Installation and User Guide ELECTRIC SHOWER MIRA
Contents
1. These instructions are to be left with the user CONTENTS MATHOCUCTIONN 3 Important Safety 4 tiaina aiarra 6 sted ccnneceveessasdancecdanesneedeeneesye 7 7 Wining Diagrami ds 7 A E 8 neat 8 Standards and 8 Flow Rate 1 8 Installation Requirements ennenen 9 PIUMBING sais 9 A 14 MAS 12 COMMITS 15 OPO 16 8 0515 18 MAN CO 22 tdi AETA 22 Cleaning the I2. When the shower is first turned on or the temperature setting is changed there will be a slight delay before the water temperature changes 16 Operation Instructions To turn the shower on 1 2 Switch on the electrical supply at the double pole switch Turn the power knob to High Wait 15 20 seconds for warm water to reach the handset For electrical economy set the power knob to Medium This setting will provide sufficient power when the supply water temperature is warmer such as in the summer For an unheated shower set the power knob to Low To set the shower temperature 1 Set the shower temperature by rotating the temperature knob as necessary Turn the knob clockwise for hotter water and anticlockwise for cooler water Wait 10 15 seconds for the adjusted temperature to reach the handset Note It is normal for the flow rate to change when the temperature is changed Note If the water temperature cycles between hot and cold the temperature is set too high This is causing the thermal switch to turn off the heating element to reduce the water temperature Turn the temperature knob anticlockwise to reduce the water temperature To turn the shower off 1 Turn the power knob to Stop Note A small amount of water may continue to flow from the handset for a few moments Switch off the electrical supply at the double pole switch 17 Sto Sto Sto Sto Low Medium High
3. Y Low Medium High S Low Medium p gt i igh 2 Low Medium FAULT DIAGNOSIS The troubleshooting information tabled below gives you details on probable causes and remedies should difficulties be encountered whilst the shower is in operation Warning There are no user serviceable components beneath the cover of the appliance ONLY A COMPETENT TRADESPERSON SHOULD REMOVE THE FRONT COVER Shower is too The incoming water is Turn the power knob to hot during the summer Shower is too hot Turning the temperature knob does not affect the water temperature The water continues to flow when the double pole switch is turned off No water or very low flow rate warmer in the summer so the shower power setting is too high The handset sprayplate is blocked The handset sprayplate is blocked Broken diaphragm The handset sprayplate is blocked The incoming water supply stop valves or the appliance isolating valve is closed The hose or handset is blocked Medium and adjust the temperature knob until the desired temperature is reached Regularly clean the handset sprayplate Refer to the Maintenance section of the handset manual Remove and clean the handset sprayplate Refer to the Maintenance section of the handset manual If the fault persists contact the shower installer Contact your installer to replace the
4. rise further this shows that the full power setting is operating correctly Set the shower temperature by rotating the BOTTOM knob as necessary Turn the knob clockwise for hotter water and anticlockwise for cooler water Note When the temperature is changed the flow rate will change When the required temperature is reached turn to the STOP position to stop the flow Water may continue to flow from the handset for a few moments during shut down as water is purged from the tank Isolate the power at the double pole switch Asmall amount of water may be retained in the shower fitting after the shower control has been turned off This may drain over a few minutes Note A slight hissing sound may be heard from the appliance during operation High mains water pressure and high shower temperatures will effect the tone This is quite normal when the shower is in use 15 OPERATION Advice to Users Note Read the Important Safety Information section first Warning The showerhead must be de scaled regularly to make sure it does not become blocked See the shower fitting Installation and User Guide for more information 1 2 Electric showers work by taking in cold water and passing it over the heating elements contained in the tank inside the shower The showering temperature is adjusted by turning the temperature control knob which varies the flow of cold water across the elements The slower the rate of flow the warmer the wate
5. a stiff brush If necessary use a kettle descalent in accordance with the manufacturer s instructions Inlet Filter 6 Refit the components in reverse order Inlet Connector Assembly 22 SPARE PARTS Spare Parts List 406 27 Filter 439 75 Inlet Connector Assembly 439 76 Clamp Bracket Pack components identified A 439 77 Flow Reg Assembly 7 5 8 5 kW 439 79 Switch Assembly Rotary 439 81 Cover Assembly Zest 439 88 Seal Pack components identified B 439 89 Screw Pack components identified C 439 90 Thermal Trip Assembly 439 91 Heater Tank Assembly 7 5 kW 1798 054 Heater Tank Assembly 8 5 kW 439 95 Service Tunnel 1539 349 Terminal Block Assembly 23 Spare Parts Diagram 43991 7 5kW 1798 054 8 5kW 24 ACCESSORIES Genuine Mira accessories can be purchased direct from Customers Services our contact details can be found on the back cover of this guide or from approved stockists or merchants Logic Showerhead Holder White 2 1605 149 White Chrome 2 1605 150 An alternative to the traditional slide bar Often a useful addition when positioned for the smaller members of the family Mira Standard Grab Bars 300 mm 2 1605 070 450 mm 2 1605 071 600 mm 2 1605 072 Premium grade highly polished stainless steel grab bars Note Must be installed onto a solid wall Shower Seat White 2 1536 128 White Chrome 2 1536 129
6. the supplied screws Connect the inlet supply pipe to the inlet connector using a 1 2 BSP nipple with compression nuts and olives shown or a push fit connector 13 Service Tunnel Inlet Connector Compression s Nut amp Olive DNE 1 2 BSP Nipple Olive Compression Nut Inlet Supply Pipe ees Thinned Secti on AW 18 Bring the electrical cables into the case 19 Strip back sufficient of the outer cable insulation to enable routing to terminal block 20 Fit an earth sleeve to the earth wire 21 Loosen the screws in the terminal block and insert the bare wires into the clamps L Live Brown wire E Earth Green sleeved wire N Neutral Blue wire Note Do not twist the cores of the wires or strain the cables to make them reach the terminal block 22 Connect the conductors firmly into the terminal block Make sure that the bare cores of each conductor are securely trapped within each conductor clamp 23 If necessary fit an earth bonding clamp to the supply pipe and ensure that the bonding complies with the relevant regulations in force at the time of installation 24 Replace the service tunnel 25 Replace the cover If the cover does not fit easily rotate the knobs slightly so that they fit onto the spindles Do not force the cover 26 Tighten the three cover screws 14 Terminal Block
7. therefore 4 l min INSTALLATION REQUIREMENTS Plumbing 1 The Mira Zest 7 5 kW and 8 5 kW electric showers are designed to operate with a minimum maintained inlet pressure of 0 7 bar 70 kPa up to a maximum static inlet pressure of 10 bar 1000 kPa The appliance is normally connected to the cold water mains fed supply However the water supply can be taken from a cold water storage cistern provided there is a minimum maintained inlet head of water of 7 metres the vertical distance from the base of the cold water storage cistern to the shower fitting handset To reduce pressure losses and fluctuations the cistern fed water supply must be independent from other supply draw offs and should avoid long horizontal pipe runs and use swept bends rather than 90 elbows For further advice please refer to the back cover of this guide for Mira Showers contact telephone and fax numbers The appliance is suitable for installation within the shower area It is fitted with a pressure relief device and must be positioned over a water catchment area with the controls at a convenient height for the user The shower fitting should be positioned so that it discharges down the centre line of the bath or across the opening of a shower cubicle and must be directed away from the appliance The appliance is fitted with an inlet connector assembly that is designed to accept plumbing supplies from the top or bottom The water supply can be fed with 15 mm pi
8. A 1 Electrical Cables Outlet Connector A Cold Water Supply Pipe Inlet Connector Screws Service Tunnel COMMISSIONING If you are unsure how electric showers work please read through the Operation section before continuing 1 10 11 Make sure that the TOP control knob is in the STOP position and that the electrical supply has been isolated Turn the BOTTOM control knob fully anticlockwise to the full cold position Turn the water supply fully on at the isolating valve check that water is not leaking from the bottom of the case Switch on the electrical supply at the double pole switch Turn the TOP control knob to the LOW position Check that water flows freely from the shower within a few seconds If not refer to the Maintenance section The water from the handset will be at full force and at a cool temperature Turn the BOTTOM knob slowly clockwise As the knob is rotated the flow will be reduced and the temperature will remain cool this shows that the flow regulator assembly is operating correctly Return the knob anticlockwise to full cold position Turn the TOP knob to the MEDIUM position The temperature of the water should rise slightly Allow a few seconds for the warm water to reach the handset this shows that the MEDIUM power setting is operating correctly Turn the TOP knob to the HIGH position The temperature of the water will
9. For use in or out of the showering area Folds up when not in use Maximum User Weight 127 kg 20 stone Note Must be installed onto a solid wall Premium Shower Seat White Chrome 2 1731 001 Grey Chrome 2 1731 002 Stylish slim line and robust shower seat for use in or outside of the shower area Folds up when not in use Maximum User Weight 150 kg 23 5 stone Note Must be installed onto a solid wall 25 Outlet Double Check Valve DCV H Chrome 1 0 110 55 1 An outlet double check valve designed to prevent the back flow or back siphonage of potentially contaminated water through shower controls which are fitted with a flexible shower hose as part of the outlet shower fitting NOTES 26 NOTES 27 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 maint
10. SPERSON No hot water from shower with the knobs in any position Insufficient water supply pressure Failure of the pressure switch microswitch or thermal switch An internal wiring connection has failed One of the heater tank elements has failed Switch assembly diaphragm fault water dripping from the unit Contact the local water authority Check the continuity of the switches using a suitable continuity measuring device Replace the switches as necessary Check the integrity of the internal wiring Replace the heater tank Replace switch assembly Continued Malfunction Shower temperature cycles between hot and cold Turning the temperature knob does not affect the water temperature No water or very low flow rate The temperature is set too high This is causing the thermal switch to turn off the heating element to reduce the water temperature The flow regulator is faulty The handset sprayplate is blocked The handset sprayplate is blocked The incoming water supply stop valves or the appliance isolating valve is closed The hose or handset is blocked Insufficient water supply pressure The heater tank is excessively scaled The pilot valve is faulty The inlet filter is blocked The power is not turned on at the double pole switch The fuse is blown or the MCB RCD has been tripped indicating a possible electrical fault for examp
11. ained 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 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 work correctly refer to this manual for fault diagnosis and check that it is installed and commissio
12. components beneath the cover of the appliance Only a competent tradesperson should remove the cover If any of the following conditions occur isolate the electricity and water supplies and refer to To contact us on the back page of this guide e The cover is not correctly fitted and water has entered the appliance case e The case is damaged e The appliance begins to make an odd noise smell or smoke e The appliance shows signs of a distinct change in performance indicating a need for maintenance e The appliance is frozen Isolate the electrical and water supply before removing the cover Mains connections are exposed when the cover is removed Refer to the wiring diagram before making any electrical connections Make sure all electrical connections are tight to prevent overheating This product is not suitable for areas with very high humidity i e steam rooms Please consult your installer Caution 1 2 3 Read all of these instructions and 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 and on or inside the appliance The electrical installation must comply with BS 7671 commonly referred to as the IEE Wiring Regulations and all relevant building regulations or any particular regulation or practice specified by the local electricity supply company This is a high power unit
13. e the flow regulator assembly Replace the flow regulator assembly Contact the local water authority Check the static water pressure Note that the static pressure may fall below minimum requirement when other appliances are drawing water for example the dishwasher or washing machine Any maintenance must be carried out by a qualified tradesperson following the instructions provided Before replacing any parts ensure that the underlying cause of the malfunction has been resolved Warning There are no user serviceable components beneath the cover of the appliance Only a competent tradesperson should remove the cover Cleaning Many household and industrial cleaners contain abrasives and chemical substances that can damage the finish of your shower Only clean the shower and fittings with a mild washing up detergent or soap solution and then wipe them dry with a soft cloth Screws Cleaning the Inlet Filter Warning Isolate the electrical and water supplies before removing the cover 1 Remove the three screws that hold the cover on the shower and remove the cover 2 Remove the service tunnel from the shower 3 Use a suitable spanner to remove the filter from the inlet connector assembly Hold a wrench across the flats of the inlet connector assembly to prevent damage to the connector whilst removing the strainer 4 Remove the inlet filter 5 Clean the inlet filter with
14. flow valve assembly Clean the handset sprayplate Refer to the Maintenance section of the handset manual Open the stop isolating valve completely Clear the blockage or replace the hose or handset Continued Malfunction No hot water from shower with the knobs in any position Temperature cycles between hot and cold The power is off at the double pole switch The fuse is blown or the MCB RCD has been tripped indicating a possible electrical fault Other water outlets are being used during showering causing the water pressure to drop below the minimum required The water pressure is below the minimum required Failure of pressure switch micro switch or thermal switch The temperature is set too high This is causing the thermal switch to turn off the heating element to reduce the water temperature Switch on the power at the double pole switch Renew the fuse or reset the MCB RCD If the fault persists contact the shower installer Make sure the other water outlets such as the washing machine or dishwasher are not in use during showering Make sure that the incoming water supply stop and the isolating valve are completely open If the fault persists contact the shower installer Contact installer to replace faulty parts Turn the temperature knob anticlockwise to reduce the water temperature ALL OF THE FOLLOWING REMEDIES MUST ONLY BE PERFORMED BY A COMPETENT TRADE
15. it is essential to contact your electricity supply company to ensure that the electricity supply is adequate for the purpose The plumbing installation must comply with all national or local water regulations and all relevant building regulations or any particular regulation or practice specified by the local water supply company This appliance is not thermostatic and can produce scalding temperatures if not operated in accordance with the instructions given in this manual This shower is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the shower by a person responsible for their safety Children should be supervised to ensure that they do not play with the shower When this appliance has reached the end of its serviceable life it should be disposed of in 8 safe manner in accordance with current local authority recycling or waste disposal policy PACK CONTENTS Vv Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included O 3 x Wall Plugs LL O 3 x Fixing Screws O 1 x Mira Zest Electric Shower Documentation O 1 x Installation and User Guide O 1 x Installation Template O 1 x Guarantee Brochure Dimensions SPECIFICATIONS 205 mm Wiring Diagra
16. le heater tank element failure Turn the temperature knob anticlockwise to reduce the water temperature DO NOT TAMPER with the thermal switch Replace the flow regulator Remove and clean the handset sprayplate Refer to the shower fittings User Guide If the fault persists contact Customer Services Regularly clean the handset sprayplate Refer to the Maintenance section of the handset manual Open the stop isolating valve completely Clear the blockage or replace the hose or handset Contact the local water authority Replace the heater tank Replace the flow regulator assembly Clean the inlet filter See the Maintenance Cleaning the Inlet Filter section Switch on the power at the double pole switch Renew the fuse or reset the MCB RCD If the fault persists contact Customer Services Replace the heater tank Continued Water leaks from the bottom of the case near the outlet and there is no flow from the handset The water cannot be turned off The pressure relief valve in the tank has been triggered the shower has a pressure relief valve assembly that works to reduce the damage if the outlet is blocked or the unit is frozen When the relief valve operates a small rubber ball is ejected The pilot valve is faulty Broken diaphragm The supply pressure is below the minimum requirement 21 Resolve the blocked outlet and replace the tank assembly Replac
17. m BROWN THERMAL CUTOUT DUAL DISC 310 mm LO BLUE ON OFF SOLENOID VALVE PRESSURE POWER BROWN X SELECTOR SWITCH BROWN RED BROWN RED ELEMENTS E O GREEN TANK CONNECT ION BLUE BLUE Plumbing 1 Minimum maintained inlet pressure for satisfactory operation 0 7 bar 70 kPa 2 Maximum static inlet pressure 10 bar 1000 kPa 3 Minimum static pressure to keep the flow valve closed 0 5 bar 50 kPa Electrical 1 The appliance requires a 40 Amp fuse 2 The terminal block will accept cable up to 16 mm2 Standards and Approvals 1 This Mira Zest shower complies with all the relevant directives for CE marking Flow Rate Graph 1 These curves are for the specified outputs at 240 V 2 All appliance heating elements have a manufacturing tolerance Flow rates may be above or below those shown on the flow rate graph 3 The left hand axis shows temperature rise Temperature rise Showering temperature Supply water temperature 55 oO 50 L 45 B 40 35 5 30 95 8 5 kW 2 20 7 5 kW 5 5 55 10 2 3 4 5 6 7 8 9 10 11 12 13 Flow Rate l min Example For the Mira Zest 8 5 kW on full power setting with an incoming water supply at 10 C and a showering temperature at 42 C the temperature rise is 32 C The flow rate is
18. n lead to a build up of static pressure To avoid damage to the case when soldered fittings are used pre solder the pipework and fittings before connecting them to the inlet stub Supply pipework MUST be flushed to clear debris before connecting the appliance The appliance is fitted with a 1 2 BSP male outlet thread to accept a Mira Zest shower hose When installed in very hard water areas above 200 ppm temporary hardness your installer may advise the installation of a water treatment device to reduce the effects of limescale formation Appliance malfunction due to excessive limescale formation is not covered by the manufacturer s guarantee Your local water company will be able to advise on the hardness of water in your area A hose retaining ring is supplied to prevent the handset from dropping fb below the spillover level of the bath or shower which could lead to contamination from back siphonage The supplied hose retaining ring should meet the majority of user requirements for shower installations 6 with flexible outlet fittings However there will be occasions when the hose retaining ring will not provide a suitable solution In these instances an outlet double checkvalve must be 25 mm fitted This will increase the required IR minimum supply pressure typically by 0 1 bar 10 kPa X J spillover Double checkvalves fitted in the reve inlet supply to the appliance cause a pressure build up which could e
19. ned in accordance with our instructions If this does not resolve the issue contact us for help and advice Extended Guarantees A selection of protection plans are available that enable you to cover repair bills excludes Eire Ring 01922 471763 for more details D 8 Helpdesk Service Ring our Customer Services Team for product advice to purchase spare parts or accessories or to set up service visit You can contact us via phone or e mail details below Please provide your model name power rating if applicable and date of purchase Mira Showers Website www mirashowers co uk Visit our website to register your guarantee download user guides diagnose faults purchase our full range of accessories and popular spares or request a service visit Spares and Accessories We hold the largest stocks of genuine Mira spares and accessories Contact us for a price or visit our website to purchase items from our accessory range and popular spares Service Repairs No one knows our products better than our nationwide team of Service Technicians We can carry out service or repair work to your product both during and after the guarantee period Ask about our fixed price service repairs To Contact Us UK 0844 571 5000 Fax 01 242 282595 E mail Visit www mirashowers co uk contactus Mira Customer Services Dept Cromwell S lt Road Cheltenham Gloucestershire GL52 may OEP To Con
20. nlet auveetstieeenrn diet 22 Spare PAM 23 Spare Pans 23 Spare Parts 24 550 65 25 26 Cust mer 56 6 28 INTRODUCTION Thank you for purchasing a quality Mira Zest Electric Shower To enjoy the full potential of your new shower please take time to read this guide thoroughly and keep it handy for future reference Mira Zest electric showers have separate controls for power selection and for temperature flow adjustment A unique flow regulator stabilises any temperature changes caused by water pressure fluctuations which can result from taps being turned on or off or toilets being flushed Products covered by this guide Mira Zest 7 5 A7 5 kW 240 V AC 6 9 kW 230 V AC heater Available in a white finish Mira Zest 8 5 A8 5 kW 240 V AC 7 8 kW 230 V AC heater Available in a white finish Recommended Usage Domestic Light Commercial Heavy Commercial SN Healthcare If you experience any difficulty with the installation or operation of your new shower co
21. ntrol then 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 IMPORTANT SAFETY INFORMATION Warning 1 10 11 12 13 14 15 Products manufactured by us are safe and risk free provided that they are installed used and maintained in good working order in accordance with our instructions and recommendations THIS APPLIANCE MUST BE EARTHED This appliance is intended to be permanently connected to the fixed wiring of the mains system and must be provided with means for disconnection that is incorporated into the fixed wiring in accordance with the relevant local wiring regulations DO NOT twist the individual cable cores of the live and neutral conductors as this will prevent them from entering the terminal block Make sure that any pipework that could become frozen is properly insulated DO NOT switch the shower on if there is a possibility that the water in the shower is frozen The shower must not be fitted where it may be exposed to freezing conditions DO NOT connect the outlet of the shower to any tap control valve trigger handset or showerhead other than those specified for use with this shower Only Kohler Mira recommended accessories should be used If water leaks from the pressure relief valve maintenance will be required before the appliance can be safely used There are no user serviceable
22. o the appliance through a double pole switch which has a minimum 3 mm contact separation The switch can be a ceiling mounted pull cord type within the shower room or a wall mounted switch in an adjacent room DO NOT twist the individual cable cores of the live and neutral conductors as this will prevent them from entering the terminal block DO NOT exert strain on the terminal e block DO NOT turn on the electrical Plumbing and Electrical Schematic supply until the plumbing has been completed 11 INSTALLATION Warning Isolate the electrical and water supplies before installing the shower 1 Decide on a suitable position for the appliance minimum distance of 200 mm from the ceiling to allow for cover fit and removal The position of the appliance 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 This is to prevent backsiphonage Put the installation template on the wall and mark the positions of the top two fixing holes Ensure that there are sufficient lengths of supply pipe and electrical cable to reach the connection points as shown on the template Remove the installation template and drill the top two fixing holes Insert the supplied wall plugs Caution Do not drill into cables or pipes in the wall Thoroughly flush the supply pipe Screws On the shower turn both knobs
23. pe or 10 mm microbore pipe suitably adapted into the inlet connector assembly If 10 mm microbore is used then an allowance for increased pressure loss must be made to ensure that the minimum maintained inlet pressure is achieved Do not fit the appliance to the wall and tile up to the case The appliance must be fitted onto a finished flat and even wall surface Otherwise difficulty may be encountered when fitting the cover and subsequent operation of the unit could be impaired small pillars moulded on to the back of the case allow air circulation Use only the inlet connector assembly supplied with the appliance Do not use any other types of fitting Refrain from applying excessive force when making any connections Always provide mechanical support when making the plumbing connections This appliance is not designed to be plumbed directly from the rear For a rear entry supply add an elbow to the supply pipe and connect it as a rising or falling supply Do not install the appliance in a position where it may become frozen The shower unit must not be fitted where it may be exposed to freezing conditions The shower unit must not be used if you suspect it may be frozen 10 11 12 19 14 15 16 We recommend that a non restrictive free flowing isolating valve is fitted in the cold water supply pipe to allow the complete maintenance of the appliance Do not use a valve with a loose washer plate jumper as this ca
24. r and vice versa The holes in the spray plate of the shower handset should always be kept clean to maintain a consistent flow and stable shower temperatures The appliance is designed to stabilise temperature changes caused by water pressure fluctuations These fluctuations can be caused by taps being turned on or off or toilets being flushed Under such conditions average shower temperatures will be held within a 6 C range provided that the minimum required pressure is maintained Seasonal changes in the temperature of the incoming cold water supply and or fluctuations in mains electrical voltage will effect the temperature of the water Adjust the temperature knob as necessary to compensate The shower requires a minimum maintained running pressure of 0 7 bar 70 kPa to operate At pressures above 0 7 bar 70 kPa the shower will minimise the temperature fluctuations caused when other draw off points are used If the flow rate drops below an acceptable level the heating element inside the shower will turn off resulting in a cold shower If the water temperature reaches an unsafe level the thermal switch assembly turns off the heating elements As the water temperature falls the elements will be turned on The switch will cycle on off on if the flow rate is not increased and the temperature of the shower reduced Check the shower temperature before entering the shower The previous user may have selected a different temperature setting
25. tact Us Eire Only 01 531 9337 E mail CustomerServiceEire A mirashowers com Mira is a registered trade mark of Kohler Mira Limited The company reserves the right to alter C product specifications without notice FM 14648 SHOWERS J 1057732 W2 E Kohler Mira Limited May 2013
26. tothe Shower full anti clockwise position Remove the three screws that hold the cover on the shower and remove the cover Remove the service tunnel from the shower Determine the direction of the incoming water supply falling entering the shower from the top or rising entering the shower from the bottom Do not use an incoming supply entering the shower directly from the back Add an elbow to the supply pipe and connect it as a rising or falling supply Service Tunnel Rotate the inlet connector to suit the direction of the incoming water supply Inlet Connector 12 10 11 12 19 14 15 16 17 The case has thinned sections that can be removed to allow entry of the supply pipe and electrical cables Remove the top thinned section of the case for a falling supply or remove the bottom thinned section of the service tunnel for a rising supply Do not remove any case if the electrical cables enter from the back Secure the shower to the wall loosely through the top two fixing holes using the supplied screws Mark the position of the bottom fixing hole Remove the shower from the wall Drill the bottom fixing hole and insert the supplied wall plug Thoroughly flush the mains fed cold water supply pipe Caution The supply must be clean and free from debris BEFORE connecting the appliance Replace the shower on the wall and secure through the three fixing holes using
27. xceed the maximum static inlet pressure for the appliance Hose Retaining Ring Avoid layouts where the shower hose will be sharply kinked This may reduce the life of the hose 10 Electrical 1 In a domestic installation the rating of the electricity supply company fuse and the consumer unit must be adequate for the additional demand This is a high power appliance and it is essential to contact your electricity supply company to ensure that the supply is adequate for the appliance Voltage drop due to local heavy demand will reduce the performance of the shower The appliance must be earthed by connecting the supply cable earth conductor to the earth terminal Supplementary bonding Within the bathroom or shower room all accessible conductive parts of electrical equipment and extraneous conductive parts that are likely to introduce earth potential must be electrically bonded to earth using a minimum cable size of 4 0 mm if the cable is not mechanically protected 2 5 mm if mechanically protected The minimum cable size cross sectional area must conform to BS7671 To obtain full advantage of the power provided by this unit use the shortest possible cable route from the consumer unit to the shower A 30 mA residual current device RCD should be fitted This may be part of the consumer unit or a separate unit A separate permanently connected supply must be taken from the consumer unit t
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