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ELECTRIC SHOWER
Installation & User Guide
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER
1
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Contents Introduction .......................................................................................................... 3 Important Safety Information ............................................................................. 4 Pack Contents Checklist ...................................................................................... 7 Specifications ...................................................................................................... 8 Dimensions ................
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Introduction Thank you for purchasing a quality Mira Zest 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
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Important Safety Information WARNING! 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
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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 or inside the appliance. 4. The electrical installation must comply with the “Requirements for Electrical Installations” (commonly referred to as the IEE Wiring Regulations), or any particular regulations and practices, specified by the local electricity
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9. 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. 6
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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 7
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Specifications Dimensions 205mm 103mm 53mm 8 310mm
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Wiring Diagram 9
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Plumbing 1. Minimum maintained inlet pressure for satisfactory operation: 0.7 bar 2. Maximum static inlet pressure: 10 bar 3. Minimum static pressure to keep the flow valve closed: 0.5 bar Electrical 1. The appliance requires a 40 Amp fuse. 2 2. The terminal block will not accept cable larger than 10 mm . 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. 8.5 kW 7.5 kW
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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 up to a maximum static inlet pressure of 10 bar. 2. 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 ciste
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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 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 can lead to a build up of static pressure. 11. To av
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15. A hose retaining ring is supplied to prevent the handset from dropping below the spillover level of the bath or shower, which could lead to contamination from back-siphonage. Hose Retaining Ring 25 mm minimum Spillover Level 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 the hose retaining ring will not provide a suitable solution. In these instances an outlet double
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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. 2. The appliance must be earthed by connecting the supply-cable earth conductor to the earth terminal. Supp
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6. A separate, permanently connected supply must be taken from the consumer unit to 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. 7. DO NOT twist the individual cable cores of the live and neutral conductors, as this will prevent them from entering the terminal block. 8. DO NOT exert strain on the terminal block. 9. DO NOT turn-on the
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Installation WARNING! Isolate the electrical and water supplies before installing the shower. 1. Decide on a suitable position for the appliance (minimum distance of 200mm 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 2. Put the installation template on the wall and mark the positions of the top tw
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8. 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. 9. Rotate the inlet connector to suit the direction of the incoming water Inlet Connector supply. 10. The case has thinned sections that Thinned Section can be removed to allow entry of the supply p
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12. Secure the shower to the wall loosely through the top two fixing holes, using the supplied screws. 13. Mark the position of the bottom fixing hole. 14. Remove the shower from the wall. Drill the bottom fixing hole and insert the supplied wall plug. 15. Thoroughly flush the mains-fed cold water supply pipe. The supply must be clean and free from debris BEFORE connecting the appliance. 16. Replace the shower on the wall and secure through the three fixing holes, Screws using the supplied scre
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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 T (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 termina
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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. Screws Cover Spindle Screw Service Tunnel 20
