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Summary of Contents for Watts ENWARE Aquablend ATM725L
- Page 1 Enware Aquablend 2500 Megamix ® Thermostatic Mixing Valve with Thermal Flush Lift Lever Installation Instructions For use in Australia ATM725L 20mm Inlet with 20/25mm Outlet I00620_03 Mar 2025 1300 369 273 | info@enware.com.au enware.com.au...
- Page 2 Aquablend 2500 Megamix Thermostatic Mixing Valve The Enware Aquablend 2500 PRODUCT FEATURES Megamix Thermostatic Mixing • Complies with the Valve is a high performance requirements of AS4032 - Thermostatic Mixing Valves Thermostatic Mixing Valve • Provides high stability of suitable for a wide range of mixed water temperature applications.
- Page 3 Aquablend 2500 Megamix Thermostatic Mixing Valve CONTENTS Safety page 4 Product Description page 5 Recommended Pressures page 7 and Temperatures Flow Sizing Graph page 8 Installation page 9 Commissioning of the Valve page 11 Maintenance & Servicing page 14 Thermal Flush page 16 Troubleshooting page 18...
- Page 4 SAFETY The Enware Aquablend 2500 Megamix Thermostatic Mixing Valve is a high performance valve designed to give stable and dependable operation, provided it is installed, commissioned, operated and maintained as per the recommendations outlined in this manual. It should be noted however that this valve should not be considered as an alternative to adequate supervision and duty of care during its use and operation.
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Page 5: Product Description
PRODUCT DESCRIPTION The Aquablend 2500 Megamix TMV is available complete with inlet service fittings. The service fittings consist of isolating ball valves, strainers, pressure test points and non-return valves. The strainers can be serviced and cleaned without disturbing the installation (refer to Maintenance and Servicing section). The inlet service fittings also incorporate union type fittings enabling the thermostatic mixing valve to be removed from its installation without disturbing its pipework. - Page 6 PRODUCT DESCRIPTION Method of operation is illustrated in IMAGE 2 below: Hot and cold water is supplied to each side of the valve respectively. The hot water enters through a port below the Piston, the cold water enters above the Piston. Upon entry the water begins to blend and enters the Mixing Tube.
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Page 7: Recommended Pressures & Temperatures
RECOMMENDED PRESSURES & TEMPERATURES MIXED OUTLET TEMPERATURE Temperature Adjustment Range 35 - 50°C Set during installation/commissioning | Factory set at 42°C (+/- 2 ˚C) INLET TEMPERATURES Cold Supply Minimum 5°C Maximum 30°C^ Hot Supply Minimum 55°C Maximum 90°C Hot to Mix Temperature Differential for Minimum 10°C Stable Operation... -
Page 8: Flow Sizing Graph
FLOW SIZING GRAPH The Aquablend 2500 Megamix TMV is suitable for many applications. The Headloss Characteristic for Mixed Outlet Flow Rate versus Balanced Inlet Pressure is shown below in IMAGE 3. It is important that the valve is not oversized for its intended application. Head Loss Characteristics of Aquablend 2500 Megamix TMV (mix temperature at 42°C at Valve Outlet) Flow Rate (L/min) -
Page 9: Installation
INSTALLATION The Aquablend 2500 TMV should be installed using the appropriate Standard, Code and legislation applicable to each state and following the details outlined in this section. The Aquablend 2500 TMV must be installed by a licensed plumber, or where applicable, a licensed plumber who has undertaken TAFE training in Thermostatic Mixing Valves. - Page 10 INSTALLATION NOTE: In some installations where certain types of faucet devices such as flick mixers and solenoid valves are used, the water pressure may be seen to spike outside that recommended for the valve during rapid shut off conditions created by these types of devices. Even if the spike only lasts a split second it is still considered to be outside the operating conditions, and may cause the valve to operate incorrectly. In the event that this does occur, measures must be taken to control the spike, such as an inline pressure reducing valves directly before the valve inlets. To ensure that the mixing valve operates correctly it is necessary that the pipework is thoroughly flushed with clean water before the valve is installed. This will remove any physical contaminants from the pipework, ensuring trouble-free operation.
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Page 11: Commissioning Of The Valve
COMMISSIONING OF THE VALVE Upon completion of the installation, the valve should be tested and commissioned as per the procedure outlined below or as specified by the local authority. The entire procedure should be read through thoroughly prior to the commissioning of the valve. A calibrated digital thermometer having rapid response time with maximum temperature hold, a small flat bladed screwdriver, 3mm Allen key and the adjusting key (supplied with the Aquablend 2500 TMV ) will be required to check... - Page 12 COMMISSIONING OF THE VALVE 3. Fit supplied key over the adjusting spindle. SEE IMAGE 7 • To increase the mixed outlet temperature, rotate the spindle anti-clockwise. • To decrease the mixed outlet temperature, rotate the spindle clockwise 4. Allow the mixed outlet temperature to stabilize for 60 seconds and once again take a temperature reading.
- Page 13 COMMISSIONING OF THE VALVE SHUT DOWN TEST Now that the mixing valve has been set and locked it is necessary to perform a shut down check. Allow the mixed water temperature to stabilise and note the outlet temperature. While holding a digital thermometer in the outlet flow, quickly isolate the cold water supply to the valve.
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Page 14: Maintenance And Servicing
MAINTENANCE AND SERVICING The Aquablend 2500 TMV will only require minimal preventative maintenance work to ensure it operates at its optimum level of performance. The valve should be commissioned and serviced annually, unless the installed conditions dictate more frequent servicing is necessary. ANNUAL MAINTENANCE PROCEDURE Every 12 months, the Aquablend 2500 TMV should be inspected and tested. -
Page 15: Year Service
Non-Return Valve Operation To check Non-Return Valve on the HOT inlet side, carry out the following steps: 1. Turn OFF the isolation tap on the HOT inlet only (COLD inlet must be open) 2. Open Test Port Cap on the HOT inlet side 3. - Page 16 THERMAL FLUSH OPTION The Aquablend 2500 TMV includes a built-in Thermal Flush feature allowing the facilities maintenance team or licensed service contactors to perform a controlled thermal flush to the TMV and warm water plumbing system. NOTE: The thermal flush procedure is optional and does not form part of commissioning and service requirements set out in AS4032.3 Before commencing the thermal flush, a site-specific procedure must be implemented to control the risk of scalding.
- Page 17 THERMAL FLUSH OPTION 3. Check that the temperature adjustment locking grub screw is tight. (Grub screw is located on the hex of the top cap - see IMAGE 6) 4. Hook the Lift Lever Key onto the thermal flush activation point located in the centre of the temperature adjustment screw on the valve’s top cap.
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Page 18: Troubleshooting
TROUBLESHOOTING FAULT/ CAUSE RECTIFICATION SYMPTOM 1. The • Hot and cold supplies • Refit the valve with Hot/ desired are fitted to the wrong Cold supplies fitted to the mixed water connections correct connections temperature • Valve contains debris • Clean the valve ensuring cannot be •... - Page 19 TROUBLESHOOTING FAULT/ CAUSE RECTIFICATION SYMPTOM 5. Either full • Valve is incorrectly set. • Adjust mix temperature hot or cold • Hot/Cold water has between 35 - 50°C as flowing from migrated to other inlet. required. outlet fixture • Refer also to fault/symptom •...
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Page 20: Spare Parts
SPARE PARTS PART REPLACEMENT TIME PART NUMBER 5 Year Service Kit (includes O-rings, thermostatic element, top 5 years ATMS4001 cap, red lock shield) ATMS4003 O-Ring Kit when required Red Lock Shield 5 Year Service Kit ATMS4008 ATMS4001 Top Cap Assembly O-Ring Kit ATMS4003 Thermostatic Element... -
Page 21: Commissioning Report
COMMISSIONING REPORT Enware Thermostatic Mixing Valve Commissioning Report For Thermostatic Mixing Valves use a separate sheet for each valve Establishment Address Phone No Contact Work Order Date Make & Model of Hot Water Unit Pressure Pressure Hot Water Cold Water ˚C ˚C Temp... - Page 22 COMMISSIONING REPORT Test results (complete table on following page) Valve considered satisfactory for use YES/NO If NO, state reason and action taken It is hereby certified that all the commissioning work has been carried out by the undersigned in accordance with local plumbing requirements for Thermostatic Mixing Valves Date initial service due: (Maximum...
- Page 23 COMMISSIONING REPORT Test results Valve location/building Room or area designation Work Order No Warm Name/type/ Flow rate of design Temp of warm water water size & location warm water (L/sec) °C outlet of outlet fixture 1 outlet ** All req. 1 outlet ** All req.
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Page 24: Servicing Report
SERVICING REPORT Enware Thermostatic Mixing Valve Servicing Report use a separate sheet for each valve Establishment Address Phone No Contact Date Work Order No. Make & Model of Hot Water Unit Model No: Mixing Valve Make: Size Valve Location / Building Total No. - Page 25 SERVICING REPORT It is hereby certified that all the commissioning work has been carried out by the undersigned in accordance with local plumbing requirements for Thermostatic Mixing Valves Lic/Cert No Signature Licensed Plumber Business name of Plumbing Contractor Date Contractors Authority No NOTE: A duplicate copy of this report is to be retained at the site for any inspection by authorised persons.
- Page 26 Product Warranty Statement - WATTS AUSTRALIA EFFECTIVE FROM 20 November 2023 This Warranty Statement applies to products supplied by Australian Valve Group Pty Ltd (ACN 068 227 270) (AVG) or Enware Pty Ltd (ACN 662 302 767) (Enware) (each of AVG and Enware, a Supplier) and installed within Australia.
- Page 27 3. Our responsibilities (a) In the event that the Supplier is reasonably satisfied that there is a defect in the relevant Product within the applicable Warranty Period, the Supplier will, at its option, replace the Product, supply an equivalent product or repair the Product, free of charge. Your costs in making a warranty claim under this Warranty Statement, including any costs in relation to freight, collection, delivery and installation, are to be borne and paid by you.
- Page 28 1300 369 273 info@enware.com.au enware.com.au...
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