Installation & User Guide SHOWER PUMP
Contents
1. AN Pipe connections to the pump should be supported to reduce strain and must be correctly aligned prior to installing the pump to reduce the risk of scolding 1 10 It is recommended that inlet outlet isolation valves are fitted within close proximity of the pump to permit isolation for servicing See Figures 2 amp 3 1 11 A Ensure no fluid drips onto the pump motor orits electrical connections 1 12 1 13 1 14 during installation venting or operation as when the pump is energised this may create a risk of electric shock Joint and assemble the adapter to the pump inlet Do not overtighten the adapter Install a short length of 15mm pipe at the pump outlet tighten the compression joint Push the flow switch onto this pipe end marked Inlet first ensuring that the flow switch is fitted vertically See to Figure 7 Place the pump on its resilient pad and complete the inlet and outlet pipe work 11 Key to symbols used in the system layouts Isolation Valve Check Valve Mixing Valve Pressure Switch Float Type Automatic Air Vent Bottle Valve f Shower Handset DHW Domestic Hot Water Pressure Accumulator Ball Valve vm Fixed Shower Head Warning Pipe LE overflow Loc 1 OM E 787 Cistern i Cold feed pue ia feed to Minimum to cylinder mixing valve 1 5m with EM A 4 simultaneous A other hot water E services 302. in a horizontal position with the outlet connection vertically upwards The operation ofthe flow switch will be impaired in any other position Operational difficulties may be experienced if plumbing layouts shown in Figures 4 and 5 are used ATTENTION The pump and pipes must not be installed against wood plastic or any other material which may be effected by heat from the pump The hotfeed from the cylinder must be as illustrated Side entry cylinder bosses are not recommended A drop in cylinder water level could expose a top entry immersion element Air in water gathers at the edge of the cylinder and in the centre during the heating process before travelling up the vent ATTENTION Water pumps can develop leaks and should therefore not be situated where seepage may go undetected or cause damage The pump must be installed such that it is accessible for servicing or removal When servicing ordisconnecting small amounts of water may drain fromthe unitand pipework Pump performance is maximised by the use of 22 mm pipe especially on the inlet pipework and where long outlet pipe runs are used Pipe jointing should be via P T F E tape orfluid sealant Do notuse hemp and paste which may affect the operation of the flow switch and plastic internal components ATTENTION Care should be taken when using soldering fluxes Protect the pump from damage whilst making soldered connections as some fluxes cause damage to plastic components
3. spares requiring exposure to mains voltage can only be sent to competent persons Service Our Service Force is available to provide a quality service at a reasonable cost You will have the assurance of a Mira trained engineer agent genuine Mira spares and a 12 month guarantee on the repair Payment should be made directly to the Service Engineer Agent using Visa Access or a cheque supported by a banker s card To contact us England Scotland amp Wales Mira Showers Customer Services Telephone 0870 241 0888 8 30am to 5pm Working days 4 30pm Fri 8 30 am to 12 30pm Saturday E mail Mira technical 9 mirashowers com Fax 01242282595 By Post Cromwell Road Cheltenham Gloucester GL52 5EP For Customers in Northern Ireland WmHLeech amp Son Ltd Telephone 028 9044 9257 Mon to Fri 9 am 5pm Fax 028 9044 9234 24 hours Post Maryland Industrial Estate Ballygowan Road Moneyreagh Co Down BT236BL For Customers in Republic of Ireland Modern Plant Ltd Telephone Dublin 01 4591344 Mon to Fri 9am to 5pm Fax Dublin 01 4592329 24 hours Post Otter House Naas Road Clondalkin Dublin 22 mira A SHOWERS BS EN ISO 9001 1994 Reg No FM 14648 Kohler Mira Limited November 2004
4. 6 Ensure that the cable gland nut is tightened to provide strain relief 14 2 3 A Cross bond the inlet and outlet pipework using a minimum 6mm cable and bonding clamps Referto Figure 7 Plastic pipes do not require bonding a Blue Brown Terminal Block Blue Blue Brown Brown E Brown Blue dm N Gland Nut Cable to Flow LU d Switch FS Mains Cable Optional Connection Unit Momentary Fused 5A Action Switch Wiring Diagram Figure 6 15 16 Outlet Pipe Bonding Details Figure 7 Section 6 Commissioning 1 Commissioning 121 A Proceed with caution due to the risk from hot water and scolding 1 2 A Ensure that the pump is electrically isolated 1 3 Ensure thatall the isolating valves are fully open and that the pump chamber is fully flooded A THIS PUMP MUST NOT BE RUN DRY IF IT IS SEAL AND BEARING DAMAGE MAY OCCUR 1 4 Openthe shower fully Water should flow from the outlet under the pressure of gravity Leave the outlet open for a short period of time to allow the air to be expelled from the system Turn off the shower and check the pump shower and the interconnecting pipework for leaks 1 5 If no water comes out of the outlet then the system may be airlocked or the shower may be fitted in a negative head situation Refer to Section 7 Maintenance Fault Diagnosis or Section 2 Opera
5. N Instructions which if ignored could cause damage or impair the function of the pump are highlighted by the word ATTENTION 2 Caution 2 1 2 2 2 3 Read all of these instructions and retain this manual for later use Pass on this manual in the event of change of ownership of the installation site The plumbing installation must comply with the requirements of UK Water Regulations Bye laws Scotland Building Regulations or any particular regulations and practices specified by the local water company or water undertakers The installation should be carried out by a plumber or contractor who is registered or is a member of an association such as 2 3 1 Institute of Plumbing IOP throughout the UK 2 3 2 National Association of Plumbing Heating and Mechanical Services Contractors NAPH amp MSC England and Wales 2 3 3 Scottish and Northern Ireland Plumbing Employers Federation SNIPEF Scotland and Northern Ireland AN WARNING THIS APPLIANCE MUST BE EARTHED 2 4 WARNING THIS APPLIANCE MUST BE EARTHED MAKE SURE SUPPLEMENTARY BONDING COMPLIES WITH THE REQUIREMENTS FOR ELECTRICAL INSTALLATIONS orany particular regulations or practices specified by the local electricity supply company The pump is supplied with a pre wired flow switch and mains cable and must be permanently connected to the fixed wiring of the mains system Warning Do not use a plug and socket 2 5 Theinclusion of a Residual Cu
6. curs momentarily If pump operation occurs momentarily particularly when other hot water services that are not on the pumped circuit are used or an on off pulsating operation occurs when the shower is turned off check If any 1 4 1 3 1 There are no air locks in the pump outlet pipe work These will cause water movementthrough the pump by compression ofthe air Reroute the pipe work or fit float type automatic air vents at air collection points Referto Figure 3 1 3 2 Fit check valve onto pump outlet after flow switch to prevent water surging in the pipe work This may increase the pressure required to start the pump Refer to Figure 3 Flow starts adequately and drops after a short time Check 1 4 1 Sufficient stored cold water 1 4 2 Pipe work that is prone to air locking should be rerouted to be self venting when not in use Float type Automatic Air Vents are in general NOT advisable for pump inlet pipe work as a negative pump pressure will allow air to be sucked in through Automatic Air Vents The pressure at the desired vent position can approximately be determined using the Mira green book A Guide to Domestic Pumped Shower Systems to check whether it remains positive under dynamic conditions 19 Appendix 1 Spare Parts 226 08 Resilient Pad 872 06 Flow Switch 20 21 22 23 Customer Service Guarantee of Quality Mira Showers guarantee products against any defect of ma
7. e use of hot water above 60 C may lead to cavitation air bubbles which will increase pump noise and reduce the service life of the product A temperature of 60 C is considered sufficient to meet all normal requirements and will minimize the deposition of scale in hard water areas Delivery Rates See Pump Performance Graph Terminal fittings and associated pipe work will reduce this figure 0 6 0 5 0 4 0 3 0 2 0 1 0 5 10 15 20 25 Flow Rate l min Mira Enhance Shower Pump Performance Graph ATTENTION Inlet Pressure Maximum inlet static pressure 3 bar 30m head 5 Connections 5 1 Plumbing Inlet compression fitting to fit 22mm copper pipe Outlet compression fitting to fit 15mm copper pipe FS4 Flow switch push fit fitting to fit 15mm copper pipe rd Pack Contents Checklist 1 Mira Enhance Shower Pump M Tick the appropriate boxes to familiarize yourself with the part names and to confirm that the parts are included Mira Enhance Shower Pump Ol Flow Switch L Resilient Pad L 2 Documentation 1 x Installation Operation and Maintenance Guide OO 1 x Customer Support Brochure Section Installation 1 Plumbing WARNING ATTENTION DO NOT FIT INLET CHECK VALVES INLET CHECK VALVES CAN SERIOUSLY DAMAGE THE PUMP 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 10 ATTENTION The pump must be mounted
8. ideration should be made to the pump position as any noise generated may be amplified by installation conditions such as reverberant panels etc The pump motor is air cooled and itis important that the flow of air around the motor is notimpeded The pump should be sited in a frost free area and inlet outlet pipework layouts which can create significant airlocks are best avoided ATTENTION Pipework on the outlet side of the pump that could be prone to airlocks can be fitted with a float type automatic air vent bottle vent at the highest point as shown in Figure 3 This will ensure that air released in the hot water during the pumping and heating process can be vented The stored hot and cold water volumes should be sufficient for the required duty Typical minimum flow rates are 10 l min for a pulsating handset or overhead shower The manufacturer s data for the outlet fittings should be consulted 2 Operation The pump would normally start automatically when the mixing valve is setto open The contacts of the flow switch at the pump outlet close when the flow rate in the outlet pipe is more than 1 4 l min When this occurs the electrical circuit to the motor is completed and the pump operates The opposite action occurs when the mixing valve is set to shut A vertical distance of 300 mm between the water discharge point through the shower outlet and the base of the cistern would typically achieve the flow rate required However long pipe ru
9. mild e enhance SHOWER PUMP Installation amp User Guide THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER Contents Section Page gate Important Safety Information 3 P RER Introduction DES CiP HON Me neat ene A 5 CDS ANON TCCC 5 3 Specifications VV GIGI Re n T Buc spcd M T Power Supplies a ee 7 Water Standards usaste 8 CONNECtIONS rra 8 4 Pack Contents Checklist Mira Enhance Shower Pump 9 DOLUMERTANON p 9 Boss Installation Plumb uranio E O 10 Electrical MN 14 6 Commissioning COMMISSION asan 17 go Maintenance Fa lt DIAGNOSIS sacra alce 18 Appendices lisa Parts List Spare Parts aaa 20 Guarantee Customer Care Policy and How to contact us Back cover Section Important Safety Information 1 WARNING 1 1 1 2 Products manufactured by Mira are precision engineered and should give continuous superior and safe performance provided they are installed operated and maintained in accordance with the instructions and recommendations given in this manual Installation must be carried out by qualified personnel only Failure to comply with these safety instructions will cause riskto people and equipment and may invalidate the guarantee Identified hazards are highlighted by the following symbols Danger from general causes AN Danger from electrical causes A
10. ns or restrictive terminal fittings will increase the gravity head required to produce the required flow 5 To overcome an initial low flow rate in the outlet pipe it is possible to bypass the function of the flow switch by the addition of a momentary action switch connected in parallel with the flow switch Refer to Figure 6 When the mixing valve is set to on and the momentary action switch operated the pump will run The pump will then maintain the necessary flow rate in the outlet pipe and will continue to operate until the mixing valve is set to off Suitable momentary action switches are as follows MK4408P wall mounted seal switch Crabtree CT2147 ceiling mounted pull cord switch MK3190RCWH1 5A 3 E RED Specifications 1 Weight Mira Enhance Shower Pump 2 7 kg Pump only 2 Dimensions 12 offset JD m P i All dimensions are nominal and in millimetres External Dimensions Figure 1 3 Power Supplies 3 1 Single Phase 230V 50Hz fused supply through a 5A fused connection unit or equivalent refer to Figure 6 3 2 Absorbed Power Approximately 85W during normal working conditions 4 Water Standards 4 1 4 2 4 3 4 4 Total Head Pressure bar at Pump This product complies with all relevant directives for CE marking Maximum Hot Water Temperature 80 C It is recommended that stored water temperatures should never exceed 65 C Th
11. ould this not resolve the difficulty simply contact our Customer Services who will give every assistance and if necessary arrange for our service engineer to visit Iflaterthe performance of your shower declines consultthis manual to see whether simple home maintenanceis required Please call our Customer Services to talk the difficulty through request service under guarantee if applicable or take advantage of our comprehensive After Sales service After Sales Service Our Customer Services Team is comprehensively trained to provide every assistance you may need help and advice spare parts or a service visit As part of our quality and training programme calls may berecorded or monitored Mira Showers Kohler Mira Ltd Cromwell Road Cheltenham GL52 5EP Kohler Mira Limited notice P2615 9 Mira is a registered trade mark of The company reserves the right to alter product specifications without Part No 6479504 Spare Parts We maintain an extensive stock of spares and aim to havefunctional parts available forten years fromthe date of final manufacture of the product Spares can be purchased from approved stockists or merchants locations on request or directfrom Customer Services Spares direct will normally be despatched within two working days Payment can be made by Visa or Access at the time of ordering Should payment by cheque be preferred a proforma invoice will be sent Note Inthe interests of safety
12. rrent Device RCD Earth trip with a trip current of 30mA is recommended This may already be part of the consumer unit 2 7 Anyone who may have difficulty understanding or operating the controls of any shower should be attended whilst showering Particular consideration should be givento the young the elderly the infirm oranyone inexperienced inthe correct operation of the controls Standards and Approvals 1 The Mira Enhance complies with all the relevant directives for CE marking Section D 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 safe for future reference 1 Description The Mira Enhance single impeller centrifugal pump is designed to receive a single gravity feed from a mixing valve and provide a pressurized supply to a fixed shower head or shower handset Refer to Figures 2 and 3 The pump is not suitable for an installation in the system layouts shown in Figures 4 and 5 The pump is more effective when pushing water along a pipe rather than pulling Thus the pump is best positioned as close to the hot water or blend water source as possible to reduce cavitation air bubbles in the pipes The greater the static inlet water pressure on the pump the better it will operate Thus positioning a pump at high level is not advantageous and may result in inferior performance Due cons
13. terials or workmanship for one year from the date of purchase 2 years for Mira Select and 3 years for Mira Excel ranges To validate the guarantee please return your completed registration card Within the guarantee period we will resolve defects free of charge by repairing or replacing parts or modules as we may choose To be free of charge service work must only be undertaken by Mira Showers or our approved agents in Northern Ireland and Republic of Ireland Service under this guarantee does not affect the expiry date The guarantee on any exchanged parts or product ends when the normal product guarantee period expires Not covered by this guarantee Damage or defects arising from incorrect installation improper use or lack of maintenance including build up of limescale Damage or defects if the product is taken apart repaired or modified by any person not authorised by Mira Showers or our approved agents This guarantee is in addition to your statutory and other legal rights Before using your shower Please take the time to read and understand the operating and safety instructions detailed in this manual What to do if something goes wrong If when you first use your shower it doesn t function correctly first contact your installer to check that installation and commissioning are satisfactory and in accordance with the instructions in this manual We are on hand to offer you or your installer any advice you may need Sh
14. tion 1 6 Switch on the power to the pump 1 7 Openthe shower valve andcheck thatthe pump has operated automatically 1 8 The flow rate must be at least 1 4 l min for the flow switch to operate 1 9 Ifthe pump is not operating correctly repeat the commissioning procedure 17 Section 7 Maintenance 1 Fault Diagnosis Read the section Important Safety Information first Providing the shower pump has been correctly installed andis operated in accordance with the instructions contained in this guide difficulties should not arise maintenance is required then it must be carried out by a competent tradesperson for whom the fault diagnosis and maintenance instructions are provided Before replacing any parts ensure that the underlying cause of the malfunction has been resolved 1 1 1 2 1 3 18 Pump does not start 1 1 1 Check adequate gravity flow 1 4 I m A Isolate power and water and check 1 1 2 Supply fuse mains supply and the fused connection unit 1 1 3 Free operation of the flow switch fitted externally in the outlet vertical pipe of the pump with the Inlet at the bottom Pump does not stop after the water flow has ceased A Isolate power and water and check 1 2 1 Check that the flow switch is fitted correctly Refer to Section 5 Installation 1 2 2 Free movement of magnetic float within flow switch 1 2 3 Any external switching connected operating correctly Pump operation oc
15. to 60 Other hot water services System Layout Figure 2 12 Cistern QH Optional Check Valve gt Other hot water services System Layout with High Level Pipework Figure 3 Other hot water services Unsuitable System Layout Figure 4 13 i gt e ED se Pump I O O J Other hot water services Unsuitable System Layout Figure 5 2 Electrical AN WARNING THIS APPLIANCE MUST BE EARTHED All electrical installations must comply with current IEE regulations and be undertaken by a qualified person 2 1 The power to the pump should be through a double pole switched fused connection unit or equivalent with a 5A fuse Refer to Figure 6 the contact separation in each pole should be atleast 3mm A cable with a minimum core area of 0 75mm should be used from the fuse to the pump 2 2 Removethe terminal cover single screw and connectthe electrical supply and only if necessary connect the momentary action switch to the appropriate terminals Refer to Section 2 Operation L Brown N Blue E Yellow Green FS Flow Switch and External Switching Refer to Figure
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