault
LED illuminates, and the display shows a fault message (with the zone
number and loop address).
• If a printer is connected to the fire alarm control panel then the event details
are printed.
• Press the Accept/Panel Silence button on the fire alarm control panel to
silence the panel buzzer.
• Notify the maintenance staff or company to have the fault investigated and
rectified.
• Press the Accept/Panel Silence button then the Reset button on the fire alarm
control panel after clearance of the fault. The panel should return to normal.
Delay time settings
The default delay is 30 seconds. This can be configured to any value from 5 to
45 seconds.

Chapter 2: Operation
14 ZP3-ECU Extinguishing Control Unit User Guide
The Hold Off Extinguishant Release button
The ECU provides a means of ensuring evacuation. There are four modes of
operation, which are selected by switch settings on switch SWT3 on the
Extinguishing Unit’s main board.
See Figure 5 below for an illustration showing the default switch settings of
SWT3 and refer to Table 1 below for a description of the switch functions.
Figure 5: SWT3 default setting
Table 1: SWT3 Switch Functions
Sw
itch Default Function
1
ON There are two extinguishant discharged report mechanisms.
When switch 1 is ON (default setting), the ECU panel senses an
exstinguishant release by way of its internal circuitry and by way of a remote
sense resistor, external monitor is connected to TB1, pins 17 and 18 on the
ECU main board.
When switch 1 is OFF, the ECU only reports an extinguishant discharge if the
external monitor resistor is short-circuited.
2
OFF When switch 2 is OFF, the ECU has a time delay before exstinguishant is
released, if triggered by way of an automatic trigger. An automatic trigger is a
trigger mapped to the configured ECU addresses. Automatic delay is set by
potentiometer RV1 on the ECU main board. The delay time factory default
setting is 30 seconds.
When switch 2 is ON there is no delay in response to an automatic trigger.
3
ON The hold off delay switch configures the operation of the button labeled
‘DEPRESS TO HOLD OFF EXTINGUISHANT RELEASE’ on the ECU front
panel.
When switch 3 is ON and switch 4 is OFF, the ECU delay time countdown is
reset each time the button is pressed. There is no limit to the amount of times
this function can be used. The hold off extinguishant release function settings
on the ECU Main Board are applicable to automatic release mode ONLY.
Note that manual release settings are set by way of links on the ECU display
board. Automatic release delay for mapped trigger is set by potentiometer
RV1 on the ECU Main Board. The factory default delay time setting for
automatic delay is 30 seconds. This switch setting is used together with switch
4 (see below). Switch 3 OR 4 must be ON (depending on the hold off release
operation required).