SHOWER CONTROL Installation & User Guide Fino.pdf · User Guide Installation & SHOWER CONTROL THESE...

User Guide

Installation &

SHOWER CONTROL

THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER

2

p y

Contents

1 ........ Introduction .......................................................................................... 3

2 ........ Important Safety Information ............................................................. 3

3 ........ Pack Contents Checklist ..................................................................... 4

4 ........ Dimensions .......................................................................................... 6

5 ........ Specification ........................................................................................ 7

6 ........ Installation Requirements ................................................................... 9

7 ........ Installation ..........................................................................................14

8 ........ Commissioning ..................................................................................27

9 ........ Operation .............................................................................................30

10 ...... Fault Diagnosis ...................................................................................32

11 ...... Maintenance ........................................................................................34

12 ...... Spare Parts ..........................................................................................41

Guarantee, Customer Care Policy, and How to contact us ......... Back cover

If you experience any difficulty with the installation or operation of your newshower control, then please refer to Section 10, "Fault Diagnosis", beforecontacting Kohler Mira Limited. Our telephone and fax numbers can befound on the back cover of this guide.

3

1 IntroductionSection

Thank you for purchasing a quality Mira product. To enjoy the full potential of your newproduct, please take time to read this guide thoroughly, having done so, keep it handy forfuture reference.

Important Safety Information1Section

Important Safety InformationWarning!

Caution!1. Read all of these instructions.

2. Retain this guide for later use.

3. Pass on this guide in the event of change of ownership of the installation site.

4. Follow all warnings, cautions and instructions contained in this guide.

5. The plumbing installation must comply with the requirements of UK Water Regulations/Byelaws (Scotland), Building Regulations or any particular regulations and practices,specified by the local water supplier. The installation should be carried out by aplumber or contractor who is registered or is a member of an association suchas:

6. Anyone who may have difficulty understanding or operating the controls of any showershould be attended whilst showering. Particular consideration should be given to theyoung, the elderly, the infirm, or anyone inexperienced in the correct operation of thecontrols.

An exposed shower control for connection to exposed (rising or falling) or rear entrypipework.

A built-in shower control for connection to concealed pipework.

- Scottish and Northern Ireland Plumbing Employers’ Federation(SNIPEF), Scotland and Northern Ireland.

- Institute of Plumbing (IOP), throughout the UK.- National Association of Plumbing, Heating and Mechanical Services Contractors

(NAPH & MSC), England and Wales.

The Mira Fino is a thermostatic shower control with independent selection of spray forceand temperature. The shower control incorporates a wax capsule temperature sensingunit. This provides an almost immediate response to changes in pressures or temperatureof the incoming water supplies to maintain the selected temperature. An adjustablemaximum temperature stop is provided which limits the temperature to the desired level.An override button allows the user to exceed the preset maximum temperature. The flowcontrol utilizes ceramic plate technology operating directly on the outlet to provideprecise control and isolation of the water outlet. The Mira Fino also includes checkvalvesand strainers.Shower controls covered by this guide:

Section

2

Mira Fino

Mira Fino B

Products manufactured by us are safe provided they are installed, used and maintainedin good working order in accordance with our instructions and recommendations

4

2 x Pipe Concealing Plates 2 x Olives 2 x Compression Nuts

2 x Fixing Screws 2 x Wallplugs

⌧ Tick the appropriate boxes to familiarise yourself with the part names and to confirmthat the parts are included.

1. Mira Fino Surface Mounted Shower Control

3 Pack Contents ChecklistSection

1 x Fino Shower Control

1 x Quad Key

1 x 3 mm A/F Hexagon Wrench

5

2. Mira Fino Built-in Shower Control

3. Documentation1 x Installation and User Guide

1 x Customer Support Brochure

1 x Fino Built-in Shower Control

3 x Compression Nuts 3 x Olives

2 x Fixing Screws 2 x Wallplugs

1 x Concealing Plate Assembly

(with bracket, cavity seal andbuilding-in shroud fitted)

1 x Silicone Sealant

1 x Quad Key

2 x M4 x 30 mm

3 x M5 x 60 mm (two fitted)

6

DimensionsSection4

All dimensions are nominal and in millimetres

Mira Fino Built-in Shower Control

Mira Fino Shower Control

110 mm153 mm

38 mm

209 mm

90 mm

56 mm 68 mm

6 mm min/23 mm max.

157 mm

80 mm 210 mm

20 mm

7

SPECIFICATIONS5 SpecificationsSection

Inlet15 mm Compression or 1/2'' BSP male (Fino).15 mm Compression (Fino B).

Outlet1/2'' BSP male (Fino), for connection to bottom outlet flexible hose only.15 mm Compression or 1/2'' BSP male (Fino B).

Pressure RangeOptimum maintained pressure: 1 bar (Conversion 1 bar=10 Metres water= 100kPa).Maximum maintained pressure: 5 bar.Maximum static pressure: 10 bar.Maximum flow rate: 40 l/min.

TemperaturesClose temperature control is provided between 30 and 45 °C.

Note! The temperature control specification, outlined below, is achieved withthe blend set between 35 °C and 45 °C, with supply temperatures of 15 °Ccold and 65 °C hot, AND, nominally equal inlet supply pressures.

The blended temperature is maintained within 1 °C with a 10 °C change inthe hot or cold supply.

The blended water temperature is maintained within 1 °C when the pressurebetween the inlet and outlet is halved (defined as a pressure loss ratio of 2:1)on either the hot or cold side.

The shower control will maintain temperature control with a pressure loss ofup to 10:1.

Maximum hot water supply temperature is 85 °C although maximumrecommended is 60 °C for safety reasons.

The wax capsule sensor effects a shut down to seepage in approximately 2seconds if the cold supply fails. Shut down to seepage is only achieved if thehot supply is 12 °C above the blend temperature.

Connections

Note! For optimum performance, the initial supply pressures should benominally equal.The Mira Fino will maintain a satisfactory spray pattern and thermostaticperformance with inlet pressures down to 0.2 bar.

8

Standards

Designed to comply with BS EN 1111 and 1287 for thermostatic mixing valves,and to be used within systems designed to BS6700.

Flow Rates

00 100 200 300 400 500

PRESSURE LOSS kPa

ECO-STARTSTARTSOOTHEFORCE

10

20

30

40

50

FLO

WR

ATE

lp

m

0

10

20

30

40

50

100 200 300 400 5000

PRESSURE LOSS kPa

FLO

WR

ATE

lp

m

ECO-STARTSTARTSOOTHEFORCE

Fino with Linesse Fittings High Capacity Spray Plate

Fino with Linesse Fittings Low Capacity Spray Plate

9

6 Installation RequirementsSection

Typical Suitable Installations

Float operated valve

Stop or servicing valve

Shower control

Warning or overflow pipe

Drop tight pressure reducingvalve (PRV)

Key to symbols appearing throughout this guide.

1. Layout and sizing of pipework MUST be such that nominally equal inlet supplypressures are achieved and effects of other draw-offs are minimised.

2. The Mira Fino is suitable for installation as part of a gravity-fed plumbing system.Minimum inlet pressures of 0.2 bar (2 metre head) are required, though inletpressures of 1 bar (10 metre head) are recommended for optimum performance.If minimum inlet pressures are not available then it will be necessary to install apump.

3. When used with a high pressure system above 5 bar maintained pressure,a pressure reducing valve will be necessary. It is important that the systempressures are within the range specified for the Mira Fino.

If the system pressure is not known then the system pressure MUST be measured.

Pressures are those present at the inlet to the appliance either whilst running(maintained) or in the off state (static). Nearby hot and cold taps connected to thesame proposed feed pipes as the appliance can be used to measure the staticpressure. No other fitting or appliance should be in use at this time.

4. Supply pipes MUST be flushed to clear debris before connecting the showercontrol.

5. Conveniently situated isolating valves MUST be fitted for servicing purposes.

6. If the shower control is to be used with a fully modulating multipoint waterheater, fully modulating combination boiler, thermal store or unvented systeman expansion vessel must be fitted to accommodate the expansion of water inthe domestic hot water supply (this may already be part of the system, checkthe details on the boiler/heater or contact the boiler/heater manufacturer).

7. No form of outlet flow control should be fitted, only Mira recommended fittingsshould be used in the outlet pipework.

Twin impeller inlet pump

Tempering valve

Mini expansion vessel

Non-return Valve

10

Instantaneous gas-heated showers (e.g. combination boilers)

The shower control MUST be installed with a multipoint gas water heater or combinationboiler of a fully modulating design (i.e. where the water draw-off rate indirectly controlsthe gas flow rate to the burner).

A drop tight pressure reducing valve MUST be fitted if the supply pressures exceed 5 barmaintained.

An expansion vessel MUST be fitted (and regularly maintained) as shown in the diagrambelow to ensure that excess pressures do not damage the product. This may already befitted within the boiler (check with the manufacturer) and is in addition to the normallylarger central heating expansion vessel.

The hot supply temperature MUST be at least 12 °C hotter than the required blendtemperature for optimum performance.

HOTCOLD

11

Gravity fed showers - The shower control MUST be fed from a cold water storagecistern and hot water cylinder providing nominally equal pressures.

Mains pressurised instantaneous hot water shower, heated from a thermal storePackages of this type, fitted with a tempering valve can be used.A drop tight pressure reducing valve MUST be fitted if the supply pressures exceed 5 barmaintained.

An expansion vessel MUST be fitted (and regularly maintained) if any form of backflowprevention device is fitted, e.g. non-return valve, PRV. This will ensure that excessexpansion or pulse pressures do not damage the product or the plumbing system. Theexpansion vessel may already be fitted externally or internally within the thermal store(check with thermal store manufacturer).

COLD HOT

12

HOTCOLD

Combined outlet PRVwith internal non-return valves- Expansion vessel required.

Cold takeoff after PRV- Expansion pressure taken up by

unvented cylinder expansion vessel.

Reducedpressure tounventedcylinder

HighInletPressure

Reducedpressure tocold inlet ofshower

Reducedpressure tounventedcylinder

HighInletPressure

Reducedpressure tocold inlet ofshower

ExpansionVessel

Safety devicesnot shownfor clarity

Unvented mains pressure showersThe shower can be installed with an unvented, stored hot water cylinder. Only a"competent person" as defined by the Building Regulations may fit this type of system.

For packages with no cold water take off after the appliance reducing valve, it will benecessary to fit an additional drop tight pressure reducing valve when the mains pressureis over 5 bar. The drop tight pressure reducing valve must be set at the same value as theunvented package pressure reducing valve.

Note! An expansion vessel MUST be fitted (and regularly maintained) if any form ofbackflow prevention device is fitted, e.g. non-return valve, PRV. This will ensure thatexcess expansion or pulse pressures do not damage the product or the plumbing system.

13

Pumped showers (inlet pumps)The shower can be installed with an inlet pump (twin impeller). The pump MUST belocated on the floor next to the hot water cylinder. The hot water cylinder/vent pipes mustbe arranged as shown to achieve air separation.

90 °

30 to 60 °

Air Separation

14

1. Before you complete the installation,determine whether the hot or cold waterservices will be connected to the showercontrol from the bottom (rising) or from thetop (falling).

Before you decide on the final position ofyour shower control, please bear in mindthe following:

Decide on a suitable position for the showercontrol. The position of the shower controland the shower fittings must provide aminimum gap of 25 mm between the spill-over level of the shower tray/bath and thehandset. This is to prevent backsiphonage.

7 InstallationSection

Rising or Falling Inlet Supplies

Note! The Mira Fino is supplied with inletconnections hot left, cold right and bottomoutlet as standard. For installations withreversed hot and cold supplies refer to thesection Installation: "Reversed InletConnection".

Mira Fino Surface Mounted Shower Control

Falling Supplies Rising Supplies

2. Remove the backplate by releasing,anticlockwise, the two recessed grub screwswhich retain the backplate against the brassshower control body, using the 3 mm A/Fhexagon wrench (supplied).

3. Use the installation template to mark thepositions of the fixing holes for the backplateon the wall.

Ensure the holes are vertically aligned.

Warning! Ensure there are no buried cablesor pipes in the wall before drilling.

4. Drill the two marked fixing holes and fit thewallplugs provided. Secure the backplateto the wall with the two fixing screwsprovided.

Note! Screws with larger heads will foul theshower control body.

25 mmMinimum

Spill-over Level

Hose RetainingRing

Fixing Screws

Backplate

Backplate

GrubScrew

Wallplugs

GrubScrew

15

5. Install the inlet pipework.

If necessary, use the installation templateto ensure the pipework is in the correctposition.

6. Thoroughly flush the incoming hot andcold water supplies before connectingthe shower control.

7. Use the 3 mm A/F hexagonal wrench toloosen the two grub screws that hold theinlet elbows in position.

8. Rotate the inlet elbows so that the inletconnector nipple is pointing up for fallingsupplies, or down for rising supplies.Tighten the grub screws.

Make sure the elbow is aligned so thatthe grub screws locate into the spotfaces in the inlet elbow.

9. Fit the shower control body onto thebackplate and secure by in position withthe two grub screws, using the 3 mm A/Fhexagonal wrench.

10. Slide the compression nut, then the olive,over the hot and cold inlet pipework. Ifnecessary, smear ‘liquid jointing’ sparinglyon the pipe end and the outside of the olive.

11. Insert the hot and cold inlet pipework into theopening of the inlet connector nipple thenslide the olive and compression nut intoplace.

12. Carefully tighten the compression nut. Usea cloth to protect the plated surfaces.

InletElbow

Inlet Pipework

Shower Control

Grub Screw

O Seal

CompressionNut

Olive

Spot Faces

Backplate

GrubScrew

GrubScrew

InletConnectorNipple

InletConnectorNipple

16

Back Inlet Supplies

1. Follow the shower control installationprocedure as for “Rising or FallingInlet Supplies”: instructions 1. to 4.inclusive.

2. Use the cardboard installation templateto mark the positions of the holes forthe backplate and the pipe centres.

3. Remove the plaster and brickwork tothe required depth to conceal the supplypipework.

Note! Depth must be sufficient toprevent pipe concealing plates foulingon the plumbing elbows.

4. Install the hot and cold water supplypipework ensuring that the pipe endsemerge from the wall surface at 153mm centres, and project from thefinished wall surface by 13 mm.

Use the installation template to ensurethe pipes are in the right position.

Backplate

ConcealingPlate

32 mm

13 mm fromfinished wallsurface

CircularRecess

Elbow

153 mm

10 mm minbetween elbowand finishedwall surface

Spirit Level

Installation Template

17

5. Make good the wall surface, allowing fortwo circular recesses measuring 32 mmdiameter x 10 mm depth, to accept thetwo pipework concealing plates.

Fit the pipework concealing plates overhot and cold water supply pipework.

6. Thoroughly flush the incoming hot andcold water supply pipes beforeconnecting the shower control. Failureto do so may result in productmalfunction.

7. Slip the compression nuts and olivesover the supply pipes.

8. Locate the shower control body onto thebackplate and inlet supply pipework,then secure by tightening, clockwise,the two recessed grub screws, using the3 mm A/F hexagon wrench (supplied).

Tighten the compression nuts, using ifnecessary, a cloth to protect the platedsurfaces.

Turn on the water supplies and checkfor any leaks!

9. This completes the installation of theMira Fino for “Back Inlet Supplies”.

Backplate

Compression Nut

18

1. Before you decide on the final position ofyour shower control, please bear in mindthe following:

- Decide on a suitable position for theshower control. The position of theshower control and the showerfittings must provide a minimum gapof 25 mm between the spill-overlevel of the shower tray/bath and thehandset. This is to preventbacksiphonage.

- Determine whether the hot or coldwater services will be connected to theshower control from the top (falling) orfrom the bottom (rising).

2. Familiarise yourself with the hot and coldwater inlet ports and outlet port. They canbe identified as follows:

The Mira Fino is supplied with inletconnections hot left, cold right and topoutlet as standard.

To change the position of the inlet refer to“Reversed Inlet Connection”:instructions 1. to 6. inclusive.

3. Determine the route for the incoming hotand cold water supply pipework. The outletpipework to a flexible shower fitting is bestpositioned to emerge above and to one sideof the shower control to allow the flexiblehose to drape around the underside of theshower preventing the hose from interferingwith the knob (refer to diagram).

25 mmMinimum

Spill-over Level

Hose RetainingRing

The built-in shower control incorporates an integral wall mounting bracket assembly whichcan be used to install the shower into a solid, dry-lined, stud partition or dry partition wallstructure, shower cubicle or laminated panel.

Mira Fino Built-in Shower Control

Solid, Dry Lined, Stud Partition or Dry Partition Wall Structures

19

4. If installing the shower into a solid wall,mark an opening sufficient to accommodatethe shower control approximately 180 mmx 125 mm on the surface of the wall.

Alternatively, if installing the shower into adry-lined wall, use the installation templateand mark around the outside edge.

5. Mark the route of the supply and outletpipes.

6. Remove the plaster and brick/block for theshower control to a depth of between 64mm and 81 mm from the finished surfaceof the wall. The support bracket requires aclearance depth of 58 mm, with a finishedwall surface thickness of between 6 and 23mm.

Note! The maximum and minimum depthlevels are indicated on the outer sectionsof the building-in shroud.

7. Remove the plaster and brick/block workfor the supply and outlet pipes.

180

mm

125 mm

Spirit Level


6 mm Minimum Depth

SupportBracket

Finished wallsurface

Finished wallsurface

23 mmMaximumDepth

58 mm

20

8. Mark the final position on the wall of thetwo larger outer diameter fixing holes inthe flanges of the wall mounting bracket.This bracket must be fixed at 45°.

9. Drill and suitably plug the two markedfixing holes.

Position the hot and cold supplies.

10. Install the shower control aligning the twoflange holes of the wall mounting bracketassembly with the pre-drilled fixing holes.

Secure the shower control with the twofixing screws supplied.

11. Remove all three sections of the building-in shroud. Align the hot and cold supplyand top outlet pipes with the valve but donot connect to the valve.

12. Remove the support bracketand valve unit from the wall andthoroughly flush the hot and cold watersupply pipes. The supplies must be cleanand free from debris before connectingthe shower control. Failure to doso may result in product malfunction.

Note! The Fino is supplied with inletconnections hot left, cold right and topoutlet as standard. For installations withreversed hot and cold refer to Section 9,Reversed inlet connections.

21

13. Stretch the rubber seal over the valve inletand outlet threads and loosely attach thecompression nuts and olives.

14. Fix the support bracket and valve unit intothe wall with the two fixing screws.

15. Insert the hot and cold supply and top outletpipes through the compression nuts andolives. Ensure that each pipe is pushedfully into the valve.

Note! For falling inlet supplies the outletpipe may have to be set deeper into thewall.

16. Hold each pipe in position and use a suitablespanner to tighten the compression nuts.Do not pinch the rubber seal.

17. Using a suitable tool, push the rubber cavityseal over each of the compression nutsand on to the pipework. Do not pierce therubber seal.

18. Turn on the water supplies and check forany leaks.

Compression Nut Olive

RubberSeal

Threads

Compression NutRubberSeal

22

FINISH

MA

X

MIN

19 Refit the three building-in shroud sectionsthat you removed earlier. Secure the shroudin position with the screws.

20. Plaster and tile up to the tapered sides ofthe plastic building-in shroud and, whenset, remove the shroud. The two longershroud retaining screws should be kept foruse later.

Make sure that the finished tiled wall surfaceis within the FINISH arrow on the building-in shroud.

21. Apply a bead of silicone sealant betweenthe rubber seal and the tiled surface.

22. Fit the back plate over the valve makingsure that the rubber seal is between theplate and the tiled surface. Secure the backplate in position with the three M5 x 60 mmfixing screws (supplied).

Caution! Make sure that you do notovertighten the screws.

Rubber

Seal

Back Plate

Finished Surface

Rubber Cavity Seal

Silicone Sealant

Building-in Shroud

23

Flow lever23. Remove the temperature knob from the

concealing plate.

Line up the flow lever with the top hub. To fitthe concealing plate, firstly clip it over the topof the back plate and then push it firmly untilit locates on the bottom.

Align the temperature knob with the bottomhub and re-attach.

24. This completes the installation of the MiraFino for installation into “Solid, Dry-lined,Stud Partition or Dry Partition WallStructures”.

24

Laminated Panel and Shower Enclosures (Front Face)The built-in shower control is supplied with a support bracket that can be used to install the showercontrol into the front face of a stud partition wall structure or shower enclosures. The front faceinstallation of the support bracket is only practical where an applied surface finish e.g. plaster or tilescan conceal flanges of the bracket.

1. Follow the shower control installationprocedure as for “Solid, Dry-lined, StudPartition or Dry Partition WallStructures”: instructions 1. to 3.inclusive.

2. Use the installation template (supplied)to mark the size of the hole required onthe panel.

Bend the tabs outwards and use a spiritlevel to ensure that the hole is markedsymmetrically.

Mark around the outside edge of thetemplate.

3. Carefully cut the hole in the panel.

4. Follow the shower control installationprocedure as for “Solid, Dry-lined, StudPartition or Dry Partition WallStructures”: instructions 8. and 9.inclusive.

5. Fix the mounting bracket and valve unit tothe panel with the two fixing screws(alternative fixing screws may berequired). Make sure that the lip on therubber seal is on the outside face of thepanel.

6. To complete the installation, followinstructions 11 to 23 of “Solid, Dry-lined,Stud Partition or Dry Partition WallStructures”.

Spirit Level


Bend tabs outwardsand place spirit level ontabs to level thetemplate

58 mmClearance

Greaterthan 6 mm

23 mmMaximumDepth

6 mm Maximum Depth

6 mm Minimum Depth

FinishedWall Surface

FinishedWall Surface

25

Laminated Panels and Shower Enclosures (Rear Face)The built-in shower control incorporates an integral wall mounting bracket assemblywhich can be used to install the shower into the rear face of a shower enclosure orlaminated panel.

The building-in depth for the integral wall mounting bracket assembly is 58 mm. Theintegral wall mounting bracket assembly can be used to install the shower control into alaminated panel or shower enclosure of between 4 and 21 mm. The building-in depthcalculation must include the final thickness of plaster and tiles.

1. Follow the shower control installationprocedure as for “Solid, Dry-lined, StudPartition or Dry Partition WallStructures”: instructions 1. to 3.inclusive.

2. Use the installation template (supplied)to mark the size of the hole required onthe panel.

Bend the tabs outwards and use a spiritlevel to ensure that the hole is markedsymmetrically.

Mark through the inner slots of thetemplate and mark the position of thefixing holes for the support bracket.

3. Carefully cut the hole in the panel.

4. Drill a 6.0 mm diameter hole at each ofthe marked positions.

5. Position the hot and cold supply pipesbut do not connect to valve.

6. Remove the three building-in shroudsections and fix the support bracket andvalve unit in position using the two screws(supplied).

Pull the cavity wall seal through the hole.

7. Align the hot and cold supply and topoutlet pipes with the valve but do notsecure the pipes.

8. To complete the installation, followinstructions 12 to 23 of “Solid, Dry-lined, Stud Partition or Dry PartitionWall Structures”.

Spirit Level


Bend tabs outwardsand place spirit levelon tabs to level thetemplate

4 mm Minimum Depth

58 mmClearance

21 mmMaximumDepth

26

Reversed Inlet ConnectionMira Fino shower controls are supplied with inlet connections hot left, cold right andbottom outlet. The Fino Built-in is supplied with inlet connections hot left, cold right andtop outlet as standard.

The flow divertors on the exposed and built-in models are colour coded RED and BLUE.

To reverse the inlet position proceed as follows:

Fino Exposed

1. Using the 3 mm hexagonal wrench(supplied) remove the grub screws thathold the elbows in position.

2. Remove the elbows.

3. Remove the coloured flow divertors.

4. Refit the flow divertors in the oppositesides (refit the BLUE divertor whereyou removed the RED divertor fromand vice versa).

5. Refit the elbows and secure in positionwith the grub screws.

6. This completes the procedure for“Reversed Inlet Connection”.

Flow Divertor

Elbow

Fino Built-in

1. If fitted, carefully prise off the concealingplate assembly using the screwdriverslot at the bottom of the concealingplate.

2. Remove the coloured flow divertors,using the supplied quad key.

4. Refit the flow divertors in the oppositesides (refit the BLUE divertor whereyou removed the RED divertor fromand vice versa).

5. To refit the concealing plate assembly,follow instruction 23 of “Solid, Dry-lined, Stud Partition or Dry PartitionWall Structures”.

6. This completes the procedure.for“Reversed Inlet Connection”.

Concealing PlateAssembly

Flow Divertors

Filters

27

8 CommissioningSection

1. Maximum Temperature SettingAll Mira Fino shower controls are fully performance tested and the maximum temperaturehas been set under ideal installation conditions at the factory. The temperature stop is setto 41 ° C and depressing the override will increase the temperature by 5 ° C toapproximately 46 ° C. Site conditions and personal preference may make it necessary toreset these temperatures.

Note! An adequate supply of hot water at least 12 °C above the required temperaturemust be available for correct operation of the shower control.

Warning! Altering the position of thetemperature stop will reset the maximumtemperature obtainable with the overrideoperated.

1.1. Turn the temperature knob to themaximum temperature stop. Do notdepress the override button.

1.2. Turn the flow knob fully anticlockwise(maximum flow) and allow thetemperature to stabilize.

1.3. Measure the water temperature. Ifthe temperature is satisfactory thenno adjustment is needed. Ifadjustment is necessary continuewith the commissioning procedure.

1.4. Carefully pull off the temperatureknob.

1.5. Remove the temperature hubsecuring screw.

1.6. Use a screwdriver to carefully leveroff the temperature hub. Ensure thatthe pressure washer remains inposition.

Temperature HubSecuring Screw

Temperature Hub

28

1.7. Rotate the temperature spindle untilthe required temperature is obtained.Turn the spindle anticlockwise toincrease the temperature orclockwise to decrease thetemperature.

If resistance is felt DO NOT USEFORCE to rotate the spindle as thisis the maximum obtainabletemperature from the shower controlwith the available hot water supplytemperature. FORCE will DAMAGEthe internal components of thecartridge assembly.

1.8. Turn the flow knob off (fullyclockwise).

1.9. Refit the temperature hub makingsure that the arrow on the hub alignswith the cut out.

1.10. Refit the securing screw and thetemperature knob. Check that thetemperature knob can be rotatedfully in both directions.

1.11. Turn the flow knob fully anticlockwise(maximum flow) and check thetemperature is correct and theoverride functions correctly. Ifnecessary repeat the procedure untilthe correct temperature is achieved.

AnticlockwiseIncreaseTemperature

ClockwiseDecreaseTemperature

Temperature HubSecuring Screw

Temperature Hub

Temperature Knob

29

Temperature Override Button Disable

The Mira Fino incorporates a temperature override button that allows the user to overridethe preset maximum temperature. The following procedure can be used to disable theoverride button, limiting the maximum temperature available to the preset value. Thissetting is recommended for the young, the elderly, the infirm, or anyone inexperienced inthe correct operation of the controls.

1. Ensure the shower control is turned off.

2. Remove the temperature knob.

3. Disable the temperature override button as follows;

Fino B - on the rear of the temperature knob move the lever in the slot, this will eitherlock or release the button depending on how it had been previously set.

Fino - on the rear of the temperature knob move the small plastic lever to lock it in theindent. Placing the lever in the indent will lock the override button.

4. Install the temperature knob back on the valve.

TemperatureOverride Button




Fino B

Fino

Move anti-clockwise tounlock

Move the leverinto the indent willlock the overridebutton.

Move the leverout of the indentwill unlock theoverride button.

Move clockwiseto lock

30

1. Fino and Fino BThe Mira Fino incorporates a temperature override button that allows the user tooverride the preset maximum temperature. It is recommended that this facility isdisabled for the young, the elderly and the infirm, or anyone inexperienced in thecorrect operation of the controls. Refer to Section 8, Commissioning: "2.Temperature override button disable".

Section

9 Operation

Fino

1.1. Turn the flow lever until thedesired force of water is obtained.

Note! When the Fino is installedwith a fully modulating multipoint orcombination type gas water heater,the maintained mains waterpressure, and hence the flow, mustbe sufficient to keep the heaterignited. Therefore, it is important toensure that the flow knob is fullyopen to prevent variation in the hotwater supply temperature.

1.2. Turn the temperature (outer) knobanticlockwise for warmer water orclockwise for cooler water. Thepreset maximum temperature canbe adjusted as required to suitboth site conditions and the user'scomfort. Refer to Section 8,Commissioning: "1. Maximumtemperature setting".

Warning! Operation of the overridebutton will allow a shower temperatureabove the preset maximum.

1.3. To override the preset maximumtemperature depress the overridebutton and turn the temperatureknob fully anticlockwise.

Temperature Knob

Flow Lever

31

Fino B

1.1. Turn the flow lever anticlockwiseuntil the desired force of water isobtained.

Note! When the Fino is installedwith a fully modulating multipoint orcombination type gas water heater,the maintained mains waterpressure, and hence the flow, mustbe sufficient to keep the heaterignited. Therefore, it is important toensure that the flow knob is fullyopen to prevent variation in the hotwater supply temperature.

1.2. Turn the temperature knobanticlockwise for warmer water orclockwise for cooler water. Thepreset maximum temperature canbe adjusted as required to suitboth site conditions and the user'scomfort. Refer to Section 8,Commissioning: "1. Maximumtemperature setting".

Warning! Operation of the overridebutton will allow a shower temperatureabove the preset maximum.

1.3. To override the preset maximumtemperature depress the overridebutton and turn the temperatureknob fully anticlockwise.

Flow Lever

Temperature Knob

32

Section

10 Fault Diagnosis

Symptom Cause/Rectification

Normal function of thermostatic control when operatingconditions are unsatisfactory;a. Check strainers and inlet/outlet fittings for flow restriction.b. Make sure that minimum flow rate is sufficient for supply

conditions.c. Make sure that maintained inlet pressures are nominally

balanced and sufficient.d. Make sure that inlet temperature differentials are sufficient.e. (Subsequent to rectification of supply conditions) Check

thermostatic performance; renew thermostatic cartridge, ifnecessary.

2. Fluctuatingor reducedflow rate.

3. No flowfrom showercontroloutlet.

4. Blendtemperaturedrift.

Indicates operating conditions changed.a. Refer to symptom 2 above.b. Hot supply temperature fluctuation.c. Supply pressure fluctuation.

a. Check strainers and inlet/outlet fittings for blockage.b. Hot or cold supply failure; thermostat holding correct

shutdown function: rectify, and refer to symptom 2.eabove.

c. Flow control cartridge faulty. Check and renew if necessary.d. Check shower head is not blocked. Clean if necessary.

a. Inlet supplies reversed (see reversed inlets section).Check.

b. No hot water reaching shower control. Check.c. Check strainers and inlet fittings for blockage.d. Refer to symptom 5 below.e. Installation conditions continuously outside operating

parameters: refer to SPECIFICATION, and 2e below.

1. Only hot orcold waterfrom outlet.

5. Hot water incold supplyor viceversa.

Indicates checkvalves require maintenance, refer toMAINTENANCE.

33

Symptom Cause/Rectification

7. Waterleaking fromshowercontrol body.

Seal(s) worn or damaged.a. Obtain service pack and renew all seals.b. (If leak persists from around temperature spindle) Renew

thermostatic cartridge.

8. Flow knob ortemperatureknob stiff tooperate.

a. Impaired free movement of internal components. Renewthe appropriate cartridge.

b. Supply pressures too high. Fit pressure reducing valve.Refer to SPECIFICATIONS for acceptable operatingpressures.

c. Pressure build up. This may be due to domestic hot waterexpansion. Fit domestic hot water expansion vessel(available from your local stockist). If one already fitted, itmay be deflated and require repressurization.

6. Maximumblendtemperaturesetting toohot or toocool.

a. Indicates incorrect maximum temperature setting; referto COMMISSIONING.

b. As symptom 4 above.c. As symptom 5 above.

9. Drip fromhandsetspray plateassembly orbir sprayplate.

a. A small amount of water may be retained in the showerfitting after the shower control has been turned off. This isquite normal and should drain after a few minutes.Changing the angle of the shower fitting may vary thedraining time.

b. The ceramic plates within the shower control may bedefective. Renew the cartridge assembly. Check that thepressures are not in excess of the maximum for product(refer to sympton 8 above).

10.Fino noisyduringoperation.

a. The inlet supply pressures may be unbalanced. Fit a droptight PRV just after the incoming mains stopcock,effectively balancing the hot and cold supply pressures.Ideally set the PRV to 3.5 bar.

b. The inlet supply pressures may be high. The maximummaintained pressure should not exceed 5 bar. If greater, fita drop tight PRV installed as detailed above.

34

Mira products are precision engineered to provide satisfactory performance provided theyare installed and operated in accordance with the recommendations contained in thisguide.

The shower control is designed for the minimum of maintenance in normal domestic use.If a malfunction occurs then this will probably necessitate a complete cartridgereplacement.

Important! The cartridge contains no internally serviceable parts.

When installed in very hard water areas (above 200 p.p.m. temporary hardness) yourinstaller may advise the installation of a water treatment device to reduce the effects oflimescale formation in the heating appliance and spray plates.

CleaningMany household cleaners contain abrasives and chemical substances and should not beused for cleaning plated or plastic fittings. These finishes should be cleaned using a mildwashing up detergent or soap solution, and then wiped dry using a soft cloth.

The light golden colour finish is softer than the chrome finish and its abrasive resistancemuch less. When cleaning or using tools during maintenance extra care must be taken.

Cartridge Renewal (Temperature)Should the cartridge require renewal then the following procedure should be followed:

Important! Use only silicone based lubricants when reassembling.

Fino Exposed (Refer to Figure 1)

1. Turn off the water supplies and open the shower control to relieve the trapped waterpressure.

2. Carefully pull off the temperature knob.

3. Unscrew the headnut and pull out the cartridge.

4. Remove the 'C' washer and the headnut from the cartridge.

Important! When fitting a new cartridge make sure that you fit the correct hub.

5. Carefully fit the new cartridge into the valve body, making sure that it locates correctlyin the slots in the valve body.

6. Fit the headnut and secure in position with the 'C' washer.

7. The maximum temperature will now require resetting following the procedure “MaximumTemperature Setting” in the section Commissioning.

8. Refit the temperature knob.

11 MaintenanceSection

35

Temperature Cartridge Renewal - FinoFigure 1

Fino Built-in (Refer to Figure 2)


2. Using the screwdriver slot at the bottom of the concealing plate, carefully prise off theconcealing plate assembly.

3. Unscrew the headnut and pull out the cartridge.

4. Remove the 'C' washer and the headnut.

Important! When fitting a new cartridge make sure that you fit the correct hub.

5. Carefully fit the new cartridge into the valve body, making sure that it locates correctlyin the slots in the valve body.

6. Fit the headnut and secure in position with the 'C' washer.

7. The maximum temperature will now require resetting following the procedure “MaximumTemperature Setting” in the section Commissioning.

8. Refit the concealing plate assembly.

Temperature Knob

Wave Washer

Hub

'C' Washer

TemperatureCartridge

Screw

Headnut

36

Temperature Cartridge Renewal - Fino BFigure 2

Concealing PlateAssembly

Wave Washer

Hub

'C' Washer

TemperatureCartridge

Screw

Headnut

37

Checkvalve/Strainer RenewalShould the checkvalve/strainers require renewal or cleaning then the followingprocedure should be followed:




2. Remove the valve from the backplate by releasing, anticlockwise, the two recessedgrubscrews, using the 3 mm A/F hexagon wrench (supplied).

3. Unscrew the compression nuts and carefully release the valve from the wall.

4. Remove the grubscrew and remove the elbow.

5. Pull out the checkvalve housing and strainer from the elbow.

Note! If necessary, clean the checkvalve and the strainer. The checkvalves andstrainers may be cleaned under a jet of water, or renewed. Also ensure that there is nodebris/damage to the 'O' seals

6. Fit the strainer to the checkvalve housing.

7. Fit the checkvalve assembly into the elbow.

8. Fit the elbow into the valve body and tighten the grubscrew.

9. Locate the shower control body onto the backplate and inlet supply pipework, thensecure by tightening, clockwise, the two recessed grub screws, using the 3 mm A/Fhexagon wrench (supplied).

Tighten the compression nuts, using if necessary, a cloth to protect the plated surfaces.Ensure there are no leaks.

Checkvalve/Strainer Renewal - FinoFigure 3

CheckvalveHousing

Strainer

Checkvalve

Grubscrew

Elbow

CompressionNut

Seal

38




3. Using a 12 mm A/F hexagonal wrench or the quad key, unscrew and remove thecheckvalve housing.

Note! The strainer will be attached to the checkvalve housing.

4. Remove the strainer.

Note! If necessary, clean the checkvalve and the strainer. The checkvalves and strainersmay be cleaned under a jet of water, or renewed.

5. Fit the strainer onto the checkvalve housing using the clip feature to keep it in place.

6. Fit the checkvalve into the valve body and tighten.

7. To complete the installation, follow instruction 23 of “Solid, Dry-lined, Stud Partitionor Dry Partition Wall Structures”.

Checkvalve/Strainer Renewal - Fino BFigure 4

Concealing Plate Assembly

CheckvalveHousing

Strainer

Checkvalve

39

Flow Cartridge RenewalShould the flow cartridge require renewal or cleaning then the following procedureshould be followed:




2. Remove the hose from the lever retainer.

3. Unscrew and remove the lever retainer using a 12 mm A/F hexagonal key or the quadkey. Remove the flow control lever and the wave washer.

4. Undo the flow cartridge retaining nut using a 30 mm A/F spanner and pull out the flowcartridge.

Note! Before installing a new flow cartridge make sure that the 'O' seals are correctlyinstalled.

5. Fit the new flow cartridge into the valve body.

6. Fit the wave washer, the flow control lever and secure in place with the lever retainer.

7. Fit the hose to the lever retainer.

Flow Cartridge Renewal - FinoFigure 5

'O' Seal

Lever Retainer

Wave Washer

Flow Cartridge

Flow Control Lever

Valve Body

'O' Seal

Retaining Nut

40

Flow Cartridge Renewal - Fino BFigure 6





3. Remove the hub retaining screw and remove the hub.

4. Unscrew and remove the flow cartridge using a suitable spanner or socket.

Note! Before installing a new flow cartridge make sure that the 'O' seals are correctlyinstalled.

5. Fit the new flow cartridge into the valve body.

6. Fit the hub and secure in position with the hub retaining screw.

7. To complete the installation, follow instruction 23 of “Solid, Dry-lined, Stud Partitionor Dry Partition Wall Structures”.

Hub

Hub Retaining Screw

Concealing Plate Assembly

Flow Cartridge

41

Spare PartsSection12

Mira Fino Spare Parts List451.01 Seal Pack - components identified 'A'

451.02 Strainer Pack

451.03 Thermostatic Cartridge

451.04 Flow Cartridge Assembly

451.05 Check Valve Assembly

451.06 Inlet Connection Pack - chrome

451.07 Inlet Connection Pack - light gold

451.08 Inlet Elbow - chrome

451.09 Inlet Elbow - light gold

451.10 Body - chrome

451.11 Body - light golden

451.12 Temperature Knob - chrome

451.13 Temperature Knob - light golden

451.14 Flow Lever - chrome

451.15 Flow Lever - light golden

451.16 Backplate

451.17 Headnut

451.18 Component Pack - components identified 'B'

451.19 Screw Pack - components identified 'C'

451.24 Hub Pack

451.86 Installation Template

42

Mira Fino Spare Parts Diagram

451.02

451.03

451.03

451.04

451.05

451.06451.07

451.08451.09

451.10451.11

451.12451.13

451.14451.15

451.17

451.16

451.24

A

A

A

A

451.86

C

C

C

B

B

B

B

B

43

Mira Fino B Spare Parts List

451.01 Seal Pack - components identified 'A'

451.02 Strainer Pack

451.03 Thermostatic Cartridge

451.22 Check Valve Assemblies

451.23 Flow Cartridge

451.24 Hub Pack

451.34 Cavity Wall Seal

451.35 Concealing Plate Assembly - chrome

451.36 Concealing Plate Assembly - satin chrome

451.37 Concealing Plate Assembly - light gold

451.43 Support Bracket

451.44 Screw Pack - components identified 'B'

451.45 Building-in Shroud

451.46 Body and Support Bracket

44

Mira Fino B Spare Parts Diagram

451.02451.22

451.23

451.24

451.34

451.35451.36451.37

451.43

451.46

451.45

451.03

A

A

A

B

B

B

45

Notes

46

Notes

47

Notes

P3838/3 © Kohler Mira Limited, October 2004

Mira ShowersKohler Mira LtdCromwell Road,Cheltenham GL52 5EP.

Mira is a registered trade mark ofKohler Mira Limited.The company reserves the right toalter product specifications withoutnotice.

Section Customer ServiceGuarantee of Quality

Within the guarantee period we will resolve defects, free ofcharge, by repairing or replacing parts or modules as we maychoose.

Not covered by this guarantee:

Damage or defects arising from incorrect installation, improperuse or lack of maintenance, including build-up of limescale.

After Sales ServiceMira Showers guarantee products against any defect ofmaterials or workmanship for one year from the date ofpurchase (5 years for the NEW Mira Excel/Fino (valve only)).

What to do if something goes wrong

Should this not resolve the difficulty, simply contact ourCustomer Services who will give every assistance, and ifnecessary arrange for our service engineer to visit.

If later the performance of your shower declines, consult thismanual to see whether simple home maintenance is required.Please call our Customer Services to talk the difficulty through,request service under guarantee if applicable, or takeadvantage of our comprehensive After-Sales service.

Payment should be made directly to the Service Engineer/Agent, using Visa, Access or a cheque supported by abanker’s card.

England, Scotland & Wales

Mira Showers Customer ServicesTelephone: 01242 2628888.30am to 5pm Working days (4.30pm Fri)8.30 am to 12.30pm SaturdayE-mail: [email protected]: 01242 282595By Post: Cromwell Road

CheltenhamGloucester GL52 5EP

As part of our quality and training programme callsmay be recorded or monitored

For Customers in Northern IrelandWm H Leech & Son LtdTelephone: 028 9044 9257 – Mon to Fri 9 am-5pmFax: 028 9044 9234 – 24 hoursPost: Maryland Industrial Estate

Ballygowan RoadMoneyreagh, Co DownBT23 6BL

For Customers in Republic of IrelandModern Plant LtdTelephone: Dublin 01 4591344 - Mon to Fri 9am to 5pmFax: Dublin 01 4592329 – 24 hoursPost: Otter House

Naas RoadClondalkinDublin 22

To validate the guarantee, please return your completedregistration card.

To be free of charge, service work must only be undertakenby Mira Showers or our approved agents in Northern Irelandand Republic of Ireland.Service under this guarantee does not affect the expirydate. The guarantee on any exchanged parts or productends when the normal product guarantee period expires.

Damage or defects if the product is taken apart, repaired ormodified by any person not authorised by Mira Showers or ourapproved agents.

This guarantee is in addition to your statutory and otherlegal rights.

Before using your shower

Please take the time to read and understand the operatingand safety instructions detailed in this manual.

If when you first use your shower it doesn’t function correctly,first contact your installer to check that installation andcommissioning are satisfactory and in accordance with theinstructions in this manual. We are on-hand to offer you oryour installer any advice you may need.

Spare Parts

Our Customer Services Team is comprehensively trainedto provide every assistance you may need: help andadvice, spare parts or a service visit.

We maintain an extensive stock of spares, and aim tohave functional parts available for ten years from the dateof final manufacture of the product.

Spares can be purchased from approved stockists ormerchants (locations on request) or direct from CustomerServices.

Note! In the interests of safety, spares requiring exposureto mains voltages can only be sent to competent persons.

Spares direct will normally be despatched within twoworking days. Payment can be made by Visa or Accessat the time of ordering. Should payment by cheque bepreferred a pro-forma invoice will be sent.

Our Service Force is available to provide a quality service ata reasonable cost. You will have the assurance of a Miratrained engineer/agent, genuine Mira spares – and a 12month guarantee on the repair.

Service

To contact us:

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