InstallatIon & User GUIde thermostatIc mIxers mIra
Contents
1. SHOWERS MIRA INFUSE amp MIRA MINIBELLE THERMOSTATIC MIXERS INSTALLATION amp USER GUIDE These instructions must be left with the user CONTENTS INTRODUCTION Introduction Patents Safety Warnings Pack Contents Specifications Pressures Temperatures Thermostatic Shut down Connections Dimensions Installation Suitable Plumbing Systems General Flow Regulator Installing the Thermostatic Mixer Commissioning Maximum Temperature Setting Operation Temperature Control Flow Control User Maintenance Fault Diagnosis Lubricants Cleaning Spare Parts Customer Service oOo o Oo oc OonaMonan A FP PHP HR PWOWN DN Oo 10 10 10 11 Back Page If you experience any difficulty with the installation or operation of your new thermostatic mixer please refer to Fault Diagnosis before contacting Kohler Mira Ltd Our telephone and fax numbers can be found on the back cover of this guide Thank you for purchasing a quality Mira product To enjoy the full potential of your new product please take time to read this guide thoroughly having done so keep it handy for future reference The Mira Infuse and Mira Minibelle are thermostatic mixers which have separate flow and temperature controls They are supplied complete with Mira L98B Shower Fittings The thermostatic mixers incorporate a wax capsule temperature sensing unit which provides a2. C hot and nominally equal pressures 9 Recommended Hot Supply 60 C to 65 C Note The mixing valve can operate at higher temperatures for short periods without damage however this could detrimentally affect thermostatic performance For safety and performance reasons it is recommended that the maximum hot water temperature is limited to 65 C Cold Water Range up to 25 C Minimum Recommended Differential between Hot Supply and Outlet Temperature 12 C Thermostatic Shut down For safety and comfort the thermostat will shut off the mixing valve within 2 Seconds if either supply fails achieved only if the blend temperature has a minimum differential of 12 C from either supply temperature Connections The thermostatic mixer can only be installed with rear supply inlets and the supply pipework must be connected as follows 9 Hot Bottom side nearest flow control 15 mm compression Cold Top side nearest temperature control 15 mm compression 9 Outlet BSP Male to flexible hose Note This product does not allow for reversed inlets and will deliver unstable temperatures if fitted incorrectly Dimensions 42 _ 047 All dimensions in mm 174 INSTALLATION Suitable Plumbing Systems Gravity Fed The thermostatic mixer must be fed from a cold water cistern usually fitted in the
3. The chrome plated parts should be cleaned using a mild washing up detergent or soap solution rinsed and then wiped dry with a soft cloth Warning Many household cleaners contain abrasive and chemical substances and should not be used for cleaning plated or plastic fittings These finishes should be cleaned with a mild washing up detergent or soap solution and then wiped dry using a soft cloth Use your thumb or a soft cloth to wipe any limescale from the soft nozzles and the front surface of the handset spray plate Do not use descalents on this product SPARE PARTS 1660 156 Temperature Knob Pack Infuse 1660 155 Temperature Knob Pack Minibelle 1660 150 Backplate 1660 151 CD Concealing Plate CO SST 1660 152 Filter Pack x2 1660 158 Flow Knob Pack Infuse also includes Securing Nut 1660 153 Inlet Nuts amp Olives x2 1660 157 Flow Knob Pack Minibelle also includes Securing Nut 1660 154 Mixer Valve Assembly 1663 213 12 L Min Flow Regulator Not illustrated 1660 159 Screw Pack 1660 175 Seal Pack 1660 168 1660 169 Outlet Shroud and Outlet Shroud and Securing Nut Minibelle Securing Nut Infuse 11 CUSTOMER SERVICE Guarantee of Quality Mira Showers guarantee your product against any defect in materials or workmanship for the period shown in the Guarantee Registration Document included with your shower Alternatively to confir
4. manual to see whether simple home maintenance is required Please call our Customer Services Team to talk the difficulty through request a service under guarantee if applicable or take advantage of our comprehensive After Sales service As part of our quality and training programme calls may be recorded or monitored Our Customer Services Team is comprehensively trained to provide every assistance you may need help and advice spare parts or a service visit 5 013181 038330 gt 1084102 W2 A B94E 1663 Mira is a registered trade mark of Kohler Mira Limited The company reserves the right to alter product specifications without notice www mirashowers com Spare Parts We maintain an extensive stock of spares and aim to provide support throughout the product s expected life Spares can be purchased from approved stockists or merchants locations on request or direct from Customer Services Spares direct will normally be despatched within two working days Payment can be made by Visa or MasterCard at the time of ordering Should payment by cheque be preferred a pro forma invoice will be sent All spares are guaranteed for 12 months from date of purchase Spares that have been supplied directly form us can be returned within one month from date of purchase providing that they are in good order and the packaging is unopened Note Returned spares will be subject to a 15 restocking charge and authorisation must be
5. suitable position for the Mixer The position of the Mixer and the Shower Fittings must provide a minimum gap of 25 mm between the spill over level of the shower tray bath and the handset refer to illustration This is to prevent back siphonage For further information on the installation of your Shower Fittings refer to the Fittings Installation and User Guide Note Only use Shower Fittings recommended by the manufacturer or supplier O 25 mm Spill Over Level Flow Regulator Site conditions will determine the flow regulator requirements For gravity fed other low pressure systems 0 5 bar or below remove the outlet flow regulator Outlet Flow Regulator Hose Washer Installing the Thermostatic Mixer 1 The thermostatic mixer must be fitted vertically as illustrated and can only be installed with rear supply inlets The supply pipework must be connected as follows Hot to Bottom Inlet Cold to Top Inlet Bottom Outlet Important This product does not allow for reversed inlets Determine the route for the hot and cold supply pipework Outlet Loosen the 2 backplate grubscrews with the 2 mm hexagon key supplied and pull the mixer and concealing plate from the backplate Unscrew the inlet nuts from the backplate Backplate Concealing Plate Inlet Nuts 6 Using the backplate as a guide mark the positions o
6. e i e fully anticlockwise and allow the temperature to stabilise 2 Test that the temperature of the water from the shower outlet is hot enough If the temperature is too hot or too cold adjust as follows 3 Carefully remove the concealing cap using a suitable tool i e stanley knife thin blade 4 Unscrew the securing screw and remove the temperature lever bearing 5 Lift the temperature lever and move it back one serration on the temperature control gear 6 Return the lever to the maximum temperature stop and check the temperature if it is still not hot enough repeat the procedure Stanley Knife Concealing Cap Thin Blade Cc Rubber Seal Ss A YZ Lift the temperature lever a and move back one serration SN Temperature Lever Bearing Securing Screw Re engage with the control gear and return to the maximum temperature stop 7 Once the maximum temperature is satisfactory refit the temperature control bearing and fit and tighten the securing screw 8 Refit the concealing cap make sure that the rubber seal is correctly fitted Caution Care is required when adjusting flow or adjusting temperature Make sure that the temperature has stabilised The thermostatic mixers have separate control levers for temperature and flow Temperature Control Turn the temperature control lever clockwise to decrease the temperature and anticlockwise to the preset maximum temperature Off Flow Co
7. f the fixing holes and the pipe centres Note Make sure that the backplate is the correct way up refer to illustration Large boss must be fitted at the bottom LOAL 7 For solid walls drill the fixing holes for the backplate with a 6 mm drill and insert the wall plugs supplied For other types of wall structure alternative fixings may be required not supplied 8 Drill the holes for the supply pipes and fit the supply pipework Hot to Bottom Inlet Cold to Top Inlet Note The inlet pipework should extend between 12 and 18 mm from the finished wall surface Caution Make sure that the pipework is not damaged otherwise the olives will not seal 9 Fit the backplate over the inlet pipes and secure to the wall using the fixing screws supplied Note Make sure that the backplate is the correct way up refer to illustration 10 Caution It is essential at this point that the supply pipework is thoroughly flushed through before connection to the mixer Failure to do so may result in product malfunction and will not be covered under the guarantee 11 Fit the olives onto the inlet pipework and tighten the inlet nuts using a suitable spanner Caution Do not overtighten Important Make sure that the inlet filters are fitted in the inlet nuts as illustrated Fixing Screws Large boss must be fitted at the bottom 12 Make sure that the concealing plate with the hole at the bottom is lo
8. loft space and a hot water cylinder usually fitted in the airing cupboard providing nominally equal pressures Mains Pressurised Instantaneous Hot Water System Combination Boiler The thermostatic mixer can be installed with systems of this type with balanced pressures Recommended Minimum Maintained Pressure 1 0 Bar Unvented Mains Pressure System The thermostatic mixer can be installed with an unvented stored hot water system Pumped System The thermostatic mixer can be installed with an inlet pump twin impeller The pump must be installed in a suitable location and in accordance with its instructions General Installation must be carried out in accordance with these instructions and must be conducted by designated qualified and competent personnel The installation must comply with the Water Supply Regulations 1999 Water Fittings or any particular regulations and practices specified by the local water company or water undertakers Note Make sure that all site requirements correspond to the information given in section Specifications 1 The Mixer must not be installed in an area where it may freeze 2 For stud partitions alternative fixings may be required 3 Isolating valves must be installed close to the Mixer for ease of maintenance 4 Pipework must be rigidly supported and avoid any strain on the connections 5 Pipework dead legs should be kept to a minimum 6 Decide on a
9. m the applicable guarantee period please contact Customer Services To validate the guarantee please return your completed registration card Within the guarantee period we will resolve defects free of charge by repairing or replacing parts or modules as we may choose To be free of charge service work must only be undertaken by Mira Showers or our approved agents Service under this guarantee does not affect the expiry date The guarantee on any exchanged parts or product ends when the normal product guarantee period expires Not covered by this guarantee Damage or defects arising from incorrect installation improper use or lack of maintenance including build up of limescale Damage or defects if the productis taken apart repaired or modified by any persons not authorised by Mira Showers or our approved agents This guarantee is in addition to your statutory and other legal rights What to do if something goes wrong If when you first use your shower it doesn t function correctly first contact your installer to check that installation and commissioning are satisfactory and in accordance with the instructions in this manual We are on hand to offer you or your installer any advice you may need Should this not resolve the difficulty simply contact our Customer Services Team who will give every assistance and if necessary arrange for our service engineer to visit If the performance of your shower declines consult this
10. n almost immediate response to changes in pressures or temperature of the incoming water supplies to maintain the selected temperature An adjustable maximum temperature stop is provided which limits the temperature to a safe level Inlet filters are fitted to protect the thermostatic cartridge Patents Patents GB 2 340 210 2 392 223 2 392 224 Patent Applications Euro 1 672 257 US 2006 0124758 A1 SAFETY WARNINGS PACK CONTENTS Mira thermostatic mixers are precision engineered and should give continued safe and controlled performance provided 1 They are installed commissioned operated and maintained in accordance with manufacturers recommendations Periodic attention is given when necessary to maintain the product in good functional order Caution 1 2 3 Read all of these instructions Retain this guide for later use Pass on this guide in the event of change of ownership of the installation site Follow all warnings cautions and instructions contained in this guide Anyone who may have difficulty understanding or operating the controls of any shower should be attended whilst showering Particular consideration should be given to the young the elderly the infirm or anyone inexperienced in the correct operation of the controls Rapid Excessive movement of the flow and or temperature control levers may result in momentary unstable blend temperature
11. ntrol Turn the flow lever clockwise to the maximum flow USER MAINTENANCE If you require a Mira trained service engineer or agent refer to section Customer Services Fault Diagnosis Symptom Only hot or cold water from the mixer outlet Outlet temperature too hot too cold Cause Rectification Inlets reversed hot supply to cold supply Rework inlet pipework No hot water reaching mixer Check the filters for any blockage Installation conditions outside operating parameters refer to sections Specifications and Commissioning Symptom Fluctuating or reduced flow rate Cause Rectification Check the shower handset hose and filters for any blockage Make sure that the maintained inlet pressures are nominally balanced and sufficient refer to section Specifications Make sure that the inlet temperature differentials are sufficient refer to section Specifications Flow regulator fitted incorrectly Air lock or partial blockage in the pipework Symptom Water leaking from shower handset Cause Rectification Normal for a short period after shut off Check that the pressures are not in excess of the specifications for the product Renew the mixer valve assembly 10 Lubricants Silicone based lubricants must only be used on the rubber seals Caution Oil based or other lubricant types may cause rapid deterioration of seals Cleaning
12. obtained before return Please contact our Customer Services Team Note In the interests of safety spares requiring exposure to mains voltages can only be sent to competent persons Service Our Service Force is available to provide a quality service ata reasonable cost You will have the assurance of a Mira trained engineer agent genuine Mira spare parts and a 12 month guarantee on the repair Payment should be made directly to the engineer agent using Visa MasterCard or a cheque supported by a banker s card To Contact Us England Scotland Wales and Northern Ireland Mira Showers Customer Services Telephone 0870 241 0888 Mon to Fri 8 00 am 5 30 pm Sat 8 30 am 3 30 pm E mail technical mirashowers com Fax 01242 282595 By Post Cromwell Road Cheltenham Gloucestershire GL52 5EP Eire Modern Plant Ltd Dublin Telephone 01 459 1344 Mon to Fri 9 00 am 5 00 pm E mail sales modernplant ie Fax Dublin 01 459 2329 Post Otter House Naas Road Clondalkin Dublin 22 Modern Plant Cork Telephone 021 496 8755 Mon to Fri 9 00 am 5 00 pm E mail cork modemplant ie Fax 021 496 8607 Post Tramore Road Cork mira AS SHOWERS FM 14648 Kohler Mira Limited October 2007 plumbworld Big brands small prices Pdf Supplied By http www plumbworld co uk
13. osely fitted over the mixing valve inlets and align the mixer with the inlet nuts Push on fully and tighten the grubscrews to secure the mixer to the backplate Make sure that the grubscrews are engaged fully in the valve body grooves Inlet Filters Concealing Plate 13 Push the concealing plate onto the backplate secure with the M4 x 12 mm grubscrew Single grubscrew secures the top inlet to the backplate Two grubscrews securing both the bottom inlet and the concealing plate to the backplate 14 Fit the shower fittings refer to your shower fittings installation and user guide for instructions Important A 12 litre minute flow regulator is fitted inside the outlet nipple This can be removed for gravity fed other low pressure systems 0 5 bar or below 12 L Min Flow Regulator Hose Washer 15 Turn on the hot and cold water supplies and check for leaks 16 Before using the shower refer to section Commissioning COMMISSIONING OPERATION Maximum Temperature Setting Before using the shower the maximum temperature must be checked to make sure that it is at a safe level It has been preset to approximately 43 C at the factory but due to variations in site conditions the maximum temperature may need adjustment Note Make sure that the hot water temperature is at least 55 C and that there is sufficient supply 1 Turn on the mixer to the maximum temperatur
14. s Care is required when adjusting flow or temperature make sure that the temperature has stabilised Do not remove or tighten the body grubscrews Caution Do not remove or tighten these grubscrews ae When this product has reached the end of its serviceable life it should be disposed of ina safe manner in accordance with current local authority recycling or waste disposal policy Tick the appropriate boxes to familiarise yourself with the part names and to confirm that all of the parts are included U 1 x Thermostatic Mixer supplied fitted to the backplate g 0 1 x Concealing Plate QQ L 1 x M4x 12 mm Grubscrew OO U 2x Olives Tess T 4 x Wall plugs RPP CO 4 x Fixing Screws VA L 1 x 2 mm Hexagonal Key Documentation U 1 x Guarantee Registration Document SPECIFICATIONS Pressures Max Static Pressure 10 Bar Max Maintained Pressure 5 Bar Min Maintained Pressure Gravity System 0 1 Bar 0 1 bar 1 Metre head from cold tank base to shower handset outlet Note For gravity fed other low pressure systems 0 5 bar or below remove the outlet flow regulator Refer to section Installation Flow Regulator For optimum performance supplies should be nominally equal Temperatures 9 Factory Pre set Blend Shower 43 C 9 Optimum Thermostatic Control Range 35 C to 43 C achieved with supplies of 15 C cold 65
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