SHOWER FITTINGS Installation & User Guide MIRA
Contents
1. Temperature Temperature Control Hub Lug Temperature Stop Sleeve Temperature Spindle Maximum Temperature Setting 17 FAULT DIAGNOSIS Read the section Important Safety Information first Provided that the BSM has been correctly installed and is operated in accordance with the instructions contained in this guide difficulties should not arise If any maintenance is required then it must be carried out by a competent tradesperson for whom the fault diagnosis chart and maintenance instructions are provided Before replacing any parts make sure that the underlying cause of the malfunction has been identified Cause Rectification il Only hot or cold water from mixer outlet Fluctuating or reduced flow No flow from mixer outlet Blend temperature drift Maximum blend temperature setting too hot or too cold Inlet supplies reversed Make sure that the hot supply is connected to the left and the cold supply to the right hand inlet when viewed from the front The thermostatic cartridge 1598 022 is fitted incorrectly Make sure that the hot inlet marked H is on the left side Check that the inlet filters are not blocked Make sure that the minimum flow rate is sufficient for the supply conditions Make sure that the maintained inlet pressures are nominally balanced and sufficient Make sure that the inlet temperature differentials are sufficient Check the thermostatic performance Flow reg2. These instructions are to be left with the user amp PlumbNation the nation s favourite for FREE SHIPPING SECURE PAYMENTS on all orders over 100 to mainland UK shop online with confidence FINANCE AVAILABLE PRICE MATCH spread the cost with low interest rates always get the best deals available we have HUGE REDUCTIONS ON THOUSANDS OF ITEMS Boilers Bathroom suites aa eae eee siecle aaah ee cena Pipes amp fittings Wet rooms Cylinders Towel warmers Fres Bathroom furniture Renewable energy amp much more Can visit our website a plumbnation co uk 0844 800 3460 CONTENTS IntfOdUGHON rcn naren EE TES E 3 DGS Cr ition aiii ceed ee cene de stone et cena eeeucuetcteenteeceens 3 Important Safety Information nnn unanseensnnnnen sense nenensnnnenennnnennsenvenenn 3 Pack Contents Checklist annae nee eeen eeen ennnen veen snnanennenannenenenn 4 Dimensions stine cas eect eee keendeemeldinnnes teams econ eaeteedty 5 Specifications sds et ceceevcceacecsstecdeessnnecerediecsvader eunesesersecdesseneueseasecuee 6 GONMMECHONS ss zander aed beds aaa ce a eenden ade benden 6 WG IG IIE saeco A A E O E A hee aden 6 Temperature Control nisasie ea a E 6 Flow ContfOl cirian peona aaea eniai iaraa aleen ens 6 Operating Parameters cirina ieee vile E iE 7 Inlet Supply Pressure nnnnnnennenrenneernennneerenenenee rene vennervenneen vennen 7 Inlet Supply Temperatures nanne neen nen nennen re
3. flow rate to the burner A drop tight pressure reducing valve MUST be fitted if the supply pressures exceed 5 bar maintained An expansion vessel MUST be fitted and regularly maintained as shown in the diagram below to ensure that excess pressures do not damage the product This may already be fitted within the boiler check with the manufacturer and is in addition to the normally larger central heating expansion vessel The hot supply temperature MUST be at least 12 C hotter than the required blend temperature for optimum performance Note For combination boilers you must remove the green flow regulator supplied installed in the hot inlet and replace it with the white flow regulator supplied Refer to section Maintenance Flow regulator paaa Removal Gravity fed supplies The BSM MUST be fed from a cold water storage cistern and hot water cylinder providing nominally equal pressures Note For gravity fed supplies you must remove the hot and cold inlet flow regulators and the outlet flow regulator to make sure that the maximum flow rate is achieved Refer to section Maintenance Flow regulator Removal Mains pressurised instantaneous hot water supplies heated from a thermal store Packages of this type fitted with a tempering valve can be used A drop tight pressure reducing valve MUST be fitted if the suppl
4. quad key supplied or a 12 mm hexagonal wrench Remove the red shower flow regulator from the shower outlet nipple Note For very low pressure systems lt 0 2 bar a greater shower flow can be obtained by removing the shower non return valve from the nipple If this is necessary remove the retaining circlip using circlip pliers and push the non return valve from the nipple Carefully push back and lift off the cover shroud and the seal Unscrew the 2 body retaining screws using the 5 mm hexagonal wrench supplied and lift the body from the manifold Unscrew the hot and cold inlet non return valve housing from the manifold using a suitable spanner Remove the 2 green flow regulators Refit both the non return valve housings and tighten with a spanner in a clockwise direction Note The plastic housing must be fitted in the hot left inlet and the brass housing must be fitted in the cold right inlet Refit the bath and shower mixer on the manifold and refit the 2 body retaining screws Refit the cover shroud and seal Caution Make sure that the front lip of the cover shroud is located into the slot at the front of the BSM body Refit the flow divertor lever and slip ring and tighten the 2 flow divertor lever retaining screws Refit the shower outlet nipple and the shower outlet hose Turn on the hot and cold water supplies and check for any leaks 22 17 Refit the temperature control hub tighten the hub screw and refit t
5. GL52 5EP Northern Ireland Wm H Leech amp Son Ltd Telephone 028 9044 9257 Mon to Fri 9 am 5pm Fax 028 9044 9234 Post Maryland Industrial Estate Ballygowan Road Moneyreagh Co Down BT23 6BL Republic of Ireland Modern Plant Ltd Telephone 01 4591344 Mon to Fri 9am to 5pm Fax Dublin 01 4592329 Post Otter House Naas Road Clondalkin Dublin 22 mira mn SHOWERS FM 14648 Kohler Mira Limited January 2006
6. Note The cartridge s contain no internally serviceable parts When installed in very hard water areas above 200 p p m temporary hardness your installer may advise the installation of a water treatment device to reduce the effects of limescale formation Cleaning 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 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 Check for correct blend setting every 6 months Follow the procedure detailed in the flow diagram In service Test Procedure every 12 months 20 Measure and record supply temperatures pressures and make sure that they are within the valve specification Measure and record blend temperature and flow rate Has flow rate fallen significantly or fallen below minimum flow specification 2 Check and clean checkvalves strainers and outlets v Measure and record blend temperature and flow rate Has flow rate improved 2 Yes No Yv Carry out a Per
7. ad key supplied or a 12 mm hexagonal wrench Remove the red shower flow regulator Remove the circlip and the non return valve from the nipple Rinse the non return valve and clean out any debris or renew if necessary refer to section Spare Parts Note For the shower only go to instructions 16 and 17 Pull off the temperature control knob Unscrew the hub screw using the 3 mm hexagonal wrench supplied and remove the temperature control hub Unscrew the 2 flow divertor lever retaining screws using the 3 mm hexagonal wrench supplied and remove the flow divertor lever and slip ring Carefully push back and lift off the cover shroud and the seal Unscrew the 2 body retaining screws using the 5 mm hexagonal wrench supplied and lift the body from the manifold Unscrew the hot and cold inlet non return valve housings from the manifold using a suitable spanner Remove the 2 green flow regulators Rinse the non return valves and clean out any debris or renew if necessary refer to section Spare Parts Refit the 2 green flow regulators into the non return valve housings Refit the non return valve housings into the manifold and tighten with a spanner in a clockwise direction Note The plastic housing must be fitted in the hot left inlet and the brass housing must be fitted in the cold right inlet Refit the bath and shower mixer on the manifold and refit the 2 body retaining screws Caution Make sure that the fron
8. ap window at top Reassembly of the Thermostatic Cartridge 30 10 11 12 13 14 15 16 17 Line up the temperature control gear with the cartridge spacer push on and rotate anti clockwise through 180 Refit the flow control gear and line up with temperature control gear using the temperature setting tool Refit the idler gear and tighten the screw Caution Do not overtighten the screw as damage may occur causing the idler gear to jam on the bush Temperature Control Gear hae Temperature Setting Tool Idler Gear ee Flow Control Gear Temperature Setting Tool Place the temperature setting tool over the flow control gear and tighten the screw Refit the cover shroud and seal Caution Make sure that the front lip of the cover shroud is located into the slot at the front of the BSM body Refit the flow divertor lever and slip ring and tighten the 2 flow divertor lever retaining screws Refit the outlet nipple and the shower outlet hose Turn on the hot and cold water supplies and check for any leaks Set the Maximum Temperature Refer to section Maximum Temperature Setting Temperature Setting Tool Flow Control Gear Temperature Setting Tool 31 Replacement of the Flow Cartridge 1 2 3 10 11 12 13 14 15 16 17 18 19 20 21 22 Turn off the hot and cold water supplies Pull off the temperature control knob Unscrew the hub scre
9. ction Maximum Temperature Setting The actual temperature may vary depending on the supply conditions 3 Turn the flow divertor lever to shower mode Check that an adequate spray pattern is delivered from the shower head and measure the shower temperature This is automatically set when the flow divertor is turned to shower mode 4 Turn the flow divertor lever to the OFF position Note Draining of residual water held in the outlet fittings may continue for a period after the flow is shut off 16 Maximum Temperature Setting 1 2 3 Pull off the temperature control knob Remove the hub screw using the 3 mm hexagonal wrench supplied and remove the temperature control hub Rotate the flow divertor lever to bath mode Rotate the cartridge temperature spindle using the temperature control hub until the desired bath outlet temperature is obtained from the bath spout clockwise decrease temperature Once the desired maximum blend temperature has been achieved 46 C is recommended for bath fill refit the temperature control hub without disturbing the spindle positioning the hub such that the lug on the temperature hub is against the left hand side of the temperature stop sleeve refer to illustration Check that the blend temperature has not altered refit and tighten the hub locking screw Replace the temperature control knob Temperature Control Knob Hub Screw a SF Temperature Control Hub Flow Divertor Lever
10. e full cold to full hot or max temperature limit Note For your safety the BSM is pre set to a maximum temperature of 46 C for bath fill When diverting from bath fill to shower mode the maximum preset temperature will be reduced by approximately 6 C If you require bath fill at a hotter temperature refer to section Commissioning Maximum Temperature Setting Note An increase in bath fill maximum preset temperature will increase the shower mode maximum preset temperature We recommend that you do not increase the bath fill temperature above 48 C Warning It is essential to check the maximum temperature during commissioning as the setting will change with different supply conditions Thermostatic Temperature Control 35 C 49 C Note Shut down to seepage is only achieved if the hot supply is 12 C above the blend temperature Flow Control The mixer has an integral flow divertor No other type of user accessible flow controller should be fitted to the shower outlet Flow regulators are fitted to the inlets and to the shower outlet to control the flow at high pressures For pressures below 1 0 bar it is recommended that the flow regulators are removed refer to section Maintenance Flow Regulator Removal Operating Parameters Inlet Supply Pressure Maintained Inlet Pressures 0 2 5 bar Max Static Pressures 10 Bar Note With low pressure systems below 1 bar it may be necessary to remove the flow regulators fitted
11. ed Valves which have been in storage installed but not commissioned or simply not used for some time should be exercised before setting the maximum temperature or carrying out any tests A simple way to provide this exercise is a Make sure that the hot and cold water are available at the valve inlets turn on the flow divertor to bath mode b Turn the temperature control rapidly from cold to hot and back to cold several times pausing at each extreme Maximum Temperature The maximum blend temperature through the bath or shower outlet should be limited to prevent accidental selection of a temperature which may be too hot All Mira thermostatic mixing valves are fully performance tested individually and the maximum temperature for the Mira Excel BSM is pre set under ideal installation conditions at the factory to approximately 46 C for bath fill When diverting from bath mode to shower mode the maximum preset temperature will be reduced by approximately 6 C Site conditions may dictate that the maximum temperature has to be re set following installation or servicing To check the temperature 1 Turn the flow divertor lever to bath mode and run for several minutes in order to stabilise the temperature Make sure that the hot and cold water supplies are within Mira recommendations Refer to section Specifications 2 Turn the temperature control handle to the hot position fully anticlockwise To re set the maximum temperature refer to se
12. er supply MUST be connected to the hot inlet This is stamped H on the top of the manifold Reversed connections could be dangerous to the person using the mixer The connections when viewed from the front are Hot left Cold right Shower Outlet Backnut Adaptor Backnut be Min Min 35mm 35mm 13 10 11 For low pressure systems only make sure that you remove the three flow regulators fitted to the hot and cold inlets and to the shower outlet This will make sure that the highest possible flow rate is achieved Refer to section Maintenance Flow regulator Removal For combination boilers only make sure that the green flow regulator supplied installed in the hot inlet is replaced with the white flow regulator supplied Refer to section Maintenance Flow regulator Removal Check the installation for any leaks Fully open the isolating valves fitted to the supply pipework Install the shower fittings refer to the appropriate section in the Shower Fittings Installation and User Guide Connect the shower hose to the shower outlet of the Excel BSM This completes the installation of the Mira Excel BSM Note Following the installation of your Mira Excel BSM commissioning checks must be carried out refer to section Commissioning 14 OPERATION The Mira Excel BSM is fitted with a separate On Off flow divertor and temperature control hand
13. formance Check Refer to the Commissioning Procedure blend temperature y changed by more than Bs 2 C from previous v recorded value CP Refer to Fault 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 21 Flow Regulator Removal Three flow regulators are fitted to the product The red regulator fitted to the shower outlet on top of the Mira Excel BSM limits the maximum flow rate to the shower fitting The green regulators are fitted to the hot and cold inlets for high pressure systems These must be removed if the inlet pressure is below 1 bar For combination boilers a fourth white flow regulator is supplied with the product to make sure that the boiler can supply the Excel BSM with an adequate supply of hot water You must replace only the green flow regulator supplied installed in the hot inlet and replace it with the white flow regulator supplied 1 2 3 10 11 12 13 14 15 16 Turn off the hot and cold water supplies Pull off the temperature control knob Unscrew the hub screw using the 3 mm hexagonal wrench supplied and remove the temperature control hub Unscrew the 2 flow divertor lever retaining screws using the 3 mm hexagonal wrench supplied and remove the flow divertor lever and slip ring Disconnect the shower hose and remove the shower outlet nipple using the
14. he temperature control knob Refer to section Maximum Temperature Setting Temperature Control Knob Hub Screw Temperature Shower Outlet Nipple Red Flow ome D GE di Cover Shroud Flow Divertor Lever Retaining Screws Flow Divertor Lever Body Retaining Screws Body Plastic Non Return l Pi Valve Housing Valve Housing Green Flow Regulator Green Flow Regulator Manifold 23 Filter Cleaning Replacement Blockage of the inlet filters can lead to poor flow performance and reduced temperature control It is essential that the inlet filters are periodically cleaned or if necessary renewed as part of a preventative maintenance programme 1 2 3 11 12 13 14 15 16 Turn off the hot and cold water supplies Pull off the temperature control knob Unscrew the hub screw using the 3 mm hexagonal wrench supplied and remove the temperature control hub Unscrew the 2 flow divertor lever retaining screws using the 3 mm hexagonal wrench supplied and remove the flow divertor lever and slip ring Disconnect the shower hose and remove the shower outlet nipple using the quad key supplied or a 12 mm hexagonal wrench Carefully push back and lift off the cover shroud and the seal Unscrew the 2 body retaining screws using the 5 mm hexagonal wrench supplied and lift the body from the manifold Unscrew the filter cap from the manifold using a quad key supplied ora 12 mm hexag
15. ion 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 person not authorised by Mira Showers or our approved agents This guarantee is in addition to your statutory and other legal rights Before using your shower Please take the time to read and understand the operating and safety instructions detailed in this manual 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 who will give every assistance and if necessary arrange for our service engineer to visit If later the performance of your shower declines consult this manual to see whether simple home maintenance is required Please call our Customer Services to talk the difficulty through request 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 Mira Showers Kohler Mira L
16. k and lift off the cover shroud and the seal Unscrew the flow control gear securing screw using a 3 mm hexagonal wrench supplied and remove the flow control gear and the red temperature setting tool Turn the temperature control gear through 180 clockwise and lift off Unscrew the idler gear securing screw using a 5 mm hexagonal wrench supplied and remove the idler gear and bush Remove the 4 clamp plate screws using a 5 mm hexagonal key supplied and remove the clamp plate Remove the temperature stop sleeve and cartridge spacer Refit and secure the temperature control hub to assist in the removal of the thermostatic cartridge Pull out the thermostatic cartridge Remove the temperature control hub from the cartridge 28 Temperature Control Knob Hub Screw Temperature Control Hub Flow Divertor Lever Shower Outlet Nipple Screw Temperature Control Gear Temperature Setting Tool Flow Control Gear Cartridge Spacer 29 Cleaning and Re assembly of the Thermostatic Cartridge 1 The interior surface of the Bath and Shower Mixer body must be clean before refitting the cartridge If scale or deposits are present clean using a mild proprietary inhibited scale solvent e g domestic kettle descalent After descaling rinse valve interior thoroughly in clean water before refitting the cartridge Note The body interior must be cleaned carefully and not damaged in any way Do not use any abrasive ma
17. l Reduced pressure to cold inlet of BSM Reduced pressure to cold inlet of BSM High Inlet Pressure High Inlet Pressure Reduced pressure to unvented cylinder Reduced pressure to unvented cylinder Combined outlet PRV Cold takeoff after PRV with internal non return valves Expansion pressure taken up by Expansion vessel required unvented cylinder expansion vessel 11 Pumped supplies inlet pumps The BSM can be installed with an inlet pump twin impeller The pump MUST be located on the floor next to the hot water cylinder The hot water cylinder vent pipes must be arranged as shown to achieve air separation lt 30 to 60 Did Air Separation 12 INSTALLATION 1 The Mira Excel Thermostatic BSM can be installed on most standard baths and deck surfaces refer to illustration 2 Fitthe bath sealing gasket to the mixer with the arrow pointing forward Carefully position on the bath refer to illustration Note Make sure that the gasket provides an adequate seal If the BSM overhangs the roll of the bath then silicone sealant must be used 3 Fit the two backnut adaptors and the two 3 4 BSP backnuts and tighten Take care to prevent damage to the bath 4 Thoroughly flush out the incoming hot and cold water supplies before final connection of the Excel BSM 5 Connect the hot and cold water supplies to the inlets Important The hot wat
18. le which operate as follows 1 On Off Flow Divertor From the Off position anticlockwise movement immediately turns on the flow to bath mode full clockwise movement diverts the flow to shower mode When diverting from bath mode to shower mode the maximum preset temperature will be reduced by approximately 6 C When diverting from shower mode to bath mode the temperature will remain at the set showering temperature until adjusted by the temperature control The flow rate is determined by the supply pressures at the inlets of the product control or by the effective output power of the gas heater appliance Flow rates for gas water heaters and combination boilers can vary typically between 8 l min winter and 15 l min summer Note An amount of water may be retained in the bath spout after the flow control has been turned off This will drain over a short period of time 2 Temperature Control In either the shower or bath fill mode adjustment of temperature is achieved by clockwise rotation for cooler and anticlockwise rotation for warmer up to the preset maximum Preset maximum outlet bath temperature Temperature Control Flow Divertor Off Position Shower Mode Bath Mode Off 15 COMMISSIONING Commissioning Checks After completing the installation the following commissioning checks must be carried out Note Thermostatic mixing valves with wax capsules could lose their responsiveness if not us
19. manner in accordance with current local authority recycling or waste disposal policy naor gt If you experience any difficulty with the installation or operation of your new Bath Shower Mixer please refer to Fault Diagnosis before contacting Kohler Mira Limited Our telephone and fax numbers can be found on the back cover of this guide PACK CONTENTS CHECKLIST M Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included 1 x Mira Excel BSM 1 x Gasket O 2 x Backnut Adaptors O 2 x Backnuts O 1x Quad Key O 1x3mm Hexagonal Wrench O 1x5mm Hexagonal Wrench O Documentation 1 x Installation and User Guide O O 1 x Customer Support Brochure A G1 2 Shower 4 4 113 G3 4 Inlets 180 145 243 195 NOTE NOT TO SCALE All dimensions are in millimetres 159 SPECIFICATIONS Connections Inlets 3 4 BSP Male at 180 mm centres The connections when viewed from the front are Hot left Cold right Shower Outlet 1 2 BSP Male Mira Excel BSM is a fully thermostatic bath and shower mixer with an integral flow control and divertor It is recommended that Mira Logic Shower fittings with a 1 25 m hose are used with this mixer to optimise performance Weight Mira Excel Thermostatic BSM 6 3 Kg Temperature Control Temperature selection rang
20. ne eenennnnennee nennen 7 Installation Requirements nnnnnnnnnsnennnnnnneeeneerennnennenenannnensenrennnnnnnen 8 Typical Suitable Installations irasa 9 installation 2 sesvsnaacerverseevenaadeedenenanendndendendedenedausisiadenenessusaceddendaass 13 ODOR ATION saeco cased ssa seca aaa aa ris aar aa E S Aa aaa aa ee aaaea EEE ESEE aE 15 COMMISSIONING ssia ea aaa eaaa Ee eE SAREA EEEE 16 Commissioning CHECKS racists seve senen aasian ai 16 Maximum Temperature Setting nnen nennen nennen venen 17 Fault Diagnosis nanne nee ve nennnnneneeenenennnaenennannnnennennennnnnnnennennennn 18 Maintenant sacre a idene dede rer klub enden 20 Flow Regulator Removal tu sisis E a raad 22 Filter Cleaning Replacement neen renenner eneen vennen 24 Maintaining the Non Return Valves nn eneen eneen een 26 Removing the Thermostatic Cartridge annen eenen 28 Cleaning and Re assembly of the Thermostatic Cartridge 30 Replacement of the Flow Cartridge nnn nennen nennen een 32 eg 34 ACCOSSONICS mnnn 34 Customer Service sans annnsenennnnenenannnennennnennennennnnnanr nennen 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 DESCRIPTION This Mira Excel BSM is a fully thermostatic Bath and Shower mixer with an i
21. ntegral flow control and divertor A patented temperature re setting mechanism automatically reduces the maximum allowable temperature when diverting from bath to shower outlet For ease of installation and maintenance this product includes a separate inlet manifold which allows access to the inlet connections filters checkvalves and flow regulators It includes maintenance free cartridges a thermostatic temperature control cartridge and a ceramic divertor cartridge To make sure that the installation complies with Water Supply Regulations backflow prevention the correct type of shower fittings must be fitted IMPORTANT SAFETY INFORMATION Warning 1 Products manufactured by us are safe and without risk provided they are installed used and maintained in good working order in accordance with our instructions and recommendations Caution 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 or bath tap should be attended whilst showering or bathing Particular consideration should be given to the young the elderly the infirm or anyone inexperienced in the correct operation of the controls When this product has reached the end of its serviceable life it should be disposed of ina safe
22. ntrol gear and line up with temperature control gear using the temperature setting tool Refit the idler gear and tighten the screw Caution Do not overtighten the screw as damage may occur causing the idler gear to jam on the bush Place the temperature setting tool over the flow control gear and tighten the screw refer to illustrations Temperature Setting Tool in section Cleaning and Re assembly of the Thermostatic Cartridge Refit the cover shroud and seal Caution Make sure that the front lip of the cover shroud is located into the slot at the front of the BSM body Refit the flow divertor lever and slip ring and tighten the 2 flow divertor lever retaining screws Refit the outlet nipple and the shower outlet hose 32 23 Turn on the hot and cold water supplies and check for any leaks 24 Set the Maximum Temperature Refer to section Maximum Temperature Setting Temperature Control Knob Screw Temperature Control Hub Flow Divertor Lever Retaining Screws Flow Divertor Lever Slip Ring Cover Shroud Body Retaining Screws Temperature Control Gear Screw Temperature Setting Tool Flow Control Gear Flow Cartridge Assembly Profile Seal 33 462 01 462 04 462 05 462 06 462 08 462 10 462 14 462 15 462 16 1598 022 1598 023 1598 024 1598 025 1598 035 1598 036 1598 037 Filter Pack 2 Manifold Assembly Nuts and Gasket Flow Cartridge Assembly Cartridge S
23. onal wrench and remove the filter Clean under a jet of water or renew if damaged refer to section Spare Parts Push the filters into the filter caps and replace Tighten using the quad key supplied or a 12 mm hexagonal wrench Refit the bath and shower mixer on the manifold and refit the 2 body retaining screws Refit the cover shroud and seal Caution Make sure that the front lip of the cover shroud is located into the slot at the front of the BSM body Refit the flow divertor lever and slip ring and tighten the 2 flow divertor lever retaining screws Refit the shower outlet nipple and the shower outlet hose Turn on the hot and cold water supplies and check for any leaks Refit the temperature control hub tighten the screw and refit the temperature control knob Refer to section Maximum Temperature Setting 24 Temperature Control Knob Hub Screw Temperature Control Hub Flow Divertor Lever Shower Outlet Nipple Retaining Screws B Cover Shroud Flow Divertor Lever Body Retaining Screws Filter Cap Filter 25 Maintaining the Non Return Valves The non return valves are located inside the inlet manifold and inside the shower outlet nipple 1 10 11 12 13 14 15 16 17 18 Note For the shower only perform instructions 2 to 4 Turn off the hot and cold water supplies Disconnect the shower hose and remove the shower outlet nipple using the qu
24. pacer Flow Straightener Screw Pack Not Illustrated Seal Pack Not Illustrated Clamp Plate Thermostatic Cartridge Temperature Adjustment Pack items shown as A Handle Pack Shower Nipple Assembly Cover Shroud Pack Flow Regulator Kit Check Valve Assembly ACCESSORIES Available as an optional accessory from your local Mira Stockist 1598 009 3 4 Isolating Flexible Inlet Hose 500 mm 2 34 Spare Parts Diagram 1598 025 aS 1598 024 1598 036 1598 035 462 08 dene 1598 022 462 06 462 10 1598 037 462 04 462 01 462 05 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 confirm 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 in Northern Ireland and Republic of Ireland 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 installat
25. t in a position where it could become frozen Supply pipes must be flushed to clear debris before connecting the BSM Conveniently situated isolating valves must be fitted for servicing purposes If the BSM is to be used with a fully modulating multipoint water heater fully modulating combination boiler thermal store or unvented system an expansion vessel must be fitted to accommodate the expansion of water in the domestic hot water supply this may already be part of the system check the details on the boiler heater or contact the boiler heater manufacturer Important Three flow regulators are supplied fitted to the product These are required to limit the flow rate to the bath and shower when installed on high pressure systems gt 1 bar On low pressure systems these may need to be removed to increase the flow refer to section Maintenance Flow Regulator Removal a SP PND 2 Typical Suitable Installations Key to symbols appearing throughout this guide a Float operated valve OD Twin impeller inlet pump Q Stop or servicing valve XI Tempering valve A BSM De Mini expansion vessel le Warning or overflow pipe Dl Non return valve Drop tight pressure reducing valve gt PRV Instantaneous gas heated supplies e g combination boilers The BSM MUST be installed with a multipoint gas water heater or combination boiler of a fully modulating design i e where the water draw off rate indirectly controls the gas
26. t lip of the cover shroud is located into the slot at the front of the BSM body Refit the flow divertor lever and slip ring and tighten the 2 flow divertor lever retaining screws Refit the flow regulator into the shower outlet nipple Refit the shower outlet nipple and the shower outlet hose Turn on the hot and cold water supplies and check for any leaks 26 19 Refit the temperature control hub tighten the hub screw and refit the temperature control knob Refer to section Maximum Temperature Setting Temperature D Control Knob Hub Screw Temperature Control Hub Shower Outlet Nipple Red Flow oom D En e Cover Shroud ge Flow Divertor Lever Retaining Screws Flow Divertor Lever Body Retaining Screws Body Brass Non Return Valve Housing Plastic Non Return Vave Houd oe Green Flow ave TLOUSING Regulator Green Flow x Regulator Manifold 27 Removing the Thermostatic Cartridge 1 2 3 10 11 12 13 14 Turn off the hot and cold water supplies Pull off the temperature control knob Unscrew the hub screw using the 3 mm hexagonal wrench supplied and remove the temperature control hub Unscrew the 2 flow divertor lever retaining screws using the 3 mm hexagonal wrench supplied and remove the flow divertor lever and slip ring Disconnect the shower hose and remove the shower outlet nipple using the quad key supplied or a 12 mm hexagonal wrench Carefully push bac
27. td Cromwell Road Cheltenham GL52 5E 1056991 W2 A Mira is a registered trade mark of Kohler Mira Limited The company reserves the right to alter product specifications without notice P www mirashowers com Spare Parts We maintain an extensive stock of spares and aim to have functional parts available for ten years from the date of final manufacture of the product 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 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 at a reasonable cost You will have the assurance of a Mira trained engineer agent genuine Mira spares and a 12 month guarantee on the repair Payment should be made directly to the Service Engineer Agent using Visa MasterCard or a cheque supported by a banker s card To contact us England Scotland amp Wales Mira Showers Customer Services Telephone 0870 241 0888 8 30 am to 5 00 pm Working days 4 30 pm Friday 8 30 am to 12 30 pm Saturday E mail technical mirashowers com Fax 01242 282595 By Post Cromwell Road Cheltenham Gloucestershire
28. terial Cartridges may only be cleaned by flushing thoroughly under a jet of water to remove lodged particles Do not descale Cartridges are not serviceable and must not be dismantled If the cartridge is faulty or damaged a new one should be fitted refer to section Spare Parts Examine all accessible seals for signs of deformation or damage and renew as necessary taking care not to damage seal grooves Make sure that the insulation channel cap is aligned with the hot inlet and the face is below the surface of the cartridge sealing bore Note Make sure that the orientation is correct as illustrated below Lightly coat all seals with a silicone only based lubricant to assist reassembling Identify which is the hot inlet to the body left hand side when viewed from the front and align the cartridge accordingly stamped H on the cartridge lug Carefully push the cartridge back into the body checking that the 2 cartridge inlet seals and the hot insulation channel cap remain in place and locate the cartridge lugs into the appropriate body slots Note The cartridge is not reversible Refit the cartridge spacer and temperature stop sleeve with the upstand to the back of the product Refit the clamp plate and idler gear bush and tighten the 4 clamp plate screws Thermostatic Cartridge Hot Inlet with Insulation Cap Cartridge Installed ZI Inlet Seal N ZZZ EZZZZIIZZ Hot Insulation Channel C
29. to the product as supplied refer to section Maintenance Flow Regulator Removal Both hot and cold pressures should be nominally balanced within 10 Inlet Supply Temperatures Recommended Hot 55 C 65 C Recommended Cold 5 C 20 C Note The mixer can operate at temperatures up to 90 C for short periods without damage However for safety reasons it is recommended that the maximum hot water temperature is limited to 65 C INSTALLATION REQUIREMENTS Read the section Important Safety Information first Installation must be carried out in accordance with these instructions and must be conducted by designated qualified and competent personnel 1 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 2 Before commencing make sure that the installation conditions comply with the information given in section Specifications 3 Layout and sizing of pipework must be such that when other services are used pressures at the BSM inlets are maintained approximately equal and do not fall below the recommended minimum 4 Do not install the product in a position in which service access is restricted Do not fit any form of flow control in the shower outlet only Mira recommended fittings should be used Do not use excessive force when making connections Do not install the produc
30. ulators fitted incorrectly Airlock or partial blockage in pipework Make sure that the inlet isolating valves are open Hot or cold supply failure Make sure that the hot and cold supplies are available to the mixer Refer to symptom 2 above Make sure that the inlet valves are open Hot supply temperature fluctuation Supply pressures fluctuating Thermal Cartridge defective Inlet Filters Blocked Indicates incorrect maximum temperature setting refer section Commissioning Refer to symptom 4 above Symptom Cause Rectification 6 Flowratetoolowor a Too low Insufficient supply pressures too high Too low Refer to symptom 2 Too high Supply pressure too high Flow regulators fitted incorrectly 7 Dripping from bath Remove the flow divertor cartridge and check the or shower outlet cartridge inlet seal Replace if damaged If leak persists replace the flow divertor cartridge 8 Temperature too hot a Refer to symptom 1 or too cold b Refer to symptom 4 19 MAINTENANCE Mira products are precision engineered to provide satisfactory performance provided that they are installed and operated in accordance with the recommendations contained in this guide The Mira Excel BSM is designed for the minimum of maintenance in normal use If a malfunction occurs with either the temperature control cartridge or the flow divertor cartridge then this will necessitate a complete cartridge replacement
31. w using the 3 mm hexagonal wrench supplied and remove the temperature control hub Unscrew the 2 flow divertor lever retaining screws using the 3 mm hexagonal wrench supplied and remove the flow divertor lever and slip ring Disconnect the shower hose and remove the shower outlet nipple using the quad key supplied or a 12 mm hexagonal wrench Carefully push back and lift off the cover shroud and the seal Unscrew the flow control gear securing screw using a 3 mm hexagonal wrench supplied and remove the flow control gear and the red temperature setting tool Turn the temperature control gear through 180 clockwise and lift off Unscrew the idler gear securing screw using a 5 mm hexagonal wrench supplied and remove the idler gear and bush Remove the 4 clamp plate screws using a 5 mm hexagonal key supplied and remove the clamp plate Refit and secure the flow control gear upside down to assist removal Pull out the flow cartridge Remove the flow control gear from the cartridge and discard the cartridge Fit the new flow cartridge and profile seal Note The large tab must be towards the back of the BSM body Refit the clamp plate and idler gear bush and tighten the 4 clamp plate screws Line up the temperature control gear with the cartridge spacer and rotate anti clockwise through 180 refer to illustrations Temperature Setting Tool in section Cleaning and Re assembly of the Thermostatic Cartridge Refit the flow co
32. y pressures exceed 5 bar maintained An expansion vessel MUST be fitted and regularly maintained if any form of backflow prevention device is fitted e g non return valve PRV This will ensure that excess expansion or pulse pressures do not damage the product or the plumbing system The expansion vessel may already be fitted externally or internally within the thermal store check with thermal store manufacturer rp Sy COLD HOT 10 Unvented mains pressure supplies The BSM can be installed with an unvented stored hot water cylinder Only a competent person as defined by Part G of Schedule 1 of the Building Regulations may fit this type of system For packages with no cold water take off after the appliance reducing valve it will be necessary to fit an additional drop tight pressure reducing valve when the mains pressure is over 5 bar The drop tight pressure reducing valve must be set at the same value as the unvented package pressure reducing valve Note An expansion vessel MUST be fitted and regularly maintained if any form of backflow prevention device is fitted e g non return valve PRV This will ensure that excess expansion or pulse pressures do not damage the product or the plumbing system Safety devices not S shown for clarity Se t OS JL TA 1 l 1 l l 1 COLD HOT Expansion Vesse
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