Watersavers WLDS-10 Mk3 Guide

WLDS-10 Mk3
MAJOR WATER LEAK DETECTION SYSTEM
INSTALLATION & COMMISSIONING
DESCRIPTION: An electronic control panel used in conjunction with
one pulse meter (a water meter with pulse output proportional to
flow rate) which is installed on the incoming water supply at the site
boundary or at the building intake - in accordance with BREEAM
requirements.
The control monitors the flow of water through the meter over a
preset period of time and raises an alarm in the following situation:
When a continuous flow of water passes through the Main (M1)
water meter above a preset maximum for a preset period of time.
By setting realistic flows and time periods (allowing for usual
fluctuations in consumption) any increase above these norms may
be detected and dealt with –saving water and limiting damage
caused by a major leaks.
Sales/Technical 01603 720999
Watersavers Limited
Earl Road
Rackheath Industrial Estate
Norwich Norfolk NR13 6NT
[e-mail] www.watersavers.co.uk

NOTES

TABLE OF CONTENTS
Section 1 –Introduction & important information
Section 2 –Installation instructions
Section 3 –LCD screens & navigation map
Section 4 –Main screen
Section 5 –Entering parameters & commissioning
Setting the time and date
Setting pulse meter K factor
High flow times for days of the week
Setting maximum High and Low flow rates
Number of alerts before alarm
Protection off (manual override)
External selection of HF/LF parameters
Solenoid valve setup
Section 6 –Monitoring Screens
Peak number of litres
Section 7 –WLDS-10 alarm
Excess Flow alarm
External input alarm
Alarm test
Additional relay outputs
Section 8 –Troubleshooting
Section 9 –Wiring diagram
Section 10 –Notes
Section 11 –Specification

1-INTRODUCTION & IMPORTANT INFORMATION
IMPORTANT INFORMATION!
This Water Leak Detection System will not
provide protection unless it is set up and
commissioned as detailed in section 5
For correct and effective operation the following must be completed:
a) Appoint a person responsible for:
i) Understanding how the system works, setting and monitoring the
parameters and keeping records accordingly
ii) Being aware of the implications of the alarm and the inability to
draw water should a shut off valve be fitted
b) As water consumption will be unique to each installation it is
important to establish periods of high use and low use ie when
occupied or unoccupied, day or night, week or weekend etc.
c) An initial water audit will establish the daily/weekly patterns of
water consumption. Further regular monitoring should be undertaken
to fully understand the overall usage including seasonal fluctuations,
plant watering, tank filling, vehicle cleaning etc.
d) Following electrical & mechanical installation, the following
procedures must be undertaken:
i) Set Time & Date
ii) Set K factors for pulse meter M1
iii) Set High Flow times Monday to Sunday as per the audit
iv) Run the system for 1 week –see section 4
v) Enter maximum flow parameters for both HF & LF times using the
readings from the Peak Litres screen
e) Reboot and the system is ready to run

2-INSTALLATION INSTRUCTIONS
NB: THE INSTALLATION SHOULD COMPLY WITH LOCAL AND SITE
REGULATIONS AND BE CARRIED OUT BY A QUALIFIED ELECTRICIAN.
MECHANICAL
Plumb in pulse water meter according to the manufacturer’s instructions. If required
plumb in a 24v DC solenoid shut off valve to isolate water supply in the event of an
alarm. Consider fitting a bypass so that water may be drawn in event of a power or
valve failure.
ELECTRICAL
Fix the steel enclosure in a suitable position protected from the elements as close to
the pulse meters as is practicable. A 240v 50Hz supply (5A spur) with means of
disconnecting the power will be required. The LCD display and keypad should be
easily accessible and clearance made to allow the door to open fully.
Connect single phase supply to terminals E, L & N using 0.75 or 1.0 mm² cable -
see wiring diagram - Fig 1
Connect Main (M1) pulse meter using 2 core 0.5 or 0.75mm² cable to terminals
1 & 2 –see wiring diagram - Fig 1
Note if a long cable run is required (>10m) use cable of at least 0.75mm2screened or
armoured cable with sheath earthed at panel end.
Normally Open contact is available at terminals 11 & 12 used for alarm or BMS - see
wiring diagram - Fig 2 & Fig 3
Solenoid valve a contact is available at terminals 13 & 14 for operating a solenoid
shut off valve in the event of an alarm. This may be set for a Normally Closed or a
Normally open valve in ‘SOLENOID VALVE SETUP’ - see wiring diagram - Fig 4
24v DC supply is available on terminals marked - & + which can be used in
conjunction with either contact to suit individual applications –see specifications for
ratings.
When the above steps have been completed turn on the electricity supply. After a
brief welcome screen showing ‘Watersavers WLDS-10 Mk3’ the Main screen will show
–see section 4
CHECK TIME & DATE AND SET IF NECESSARY –see section 5

3 –LCD DISPLAY & KEYPAD –QUICK GUIDE
SOME USEFUL FUNCTIONS
Alarm Test –press 2 key for 4 seconds
Manual Override –press 6 key for 4 seconds
Valve service –press 8 key for 4 seconds
Serial Number of the WLDS-20 mk3 - press 1 and INFO (i) keys together
The MAIN screen will be return after 3 seconds.
2x 16 CHARACTER
LCD DISPLAY

3-LCD SCREENS & NAVIGATION MAP
LCD DISPLAY & KEYPAD
This incorporates a 2 line 16 character LCD display with LED backlighting. The keypad
and display enable the user to enter parameters and monitor water flow.
Press the ◄key to scroll through the parameter entry screens.
Press the ►key to scroll through the time setting screens from Monday to Sunday.
Press the ▼ key to view monitor screens and solenoid valve setup.
To return to the Main screen press the ▲ key.
WLDS-10 Mk3 LCD SCREENS NAVIGATION MAP
M A I N 0 0 0 0 0 0 L\00
T U E 1 0 : 5 7 L F O K
M A X L H F H H : M M
0 0 2 0 0 0 0 : 3 0
M A X L L F H H : M M
0 0 0 2 0 0 0 : 3 0
# O F H I G H STRELA
T O A L A R M 0 1
0 0 1 0
M A I N K F A C T O R
0 L / P U L S E
M O N H F T I M E
0 8 : 0 0 T O 1 8 : 0 0
T U E H F T I M E
0 8 : 0 0 T O 1 8 : 0 0
W E D H F T I M E
0 8 : 0 0 T O 1 8 : 0 0
T H U H F T I M E
0 8 : 0 0 T O 1 8 : 0 0
F R I H F T I M E
0 8 : 0 0 T O 1 8 : 0 0
S A T H F T I M E
0 0 : 0 0 T O 0 0 : 0 0
S U N H F T I M E
0 0 : 0 0 T O 0 0 : 0 0
KP E A
KP E A
0 0 L000
0 0 0 L0 0
H F
L F
*
BACK
MAINMAIN MAIN
L E N O I D V A L V E
S E T U P
S E R V I C E T I M E
0 1 : 0 0 H O U R S
S O
L E N O I D V A L V ES O
N O R M . C L O S E D< >
V A L V E S E R V I C E
E V E R Y 1 D A SY0

4-MAIN SCREEN
This is the default screen
Example only
The top line shows TOTAL LITRES registered by the Main meter (M1) at the site
boundary or main intake (similar to a car’s milometer). The slash next to the L will
change from \ to / to indicate contact closure from the pulse meter. The bottom line
shows day of the week, time (24hr format), current High Flow (HF) or Low Flow (LF)
status and lastly OK - (flow less than preset maximum or HI - greater than preset
maximum.
Check that the MAIN display increments as water flows through the pulse meter.
NB: Larger pulse meters (1” and above) may produce 1 pulse per 10 or 100
litres and the display will correspondingly be programmed to increment by
10 or 100 litres. Enter the actual number of litres into the preset fields -
irrespective of the pulse per litres output.
PLEASE BEAR IN MIND THAT THE ACCURACY OF ANY MEASUREMENT OR
DETECTION WILL BE LIMITED TO THE K FACTOR OF THE PULSE METER USED
eg 1, 10 or 100 LITRES.
TO RESET TOTAL LITRES TO ZERO
Main: In MAIN display press and hold ‘0’ key for 4 seconds
M A I N 0 0 0 0 0 0 L\00
T U E 1 0 : 5 7 L F O K

5-ENTERING PARAMETERS & COMMISSIONING
TO ENTER OR CHANGE A PARAMETER in a particular screen press Enter. You will
then see a flashing cursor to prompt you to enter the required value using the
keypad. Press Enter again to confirm. Press Enter again and repeat to make further
changes.
For correct operation the following procedures MUST be completed:
SETTING THE TIME AND DATE
SETTING THE PULSE METER K FACTOR (LITRES PER PULSE)
SETTING HIGH FLOW (HF) TIMES FOR DAYS OF WEEK
SETTING MAXIMUM HIGH & LOW FLOW RATES (FROM PEAK
READINGS OBTAINED AFTER THE TEST WEEK)
*********************************************************
IMPORTANT
Reboot panel (turn power off / on again) after changing parameters
*********************************************************
SETTING THE TIME AND DATE
These are set before they leave the factory. If you need to change them proceed as
follows:
Press and hold the ‘INFO’ key for approximately 5 seconds. Use ►key to scroll
through INPUTS / OUTPUTS, MB/MI/SB/SI, TIMERS, SYSTEM. Press Enter key at
SYSTEM, press Enter key to select TIME & DATE, press Enter key again to select
TIME: press Enter key again to enable flashing cursor prompt, enter correct time (in
24Hr clock format) using 0 –9 keypad. When correct press to show flashing cursor
on Day. Enter correct day of the month 1-31, cursor then flashes on Month. Enter
correct month of year 1-12, cursor then flashes on Year. Enter correct year YYYY then
press INFO key 3 times to revert back to Main screen.

SETTING PULSE METER K FACTOR (LITRES PER PULSE)
Example only (default setting 10)
To reach this screen scroll through the setup screens by pressing ◄key from the MAIN
screen. The default (factory) setting for the K factor of the pulse meters is 10 litres per
pulse. To change the K factor press Enter to get the flashing cursor prompt. Enter the
new K factor of 1,5,10 or 100 litres per pulse and then press Enter again to confirm.
Press ▲key to return to MAIN screen.
SET HIGH FLOW (HF) TIMES FOR DAYS OF WEEK
Example only
To reach this screen scroll through the setup screens by pressing ►key from the
MAIN screen.
This screen and the six following screens enable a daily time period to be entered
during which high usage is anticipated. During these time periods High Flow
parameters apply. See - SETTING MAXIMUM HIGH FLOW RATE
Times outside this period are by default low usage during which time Low Flow
parameters apply. See - SETTING MAXIMUM LOW FLOW RATE
Press Enter to show the flashing cursor. Enter the time period FROM and then TO
using the numeric keys (in 24Hr format). Confirm by pressing the Enter key. Press ►
key to continue to the next day of the week or press ◄key for the previous day.
IT IS IMPORTANT THAT THE FOLLOWING IS READ AND UNDERSTOOD
Example: The default High Flow (HF) time settings are from 08:00 to 18:00 Mon to Fri with no High
Flow (HF) time period set on Sat or Sun. This would apply to a typical office installation where the
High Flow parameters would apply during the working (occupied) day and the Low Flow (LF)
parameters would apply at night and over the weekend (unoccupied).
For a restaurant or club where High Flow (HF) times span midnight eg from 8pm to 3am, simply
swap the HF & LF times and settings. Enter the times of low usage as HF during the day eg from
03:00 to 20:00 with the corresponding flow settings.
HF settings do not have to be greater than LF settings, they are just labels.
0 0 1 0
M A I N K F A C T O R
0 L / P U L S E
M O N H F T I M E
0 8 : 0 0 T O 1 8 : 0 0

SETTING MAXIMUM HIGH FLOW RATE
Example only (default setting 9999)
To reach this screen scroll through the setup screens by pressing ◄key from the MAIN
screen. This screen shows the maximum allowable number of litres that pass in a
preset time period (default 30mins) before a High Alert is registered during periods of
high flow (HF).
Press ◄key to show the above screen. Press Enter to show the flashing cursor. Enter
the maximum number of litres using the 0-9 numeric keys. Confirm by pressing Enter
key. Press Enter again to confirm the preset time period.
NB: THE PRESET TIME PERIOD CAN BE REDUCED FOR VERY
HIGH FLOW OR INCREASED FOR VERY LOW FLOW.
SETTING MAXIMUM LOW FLOW RATE
Example only (default setting 9999)
To reach this screen scroll through the setup screens by pressing ◄key from the
MAIN screen.
This screen shows the maximum allowable number of litres that pass in a preset time
period (default 30 mins) before a High Alert is registered during periods of low flow
(LF). Press ◄key to show the above screen. Press Enter to show the flashing cursor.
Enter the maximum number of litres using the 0-9 numeric keys. Confirm by pressing
Enter key. Press Enter again to confirm the preset time period.
SETTING NUMBER OF ALERTS BEFORE ALARM
Example only (default setting 1)
To reach this screen scroll through the setup screens by pressing ◄key from the
MAIN screen.
This setting is the number of consecutive times that the maximum flow rate is
exceeded before raising the alarm. The default setting is 1 which means that that the
alarm will be raised as soon as the maximum flow is exceeded. Increase this number
only if sporadic high usage is expected. Press ◄or ►keys to go to other screens or
press ▲key to return to Main screen.
M A X L H F H H : M M
0 0 2 0 0 0 0 : 3 0
M A X L L F H H : M M
0 0 0 2 0 0 0 : 3 0
# O F H I G H STRELA
T O A L A R M 0 1

PROTECTION OFF (MANUAL OVERRIDE)
Example only (default setting 1 hour)
This function is used when for example drawing off large volumes of water in order
that the alarm is not raised. To select this function press and hold the ‘6’ key (m for
manual) for 4 seconds. The above screen will show. After the Timeout period (default
1 hour) the panel will return to fully protected operation. Press Enter to change the
default period. The Timeout period may be set from 1 minute to 45 hours. To cancel
‘Protection Off’ press ▲key to return to MAIN screen.
EXTERNAL HF/LF INPUTS
Instead of using the internal time clock to set time periods of expected High Flow and
Low Flow, the WLDS-20 has inputs for connection to BMS or similar to select HF or LF
protection. These are located on the green upper (input) terminal block at the rear of
the controller.
Connect input I 5 (terminal 10) to +24v to enable external High/Low flow.
Connect input I 4 (terminal 11) to +24v to select High Flow. Low flow if open circuit.
0 1 : 0 0
P R O T E C T I O N
T I M E O U T
O F F

5 - SOLENOID VALVE SETUP
The WLDS-20 mk3 has new features that enable the installer to
select either a Normally Closed (default) or a Normally Open
solenoid shutoff valve to be used in conjunction with the panel.
Furthermore an optional regular servicing routine may be used in
order to prolong the active life of the solenoid valve and to reduce
the risk of the valve sticking open or closed due to inactivity and/or
possible calcification.
We recommend the valve is serviced at least once per week.
The 4 solenoid valve setup screens are located after the Monitoring
screens by pressing the ▼key from the MAIN screen.
SELECT NORMALLY CLOSED OR NORMALLY OPEN
The default setting is for a Normally Closed valve. Press ►key to
change to Normally Open, press ◄key to select Normally Closed.
Press ▼for the following screen:
SELECT VALVE SERVICE INTERVAL
To change the service interval press Enter key. The number of days
will flash. Enter the number of days required from 1 to 30 days.
Press Enter key to confirm.
To disable this function enter 0 days.
We recommend the valve is serviced at least once per week.
L E N O I D V A L V E
S E T U P
S O
L E N O I D V A L V ES O
N O R M . C L O S E D< >
V A L V E S E R V I C E
E V E R Y 1 D A SY0

5 - SOLENOID VALVE SETUP - CONTINUED
ENTER THE VALVE SERVICE TIME
Choose a time of the day when there will be least disruption from
the valve being opened and closed eg in the early hours of the
morning. The default time is 01:00.
The following screen will indicate the valve service in progress:
MANUAL VALVE SERVICE
To initiate a manual valve service at any time, press key 8 (V) for 4
seconds.
VALVE SERVICE FUNCTION
The valve service function consists of opening and closing the valve
for 5 fixed cycles of 2 seconds OPEN then 2 seconds CLOSED
therefore lasting a total time of 20 seconds.
S E R V I C E T I M E
0 1 : 0 0 H O U R S
V A L V E S E R V I C E
I N P R O G R E S S . .

6-MONITORING SCREENS
PEAK NUMBER OF LITRES
Example only
This screen stores the peak value measured during both High flow and Low flow time
periods. The asterisk shows the current HF/LF status.
Press ▼or ▲key to return to the Main screen.
NB THESE READINGS WILL REMAIN UNTIL RESET –SEE NOTE BELOW
NB Using your readings from the above screens add a safety margin of
10-15% for the maximum flow parameters. eg if your peak reading is
150 litres then enter 165 - 173 litres as the maximum.
RESETTING PEAK READINGS
To reset these readings press and hold the 0 key for 4 seconds while this screen is
active. This must be done following an alarm event or before a repeat test week is
carried out.
KP E A
KP E A
0 0 L06
0 0 0 L0 1
H F
L F
* 1

7-WLDS-10 ALARMS
If either preset parameters are exceeded, the NO & NC contacts will change over and
one of the following screens will be shown. If this situation occurs, reset the panel by
rebooting (turning power off then on again) and investigate as follows:
EXCESS FLOW ALARM
If this screen shows check the PEAK NUMBER OF LITRES
See Section 6 - monitoring screens.
EXTERNAL INPUT ALARM
An external alarm input is available for the connection of ancillary equipment such as
tape leak sensing to be interfaced to the WLDS-10 mk3 panel. Input I3 is located at
terminal 12 on the upper green terminal block. When this input is connected to +24v
for 1 second the above screen will show and the alarm will be raised.
ALARM/VALVE TEST
To test the operation of the alarm and/or solenoid shutoff valve if fitted, press and
hold the ‘2’ key (a for alarm). After 4 seconds the alarm contacts will changeover
for as long as the key is pressed. Release the key to cancel.
ADDITIONAL RELAY OUTPUTS
Two additional relay contact outputs are available for ancillary circuits such as
autodiallers etc. These are located on the lower green (output) terminal block at the
rear of the controller.The Normally Open contact is O2 –terminals numbered 10 & 11
The Normally Closed contact is O3 –terminals numbered 8 & 9
E X C E S S L O W !
R E B O O T T O R E S E T
F
ET R N A L LA A R M !E X
B O O T OT R E S E TR E

8-TROUBLESHOOTING
BLANK LCD SCREEN
Check power is present, check wiring, check mains fusing. Green light on PSU
indicates 24v is OK. Check DC fuse. This is located at right hand side of PSU in grey
housing. Lift grey lid at top edge to reveal fuse. Replace if necessary with spare
20x5mm 1A quick blow fuse located in upper compartment.
LITRES DISPLAY ON MAIN SCREEN NOT INCREMENTING
Check water is flowing –pulse meter will indicate water flow on the dial. To check the
pulse meter, disconnect from panel and check that its contacts open and close as
water flows through it using a multimeter set to ‘continuity’. The panel can be
checked by short circuiting terminals 1 & 2 and watching the Main screen.
The total litres display should increment by the K factor each time the terminals are
shorted.
EXCESS FLOW ALARM TRIPS WITH NO OBVIOUS LEAK
View the PEAK NUMBER OF LITRES screen (section 6) to check if the flow has
exceeded the preset maximum flow. Check time settings. Check K factor has been
entered correctly.
SERIAL NUMBER
To view the Serial Number of the panel, press keys 1 & i (info) together.
The MAIN screen will be displayed again after 3 seconds.

9-WIRING DIAGRAM

10-NOTES
Installation details
Contact name/s ………………………………………………………………………………………………………
Mobile number …………………………………………………………………………………………………………
Installation date ………………………………………… Serial number …………………………………
Main (M1) meter K factor ………………………
Alarm details ……………………………………………………………………………………………………………
Settings
High Flow (HF) max litres Time period _ _ : _ _
Low Flow (LF) max litres Time period _ _ : _ _
M1-M2 Boundary max litres Time period _ _ : _ _
# Hi Alerts to alarm …………
High Flow (HF) times - use 24hr format
Mon _ _ : _ _ to _ _ : _ _ Tue _ _ : _ _ to _ _ : _ _
Wed _ _ : _ _ to _ _ : _ _ Thu _ _ : _ _ to _ _ : _ _
Fri _ _ : _ _ to _ _ : _ _ Sat _ _ : _ _ to _ _ : _ _
Sun _ _ : _ _ to _ _ : _ _
WE RECOMMEND THE ABOVE FIGURES ARE REVIEWED EVERY 6 MONTHS

11-SPECIFICATION
Power requirements: Universal input 100-240v AC 50/60Hz, power consumption 30W
Pulse Meter input: 24v DC 5mA maximum for one reed switch type pulse meter, suitable for
1, 5, 10 or 100 litres per pulse output
Alarm output: Normally open free relay contact rated at 5A resistive load 250v AC / 30v DC
Valve output: Free relay contact rated at 5A resistive load 250v AC / 30V DC programmable as
Normally Open or Normally Closed with timed service function - see section 5
Additional outputs: two alarm contacts are available –please see section 7 WLDS-10 Alarms
24v DC PSU: 1.1A maximum available for powering alarm or valve
Parameters: Maximum Flow: Litres input range 1 –32,767, time period range 1 minute - 45
hours, number of High Alerts to alarm: 1-99.
7 day timer allows daily High Flow periods to be entered
External HF/LF input: overrides internal clock –see section 5
LCD display: 2x 16 ASCII character with LED backlight
Keypad: with tactile feedback, 0-9 numeric keys plus navigation keys for parameter setting and
monitoring
Real Time clock: displaying day and time (24Hr format) with automatic GMT/BST changeover
Battery backed (10 year life)
Connections: via DIN rail terminals maximum conductor size 4mm², cable entry via stuffing
glands in gland plate
Enclosure: Steel wall mounting overall dimensions 300 x 300 x 150mm (W x H x D) RAL7035
powder coated
Protection: to IP65 (nearest NEMA 4X) overall weight 5kg
Sales/Technical 01603 720999
Watersavers Limited
Earl Road
Rackheath Industrial Estate
Norwich Norfolk NR13 6NT
[e-mail] www.watersavers.co.uk
WLDS-10_Mk3_instructions_071218