INSTALLATION & USER GUIDE THERMOSTATIC
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 o o Oo Ooan A amp FP PR RW WHY DY 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 Mira Showers 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 an almost immediate response to ch2. 15 mm compression Outlet BSP Male to flexible hose Note This product does not allow for reversed inlets and will deliver unstable temperatures if fitted incorrectly Dimensions G42 _ 247 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 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 wa
3. Returns items can be returned within one month of date of purchase providing that they are in good condition and the packaging is unopened If you wish to return any items please notify us in writing within seven days of receipt Service Repairs Our nationwide team of Service Technicians can carry out service or repair work to your product within the guarantee period and beyond You have the assurance of a fully trained Technician genuine spare parts and a 12 month guarantee on any chargeable work done Payment should be made directly to the Service Technician who will accept most major Credit or Debit cards To Contact Us UK Telephone 0844 571 5000 E mail technical mirashowers com Fax 01242 282595 By Post Mira Customer Services Dept Cromwell Road Cheltenham Gloucestershire GL52 5EP Eire Telephone 01 459 1344 E mail sales modernplant ie Fax Dublin 01 459 2329 By Post Modern Plant Ltd Dublin Otter House Naas Road Clondalkin Dublin 22 mira FM 14648 SHOWERS Kohler Mira Limited June 2011
4. date The guarantee on any replacement parts or product ends at the original expiry date e For shower fittings or consumable items we reserve the right to supply replacement parts only The guarantee does not cover e Call out charges for non product faults such as damage or performance issues arising from incorrect installation improper use inappropriate cleaning lack of maintenance build up of limescale frost damage corrosion system debris or blocked filters or where no fault has been found with the product e Water or electrical supply waste and isolation issues Compensation for loss of use of the product or consequential loss of any kind e Damage or defects caused if the product is repaired or modified by persons not authorised by us or our appointed representative e Routine maintenance or replacement parts to comply with the requirements of the TMV 2 or TMV 3 healthcare schemes e Accidental or wilful damage e Products purchased ex showroom display What to do if something goes wrong If your product does not function correctly when you first use it contact your installer to check that it is installed and commissioned in accordance with the instructions in this manual If this does not resolve the issue contact our Customer Services Team who will offer you or your installer help and advice If you experience problems check in this manual to see if simple home maintenance is required If you require further
5. 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 Flow Control 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 fitt
6. 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 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 of 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 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 befo
7. SIONING 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 temperature 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 cy Rubber Seal A SS 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
8. ained 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 e Factory Pre set Blend Shower 43 C Optimum Thermostatic Control Range 35 C to 43 C achieved with supplies of 15 C cold 65 C hot and nominally equal pressures 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 Hot Bottom side nearest flow control 15 mm compression Cold Top side nearest temperature control
9. anges 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 Guarantee For domestic installations Mira Showers guarantee the Mira Infuse and Mira Minibelle against any defect in materials or workmanship for a period of three years from the date of purchase shower fittings for one year For terms and conditions refer to the back cover of this guide Recommended Usage Application wale with Fittings Domestic v Light Commercial x Heavy Commercial x Healthcare x Patents and Design Registration Patents GB 2 340 210 2 392 223 2 392 224 Patent Applications Euro 1 672 257 US 2006 0124758 A1 Design Registration 000793401 00012 00016 SAFETY WARNINGS 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 ca
10. assistance call our Customer Services Team Mira is a registered trade mark of Kohler Mira Limited The company reserves the right to alter product specifications without notice 1084102 W2 D B94E 1663 Extended Guarantees A selection of protection plans are available that enable you to cover repair bills for the life of your policy excludes Eire Ring 01922 471763 for more details Helpdesk Service Our Customer Services Team is comprehensively trained and can offer help and advice spare parts accessories or a service visit We will need you to have your model name or number power rating if applicable and date of purchase As part of our quality and training programme calls may be recorded or monitored Mira Showers Website www mirashowers co uk From our website you can register your guarantee download additional user guides diagnose faults purchase our full range of accessories and popular spares refer to our FAQ s and request a service visit Spares and Accessories We maintain extensive stocks of genuine spares and accessories and aim to provide support throughout the product s expected life Payment can be made by phone at time of order using most major Credit or Debit cards and we aim to despatch orders within 2 working days Items purchased from us are guaranteed for 12 months from date of purchase For safety reasons spares exposed to mains voltages should only be fitted by competent persons
11. ed 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 e the specifications for the product Renew the mixer valve assembly Check that the pressures are not in excess of 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 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 Concealing Plate EO S 1660 152 Filter Pack x2 J o 1660 158 Flow Knob Pack Infuse also includes Securing Nut 1660 153 Inlet Nuts amp Olives x2 1660 157 Flow Knob Pack Minibelle 1660 183 als
12. o includes Securing Nut Mixer Valve Assembly Infuse we 1660 184 Sp Mixer Valve Assembly Minibelle Note Knobs vary depending on model Mixer Valve Assembly also includes 1660 151 Concealing Plate 1663 265 12 L Min Flow Regulator CS SF Not illustrated D 1660 159 Screw Pack 1660 169 1660 175 Seal Pack 1660 168 Outlet Shroud and Outlet Shroud and Securing Nut Infuse Securing Nut Minibelle 11 CUSTOMER SERVICE Guarantee Your product has the benefit of our manufacturer s guarantee which starts from the date of purchase To activate this guarantee please return your completed registration card visit our website or free phone 0800 0731248 within 30 days of purchase UK only Within the guarantee period we will resolve defects in materials or workmanship free of charge by repairing or replacing parts or product as we may choose This guarantee is in addition to your statutory rights and is subject to the following conditions e The guarantee applies solely to the original installation under normal use and to the original purchaser only The product must be installed and maintained in accordance with the instructions given in this user guide Servicing must only be undertaken by us or our appointed representative Note if a service visit is required the product must be fully installed and connected to services Repair under this guarantee does not extend the original expiry
13. re 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 loosely 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 COMMIS
14. ter 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 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 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
15. utions 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 temperatures Care is required when adjusting flow or temperature make sure that the temperature has stabilised Do not remove or tighten the body grubscrews Ae i Caution Do not remove or tighten these grubscrews When this product has reached the end of its serviceable life it should be disposed of in a safe manner in accordance with current local authority recycling or waste disposal policy PACK CONTENTS SPECIFICATIONS 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 QD Qlix Concealing Plate amp L 1x M4 x 12mm Grubscrew OO TSS O 4 x Wall plugs TT RRR U 4 x Fixing Screws V U 2 x Olives U 1x2mm Hexagonal Key Documentation U 1 x Guarantee Registration Document Pressures e Max Static Pressure 10 Bar e Max Maintained Pressure 5 Bar Min Maint
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