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Resumen del manual
7 Specifications ...................................................................................................... 8 Dimensions ....................................................................................................... 8 Wiring Diagram.................................................................................................. 9 Installation Requirements ................................................................................. 11 Installation ......................................................................................................... 16 Commissioning .................................................................................................. 21 Operation ........................................................................................................... 22 Fault Diagnosis .................................................................................................. 25 Customer Fault Diagnosis ............................................................................... 25 Installer Fault Diagnosis .................................................................................. 27 Maintenance ...................................................................................................... 30 Cleaning the Inlet Filter ................................................................................... 30 Relief Valve Assembly and Resetting .............................................................. 32 Flow Regulator Assembly/Switch Assembly Removal & Installation ............... 33 Heater Tank-Removal and Installation ............................................................. 36 Thermal Trip-Removal and Installation ............................................................. 39 Spare Parts ........................................................................................................ 40 Guarantee, Customer Care policy, and How to contact us ............................ 44 2 Introduction Introduction 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 – An 7.5 kW 240 V AC (6.9 kW 230 V AC) heater. Available in a white finish. Mira Zest 8.5 – An 8.5 kW 240 V AC (7.8 kW 230 V AC) heater. Available in a white finish. Recommended Usage Domestic . Light Commercial . Heavy Commercial . Healthcare . If you experience any difficulty with the installation or operation of your new shower control, please refer to the Fault Diagnosis section before contacting Kohler Mira. Our telephone and fax numbers can be found on the back cover of this guide. 3 Important Safety Information Important Safety Information 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. THIS APPLIANCE MUST BE EARTHED. 3. In accordance with ‘The Plugs and Sockets etc. (Safety) Regulations’ in force at the time of installation, this appliance is intended to be permanently connected to the fixed electrical wiring of the mains system. 4. DO NOT twist the individual cable cores of the live and neutral conductors, as this will prevent them from entering the terminal block. 5. Make sure that any pipework that could become frozen is properly insulated. 6. DO NOT operate this appliance if it is frozen. Allow the appliance to thaw before using. The shower unit must not be fitted where it may be exposed to freezing conditions. 7. DO NOT fit any form of outlet flow control as the outlet acts as a vent for the tank body. Only Mira Showers recommended outlet fittings should be used. 8. If water leaks from the pressure relief valve, maintenance will be required before the appliance can be safely used. 9. There are no user-serviceable components beneath the cover of the appliance. Only a competent tradesperson should remove the cover. 10. 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. • The cover is not correctly fitted and water has entered the appliance case. • The case is damaged. • The appliance begins to make an odd noise, smell or smoke. • The appliance shows signs of a distinct change in performance, indicating a need for maintenance. • The appliance is frozen. 11. Isolate the electrical and water supply before removing the cover. 12. Mains connections are exposed when the cover is removed. 13. Refer to the wiring diagram before making any electrical connections. 14. Ensure all electrical connections are tight, to prevent overheating. 15. This product is not suitable for areas with very high humidity (i.e steam rooms). Please consult your installer. 4 CAUTION! CAUTION! . Re...