PRODUCT MANUAL - Kohler Co.resources.kohler.com/plumbing/mira/pdf/P3020-1mira-915...liquid sealant....

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IMPORTANTInstaller: This Manual is the property of the customer

and must be retained with the product formaintenance and operational purposes.

915 SERIESPRODUCT MANUAL

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INTRODUCTION

Rada Thermostatic mixing valves are specified to meet the optimum standards ofsafety, comfort and economy as demanded by today’s users. All Rada productsare designed, manufactured and supported in accordance with accreditedBS EN ISO 9001:1994 Quality systems.

This manual covers all Rada 915 series shower controls manufactured fromOctober 1996.

A 1/2" thermostatic mixing valve employing the unique "thermoscopic"temperature sensor to provide water at safe, accurate temperatures forablutionary or process requirements. An adjustable maximum temperature stop isprovided which limits the temperature to the desired level.

Product rangeRada 915: Surface mounted control for connection to exposed

pipework.

Rada 915 Z: Surface mounted control for connection to concealedpipework.

Rada 915 B: Built-in shower control for connection to concealed pipework.

Rada 915 BAHT: Built-in shower control for connection to concealed pipework.

Rada 915 DV: Surface mounted control with a drain valve for connection toexposed pipework.

DESCRIPTION

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Rada products are precision-engineered and should give continued superior andsafe performance, provided:1. They are installed, commissioned, operated and maintained in accordance with

the recommendations given in this Manual.

2. Periodic attention is given, as necessary, to maintain the product in good functionalorder. Recommended guidelines are given in the MAINTENANCE section.

The function of a thermostatic mixing valve is to deliver water consistently at asafe temperature.

In keeping with every other mechanism, it cannot be considered as beingfunctionally infallible and as such, cannot totally replace the vigilance of nursing/supervisory staff where that is necessary.

Provided it is installed, commissioned, operated and maintained within theserecommendations, the risk of failure, if not eliminated, is reduced to the minimumachievable.

SAFETY : WARNINGS

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INDEXpage

SPECIFICATIONImportant Points 6Normal Operating Conditions 6Operating Parameters:

- Pressures/Flow Rates 7- Temperatures 7

Connections 7Standard Connections 8Dimensions 9

PACK CONTENTS915 Shower Control 13915 B and 915 BAHT Shower Control 14915 Z Shower Control 15915 DV Shower Control 16

INSTALLATIONGeneral 17Surface Mounted Shower Control (915 and 915 DV) 18Surface Mounted Shower Control (915 Z) 24Built-in Shower Control (915 B and 915 BAHT) 26

COMMISSIONINGMaximum Temperature 32Maximum Temperature Setting 32915 Drain Valve 33

OPERATION 34

FAULT DIAGNOSIS 35

MAINTENANCEGeneral 38Preventative/Precautionary Maintenance 38(Planned Maintenance Programmes)Maintenance Procedures 39

- Flow cartridge assembly 39- Radatherm cartridge assembly 41- Drain valve 44

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ACCESSORIES 46

SPARE PARTS915 Spare Parts List 48915 Spare Parts Diagram 49915 DV Spare Parts List 50915 DV Spare Parts Diagram 51915 Z Spare Parts List 52915 Z Spare Parts Diagram 53915 B and 915 BAHT Spare Parts List 54915 B and 915 BAHT Spare Parts Diagram 55915 H Conversion Kit Spare Parts List 56915 H Conversion Kit Spare Parts Diagram 56

CUSTOMER CARE Back Cover

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SPECIFICATION

Important Points:1. The installation, commissioning and maintenance of this product must be

carried out in accordance with instructions given in this Manual, and mustbe conducted by designated, qualified and competent personnel.

2. Installations must comply with all Local/National Water Supply AuthorityRegulations/Bye-laws, and Building and Plumbing (UK: BS6700) Regulations.

3. Rada products are precision-engineered and should give continued superior andsafe performance, provided:

- they are installed, commissioned, operated and maintained in accordance withthese recommendations

- periodic attention is given as necessary to maintain the product in good functionalorder. Recommended guidelines are given in the MAINTENANCE section.

4. WARNING: Continued use of this product in conditions outside the limits listed inthis section can severely affect the performance and reduce the effective servicelife, and can present potential risk to users.

5. Suitable for use with most modulating Instantaneous Gas Water Heaters. Forinformation on Multipoint Electric Water Heaters, refer to Data Sheet P1992. Forinformation on other specific applications or suitability, refer to Caradon MiraLimited, or Local Agent.

6. Disinfectants: In applications where system chemical disinfection is practised,chlorine can be used (calculated chlorine concentration of 50 mg/l [ppm]maximum in water, per one hour dwell time, at service interval frequency). Suchprocedures must be conducted strictly in accordance with the information suppliedwith the disinfectant and with all relevant Guidelines/Approved Codes of Practice.If in any doubt as to the suitability of chemical solutions, refer to Caradon MiraLimited, or Local Agent.

Normal Operating Conditions are considered as:

- inlet maintained pressures nominally balanced to within 10% of each otherduring flow

- a differential of approximately 50°C between the hot and cold inlettemperatures, and with differentials of 15 to 35°C between the blend settingand either supply

- daily usage of 1-6 hours

- installation and usage environment not subject to extremes of temperature,unauthorised tampering or wilful abuse.

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Operating Parameters: Pressures/Flow RatesFor optimum performance, maintained supply pressures should be nominally equal.

Recommended Maximum Flow Rate: 40 litres/minute.

Recommended Maximum Static Pressure: 8.0 bar.

Recommended Supply Pressure Range: 0.1 - 8.0 bar when used with Radafittings.

Recommended Maximum Pressure Loss Ratio 10:1 in favour of either supply.

Operating Parameters: TemperaturesOptimum performance is obtained when temperature differentials of 20°C or moreexist between blend and either supply. Blend control accuracy will begin to diminishat temperature differentials below 10°C.

Blend Temperature Range: between ambient cold and approximately 60°C,according to hot water supply temperature.

Optimum Thermostatic Control Range: 30 - 85°C. A high temperaturethermoscopic assembly is available for hot water temperatures up to 100°C

Recommended Minimum Cold Water Temperature: 1°C.

Recommended Maximum Hot Water Supply Temperature: 85°C.

Note: Thermostats fitted as standard can accept temporary temperature excursionsabove 85°C without damage, however operation at such elevated supplytemperatures is not recommended. For reasons of general safety, hot water storagetemperatures should ideally be maintained at between 60-65°C where servingablutionary applications.

Connections:Rada 915: Inlets: 15mm compression or 1/2" BSP male.

Outlets: 1/2" BSP male.

Rada 915 Z: Inlets: 1/2" BSP male using offset connectors.


Rada 915 B and 915 BAHT: Inlets: 1/2" BSP internal.

Outlets: 1/2" BSP internal.

Rada 915 DV: Inlets: 1/2" BSP male.


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Standard Connections are:

hot - left (marked red)

cold - right (marked blue)

Note! Should the supplies be reversed then the mixing valve will not be ableto control temperature.

All models can operate in any plane, and may be inverted if necessary forpipework layout convenience, provided hot and cold pipework is connected to theappropriate inlets (hot - red, cold - blue).

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Dimensions:915

96 mm

61 mm78 mm

143 mm

129 mm

245 mm

91 mm

36 mm

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915 B and 915 BAHT73 to 92 mm

62 mm

46 mm

124 mm

180 mm

80 mm

20 mm

46 mm 46 mm

73 to 92 mm

80 mm

204 mm

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915 Z

112 mm

70 mm

115 to 165 mm

245 mm

91 mm

50 mm

62 mm

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915 DV

96 mm

36 mm

61 mm

129 mm

245 mm

95 mm

185 mm30 mm

78 mm

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PACK CONTENTS

2 x Conical Connectors

2 x Olives

2 x 1/2" BSP InletConnector Nipples

2 x Gasket(with larger aperture)

1 x Elbow Plug

2 x Fibre Gaskets(with smaller aperture)

1 x Elbow Trim

1 x Outlet Elbow

2 x Fixing Screws

2 x Wall Plugs

1 x 3 mm A/FHexagon Wrench

1 x Nameplate

1 x Gasket(outlet nipple)

1 x Outlet Nipple

1 x 915 Shower Control

Tick the appropriate boxes to familiarize yourself with the part names and toconfirm that the parts are included.

915

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2 x Fixing Screws

1 x 915 B Shower Controlwith Building-in Shroud

2 x Retaining Screws

1 x Concealing Plate

1 x Seal (foam)

1 x ConcealingPlate Trim

1 x ConcealingPlate Insert

2 x Wall Plugs

915 B and 915 BAHT Tick the appropriate boxes to familiarize yourself with the part names and to

confirm that the parts are included.

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1 x Elbow Plug

1 x Nameplate

1 x Outlet Elbow

1 x Elbow Trim

1 x Outlet Nipple

2 x Offset Connectors

2 x Pipe Concealing Plates

1 x 915 Z Shower Control




915 Z Tick the appropriate boxes to familiarize yourself with the part names and to


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1 x Nameplate

2 x Fixing Screws

2 x Wall Plugs

1 x Outlet Nipple


1 x Outlet Elbow

1 x Elbow Plug


1 x Elbow Trim


2 x 1/2" BSP InletConnector Nipples

2 x Conical Connectors

2 x Olives

2 x Gaskets(with larger aperture)

1 x Drain Valve 1 x 915 DVShower Control

915 DV Tick the appropriate boxes to familiarize yourself with the part names and to


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INSTALLATIONGeneralInstallation must be carried out in accordance with these instructions, andmust be conducted by designated, qualified and competent personnel.

1. Before commencing, assure that the installation conditions comply with theinformation given in the SPECIFICATION section.

2. Care must be taken during installation to prevent any risk of injury or damage.

3. The mixing valve should be positioned for easy access during use andmaintenance. All routine maintenance procedures can be conducted with themixing valve body in place. For built in models, allow a minimum 150 mm frontalclearance to enable removal of the Radatherm Cartridge assembly and FlowCartridge assembly from the mixing valve body during maintenance. With exposedmodels allow 130 mm clearance to the side of the temperature control knob and100 mm clearance to the inside of the flow control knob.

4. Conveniently situated isolating valves must be provided for maintenance.

5. The use of supply line or zone strainers will reduce the need to remove debris ateach mixing valve point. The recommended maximum mesh aperture dimensionfor such strainers is 0.5 mm.

6. Pipework must be rigidly supported.

7. Pipework dead-legs must be kept to a minimum.

8. Supply pipework layout should be arranged to minimise the effect of other outletusage upon the maintained pressures at the mixing valve inlets.

9. Inlet and outlet threaded joint connections should be made with PTFE tape orliquid sealant. Do not use oil-based, non-setting jointing compounds.

10. To eliminate pipe debris it is essential that supply pipes are thoroughlyflushed through before connection to the mixing valve.

11. Determine whether the hot or cold water services will be connected to the showercontrol from the top (falling) or from the bottom (rising). The hot water servicemust always be connected to the hot inlet marked with a red indicator which isadjacent to the temperature control knob.

12. Before deciding the final positioning of the shower control, please bear in mindthe positioning of the shower control and shower fittings.

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13. For the 915 DV:

- The drain valve must be mounted vertically with the drain holes pointingdownwards. Clearance must be left under the valve to access the adjustingscrew and to service the valve.

- The maximum distance between the spray head and the drain valve must be1.5 m.

- The minimum head required between the base of the cold water cistern andthe drain valve must be 1.5 m.

- The valve must be installed over a 'wet' area.

- The valve can only be fitted after a flow closure device and must be fitted tothe lowest point in the system for correct drainage.

Surface Mounted Shower Control (915 and 915 DV)

Rising bottom inlet and falling top inlet supplies(Refer to Figures 1 and 2)

1. Remove the backplate with the 3 mm A/F hexagon wrench (supplied) byreleasing anti-clockwise the two recessed grub screws which locate against thespigots.

2. Mark the final fixing position on the wall surface using the backplate as a template.Mark through the backplate the position of the two smaller diagonal fixing holes.

3. Drill and suitably plug the two marked fixing holes. Secure the backplate to thewall by using the two fixing screws and wall plugs provided.

4. Locate the shower control onto the backplate and secure by tightening clockwisethe two recessed grub screws.

5. Remove and discard the two plastic inlet concealing caps.

6. Thoroughly flush the incoming hot and cold water supplies before finalconnection of the shower control.

7. Assemble the components of the 1/2" BSP straight couplings, (conicalconnectors) in the following sequence for each inlet:-

- With the flat face of the 1/2" BSP inlet connector nipple facing the showercontrols inlet, fit the gasket with the larger aperture against the shoulder ofthe nipple.

- Ensuring that the compression taper faces outermost, screw in clockwise,the 1/2" BSP inlet connector nipple using a 12 mm A/F hexagon wrench (notsupplied).

8. Slide the conical connector, then the olive, over the supply pipe. If necessary,smear liquid jointing on the supply pipe end and the outside of the olive.

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Installation (915) - Rising Bottom Inlet and Falling Top InletFigure 1

Rising Bottom Inlet Supply

Falling Top Inlet Supply

Supply Pipe

ConicalConnector

Olive1/2" BSP InletConnectorNipple

Gasket

Fibre Gasket

Elbow Trim

Outlet Elbow

Fibre Gasket

Elbow Plug

NameplateOutlet Nipple

Gasket

Shower Control

3 mm A/FHexagon Wrench

Wall Plug

Backplate

Fixing Screw

GrubScrew

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Installation (915 DV) - Falling Top InletFigure 2

Falling Top Inlet Supply

Supply Pipe

ConicalConnector

Olive

1/2" BSP InletConnectorNipple

Outlet Nipple

Gasket

Gasket

Outlet Elbow

Fibre Gasket

Elbow Plug

Nameplate

Fibre GasketElbow Trim

Drain Valve

Shower Control

Backplate

Fixing Screw


Wall Plug

GrubScrew

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9. Push the supply pipe into the opening of the 1/2" BSP inlet connector nipple,slide the olive and conical connector into place.

10. Carefully tighten clockwise the components using a cloth to protect the chromiumplated or coated surfaces. Turn on the water supplies and check for anyleaks!

11. Assemble the components of the outlet elbow in the order shown.

12. Determine the position of the outlet elbow in relation to the type of shower fittingused.

13. Tighten, clockwise the elbow plug using the 12 mm A/F hexagon wrench (notsupplied).

14. Finally snap fit the nameplate over the elbow plug and align.

Rising and falling back entry (Refer to Figures 3 and 4)

1. Follow the shower control installation procedure as for "Rising bottom inletand falling top inlet supplies": paragraphs 1 to 3 inclusive.

2. Using a spirit level or straight edge, mark the route of incoming hot and coldwater supply pipes at a distance of 129 mm centres.

3. Remove the plaster and brickwork to the required depth. During the final fixingof the shower control it is necessary that the incoming hot and cold supplypipes have 20 mm free movement to allow the spigots to locate into thebackplate. To maintain this free movement in a solid wall it is suggested thateach supply pipe is concealed into suitably sized conduit.

4. Temporarily fix the shower control to the backplate with the grub screws.

5. Measure the distance between the centre line of the shower control inlets andthe installed hot and cold water supply pipework, making allowance for theconnecting plumbing fittings.

6. Using this measurement cut to length the supply pipe.

7. Slide the pipe concealing plate over the supply pipe.

8. Thoroughly flush the incoming hot and cold water supply pipes beforeconnecting the shower control.

9. Using suitable plumbing fittings make the connection to the hot and cold watersupply pipes.

10. Make good the wall surface but allow sufficient clearance around the plumbingfittings to maintain the 20 mm free movement.

11. Remove and discard the two plastic inlet concealing caps.

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Installation (915) - Rising and Falling Back EntryFigure 3

Falling Back Entry Supply

Rising Back Entry Supply

Supply Pipe

Concealing Plate

ConicalConnector

Olive

Fibre Gasket

Elbow Trim

Outlet Elbow

Fibre Gasket

Elbow Plug

Nameplate

Gasket

Outlet Nipple

Backplate

Fixing Screw

Shower Control


129 mm

GrubScrew


GasketWall Plug

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Installation (915 DV) - Back EntryFigure 4

Outlet Nipple

Gasket

Outlet Elbow

Fibre Gasket

Elbow Plug

Nameplate


Drain Valve

Shower Control

Fixing Screw


Back Entry Supply

Supply Pipe

Concealing Plate

ConicalConnector

Gasket

Backplate

Olive


GrubScrew

Wall Plug

129 mm

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12. Assemble the components of the 1/2" BSP straight couplings, (conicalconnectors) in the following sequence for each inlet:-

- With the flat face of the 1/2" BSP inlet connector nipple facing the showercontrols inlet, fit the gasket with the larger aperture against the shoulder ofthe nipple.

- Ensuring that the compression taper faces outermost, screw in clockwise,the 1/2" inlet connector nipple using a 12 mm A/F hexagon wrench (notsupplied).

- Apply liquid jointing to the pipe end of the elbow inlet kit (optional accessory).

- Apply liquid jointing to the olive and then lightly screw, clockwise the conicalconnector and olive onto the 1/2" BSP inlet connector nipple. Ensure theolive is aligned to accept the pipe.

- Remove the shower control from the backplate, pull forward the two inletpipes and insert them into the conical connectors. Push the shower controlonto the backplate.

- Finally, carefully tighten clockwise the components using a cloth to protectthe chromium plated or coated surfaces.

13. Tighten, clockwise the two recessed backplate grub screws using a 3 mm A/Fhexagon wrench (supplied) to secure the shower control. Turn on the watersupplies and check for any leaks!

14. Follow the shower control installation procedure as for "Rising bottom inletand falling top inlet supplies": paragraphs 11 to 14 inclusive.

Surface Mounted Shower Control (915 Z)

Rising and falling back entry (Refer to Figure 5)

Important! The 915 Z is designed for connection to concealed pipework. Thesupplies must end with a 1/2" BSP internal thread within 3 mm (+ or - 3 mm) ofthe wall surface. Make sure that the inlet supply sockets are parallel to the wallface.1. Screw the offset connectors into the supply pipes. Make sure that the face of

the 1/2" male thread is 34 mm from the wall surface. If necessary, shorten the1/2" thread.

2. Screw the pipe concealing plates onto the offset connectors. Fit the gasketsonto the offset connectors.

3. Place the mixing valve into position and tighten the union nuts onto the offsetconnectors.

4. Assemble the components of the outlet elbow in the order shown.

5. Determine the position of the outlet elbow in relation to the type of shower fittingused. Tighten the elbow plug using a 12 mm A/F hexagon wrench.

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Installation (915 Z) - Rising and Falling Back EntryFigure 5

6. Finally snap fit the nameplate over the elbow plug and align.

Falling Back Entry Supply

Rising Back Entry Supply


Outlet Elbow

Fibre Gasket

Elbow Plug

Gasket

Outlet Nipple

Nameplate

GrubScrew


Shower Control

Bush

Connector

Nut

Pipe ConcealingPlate

OffsetConnector

Supply Pipe

Connector

115 to 165 mm

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Built-in Shower Control (915 B and 915 BAHT)

Solid or dry-lined wall structures (Refer to Figure 6)

1. The built-in shower control is designed to be concealed into a solid or dry-linedwall structure. A support bracket assembly is available which can be used to fixthe shower control into a shower cubicle, laminated panel, stud partition or drypartition wall.

2. The building-in depth (to the finished wall surface) is between 73 and 92 mm.The building-in depth dictates how much of the flow and temperature controlknob will be visible through the concealing plate when the installation iscompleted.

3. A building-in shroud is supplied, which protects the shower control duringplastering and provides a reference for the building-in depth when chasing outthe wall surface.

4. The shower control is not supplied with any inter-connecting pipework orplumbing fittings. Inlet and outlet threads are 1/2" BSP parallel to B.S. 2779.

5. Determine whether the hot or cold water services will be connected to the showercontrol from the top (falling) or from the bottom (rising).

6. Remove the plastic building-in shroud, and the three plastic inlet and outletconcealing caps. The two building-in shroud fixing screws should be screwedtemporarily into the base for use later.

7. Familiarise yourself with the hot and cold water inlet ports and outlet port. Theycan be identified as follows:-

HOT inlet port: Stamped HOT and colour coded REDCOLD inlet port: Stamped COLD and colour coded BLUE

OUTLET port: Stamped with an arrow and shower symbol on plastic building

-in shroud.

8. Determine the route for the incoming hot and cold water supply pipework. Theoutlet pipework to a flexible shower fitting must emerge above and to one sideof the shower control, to allow the hose to drape around the underside of theshower preventing the hose from interfering with the flow and temperaturecontrols.

9. Mark the wall surface for an opening measuring approximately 250 x 120 mm.Mark the route of the incoming and outgoing pipework services.

10. Remove the plaster and brickwork/dry-lining to the required depth of concealmentusing the building-in shroud as a guide.

Note! The depth of concealment must be such that the final wall surface (e.g.plaster and tiles etc.) finishes on the raised portion of the plastic building-inshroud.

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Installation (915 B and 915 BAHT) - Solid or Dry-lined Wall StructuresFigure 6

250 mm

120 mm

Support BracketAssembly (optional)

Wall Plug

Shower Control

Fixing Screws

Oultet Pipe

Foam Seal

Concealing Plate

ConcealingPlate Trim

RetainingScrew

FixingScrew

Washer

Fixing Screw

Building-inShroud

Supply Pipes

ConcealingPlate Insert

Shower Control

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11. Mark the final position in the wall chase of the two brass lugs located at thebase of the shower control body (If necessary, the support bracket assemblycan be used).

12. Drill and suitably plug the marked fixing holes.

13. Secure the shower control body with the fixing screws supplied.

14. Using liquid jointing, screw in the plumbing fittings (not supplied) to the inlet andoutlet ports of the shower control.


16. Make the connections to the incoming hot and cold water supply pipes andoutlet supply pipe. Turn on the water supplies and check the pipework forany leaks!

17. Refit the plastic building-in shroud over the shower control body and securewith the two shroud retaining screws.

18. Plaster and tile up to the sides of the plastic building-in shroud and when setremove the shroud, but retain the screws for use later.

19. To ensure that the supply pipework is able to maintain free movement in a solidwall it is suggested that each pipe is concealed into suitably sized conduit.

20. Fit the foam gasket over the control knobs. If the wall finish is uneven or hasheavily patterned tiles, additional sealing between the foam seal and wall maybe necessary to prevent water entering the wall structure.

21. Locate the small black cylindrical concealing plate insert into the chromeconcealing plate.

22. Fix the concealing plate to the shower control body using the two longer screwsused to retain the plastic building-in shroud.

23. Fit the concealing plate trim ensuring that the hot and cold direction indicatorsare adjacent to the temperature control knob.

Stud partition or dry partition wall structures (Refer to Figure 7)

1. The support bracket assembly has been designed to allow the shower controlto be installed into the front face of a stud partition wall. Installers may wish toconsider other options such as fabricating rear supports using wooden noggins,however, these methods of fixing are beyond the scope of this guide.

2. Follow the shower control installation procedure as for "Solid or dry-lined wallstructures": paragraphs 1 to 10 inclusive.

3. Mark the fixing position in the wall chase of the four larger holes in the flangesof the support bracket assembly.

4. Drill and suitably plug the four marked fixing holes.

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190 mm

Support BracketAssembly

FixingScrew

Shower Control

Fixing Screw

Washer

Building-inShroud

Fixing Screws

Foam Seal

Concealing Plate

RetainingScrew

ConcealingPlate Trim

ConcealingPlate Insert

Shower Control

95 mm

Installation (915 B and 915 BAHT) - Stud Partition orDry Partition Wall Structures

Figure 7

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5. Fix the shower control to the support bracket assembly with the screws, andwashers provided.

6. Secure the bracket with the screws and wall plugs provided.

7. Follow the shower control installation procedure as for "Solid or dry lined wallstructures": paragraphs 14 to 23 inclusive.

Shower cubicle or laminated panel (Refer to Figure 8)

1. The support bracket assembly can be used to fit the shower control into a showercubicle or laminated panel up to 20 mm thick.

2. The dimension from the bracket to the finished wall surface is between 73 and92 mm.

3. Follow the shower control installation procedure as for "Solid or dry-lined wallstructures": paragraphs 1 to 8 inclusive.

4. Mark out an opening in the panel using the concealing plate as a template. Thecut-line should be indented by at least 4 mm inside the marked line to ensurethe concealing plate covers the opening in the panel.

5. Using the support bracket assembly as a template, mark the position of the foursmaller fixing holes on the flanges of the bracket.

6. Drill the four fixing holes.

7. Fix the shower control to the support bracket assembly using the two largerscrews supplied.

8. Feed the shower control through the opening in the panel, fix the bracket to thepanel with the four remaining fixing screws and washers provided.


10. Using liquid jointing, screw the plumbing fittings (not supplied) to the inlet andoutlet ports of the shower control.

11. Make the connections to the incoming hot and cold water supply pipes andoutlet supply pipe. Turn on the water supplies and check the pipework forany leaks!

12. Follow the shower control installation procedure as for "Solid or dry lined wallstructures": paragraphs 17 to 23 inclusive.

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Installation (915 B and 915 BAHT) - Shower Cubicle or Laminated PanelFigure 8

64 mm

105 mm80 mm35 mm

4 Holes 4.5 mm Diameter

Shower Control

Supply Pipes

Fixing Screws

Outlet Pipe

Foam Seal

Concealing Plate

RetainingScrew

ConcealingPlate Insert Concealing

Plate Trim

32

Commissioning must be carried out in accordance with these instructions,and must be conducted by designated, qualified and competent personnel.

Maximum TemperatureThe maximum blend temperature obtainable by the user should be limited, to preventaccidental selection of a temperature that is too hot.

All Rada Thermoscopic mixing valves are fully performance tested individually, andthe maximum temperature is pre-set to approximately 45°C under ideal installationconditions at the factory.

Site conditions and personal preference may dictate that the maximum temperaturehas to be reset following installation.

Maximum Temperature Setting (Refer to Figure 9)

Make sure that an adequate supply of hot water is available at the hot inlet of themixing valve. The minimum temperature of the hot water must be at least 12°Cabove the desired blend, however during resetting this should be close to the typicalstorage maximum to offset the possibility of any blend shift due to fluctuating supplytemperatures.

Make sure that both inlet isolating valves are fully open.

Temperatures should always be measured using a thermometer with proven accuracy.

1. Prise off the concealing cap, remove the screw and washer and pull off thetemperature control knob.

COMMISSIONING

Maximum Temperature SettingFigure 9

Pressure Washer

HubConcealing Cap

Screw

Washer

Temperature Control KnobCirclip

Temperature Spindle

33

2. Remove the circlip, pull off the hub and remove the pressure washer.

3. Turn the flow control knob fully on.

4. Use the hub inverted to turn the temperature spindle until the required maximumtemperature is obtained at the discharge point, (turn clockwise to increase thetemperature, anti-clockwise to decrease the temperature).

When resistance is felt do not use force to turn the spindle any further, asthis can damage the internal parts.

5. Turn the flow control knob fully off.

6. Refit the pressure washer on the larger diameter of the temperature spindle, thenreplace the hub so that its lug is against the left hand stop on the body head nut,thus preventing any further clockwise movement. Refit the circlip.

7. Refit the temperature control knob so that number "8" is positioned in line withthe markings on the hot and cold direction indicators.

8. Refit the washer, screw and concealing cap.

9. Turn on the flow control knob and check that the maximum temperature setting iscorrect.

10. This completes the procedure for "Commissioning: Maximum temperaturesetting".

915 Drain Valve (DV)An adjusting screw is fitted in the base of the automatic drain valve and can be set tosuit individual site conditions.

The maximum distance between the drain valve and the spray head is 1.5 m. Theminimum distance between the base of the cold water cistern and the drain valve is1.5 m.

1. If the valve fails to drain after the flow closure device is closed, turn the adjustingscrew 1/2 a turn clockwise (to increase the spring pressure). If necessary, repeatthe adjustment.

2. If the valve fails to close when the flow is turned on, turn the adjusting screw1/2 a turn anti-clockwise (to decrease the spring pressure). If necessary, repeatthe adjustment.

Note! The adjusting screw has a locking patch and may be tight to turn. It hasapproximately five turns of movement.

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OPERATION

915, 915 Z, 915 B, 915 BAHT and 915DV (Refer to Figure 10)

1. Turn the flow control knob (unmarked) until the desired force of water is obtained.

Note! When the 915 is installed with a modulating multi-point or combination type gaswater heater, the maintained mains water pressure, and hence the flow through theheater must be sufficient to keep the burner unit in the heater ignited. Therefore, it isimportant to ensure that the flow control on the 915 is virtually fully open.

2. Turn the temperature control knob in the direction of the red arrow for warmerwater and in the direction of the blue arrow for cooler water, until the desiredtemperature of water is achieved.

Note! For safety reasons this product is fitted with a maximum temperature stop. Thissetting must be checked and adjusted as necessary to suit both site conditions anduser's comfort. Refer to the section COMMISIONING, Maximum TemperatureSetting.

915 Drain Valve (DV) Only1. When the pressure in the pipeline is increased (in excess of 0.15 bar) the clack

assembly is forced onto its seat against the action of the return spring and closesthe drain valve.

2. When the flow control (tap, ball valve etc.) is closed, the back pressure in thesystem reduces. Providing this is less than 0.15 bar the return spring will pushthe clack assembly off its seat, thus allowing the water in the system to drainaway.

==

--

+

-

+-

++

Flow ControlTemperature Control

OperationFigure 10

35

FAULT DIAGNOSIS

Symptom Cause/Rectification

Key for applicability columnA - Gravity fed showers.B - Gas heated showers.C - Unvented mains pressure showers.D - Mains pressurised, instantaneous hot water, heated from thermal storeshowers.

A B C D

Showerinsufficiently hot.

a. Maximum temperature incorrectly set. Resetmaximum temperature.

b. Heater not set on maximum hot water output.Consult heater manufacturers instructions.

c. Heater throttle flow rate set too high. Consultheater manufacturers instructions.

d. Flow rate too high. Fit 9 l/m flow regulatorbetween shower control and hose.

Showertemperature toohot.

Maximum temperature incorrectly set. Resetmaximum temperature.

Showertemperature toocold.

a. Hot water cylinder temperature set less than10°C above shower temperature. Adjust hotwater cylinder temperature.

b. Maximum temperature incorrectly set. Resetmaximum temperature.

Wide temperaturefluctuations fromshower when noother draw-off isbeing made.

Supply temperature variations to shower,especially hot water, caused by the heaterappliance cycling on and off, due to insufficientflow rate or insufficient water pressure.a. Fit high capacity spray plate to increase water

flow rate through heater.b. Increase supply pipe sizing to premises.c. Adjust heater throttle valve to increase flow

and prevent heater cycling.d. Refer to "Shower insufficiently hot".

36

Symptom Cause/Rectification A B C D

Blend temperatureunstable.

a. Flow rate below 3 l/m. Fit high capacity sprayplate. Raise cistern or fit pump.

b. Isolating valve in supply pipework partiallyclosed. Open valve.

c. Spray plate blocked. Clean spray plate.d. Temperature spindle assembly, piston

assembly, actuator or shuttle sticking. Cleancomponents and obtain service pack -thermoscopic.

Shower patterncollapses whenanother hot tap isturned on.

The heater is not capable of supplying severaloutlets at the same time. Reduce thesimultaneous demand.

Shower patterncollapses whenanother cold tap isturned on.

a. Property water supply pipe partially blockedor undersized. Contact Water Undertakers.

b. Property stop or servicing valve not fullyopen. Open valve.

c. Insufficient mains cold water pressure.Contact Water Undertakers.

No flow or low flowrate from showerhead.

a. Spray plate blocked. Clean spray plate.b. Isolating valve in supply pipework partially

closed. Open valve.c. Strainer screens blocked (located in

thermoscopic cartridge assembly). Cleanstrainers screens.

d. Supply pressure below minimum required.Raise cistern or fit pump.

a. Heater appliance not igniting. Insufficientmains pressure.

b. Hot isolating valve turned down. Open valve.c. Hot water run out. Wait until reheated.

No hot wateravailable.

Flow control knobstiff to operate.

Impaired free movement of piston assembly.Clean components obtain service pack -flow.

37

Symptom Cause/Rectification A B C D

Shower startswarm and thenruns cool.

a. Insufficient flow rate. Refer to "Widetemperature fluctuations".

b. Hot water supply temperature dropped. Waituntil reheated.

Continuousupwardtemperature creep.

a. Temperature spindle assembly, pistonassembly, actuator or shuttle sticking. Cleancomponents and obtain service pack -thermoscopic.

b. Thermoscopic unit ruptured. Renewthermoscopic unit.

Temperaturecontrol knob stiff tooperate.

Impaired free movement of temperature spindleor piston assembly, actuator or shuttle. Cleancomponents and obtain service pack -thermoscopic.

Leak fromtemperaturecontrol knob.

a. Body headnut seal defective. Obtain servicepack - thermoscopic.

b. Temperature piston seal assembly defective.Obtain service pack - thermoscopic.

Leak from flowcontrol knob.

a. Flow headnut assembly seal defective. obtainservice pack - flow.

Drip from showerhead.

a. 'O' seals on flow piston assembly defective.Obtain service pack - flow.

b. Flow cartridge assembly seals defective.Obtain service pack - flow.

c. A small amount of water may be retained inthe shower head after the shower control isturned off. This may drain off over a periodof minutes and should not be confused withcauses a. and b.

38

MAINTENANCEGeneralRada products are precision-engineered and should give continued superior andsafe performance, provided:

1. They are installed, commissioned, operated and maintained in accordance withour recommendations

2. Periodic attention is given as necessary to maintain the product in good functionalorder. Guidelines for frequency are given below.

Rada Service Engineers/Agents will call by prior arrangement, if required. ServiceContracts may be undertaken, subject to survey - details upon request.

Preventative/Precautionary Maintenance(Planned Maintenance Programmes)The frequency and extent of attention required will vary according to prevailing siteand operational conditions however, the following guideline schedule is suggestedto cover average duty and site conditions:

Six-monthlyBlend Temperature: check for correct blend setting and maximum pre-settemperature. Reset as necessary.

Performance: check blend stability against known datum (e.g. commissioning check)for an induced pressure or flow change. Renew the components of the thermostaticmechanism where necessary.

Function: check inlet pipework temperature for correct function of check valves,and maintain/renew as necessary. Check and clean strainer screens as appropriate.Lubricate accessible seals when necessary using silicone-only based lubricant.

Visual: check internal component condition. Inspect for debris, scale deposition,deformation, damage, corrosion, etc. Maintain or renew as necessary. Lubricateapplicable components using silicone-only based lubricant

Note! This range of mixing valves has been designed to be readily maintained,most particularly with regard to their Cartridge construction. In larger installationswith a number of mixing valves, it is good policy to maintain a small stock of spareCartridges so that a rolling programme of replacement can be undertaken as part ofa planned maintenance procedure. The advantages here are that, firstly, no mixingvalve or facility needs to be out of commission for more that the time it takes toexchange the Cartridge, and secondly, Cartridge refurbishment can be undertakenin the convenience of a workshop.

39

Maintenance ProceduresMaintenance must be carried out in accordance with these instructions, andmust be conducted by designated, qualified and competent personnel.

External surfaces may be wiped clean with a soft cloth, and if necessary, a mildwashing-up type detergent or soap solution can be used.

Warning: Many household and industrial cleaning products contain mild abrasivesand chemical concentrates, and should not be used on polished, chromed orplastic surfaces.

Should an internal malfunction occur then this will probably require componentrenewal. Components are precision-made, so care must be taken while servicing toavoid damage.When ordering spare parts, please state product type, i.e. Rada 915 series showercontrol and identify part name and number. Two service packs are available,Service Pack - Thermoscopic and Service Pack - Flow, containing all the sealsthat may be necessary for renewal during maintenance or servicing. Refer to theSPARE PARTS section.

Maintenance Procedures - Flow cartridge assemblyRemoval (Refer to Figure 11)

1. Isolate the incoming hot and cold water supplies to the shower control.

2. Open the flow control knob to release the back pressure in the plumbing system.

3. Remove the concealing cap situated on the end of the flow control knob, whichwill reveal a screw.

4. Remove the screw and flow control knob.

5. Gently prise off the circlip and remove the hub.

6. Remove the two retaining screws and the extension headnut (915 B and 915BAHT only).

7. Unclip the concealing plate trim (915 B and 915 BAHT only).

8. Remove the two retaining screws, the concealing plate and the foam seal

(915 B and 915 BAHT only).

9. Unscrew anti-clockwise the body headnut/port sleeve assembly and remove thecomplete flow cartridge assembly from the valve body.

Note! If the body headnut/port sleeve assembly has two grooves cut into it, thenthe connecting thread of the port sleeve has a left hand thread (unscrewclockwise). Earlier models without grooves have right hand threads (unscrewanti-clockwise).

40

RetainingScrews

Flow Cartridge Assembly - Disassembly/AssemblyFigure 11

Concealing Cap

Screw

Flow ControlKnob

Concealing PlateTrim

Retaining Screws

Concealing Plate

Foam Seal

ExtensionHeadnut

Circlip

Thrust Washer

Body Headnut

Flow SpindleAssembly

Piston Assembly

Body Headnut(port sleeve)

Valve Body

915 B and915 BAHT Only

915 B and 915 BAHT Only

Hub

41

10. Hold a wrench across the two flats of the body headnut (port sleeve) and aspanner across the flats of the body headnut. Unscrew the body headnut.

11. Push out the flow control piston assembly and separate the flow spindle assemblyfrom the piston assembly by turning clockwise. Remove the thrust washer.

Cleaning/Renewal of Parts12. Clean all the parts with a proprietary plastic kettle descalent in accordance with

the manufacturer's instructions.

Note! Care must be taken not to allow solvent to come into contact with bathroomsurfaces and fittings.

13. Examine all seals and replace as necessary, taking care not to damage theseal grooves. Lightly smear new seals and the thread of the flow spindle withthe silicon based lubricant supplied in the service pack.

Re-assembly14. Screw the flow spindle assembly into the piston assembly, place the thrust

washer over the flow spindle assembly, taking care not to damage the flowspindle assembly seal.

15. Push the flow control piston assembly through the body headnut, ensuring thatthe hexagon of the flow control piston assembly locates inside the body headnut,turn the spindle to the full anti-clockwise position. Fit and firmly tighten the bodyheadnut into the body headnut (port sleeve).

16. Refit the flow cartridge assembly into the valve body and tighten the bodyheadnut.

17. Refit the foam gasket, concealing plate, retaining screws and concealing platetrim, with the hot and cold direction indicators above the temperature cartridge(915 B and 915 BAHT only).

18. Refit the extension headnut and the retaining screws (915 B and 915 BAHTonly).

19. Refit the hub, circlip, flow control knob, screw and concealing cap.

Maintenance Procedures - Radatherm cartridgeassemblyRemoval (Refer to Figure 12)

1. Isolate the incoming hot and cold water supplies to the shower control or withoutisolating the hot and cold water supplies, turn the flow control knob to the 'off'position which will isolate the Radatherm cartridge assembly.

42

2. Remove the concealing cap situated on the end of the temperature controlknob, which will reveal a screw.

3. Remove the screw, washer and the temperature control knob.

4. Gently prise off the circlip, remove the plastic hub and the pressure washer.

5. Unscrew anti-clockwise the radatherm cartridge assembly and remove thecomplete assembly from the valve body.

Note! If the body headnut has two grooves cut into it, then the connecting threadof the port sleeve has a left hand thread (unscrew clockwise). Earlier modelswithout grooves have right hand threads (unscrew anti-clockwise).

6. Hold a wrench across the two flats of the body headnut (port sleeve) and aspanner across the flats of the body headnut. Unscrew the body headnut.

7. Separate the Radatherm capsule from the body headnut.

8. Push out the temperature control piston assembly from the body headnut.Unscrew the piston anti-clockwise and separate from the temperature spindleassembly.

9. Unscrew anti-clockwise the shuttle seat return spring. Separate the spring sleevefrom the shuttle seat and remove the spring.

10. Carefully push out the shuttle assembly (the plastic impeller is a clip fit into theshuttle. Do not remove). Remove both strainer screens.




12. Examine all seals and replace as necessary, taking care not to damage theseal grooves. Lightly smear new seals with the silicon based lubricant supplied.

Re-assembly13. Refit the strainer screens, positioning the joint over one of the solid sections of

the port sleeve, to prevent scale or debris passing through the screen joint andentering the cartridge.

14. Screw the temperature spindle assembly into the piston assembly and insertinto the body headnut.

15. Place the Radatherm capsule into the body headnut.

43

Radatherm Cartridge Assembly - Disassembly/AssemblyFigure 12

ConcealingCap

Washer

TemperatureControl Knob

Screw

Direction Indicator(915 & 915 DV only)

Body Headnut

Piston

Temperature SpindleAssembly

Circlip

Hub Pressure Washer

ShuttleSeat

SpringSleeve

Shuttle Assembly

ReturnSpring

RadathermCapsule

ValveBody

Body Headnut(port sleeve)

Drain Valve(915 DV only)

SquareSectionCorrect

RoundSection

Incorrect

44

Important! Make sure that you fit the correct return spring. The return spring hascoils that are square in section.

16. Tighten the body headnut firmly into the body headnut (port sleeve). Insert theshuttle assembly into the body headnut (port sleeve) with the plastic impeller ofthe shuttle towards the body headnut.

17. Insert the return spring into the spring sleeve, locate the lug on the spring sleevein the cut-out on the shuttle seat. Place the shuttle seat assembly into the openend of the shuttle. Align the three cut-outs in the spring sleeve with the webscontained inside the shuttle assembly. Compress the spring, and firmly screw inclockwise the shuttle seat into the body headnut (port sleeve).

18. Refit the Radatherm cartridge assembly into the shower control body and tighteninto place.

19. The maximum temperature setting will now require recalibrating. Refer toCOMMISSIONING.

Maintenance Procedures - Drain valve (915 DV only)Removal (Refer to Figure 13)

1. Place two 4mm diameter bars or two 4mm A/F hexagon drive keys into twoopposite holes in the seat. Unscrew the seat anticlockwise.

2. Remove the clack assembly and the return spring.




4. Examine all parts and replace as necessary. Lubricate seals with silicon lubricant.

Re-assembly5. Refit the clack assembly and the return spring into the body.

6. Fit the seat and tighten to a nominal torque of 5 Nm.

7. The operating pressure of the drain valve will now require resetting. Refer toCOMMISSIONING.

45

Drain Valve - Disassembly/AssemblyFigure 13

Body

Adjusting Screw

Seat

Return Spring

Clack Assembly

'O' Seal

Circlip

46

ACCESSORIES915 BH Conversion Kit: Extended lever control for those with restricted handuse. Available as an optional accessory.

DCV-H: An outlet double check valve, designed to prevent the backflow orbacksiphonage of potentially contaminated water, through shower controls which arefitted with a flexible hose as part of the outlet shower fitting. The inclusion of the MiraDCV-H will increase the required supply pressure typically by 0.1 bar. Available asan optional accessory.

915 B Support Bracket Assembly: Allows the shower control to be fitted into ashower cubicle, laminated panel, stud partition or dry partition wall. Available asan optional accessory.

915 H Conversion Kit: Extended lever control for those with restricted hand use.Available as an optional accessory.

915 Elbow Inlet Kit: For connecting surface mounted shower controls toconcealed supplies. Available as an optional accessory.

915 B Support Bracket Assembly

915 BH Conversion Kit DCV-H Outlet double check valve

47

915 H Conversion Kit

915 Elbow Inlet Kit

48

SPARE PARTS1. 915 Spare Parts ListPart No. Description000 08 1/2" Straight Coupling - chrome030 49 Outlet Elbow - chrome058 10 Spigot098 16 Strainer Screen106 01 Concealing Cap - black107 68 Concealing Cap - white237 20 Hub412 01 Radatherm Cartridge Assembly412 06 Radatherm Conversion Assembly - components identified 'D'412 09 Piston Assembly (radatherm)412 11 Radatherm Capsule and Return Spring - components identified 'E'515 66 Elbow Plug547 94 Seat Assembly552 01 Outlet Nipple - chrome615 40 Screw641 19 Gasket642 42 Washer807 26 Backplate Assembly - grey902 85 Flow Cartridge Assembly905 35 Piston Assembly (flow)911 34 Temperature Spindle Assembly911 35 Flow Spindle Assembly916 42 Temperature Knob Set - white916 48 Temperature Knob Set - white/grey916 53 Flow Knob Set - white916 57 Flow Knob Set - white/grey925 25 Shuttle Assembly928 39 Body Headnut/Port Sleeve Assembly (temperature) - components

identified 'F'928 40 Body Headnut/Port Sleeve Assembly (flow) - components identified 'G'931 73 Direction Indicator - white931 82 Nameplate Pack - components identified 'A'935 01 Service Pack - thermoscopic - components identified 'B'935 02 Service Pack - flow - components identified 'C'

49

2. 915 Spare Parts Diagram

106 01107 68

931 73

916 42916 48

237 20

911 34412 09

BB

412 01

412 01

098 16

B

552 01

641 19

030 49515 66

A

A

905 35

C

C

902 85

902 85

058 10

807 26

000 08

C

642 42615 40

D, E

916 53916 57

911 35

CC

D

B

615 40

925 25 D, E

B

237 20

547 94

F

106 01107 68

G

G

F

50

3. 915 DV Spare Parts ListPart No. Description000 08 1/2" Straight Coupling - chrome004 61 Body030 49 Outlet Elbow - chrome050 48 Return Spring058 10 Spigot098 16 Strainer Screen106 01 Concealing Cap - black107 68 Concealing Cap - white109 01 Drain Valve237 20 Hub412 01 Radatherm Cartridge Assembly412 06 Radatherm Conversion Assembly - components identified 'D'412 09 Piston Assembly (radatherm)412 11 Radatherm Capsule and Return Spring - components identified 'E'515 66 Elbow Plug547 77 Seat547 94 Seat Assembly552 01 Outlet Nipple - chrome573 36 Circlip613 27 Adjusting Screw615 40 Screw630 66 Seal641 19 Gasket642 42 Washer807 26 Backplate Assembly - grey902 85 Flow Cartridge Assembly905 35 Piston Assembly (flow)909 50 Clack Assembly911 34 Temperature Spindle Assembly911 35 Flow Spindle Assembly916 42 Temperature Knob Set - white916 48 Temperature Knob Set - white/grey916 53 Flow Knob Set - white916 57 Flow Knob Set - white/grey925 25 Shuttle Assembly928 39 Body Headnut/Port Sleeve Assembly (temperature) - components

identified 'F'928 40 Body Headnut/Port Sleeve Assembly (flow) - components identified 'G'931 73 Direction Indicator - white931 82 Nameplate Pack - components identified 'A'935 01 Service Pack - thermoscopic - components identified 'B'935 02 Service Pack - flow - components identified 'C'

51

106 01107 68

931 73

916 42916 48

237 20

911 34412 09

B

BB

412 01

412 01

098 16

B

905 35

G

902 85

807 26

000 08

916 53916 57

C

552 01

515 66

AA

641 19

911 35

C237 20

C

C

902 85

004 61

109 01

615 40642 42

615 40

4. 915 DV Spare Parts Diagram

058 10

D

030 49

909 50

050 48

613 27

547 77

630 66

537 36

925 25 D, E

C

D, E

547 94

641 19

106 01107 68F

G

F

52

5. 915 Z Spare Parts ListPart No. Description030 49 Outlet Elbow - chrome076 59 Pipe Concealing Plate098 16 Strainer Screen106 01 Concealing Cap - black107 68 Concealing Cap - white156 09 Bush237 20 Hub412 01 Radatherm Cartridge Assembly412 06 Radatherm Conversion Assembly - components identified 'D'412 09 Piston Assembly (radatherm)412 11 Radatherm Capsule and Return Spring - components identified 'E'515 66 Elbow Plug547 94 Seat Assembly552 01 Outlet Nipple - chrome555 14 Offset Connector555 30 Connector - right hand555 31 Connector - left hand615 40 Screw624 19 Nut630 36 Connector Seal634 61 Gasket641 19 Gasket642 42 Washer902 85 Flow Cartridge Assembly905 35 Piston Assembly (flow)911 34 Temperature Spindle Assembly911 35 Flow Spindle Assembly916 08 Flow Knob Set - black916 09 Flow Knob Set - crystal like916 67 Temperature Knob Set - black916 68 Temperature Knob Set - crystal like925 25 Shuttle Assembly928 39 Body Headnut/Port Sleeve Assembly (temperature) - components

identified 'F'928 40 Body Headnut/Port Sleeve Assembly (flow) - components identified 'G'931 73 Direction Indicator - white931 82 Nameplate Pack - components identified 'A'935 01 Service Pack -thermoscopic - components identified 'B'935 02 Service Pack - flow - components identified 'C'

53

C

902 85

412 01

412 01

A

624 19

916 08916 09

615 40

911 35

905 35

C

C

C

412 09

D

911 34

B

B

931 73

916 67916 68642 42

615 40

925 25

F

555 30

555 31

552 01

641 19

515 66

030 49

A237 20

6. 915 Z Spare Parts Diagram

D, E

D, E

902 85

C

237 20

098 16

B

547 94

555 14

076 59

634 61

634 61

106 01107 68

106 01107 68

F

G

G

156 09

156 09

630 36

630 36624 19

54

7. 915 B & 915 BAHT Spare Parts ListPart No. Description014 05 Body Sleeve - chrome076 58 Concealing Plate - BAHT079 16 Building-in Shroud098 16 Strainer Screen106 01 Concealing Cap - black106 08 Concealing Cap - black106 09 Concealing Cap - black - BAHT107 68 Concealing Cap - white130 53 Concealing Plate Trim - BAHT237 20 Hub312 21 Extension Headnut - chrome412 01 Radatherm Cartridge Assembly412 06 Radatherm Conversion Assembly - components identified 'C'412 09 Piston Assembly (radatherm)412 11 Radatherm Capsule and Return Spring - components identified 'D'547 94 Seat Assembly606 90 Retaining Screws615 40 Screw642 42 Washer805 41 Support Bracket Assembly902 86 Flow Cartridge Assembly905 35 Piston Assembly (flow)911 34 Temperature Spindle Assembly911 36 Flow Spindle Assembly916 08 Knob Pack (flow) - B - black916 09 Knob Pack (flow) - BAHT916 42 Temperature Knob Set - white916 48 Temperature Knob Set - white/grey916 53 Flow Knob Set - white916 57 Flow Knob Set - white/grey916 67 Knob Pack Temperature - B - black916 68 Knob Pack Temperature - BAHT925 25 Shuttle Assembly928 38 Body Headnut/Port Sleeve Assembly (flow) - components identified 'E'928 39 Body Headnut/Port Sleeve Assembly (temperature) - components

identified 'F'931 70 Concealing Plate Trim - chrome931 79 Concealing Plate Pack - chrome935 01 Service Pack - thermoscopic - components identified 'A'935 02 Service Pack - flow - components identified 'B'

55

8. 915 B & 915 BAHT Spare Parts Diagram

902 86

B

B

B

312 21

911 36

905 35

412 01

A

A

A

911 34

412 09

237 20

F

098 16

925 25

615 40

805 41

606 90

014 05

B079 16

C

931 79

931 70130 53

076 58C, D

C, D

B

237 20

916 08916 09

916 53916 57

642 42615 40

916 67916 68

916 42916 48

547 94

E

E

106 01106 08106 09107 68

F

56

9. 915 H Conversion Kit Spare Parts ListPart No. Description055 18 Backplate - white055 23 Backplate - black106 01 Concealing Cap - black107 68 Concealing Cap - white611 69 Screw615 40 Screw642 42 Washer916 61 Temperature Knob Set - white916 69 Flow Knob Set - white916 71 Temperature Knob Set - black916 72 Flow Control Knob - black

916 72

916 71

10. 915 H Conversion Kit Spare Parts Diagram

611 69

615 40642 42

055 18055 23

106 01107 68

642 42

106 01107 68

916 61

916 69

615 40

57

NOTES

58

NOTES

59

NOTES

60

NOTES

61

NOTES

62

NOTES

63

NOTES

64

Kohler Mira LimitedCromwell Road,Cheltenham, England,GL52 5EP, UK.Tel.: + 44 (0)1242 221221 Fax.: + 44 (0)1242 221925

CUSTOMER CARE

Rada is a registered trade mark of Kohler Mira Limited.The company reserves the right to alter product specificationswithout notice.

GuaranteeThis product is guaranteed against any defect of materials or workmanship for one year fromthe date of purchase, provided that the product has been installed correctly and used inaccordance with the instructions supplied.Any part found to be defective during the guarantee period will be replaced or repaired - atour option - without charge, provided that the product has been properly used and maintained.Routine cleaning and maintenance should be carried out in accordance with the instructionssupplied.The product should not be modified or repaired except by a person authorised by Rada.

Your statutory rights are in no way affected by this guarantee.

After Sales Service - how we can help youWe have a network of fully trained staff ready to provide assistance, should you experienceany difficulty operating your Rada equipment.

Spare PartsAll functional parts of Rada products are kept for up to ten years from the date of finalmanufacture.If during that period, our stock of a particular part is exhausted we will, as an alternative,provide an equivalent new product or part at a price equating to the cost of repair to the old,bearing in mind the age of the product.

Customer Care PolicyIf within a short time of installation the product does not function correctly, first check with theOperation and Maintenance Advice provided in this Manual to see if the difficulty can beovercome.Failing this, contact your installer to ensure that the product has been installed andcommissioned in full accord with our detailed installation instructions.If this does not resolve the difficulty, please ring your nearest Rada contact who will giveevery assistance and, if appropriate, arrange for the local Service Engineer or Agent to callon a mutually agreeable date.

Contact:

Kohler Mira Limited, August 2001P3020/1

PRODUCT MANUAL - Kohler Co.resources.kohler.com/plumbing/mira/pdf/P3020-1mira-915...liquid sealant....

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