Mira Essentials 7.5 Instruction Manual

Electric shower

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ELECTRIC SHOWER

INSTRUCTION MANUAL

THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER

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Table of Contents

Summary of Contents for Mira Essentials 7.5

Page 1: Instruction Manual
ELECTRIC SHOWER INSTRUCTION MANUAL THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER back...
Page 2: Table Of Contents
Contents Page Introduction ..............3 Important Safety Information ............ 4 Pack Contents Checklist ............6 Dimensions ..............7 Wiring Diagram ..............8 Specifications ................9 Installation Requirements ............9 Installation ..............14 Commissioning ............... 18 Operation ................. 19 Maintenance ................23 Fault Diagnosis ...............
Page 3: Introduction
Appliances covered by this guide: Essentials 7.5 - A 7.5 kW 240 V AC (6.85 kW 230 V AC) heater with an adjustable spray handset with three different spray actions (start, force and soothe). Individual lights indicate, 'POWER', 'LOW PRESSURE' and 'OVERHEAT'.
Page 4: Important Safety Information
Section Important Safety Information WARNING! Products manufactured by us are safe and without risk provided they are installed, used and maintained in good working order in accordance with our instructions and recommendations. THIS APPLIANCE MUST BE EARTHED. 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.
Page 5 Caution! 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.
Page 6: Pack Contents Checklist
Pack Contents Checklist Tick the appropriate boxes to familiarize yourself with the part names and to confirm that the parts are included. 1. Essentials 7.5, 8.5 or 9.5 kW 1 x Essentials 7.5, 8.5 or 9.5 3 x Wall Plugs 3 x Fixing Screws 2.
Page 7: Dimensions
Section Dimensions 200 mm 83 mm 345 mm...
Page 8: Wiring Diagram
Wiring Diagram SWITCH ASSEMBLY NEON ASSEMBLY PURPLE (59A) ORANGE (56) (59A) BROWN (57) GREEN (60) BROWN (59A) BROWN (55) RED (57) BROWN (53) THERMAL SWITCH BLUE (59A) RED (54) BLUE (58) GREEN (61A) TERMINAL BLOCK BLUE HEATER TANK GREEN / YELLOW 220/240V AC ONLY BROWN...
Page 9: Specifications
Specifications Plumbing Minimum maintained inlet pressure 0.8 bar for satisfactory operation. Maximum static inlet pressure 10 bar. Minimum static pressure 0.5 bar to keep the flow valve closed. Electrical The appliance requires a 40 Amp fuse. The terminal block will not accept cable larger than 10 mm Standards and Approvals This Essentials shower complies with all the relevant directives for CE marking.
Page 10 The appliance is fitted with an inlet connector assembly that is designed to accept plumbing supplies from the top, bottom or back. The water supply can be fed with 15 mm pipe 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.
Page 11 However, there will be occasions when the hose retaining ring will not provide a suitable solution. In these instances an outlet double checkvalve, e.g. the Mira DCV-H, must be fitted. The inclusion of the Mira DCV-H will increase the required supply pressure typically by 0.1 bar.
Page 12 As a guide only, the following maximum permissible lengths are given for 6 mm cable protected by a 40A MCB type B and allowing for a 5 volt drop: Essentials 7.5 kW (240 V AC) at 240 V - 22 Metres Essentials 8.5 kW (240 V AC) at 240 V - 19 Metres Essentials 9.5 kW (240 V AC) at 240 V - 18 Metres...
Page 13 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 block. DO NOT turn-on the electrical supply until the plumbing has been completed. Plumbing and Electrical Schematic Diagram...
Page 14: Installation
Installation Essentials 7.5, 8.5 and 9.5 kW WARNING! Isolate the electrical and water supplies before proceeding with the installation of the appliance. Note! An installation template is supplied to help you install the Essentials shower. 1.1. Decide on a suitable position for the Essentials shower (minimum distance of 200 mm from the ceiling to allow for cover fit and removal).
Page 15 Hole For Cover Inlet Strainer Retaining Screws Inlet Connector Assembly Fixing Screw Inlet Connector Assembly Inlet Connector Assembly Configuration For A Rising Supply Inlet Connector Assembly Inlet Strainer Inlet Connector Assembly Configuration For A Falling Supply Make sure that the back inlet does not go into the wall Terminal Block directly.
Page 16 1.11. Install the mains-fed cold water supply pipe. 1.12. Make the connection to the mains-fed cold water supply pipe. 1.13. Bring the electrical supply cable into the case through one of the cable entry points (refer to Figure 3). 1.14. Strip back sufficient of the outer cable insulation to enable routing to terminal block.
Page 17 1.18. Turn both control 'D' spindles to the positions shown in Figure 4. Replace the cover ensuring the control knobs are positioned to fit onto the spindles allowing the cover to fit properly. Fit and tighten the three cover retaining screws. 1.19.
Page 18: Commissioning
Commissioning Commissioning If you are unsure how electric showers work, please read through the Operation section before continuing. Make sure that the left hand control knob is in the 'Stop' position. Turn the right hand control knob fully anticlockwise to the full cold position. Turn on the water supply fully at the isolating valve, check that water is not leaking from the bottom of the case.
Page 19: Operation
Operation Advice to Users Electric showers work by taking in cold water and passing it over the heating elements contained in the tank body of 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 water and vice versa.
Page 20 Select Shower Temperature By Rotating Clockwise As Necessary Essentials Controls Figure 6...
Page 21 Temperature rise versus flow rate for the Essentials range 9.5kW 8.5kW 7.5kW Flow rate (litres per minute) These curves are for the specified outputs at 240V. All appliance heating elements have a manufacturing tolerance. Thus flow rates can be above or below those indicated. The left-hand scale is temperature rise.
Page 22 Essentials 7.5, 8.5 and 9.5 Read the section 'Important Safety Information' first. 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 will lead to poor performance and cause early failure of the appliance.
Page 23: Maintenance
Maintenance General Read the section “Important Safety Information” first. Providing the shower has been correctly installed and is operated in accordance with the instructions contained in this guide, difficulties should not arise. If any maintenance is required then it must be carried out by a competent tradesperson the maintenance instructions are provided.
Page 24 Inlet Connector Assembly Inlet Strainer Service Tunnel Service Tunnel 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. Remove the cover. Note! The rubber ball is ejected to reduce the damage if the outlet is blocked or the appliance is frozen.The rubber ball will be trapped between the cover and the relief valve assembly and will fall out when the cover is removed.
Page 25: Fault Diagnosis
Fault Diagnosis 1. Customer Fault Diagnosis Read the section "Important Safety Information" first and refer to the appliance diagram. Left Knob: Power Selector Right Knob: Temperature WARNING! There are no user serviceable components beneath the cover of the appliance. Only a competent tradesperson should remove the cover. The trouble shooting information tabled below gives details on what you can do as a user should you encounter difficulties whilst operating the shower.
Page 26 Malfunction Cause Remedy Contact your installer to correct. The temperature knob is incorrectly fitted. Handset sprayplate blocked. Other outlets being used Remove and clean: Refer to whilst showering, causing Maintenance in the Instruction water pressure to drop Manual for the fittings. below minimum required Ensure other outlets e.g.
Page 27 2. Installer Fault Diagnosis: refer to appliance diagram and customer fault diagnosis Providing the shower has been correctly installed and is operated in accordance with the instructions contained in this guide, difficulties should not arise. If any maintenance is required then it must be carried out by a competent tradesperson for whom the fault diagnosis chart and maintenance instructions are provided.
Page 28 Malfunction Cause Remedy Appliance fails to Electrical supply isolated at Switch on. produce hot water double pole switch (the in any switch pullcord). position. Fuse 'blown' or MCB/RCD Correct the fault and tripped - indicating an renew the fuse or reset electrical fault e.g.
Page 29 Malfunction Cause Remedy No change in Insufficient water supply Contact local water temperature pressure. authority/undertaker. between 'LOW' Possible failure of the Use a suitable continuity and 'HIGH' presssure switch, measuring device to setting. microswitch or heater tank. check the continuity of the pressure switch, microswitch or heater tank and renew parts as...
Page 30: Spare Parts
The inclusion of the Mira DCV-H will increase the required supply pressure typically by 0.1 bar. Available as an optional accessory from your Caradon Plumbing Solutions stockist.
Page 31 2. Essentials Spare Parts Diagram 419 82 419 86 431 96 431 76 431 75 417 46 872 28 431 99 431 87 431 86 431 97 419 88 431 92 431 93 431 94 431 95 147 50 Important! Push-fit connectors must be assembled back to back onto terminals of microswitches.
Page 32 The company reserves the right to alter product specifications without notice. Caradon Mira Ltd Cromwell Road, www.essentials-showers.com Cheltenham GL52 5EP. email: essentials@caradon.com BS EN ISO 9001 : 1994 Reg. No. FM 14648 P3498/1 (J89 J, K, L) © Caradon Mira Limited,March 2000...

This manual is also suitable for:

Essentials 8.5 Essentials 9.5