Page 2 - Contents
2 Contents Introduction .......................................................................................................... 3 Important Safety Information ............................................................................. 4 Pack Contents Checklist .....................................
Page 3 - Introduction; Products covered by this guide:; section before contacting; Recommended Usage
3 Introduction Thank you for purchasing a quality Mira Zest Shower. To enjoy the full potential of yournew shower, please take time to read this guide thoroughly, and keep it handy for futurereference. Mira Zest electric showers have separate controls for power selection and fortemperature/flow adju...
Page 4 - Important Safety Information; MUST
4 Important Safety Information WARNING! 1. Products manufactured by us are safe and risk-free, provided that they areinstalled, used and maintained in good working order, in accordance with ourinstructions and recommendations. 2. THIS APPLIANCE MUST BE EARTHED. 3. In accordance with ‘The Plugs and S...
Page 5 - Read all of these instructions and retain this guide for later use.; the young
5 CAUTION! 1. Read all of these instructions and retain this guide for later use. 2. Pass on this guide in the event of change of ownership of the installation site. 3. Follow all warnings, cautions and instructions contained in this guide, and on orinside the appliance. 4. The electrical installati...
Page 7 - Pack Contents Checklist; confirm that the parts are included.; Documentation; x Installation & User Guide
7 Pack Contents Checklist Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included. 3 x Wall Plugs 3 x Fixing Screws 1 x Mira Zest Electric Shower Documentation 1 x Installation & User Guide 1 x Installation Template 1 x Guarantee Brochure
Page 8 - Specifications; Dimensions
Page 9 - Wiring Diagram
Page 11 - Installation Requirements; Plumbing; minimum maintained inlet pressure of 0.7 bar; up to a; maximum static; use
11 Installation Requirements Plumbing 1. The Mira Zest 7.5 kW and 8.5 kW electric showers are designed to operate witha minimum maintained inlet pressure of 0.7 bar up to a maximum static inlet pressure of 10 bar . 2. The appliance is normally connected to the cold water mains-fed supply.However, th...
Page 12 - The; Do
12 9. 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. We recommend that a non-restrictive (free-flowing) isolating valve is f...
Page 13 - must; be fitted. This will increase
13 15. A hose retaining ring is supplied toprevent the handset from droppingbelow the spillover level of the bathor shower, which could lead tocontamination from back-siphonage. The supplied hose retaining ring should meet the majority of user requirementsfor shower installations with flexible outle...
Page 14 - Electrical; must be earthed
14 Electrical 1. In a domestic installation, the rating of the electricity supply company fuse andthe consumer unit must be adequate for the additional demand. This is a high-power appliance, and it is essential to contact your electricity supply companyto ensure that the supply is adequate for the ...
Page 15 - this will prevent them from entering the terminal block.; DO NOT; exert strain on the terminal block.; DO NOT
15 6. A separate, permanently connected supply must be taken from the consumerunit to the appliance through a double-pole switch, which has a minimum 3 mmcontact separation. The switch can be a ceiling mounted pull-cord type withinthe shower room, or a wall mounted switch in an adjacent room. 7. DO ...
Page 16 - Installation; Remove the installation template and drill the; top two; fixing holes. Insert the; Thoroughly flush the supply pipe.; On the shower, turn both knobs to the full anti-clockwise position.
16 Installation WARNING! Isolate the electrical and water supplies before installing the shower. 1. 2. 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 electricalcable to reach the connection poi...
Page 17 - Do not; use an incoming supply
17 8. Determine the direction of theincoming water supply: falling(entering the shower from the top),or rising (entering the shower fromthe bottom). Do not use an incoming supply entering the shower directly fromthe back. Add an elbow to the supplypipe and connect it as a rising orfalling supply. 9....
Page 18 - Secure the shower to the wall; loosely; through the top two fixing
18 12. Secure the shower to the wall loosely through the top two fixing holes, using the supplied screws. 13. Mark the position of the bottomfixing hole. 14. Remove the shower from the wall.Drill the bottom fixing hole and insertthe supplied wall plug. 15. Thoroughly flush the mains-fed cold water s...
Page 21 - Commissioning
21 Commissioning If you are unsure how electric showers work, please read through the Operation section before continuing. 1. Make sure that the TOP control knob is in the 'STOP' position and that the electrical supply has been isolated. 2. Turn the BOTTOM control knob fully anticlockwise to the ful...
Page 22 - Operation; Advice to Users; different; temperature setting.
22 Operation Advice to Users 1. Electric showers work by taking in cold water and passing it over the heatingelements contained in the tank inside the shower. 2. The showering temperature is adjusted by turning the temperature controlknob, which varies the flow of cold water across the elements. The...
Page 23 - Operation Instructions
23 Operation Instructions Note! Read the Important Safety Information section first. WARNING! The spray plate holes must be kept clear. The spray plate should be regularly removed and cleaned in descalent. Lack of regular spray plate cleaning willlead to poor performance and cause early failure of t...
Page 24 - To turn the shower off; Turn the power knob to; Stop; A small amount of water may continue to; Switch off; the electrical supply at the double pole
24 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. 2. Switch off the electrical supply at the double pole switch.
Page 25 - Fault Diagnosis; Customer Fault Diagnosis
25 Fault Diagnosis Customer Fault Diagnosis The troubleshooting information below gives details on what you can do as a user if youencounter problems with the shower. If this information does not fix the problem,contact the installer for advice. Read the Important Safety Information section first an...
Page 26 - section of the handset manual.
26 Malfunction Cause Remedy No water or verylow flow rate. No hot water fromshower, with theknobs in anyposition. Other water outlets arebeing used duringshowering, causing thewater pressure to dropbelow the minimumrequired. The water pressure isbelow the minimumrequired. Showertemperaturecycles bet...
Page 27 - Installer Fault Diagnosis
27 Installer Fault Diagnosis The troubleshooting information below gives details on solutions to problems with theshower, for installers. Before replacing any parts, ensure that the underlying causeof the malfunction has been resolved. Read the Important Safety Information section first and refer to...
Page 28 - The pilot valve is faulty.; Maintenance; section of the
28 Malfunction Cause Remedy No water or very lowflow rate. The handset sprayplate isblocked. The incoming watersupply stop valves, or theappliance isolating valve,is closed. The hose or handset isblocked. Insufficient water supplypressure. The heater tank isexcessively scaled. The pilot valve is fau...
Page 30 - Cleaning the Inlet Filter; Remove the service tunnel from the shower.; There are no user-serviceable components beneath the cover of the; Cleaning
30 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 thecover. 2. Remove the service tunnel from the shower. Maintenance Any maintenance must be carried out by a qualified tr...
Page 31 - Remove the inlet filter.
31 4. Remove the inlet filter. 5. Clean the inlet filter with a stiffbrush. If necessary, use a kettledescalent in accordance with themanufacturer's instructions. 6. Refit the components in reverseorder. 3. Use a suitable spanner to removethe filter from the inlet connectorassembly. Hold a wrench ac...
Page 32 - Relief Valve Assembly - Resetting; electricity connections are exposed when the cover is removed.
32 Relief Valve Assembly - Resetting WARNING! Isolate the electrical and water supplies before removing the cover. Mains electricity connections are exposed when the cover is removed. 1. Remove the three screws that hold the cover, remove the cover. Note! The rubber ball is ejected to reduce the dam...
Page 36 - Heater Tank - Removal and Installation
36 Heater Tank - Removal and Installation WARNING! Isolate the electrical and water supplies before removing the cover. Mains electricity connections are exposed when the cover is removed. 1. Remove the three cover retaining screws, the cover and the service tunnel. 2. Remove the hose from the outle...
Page 38 - Do not press printed disc
38 7. Lift out the flow regulator assembly,switch assembly and the heater tankfrom the case. 8. Carefully separate the flow regulatorassembly from the switch assembly,inlet connector and heater tank bygently pulling apart. 9. Make a note of the positions of all thewiring on top of the heater tank. 1...
Page 39 - Thermal Trip - Removal and Installation
39 2. Make a note of the positions of the wiring on top of the heater tank. 3. Remove the screw that holds the green earth wire to the thermal trip. 4. Ease the thermal trip away from the heater tank. 7. Refit the components in reverse order. Make sure that the electrical wires areinstalled in the c...
Page 40 - Spare Parts; Spare Parts List
40 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 439.87 Terminal Block Assembly 439.88 Seal Pack (components identified ‘B...
Page 41 - Spare Parts Diagram
41 Spare Parts Diagram 439.87 439.95 439.81 439.90 439.99 439.91 439.92 A 439.79 439.77 A B B B B 406.27 439.75 C C C C
Page 42 - Notes
Page 44 - Customer Service
44 P4340 (J96E) © Kohler Mira Limited, November 2003 Mira ShowersKohler Mira LtdCromwell Road,Cheltenham GL52 5EP. Mira is a registered trade mark. The company reserves the right to alter product specifications without notice. w w w . m i r a s h o w e r s . c o m Customer Service Mira Showers guara...
