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S&S Northern Ltd. Wallace Francis House, Barnes Wallis Way, Buckshaw Village, Lancashire, PR7 7JN T. 01257 470983 www.snsnorthern.com 

 

 

ATWM—Installation & Maintenance

 

A. 

GENERAL INFORMATION 
 
The AT-WM is a pulse water meter, leak monitoring system that has been specifically 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 flowing 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 limiting the amount of water and leak damage.  

 
INSTALLATION ITEMS (NOT SUPPLIED)  

 

Wall fasteners for surface mounting (four screws)  

 

Rubber or elastomeric washers to seal at mounting points  

 

Semi-flush recess flange (optional)  

 
TOOLS REQUIRED  

 

Drill or hole punch for electrical conduit entries  

 

Phillips (cross-head) screwdriver  

 

Small flat-head screwdriver  

 
STORAGE  
 
 

Keep the module in a dry place prior to installation to avoid possible damage to internal components.  

 
B. PRODUCT INFORMATION 
 
AT-WM— 

 

12Vdc Regulated Supply 250mA (Polarity NonSpecific) PSU supplied.  

Temperature— 

85oC Max 

Pressure— 

 

0.35—10Bar  

Flowrates—   

ATWM will detect any flow rate greater than 0.5 litres per minute 

 

Summary of Contents for ATWM

Page 1: ...ter meter If the volume of water reaches the pre set limit customer adjustable the system can isolate the mains water pipe therefore limiting the amount of water and leak damage INSTALLATION ITEMS NOT...

Page 2: ...y Ensure compound does not enter valve Avoid pipe strain by proper support and align ment Type PN16 mating flanges will be required on some models over 50mm E HELPFUL HINTS We recommend that AT WM is...

Page 3: ...The Output connections can be used to activate an external alarm auto dialler or connection to a BMS The AT WM controller monitors the water flowing ONE or TWO water meters or flow switches There are...

Page 4: ...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...

Page 5: ...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...

Page 6: ...read the AT WM installation instructions for information on installing connecting and navigating around the menu system All values used in this guide are examples only and NOT definitive settings your...

Page 7: ...s is the higher value of the two for when the building is expected to use the most water Use left and right arrows to enter higher values faster We select ed 100 Press ok to exit back to menu STEP 4 O...

Page 8: ...annel 1 and select 1 only two meters fitted select both We selected both For 99 9 of installations you have now finished setting up An overview of the system as programmed above Between 6am and 6pm ev...

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