S&S Northern ATWM Maintenance and service guide

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
ATWM—Installaon & Maintenance
A. GENERAL INFORMATION
The AT-WM is a pulse water meter, leak monitoring system that has been specically designed to help achieve the
requirements of BREEAM 2011 (BRE Environmental Assessment Method).The AT-WM system will allow designers,
M&E contractors and developers to achieve the “Credit” available to reduce the impact of water leaks that may
otherwise go undetected. The system is designed to monitor water owing through a pulse water meter. If the
volume of water reaches the pre-set limit (customer adjustable) the system can isolate the mains water pipe,
therefore liming the amount of water and leak damage.
INSTALLATION ITEMS (NOT SUPPLIED)
 Wall fasteners for surface mounng (four screws)
 Rubber or elastomeric washers to seal at mounng points
 Semi-ush recess ange (oponal)
TOOLS REQUIRED
 Drill or hole punch for electrical conduit entries
 Phillips (cross-head) screwdriver
 Small at-head screwdriver
STORAGE
Keep the module in a dry place prior to installaon to avoid possible damage to internal components.
B. PRODUCT INFORMATION
AT-WM—12Vdc Regulated Supply 250mA (Polarity NonSpecic) PSU supplied.
Temperature— 85oC Max
Pressure— 0.35—10Bar
Flowrates— ATWM will detect any ow rate greater than 0.5 litres per minute

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
C. WIRING & PULLING
Current IEE Regulaons: AT-WM should be installed by a competent installer, in accordance with the recommendaons
laid down by the HVCA and sound engineering pracce.
D. PLUMBING INSTALLATION
The diagrams will serve as a visual aid, but it is recommended that a competent plumber carries out the assembly and
installaon. Connect the pipe to the water meter / valve according to markings on the valve body. Apply pipe compound
sparingly to male threads only. Ensure compound does not enter valve. Avoid pipe strain by proper support and align-
ment. Type PN16 mang anges will be required on some models over 50mm.
E. HELPFUL HINTS
We recommend that AT-WM is installed with a maintenance by-pass. The water meter can be ed vercally or horizon-
tally. Note the direcon of the ow arrows marked on the water meter and valve to ensure they are ed correctly.
F. MAINTENANCE
Clean periodically depending on condions. Keep the medium owing through the water meter / valve as free from dirt
as possible. While in service, the Solenoid Valve should be operated at least once a month to ensure proper cleaning and
closing. We strongly recommend a strainer is ed prior to any meters or valves to prevent debris fouling the mecha-
nism.
G. WIRING INSTRUCTIONS

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
Plumb in the Water Meter and Solenoid Valve (if applicable) in line with the manufacturer’s instrucons. Using wiring
instrucons above, connect each Meter and Valve assembly to the controller using a shielded 2 core 1.00mm2 copper
cable. For longer runs, use a larger core size.
Power the controller using the supplied transformer and open/close the valves to check they operate correctly. Run
some water and check meter reading on Modes page has increased.The Input connecon can be made to an intruder
alarm for automac guard level switching when alarm is acvated. The Output connecons can be used to acvate an
external alarm, auto dialler or connecon to a BMS.
The AT-WM controller monitors the water owing ONE or TWO water meters or ow switches. There are two guard lev-
els, Low Guard for when the property is occupied and High Guard for unoccupied. If the maximum allowable volume of
water, or ow me is exceeded the solenoid valve can be set to automacally shut o the water supply. The controller
will emit an audible and visual alarm.
H. WATER METER & CONTROL UNIT (NO SOLENOID VALVE)
IMPORTANT NOTE: The Pulse sensor which is pre-ed to the top of the water meter is pre wired with a 1.5m cable. This
can be extended using a screened 2 core cable using 1.0mm2 up to 100m and 1.5mm2 up to 150m. The screen is im-
portant to eliminate any interference and should be connected to the “Alarm In –“
I. WATER METER & CONTROL UNIT (WITH SOLENOID VALVE UP TO 50MM)

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
J. WIRING FOR AT-RU1 RELAY UNIT DIN RAIL MOUNTABLE
AT-RU1 CONNECTIONS
Power Connecons to Relay (Mains), 230Vac supply L = Live, N = Neutral, E = Earth
Power Connecons to Relay (Relay Valve), 230Vac supply L1= Live Close, L2= Live Open, N = Neutral, E = Earth
Control Connecons from AT-WM Controller 1= V (Valve) 2=C (Common)
NOTE: Wiring should only be done by a qualied electrician
NOTE: These diagrams are shown for one water meter and one solenoid valve. If two are required, the second set should
be wired to the “Valve 2” terminals.
Diagrams shown are for one water meter/solenoid valve. When two are required, use Valve 2 terminals for the second
set.
K. OPERATING THE AT-WM FOR DAY TO DAY USE.
Push any key to wake the display which will show the Home Page, see below. The home page shows the me, date, the
level of guard and the state of the valves.
Use the keys (Up, Down, Le & Right) to navigate. Use OK buon to switch between High & Low Guard Levels. Use OK to
open and close valves. To return to Home, press (Le) at any me.
To change a numerical value press OK to select the line; (Up, Down) to change the value and OK to conrm changes. Use
the (Up, Down, Le & Right) to navigate the menu.

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
Page le and right to access other operang pages
Override will show either Start Manual Override or Cancel Manual Override.
Home This is the default screen, this screen displays date, me and system status.
Modes Use OK to switch between Normal 2 guard and single Permanent High Mode. Also displays power source and me-
ter readings.
Audit The audit page records the maximum and minimum litres of water used in a period. The period can be half hour,
one hour, guard period or 24 hours depending on system sengs.
Data will display the history of Minimum and Maximum Litres used in any 60 seconds.
Events Log displays a record of events with mes and dates.
TO TEMPORARILY OVERRIDE THE GUARD LIMITS –
From Home go le to Override. Press OK to Start Manual Override Countdown. To Cancel Override, go le again from
Home page and press OK.
The default override me is 30 minutes. This can be changed between 10 and 45 minutes. The override allows unlimited
water to ow during this period.
THE GUARD MENU
To access the guard menu push both the Up and Down keys together for 2 seconds.
HI GUARD VAL: Push OK to change and conrm the maximum value in litres/hour (default: 2)
LO GUARD VAL: As above, but for when the property is occupied (default: 50)
OVERRIDE TIME: Push OK to increase from 10 minutes to 45 minutes maximum (default: 30)
METER READINGS: Push OK, navigate to match the actual water meter reading.
DATE: Push OK to select and conrm the date. Use the Up and Down keys to adjust the date.
TIME: Push OK to select and conrm the me. Use the Up and Down keys to adjust the me.
MODE: Select mode: • DAILY - every day is the same • SEVEN DAY - day by day • WEEKEND/WEEKDAY - two sengs for
the whole week • ALARM – Automac (for systems connected to an intruder alarm)
SET HI/LO Times: Push OK to access the 7 day mer. To set the LOW GUARD start to nish periods use the navigaon
keys. If only one period is required set both 1 and 2 the same
To Excit Guard Menu, push (le) at any me
THE ENGINEERING MENU
To access the engineering menu push the le, right and down keys together for 3 seconds.
FLOW PER: Push OK to select between hourly , half hourly, guard and day metering (default: hour)
PULSE: Push OK to select between one pulse per 1 litre, or one pulse per 10 Litres and one pulse per 100 Litres (default: 1
litre)
VALVES: Push OK to select valves, None; Both; Valve 1 only; or Valve 2 only (default: Both)
METERS: Push OK to select meters, None; Both; Meter 1 only; or Meter 2 only (default: Both)
LEAK: Push OK to select
LEAK Sengs. Close all; Close Single.
CLOSE VALVE: Push OK to close the valve when a High Guard period is selected (default: No)

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
ALARM IN: Push OK to select between O, Normally open and closed. When selected this will switch between guard lev-
els In line with the intruder alarm (default: Norm Open)
ALARM OUT: On/O For connecon to BMS or other alarm (default: OFF)
RESET DEFAULTS: Push OK to reset factory default sengs.
To EXIT Engineering Menu, push (le) at any me.
SETTING THE HIGH AND LOW GUARD VALUES USING THE AUDIT PAGE
The Data page stores the Maximum value recorded in the High & Low Guard periods.
START AUTO AUDIT: (If factory set) will disable the Guard funcon, WARNING your property is not protected at all during
AUTO AUDIT.
USE DATA: At any me you can select USE DATA to transfer the Auto Audit maximum values plus 10% into the High and
Low Guard Values in the Guard Menu.
To EXIT the menu, push at any me. one low period per day with period 1 start & nish mes the same. To EXIT Guard
Menu, push (le) at any me.
L. AT-WM-C – SETTINGS GUIDE
This document should be used as an addional guide to how to set up your AquiTron ATWM Major leak detecon con-
troller. Please fully read the AT-WM installaon instrucons for informaon on installing, connecng, and navigang
around the menu system.
All values used in this guide are examples only and NOT denive sengs, your values will be dierent as required by the
property the unit is located within.
When seng up this controller please consider the protecon required. This system is primarily designed to comply with
the criteria set out in BREEAM WAT 03 to detect MAJOR LEAKS in commercial buildings.
[Any text below in brackets and italics may not strictly be necessary but are hints and/or methods used to ensure pro-
gramming is progressing correctly]
TOOLS REQUIRED
 AT-WM-C
 Fingers
 Sengs relevant to the applicaon
There are two hidden menus used to program the unit:
Guard menu – accessed by pressing and holding for 5 seconds the up and down arrows together.
Engineering menu – accessed by pressing and holding for 5 seconds the le, right and down arrows together.
Navigate through menus – use up and down arrows to move the cursor (ashing on le hand side of the screen) through
the opons available. Once the cursor is at the opon required press OK to enter that opon. Pressing OK will either cycle
through the available opons or allow you to use the arrows to enter the seng required and press ok to go back to
menu. Pressing the L/H arrow will exit the menu back to the home screen.

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
 Any seng not menoned in this guide is generally not required to setup the system and should be le as default.
 Allow 30-45 minutes to program and check each unit.
 If no buon is pressed the system will me out and you will have to re-enter the menu. •
 If the unit has been previously setup or ‘ddled with’ we would advise starng with a factory reset. This can be
found at the boom of the engineering menu
The rst 7 steps are all to be found in the Guard menu and are mostly in logical order as you go down through the menu.
STEP 1 Set me and date – Locate and set the unit to the correct me and date. [exit menu to home screen by pressing
R/H arrow, check me and date is displaying correctly. It is important to do this rst as it aects further sengs opons]
STEP 2 HI GRD LTR – Press ok and set hi grd value. Min is 1ltr, Max is 2000ltr. This is the lower value of the two for when
the building is not expected to use as much water . [Use le and right arrows to enter higher values faster. We selected
50] Press ok to exit back to menu. [if you skipped step 1 and the building is in use, expect the unit to go into alarm now].
STEP 3 LO GRD LTR – Press ok and set lo grd value. Min is 1ltr, Max 5000000ltr. This is the higher value of the two for
when the building is expected to use the most water. [Use le and right arrows to enter higher values faster. We select-
ed 100] Press ok to exit back to menu.
STEP 4 Override me – press ok to cycle to 45. The override funcon allows you to use unlimited water for the period
entered without the unit going into alarm. Once started a countdown will begin once the period ends the system will
automacally revert to its normal sengs.
STEP 5 Meter 1 (2) –- Press ok and set to match the reading from the top of water meter 1. [Use le and right arrows to
enter higher values faster.] Press ok to exit back to menu and repeat for meter 2 if two meters are ed.
Skip me and date as we have already done these.
STEP 6 Mode – Press ok to cycle through opons available [the dierent modes are described on page 6 of this manual.
For this example we will assume daily has been selected]
STEP 7 Set HI/LO Times – Press ok to enter the set Low Guard me period screen. This is the me the building is occu-
pied. Set lines 1 and 2 the same [if you do not the system will go into alarm]. All mes out of this period are high guard.
[A value MUST be entered in this screen. If you require a value higher than 2000ltr per half hour, in eect a permanent
low guard, then we would advise seng this low period to 1 minute at midnight ie. 00.01 – 00.00. For our example we
have entered 06.00 – 18.00]. Press ok and le arrow once to exit to menu.
This is the end of the guard menu the next steps are in the engineering menu, again in order.

S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com
STEP 8 Flow Per – Press ok to cycle through the opons. This is the seng the controller uses to measure the values en-
tered in steps 2 and 3. [We generally use hour or half hour as these are the most granular seng and give the most pro-
tecon. We have used half hour in this example] E.g. if you entered 100ltr the system will allow 100ltr per half hour to
pass through before going into alarm. [This is NOT at set intervals that start on the hour or half hour (12.00, 12.30, 13.00,
13.30 etc). It uses a clever algorithm to constantly monitor volume used in any period of 30 minutes].
STEP 9 Pulse – Press ok to cycle through the opons. This must match the pulse output from the connected meter(S).
[Generally smaller meters will be 1ltr per pulse and larger anged meters 10 ltrs per pulse. This informaon is normally
found on the water meter. You cannot use meters that do not have a volt free pulse of 1, 10 or 100 ltrs on this controller.
We have selected 1]
STEP 10 Valves – Press ok to cycle through opons. If a valve is ed to the system select the channel you have connect-
ed the valve to [ignore this seng if no valve ed. We selected none].
STEP 11 Meters – Press ok to cycle through opons. Select dependent on whether you have one or two meters connect-
ed. [1 meter ed use channel 1 and select 1 only, two meters ed select both. We selected both].
For 99.9% of installaons you have now nished seng up.
An overview of the system as programmed above:
 Between 6am and 6pm every day up to 100ltr per half hour can be used unl an alarm
 From 6pm through to 6am the next day 50ltr per half hour can be used before an alarm.
Home screen:
 Are the date and me correct? [if not, your me periods will be out. Please be aware this unit does not self-adjust
between GMT and BST]
 Guard: Low [assuming you are in the low guard me period, if not unit will display ‘Timer high’. It is possible to put
the unit into manual high guard by pressing ok. Press ok again to go back to programmed sengs]
 Channel 1: OK [if display is ‘closed’ select channel using down buon and press ok, should display ‘changing’ then
display ‘ok’]
 Channel 2: OK [as channel 1. If you selected 1 meter in step 11, no channel 2 will be displayed]
Modes Screen: Press R/H arrow once to enter
 Mode: Normal [It is possible to select ‘Permanent High’ by pressing ok (this will change the guard display on the
home screen to ‘Permanent High’). If selected the unit will stay in hi guard unl reversed]
 Power: should say mains [unless you are running on baery back up, in which case it will say baery]
 Meter 1: Will display the amount you entered in step 5 (unless water has been used). [An easy way to check you
have the correct pulse seng is to run o some water in the building and check this reading connues to match
the reading on the top of the water meter].
 Meter 2: As meter 1 above [If you selected 1 meter in step 11 no meter 2 will be displayed]