AQUALEAK AquaGuard Dual User manual

Read these instructions carefully before using this product.
Keep these instructions in a safe place for future reference.
AquaGuard Dual
Instruction Manual

AquaGuard Dual Instruction Manual
2
Document Information
Copyright
© Aqualeak Detection Ltd. All Rights Reserved.
This document is the sole property Aqualeak Detection Ltd. and shall not be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated in any form, by any means, without prior written
permission from Aqualeak Detection Ltd.
Publication
Publisher: Aqualeak Ltd. Publication date: 19 January 2023. Version number: 1.0
All possible care has been taken in the preparation of this manual, but Aqualeak, its agents and distributors
accept no liability for any inaccuracies that may be found. This manual reflects the state of the product at
the publication date below, but further enhancements while in service may mean that the manual does not
precisely reflect your system. Aqualeak reserves the right to make changes without notice both to this manual
and the products which it describes.
Purpose
This document provides installation and operating instructions for the AquaGuard Dual Water Leak Detection
System.
Symbols and Notices Used
Important information has been highlighted throughout this document using the following symbols:
Warning
See relevant section
Take note of this information
Important Safety Information has been highlighted throughout the Safety Information section using the
following warning notices:
Death / serious injury
(irreversible)
Death / serious injury
(irreversible)
Minor injury
(reversible)
Damage to property
Immediate risk
Potential risk
Potential risk
Potential risk
Contact Details
Address
Telephone
Email
Website
Aqualeak Detection Ltd.
[phone]
[e-mail]
www.aqualeak.com
11 Forest Gate
Pewsham
Chippenham
Wiltshire, SN15 3RS
United Kingdom

AquaGuard Dual Instruction Manual
3
Contents
1Safety Information ..................................................................................................... 5
1.1 Intended Use ...................................................................................................... 5
1.2 Statutory Obligations............................................................................................. 5
1.3 Electrical Safety .................................................................................................. 5
1.4 Installation Safety ................................................................................................ 6
1.5 Post-Installation Safety .......................................................................................... 6
2Product Overview ...................................................................................................... 7
2.1 Technical Specifications ......................................................................................... 8
2.2 Input-Output Connections ....................................................................................... 9
3Installation .............................................................................................................10
3.1 Unit Installation.................................................................................................. 10
3.1.1 Mounting ....................................................................................................... 10
3.1.2 Power Connections ........................................................................................... 10
3.2 Valve/Flow Meter Assembly.................................................................................... 11
3.3 Sensors and Relays .............................................................................................. 12
3.3.1 Sensor / Relay Connections ................................................................................. 13
3.4 Ancillary Devices................................................................................................. 17
3.4.1 Signalling to an Ancillary Device ........................................................................... 17
3.4.2 230V Output to an Ancillary Device ........................................................................ 17
4Menu Settings ..........................................................................................................20
4.1 Passcode Protection ............................................................................................. 20
4.2 Contrast........................................................................................................... 20
4.3 Maximum Flow Rate ............................................................................................. 20
4.4 Maximum Time of Flow Rate................................................................................... 21
4.5 Holiday Mode Time .............................................................................................. 21
4.6 Valve Exercise Frequency ...................................................................................... 21
4.7 Sensor Sensitivity ................................................................................................ 22
4.8 Valve Type........................................................................................................ 22
4.9 K Factor ........................................................................................................... 22
4.10 Valve Voltage .................................................................................................... 23
5Operation ...............................................................................................................24
5.1 Monitor Mode..................................................................................................... 25
5.2 Fault Mode........................................................................................................ 25
5.3 Alarm Mode....................................................................................................... 26
5.4 Manual Override ................................................................................................. 26
5.4.1 Manual Open................................................................................................... 26
5.4.2 Manual Close .................................................................................................. 26
6Maintenance ...........................................................................................................27
6.1 Cleaning........................................................................................................... 27
7Troubleshooting .......................................................................................................28
8Warranty................................................................................................................29

AquaGuard Dual Instruction Manual
4
Tables
Table 1: AquaGuard Dual Technical Specifications .................................................................. 8
Table 2: AquaGuard Dual Input-Output Connections ................................................................ 9
Table 3: K Factor Values ................................................................................................ 23
Table 4: Valve Voltage Settings ........................................................................................ 23
Table 5: Home Screen Key.............................................................................................. 24
Table 6: Indicator Modes................................................................................................ 25
Table 7: AquaGuard Dual Troubleshooting ........................................................................... 28
Figures
Figure 1: AquaGuard Dual Water Leak Detection System ........................................................... 7
Figure 2: AquaGuard Dual Input-Output Connections ............................................................... 9
Figure 3: AquaGuard Dual Rear Panel Showing Electrical Power Connections .................................. 10
Figure 4:Connecting to 22mm combined valve/meter unit........................................................ 11
Figure 5: Connecting to separate valve and meter .................................................................. 12
Figure 6:AquaGuard Dual Rear Panel Showing Sensor / Relay Connections ..................................... 13
Figure 7: Sensor Cable Connection using Leader Cable (LC10C) .................................................. 13
Figure 8: Sensor Cable Connection using LC10/LCB100 and Start of Line ....................................... 14
Figure 9: Sensor Cable Connection using Single ESD Sensor Probe ............................................... 15
Figure 10: Connecting Multiple ESD Sensor Probes as a Single Zone ............................................. 16
Figure 11: Connection for Signalling to an Ancillary Device ....................................................... 17
Figure 12: Using the AquaGuard Dual to Power a 230V Ancillary Device (Alarm Relay 1: Normally Open) . 18
Figure 13: Using the AquaGuard Dual to Power a 230V Ancillary Device (Alarm Relay 1: Normally Closed) 18
Figure 14: Snubber Installation ........................................................................................ 19
Figure 15: Contrast Adjusting Screen ................................................................................. 20
Figure 16: Flow Rate Setting Screen .................................................................................. 20
Figure 17: Time Limit Setting Screen ................................................................................. 21
Figure 18: Holiday Mode Time Setting Screen ....................................................................... 21
Figure 19: Valve Exercise Frequency Setting Screen ............................................................... 21
Figure 20: Sensitivity Setting Screen ................................................................................. 22
Figure 21: Valve Type Setting Screen................................................................................. 22
Figure 22: K Factor Setting Screen .................................................................................... 22
Figure 23: Valve Voltage Setting Screen ............................................................................. 23
Figure 24: Home Screen ................................................................................................ 24
Figure 25: Front Panel of the AquaGuard Dual Water Leak Detection System.................................. 25

AquaGuard Dual Instruction Manual
5
1Safety Information
For your safety and the safety of others, please ensure that you read the Safety
Information below, before you install or operate this product.
1.1 Intended Use
Only use this product for the intended purpose described in this manual.
1.2 Statutory Obligations
✓Installation and maintenance must comply
with all relevant local laws and regulations
(‘statutory obligations’), particularly
concerning electrics, water supplies, and
building regulations.
✓Statutory obligations always override
manufacturer documentation.
✓It is the responsibility of the customer to
conduct a Health & Safety risk assessment
prior to installing and operating this
product.
This product should not be operated by
children or persons with reduced physical,
sensory or mental capabilities. Where
necessary, such Persons should be given
supervision by a qualified person
responsible for their safety.
DO NOT position the unit (including its
power cable) where it may violate Fire or
Health and Safety regulations (e.g. block
fire exits or stairwells etc.).
1.3 Electrical Safety
RISK OF 230 VOLT ELECTRIC SHOCK
RISK OF DEATH OR SERIOUS INJURY
✓ONLY qualified, competent and approved
persons (e.g. ‘electrical engineers’) may
undertake installations, repairs, or
relocations of this product.
✓The product must be earthed correctly.
✓For indoor use only.
✓Ensure that the building electrical system is
compliant with Safety Regulations.
DO NOT allow children or any other
unqualified or unapproved persons to
install, repair, clean, relocate, or
otherwise interfere or tamper with the
product.
DO NOT immerse the unit or its peripherals
in liquid.
DO NOT install outdoors, near hot works, or
where there is a danger of freezing.

AquaGuard Dual Instruction Manual
6
1.4 Installation Safety
RISK OF DAMAGE
RISK OF INJURY
✓Install the product on a hard, solid, and
level surface.
✓Follow the instructions provided in this
manual. Where necessary, refer to the
Aqualeak website (www.aqualeak.com) for
contact and support information.
✓Be aware of any existing electrical (e.g.
wiring), water (e.g. pipes), or other
installations in the vicinity (including within
or behind the surface used for mounting.
✓Where applicable, this manual should be
read in conjunction with manufacturer
documentation for any components
specified in the installation requirements of
this manual.
1.5 Post-Installation Safety
Once installed:
1. Perform a test run to ensure normal
operation.
2. Explain all safety precautions to the end
user.
3. Provide a copy of this manual to the end
user.
✓It is the responsibility of the end user to
supply this manual to any other subsequent
users.
✓All goods are sold subject to our
‘Conditions of Sale’.
✓As Aqualeak Detection Ltd. continuously
improves products, they may be modified
without notice. In such circumstances, this
manual and other relevant documentation
should be disregarded. Updated
documentation will be produced, supplied
with new product ranges and made
available on request.
SAVE THESE INSTRUCTIONS

AquaGuard Dual Instruction Manual
7
2Product Overview
Ensure you have read the Safety Information in section 1 before attempting installation or
operation of this unit.
The AquaGuard Dual Water Leak Detection
System is a standalone leak detection system
designed to be integrated into larger Building
Management Systems (BMS) and networks.
Designed for continuous operation with minimal
human intervention, the AquaGuard Dual is also
compatible with a wide variety of sensing
technologies (sold separately) to detect the
presence of water and other liquids.
The AquaGuard Dual is designed to monitor for
water leaks in residential and commercial
buildings. In addition, the AquaGuard Dual can
shut off the cold-water supply in the event of:
•A pipe burst
•A ruptured or fractured pipe
•Loss of power
•The property being unoccupied for longer than 24 hours
Configuring the AquaGuard Dual allows the unit to be tailored to intelligently respond to a wide range of
environments, situations and user requirements.
Features
Capacitive touch interface
User configurable (sensitivity adjustment,
output control, and self-maintenance
features)
Hardwired combined valve and flow meter
or separate valve and flow meter
Multiple outputs
Pattress or flush mountable; mains powered
Back-up battery module available
Audible and visual alarms
Compatible with a large number of sensor
types and ancillary devices
CE compliant
Operation
In operation, the AquaGuard Dual continuously monitors the sensing equipment connected to it for both circuit
integrity and the presence of water. If a leak or fault is detected, an audible alarm is activated, an LED
illuminated, and, if connected, the AquaGuard Dual will report its alarm status to any connected device
(BMS/SMS/beacon, valve) via its volt free contacts. Benefits of the AquaGuard Dual include:
Continuous leak and cable break monitoring
Automated water supply shut off
Minimal human intervention required
Reduced risks from flooding
Built-in fault detection
Manual override
Figure 1: AquaGuard Dual
Water Leak Detection System

AquaGuard Dual Instruction Manual
8
2.1 Technical Specifications
AquaGuard Dual
Specification
Notes
Dimensions
146 x 86 x 69 mm
Millimetres. Width x Height x Depth
Weight
300 g
Grams (0.3 Kilograms)
Supply Voltage
100-240 VAC
Volts / Alternating Current
50-60 Hertz
Output Relay Voltage
250 VAC
Output Relay Current
8 A
Amps. Maximum into resistive load
Relay Minimum Load
10 mA
Milliamps. At 5 VDC (Volts / Direct Current)
Leader Cable
Belden 9534
Belden 9534 EIA RS-232 Multicore Cable (4
Core, 24 AWG, 0.2 mm²). Variable length.
Detection Response Time
1 second
Alarm (Audible)
85 dB
Decibels. Within 0.6 m range
Alarm (Visible)
LED Indicator
Front panel
Operating Temperature (Control)
0 to +50°C
Degrees Centigrade. Ambient temperature
Operating Temperature (Valve)
0 to +60°C
Operating Humidity
10 to 95%
Relative humidity (non-condensing) at 45°C
Operating Altitude
0 to 3,000 m
Metres
Storage Temperature
-20 to +70°C
Input channels
1
Maximum Sensor Cable Length
75 m (with maximum
20 probes)
Use recommended yellow Sensor Cable
(SCY). Also requires End of Line (EOL)
terminator.
Display
3 lines x 16
characters LCD
Flow Meter Accuracy
2 to 30l/min 3%
accuracy
Flow Valve
¾” or 1” depending
on model ordered
Flow Valve Approval
WRAS
Table 1: AquaGuard Dual Technical Specifications

AquaGuard Dual Instruction Manual
9
2.2 Input-Output Connections
Figure 2: AquaGuard Dual Input-Output Connections
Item
Name
Notes
Relay Abbreviations
1
Common Alarm Relay
COM | NO | NC
COM = Common
NC = Normally Closed
NO = Normally Open
2
Battery Back-Up
Connection for optional battery backup
unit
3
Meter connections
SIG/Flow | GND | 5V
4
Latching Valve Output
Red | Black
Mains Abbreviations
5
Sensor Input
Red | Black
LS = Live Supply
LL = Live Loop
NS = Neutral Supply
NL = Neutral Loop
ES = Earth Supply
EL = Earth Loop
6
Mains Supply / Loop
7
Alarm Relay 1 & 2
NO | COM | NC | NC | COM | NO-HL
Table 2: AquaGuard Dual Input-Output Connections

AquaGuard Dual Instruction Manual
10
3Installation
Risk of electric shock and equipment damage! Ensure you have read the Safety Information in
Section 1 before attempting installation. The AquaGuard Dual can be either surface mounted with
the supplied pattress, or flush mounted (back-box not supplied).
3.1 Unit Installation
3.1.1 Mounting
Mount the unit as follows:
1. Ensure the unit has been properly removed
from its packaging.
2. Securely mount the supplied pattress box
or an appropriate flush mount alternative
in a suitable location, and make the cable
entries as required.
3. Bring the cables through the pattress box or
flush mount alternative to the unit before
starting to make final connections.
4. Securely house the unit in the pattress box
or flush mount alternative.
3.1.2 Power Connections
A competent person must power the AquaGuard Dual via an appropriate mains supply at a nominal
230V 50-60Hz, from a spur with a minimum capacity of 8 Amps. This supports switching power
to external loads through the 8 Amp Double Pole Double Throw (DPDT) relay.
Figure 3: AquaGuard Dual Rear Panel Showing Electrical Power Connections
Connect power to the AquaGuard Dual as follows:
1. Route the power cable from the
unswitched fused spur into the unit
mount, using suitable containment/cable
protection.
2. Connect the power cable (i.e. Live, Neutral
and Earth) to the unit.
220/240V AC
CONNECTION
LS|LL|NS|NL|ES|EL

AquaGuard Dual Instruction Manual
11
3.2 Valve/Flow Meter Assembly
The AquaGuard Dual can be used with separate Valve and Flow Meters or a combined Valve/Flow Meter. The
selected Valve/Flow meter assembly should be fitted into the cold-water mains supply pipe immediately after
the stop cock in a secure, indoor location. The assembly must not be located where there is a danger of
freezing. The control unit should be mounted adjacent to the valve/meter assembly but in a location where
it can be easily accessed.
The cable between the unit and the valve/meter assembly can be disconnected if the cables need to be fed
through a hole.
The valve/flow sensor comes with a ¾” BSP male thread on each end. Please note that the body of the unit is
made from fibreglass and great care should be taken not to overtighten the connectors when installing. It is
recommended that a qualified plumber be used to fit this device.
Refer to Figure 4 for the connection diagram for a 22mm combined valve/meter, and Figure 5 for connection
to separate valve and meters.
Figure 4: Connecting to 22mm combined valve/meter unit

AquaGuard Dual Instruction Manual
12
Figure 5: Connecting to separate valve and meter
3.3 Sensors and Relays
Regardless of sensor type or combinations of sensor types, there must always be an end of line
(EOL) terminating resistor at the end of the sensing circuit to allow for cable break monitoring
and alarm reference set point. The AquaGuard Dual relies upon a terminating resistor of value
47k ohms.
The AquaGuard Dual should be powered OFF when making connections. Sensors should be installed
so that they remain accessible for maintenance.
Multiple sensors and sensor types may be connected to the AquaGuard Dual. Sensor cables (SCY), for example,
monitor for water along their full length and can be run in lengths between 1 and 100 metres; Sensor probes
(ESD) monitor for water in their exact location only and can be connected in circuits of between 1 and 20
probes.

AquaGuard Dual Instruction Manual
13
3.3.1 Sensor / Relay Connections
Figure 6: AquaGuard Dual Rear Panel Showing Sensor / Relay Connections
A. Connect Sensor Cable (SCY) using LC10C and End of Line
Figure 7: Sensor Cable Connection using Leader Cable (LC10C)
Connect the Sensor Cable using LC10C and End of Line (EOL) as follows:
1. Ensure that the unit is powered OFF.
Connect the leader cable into the sensor
input terminal on the unit. Do not connect
the green or white cores (Figure 6).
2. Plug the opposite end of the leader cable
into the sensor cable (Figure 7).
3. Once all sensor cables are connected (to a
maximum total length of 100 metres), plug
the End of Line (EOL) terminator into the
end of the last run of the sensor cable.
Cable Connection
Leader Cable
Sensor Cable
EOL Terminator
SENSOR INPUT
Red Core: Left
Black Core: Right
COMMON ALAM RELAY
COM|NO|NC
ALARM RELAY 1
NC|COM|NO
METER CONNECTIONS
SIG|GND|5V
ALARM RELAY 2
NO|COM|NC

AquaGuard Dual Instruction Manual
14
B. Connect Sensor Cable (SCY) using LC10/LCB100 and Start of Line
Figure 8: Sensor Cable Connection using LC10/LCB100 and Start of Line
Connect the Sensor Cable using LC10/LCB100 and Start of Line (SOL) as follows:
1. Ensure that the unit is powered OFF.
Connect the leader cable into the sensor
input terminal on the unit. Do not connect
the green or white cores (Figure 6).
2. Cable the opposite end of the leader cable
in to the Start of Line (Figure 8).
3. Plug the sensor cable into the connection
on the SOL.
4. Once all sensor cables are connected, plug
the End of Line (EOL) terminator into the
end of the last run of the sensor cable.
LOOP TERMINAL
block not used
Green and white
cores not used
Belden 9534 Cable to
Sensor Input
Secure cable under clamp
strap
SENSE TERMINAL
Red Core: +/1
Black Core: -/2

AquaGuard Dual Instruction Manual
15
C. Connect a Single Environmental Sensing Device Sensor Probe
Figure 9: Sensor Cable Connection using Single ESD Sensor Probe
Connect a single ESD Sensor Probe as follows:
1. Ensure that the unit is powered OFF.
Connect the leader cable into the sensor
input terminal on the unit. Do not connect
the green or white cores (Figure 6).
2. Connect the opposite end of the leader
cable to the ESD probe, and ensure that the
EOL Switch is set to the ‘IN’ position
(Figure 9).
LOOP TERMINAL
block not used
Green and white
cores not used
Belden 9534
Cable to
Sensor Input
Secure cable under clamp
strap
SENSE TERMINAL
Red Core: +/1
Black Core: -/2
RED EOL SWITCH
‘IN’ position

AquaGuard Dual Instruction Manual
16
D. Connect Multiple Environmental Sensing Device Sensor Probes as a Single Zone
Figure 10:Connecting Multiple ESD Sensor Probes as a Single Zone
Connect multiple ESD sensor probes to a single zone as follows:
1. Ensure that the unit is powered OFF.
Connect the leader cable into the sensor
input terminal on the unit. Do not connect
the green or white cores (Figure 6).
2. Connect the series of ESD probes. Ensure
that all EOL switches except the last are set
to the ‘OUT’ position; the last EOL switch
should be set to the ‘IN’ position (Figure
10).
ESD #3: RED EOL SWITCH
‘IN’position
ESD #1: RED EOL SWITCH
‘OUT’ position
ESD #2: RED EOL SWITCH
‘OUT’position

AquaGuard Dual Instruction Manual
17
3.4 Ancillary Devices
3.4.1 Signalling to an Ancillary Device
The AquaGuard Dual can be connected to provide a signal to a range of ancillary devices such as a
Building Management System (BMS) or Short Message Service (SMS) alarm unit.
Figure 11: Connection for Signalling to an Ancillary Device
Connect the AquaGuard Dual to an ancillary device as follows:
1. Ensure that the unit is powered OFF. Refer
to Figure 6 to select the correct relay for
the application.
Connect the relevant relay (Figure 11); core
colours are for illustrative purposes only and
may differ during application).
3.4.2 230V Output to an Ancillary Device
The AquaGuard Dual can be used to control powered ancillary devices such as a beacon or solenoid
valve.
CABLE TO DEVICE
Red Core: COM
Black Core: NO
CABLE TO DEVICE
Red Core: COM
Black Core: NC
ALARM RELAY 1
This device requires a
‘normally open’
condition for healthy status
ALARM RELAY 2
This device requires a
‘normally closed’
condition for healthy status

AquaGuard Dual Instruction Manual
18
Figure 12:Using the AquaGuard Dual to Power a 230V Ancillary Device (Alarm Relay 1: Normally Open)
Figure 13:Using the AquaGuard Dual to Power a 230V Ancillary Device (Alarm Relay 1: Normally Closed)
Use the AquaGuard Dual to power a 230V ancillary device as follows:
1. Refer to Section 2.2 and/or 3.3.1 (Figure
4) to select the correct relay.
2. Wire the device. Wiring is dependent on the
labelling of terminals and whether the
device is normally open or normally closed
(Figure 12 and Figure 13 show wiring for
normally open and normally closed devices
connected to Alarm Relay 1).

AquaGuard Dual Instruction Manual
19
In order to limit the effect of potential electromagnetic interference on system performance
from high indicytrance components, we strongly recommend that valves, whether purchased
from Aqualeak or not, are installed with a snubber and be locally isolated. Snubbers can be
purchased seperately from Aqualeak if required.
Figure 14:Snubber Installation

AquaGuard Dual Instruction Manual
20
4Menu Settings
The three buttons on the front of the unit are used to access different menus (‘Set’) and adjust the various
settings (‘+’ and ‘-’).
In general terms, to access a menu, press ‘Set’. Once in the required menu, press + or – to adjust the value,
as required. Then press ‘Set’ again to save the value and move to the next menu.
4.1 Passcode Protection
When on the home screen (Section 5), press and hold the ‘Set’ button for four seconds. This will then
prompt you to enter the four-digit passcode supplied to Engineers by Aqualeak. Enter each digit of the
passcode by using ‘+’ and ‘-’ and press ‘Set’ to move from one digit to the next. Once all four digits are
correctly entered, press ‘Set’ and access to all menu settings is given.
4.2 Contrast
This adjusts the contrast of the display.
Figure 15:Contrast Adjusting Screen
1. Press ‘+’ and ‘-’ to adjust the display contrast to the preferred level. The contrast of the display
will automatically adjust in real time as you change the value.
2. Press ‘Set’ to save the value and move to the next menu option.
4.3 Maximum Flow Rate
This is the maximum flow rate that the unit will allow to flow through the meter at any given time. Once the
flow reaches and/or exceeds this threshold, the valve will close.
Figure 16:Flow Rate Setting Screen
1. Use ‘+’ and ‘-’ to set the flow rate to the desired limit. This is adjustable in 1 l/m increments.
2. Press ‘Set’ to save the value and move to the next menu.
The menu settings are passcode protected to ensure that only authorised people can adjust
them.