Mira discovery And diverter thermostatic mixer Shower Installation and User Guide These instructions are to be left with the user 1
Contents Introduction Patents and Design Registration Introduction 2 Safety Warnings 3 Pack Contents 4 Specifications 5 Pressures 5 Temperatures 5 Thermostatic Shut-down 5 Connections 5 Flow Rates 5 Installation Methods The Mira Discovery and Diverter Thermostatic Mixer is a Thermostatic Shower Control that is suitable for connection to concealed pipework. It has independent selection for temperature and an on/off flow control diverts between two seperate outlets.
Patents and Design Registration 8. The water supplies to this product must be isolated if the product is not to be used for a long period of time. If the product or pipework is at risk of freezing during this period they should also be drained of water. 9. Anyone who may have difficulty understanding or operating the controls of any shower should be attended whilst showering.
Pack Contents Tick the appropriate boxes to familiarise yourself with the part names and to confirm that all of the parts are included.
Flow Rates Specifications Typical flow rates on high pressure systems (1 to 5 Bar), mixer valve and divertor only with open outlet and 12 L/Min flow regulator fitted. Note! Additional pressure losses may occur depending on your outlet configuration and fittings used. Typical flow rates on low pressure systems (0.1 to 1 Bar) mixer valve and divertor only with open outlet.
Installation Methods Rear Fixing For installation into a Solid Wall or Stud Partition using the Rear Fixing Points, go to section: ‘Installation, Solid Wall or Stud Partition Using Rear Mountings’. Behind Panel Fixing For installation behind a Laminated Panel using the Securing Brackets, go to section: ‘Installation, Panel Fixing using Securing Brackets - Mounting off Rear Face’.
5. Do not install the product in a position in which service access is restricted. 6. Pipework dead-legs should be kept to a minimum. 7. Decide on a suitable position for the Mixer and outlet fittings. If you are installing variable shower fitttings then they must provide a minimum gap of 25 mm between the spill‑over level of the shower tray/bath and the showerhead (refer to illustration). This is to prevent back-siphonage. Note! Only use Shower Fittings recommended by the manufacturer or supplier. 8.
Solid Wall or Stud Partition Fixing Using Rear Mountings 5. Cut away the plasterboard or brick work to the required depth. Important! This depth ‘X’ will depend on the finished wall thickness e.g. tiles or facia board. Refer to the table for this measurement. For stud partitions depth ‘X’ refers to the distance from the rear mounting e.g. wooden baton, to the front of the wall (before tiling). 1. Determine the route for the hot and cold supply pipework and for the outlet pipework.
6. Offer up the mixer valve into the hole, make sure that it is level, central, and square to the finished wall surface (or the control components will not fit correctly), then mark the positions of the fixing screw holes through the building-in shroud and onto the wall. Important! There are various shower fittings, spouts, bath fillers etc. that can be used with this product, refer to the appropriate installation instructions supplied with your outlet fittings and install the outlet pipework to suit.
Panel Fixing using Securing Brackets - Mounting off Rear Face 15.Re-fit the building-in shroud to the shower valve using the three fixing screws. 16.Using the building-in shroud as a guide for the finished wall thickness, finish the wall. Caution! Make sure that the finished wall is within the minimum and maximum limits otherwise the control components will not fit correctly. Note! For laminated panels the mixer must be positioned from the rear of the panel.
8. Install the hot and cold supply pipes (Hot - Left, Cold - Right). 9. Caution! It is essential at this point that the supply pipework is thoroughly flushed through before connection to the mixer. Failure to do so may result in product malfunction and may invalidate your guarantee. 10. Remove the screws and remove the building-in shroud (retain the screws for later use). 11. Secure the shower valve (positioned from the rear of the panel) with the M5 x 40 mm fixing screws. 12.
Solid Wall or Stud Partition Fixing using Securing Brackets 4. Remove the building-in shroud 5. Fit the securing brackets to the mixer. Important! The securing brackets must be fixed vertically, as illustrated. Important! Make sure that the correct holes are used, otherwise the backplate cannot be fitted. 1. Refer to section: ‘Solid Wall or Stud Partition Fixing using Rear Mountings’ and follow instructions 1 to 4.
Important! There are various shower fittings, spouts, bath fillers etc. that can be used with this product, refer to the appropriate installation instructions supplied with your outlet fittings and install the outlet pipework to suit. MIN MAX Spirit Level Building-in Shroud Securing Screws 11. Turn on the water supplies and check for leaks. Note! Cap off the outlet pipes and operate the divertor to check the outlet connections. 12.
Control Assembly 3. Fit the backplate to the shower control and secure with the three securing screws (removed from the building-in shroud). Make sure that the seal is fully compressed on the finished wall surface. Note! If the finish is particularly uneven (i.e. due to grout lines), apply a small amount of silicone sealant to ensure a seal. Caution! Do not overtighten the screws as this may cause the backplate to distort, preventing the fitting of the control knobs. 4.
Operation Reversed Inlet Supplies The Mira Discovery with Diverter thermostatic mixer is supplied with inlet connections Hot - Left, Cold - Right as standard. If the hot and cold water supply pipes have been reversed during installation the thermostatic cartridge must be removed and rotated 180°. Position 1 Can be either showerhead or bath filler OFF Position HOT Position 2 Can be either showerhead or bath filler COLD Temperature Knob 1.
6. Once the desired maximum blend temperature has been achieved, refit the temperature hub without disturbing the spindle, positioning the temperature hub so that the lug is against the left side of the stop on the cartridge face (refer to illustration). Make sure that the temperature has not altered. Commissioning Maximum Temperature Setting Before using the shower the maximum temperature must be checked to make sure that it is at a safe level.
The British Burns Association recommends 37 to 37.5°C as a comfortable bathing temperature for children. In premises covered by the Care Standards Act 2000, the maximum mixed water outlet temperature is 43°C. Type 2 Valves Application The approved designations for Type 2 Valves are as follows: Models The thermostatic mixing valve will be installed in such a position that maintenance of the TMV and its valves and the commissioning and testing of the TMV can be undertaken.
this is acceptable providing the temperature of the water seeping from the valve is no more than 2°C above the designated maximum mixed water outlet temperature setting of the valve. Temperature readings should be taken at the normal flow rate after allowing for the system to stabilise. The sensing part of the thermometer probe must be fully submerged in the water that is to be tested.
Maintenance General This Product is precision engineered and should give continued safe and controlled performance, provided: 1. It is installed, commissioned, operated and maintained in accordance with manufacturers recommendations. 2. Periodic attention is given, when necessary, to maintain the product in good functional order. The Mira Discovery with Divertor thermostatic mixer is designed to need only minimal maintenance in normal use.
Divertor Filter Note! The filters must not be removed except for cleaning. If the thermostatic mixer is operated without the inlet filters or check valves fitted the warranty on the product will be void. Cartridge Filter Cover Cartridge 1. Isolate the supplies to the shower control and operate the flow control to drain any residual water. 2. Unclip and remove the concealing plate. 3. Unscrew the 3 backplate securing screws and remove the backplate. 4.
Spare Parts 1142347 Diverter Control Assembly 1142350 Diverter Assembly A 1142349 Diverter Cap A 1691.145 Outlet Adapter (89 ctrs) A A A A 1691.144 Detent and Flow Hub 1142348 Diverter Filter Pack 1142354 Filter and Checkvalve Assembly A A A 1624.114 Outlet Plug 1624.112 Filter A 1142352 Nut and Olive Pack 1142351 Flow Regulator Pack 1691.143 Screw and Component Pack 1691.
Spare Parts 450.20 RAC Mounting Pack 1595.
Accessories Genuine Mira accessories can be purchased direct from Customers Services (our contact details can be found on the back cover of this guide) or from approved stockists or merchants. Shower Seat White - 2.1536.128 White/Chrome - 2.1536.129 For use in or out of the showering area. Note! Must be installed onto a solid wall. Shower seat folds up when not in use Showerhead Holder White - 2.1605.149 Chrome - 2.1605.
Customer Services Guarantee Your product has the benefit of our manufacturer’s guarantee which starts from the date of purchase. To activate this guarantee, please return your completed registration card, visit our website or free phone 0800 0731248 within 30 days of purchase (UK only). Within the guarantee period we will resolve defects in materials or workmanship, free of charge, by repairing or replacing parts or product as we may choose.
