AQUABLEND 1500 15MM THERMOSTATIC MIXING VALVE
Contents
1. name Valve supplied by name Valve installed by name Date of installation Drawing No Certificate of Compliance Inspection No Dated Service manual on site YES NO Report received by name Position Signature Date For and on behalf of the client site manager owner 20 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve 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 amp location warm water L sec C outlet of outlet fixture Toet cal ieuilek zji i outle req outle All req fiture bath shower in use outlets ih in use outlets ih No basin or other use use 1 2 3 4 5 6 T 8 Give details of brand and model designation Commensurate with the design flow rate for the mixing valve NOTE An accurate digital type thermometer is necessary for the tem perature measurements Prescribed temperature range for warm water C to C Fail safe at both minimum and maximum design flow rates PASSED FAILED Signature of licensed plumber Licence Cert No Business name of plumbing contractor Contractor s authority No Date Free Call 1800 671 864 Visit www enware c2. to ensure that the system operating conditions fall within the recommended operating range of the AQUABLEND 1500 Thermostatic Mixing Valve as detailed on page 9 If the hot water supply temperature is greater than 900C the valve may be damaged A suitable temperature limiting valve must be fitted to the hot water supply prior to the inlet fittings if the temperature of the hot water will rise above 90 C This temperature limiting valve must be installed as per the manufacturer s instructions It is also important that both of the inlet dynamic supply pressures are 500kPa or less If either supply pressure exceeds 500kPa then a suitable pressure reducing valve must be fitted prior to the inlet control valve to reduce the pressure to an acceptable limit These pressure reducing valves must be installed as per the manufacturer s instructions In order to achieve optimum performance from the valve it is recommended that the inlet pressures are balanced to within 10 of each other The water quality conditions should be checked to ensure they do not exceed the limits as listed in AS3500 4 Section1 6 If they do exceed these limits then it will be necessary to install a water softener or water treatment device 10 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve NOTE In some installations certain types of faucet devices such as flick mixers and solenoid valves are used The water pressure may be seen t
3. warranty to become void and may incur a service charge including cost of parts where 6 Damage has been caused by accident Acts of God misuse incorrect installation of the hot water system of which the valve forms a part or attempts to disassemble the valve 7 It is found that there is nothing wrong with the valve 8 The failure of the valve is due in part or in whole to faulty manufacture installation of the hot water system of which the valve forms part 9 The valve has failed directly or indirectly as a result of excessive water pressure or temperature outside the Application Guidelines thermal input or corrosive environment 10 The valve has failed due to foreign matter either from installation or the water supply 11 The failure of the valve is due to scale formation in the waterways of the valve 12 The failure of the valve is due in part or in whole to installation not in conformance with the requirements of the Code 13 ENWARE reserves the right to change its specifications without prior notice and will not accept liability for any claim arising from such change 14 Subject to any statutory provisions to the contrary claims for damage to furniture carpets walls foundations or any other consequential loss either directly or indirectly due to leakage from the valve are also excluded from warranty cover TM Trademark of Enware Australia Pty Limited ENWARE 9 Endeavour Road Caringbah NSW 2229 All ri
4. the water supply to the valve can be isolated in the event that servicing is required Non return devices must also be fitted to both the hot and cold inlets to prevent cross connection Ensure that the test plugs in the top of the inlet fittings are tight The valve should be installed so it can be accessed easily for maintenance or servicing The valve can be installed in a wall cavity under a basin or on a wall however it is essential that the mixing valve and inlet fittings are easily accessible for servicing During installation or servicing heat must not be applied near the mixing valve or inlet fittings as this will damage the valve and inlet fitting internals Failure to comply with this requirement will damage the valve and fittings It will put the user at risk and it will void the warranty of the valve Free Call 1800 671 864 Visit www enware com au 11 Aquablend 1500 Thermostatic Mixing Valve Figure 2 1 Schematic Installation Diagram A 7 F Bee TH f E ai PRUG akizi 208g EFFET a 5 TTRI 2EB 000000 zZ z 5 f B Fa 5 g g 4 a int 2 5 z g g fa z D A amp gt ge euees 3 gt 3eh g SHE g Be G amp 5 TE FITE 00000 Commissioning Of The Valve Upon completion of the installation the valve should be tested amp commissioned as per the procedure outlined below or as specified by the local authority The entire procedure should be read through thoroughl
5. AQUABLEND 1500 15MM THERMOSTATIC MIXING VALVE For use in Australia RO m AUSTRALIA PTY LIMITED Free Call 1800 671 864 WaterMark Visit www enware com au AS 4 J Enware Australia Pty Limited Part No 18123 9 Endeavour Rd Caringbah NSW 2229 Ph 61 2 9525 9511 Fax 61 2 9525 9536 Aquablend 1500 Thermostatic Mixing Valve Contents Introduction 3 Warranty 4 Safety 6 Product Range amp Physical Description 6 Recommended pressures amp temperatures 8 Flow sizing graph 9 Installation 10 Commissioning of the valve 12 Maintenance and servicing 15 Fault finding 16 Spare parts 18 Commissioning Report 19 Enware reserves the right to change any product specification or information contained in this publication at any time and without notice Every care has been taken to ensure accuracy in the Preparation of this publication which has been issued for guidance only No liability can be accepted for any consequences which may arise as a result of its application Enware trade mark of Enware Australia Pty Limited A C N 003 988 314 Aquablend TMV s are exclusively manufactured for Enware Australia Pty Limited by Reliance Worldwide 27 28 Chapman Place Eagle Farm Qld 4009 Australia 2 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve Introduction The ENWARE AQUABLEND 1500 Thermostatic Mixing Valve is a high performance Thermostatic Mixing Valve suitable for a wide range of applicat
6. N SYMPTOM The desired Hot and cold Refit the valve with Hot mixed water supplies are fitted to Cold supplies fitted to the temperature the wrong correct connections cannot be connections Clean the valve ensuring obtained or e Valve contains that all debris is removed valve is difficult debris and components are not to set e Strainers contain damaged debris e Clean strainers ensuring debris is removed Check non return device is not jammed Clean it if necessary e Check Top Cap amp Piston O rings for damage Replace if necessary The valve will not shut down e The hot to mix temperature differential is not 10 C or greater e The piston O ring is damaged Rubber sealing seat is damaged or fouled by debris e Thermostatic element has failed e Raise hot water temperature e Replace piston O ring ATMS1215 Clean seat using mild descaling solution Replace element ATMS1206 changing over time temperatures are fluctuating e Strainers contain debris Mix e Debris is fouling e Clean the valve ensuring temperature valve that all debris is removed unstable Flow rate below and components are not 4L min damaged e Strainers are e Rectify any pressure fouled deterioration e Clean strainers Mix Inlet conditions Install suitable pressure temperature pressures or control valves to ensure inlet conditions are within those stated on page 7 Clean
7. NAMIC INLET PRESSURES Hot amp Cold Inlet Pressures Minimum 20kPa Maximum 500kPa STATIC INLET PRESSURES Hot amp Cold Inlet Pressures Maximum 1000kPa INLET PRESSURE RATIO Maximum inlet pressure ratio for stable 10 1 either operation Hot Cold or Cold Hot supply NOTE For optimum operation it is recommended that the hot amp cold water supply pressures be balanced to within 10 NOTE Notwithstanding the above compliance with AS3500 must be maintained 8 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve Flow Sizing Graph The ENWARE AQUABLEND 1500 Thermostatic Mixing Valve is suitable for many applications The Headloss Characteristic for Mixed Outlet Flowrate versus Balanced Inlet Pressure is shown below in Graph 2 1 It is important that the valve is not oversized for its intended application HEADLOSS CHARACTERISTICS OF AQUABLEND 1500 500 5 400 Pressure Loss kPa Flow L min Graph 2 1 Headloss Characteristics Note To ensure optimum performance the minimum outlet flow of the mixing valve during operation should be at least 4 litres minute It is important that the valve is sized such that the flow rates from the outlets are not less than those listed in AS3500 1 2 The pipework between the valve and the system must be sized in accordance with AS3500 1 2 Appendix B to ensure the water velocity in the
8. ater temperature has stabilised note the outlet temperature ensuring the outlet temperature has re established e Repeat the above test except this time quickly isolate the hot water supply to the valve The outlet flow should quickly slow to a trickle As a rule of thumb the trickle should typically be less than 0 4L min 500kPa down to less than 0 1L min 100kPa following the isolation Restore the hot water supply to the valve and measure and record the outlet temperature after the mixed water temperature has stabilised ensuring the outlet temperature has re established e Ensure that all details of the Commissioning Report are completed amp signed by the relevant signatories amp a copy is kept with the installer and owner of the premises e The valve is now commissioned and it can be used within the technical limits of operation 14 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve Maintenance And Servicing The ENWARE AQUABLEND 1500 Thermostatic Mixing Valve 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 ENWARE AQUABLEND 1500 should be inspected amp tested The valve should be given a light wipedown of the external surface The valve amp
9. ghts reserved 1996 Free Call 1800 671 864 Visit www enware com au 5 Aquablend 1500 Thermostatic Mixing Valve Safety The ENWARE AQUABLEND 1500 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 Note When installed the mixing valve inlet controls pipework and the surrounding area may become hot which may cause burn injuries Precautions should be taken to ensure that these surfaces cannot cause such injuries Product Range amp Physical Description The ENWARE AQUALBLEND 1500 Thermostatic Mixing Valve is available complete with inlet service fittings The inlet to the fittings is 1 2 BSP male and the outlet from the valve is 2 BSP male adapter with an optional 34 BSP male adaptor 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 Section 10 The inlet service fittings also incorporate union type fittings enabling the thermostatic mixing valve to be removed from its installation without disturbing its pipework The schematics and dimensions of the val
10. ions The valve is designed to comply with AS4032 Thermostatic Mixing Valves The mixing valve has the following features Free Call 1800 671 864 Complies with the requirements of AS4032 Thermostatic Mixing Valves Provides high stability of mixed water temperature even under changing inlet conditions Ensures rapid shut down of mixed outlet flow in the event of hot or cold water supply failure Designed for quick and simple in situ servicing Suitable for installation into AS3500 compliant systems with hot water temperature as low as 55 C Fitted with a Tamper Resistant temperature adjustment mechanism Visit www enware com au 3 Aquablend 1500 Thermostatic Mixing Valve Warranty The ENWARE AQUABLEND 1500 Thermostatic Mixing Valve is guaranteed free from manufacturing defects for a period of 24 months subject to the conditions outlined below Enware Product Warranty Subject to the warranty conditions and exclusions set out below ENWARE valves are warranted to be free from defects in material and or workmanship for a period of 24 months service life and if found by ENWARE to be so defective will be replaced as set out below If the valve is sold by a party other than ENWARE then it is sold by that seller as principal and the seller has no authority from ENWARE to give any additional warranty on behalf of ENWARE The benefits of this warranty are in addition to all other rights and remedies which the purchaser
11. may have under the Trade Practices Act Cwth or similar laws of each State and Territory in Australia Warranty Conditions 1 The valve must have been installed by a licensed plumber in accordance with the ENWARE Installation Instructions and Application Guidelines supplied with the valve and in accordance with the National Plumbing and Drainage Code AS3500 the Code current at the date of installation and all relevant statutory and local requirements in the State or Territory in which the valve is installed 2 Where the valve is installed outside the boundaries of a metropolitan area as defined by ENWARE the cost of transport insurance and travelling shall be the purchaser s responsibility Refer to the ENWARE scale of fees for replacement of valves 3 Where the valve comprises part of a hot water system installation of that system must be in accordance with its manufacturer s recommendations the Code and all relevant statutory and local State or Territory requirements 4 The valve must be returned to ENWARE with a fully amp correctly completed ENWARE Warranty Claim Form 4 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve 5 Where the valve is replaced under warranty the replacement valve carries a new warranty as detailed herein Warranty Exclusions Replacement work will be carried out as set out in the ENWARE Warranty above but the following exclusions may cause the
12. o spike outside that recommended for the valve during rapid shut off conditions with 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 During the flushing procedure care should be taken to prevent water damage occurring to the surrounding area It is required by AS3500 4 2 that Each thermostatic mixing valve shall have an isolating stop tap valve line strainer and non return valve fitted to the hot and cold water supply lines The inlet fittings supplied with each TMV will ensure this requirement is met If the ENWARE AQUABLEND 1500 Thermostatic Mixing Valve is to be installed without the supplied inlet control valves then it will be necessary to install a separate isolating valve non return valve and strainer to both inlets to the valve Strainers must be fitted to prevent any particulate contamination from entering the valve These strainers should be 60 Mesh stainless steel Isolating valves are required so that
13. om au 21 Aquablend 1500 Thermostatic Mixing Valve Enware Thermostatic Mixing Valve Servicing Report For Thermostatic Mixing Valves use a separate sheet for each valve Establishment Address Phone No Contact Date Work Order No Make amp Model of Hot Water Unit Model No Mixing Valve Make Size Valve Location Building Total No of Mixing Valve No Valves on Site Building Total No of Baths Basins Showers outlets served by this valve Other outlet details Valve installed to requirements of The drawing amp The code of The code of The local specification TMV s TMV s water supply authority YES NO YES NO YES NO YES NO If NO give details and action taken Any current complaints concerning installation or YES NO operation reported or stated in previous report If YES give details Particulars of service work carried our during this visit List of items replaced and part numbers during this visit Warm water temp at outlet C Fail Safe Test PASSED FAILED Valve considered satisfactory for further use YES NO If NO reason and action taken Date next service due 12 months maximum 22 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve It is hereby certified that all the commissioning work has been carried out by the undersigned in acc
14. ordance 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 The following information is to be provided by site manager owner Valve size and installation recommended by name Valve supplied by name Valve installed by name Date of installation Drawing No Certificate of Compliance Inspection No Dated Service manual on site YES NO Report received by name Position Signature Date For and on behalf of the client site manager owner Free Call 1800 671 864 Visit www enware com au 23 RO ZE AUSTRALIA PTY LIMITED Free Call 1800 671 864 Visit www enware com au Enware Australia Pty Limited 9 Endeavour Rd Caringbah NSW 2229 Ph 61 2 9525 9511 Fax 61 2 9525 9536
15. pipework is within the allowed limit If the valve is to be installed and operated under unequal inlet pressures the lower inlet pressure determines the outlet flow rate However for optimum performance and stability it is recommended that the valve be installed with balanced dynamic inlet pressures 10 Free Call 1800 671 864 Visit www enware com au 9 Aquablend 1500 Thermostatic Mixing Valve Installation The ENWARE AQUABLEND 1500 Thermostatic Mixing Valve should be installed using the appropriate Standard Code of Practice and legislation applicable to each state and following the details outlined in this section The ENWARE AQUABLEND 1500 must be installed by a licensed plumber or where applicable a licensed plumber who has undertaken T A F E training in Thermostatic Mixing Valves Note To effectively control microbial hazards during system design installation commissioning and maintenance the requirements outlined in AS NZS3666 and local legislation shall be adhered to Inlets and outlet connections of the valve are clearly marked The letters H and C cast into the valve body indicates the Hot and Cold Inlet respectively An arrow cast into the body of the valve identifies the valve outlet direction If the valve is not installed correctly then it will not function correctly and may put the user in danger It may also void the warranty of the valve Prior to the installation of the valve the system must be checked
16. re kPa Pressure kPa Hot Water Cold Water Temp C Temp cc Cold Water Pressure Supply vi Reducing YES NO upply via Valve Fitted Make of Model No Mixing Valve Size Valve Location Building Total No of Mixing Valves Valve ID No on Site Building Total No of Baths Basins Showers outlets served by this valve Other outlet details Valve installed to requirements of The drawing amp The valve The code of The local water specification manufacture TMV s supply authority supplier YES NO YES NO YES NO YES NO If NO give details and action taken Free Call 1800 671 864 Visit www enware com au 19 Aquablend 1500 Thermostatic Mixing Valve 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 12 months use Valve commissioned by Contractors Authority No Lic Cert No Signature Licensed Plumber Business name of Plumbing Contractor Date NOTE A duplicate copy of this report is to be retained at the site for any inspection by authorised persons The following information is to be provided by site manager owner Valve size and installation recommended by
17. store itself to original temperature setting Similarly if the hot inlet temperature dropped the element would again see blended water at a lower temperature and therefore the Element would again contract reducing the cold port piston gap and hence supply more hot water and less cold Once again the valve attempts to restore itself to its original setting This will occur for all changing conditions including changes to flow rate inlet temperatures and inlet pressures In the event of a sudden loss of the cold water supply the Piston will shut off the hot port thus stopping any flow through the valve The valve will also shut down the cold supply if there is a hot water failure Cold inte ole Figure 1 2 General Satie Arrangement Return Spring Drawing Thermostatic Element Free Call 1800 671 864 Visit www enware com au 7 Aquablend 1500 Thermostatic Mixing Valve Recommended Pressures amp Temperatures MIXED OUTLET TEMPERATURE Temperature Adjustment Range 35 48 Celsius INLET TEMPERATURES Cold Supply Minimum 5 Celsius Maximum 25 Celsius Hot Supply Minimum 55 Celsius Maximum 90 Celsius Hot to Mix Temperatures Differential for Stable Minimum 10 Celsius Operation Cold to Mix Temperatures Differential for Stable Minimum 5 Celsius Operation FLOW RATES To ensure stable outlet ste 4 litres minute ae Minimum conditions as per grpah 6 1 DY
18. strainers ensuring debris is removed 16 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve FAULT SYMPTOM CAUSE RECTIFICATION Either full hot or cold flowing e Valve is incorrectly set e Adjust mix temperature between 35 50 C as the valve outlet failure e Strainers are fouled from outlet e Hot Cold water has required fixture migrated to other e Replace faulty nonreturn inlet valves ATMS1212 e Refer also to fault sympton 1 amp 2 No flow from e Hot or cold water e Valve functioning correctly Restore inlet supplies and check mix temperature e Clean strainers too hot or cold Valve incorrectly set Inlet temperatures are not within specified limits Flow rate Valve or inlet Check valve and inlet reduced or fittings fouled by fittings for blockages fluctuating debris Ensure operating e Dynamic inlet conditions are within pressures are not specified limits and the within recommended dynamic inlet pressures limits are nominally balanced to within 10 Mixed water e Valve has been e Readjust valve to temperature tampered with required set temperature Readjust valve to required set temperature e Ensure inlet temperatures are within the specified limits as listed on page 7 overstroke Mixed water e Return spring is Install return spring temperature missing ATMS1211 doesn
19. surrounding area should be inspected for leaks or water damage and appropriate action taken if required Ensure a clean dry work area is available Firstly isolate the hot and cold supplies to the mixing valve by closing the inlet ball valves Remove the inlet fitting top cover with a suitable spanner and then remove the mesh strainer as shown in Figure 3 1 below The strainers should be cleaned with a dilute water solution of suitable descaling solvent such as CLR checked for physical damage and then thoroughly rinsed with clean water The strainers can then be re installed into the valve and the top cover replaced and tightened to a maximum torque of 15Nm into the inlet valve bodies If the valve fails to shut down or fails to maintain its set temperature then refer to the fault finding solutions outlined on page 15 The valve piston O ring and thermostatic element piston assembly must be replaced at intervals not exceeding 5 years Check that the test plugs in the top of the inlet fittings are tight and that there is no evidence of water leakage The valve must then be recommissioned as per page 11 including temperature adjustment and the shut down test Figure 3 1 Removing the Inlet Strainer Free Call 1800 671 864 Visit www enware com au 15 Aquablend 1500 Thermostatic Mixing Valve Fault Finding e Non return devices are damaged Top Cap and or Piston O rings are damaged FAULT CAUSE RECTIFICATIO
20. t change Thermostatic e Replace thermostatic when the element has failed element ATMS1206 temperature adjuster is altered Mixed water Adjuster at e Mixed water is at temperature maximum mix maximum temperature adjuster difficult temperature stop No higher mix temperature to move Valve piston into adjustment is available e Wind adjuster out until set temperature required is achieved Free Call 1800 671 864 Visit www enware com au 17 Aquablend 1500 Thermostatic Mixing Valve FAULT CAUSE RECTIFICATION SYMPTOM Hot water flows Non return valves Replace non return into the cold valves ATMS1212 water system or vice versa Valve is noisy of AS3500 1 2 Water velocity above velocity requirements Reduce water velocity Spare Parts REPLACEMENT PART PART TIME NUMBER Fitting Assembly As required ATMS4542 Inlet Fitting Service Pack As required ATMS1313 Thermostatic Element Piston 5 yearly ATMS4715 Assembly O Ring Kit 5 yearly ATMS4714 18 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve 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 No Make amp Model of Hot Water Unit Pressu
21. ture rotate the spindle anti clockwise To decrease the mixed outlet temperature rotate the spindle clockwise 3 Allow the mixed outlet temperature to stabilize for 60 seconds and once again take a temperature reading Repeat the procedure until the desired temperature has been reached 4 Push the top cover firmly on to the top of the valve until it snaps back into place 5 Check that the outlet temperature is stable over the full range of flow rates and that the flow rate is adequate for the application 6 Close the outlet 7 The mixing valve is now set and locked Free Call 1800 671 864 Visit www enware com au 13 Aquablend 1500 Thermostatic Mixing Valve Figure 2 2 Increasing and Decreasing the Mixed Water Temperature Shut Down Test e 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 The outlet flow should quickly cease flowing As a rule of thumb the flow should be less than 0 1L min following the isolation Monitor the maximum outlet flow temperature and record this on the Commissioning Report Appendix A The temperature should not exceed that allowed by the applicable standard or code of practice for each state Restore the cold water supply to the valve After the mixed w
22. ve and corresponding order code are shown below in Figure 1 1 FIGURE 1 1 Physical Size AQUABLEND 1500 AS CAST NICKEL PLATED FINISH With 1 2 Male Thread Inlet and Outlet Fittings i Dry Weight 2kg 4 ORDER CODE BJE ATM 700 6 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve Figure 1 2 shows a general arrangement drawing of the ENWARE AQUABLEND 1500 Thermostatic Mixing Valve showing the method of operation 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 At this point the mixed water contacts the thermostatic wax Element The Element will extend or contract to match the water temperature it is exposed to causing the Piston to move thereby regulating the amounts of hot and cold water entering the valve This thermostatic mechanism maintains the mixed water temperature at a constant temperature If for example the inlet hot pressure dropped the flow of hot water into the valve would be reduced and the valve would react as per the following sequence of events e Element is exposed to mixed water at a reduced temperature Thermostatic Element contracting e Piston is pushed upwards by the return spring restricting cold flow consequently opening more of hot port e Valve attempts to re
23. y prior to the commissioning of the valve A calibrated digital thermometer having rapid response time with maximum temperature hold small flat bladed screwdriver and the adjusting key supplied with the AQUABLEND 1500 will be required to check amp set the outlet mixed temperature of the valve 12 Free Call 1800 671 864 Visit www enware com au Aquablend 1500 Thermostatic Mixing Valve e Ensure all outlets that will be serviced by the valve have adequate warning signs posted to ensure that no outlet is used during commissioning e Open the cold supply line to the valve then open the hot supply line ensuring there are no leaks e Open the outlet that is serviced by the shortest length of pipe work between the mixing valve and outlet fixture e Allow the mixed outlet to flow for at least 60 seconds to allow the temperature to stabilise before taking a temperature reading at the outlet with a digital thermometer The flow rate should be at least 4L min The flow rate can be checked with the aid of a known size container and a stopwatch The temperature should be taken at the closest outlet served by the thermostatic mixing valve e If the outlet temperature requires adjustment the followings steps are required Temperature Adjustment 1 Using a small flat bladed screw driver lever the protective cover off the valve figure 2 1 2 Fit the supplied key over the adjusting spindle figure 2 2 To increase the mixed outlet tempera
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