Installation and User Guide ThermosTaTIc mIxer mIra DIscovery
Contents
1. 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 2 Periodic attention is given when necessary to maintain the product in good functional order Caution 1 Read all of these instructions 2 Retain this guide for later use 3 Pass on this guide in the event of change of ownership of the installation site 4 Follow all warnings cautions and instructions contained in this guide 5 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 6 Rapid Excessive movement of the flow and or temperature control levers may result in momentary changes in blend temperature 7 Care is required when adjusting flow or temperature make sure that the temperature has stabilised 8 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 Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included Exposed Discovery Thermostatic Mixer L 1 x Mira Dis2. a Normal for a short period after shut off the Showerhead b Check that the pressures are not in excess of the specifications for product c Cartridge Inlet Seals damaged renew d Renew the Thermostatic Cartridge Flow rate too low a low Insufficient supply pressures or too high b high Supply pressure too high Install Flow Reg c Refer to symptom 2 above 31 MAINTENANCE General The Mira Discovery Shower Control is designed to be maintenance free as such there are no serviceable parts in the cartridge However regular cleaning will keep the shower in pristine condition refer to section Maintenance Cleaning Filters are fitted to the inlets of the mixer to protect the cartridge and will give many years of trouble free showering Filters should be checked at yearly intervals and cleaned or replaced to maintain optimum shower performance Refer to the section Maintenance Filters If you require a Mira trained engineer or agent refer to the section Customer Service Lubricants Silicone only based lubricants can be used to assist in refitting Caution Oil based or other lubricant types may cause rapid deterioration of seals Cleaning 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 using a mild washing up detergent or soap solution rinsed and then wiped dry
3. 3 6 Drill the two 5 mm holes for the fixing positions countersink the holes at the front 3 7 Secure the Shower Control with the M5 x 40 screws as shown Filter Plugs M5 x 40 mm Fixing Screw 23 3 8 3 9 Fit the hot and cold supply pipes and tighten the compression nuts Falling Supplies For falling supplies loosen the grubscrew on each Elbow using the 2 5 mm Hexagon Key supplied Remove the Elbows and install on opposite sides Secure the Elbows with the Grubscrews Caution Do not overtighten Note Make sure that the Filter Plugs are positioned to the front i e Hexagonal Key facing forward Caution Make sure that the olives are fitted and all pipework is flushed through before connecting to the Shower Control Fit the outlet pipework leaving enough pipe through the wall to temporarily cap off 3 10 Turn on the water supplies and check for leaks 3 11 Fit the Shower Fittings refer to your Fittings Installation and User Guide for instructions 3 12 Fit the Concealing Plate and Control Assembly refer to section Control Assembly 24 Hot Supply Outlet Pipe to Fittings Co Control Assembly Important The Yellow Lugs on the Flow Control must be in the fully clockwise off position in order to
4. Note If the knob does not come off rotate it fully anticlockwise pull on the Temperature Knob while slowly rotating it clockwise until it disengages Turn the Green Temperature Hub fully anticlockwise full hot position Note Operate the Shower Control until the hot and cold water temperatures have stabilised Insert the 2 5 mm Hexagon Key into the centre of the Green Temperature Hub Turn the 2 5 mm Hexagon Key anticlockwise to increase the temperature or clockwise to decrease temperature Rotate the Green Temperature Hub fully clockwise refer to the following illustration Position the Temperature Control Knob refer to the following illustration over the Green Temperature Hub and gently push it on Note Make sure the Temperature Control Knob moves freely to full hot and to full cold Green Temperature Hub 2 5mm Hexagon Key Rotate the Green Temperature Hub fully clockwise to this position The Temperature Control Knob must be in this position the full cold position over the Green Temperature Hub OPERATION Shower Control Exposed and Built in Controls Note The shower performance may be effected if other water appliances are operated whilst the shower is in use Turn the Flow Lever Anticlockwise to the Preset Maximum Flow ZAOFF Turn the Temperature Control Knob Clockwise to decrease the Temperature or Anticlockwise to the ON Preset Maximum Temperature Caution Do not f
5. can be installed using Rear Fixing Points on the Body or by using the Securing Brackets supplied on the Front Face ofa Solid Wall or Stud Partition or on the Rear Face of a Laminated Panel For installation into a Solid Wall or Stud Partition using the Securing Brackets go to section Built in Shower Control 1 Solid Wall or Stud Partition Using Securing Brackets Mounting off Front Face For installation into a Solid Wall or Stud Partition using the Rear Fixing Points go to section Built in Shower Control 2 Solid Wall or Stud Partition Using Rear Fixing Points on Shower Control For installation behind a Laminated Panel using the Securing Brackets go to section Built in Shower Control 3 Laminated Panel Using Securing Brackets Mounting off Rear Face 13 Securing Brackets Front Face Rear Fixing Points Securing Brackets Rear Face Exposed Shower Control 1 Rear Supplies 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 Use the Installation Template to mark the positions of the holes for the Backplate and the pipe centres Note Allow a minimum of 150 mm either side of the Shower Control to allow the hot and cold inlet Compression Nuts to be tightened with the Spanner supplied For solid walls drill the Backplate holes with a 6 mm drill and fit the Wall Plugs supplied For other types of wall structure alternative fixings not supplied may be re
6. 1 Metre head from cold tank base to shower handset outlet Note For gravity fed other low pressure systems 0 5 bar or below do not fit the flow regulator For optimum performance supplies should be nominally equal Temperatures 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 Inlets 15 mm Compression Outlet 72 BSP Flat Face 15 mm Compression Standard connections are hot left cold right outlet bottom EV models top BIV models Flow Rates Typical Flow Rates on Low Pressure Systems Mira Discovery with Adjustable Fittings or Rigid Head 20 Flow Rate litres min S 0 0 2 0
7. 4 0 6 0 8 1 1 2 1 4 1 6 Supply Pressure Bar Typical Flow Rates on High Pressure Systems with 12 Litres Min Flow Regulator fitted in shower control outlet Mira Discovery with Adjustable Fittings or Rigid Head Flow Rate litres min Supply Pressure Bar 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 water company or water undertakers Note Make sure that all site requirements
8. correspond to the information given in the section Specifications For Type 2 valves see also supply conditions in section Type 2 Valves 1 The Mixer must not be installed in an area where it may freeze 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 11 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 12 Hose Retaining Ring 25 mm Minimum F Spill over Level Installation Methods Exposed Discovery Shower Control The Exposed Discovery Shower Control can be installed with Rear Rising or Falling Supply Inlets For Rear Entry Supplies go to section Exposed Shower Control 1 Rear Supplies For Rising or Falling Supplies go to section Exposed Shower Control 2 Rising or Falling Supplies Built in Discovery Shower Control The Built in Discovery Shower Control
9. the Backplate from the Shower Control Fit the O Key over the Green Temperature Hub and onto the Brass Nut Turn the O Key anticlockwise to unscrew the Cartridge from the Body and pull the Cartridge clear O Key Lever Retainer Locking Ring Flow Lever Adapter Flow Lever Temperature Knob 27 11 12 13 14 15 16 17 18 Rotate the Cartridge 180 to reverse the inlets to the Cartridge Caution Make sure the two Cartridge Side Seals are not damaged Refit the Cartridge into the Shower Control Body make sure that the lugs engage in the slots in the Body Note To assist in refitting the Cartridge rotate 45 i e with the inlet seals at 2 and 8 o clock and push into the Shower Control then rotate to align the lugs with the slots in the body and push fully home refer to illustration Important Make sure that the side seals do not extrude from the Shower Control Body when pushing the cartridge in Damage to these seals will result in a leak from the shower outlet Cartridge Lugs Carefully push the Cartridge into the Shower Control Body and rotate Tighten the Brass Nut using the O Key supplied Remove the O Key Note If the O Key has become trapped under the Yellow lugs on the Flow Control rotate them until the O Key can be removed Note The Flow Control Lugs on pre 2006 models are Black Caution Make sure that the Yellow Lugs are returned to the
10. with a soft cloth Do not use descalents on this product In service Tests The principal means for determining the continuing satisfactory performance of the mixing valve is the in service test Follow the procedure detailed in the flow diagram In service Test Procedure Frequency of In service Tests Commercial non domestic installations Check for correct blend setting every 6 months Follow the procedure detailed in the flow diagram In service Test Procedure every 12 months 32 Y Measure and record supply temperatures and pressures Make sure that they are within Valve specifications Measure and record blend temperature and flow rate Has flow rate fallen Check and clean checkvalves significantly or fallen strainers and outlet below minimum flow Yes Y specification Measure and record blend temperature and flow rate No Has flow rate Yes improved Carry out a performance check Refer to the commissioning procedure No Y Has the blend temperature changed by more than 2 C from Yes previous recorded value Refer to section Fault No Diagnosis Y Carry out the commissioning procedure Note All measurements and results should be recorded in the Log Book Flow Diagram In service Test Procedure 33 Filters Exposed Models To clean or repla
11. 1 Connect the hot and cold supply pipes and tighten the Compression Nuts Caution Make sure that the Olives are fitted and all pipework is flushed through before connecting to the Shower Control 1 12 Fit the outlet pipework leaving enough pipe through the wall to temporarily cap off 1 13 Turn on the water supplies and check for leaks 19 Ee Backplate Securing Hole Backplate Rotate for Securing Hole Suitable Fixing Point Countersunk Fixing Hole Outlet Pipe to Fittings Securing 1 Ecc SL Cold Supply ot Supply a 1 14 Attach the Building in Shroud to the Shower Control using the two Securing Screws 1 15 Using the Finished Wall Indicator on the Building in Shroud as a guide finish the wall Caution Make sure that the finished wall is within the maximum and minimum limits or the control components will not fit correctly 1 16 Remove the Building in Shroud Retain the two Securing Screws for fitting the Backplate 1 17 Fit the Shower Fittings refer to your Fittings Installation and User Guide for instructions 1 18 Fit the Concealing Plate and Control Assembly refer to section Control Assembly 20 Maximum Minimum Limits Finished Wall Fond Min 2 Solid Wall or Stud Partition Using Rear
12. 47 Seal Pack Identified C 1595 048 Component Pack 1595 065 Filter 2 off 1595 231 O Key 1595 232 24 mm Spanner 1595 043 090 95 1595 037 1595 232 1595 048 37 Built in Thermostatic Shower Control 1595036 Temperature Hub Assembly 1595 037 Handle Pack 1595 038 Handle Adapter Pack 1595 039 Cartridge Assembly Pack 1595 044 Concealing Plate Assembly 1595 046 Seal Pack Identified A 1595 066 Filter Pack 1595 067 Screw Pack Identified B 1595 070 Component Pack 1595 149 Outlet Nipple Pack 1595 150 Elbow Pack 1595231 O Key 1595 149 B 1595 066 O 1595 150 C L 1595 044 1595 037 I su 1595 231 ect SS 1595 070 38 NOTES 39 CUSTOMER SERVICE Guarantee of Quality Mira Showers guarantee your product against any defect in materials or workmanship provided that it is installed and maintained in accordance with the instructions given in this guide To validate the guarantee please return your completed registration card within 30 days of product installation 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 of the guarantee The guarantee on any exchanged parts or product ends when
13. Bearing over the Lever Retainer Note Align the Grey Control Bearing with the Lever Retainer Clips and not the Flow Control Lever Refer to section Commissioning for maximum temperature setting and temperature knob assembly 26 Flow Lever Green Temperature Hub Lever Retainer Clips REVERSED SUPPLIES The Discovery Shower Control is supplied with inlet connections Hot Left Cold Right and Bottom Outlet as standard If the hot and cold water supply pipes have been reversed during installation the following procedure must be performed 1 2 3 nons Important Do not remove for Built in Model Isolate the hot and cold water supplies Operate the Flow Lever and Temperature Knob to drain any residual water Rotate the Temperature Knob fully clockwise and carefully pull it off Note If the knob does not come off rotate it fully anticlockwise pull on the Temperature Knob while slowly rotating it clockwise until it disengages Remove the Grey Control Bearing Pull off the Flow Lever Remove the Flow Lever Adapter Exposed Models only illustrated a Carefully remove the Locking Ring b Rotate the Lever Retainer clockwise to disengage and remove Built in Models only a Carefully unclip the Concealing Plate from the Backplate Important The Lever Retainer must not be removed Note Use a screwdriver in the cutout to assist separation b Unscrew the two Securing Screws and carefully remove
14. Fixing Points on Shower Control 2 1 Refer to section 1 Solid Wall or Stud Partition Using Securing Brackets Mounting off Front Face and follow steps 1 1 to 1 4 2 2 Cut away the plasterboard or brick work to the required depth Important This depth X will depend onthe finished wall thickness e g tiles or facia board Refer to the table for this measurement For stud partitions depth X refers to the distance from the rear mounting e g timber noggin to the front of the wall before tiling Finished Wall Surface Finished Wall Thickness Rear Support Depth X Finished Wall Thickness A e g tile and adhesive Val GION Dept os Important Total building in depth X Finished Wall Thickness must not exceed an absolute maximum of 85mm 21 2 3 2 4 2 5 2 6 Mark the positions of the Fixing Screw holes on the wall For solid walls drill two 6 mm holes for the Wall Plugs Insert the Wall Plugs supplied and attach the Shower Control to the wall with the Securing Screws provided Note For stud partition installations alternative fixings may be required not supplied to fix the shower control to the rear face of the wall cavity or to a timber noggin Refer to section 1 Solid Wall or Stud Partitio
15. ate Assembly Important The Lever Retainer must not be removed Note Use a screwdriver in the cutout to assist in the separation 8 Unscrew the two Securing Screws and carefully remove the Backplate from the Shower Control 9 Unscrew the Filter Caps with the O Key supplied or a 12 mm hexagonal key 10 Using pliers carefully pull out the Inlet Filters 11 Clean each Filter in turn under a jet of water to remove any lodged particles 12 Refit the Filters 13 Refit and tighten the Filter Caps 14 Restore the hot and cold water supplies and check for leaks 15 Fitthe Backplate to the Shower Control and secure with the two Securing Screws Make sure that the Foam Seal is fully compressed Do not overtighten 16 With the cutout atthe bottom slide the Concealing Plate over the Shower Control engage the crosses in the Concealing Plate with the square recesses in the Backplate and push firmly until the Concealing Plate clicks into position 17 Refer to the section Installation Control Assembly and follow steps 8 to 12 QUO Ua 35 TYPE 2 VALVES Application The approved designations for Type 2 Valves are as follows Mob Designation LPS HPS The permitted application details are Designation Operating Application Mixed Water Pressure Range Temperature C 41 C Maximum High Pressure 41 C Maximum t Mixed water temperature at discharge point Important For TMV2 installations the mixed water t
16. ce the inlet filters 1 Isolate the hot and cold water supplies 2 Operate the Flow Lever to drain any residual water Remove the Elbow Shrouds Unscrew the Filter Caps with the O key supplied or a 12 mm hexagonal key Remove the Elbow Retaining Clips Carefully pull out the Inlet Filters Clean each filter in turn under a jet of water to remove any lodged particles Refit the Inlet Filters Refit the Elbow Retaining Clips and tighten the Filter Caps Caution Make sure that the Elbow Retaining Clips are fitted vertically as illustrated otherwise the Elbow Shrouds will not fit correctly 10 Restore the hot and cold water supplies and check for leaks 11 Refit the Elbow Shrouds Bo Qu Ne Filter Cap Elbow Retaining Clip 34 Filters Built in Models To clean or replace the inlet filters Note Refer to the section Installation Control Assembly for illustrations 1 Isolate the hot and cold water supplies 2 Operate the Flow Lever and Temperature Knob to drain any residual water 3 Rotate the Temperature Control Knob fully clockwise and carefully pull it off Filter Note If the knob does not come off rotate it fully anticlockwise pull on the Temperature Knob while slowly rotating it clockwise until it O Seal Filter Cap disengages Remove the Grey Control Bearing O Pull off the Flow Lever PA Remove the Flow Lever Adapter Carefully remove the Concealing Pl
17. covery Thermostatic Mixer d x 15 mm NU ff y Keep DS Db 1x0 Key ZF sum m B 4x 12 UMin Flow Regulator uu L 4x25 mm Hexagon Key Cc TT Q 2x wall Plugs 2 x Concealing Caps a 2 x Concealing Cap Seals ul 1x24 mm Spanner 2 x Securing Screws L 1 x Guarantee Registration Document E 1 x Installation Template Built in Discovery Thermostatic Mixer L 1x Mira Discovery Thermostatic Mixer L 4 x Control Assembly attached to the Building in Shroud L 3x 15mm Compression Nuts o eal mga AWS LY 2x wat Plugs L 1x 12 UMin SM rs Flow Regulator cn AU AUS L 2 x Securing Screws Q Q Q Q Z Q oll xx ND A KE 2 x M5 x 40 Screws L 2 x Securing Brackets L 1 x Guarantee Registration Document Exposed Discovery Shower Control 4 as Built in Discovery Shower Control LI il li 1 ZS UNS 30 67 85 67 Building in Depth 0183 Dimensions in mm SPECIFICATIONS Operating Parameters For Type 2 valves the supply conditions specified in section Type 2 Valves Application take precedence over the operating parameters which follow Pressures Max Static Pressure 10 Bar Max Maintained Pressure 5 Bar Min Maintained Pressure Gravity System 0 1 Bar 0 1 bar
18. d Supplies rrr hern aa Karona radaran ansaa E eun ER 27 COMMISSIONING eren tiennent noct a 29 Operation enrichir eR PER ER RRRRRRRRDRRREREEIRRRRRRRRR RR Ra RRE 30 Fann DIAGNOSIS ainiin RA 31 INANE IAIN CO ass Fac exten e EEE onsen sie EEEE 32 MY PO 2 VAN CS enea fx ncisn cas exduapuerccenesues cde cosets cexdesecessevagesensxesepnterce 36 erimus TE 37 aC cT n 38 Customer Service cccccccesssecceeeesseeeeeeessneeseeeeseeeseeeeseeeeeeeeeseaes Back Page INTRODUCTION 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 Discovery Thermostatic Mixer is a Thermostatic Shower Control with separate flow and temperature controls A 12 L Min flow regulator is supplied for high pressure systems to reduce excessive shower force The Thermostatic Mixer incorporates a wax capsule temperature sensing unit which provides an 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 Mira Discovery Exposed Thermostatic Mixer for connection to rising falling or rear entry pipework supp
19. either side of the Shower Control to allow the hot and cold inlet Compression Nuts to be tightened with the Spanner supplied For solid walls drill the Backplate holes with a 6 mm drill and fit the Wall Plugs supplied For other types of wall structure alternative fixings not supplied may be required Fit the supply pipework centres set 35 mm from the finished wall surface Hot Left Cold Right Note If the connections are reversed complete the installation then refer to section Reversed Inlet Supplies before commissioning Loosen the Grubscrew and remove the Backplate from the Shower Control 16 9 I pr e ag j 35 mm v somm Sw cu Supply S p Wall plugs Hot Supply 2 7 Attach the Backplate to the wall using the Fixing Screws supplied Note The Grubscrew should be at the bottom Caution It is essential at this point thatthe supply pipework is thoroughly flushed through before connection to the Shower Control Failure to do so may result in product malfunction 2 8 Fit the Connector Covers and O Seals onto the pipework 2 9 Fitthe Compression Nuts and Olives onto the pipework 2 10 Align the Shower Control with the pipework and fit onto the Backplate 2 11 Tighten the Compression Nuts onto the Shower Control with the Spanner supplied Caution Take care not to damage the chrome surfaces 2 12 Tighten the Grubscrew to secure the Shower Control to the Bac
20. emperature at the discharge point should never exceed 46 C In order to achieve the safe water temperatures expected of a Type 2 Valve it is essential that the valve is used only for the applications covered by its approved designations with the appropriate water supply pressures and temperatures and it is commissioned maintained and serviced in accordance with the recommendations contained in this guide refer to the section Maintenance In Service Tests for in service test frequency that must be used as a minimum guide in Type 2 installations Supply Conditions For applications where a Type 2 Valve is required the supply conditions must comply with the values in the Table below Note that both hot and cold supply pressures must lie within the same pressure range Range Maximum Static Maintained Pressure Hot Supply Temperature C 55 to 65 55 to 65 Cold Supply J Temperature C 529 s 25 Valves operating outside these conditions cannot be guaranteed to operate as Type 2 Valves 36 SPARE PARTS Exposed Thermostatic Shower Control 090 95 Pipe Concealing Plates 1595 036 Temperature Hub Assembly 1595 037 Handle Pack 1595 038 Handle Adapter Pack 1595 039 Cartridge Assembly Pack also includes components identified D 1595040 Body Trim 1595 041 Elbow Shroud Pack Identified A 1595 042 Elbow Pack Assembly Identified B 1595 043 Mounting Assembly Pack 1595045 Outlet Nipple Pack 1595 0
21. es Team is comprehensively trained to provide every assistance you may need help and advice spare parts or a service visit 5181 0584 1087464 W2 B B92A Mira is a registered trade mark of Kohler Mira Limited The company reserves the right to alter product specifications without notice www mirashowers co uk Spare Parts We maintain an extensive stock of spares and aim to provide support throughout the product s expected life Genuine Mira spares can be purchased direct from Customer Services or from approved stockists or merchants locations on request Spare parts will normally be despatched within two working days Payment can be made using most major Credit or Debit cards 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 the date of purchase Spares that have been supplied directly from us can be returned within one month from the date of purchase providing that they are in good order and the packaging is unopened Note Returned spares will be subject to a 1596 restocking charge and authorisation must be obtained before return Please contact our Customer Services Team Note In the interests of safety spares requiring exposure to mains voltages should only be fitted by competent persons Service Repairs Our Service Force is available to provide a quality service ata reasonable cost You will have the assurance of a Mira
22. fit the Control Assembly Note The Flow Control Lugs on pre 2006 models are Black 1 Rotate the Temperature Knob fully clockwise and carefully pull it off 2 Remove the Grey Control Bearing 3 Pull off the Flow Lever 4 Remove the Flow Lever Adapter Important The Lever Retainer must not be removed 5 Carefully unclip the Concealing Plate from the Backplate Note Use a screwdriver in the cutout to assist separation 6 Fit the Backplate to the Shower Control and secure with the two Securing Screws removed from the Building in Shroud Make sure that the Foam Seal is fully compressed Do not overtighten 7 With the cutout at the bottom locate the Concealing Plate over the Shower Control engage the crosses in the Concealing Plate with the square recesses in the Backplate and push firmly until the Concealing Plate clicks into position 25 Flow Control Yellow Lugs Concealing Plate Grey Control Bearing Temperature Knob Note If the knob does not come off rotate it fully anticlockwise pull on the Temperature Knob while slowly rotating it clockwise until it disengages 10 11 12 Align the Green Temperature Hub with the Lever Retainer Clips as illustrated Slide the Flow Lever Adapter over the Cartridge and onto the yellow lugs on the Flow Control exactly as illustrated Push the Flow Lever onto the Flow Lever Adapter align lugs as illustrated Push the Grey Control
23. fully clockwise position before restoring the water supplies Restore the hot and cold water supplies and check for leaks Exposed Models Only a Fit the Lever Retainer with the clips horizontal make sure both sides locate under the lip and rotate anticlockwise b Fit the Locking Ring Built in Models only a Fit the Backplate to the Shower Control and secure with the two Securing Screws Make sure that the Foam Seal is fully compressed b With the cutout at the bottom slide the Concealing Plate over the Shower Control engage the crosses in the Concealing Plate with the square recesses in the Backplate and push firmly until the Concealing Plate clicks into position Refer to the section Installation Control Assembly and follow steps 8 to 12 28 COMMISSIONING The Thermostatic Shower Control is preset to approximately 43 C at the factory If adjustment is required set the maximum temperature as follows For Type 2 installations the maximum blend temperature is determined by the application refer to the section Type 2 Valves Application Flow Rate Note Make sure that any inlet isolating valves are fully open If excessive flow rate is experienced from the Shower Control install the supplied Flow Regulator refer to the Discovery Fittings Installation and User Guide Setting the Maximum Temperature 1 Rotate the Temperature Control Knob fully clockwise full cold position and carefully pull it off
24. kplate 2 13 Fit the Shower Fittings refer to your Fittings Installation and User Guide for Instructions 2 14 Turn on the hot and cold water supplies and check for leaks 2 15 Refit the Elbow Shrouds 2 16 Position the Connector Covers so that they slope away from the wall and slide them down the pipework until they are flush with the Elbow Shrouds 2 17 The shower control is preset to approximately 43 C at the factory If adjustment is required refer to the section Commissioning 17 Nut 74 2 em Backplate Securing Screws t gt room NO Connector cover Elbow Shroud Q Jl Secure the Control to the Backplate with the Grubscrew Built in Shower Control 1 Solid Wall or Stud Partition Using Securing Brackets Mounting off Front Face 1 1 1 2 1 3 1 4 1 5 1 6 Determine the route for the hot and cold supply pipework and for the outlet pipework When connecting to the BIV Shower Fittings it is recommended that the outlet be positioned above and to one side of the Shower Control This is to prevent the Flexible Hose from obstructing the Shower Controls Remove the two Securing Screws retain for later use and remove the Shower Control from the Building in Shroud Mark the position of the Shower Control using the Building in Shroud as a guide Mark the routes for the hot and cold supply pipework at 135 mm centres Falling Supplies For falling supplies loo
25. lied complete with Mira Discovery Shower Fittings Mira Discovery Built in Thermostatic Mixer for connection to concealed pipework supplied complete with Mira Discovery Shower Fittings This product has been certified as a Type 2 valve under the BUILDCERT TMV2 scheme This product also complies with the Water Supply water fittings Regulations 1999 Patents and Design Registration GB 2 291 693 2 392 225 2 421 297 Euro 1 672 257 DE FR GB IT NL SE Germany 695 13 455 8 France 0 694 721 USA 7 240 850 Patent Applications Euro 03254070 0 USA 2006 0124758 A1 11 804 631 Design Registration 000351887 0001 0006 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 Guarantee For domestic installations Mira Showers guarantee the Mira Discovery against any defect in materials or workmanship for a period of three years from the date of purchase shower fittings for one year For non domestic installations Mira Showers guarantee the Mira Discovery against any defect in materials or workmanship for a period of one year from the date of purchase For terms and conditions refer to the back cover of this guide Recommended Usage Application Domestic Light Commercial Heavy Commercial Healthcare SAFETY WARNINGS
26. mid MM Discovery MIRA DISCOVERY THERMOSTATIC MIXER Installation and User Guide These instructions are to be left with the user CONTENTS Introduction e sree aAA ERa EEEE EEEE 3 Patents and Design Registration ssee 3 TUE TES D T P ERUNT PRIN 4 Safety Warnings eeeieseiieiieseieceeeseee nente ccce sas sect rA 5 Pack Gontents retener arean exe enne Un IER ER Ra RR ARA ERR Eaa 6 DimensiOns inononntt retro ne non ruote ore dareen a aniar angani dar RR RN R ER RRRRRPRSIEI 8 Specifications iier aaan appresa asai kata EE ErRRXRRRER Ra xERe 9 Operating Parameters ascribi reete pet tertia ton 8 INcItugm 11 Suitable Plumbing Systems sseseeeen 11 Cruce 11 Installation Methods rre eren deni nea exea de a eat 13 Exposed Shower Control sssssssssssssee 14 TV Rear Supplies accetto ee regente n etd bd 14 2 Rising or Falling Supplies ssss 16 Built in Shower Control eren inea tanen deep I band 18 1 Solid Wall or Stud Partition Using Securing Brackets Mounting off Front Face 18 2 Solid Wall or Stud Partition Using Rear Fixing Points on Shower Control 21 3 Laminated Panels Using Securing Brackets Mounting off Rear Face 23 Control Assembly cioe eerte ter eee eee E a E 25 Reverse
27. n Using Securing Brackets Mounting off Front Face and follow steps 1 10 to 1 18 22 Outlet Pipe to Fittings Securing Cold Supply Sy Hot Supply 3 Laminated Panels Using Securing Brackets Mounting off Rear Face Note For laminated panels the shower control must be positioned from the rear of the panel Panel thickness must be between 4 and 12 mm if a thicker panel is used it will be necessary to recess the securing brackets into the rear of the panel Important Make sure that there is a minimum clearance of 64 mm behind the laminated panel to house the shower control 3 4 Remove the two Securing Screws ae M5 Fixing Hole retain for later use and remove the aoii Shower control from the Building in Shroud 3 2 Mark the position of the Shower Control using the Building in Shroud as a guide 3 3 Carefully cut out the laminated Q panel 3 4 Fit the Securing Brackets to the Shower Control L Important The brackets must be LI fixed vertically as illustrated Backplate Important Make sure that the securing Hole correct holes are used otherwise the Backplate cannot be fitted M5 Fixing Hole 3 5 Position the Shower Control on the front of the panel and mark the position of the M5 fixing holes Important Make sure that the correct holes are used refer to illustration Note Make sure that the Filter Plugs are positioned so that they can be removed for servicing
28. ontrol with the pipework and fit onto the Backplate 1 12 Tighten the Compression Nuts onto the Shower Control with the Spanner supplied Compression Nut Caution Take care not to damage the chrome surfaces 1 13 Tighten the Grubscrew to secure the Shower Control to the Backplate uu 0 Secure the Control LX to the Backplate with M 7 the Grubscrew Olive Elbow Shrouds 1 14 Fit the Shower Fittings refer to your Fittings Installation and User Guide for instructions 1 15 Turn on the hot and cold water supplies and check for leaks 1 16 Refit the Elbow Shrouds 1 17 The Shower Control is preset to approximately 43 C at the factory If adjustment is required refer to section Commissioning 15 2 Rising or Falling Supplies 2 1 2 2 2 3 2 4 2 5 2 6 Remove the Elbow Shrouds from the Shower Control Rising Supplies Loosen the Grubscrew on each Elbow using the 2 5 mm hexagon key supplied and pull off the Elbows from the Shower Control Refit each Elbow on the opposite side and rotate 90 as required Retighten the Grubscrews Caution Do not overtighten Falling Supplies Loosen the Grubscrew on each Elbow using the 2 5 mm hexagon key supplied and rotate the Elbows 90 as required Retighten the Grubscrews Caution Do not overtighten Use the Installation Template to mark the positions of the fixing holes for the Backplate Note Allow a minimum of 150 mm
29. orce the Temperature Control Knob If the desired temperature cannot be achieved refer to the section Commissioning 30 FAULT DIAGNOSIS Symptom Cause Rectification Only hot or cold a Inlets reversed hot supply to cold supply Refer water from the to section Reversed Supplies Mixer outlet b No hot water reaching the Mixer c Check the Filters for any blockage d Installation conditions outside operating parameters refer to sections Specifications and Commissioning Fluctuating or a Check the Showerhead Hose and Filters for any reduced flow rate blockage b Make sure the maintained inlet pressures are nominally balanced and sufficient refer to section Specifications c Make sure the inlet temperature differentials are sufficient refer to section Specifications d Flow Regulator fitted incorrectly e Airlock or partial blockage in pipework No flow from the a Check the Showerhead Hose and Filters for any Mixer outlet blockage b Hot or cold supply failure Blend temperature a Refer to symptom 2 above drift b Significant supply temperature fluctuation c Significant supply pressure fluctuation d Faulty Thermostatic Cartridge renew Maximum blend a Indicates incorrect maximum temperature setting temperature refer to section Commissioning setting too hot or b Refer to symptom 4 above too cold Water leaking from
30. quired Drill the supply pipe holes at 153 mm centres Recess the wall to allow for the concealing plates 32 mm diameter x 10 mm deep Fit the supply pipework Hot Left Cold Right The pipework must project 18 mm from the finished wall surface at 153 mm centres use the installation template as a guide Note If the connections are reversed complete the installation then refer to section Reversed Inlet Supplies before commissioning Loosen the Grubscrew with the 2 5 mm hexagon key supplied and remove the Backplate from the Shower Control Secure the Backplate to the wall using the Fixing Screws supplied Note The Grubscrew should be at the bottom Fit the Concealing Plates Note Apply silicone sealant to the back face of the flange 14 150 mm 150 mm 153 mm Ecos ccs em 40 mm N 15 mm 6 mm 10 mm depth x 232 mm for Concealing Plates Wall Shower Control Backplate Apply Silicone S a LL Lm plugs i 2153 mm S Grubscrew Concealing Plate ealant Caution It is essential at this point thatthe supply pipework is thoroughly flushed through before connection to the Shower Control Failure to do so may result in product malfunction 1 9 Putthe Compression Nuts and Olives onto the pipework 1 10 Remove the Elbow Shrouds from the Shower Control 1 11 Align the Shower C
31. sen the grubscrew on each Elbow using the 2 5 mm Hexagon Key supplied Remove the Elbows and install on opposite sides Secure the Elbows with the Grubscrews Caution Do not overtighten Note Make sure that the Filter Plugs are positioned to the front i e Hexagonal Key facing forward Mark the route for the outlet pipework Note The Outlet Elbow should be sited above the Shower Control and on the right or left as site dictates Remove the plasterboard and brick work to a minimum depth of 62 mm 18 Alternative Pipe Layouts Outlet Pipe BIR Outlet Pipe BIV Hot Inlet O Cold Inlet Shower Control Outlet Pipe BIV 4 6mm Min II Finished Wall Finished Wall Surface T PH 24 mm Max Finished Wall 62 mm Min 1 7 Fit the Securing Brackets to the Shower Control Important Make sure that the correct holes are used otherwise the Backplate cannot be fitted Note The Securing Brackets can be rotated for suitable fixing points 1 8 Markthe positions forthe Countersunk Fixing Holes on the wall 1 9 For solid walls drill two 6 mm holes for the Wall Plugs Caution Do not drill into pipes in the wall 1 10 Fit the Wall Plugs supplied and fix the Shower Control to the wall with the Securing Screws provided Note For stud partition installations alternative fixings may be required not supplied 1 1
32. the normal product guarantee period expires Not covered by this guarantee Planned maintenance or replacement parts required to comply with the servicing requirements of the TMV 2 and TMV 3 healthcare schemes where applicable Damage or defects arising from incorrect installation improper use or lack of maintenance including build up of limescale Damage or defects if the product is 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 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 Servic
33. trained engineer agent genuine Mira spare parts and a 12 month guarantee on the repair Payment should be made directly to the engineer agent who will accept most major Credit or Debit cards 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 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 E mail sales modernplant ie Fax Dublin 01 459 2329 Post Otter House Naas Road Clondalkin Dublin 22 mira Door SHOWERS FM 14648 Kohler Mira Limited January 2009
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