MIRA AZORA ELECTRIC SHOWER Installation and User Guide These instructions are to be left with the user 1
CONTENTS Patents and Design Registration............................................................ 2 Introduction.............................................................................................. 3 Guarantee.................................................................................................. 3 Important Safety Information.................................................................. 4 Pack Contents Checklist......................................................................
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 Azora is a thermostatic electric shower with separate controls for power selection and temperature/flow adjustment. A unique thermostatic valve stabilises temperature changes caused by water pressure fluctuations. These can result from taps being turned on or off, or a toilet being flushed.
IMPORTANT SAFETY INFORMATION Installation must be carried out in accordance with these instructions, and must be conducted by designated, qualified and competent personnel. Warnings! Follow all warnings, cautions and instructions contained in this guide, and on or inside the appliance. 1 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. 2.
16. If pipework and/or electical cables enter the shower from the rear through a hole in the wall . Provision must be made to prevent water ingress back into the wall structure. 17. If the shower is dismantled during installation or servicing then upon completion the product must be inspected to ensure there are no leaks 18. DO NOT Position the handset to spray water directly on to the appliance. Eg.When cleaning shower control. Caution! 1. 2. 3. 4. 5. 6. 7.
(d) 8. If the appliance shows signs of a distinct change in performance, indicating a need for maintenance. (e) DO NOT operate this appliance if water leaks from this appliance. When this appliance 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 CHECKLIST Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included.
SPECIFICATIONS 1. Plumbing • • • • Minimum maintained inlet pressure 70 kPa (0.7 bar). 100 kPa (1.0 bar) recommended for satisfactory operation. Maximum static inlet pressure 1000 kPa (10 bar). Minimum static pressure 20 kPa (0.2 bar) to keep the inlet valve closed. 2. Electrical • • • The Mira Azora 9.8 kW requires a 45 Amp fuse. The terminal block will accept cable up to 16 mm2 . The Mira Azora is suitable for installation in Zone 1 and is rated IPX4. 3.
• Avoid layouts where the shower hose will be sharply kinked. This may reduce the life of the hose. • A Hose Retaining Ring is supplied to prevent the handset from dropping below the spill-over level of the bath or shower tray, which could lead to contamination from back-siphoning. The supplied Hose Retaining Ring should meet the majority of user requirements for shower installations with flexible outlet fittings. However, there will be occasions when it will not provide a suitable solution.
• The appliance is fitted with a brass inlet compression assembly for connecting to a 15 mm supply pipe from the top, bottom or back. Double checkvalves, if fitted in the inlet supply to the appliance, can cause a pressure build-up, which could exceed the maximum static inlet pressure and damage the appliance. 2. Electrical • In a domestic installation, the rating of the electricity supplier’s fuse and the consumer unit must be adequate for the additional demand.
Consumer Unit Double-pole Isolating Switch INSTALLATION Installation of Mira Azora Warning! Turn off the electrical and water supplies before proceeding with the installation of the Mira Azora. The electricity must be turned off at the mains and the appropriate circuit fuse removed, if applicable. Note! An installation template is supplied to help you install the Mira Azora. Cover Retaining Screw Remove the three cover retaining screws and the cover. Caution! Handle the glass cover assembly with care.
Determine the direction of the inlet water supply: top (falling), bottom (rising), or back inlet . Note! Make sure that the back inlet does not go directly back into the wall. Use a soldered elbow. Swivel the inlet connector assembly to suit. Remove the inlet blanking cap. Avoid trapping the green earth bonding wire. Before fitting the Cover, make sure that the appropriate cutouts have been removed to suit the supply entering the product. Thoroughly flush the mains-fed cold water supply pipe.
Feed cable into Case. Fit Earth sleeve (not supplied) and then strip insulation. Do not twist cable cores. Important! Make sure that the inlet earth wire is routed as shown. Failure to do so may cause product malfunction. L = BROWN E = GREEN/YELLOW Firmly connect the conductors. Do not exert strain on the terminal block. N = BLUE Cover Retaining Screw Refit the Cover, making sure it is correctly located. Do not overtighten screws. Caution! Handle the glass cover assembly with care.
Holes For Cover Retaining Screws Fixing Screw Terminal Block Heater Tank Electrical Supply Cable Inlet Connector Assembly Cold Water Supply Pipe (Bottom Entry) 13
COMMISSIONING Before carrying out the commissioning procedure install the Shower Fittings, refer to the Shower Fittings Installation and User Guide. If you are unsure how an electric shower works, please read through the section “User Instructions” before continuing. 1. 2. 3. Electrical supply is turned off at the mains. Turn control to full cold. Turn the water supply fully on. 4. 5. Check for water leaks. Set control to ‘I’. 7. 8. 6. Switch on electrical supply. 9.
10. 11. 12. + _ 0 - 10 Secs Turn control to full cold. Set control to ‘II’. 13. 14. The temperature will rise slightly. + _ 5 - 10 Secs Set control to ‘III’. The temperature will rise further. 15. 16. Adjust temperature as required. Flow rate will adjust automatically. Press STOP. 17. 18. 19. 0 - 5 Secs Isolate power. The shower will purge water from its tank for a few seconds. Residual water may drain over a few minutes.
USER INSTRUCTIONS How Your Electric Shower Works Heated water is produced by adjusting the flow of cold water passed through a heater tank. + LD CO _ The shower has three heater settings. + _ + _ The warmer the shower, the lower the flow rate and vice versa.
Thermostatic (Temperature-Stable) The shower's top priority is to keep the desired water temperature constant. Electric showers with thermostatic control are able to keep a stable temperature across the range from hot to cold, whilst also dealing with fluctuations in electrical and water supplies. As a result, there is a temperature limit the shower cannot go beyond. For safety, this temperature is factory set and cannot be adjusted to make the shower hotter or colder.
Using your Shower Read the section “Important Safety Information” first. 1. 2. Switch on electrical supply. Press the ‘Start/Stop’ button. 3. 4. + _ Set to desired position. Check water temperature before entering shower. 5. + _ Allow 10 - 15 seconds for any temperature adjustments to reach the handset. 6. 7. 8. P r e s s S TO P b u t t o n . Shower will continue to run for a few seconds before stopping. Isolate power. Residual water may drain over a few minutes.
The Effect of Seasonal Changes * ** + _ For a cold shower select I. For a summer warm shower select II. For a winter warm shower select III. During extremes of mains water supply temperature, adjust heater setting to obtain a better showering temperature. The Effect of Other Water Devices Example of how shower temperature stabilises due to pressure changes. + _ ± 2°C Water inlet pressure fluctuations due to other draw offs (e.g. flushing toilet).
FAULT DIAGNOSIS The trouble shooting information tabled below gives 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! Symptom Start/ Stop Light Heater Setting I/II/III Probable Cause Possible Remedy Appliance Fails to operate OFF Any Electrical supply isolated at double pole switch.
Symptom Start/ Stop Light Heater Setting I/II/III Low or no flow. ON Any Water supply pipework or inlet Flush supply pipe. Clean inlet filter restricted by a blockage or filter. partial blockage. ON Any Insufficient water sup p l y Contact local water company. pressure/flow for operation. Supply pressure must be a minimum of 0.7 bar. Note: If other appliances are operating, pressure may drop below 0.7 bar. ON Any Other outlets (e.g.
Symptom Start/ Stop Light Heater Setting I/II/III Probable Cause Water will not turn off. ON Any Inlet valve, solenoid, or start/ stop switch faulty. ON Any Supply pressure below 0.2 Contact local water company. bar. Check mains water static pressure. ON II/III Insufficient water supply. Contact local water company. ON II/III Possible failure of the microswitch or thermal switch. Check the continuity of the microswitch or heater tank and replace parts as necessary.
Inlet Filter - Cleaning/Renewing Read the section “Important Safety Information” first Cover Retaining Screw Make sure that the electrical supply is turned off at the mains and that the water supply is fully turned off. Remove the three screws and the cover. Caution! Handle the glass cover assembly with care. Cover Hold a wrench across the flats of the metal connector. Unscrew the filter using another wrench as shown. Clean or renew the Filter as necessary.
DIMENSIONS 77 mm 100 mm 233 mm 367 mm 24
SPARE PARTS 405.58 406.27 416.38 416.41 416.48 416.51 872.01 872.28 1563.519 1563.533 1563.534 1563.537 1563.538 1563.539 1563.540 1563.551 1634.015 1634.026 1623.009 1634.118 1634.119 1634.120 1634.121 1634.122 1634.123 1634.124 Inlet Connector Assembly Inlet Filter (with ‘O’ seal fitted) Clamp Bracket (Inlet) Thermal Switch Latching Switch Solenoid Coil Microswitch N/O - 2 pin Microswitch C/O - 3 pin Terminal Block Assembly Thermostatic Valve/Heater Tank 9.
Mira Azora Spare Parts Diagram B A A A B 416.41 1563.519 B 1563.539 872.01 B 1563.533 A 1563.538 A A 872.28 406.27 A A 1563.540 416.48 416.51 1563.507 B 405.58 416.38 A 1563.534 1563.537 A 1634.015 1634.009 1634.118 1634.119 1634.120 1634.121 1634.122 1634.123 1634.
WIRING DIAGRAM Thermal Cutout Disc L RED BROWN BROWN BROWN BROWN Start/Stop L.E.D.
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.
