INSTALLATION AND OPERATING INSTRUCTIONS FOR
Contents
1. 41 C for showers 41 C for washbasins 38 C for bidets The mixed water temperatures must never exceed 46 C The maximum mixed water temperature can be 2 C above the recommended maximum set outlet temperatures 46 C is the maximum mixed water temperature from the bath tap The maximum temperature takes account of the allowable temperature tolerances inherent in thermostatic mixing valves and temperature losses in metal baths It is not a safe bathing temperature for adults or children The British Burns Association recommends 37 to 37 5 C as a comfortable bathing temperature for children In premises covered by the Care Standards Act 2000 the maximum mixed water outlet temperature is 43 C The fitting of isolation valves is required as close as is practicable to the water supply inlets of the thermostatic mixing valve The fitting of strainers is recommended as close as is practicable to the water supply inlets of the thermostatic mixing valve Commissioning notes for Thermostatic Mixing Valves The first step in commissioning a thermostatic mixing valve is to check the following The designation of the thermostatic mixing valve matches the application The supply pressures are within the valves operating range The supply temperatures are within the valves operating range Isolating valves and strainers are provided If all these conditions are met proceed to set the valve outlet temperature as stipulated in the ma2. 10 bar Gas Water Heater 6 Litre 4 Litre Electric Water Heater 6 Litre 4 Litre 50 kPa Lime Green Unvented Mains 6 Litre 2 75 Litre Gas Water Heater 6 Litre 2 75 Litre Pink 4 litre limiter may not be necessary on some gas heaters IMPORTANT It is a requirement of Instantaneous Electric Water Heaters that a stable flow of water passes through a heater Failure to regulate outgoing water from the heater may result in fluctuating temperature at the tap For example a pressures of incoming supplier i e 0 1 hot side and 1 Obar cold side would give a 10 1 ratio This flow limiter is for High pressure installations when reduced flow economy rates are needed in compliance with BREEAM Regulations 6 Dimensions He er Pr T D 45 NS i fl S 45 SF1053CP SF1054CP Ad 7 130 155 Line Drawings All dimensions in mm Installation Installation must be carried out in accordance with the instructions supplied and be installed by a qualified and competent person Installations must comply with all Local and National Water Authority Regulations and Building Plumbing Regulations Care must be taken during install
3. The installation of thermostatic mixing valves must comply with the requirements of the Water Supply Water Fittings Regulations 1999 FLOW RATES The flow rates L min for the tap with and without flow limiters are quoted in the table below Pressure Drop Bar 0 2 0 4 0 8 1 0 1 5 2 0 3 0 4 0 5 0 Low Pressure Not recommended use flow Flow Rate without Limiters la ial iti oc regulators as below High Pressure Use Low Pressure 721 81 9 4 10 2 Flow Rate with limiters Pink 4I Hot side amp Setup Grey 6l cold Side High Pressure that conforms to BREEAM flow rate for Basin Mixers lt 6 0I min at 3 0 Bar Flow Rate with limiters Lime Green 2 751 Hot side amp Grey 6l cold Side Supplied Factory Fitted Use of flow limiters Use Low Pressure 45 5 5 5 5 Setup This product will be factory fitted with a lime green 2 75 litre amp grey 6 litre flow limiters and also supplied with a standard Pink 4 litre flow limiter for low high pressure installations The 2 75 flow limiter is fitted to comply with BREEAM flow rates for a basin mixer of no less than 6l min at 3 0 bar The lime green 2 751 flow limiter is positioned in the hot side and the Grey 6l flow limiter positioned in the cold side this is required when a high pressure system is used Recommended Recommended Minimum Dynamic Supply Pressure 0 2 Bar NOTE For Dynamic supply pressures below 0 5 bar we recommend removal of the flow regulators to
4. 2 Mixed Water Temperature Application Abbreviated Designation Mixed water temperature C HP B BE LP B BE 38 max HP W WE LP W WE f4 Bath 44 C fill _ HP T44 LP T44 Bath 46 C fill _ HP T46 LP T46 Note 1 For washbasins washing under running water is assumed Shower HP S SE LP S SE 4 Note 2 Bath fill temperatures of more than 44 C should only be available when the bather is always under the supervision of a competent person e g nurse or care assistant Note 3 A thermostatic mixing valve having multiple designations i e it is capable of satisfying the requirements of this specification for more than one application should be re set on site to suit the designation required 2 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk Urls The following set of tests should be carried out a record the temperature of the hot and cold water supplies b record the temperature of the mixed water at the largest draw off flow rate c record the temperature of the mixed water at a smaller draw off flow rate which shall be measured d isolate the cold water supply to the mixing valve and monitor the mixed water temperature e record the maximum temperature achieved as a result of d and the final temperature f record the equipment thermometer etc used for the measurements IN SERVICE TESTING The purpose of in service testing is to regularly monitor the ther
5. AFTER CARE Your fitting has a high quality finish and should be treated with extra care to prevent the visible surfaces All surfaces will wear if not cleaned correctly Use a soft damp cloth with clean soapy water to clean the surfaces Stains can be removed with using washing up liquid Do not use any other cleaning solution or abrasive cloths or wire cleaners as this may damage the surface of the tap If the cloth used to clean the tap has previously been used with a cleaner that contains bleach take special care to thoroughly rinse the cloth with clean water before use Twyford bathrooms INSTALLATION AND OPERATING INSTRUCTIONS FOR THERMOSTATIC BASIN MIXERS COMPLYING WITH N H S ESTATES MODEL ENGINEERING SPECIFICATION D08 THE VALVE COVERED IN THIS BOOKLET HAS BEEN TESTED AND APPROVED TO N H S ESTATES MODEL ENGINEERING SPECIFICATION D08 SF1053CP Sola Thermostatic Mono Tap TMV3 with copper pipes SF1054CP Sola Thermostatic Mono Tap TMV3 with flexi hoses LP WE LOW PRESSURE WASH BASIN HP WE HIGH PRESSURE WASH BASIN Note These basin mixers are factory fitted with a lime green 2 75l flow limiter hot side and grey 6l flow limiter cold side to comply with BREEAM regulations flow rates less than 6 0l min at 3 0 bar Please refer to page 6 in these instructions prior to installation and for the removal of flow limiters for use in Low Pressure installations and changing the Hot side flow limiter used in High Pressure i
6. allow increased flow Minimum cold water supply temperature 5 C Maximum cold water supply temperature 20 C Maximum hot water supply temperature 80 C 5 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk Maintenance amp Removal of Flow Limiters If the mixer tap has operated correctly for a time but no longer performs acceptably it may require servicing cleaning The check valves flow limiters and filters are all located in the base unit of the tap Removal as follows 1 Isolated the hot amp cold supply via the isolation units on the inlet tails Run the tap to ensure no water is left in the supply pipes 2 Unscrew the grub screws located at the back of the tap near the base Use the 2 5mm allen key provided 3 The tap can now be lifted off the base unit 4 Pull out the brass containment units and push the check valves flow limiters and filters out 5 Wash in clean running water and reassemble in reverse order Mesh filter Ty Containment unit A Flow limiter Check valve Location of grubscrews 10 VUR Temperature Setting The tap will have been factory setup to deliver a maximum temperature of 41 C The site conditions and end users preferences will require the maximum temperature to be reset This can be achieved by the following steps 1 Turn the tap to the full open position 2 Remove the targa button using a smal
7. ation to prevent any risk of injury or damage The hole in the basin must consist of a diameter of 30mm to 36mm The tap needs to be positioned to allow access to the grub screw on the back of the tap To eliminate pipe debris entering the valve it is essential that supply pipes are flushed thoroughly before connecting to the inlet tails FINAL INSTALLATION 1 Ensure the inlets tails are fully tightened into the base unit 2 Secure the clamping studs into the base unit of the tap M6 threads 3 Place the O seal over the inlet tails and into the groove located onto the bottom of the tap 4 Place the base unit seal over the inlet tails and secure on to the bottom of the base unit 5 Place the flexible hoses copper pipes through the sink hole and clamp the tap to the sink connect up to the 15mm inlet pipes 15mm compression fixing 6 Secure the tap in place with the rest of the clamping kit as per diagram O ring groove Tap body Base unit Flexible Hoses or M6 Clamping stud Copper Tubes 2 off Clamping ring Base unit seal a SS NOTE This seal sits Clamping stud nut M6 on underside of basin Pa off 7 16 across flats hexagon 8 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk Eb
8. en the next in service test should be carried out 18 to 21 weeks after commissioning These results can then be used to set a service interval which tests have shown can be used with no more than a small change in mixed water temperature This method of determining service intervals is used to take into account various in service conditions l e water condition that the valve may experience NOTE Valves operating outside these conditions cannot be guaranteed by the Scheme to operate as Type 3 valves 3 Maintenance If there is damage to the cartridge this will require dismantling and relevant parts replacing to dismantle follow these steps Remove the cartridge as per previous stage 1 Unscrew the half cartridge by placing a thin blade through the slots in the side if possible hold the head work assembly in a vice or work mate Standard right hand thread z Circlip Head om PTFE Washer 2 Remove the circlip from the flow head and push the flow head assembly through the head O ring Flow Head Shut Off Head GZ 3 Remove the PTFE washer from the flow head You are now able to GZ unscrew the flow head from the Z shut off head left hand thread Remove o ring from shut off head N O ring O ring ae Adjusting Screw 5 Check all O rings to ensure they are not damaged Clean all brass parts in mild soap solution such as washing up liquid Rinse with clean water 4 Unscrew the ad
9. justing screw from the shut off head Half Cartridge and remove o ring 2 The o ring located in the bottom of the shut off head is peened D and can not be removed O ring 6 Reassemble in reverse order 12 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk Urls Maintenance Continued Maintenance may be required on the internal working parts of your thermostatic mixer tap Spare parts are available from the manufacturer see front cover for address 1 Isolate the supplies via the isolation valves on the end of the inlet tails 2 Run the tap to remove any excess water from the thermostatic mixer tap 3 Remove the grub screw from the back of the lever use the 2mm Allen key provided 4 Unscrew the cartridge using a 32mm spanner Standard right hand thread 5 Once the cartridge has been remove from the thermostatic mixer tap pull out the thermostat and piston assembly IMPORTANT Do not damage any faces of the piston this will result in failure of the thermostatic mixer tap 6 Remove all O rings from the tap body and replace if damaged Cartridge assembly 11 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk Urls Recommended outlet temperatures The BuildCert TMV scheme recommends the following set maximum mixed water outlet temperatures for use in all premises 44 C for bath fill but see notes below
10. l flat bladed screw driver thus revealing the grub screw 3 Now using the 2mm Allen key provided unscrew the grubscrew 4 The lever can be removed 5 When looking down onto the top of the cartridge you will be able to see the adjusting screw with a hexagon centre Turning this with the 2 5mm allen key provided will increase or decrease the Temperature Turn the adjusting screw clockwise for cooler temperature Turn the adjusting screw anti clockwise for warmer temperature 9 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk b Maximum dynamic pressure 5 0 bar amp Maximum static pressure 10 0 bar NOTE A suitable hot water temperature control device should be installed to reduce temperatures exceeding the above maximum hot water supply temperature Minimum temperature differential between hot supply and outlet temperature 10 C eg Outlet temperature 41 C minimum hot supply 51 C Factory preset temperature 41 C amp Thermostatic control range 38 45 C Supply System Flow Limiter Cold Supply Hot Supply 0 1 to 5 0 bar 0 1 to 5 0 bar No No Maxium Pressure 10 to 50 kPa 0 to 50 kPa loss ratio 10 1 0 5 to 5 bar 0 5 to 5 0 bar Grey Pink 6 Litre 4 Litre 50 to 500 kPa 50 to 500 kPa Grey or Pumped or Pumped 0 2 to 5 0 bar 6 Litre 20 to 50 kPa Gravity above 0 5 bar 50 kPa Grey Pink Gravity 6 Litre 4 Litre Pressurised 1 5 to
11. lation instructions and method of temperature adjustment see General Assembly and Servicing Guide INSTALLATION RECOMMENDATIONS The following general recommendations should be observed 1 The thermostatic mixing valve should be installed in such a position that maintenance and the commissioning and testing of the TMV can be undertaken 2 Always flush both supply pipes fully before connecting mixing valve to ensure no pipe debris enters the inlets Always fit filters provided 3 All installations must comply with current local Water Company Regulations CONDITIONS FOR NORMAL USE In order to give compliance with N H S specification DO8 scheme The tables below list the conditions for normal use the valves may perform adequately outside these parameters but the TMV3 scheme approval does not apply If they are required to work with other supply conditions an engineer must carry out a risk assessment and satisfy themselves that the units are still suitable for use 1 14 For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk Gel Faultfinder Fault Cause Repair No or reduced flow and or fluctuating temperature One or both isolating valves not fully open Flow limiters incorrectly fitted Inlet pressures below specified values Supply pipes blocked Waterways in tap blocked Supply pressures unequal Open both valves fully Check information and refit correctl
12. mal performance of the thermostatic mixing valve Deterioration in performance can indicate the need for service work to be carried out on the system If the authority concerned does not have a planned test and maintenance schedule then the suggestions below should form the basis of a new system At intervals of 6 8 weeks and 12 15 weeks after commissioning 1 Check supply parameters are still within the expected values if not check system for faults 2 Carry out commissioning procedures a to c using the same test equipment if the mixed water temperature has changed a significant amount by more than 1K check to ensure in line filters are clean that the check valves are working and all isolating valves are fully open If no fault can be found check and record the mixed water temperatures and re adjust mixed water temperature to the values in table 2 Complete the commissioning procedure a to f if the mixed water temperature exceeds the values of the maximum recorded temperature by more than 2K the need for service work is indicated see relevant instruction leaflet Depending on the results of these two tests the following should be adopted a If asmall change e g 1K to 2K occurs in one of these tests or there is no significant change e g 1K maximum then the next in service test should be 24 to 28 weeks after commissioning b If small changes occur in both test or a larger change occurs in one test exceeding 2K th
13. nstallations when BREEAM flow rates are not required TMV3 approval information available on request WRAS approval information available on request Twyford Bathrooms Lawton Road Alsager Stoke on Trent ST7 2DF UK UK Technical Helpline Telephone 0844 412 5951 Fax 0844 412 5922 Email twyford technical twyfordbathrooms com For latest prices and delivery to your door visit MyTub Ltd www mytub co uk info mytub co uk 800442A rl INTRODUCTION It has been recognised that users of hot water in care establishments are at risk from scalding This risk has been reduced by the use of thermostatic mixing valves In order to assure the performance of thermostatic mixing valves N H S Estates Model Engineering Specification DO8 was written The valves listed in the following pages have been tested and approved to this standard by a third party as part of the BUILDCERT scheme for use within their designated applications The following abbreviated designation codes are used throughout this booklet Detailed descriptions are given below HP High pressure LP Low pressure S Shower B Bidet W Washbasin T44 Bath with fill temperature of 44 C max T46 Bath with fill temperature of 46 C max THE SF1053CP amp SF1054CP BASIN MIXERS HAVE BEEN APPROVED FOR USE IN THE FOLLOWING TMV3 DESIGNATIONS CODE OPERATING PRESSURE APPLICATION LP WE_ LOW PRESSURE BASIN MIXER HP WE___ HIGH PRESSURE BASIN MIXER For full instal
14. nufacturer installation instructions The mixed water temperature at the terminal fitting must never exceed 46 C It is a requirement that all TMV3 approved valves shall be verified against the original set temperature results once a year When commissioning testing is due the following performance checks shall be carried out Measure the mixed water temperature at the outlet Carry out the cold water supply isolation test by isolating the cold water supply to the TMV wait for five seconds if water is still flowing check that the temperature is below 46 C If there is no significant change to the set outlet temperature 2 C or less change from the original settings and the fail safe shut off is functioning then the valve is working correctly and no further service work is required 4 Notes If there is a residual flow during the commissioning or the annual verification cold water supply isolation test then this is acceptable providing the temperature of the water seeping from the valve is no more than 2 C above the designated maximum mixed water outlet temperature setting of the valve Temperature readings should be taken at the normal flow rate after allowing for the system to stabilise The sensing part of the thermometer probe must be fully submerged in the water that is to be tested Any TMV that has been adjusted or serviced must be re commissioned and re tested in accordance with the manufacturers instructions
15. plies 13 Table 1 Conditions for normal use Operating Pressure Range High Pressure Maximim Static Pressure Flow Pressure Hot amp Cold bar 0 2 to 1 1 0 to 5 0 Hot Supply Temperature C 52 to 65 52 to 65 Cold Supply Temperature C Di Since the installed supply conditions may differ from those used in testing and setting the valves during final inspection and a valve may have several designations it is necessary to reset the mix temperature The following procedure should be used after ensuring Minimum temperature differential between mixed temperature and either supply COMMISSIONING a The designation of the thermostatic mixing valve matches the intended application i e if a shower is to be supplied at 2 bar then the valve must have a HP S designation b The supply pressures match those for which the valve has been approved see table1 and valve details c The supply temperatures are such that they are within the permitted range see table1 and comply with guidance information on the prevention of legionnella Note If the supply conditions are not within the parameters for normal use the valve may still be suitable but individual engineers must carry out their own risk assessment and satisfy themselves that the units are still suitable for use Adjust the mixed water temperature in accordance with table 2 the method of adjustment is covered in the section Temperature Setting See page 9 Table
16. y Alter system to increase supply pressures Rectify system fault Clear debris or call service department Check maximum pressure differential and check if flow limiters correctly fitted Maximum outlet temperature too hot Maximum mixed water temperature incorrectly set Reset temperature see calibration section Maximum outlet temperature too cold or runs cold after a short time Maximum mixed water temperature incorrectly set Hot water temperature too low Reset temperature see calibration section Increase water temperature by adjusting storage temperature or power input to the system Mixed water flow too high Flow limiters incorrectly fitted See section on flow limiters Only hot or cold water at outlet Maximum mixed water temperature incorrectly set Inlet supplies reversed Reset temperature see calibration section Re pipe supplies Tap will not shut off or dripping Seal damaged or worn Scale build up in body Inlet pressure above maximum static pressure rating Renew seals from spare parts kit Service and descale fitting Reduce pressure possibly by fitting reducing valve No thermostatic fail safe Inlet temperatures outside specification Debris trapped in mechanism or mechanism jammed Inlet supplies reversed Reset boiler or recirculation temperatures Strip and clean unit or call the service dept Re pipe sup
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