Mira Miniduo Installation And User Manual

Thermostatic mixers
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Mira Miniduo
(†including Eco Models)
Thermostatic Mixers
Installation and User Guide
Please leave these instructions with the user
If you experience any difficulty with the installation or operation of your new shower, then
please refer to the Fault Diagnosis section, before contacting Kohler Mira Ltd.
Our telephone and fax numbers can be found in the back of this guide
1
.
1082138-W2-P

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Summary of Contents for Mira Miniduo

  • Page 1 If you experience any difficulty with the installation or operation of your new shower, then please refer to the Fault Diagnosis section, before contacting Kohler Mira Ltd. Our telephone and fax numbers can be found in the back of this guide...
  • Page 2 INTRODUCTION Thank you for purchasing a quality Mira product. To enjoy the full potential of your new product, please take time to read this guide thoroughly, having done so, keep it handy for future reference. The Mira Miniduo is a thermostatic mixer with separate on/off and temperature control.
  • Page 3: Safety Warnings

    Kohler Mira replacement parts. 9. DO NOT fit any form of outlet flow control. Only Mira recommended outlet fittings should be used. 10. DO NOT operate the temperature control rapidly, allow 10 – 15 seconds for the temperature to stabilise before use.
  • Page 4: Pack Contents

    PACK CONTENTS Exposed Thermostatic Mixers 1 x Thermostatic Mixing Valve Component Pack 2 x Concealing Plates 2 x Compression Nuts 2 x Olives 2 x Wall Plugs 2 x Fixing Screws 1 x 2.5 mm Hexagonal Key 1 x Flow Regulator (refer to section: ‘Flow Regulators’) 1 x ‘O’...
  • Page 5 Built-in Thermostatic Mixers 1 x Thermostatic Mixing Valve Component Pack 1 x Concealing Plate Assembly 3 x Compression Nuts 3 x Olives 5 x Wall Plugs 5 x Fixing Screws 1 x 2.5 mm Hexagonal Key 1 x Flow Regulator (refer to section: ‘Flow Regulators’) 1 x ‘O’...
  • Page 6: Specifications

    Flow regulators are for installation on high pressure systems (above 0.5 bar). The Mira Miniduo ECO EV & BIV have a flow regulator supplied for installation on high pressure systems above 2 bar. Note! On some combination boiler systems in order to achieve the minimum flow rate req’d to ignite the boiler the flow regulator may not be req’d.
  • Page 7: Thermostatic Shut-Down

    Standard connections are: hot - left, cold - right, outlet - bottom (EV models), top (BIV and BIR models). Flow Rates Typical Flow Rates Mira Miniduo with Mira L98D Shower Fittings (Typical Flow Rate without regulators fitted) Supply Pressure (bar) DIMENSIONS (All dimension in millimetres)
  • Page 8: Installation

    Miniduo with Adjustable Elbows Ø46 Pipe Centres at extremes of elbow adjustment INSTALLATION Suitable Plumbing Systems Gravity Fed: The thermostatic mixer must be fed from a cold water cistern (usually fitted in the loft space) and a hot water cylinder (usually fitted in the airing cupboard) providing nominally equal pressures.
  • Page 9 1. The Mixer must not be installed in an area where it may freeze. 2. For stud partitions alternative fixings may be required. 3. Isolating valves must be installed close to the Mixer for ease of maintenance. 4. Pipework must be rigidly supported and avoid any strain on the connections.
  • Page 10 6 mm Drill Note! Make sure that the ‘O’ seals are correctly fitted. Note! On Mira Minilite Eco models refit the flow regulator. Rotate the mixer 180°. The control knob(s) will have to be realigned, this can be completed in section: ‘Commissioning’.
  • Page 11 9. For Rear Entry Supplies Only: 15. Fit the shower fittings, refer to your shower fittings installation and user guide for Fit the concealing plates over the inlet instructions. pipes. Important! For high pressure systems (above Note! Apply silicone sealant to the back 0.5 bar) make sure that the flow regulator face of the flange.
  • Page 12 Built-in Thermostatic Mixers Adjustable 1. Carefully remove the concealing cap from the 11 mm Backplate control knob. 2. Unscrew the grubscrew using a 2.5 mm hexagonal key (supplied) and pull off the control knob(s). Note! The flow control knob must be in the off position in order to remove it.
  • Page 13 4. Determine the route for the hot and cold 6. Reversed Inlet Supplies Only: supply pipework and for the outlet pipework. Remove the sealing plug using the ‘O’ key When connecting to the BIV shower fittings it (supplied) or a 12 mm hexagonal key. is recommended that the outlet be positioned Remove the outlet nipple using the ‘O’...
  • Page 14 8. Carefully cut away the plasterboard and/or 12. Insert the wall plugs (supplied) and attach the brick work to a depth of between 56 and 76 mm mixer to the wall or to the timber noggin with from the finished wall surface. the screws provided.
  • Page 15 16. For solid wall installations or stud partition 21. Loosely attach the RAC backplate to the RAC installations without rear access go to wallplate, using the two backplate screws instruction 21. provided. For stud partition installations with access 22. Place the RAC backplate/wallplate assembly to the rear of the partition continue with over the outlet pipe with the arrow pointing instruction 17.
  • Page 16 Cardboard Building-in Shroud 29. Place the backplate over the outlet pipe with 32. Check that the second ‘O’ seal (black) is fitted the arrow pointing vertically up and tighten to the outside of the backplate nut. Press the the two backplate screws. Make sure that elbow onto the backplate, make sure that the the foam seal abuts the finished wall surface.
  • Page 17: Flow Regulators

    Important! The fitting of any flow regulator to Miniduo models will invalidate TMV2 compliance due to the minimum flow rate requirements. Do not fit flow regulators in TMV2 applications to these models.
  • Page 18 On Mira Miniduo ECO BIV See section ‘Valve Combinations’ for further information Mira Miniduo with Eco Showerhead BIR A 6.0 l/min flow reg is pre fitted in the Miniduo ECO BIR. See section ‘Valve Combinations’ for further information Washer...
  • Page 19: Operation

    4. If applicable unscrew the hub retaining screw with a 2.5 mm hexagonal key. Note! Do not remove the hub. Mira Miniduo and Mira Miniduo with Eco Showerhead thermostatic mixers have separate control levers for on/off and temperature. The control levers operate as shown below:...
  • Page 20: Fault Diagnosis

    FAULT DIAGNOSIS USER MAINTENANCE Symptom: • If you require a Mira trained service engineer or Only hot or cold water from the mixer outlet. agent, refer to section: ‘Customer Services’. • Outlet temperature too hot / too cold. Cause Rectification: Filter Replacement •...
  • Page 21 Filter ‘O’ key Adjustable Elbow Pack Chrome - 1.1663.012 The Mira Adjustable Elbow Pack allows the Mira ‘mini Filter Cap valves’ to be retro-fitted in place of an existing shower - no need to re-plumb or re-tile. 1082138-W2-P...
  • Page 22: Spare Parts

    Pipe Concealing Plates (x2) 1663.155 1663.158 Filter Pack (x2) Outlet Nipple 1663.165 Hub and Bearing Assembly 1663.163 (Miniduo) Control Lever Assembly 1663.340 Adjustable Inlet Nipple 1663.335 Adjustable Elbow Service Pack 1663.159 Seal Pack - components identified ‘A’ 1663.161 Component Pack - components identified ‘B’...
  • Page 23 1663.165 Hub and Retainer 1663.186 Assembly Concealing Plate Assembly 1595.035 Miniduo / Miniduo with Eco Showerhead RAC Shroud 1663.159 Seal Pack - components identified ‘A’ 1663.162 Screw Pack - components identified ‘C’ 1663.189 Component Pack - components 450.20 identified ‘D’...
  • Page 24: Customer Service

    Servicing must only be undertaken by us or our Spares and Accessories appointed representative. We hold the largest stocks of genuine Mira Note! If a service visit is required the product must spares and accessories.Contact us for a be fully installed and connected to services.

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