Thermostatic

THERMOSTATIC

POWER SHOWER

Installation and User Guide

These instructions are to be left with the user

1 1088849-W2-I

IMPORTANT SAFETY INFORMATION

WARNING - This shower can deliver scalding temperatures, cause fire, electric shock or other personal injury if not operated, or maintained in accordance with the instructions, warnings and cautions contained in this guide and on the appliance.

Please read the important safety information and the operation section of this guide before using the shower. Failure to follow the instructions provided with this shower will invalidate the guarantee.

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY:

1.

Children younger than 3 years should not use this shower. Children

3 years to under 8 years should only use this shower under continuous supervision. Children aged 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience or knowledge can use the shower if they are given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

2. Children shall not be allowed to play with the shower.

3. Cleaning and user maintenance shall not be made by children without supervision.

4. The outlet must not be connected to any tap or fitting other than those specified.

5. The showerhead must be descaled regularly. Any blockage of the showerhead or hose can cause damage to the shower.

6. Warning!

DO NOT switch on if there is a possibility that the water in the heater is frozen.

7. The shower must be provided with means for local disconnection from the supply mains having a contact separation in all poles that provide full disconnection under overvoltage category III, the instructions state that means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

8. Installation of the shower must be carried out in accordance with these instructions by qualified, competent personnel. Read all instructions before installing the shower.

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9. DO NOT switch the shower on if water starts leaking from the shower case. Isolate the electrical supply to the shower immediately.

10. DO NOT switch the shower on if the case appears to be damaged or incorrectly fitted. Isolate the electrical supply to the shower immediately.

11. DO NOT increase the power setting or adjust the temperature control rapidly while using the shower.

12. DO NOT switch the shower off and back on while standing in the water flow.

13. DO NOT change the handset model. Fit only shower heads recommended by Mira and do no fit any additional device to restrict the water outlet flow.

14. When adjusting the handset mode, point handset away from body and make sure that the water temperature has stabilised before continuing to shower.

15. Use caution when altering the water temperature, always check the temperature before continuing to shower.

16. Switch the shower off at the electrical isolating switch when not in use. This is recommended with all electrical appliances.

17. Installation of the shower must be carried out in accordance with these instructions by qualified, competent personnel. Read all instructions before installing the shower.

18. Isolate the electrical and water supplies before commencing installation. The electricity must be isolated at the consumer unit and the appropriate circuit fuse removed, if applicable. Mains connections are exposed when the cover is removed.

19. DO NOT install the shower in areas with high humidity and temperature (i.e. Steam rooms and saunas).

20. DO NOT install the shower where it may be exposed to freezing conditions. Ensure that any pipework that could become frozen is properly insulated.

21. DO NOT connect the outlet of the shower to any tap, control valve, trigger operated handset or showerhead other than those specified for use with this shower as the outlet acts as a vent for the tank body. Only Kohler Mira recommended accessories should be used.

3 1088849-W2-I

22. DO NOT perform any unspecified modifications, or drill or cut holes in the product other than instructed by this guide. When servicing only use genuine Kohler Mira replacement parts.

23. Always check the water temperature is safe before entering the shower.

24. The water supplies to this product must be isolated if the product is not to be used for a long period of time. If the product or pipework is at risk of freezing during this period they should also be drained of water.

25. If the shower is dismantled during installation or servicing then, upon completion, an inspection must be made to ensure all electrical connections are tight and that there are no leaks.

26. This appliance is intended to be permanently connected to the water mains and not connected by a hose set.

27. Maximum Inlet Static Pressure is 100 kPa (1.0 bar).

Minimum Inlet Static Pressure is 0.8 kPa (0.008 bar).

DISPOSAL AND RECYCLING

End of Product Life

Electrical and electronic devices contain a range of materials that can be separated for recycling and used in new products.

This product should not be disposed of with your general household waste. When this product has reached the end of its serviceable life, please take it to a recognised WEEE

(Waste Electrical and Electronic Equipment) collection facility such as your local civic amenity site for recycling.

Your local authority or retailer will be able to advise you of your nearest recycling facility.

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INTRODUCTION

The Mira Vigour Thermostatic Power Shower is an all-in-one power shower with an integral mains voltage pump and separate controls for flow and temperature. It features a 15 mm dual entry push-fit manifold which supports various inlet supply configurations. The manifold includes inlet filters and check valves. The thermostatic mixer incorporates a wax capsule sensing unit.

Designed to be surface mounted, the Thermostatic Power Shower comes complete with an adjustable spray handset with three settings, flexible hose, adjustable slider, sliding rail, soap tray and bracket.

Patents

Patents

Patent Applications

GB: 2 340 210, 2 392 223, 2 392 224, 2 392 225

USA: 7 240 850

Euro: 03254070.0

Guarantee

For domestic installations, Mira Showers guarantee the Mira Vigour Thermostatic against any defect in materials or workmanship for a period of one year from the date of purchase (shower fittings for one year).

For terms and conditions refer to the back cover of this guide.

Recommended Usage

Application

Domestic

Power Shower



Power Shower with

Fittings



Light Commercial  

Heavy Commercial  

If you experience any difficulty with the installation or operation of your new Power

Shower, please refer to ‘Fault Diagnosis’ , before contacting Kohler Mira Ltd.

Our contact details can be found on the back cover of this guide.

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PACK CONTENTS

 Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included.



1 x Thermostatic Power Shower



4 x Case Inserts



1 x Flow Control Knob

 1 x Temperature

Indicator Trim

 1 x Installation and User Guide



1 x Guarantee Registration Document

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 1 x Temperature Control Knob



3 x Rubber Wall Plugs



3 x Fixing Screws



3 x Rubber Feet

6



1 x Push-Fit Release Tool

130

20

DIMENSIONS

28

210

310

88

20

All dimensions are nominal and in millimetres.

28

66 80

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SPECIFICATIONS

Electrical

Power supply - 230-240 V at 50 Hz, fused at 3 Amps, via a double pole fused switch

(not supplied) with a minimum contact separation of 3 mm for each contact.

Electrical Connections - Terminal block will accept cable up to 2.5 mm². Minimum cable size (cross-sectional area) required under normal installation conditions is 1 mm 2 .

Power Consumption - 150 W maximum.

Plumbing Connections

Inlet Connections - 2 x 15 mm Push-fit manifold.

Outlet Connection - 1/2” BSP male.

Operating Parameters

Cold water temperature - Maximum inlet temperature 30 °C

Hot water temperature - Maximum inlet temperature 65 °C

Warning! For safety reasons set the maximum temperature of the stored hot water to between 60 and 65 °C. Such temperatures are considered sufficient to meet all normal requirements and will minimise the deposition of scale in hard water areas.

Temperature Control - The maximum temperature stop is set to 41 °C. Depressing the override button overrides the maximum temperature and allows the showering temperature to be increased by 5 °C to approximately 46 °C.

The showering temperature will be maintained to within 1 °C of selected temperature with a 10 °C change in the hot or cold water supply.

If the cold supply fails the thermostatic mixer will shut down flow of water to seepage levels in approximately 2 seconds. The hot supply must be at least 12 °C above the blend temperature for shut down to seepage to occur.

The showering temperature will be maintained to within 1.5 °C of the selected showering temperature when the pressure between inlet and outlet is halved on either the hot or cold side.

Operating pressure

Minimum maintained pressure - 0.1 kPa (0.01 bar) or 100 mm head of water.

Maximum maintained pressure - 50 kPa (0.5 bar) .

Maximum static pressure - 100 kPa (1 bar) or 10 m head of water.

Duty Cycle - The Mira Vigour Thermostatic Power Shower pump is now continuously rated. The motor is fitted with a self-resetting thermal trip, designed to operate if motor temperatures become too high due to abnormally high supply voltages.

Noise - The acoustic noise from the pump motor has been reduced with the use of anti-vibration rubber feet and rubber wall plugs. The type of wall the appliance is fixed to will also affect the perceived noise level; solid walls will provide a quieter operation.

Maximum total head delivered – 1.5m

Approvals

The Mira Vigour Thermostatic Power Shower complies with UKCA & CE standards.

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INSTALLATION REQUIREMENTS

Gravity Fed system - The shower MUST be fed from a cold water cistern and hot water cylinder providing nominally equal pressure.

30° - 60°

10 m Maximum

80 mm Minimum

1.5 m Max.

Head

Hose Retaining

Ring

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INSTALLATION

General

1.

Do not take risks with plumbing or electrical equipment.

2.

Do not install the shower unit in a position where it could become frozen.

3.

Isolate electrical and water supplies before proceeding with the installation of the shower unit.

4. The shower unit must be fed from a cold water storage cistern and hot water cylinder with equal pressures. The shower unit must not be connected to a mains cold water supply, unvented high pressure systems or multi-point/combination gas water heaters.

5.

The installation must be carried out by a competent installer.

6. Decide on a suitable position for the shower unit (minimum distance of 200 mm from the ceiling to allow for the fitting and removal of the cover). The position of the appliance and the shower fittings must provide a minimum gap of 25 mm between the spillover level of the shower tray/bath and the handset, to prevent backsiphonage.

7.

Avoid layouts where the hose will be sharply kinked. This may reduce the life of the hose.

8. The shower unit is designed for surface mounting only and must not be recessed into any wall or cavity, or tiled up to, as this prevents air circulating to the rear of the unit.

9.

If pipework and/or electrical 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.

Electrical

1. The shower unit must be earthed by connecting the supply cable earth conductor to the earth terminal.

Supplementary bonding: Within the bathroom or shower room, all accessible conductive parts of electrical equipment and extraneous conductive parts that are likely to introduce earth potential, must be electrically bonded to earth using a minimum cable size of 4.0 mm 2 if the cable is not mechanically protected

(2.5 mm 2 if mechanically protected).

2.

Power supply cable must have a minimum cross sectional area of 1 mm².

3.

Power supply must be 230-240 V at 50 Hz. The isolating switch must be double pole switched, fused at 3 Amps, with at least a 3 mm contact separation gap to each pole.

4. Do not turn the electrical supply on until all plumbing connections have been made and the shower unit has been commissioned as the unit must not be operated dry.

5.

A 30 mA RCD (residual current device) must be fitted. This may be part of the consumer unit or a separate unit.

6.

Fuses do not give personal protection against electric shock.

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Plumbing

1.

A storage capacity of cold water of 230 litres (50 gallons) is required to provide adequate showering time. Insufficient storage may result in the pump being run dry.

2.

Layout and sizing of pipework must be such that nominally equal inlet supply pressures are achieved and the effects on the shower performance of other draw-offs are minimised.

Make sure the shower unit is the first draw-off from the water supply.

3.

Avoid routing the high level hot feed pipe upward to the same level as the cold tank e.g. into loft space, as air locks may result.

4. Do not solder supply pipework connected to the shower unit as heat transfer may damage plastic components.

5. Do not use jointing compounds on the shower unit joints, they may cause damage to the mechanism inside.

6. Do not insert fingers into the push fit connections.

7.

The supply pipe ends must be free from burrs , as these will damage the push fit seals.

8.

Do not use stainless steel piping for inlet pipework.

9.

If plated tubing is used for inlet pipework remove the plating from the last 25 mm of the tube to make sure of a good seal.

10.

15 mm polythene plastic pipe suitable for hot water may be used to supply the shower unit, but internal pipe supports must be used.

11.

Supplies must be thoroughly flushed to remove any debris before connecting the shower unit.

12.

Fit non-restrictive (free-flowing) isolating valves in the inlet pipework to the appliance. Make sure isolating valves can be accessed easily.

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Warning!

Do not fix the shower unit to the wall until plumbing and electrical installations have been completed.

1.

Decide on a suitable location for the shower unit avoiding buried cables and pipes . The unit should be positioned at a height convenient for all the family (at least 200 mm below the ceiling to allow for the fitting and removal of the unit cover).

The handset should spray away from the shower unit, either down the centre line of the bath or across the shower cubicle opening. Make sure when the hose retaining ring is placed on the lowest position on the slide bar, the handset does not fall below the minimum clearance gap , between the bath or shower tray spillover level of 25 mm.

Hose Retaining Ring

Spillover level

25 mm Minimum

2.

Hot and cold inlet supply connections are:

Hot – Left Cold – Right

Run the hot and cold water supply pipes at 28 mm centres, make sure that the pipe ends project 30 mm into the inlet manifold.

Warning! Supply connections must not be connected in reverse.

Caution! Do not use stainless steel piping for inlet pipework.

Caution! If the pipework is chrome plated remove all traces of chrome from the connecting surfaces. If the chrome is not removed then the inlet manifold collets will not grip the supply pipe.

30

28

275

Miniature Trunking

H

All dimensions in millimetres

C

30

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3.

Make sure that the end of the supply pipework is cut squarely and is free from burrs , which will damage the inlet manifold seals.

Chamfer the end of the pipe to assist insertion into the fitting and prevent the ‘O’ seal tearing.

Warning!

Do not insert fingers into the push-fit connectors as this can result in injury.

Thoroughly flush the incoming hot and cold water supply pipes to remove debris before connecting the shower unit.

Chamfer

Trim the thinned section of the case covering the cable channel.

4.

Run the electrical supply cable in surface mounted miniature trunking

(not supplied). Allow sufficient cable to connect to the terminal block

(approximately 275 mm). Strip back approximately 30 mm of outer cable insulation.

5.

Loosen the three cover securing screws and remove the shower unit cover.

Note!

The cover securing screws are captive and should not be unscrewed fully from the unit case.

Securing

Screws

6. Insert the push-fit release tool between the flange of the blanking plug and the inlet manifold collet and lever the plugs outward. Whilst holding back on the collet, pull out the appropriate blanking plug by hand.

Blanking Plug

Collet

Push-fit

Release Tool

13

Inlet Manifold

Securing Screw

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7.

Temporarily locate the shower unit.

8.

Position the shower unit on the wall and mark the three fixing points.

Note!

Installers may wish to obtain alternative proprietary cavity fixings for dry lined, stud partition or dry partition wall structures.

9.

Use the push-fit release tool to push the grey collars into the manifold to release the shower unit from the supply pipes.

Warning!

Make sure there are no buried cables or pipes near the fixing points before drilling.

10.

Drill 9.5 mm holes and fit the wall plugs supplied.

11.

Cut away and trim the thinned section at the top or bottom of the case to allow the electrical supply cable to run down the rear of case.

Fixing Points

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12.

Fit the three rubber feet into the recesses in the rear of the case as shown. The feet will reduce the noise transmitted by the power shower through the wall.

Warning!

Blanking plates should be fitted to stop water ingress into the inside of the unit.

Rubber Feet

13.

Fit the blanking plates to the unit case in the following manner.

Fit the half blanking plate to the top of the case.

For Top Inlet Pipework

Fit the full blanking plate to the bottom of the case.

For Rear Inlet Pipework

Fit the full blanking plates to the top and bottom of the case.

Fit the full blanking plate to the top of the case.

For Bottom Inlet Pipework Fit the half blanking plate to the bottom of the case.

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14.

Locate the shower unit on the inlet supplies and push the inlet manifold onto the pipework until resistance is felt.

DO NOT FORCE!

Note!

PTFE tape or liquid jointing compound must not be used and is not required to assist connection.

15.

The inlet manifold collet and ‘O’ seals will seal automatically.

Warning!

The shower unit must be fixed to the wall at all three fixing points. The fixing holes are elongated to assist in vertical and horizontal alignment.

16.

Screw the shower unit to the wall using either the wall screws supplied or alternative fixings depending on the wall structure.

Do not over tighten!

Make sure that the electrical supply cable is correctly seated in the channel in the back of the case.

17.

Connect the live, neutral and earth conductors of the electrical supply cable to the terminal block in the following manner.

L - Live terminal block

N - Neutral terminal block

- Earth terminal block

The earth supply cable must be sleeved and make sure that all the terminal connections are tight and that no insulation is pinched.

18.

Make sure the flow control gear is set to the OFF position by turning the gear wheel anticlockwise until it stops. DO NOT force the gear wheel as damage will occur.

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Gear Wheel

Fitting the Cover

1.

Refit the unit cover and secure with the three cover securing screws.

2.

Important!

Align the flow control with the OFF position on the cover & fully push on.

3.

Push on the temperature indicator trim and the Inner temperature control knob, ensure the temperature knob fully clicks into position (See Important

Safety Information).

4.

The power thermostatic shower will now require commissioning, refer to

COMMISSIONING .

5.

Install the shower fittings, refer to the instruction manual supplied with the fittings.

Temperature

Indicator Trim

OFF Position

Flow Control

Knob

Arrow/OFF

Position

Inner

Temperature

Control Knob

17 1088849-W2-I

COMMISSIONING

The unit must not be run dry. Before proceeding any further with the installation the shower unit must be commissioned.

1.

Connect the flexible hose to the outlet of the shower unit.

Caution!

Do not over tighten.

Hose Washer

Hose

2.

Turn on the water supplies and check for leaks.

3.

Switch on the electrical supply.

Maximum

Flow Position

4.

Turn the outer flow control anticlockwise to full flow.

Temperature Indicator

Outer Flow Control

Cooler 5.

Rotate the inner temperature control anticlockwise to check the hot supply and clockwise to check the cold supply.

Warmer

Inner Temperature

Control

6.

Turn the flow control clockwise to the

OFF position.

7.

T h e s h o w e r u n i t i s n o w commissioned.

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Outer Flow Control OFF Position

Maximum Temperature Setting

It may be necessary to adjust the maximum temperature for site conditions to make sure of safe showering from the unit. Make sure that the hot water temperature is at least 12 °C above the required temperature for correct operation of the thermostatic power shower.

To reset the maximum outlet temperature follow the sequence below :

1.

Turn the outer flow control anticlockwise to maximum flow.

2.

Turn the inner temperature control knob anticlockwise to the maximum temperature stop. Do not depress the override button .

Maximum

Flow Position

Outer Flow Control

Maximum Temperature Position

3.

Check the shower temperature.

4.

If the maximum temperature requires adjustment then remove the outer flow control and the inner temperature control knobs. Slide the end of the push-fit release tool under the outer flow control, lever the outer flow control and the inner temperature control knobs off together from the shower unit.

5.

Remove the small label covering the retaining screw on the temperature hub. Unscrew the retaining screw and remove the temperature hub.

Safety Note! This will change the factory setting.

19

Inner Temperature Control Knob

Temperature

Hub

Temperature Hub

Retaining Screw

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Caution!

When resistance is felt DO

NOT USE FORCE to turn the spindle any further as this is the maximum shower temperature obtainable with the available hot water storage temperature. FORCE will DAMAGE the internal components.

6.

Turn the temperature spindle until the maximum water temperature required is obtained.

Warmer - Turn spindle anticlockwise

Cooler - Turn spindle clockwise

7.

Insert the temperature hub with the pip on the temperature hub aligned with the slot on the thermostatic cartridge.

Secure the temperature hub with the retaining screw.

Temperature Spindle

8.

Insert the outer flow control knob in the maximum flow position.

Align the pip on the temperature hub with the slot in the thermostatic cartridge.

Temperature Indicator Trim

9.

Insert the temperature indicator trim and the inner temperature control knob. (see section ‘Fitting the Cover’)

Caution!

If resistance is felt when turning the inner temperature control knob, DO NOT USE FORCE to turn the knob any further as this will

DAMAGE internal components.

10.

Make sure the inner temperature control knob can be fully turned in both directions.

Maximum Flow Position

11.

Check the maximum temperature setting. If necessary repeat the temperature adjustment until the required temperature is achieved.

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Inner Temperature Control Knob

Disabling the Temperature Override Button

The temperature override button allows the user to override the preset maximum temperature. The temperature override button should be disabled if the power shower is to be used by the young, the elderly, the infirm, or anyone inexperienced in the correct operation of the controls.

Follow the instructions below to disable the temperature override button:

1.

Turn the outer flow control knob clockwise to the off position and the inner temperature control knob clockwise to full cold.

2.

Slide the end of the push-fit release tool under the outer flow control knob and lever the control knob assembly off the shower unit.

Off Position

3.

Unclip the concealed end of the override button from the temperature indicator trim and carefully remove the override button.

4. Rotate the override button through half a turn (180°) and refit. Make sure the override button is flush with the temperature indicator trim.

5.

Insert the outer flow control knob in the off position.

Full Cold Position

Temperature Indicator Trim

6.

Push on the temperature indicator trim and the Inner temperature control knob, ensure the temperature knob fully clicks into position (See Important

Safety Information).

7.

The temperature override button is now disabled.

Override Button

Flow Control

Knob Arrow / OFF

Position

21

Inner Temperature

Control Knob

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OPERATION

This shower can deliver scalding temperatures. For continued safe operation it is fitted with an adjustable maximum temperature setting. This must be checked and adjusted as necessary to suit both site conditions and user’s comfort.

1.

Turn the outer flow control knob until the desired flow of water is obtained. The flow of water will increase the further the control is turned anticlockwise .

Outer Flow Control Knob

2.

Turn the inner temperature control anticlockwise for warmer water and clockwise for cooler water, the numbers indicate the relative temperature:

1 = cold, 4 = tepid, 7 = Hot

Warning!

Operation of the override button will allow a shower temperature above the preset maximum.

Warmer Cooler

Inner Temperature Control Knob

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3.

To override the preset maximum temperature press the override button and turn the inner temperature control knob anticlockwise.

Press the Override Button and turn the Inner

Temperature Control Knob anticlockwise.

4.

Turn the outer flow control knob fully clockwise to stop the flow of water.

Outer Flow Control Knob

Off Position

23 1088849-W2-I

FAULT DIAGNOSIS

Fault Diagnosis - User Maintenance

The appliance is fully performance tested after assembly. Providing it has been correctly installed and is operated as advised, difficulties should not arise. In the unlikely event that you experience problems with your appliance then the following procedure will enable you to undertake basic fault finding before contacting the person responsible for installing your shower.

Remedy

Reset maximum temperature, refer to COMMISSIONING .

Malfunction

Maximum showering temperature too hot.

Shower temperature too cold.

Blend temperature unstable.

Cause

Maximum temperature incorrectly set.

Hot water cylinder temperature less than 12 °C above shower temperature.

Maximum temperature incorrectly set.

Spray plate blocked.

Adjust cylinder temperature.

Note!

It is recommended stored water temperatures do not exceed 65 °C .

Reset maximum temperature, refer to COMMISSIONING .

Clean spray plate, refer to the instruction manual supplied with the shower fittings .

Contact your installer.

Open valve.

Pump does not operate.

Low or no water flow.

Inlet filters blocked.

Isolating valve partially closed.

Plumbing system fault.

Electrical supply failure.

PCB or Potentiometer failure.

Motor overheated, thermal switch operated.

Isolating valves closed.

Inlet filters blocked.

Check valve fitted incorrectly.

Appliance sited above cold water storage cistern.

Plumbing system fault

(airlock).

Contact your installer.

Contact your installer.

Contact your installer.

If the thermal switch operates repeatedly contact customer support for further advice.

Open the isolating valves.

Contact your installer.

Contact your installer.

The appliance is not suitable for negative head installations, refer to INSTALLATION

REQUIREMENTS .

Contact your installer.

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Fault Diagnosis - Installer Maintenance

The Thermostatic Power Shower is one part of an entire plumbing system. The fitting of a pump places additional requirements on the plumbing system. Some systems may require plumbing modifications to allow them to cope with higher flow rates.

Providing the Thermostatic Power Shower has been correctly installed and is operated as advised, difficulties should not arise. Fault diagnosis and maintenance must be carried out by a competent person for whom the fault diagnosis table is provided.

In the event of any of the following tests failing, re-check as appropriate before contacting the Mira Showers Customer Support Department, refer to the back cover of this guide.

Malfunction

Shower runs for a short time

(30-60 seconds) then flow reduces, splutters or stops.

Aggravated when other hot taps are in use. Less evident on full cold.

Shower runs cool after a short time

(1-2 minutes) then flow splutters.

Flow of water virtually stops and surges on/off, after a few minutes.

Shower runs cold after

5-10 minutes.

Shower temperature affected by use of adjacent hot/cold tap.

Maximum shower temperature too hot.

Cause

Air is being sucked down the vent pipe, as the hot take off to the shower is too high up the pipe.

Insufficient storage of hot water in cylinder.

Insufficiently sized pipework for both systems to be used together.

Maximum temperature incorrectly set.

Refer to the plumbing system diagram in the

REQUIREMENTS correct connection method.

Note the 1 metre hot takeoff dimension. Consider increasing the cold feed pipe to the cylinder to 28 mm diameter.

Remedy

INSTALLATION

for the

Air entering the hot pipework. Refer to the plumbing system diagram in the INSTALLATION

REQUIREMENTS for the correct connection method.

Insufficient storage of cold water in cistern

(230 litres recommended).

Increase storage size of the cold water cistern.

Increase the storage size of the hot water cylinder.

Increase the pipe sizes or separately feed the shower.

Refer to the plumbing system diagram in the refer to

INSTALLATION

REQUIREMENTS .

Reset maximum temperature,

COMMISSIONING .

25 1088849-W2-I

Malfunction

The maximum shower temperature is too cold.

Cause

Hot water cylinder temperature less than

12 °C above the showering temperature.

The blend temperature is unstable.

Maximum temperature incorrectly set.

Spray plate blocked.

Inlet filters blocked.

Isolating valve partially closed.

Solenoid valve failure.

Drip from the shower head.

The pump does not operate.

Electrical supply failure.

PCB failure.

Potentiometer failure.

Motor overheated, thermal switch operated.

The pump does not stop or change speed when the flow knob is turned.

Low or no water flow.

Potentiometer failure.

PCB failure.

Isolating valves closed.

Inlet filters blocked.

Appliance sited above cold water storage cistern.

Plumbing system fault

(airlock).

Blocked spray plate.

Remedy

Adjust the cylinder temperature. Note!

It is recommended that the stored water temperature does not exceed 65 °C .

Reset the maximum temperature, refer to

COMMISSIONING .

Clean the spray plate, refer to the instruction manual supplied with the shower fittings .

Clean the inlet filters.

Open the isolating valve.

Renew the solenoid valve assembly.

Check the power supply.

Renew the PCB.

Renew the harness assembly.

If the thermal switch operates repeatedly contact customer support for further advice.

Renew the harness assembly.

Renew the PCB.

Open the isolating valves.

Clean the inlet filters.

The appliance is not suitable for negative head installations, refer to the INSTALLATION

REQUIREMENTS .

Re-route the pipework to avoid airlock.

Clean the spray plate, refer to the instruction manual supplied with the shower fittings .

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MAINTENANCE

Warning! There are no user serviceable components beneath the cover of the appliance. Only a competent tradesperson should remove the cover.

Before removing the cover, the electricity supply must be turned off at the mains and if applicable, the appropriate circuit fuse removed. Mains electrical connections are exposed when the cover is removed.

Before replacing any parts make sure that the underlying cause of the malfunction has been resolved.

Cleaning

Always read the IMPORTANT SAFETY INFORMATION for your shower.

Cleaning the showerhead

Many household and commercial cleaners, including hand and surface cleaning wipes contain abrasive and chemical substances that can damage plastics, plating and printing and should not be used. These finishes should be cleaned with a mild washing up detergent or soap solution, and then wiped dry using a soft cloth.

It is IMPORTANT to keep the Showerhead and Hose clean and free from blockage to make sure your shower performs to its optimum. The showerhead MUST be regularly cleaned and the hose MUST be regularly inspected to ensure there is no internal collapse or blockage that could reduce the flow.

Use your thumb or a soft cloth to wipe any limescale from the soft nozzles

Unscrew the hose from the showerhead and the shower outlet.

Inspect the hose.

Warning!

Failure to keep the showerhead nozzles clear or inspect the hose for blockage or internal/external collapse can restrict the flow rate from the shower.

This may cause damage to the shower or result in the temperature delivered to the user rising to unsafe levels with a risk of scalding. You MUST ALWAYS check the temperature before using the shower.

27 1088849-W2-I

SPARE PARTS

147.67

453.01

453.03

453.07

453.08

453.12

453.13

453.14

453.15

453.22

Check Valve Pack

Cartridge - Thermostatic

Motor Pump Assembly - components identified ‘A’

Inlet Manifold Assembly - components identified ‘B’

PCB Assembly - Power

Harness Assembly - Concentric - components identified ‘C’

Solenoid Valve Assembly - components identified ‘D’

Filter/Cap Assembly

Seal Pack - components identified ‘E’

Stud Wall Fixing Kit (Push-fit Release Tool, 3 x Fixing Screws,

3 x Rubber Wall Plugs) - components identified ‘H’

Mixer Valve Body - components identified ‘F’ 453.23

453.24

453.28

Inserts/Rubber Feet Pack - Power - components identified ‘G’

Outlet Elbow Assembly

1532.332 Control Knob Assembly

1532.365 Cover

H

G A

A,D,E

453.08

D

H

G

G

1088849-W2-I

B

C

B

147.67

H

E

B,E,F

453.01

453.14

28

E

A

A,F

E,G

C

D,E

453.28

1532.332

1532.365

ACCESSORIES

Genuine Mira accessories can be purchased direct from Customers Services (our contact details can be found on the back cover of this guide) or from approved stockists or merchants.

Premium Shower Seat

White/Chrome - 2.1731.001

Grey/Chrome - 2.1731.002

Stylish, slim-line and robust shower seat for use in or outside of the shower area.

Folds up when not in use.

Note! Must be installed onto a solid wall.

Shower Seat

White - 2.1536.128

White/Chrome - 2.1536.129

For use in or out of the showering area. Folds up when not in use .

Note! Must be installed onto a solid wall.

Double Outlet Check Valve

(DCV-H)

Chrome - 1.0.110.55.1

An outlet double check valve, designed to prevent the back flow or back-siphonage of potentially contaminated water, through shower controls which are fitted with a flexible shower hose as part of the outlet shower fitting.

29 1088849-W2-I

NOTES

1088849-W2-I 30

NOTES

31 1088849-W2-I

CUSTOMER SERVICE

Guarantee

Your product has the benefi t of our manufacturer’s guarantee which starts from the date of purchase.

This guarantee only applies in the United Kingdom and Republic of Ireland.

Activating Your Guarantee

Registering your guarantee is quick and simple. To ensure your product is covered, please register online .

Scan the QR code to activate your guarantee now or call 0800 5978551 within 30 days of purchase (UK only).

What is Covered:

● The guarantee applies solely to the original installation under normal use.

● The product must be installed and maintained in accordance with the instructions given in this guide.

● Servicing must only be undertaken by us or our appointed representative.

● Repair under this guarantee does not extend the original expiry date. The guarantee on any replacement parts or product ends at the original expiry date.

● For shower fittings or consumable items we reserve the right to supply replacement parts only.

The guarantee does not cover:

● Call out charges for non product faults (such as damage or performance issues arising from incorrect installation, improper use, inappropriate cleaning, lack of maintenance, build up of limescale, frost damage, chemical attack, corrosion, system debris or blocked fi lters) or where no fault has been found with the product.

● Water or electrical supply, waste and isolation issues.

● Routine maintenance or replacement parts to comply with the requirements of Building /

Plumbing / Electrical Standards or Schemes.

● Compensation for loss of use of the product or consequential or indirect loss of any kind.

● Damage or defects caused if the product is repaired or modifi ed by persons not authorised by us or our appointed representative.

● Accidental or wilful damage.

● Products purchased ex-showroom display.

● Disinfection or descaling to reduce bacterial growth or contamination.

What to do if something goes wrong

If your product is not working correctly please refer to this manual for fault diagnosis and to check that it is installed and commissioned in accordance with our instructions. If this does not resolve the issue, our Customer Services team are here to help get you back up and running. To help us solve your problem quickly, please have your product name, power rating

(if applicable) and date of purchase to hand.

Visit www.mirashowers.co.uk

Visit our website to register your guarantee, book a service visit, diagnose faults and purchase products.

Spares and Accessories

We stock a full range of spare parts and fi ttings and are all available to purchase either online or over the phone.

Our online spare parts selector tool will help you quickly and easily identify the spare part for your product.

Visit www.mirashowers.co.uk/parts-accessories

Replacements and Repairs

In the unlikely event that your product needs a repair, our nationwide repairs and installation team are here to help. You can book a convenient date and time online.

Scan the QR code to book a service visit now or visit www.mirashowers.co.uk/ support/repair-services/repair-service

We also off er a comprehensive replacement service for when your product needs a little refresh, visit our website or contact our team for more information on our replacement services.

Help us improve

Your experience is important to us and your review

(whether good, bad or otherwise) will be posted on

Trustpilot.com immediately to help other people make more informed decisions.

Visit uk.trustpilot.com/review/www.mirashowers.co.uk

Need to get in touch?

UK

T: 0800 001 4040

E: [email protected]

www.mirashowers.co.uk

Eire

T: 01 531 9337

E: [email protected]

www.mirashowers.ie

Mira is a registered trade mark of Kohler Mira Limited.

The company reserves the right to alter product specifi cations without notice.

Registered Offi ce:

Cromwell Road,

Cheltenham,

Gloucestershire

GL52 5EP

1088849-W2-I (B85N)

EU Importer address

K/E S.A.S.

3 rue de Brennus,

93631, La Plaine Saint-Denis,

France

32

14648