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Mira Combiforce 415, Installation And User Manual

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Mira Combiforce 415 Installation And User Manual Download Page 31

31

8.

Refit the control knob (with the override button at the bottom), control knob retaining
screw/plastic override stop and concealing cap.Please ensure the plastic override
stop is correctly seated.

Note!

 Do not overtighten the control knob retaining screw. Internal components may

be damaged if the screw is overtightened.

9.

This completes the procedure for 

Commissioning: "Adjustable Maximum

Temperature Setting”

.

Concealing
Cap

Control Knob

Plastic
Override
Stop

Control Knob
Retaining Screw

Adjustable
Temperature
Stop

Temperature
Override Button

To 

decrease 

the temperature, reposition the stop one serration 

clockwise

.

Repeat the check as necessary.

Indentations

Adjustable
Temperature
Stop

Summary of Contents for Combiforce 415

Page 1: ...PRESSURE BALANCED User Guide Installation and SHOWER CONTROL THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER ...

Page 2: ...ck Contents Checklist 5 4 Dimensions 7 5 Specifications 8 6 Installation Requirements 9 7 Installation 14 8 Commissioning 29 9 Operation 33 10 Fault Diagnosis 35 11 Maintenance 41 12 Spare Parts 46 13 Accessories 50 Guarantee Customer Care Policy and How to contact us Back cover ...

Page 3: ...ainspressurised instantaneoushotwaterheatedfromthermalstore systems Pumped systems Showeringtemperatureisadjustedbytheshowercontrol Theflowrateisdeterminedby thesupplypressuresavailableattheinlets andtheoutputratingoftheheaterappliance Shower controls covered by this guide Mira CombiForce 415 Surfacemountedpressurebalancedshowercontrolforconnectiontoexposedpipework for high pressure applications 1...

Page 4: ...r Regulations Byelaws Scotland Building Regulations or any particular regulations and practices specified by the local water supplier The installation should be carried out by a plumber or contractor who is registered or is a member of an association such as Institute of Plumbing IOP throughout the UK National Association of Plumbing Heating and Mechanical Services Contractors NAPH MSC England and...

Page 5: ...lives 2 x Compression Nuts 1 x Outlet Nipple 1 x 2 5 mm A F Hexagon Wrench 2 x 13 4 Fixing Screws 2 x Wallplugs 1 x O Seal Tick the appropriate boxes to familiarise yourself with the part names and to confirm that the parts are included 1 Mira CombiForce 415 Surface Mounted Shower Control 3 Pack Contents Checklist Section ...

Page 6: ... Mounting Bracket 1 x CombiForce 415 Shower Control with Building in Shroud 1 x Concealing Plate Circular Mounting Bracket and Foam Seal 3 x Compression Nuts 3 x Olives 2 x M4 x 30 mm Screws 2 x No 8 x 11 4 Fixing Screws 2 x Wallplugs 2 x M4 x 16 mm Screws 1 x 2 5 mm A F Hexagon Wrench 1 x Outlet Nipple 1 x O Seal 1 x Control Knob Cap ...

Page 7: ...ll dimensions are nominal and in millimetres Mira CombiForce 415B Mira CombiForce 415 Top Inlet Falling Supplies Bottom Inlet Rising Supplies 153 Ø56 Back Inlet Supplies Ø92 35 35 132 A F 135 Ø163 188 5 135 92 A F Ø76 57 to 74 ...

Page 8: ...old water supply temperatures MUST remain relatively constant Maximum hot water temperature 85 C Ideally the hot water temperature should never exceed 65 C A water temperature of 60 C is considered sufficient to meet all normal requirements and will minimize the deposition of scale in hard water areas Connections Inlet 15 mm Compression or 1 2 BSP male CombiForce 415 15 mm Compression CombiForce 4...

Page 9: ...ultipointorcombinationboilerabove5bar maintainedpressure apressurereducingvalvewillbenecessary Forinformation onmeasuringsystempressuresrefertoInstallationRequirements Measuring SystemPressures Forfurtherinformationonpressurereducingvalvesconsult your local plumbing stockist 4 Supply pipes MUST be flushed to clear debris before connecting the shower control 5 Conveniently situated isolating valves...

Page 10: ...e gas flow rate to the burner An expansion vessel MUST be fitted and regularly maintained if any form of backflowpreventiondeviceisfitted e g non returnvalve PRV Thiswillensure that excess expansion or pulse pressures do not damage the product or the plumbing system The expansion vessel may already be fitted within the boiler check with the manufacturer and is in addition to the normally larger ce...

Page 11: ...led 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 be necessary to fit an additional drop tight pressure reducing valve when the mains pressure is over 5 bar The drop tight pressure reducing valve must be set at the same value as...

Page 12: ... g non return valve PRV This will ensure that excess expansion or pulse pressures do not damage the product or the plumbing system The expansion vessel may already be fitted externally or internally within the thermal store check with thermal store manufacturer COLD HOT Figure 3 4 Pumped showers inlet pumps The shower can be installed with an inlet pump twin impeller The pump MUST be located on th...

Page 13: ...to a tap drawing from one of the proposed feed pipes and the outlet from the device in the off position the tap is turned on and the static pressure noted 3 To measure maintained pressure Refer to Figure 5 The pressure testing device is connected as above the taps turned on and the outlet from the device opened until a flow of around 5 l min is obtained this is easily done by timing the flow into ...

Page 14: ...her the hot or cold water services will be connected to the shower control from the bottom rising or from the top falling 7 Installation Section FallingSupplies Rising Supplies 25 mm Minimum Spill over Level Hose Retaining Ring Mira CombiForce 415 Surface Mounted Shower Control Rising or Falling Inlet Supplies Note The Mira CombiForce 415 is supplied with inlet connections hot left cold right and ...

Page 15: ...e no buried cables or pipes in the wall before drilling 4 Drill the two marked fixing holes and fit the wallplugs provided Secure the backplate to the wall with the two No 8 x 13 4 fixing screws Note Screwswithlargerheadswillfoul the shower control body 5 Thoroughly flush the incoming hot and cold water supplies before connecting the shower control 6 Release anticlockwise the two grub screws that ...

Page 16: ...s 9 Assemble the components of the inlet connector compression fittings in the following sequence for each inlet 9 1 Place the fibre gasket against the shoulder of the 1 2 BSP inlet connector nipple 9 2 Screw clockwise the 1 2 BSP connector nipple into the elbow ensuring that the compression taper faces uppermost using a 12 mm A F hexagonwrench notsupplied Rising Supplies FallingSupplies Connector...

Page 17: ...ide the olive and compression nut into place 9 5 Finally carefully tighten clockwise the compression nut If necessary use a cloth to protect the plated surfaces 10 Fit the O seal to the tapered end of the outletnippleandscrewitintotheshower control outlet using a 12 mm A F hexagonwrench notsupplied Thiswill leave the flat face for connection to the showerhose 11 This completes the installation of ...

Page 18: ...oncealing plates fouling on the plumbingelbows 4 Install the hot and cold water supply pipework ensuring that the pipe ends emergefromthewallsurfaceat153mm centres and project from the finished wall surface by 13 mm Allow for two circular recesses measuring 32 mm diameter x 10 mm depth to accept the two pipework concealing plates 5 Make good the wall surface Fit the pipework concealing plates over...

Page 19: ...ercontrolbodyontothe backplate and inlet supply pipework then secure by tightening clockwise thetworecessedgrubscrews usingthe 2 5mmA Fhexagonwrench supplied Tighten the compression nuts using if necessary a cloth to protect the plated surfaces Turnonthewatersuppliesandcheck for any leaks 10 Fit the O seal to the tapered end of the outletnippleandscrewitintotheshower controloutletusinga12mmA Fhexa...

Page 20: ...racket assembly whichcanbeusedtoinstalltheshowerinto a solid dry lined stud partition or dry partition wall structure shower cubicle or laminated panel Installers may wish to consider other options such as fabricating rear supports using wooden noggins however thesemethodsoffixingarebeyond the scope of this guide A building in shroud is supplied which protects the shower control during plastering ...

Page 21: ...m building in shroud retaining screws should be screwed temporarily into the base of the shower control for use later 3 Familiarise yourself with the hot and cold water inlet ports and outlet port They can be identified as follows The Mira CombiForce 415B is supplied with inlet connections hot left cold right and top outlet as standard Tochangethepositionoftheoutletrefer to Reversed Outlet Connect...

Page 22: ...final position on the wall of the twolargerouterdiameterfixingholesin theflangesofthewallmountingbracket This bracket must be fixed at 45 7 Drill and suitably plug the two marked fixing holes 8 Thoroughly flush the incoming hot and cold water supply pipes before connecting the shower control 9 Fix the shower control to the wall mountingbracketusingthetwoM4x16 mm screws provided 10 Install the show...

Page 23: ...n Locate the hexagontowardstheshower control outlet port Screw the nipple clockwise into the outlet port using a 12 mm A F hexagonwrench notsupplied 12 2 Slide the compression nut then the olive over the pipe end If necessary sparingly smear liquid jointing on the pipe end 12 3 Insert pipe end into the opening of the outlet nipple then slide the olive and compression nut into place 12 4 Finally ca...

Page 24: ... the showercontrolbodyusingthetwoM5x 50mmscrewsusedtoretaintheplastic building inshroud Note The bracket has been designed withsemicircularknockoutswhichmay needtoberelievedtoaccommodatethe supply pipework under minimum building indepthconditions 18 Push the concealing plate firmly over the circular mounting bracket until it locates on the four clips 19 This completes the installation of the MiraC...

Page 25: ...er over the fixings with plaster and tiles The building in depth for the integral wall mounting bracket assembly is 58 mm The thickness of plaster and tileswhichconcealtheintegralwallmountingbracketassemblyflangesmustbebetween 6 and 23 mm 230 134 110 146 214 53 43 67 92 A F 12 38 Wall Mounting Bracket Backplate Ø101 1 Follow the shower control installation procedure as for Solid Dry lined Stud par...

Page 26: ...tition Wall Structures instructions 1 to 4 inclusive 2 Cutacircularholeinthepanelmeasuring 124 mm in diameter 3 Using the wall mounting bracket as a template mark the position of the two smaller diameter fixing holes on the flangesofthebracket Theseshouldbe at an angle of 45 4 Drill the two fixing holes 5 Fix the shower control to the wall mountingbracketusingthetwoM4x16 mm screws provided 6 Feed ...

Page 27: ...etheD shapedhubfittedtothespindle Rotatethespindleonefullturn 360o and refit the hub 4 Remove the adjustable temperature stop and turn over Make sure that the Maxo C with the indentations side is uppermost Adjust the maximum temperature stop refertoCommissioning 5 Refitthecontrolknobassembly withtheoverridebuttonatthebottom andturnthe knob fully clockwise to the shut off position 6 This completes ...

Page 28: ...then the hot and cold water supplies have been reversed To correct reversed hot and cold inlet supplies proceed as follows 1 Prise off the concealing cap remove the control knob retaining screw plastic temperature override stop and the control knob 2 Remove the hub Turn the spindle one full turn 360o Refit the hub 3 Refit the control knob with the override button at the bottom the control knob ret...

Page 29: ...bar Additional benefits may be obtained by fitting the pressure reducing valve after the premises internal stop valve drain valve and if fitted outside tap The valve should be correctly sized for the duty 4 If the minimum modulating output of the heater appliance exceeds 14 kW with a reducing hot flow rate then the maintained minimum supply pressure will need to beincreased Thisistokeeptheflowrate...

Page 30: ...uatesupplyofhot waterisavailableinexcessofthatrequiredfromtheshowercontrol Turnthecontrolknob fullyanticlockwise Checkthetemperatureatthedischargepoint allowhotwatertoreach the shower If incorrect adjust the temperature as follows 1 Turn the control knob anticlockwise until the desired maximum temperature is achieved It may be necessary to press the override button and continue to rotate anticlock...

Page 31: ...ew Internalcomponentsmay be damaged if the screw is overtightened 9 This completes the procedure for Commissioning Adjustable Maximum Temperature Setting Concealing Cap Control Knob Plastic Override Stop Control Knob Retaining Screw Adjustable Temperature Stop Temperature Override Button To decrease the temperature reposition the stop one serration clockwise Repeat the check as necessary Indentati...

Page 32: ...quence will allow the installer to disable the temperature override button if required 1 Ensure the shower control is turned off Remove the concealing cap 2 Locate the plastic temperature override stop 3 Pull out the temperature override stop and reposition it in the slot adjacent to the redtemperatureoverridebutton 4 Reversing the above procedure will enable the temperature override button moveme...

Page 33: ...ature Theflowrateisdeterminedby the supply pressures at the shower control inlets or by the effective output power of the heater appliance Flow rates for gas heater appliances can vary typically between 8 l min winter and 15 l min summer 2 The control knob is fitted with a button which allows you to override the maximum temperature stop This can be used when the initial hot water supply temperatur...

Page 34: ...ic shower control and does not sense supply temperature variations Therefore inlet water temperatures especially the hot must remain relatively constant Equal Hot and Cold Pressure The diaphragm is in the centre Low Hot and High Cold Pressure Diaphragm deflects towards hot inlet and restricts cold entry Cold Water Pressure Loss Diaphragm moves to close hot inlet High Hot and Low Cold Pressure Diap...

Page 35: ...t Widetemperature fluctuations from showerwhenno other draw off is beingmade a Maximum temperature incorrectly set Resetadjustable maximum temperature b Heater not set on maximum hot c Flow rate still too high Consultheater instructions or contact a CORGIregistered installer Fit 9 l min flow regulator betweenshowercontrol and hose Contact your local water supplier or a CORGI registeredinstaller d ...

Page 36: ...nt mains cold water pressure Hot and cold water supplies have been connected in reverse Adjustable maximum temperatureincorrectly set a Inlet strainer blockedcreating an excessive imbalance in inlet pressures Inlet check valve faulty Contact the local water supplier or your installer Contact the local water supplier or your installer Refer to the section Installation Reversed Inlet Supplies Refer ...

Page 37: ...dropped a Pipeworknot flushedbefore connectingshower control Internal O sealsdamaged b Cartridgeorinlet strainer O seals damaged No hot water available Shower starts warm and then runs cool Showercontrol cannot be shut off No flow or low flow fromshowerhead a Supply stop valve turned down or off b Inlet Strainers blocked c Hose or handset blocked Open valve Cleanorrenew Clear blockage If necessary...

Page 38: ...cability column A Instantaneous gas heated showers B Unvented mains pressure showers C Mains pressurised instantaneous hot water heated from thermal store showers Shower insufficiently hot Widetemperature fluctuations from showerwhenno other draw off is beingmade a Maximum temperature incorrectly set Resetadjustable maximum temperature b Heater not set on maximum hot c Flow rate still too high Con...

Page 39: ...ater supplies have been connected in reverse Adjustable maximum temperatureincorrectly set a Inlet strainer blockedcreating an excessive imbalance in inlet pressures Inlet check valve faulty Contact the local water supplier or increase supply pipe size to premises Contact the local water supplier or increase supply pipe size to premises Refer to the section Installation Reversed Inlet Supplies Ref...

Page 40: ...ure dropped a Pipeworknot flushedbefore connectingshower control Internal O sealsdamaged b Cartridgeorinlet strainer O seals damaged No hot water available Shower starts warm and then runs cool Showercontrol cannot be shut off No flow or low flow fromshowerhead a Supply stop valve turned down or off b Inlet Strainers blocked c Hose or handset blocked Open valve Cleanorrenew Clear blockage If neces...

Page 41: ... finish is softer than the chrome finish and its abrasive resistance much less When cleaning or using tools during maintenance extra care must be taken Component Interchangeability Some parts of the latest Mira CombiForce 415 are not interchangeable with earlier models of the Mira range Spare parts where different are available for earlier models Refer to the specific IO M guide supplied with your...

Page 42: ...artridge fully into the shower control body Ensure the two plastic pins locate in the brass body recess Makesurethatthearrowontheendfaceofthecartridgepointstotheletter C refer to Figure 2 Important Ensurethatthetwoinletsealsarewell lubricatedandcorrectlylocated before refitting the cartridge 8 Ensure that the cover O seal is correctly located on the cover 9 Refitthecover andsecurewiththefourcoverr...

Page 43: ...rride button at the bottom Rotate the control knob anticlockwise until the desired temperature is achieved Note the final position of the override button e g 11 O clock Rotate the control knob to the off position 14 The maximum temperature will now require resetting following the procedure Adjustable Maximum Temperature Setting in the section Commissioning Figure 2 ...

Page 44: ...check for damage renew if necessary Follow the procedure detailed in Inlet Strainer Cleaning instructions 2 to 4 4 Push the cartridge fully into the shower control body Ensure the two plastic pins locate in the brass body recess Important Ensurethatthetwoinletsealsarewell lubricatedandcorrectlylocated before refitting the cartridge 5 Check the cartridge spindle O seal fitted in the cover for signs...

Page 45: ... units from the valve body 3 Cleanthe completestrainerunitunderrunningwater Checkfordamageandrenew the whole unit if necessary 4 Refit the strainer units The strainer units can only be fitted one way refer to Figure4 Important Ensure the O seals on the inlet strainers are well lubricated before refitting 5 Follow the procedure detailed in Cartridge Renewal instructions 7 to 14 to reassemble the sh...

Page 46: ...HexagonWrench 617 18 CombiForce 415 Body including strainers 617 20 Shroud Pack CombiForce 415 white 617 21 Shroud Pack CombiForce 415 chrome 617 22 Control Knob Assembly CombiForce 415 white 617 23 Control Knob Assembly CombiForce 415 chrome 617 29 Shroud Pack CombiForce 415 white light golden 802 27 Inlet Elbow Assembly chrome 802 33 Inlet Elbow Assembly light golden 902 55 CartridgeAssembly 932...

Page 47: ...47 575 12 617 20 617 21 617 29 280 07 280 15 553 35 553 54 802 33 902 55 012 12 802 27 617 22 617 23 617 18 A A 932 25 A A A A A A CombiForce415SparePartsDiagram A A 617 20 617 21 617 29 242 55 ...

Page 48: ...t golden 555 67 OutletNipple 575 12 2 5mmHexagonWrench 617 19 CombiForce 415B Body including strainers 617 22 Control Knob Assembly white 617 23 Control Knob Assembly chrome 807 28 Backplate Assembly components identified B 902 55 CartridgeAssembly 932 04 Inlet Compression Fitting 932 25 Hub Pack 936 22 CombiForce 415 Service Pack components identified A 937 59 Screw Pack components identified C ...

Page 49: ...49 CombiForce415BSparePartsDiagram 617 22 617 23 119 85 B 555 67 932 04 617 19 012 12 902 55 410 53 410 54 410 55 A A A 932 25 A A A A C C B C B A A 242 55 575 12 ...

Page 50: ...ailable as an optional accessory from your Mira stockist DCV H Outlet double check valve 9 litre min Outlet Flow Regulator Part No 146 84 Designed to limit the flow rate in high pressure installations If the maximum obtainable water temperature at the shower outlet is not sufficiently hot fitting a flow regulator may increase the outlet water temperature and may also reduce the shower force at the...

Page 51: ...51 Appendix Notes ...

Page 52: ...wn 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 NaasRoad Clondalkin Dublin22 To validate the guarantee please return your completed registration card To be free of charge service work must only be undertaken by Mira Showers or our approved agents in Northern Ireland and Republic of Ir...

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