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THAMES thermostatic bar mixer shower with diverter Installation and operating instructions nstallers please note these InstructIons are to be left wIth the user 2180452J - September 2013...
Thermostatic bar mixer shower INTRODUCTION Water temperature requirements Recommended maximum: = 65°C This book contains all the necessary fitting and operating instructions for your mixer shower. Minimum hot water temperature: = 55°C Please read them carefully and read through Maximum cold water temperature: = 25°C the whole of this book before beginning your installation.
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Thermostatic bar mixer shower PLUMBING REQUIREMENTS Hard water areas a. If it is intended to operate the shower DO NOT use jointing compounds on any pipe in areas of hard water (above 200-ppm fittings for the installation, temporary hardness), a scale inhibitor may DO NOT solder fittings near the mixer unit have to be fitted.
Thermostatic bar mixer shower TYPICAL DOMESTIC INSTALLATIONS *Fig.2 (diagrammatic view – not to scale) Domestic gravity fed systems ( fig.2) The shower control MUST be fed from a cold water cistern and hot water cylinder providing nominally equal pressures. There MUST be Stop valve a minimum of one metre head of water.
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Thermostatic bar mixer shower Instantaneous gas-heated systems, *Fig.4 (diagrammatic view – not to scale) e.g. combination boilers (fig.4) The shower control MUST be installed with a multi-point gas water heater or combination boiler of a fully modulating design (i.e. to maintain relatively stable hot water temperatures).
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Thermostatic bar mixer shower Mains pressurised thermal store systems ( fig.6) *Fig.6 (diagrammatic view – not to scale) Packages of this type, fitted with a tempering valve (blender valve) can be used. A drop tight pressure reducing valve MUST be fitted if the supply pressures exceed 5 bar running.
Thermostatic bar mixer shower INSTALLATION *Fig.7 (diagrammatic view – not to scale) PREPARING THE MIXER VALVE Check the contents to make sure all items are present. Before starting, make sure all of the openings on the valve are carefully covered to stop ingress of any debris, etc.
Thermostatic bar mixer shower Fig.8 *IMPORTANT! Appropriate end fitting BEFORE FIXING the supply pipework within the wall, refer to the ‘SUPPLY PIPE WORK’ and ‘STRAIGHT FITTINGS’ sections. See figures 8 to ensure the MINIMUM of 7mm of thread is available once the cover trims are fitted. THIS IS REQUIRED TO ALLOW THE CORRECT FITTING OF THE MIXER VALVE.
Thermostatic bar mixer shower MAKING GOOD Fig.10 • Make good the wall and complete the tiling. Note: It is advised to use a suitable sealer around the variable connector where it enters the wall to stop water ingress. • Screw the supplied cover trims onto the fittings until tight to the wall (fig.10). Cover trim FLOW REGULATION IMPORTANT: Make sure that all supply pipework...
Thermostatic bar mixer shower FITTING THE MIXER CONTROLS Fig.11 Top vertical The mixer controls will need to be fitted before flat of the max commissioning can be carried out. temp stop in the 12 o’clock Temperature control position • Fit the maximum temperature stop. The Maximum orientation is shown in (fig.11).
Thermostatic bar mixer shower • Fit the rear section of the fixed arm over the Fig.13 mounting plate, but do not fully tighten the grub screw at this time. (fig.15). • Adjust the riser pipe and fixed arm position to suit. Riser pipe (threaded • Once correctly positioned, lock the diverter section at the top) collar. Finger tight should be sufficient. Press button Note: There is a small amount of depth and hold...
Thermostatic bar mixer shower their design temperature and pressures, and Fig.16 are within the requirements as stated on Page 2, & below. • Make sure the temperature control (right hand side) is at the maximum temperature setting. • Allow the shower to run at this maximum temperature setting until the water temperature has stabilised. • Rotate the temperature control until your desired showering temperature is reached.
Thermostatic bar mixer shower ADJUSTING THE MAXIMUM Fig.18 TEMPERATURE STOP SETTING • Remove the lever and lever screw from the temperature control to allow access to the retaining screw. Loosen the retaining screw and pull the temperature control off (fig.16). Front of • The maximum temperature stop DOES NOT mixer need to be removed. • Turn the flow control (left side) to full flow.
Thermostatic bar mixer shower DIMENSIONS ø51 3/4” BSP All dimensions listed in this fitting book regarding the product and installation are approximate.
Thermostatic bar mixer shower SPARE PARTS PLEASE NOTE: fitting has Left Hand thread Ref. Description Part No. Ref. Description Part No. 1. Flow control ......83308860 Non return valves (NRV) ..83307290 2. Temperature control....83308850 Straight connector ....UNPIPCON 3.
Thermostatic bar mixer shower *SPARE PARTS - bar mixer fittings Ref. Description Part No. A. Bar bracket UNBMXBKT B. Bar bracket (exposed) UNBMXFIXEX C. Bar bracket (push-fit) UNBMXFIXBT D. Straight connector 86001120 E. Dogleg connector 86001110 The bar mixer fittings can be purchased from Customer Spares.
Thermostatic bar mixer shower MAINTENANCE temperature variation, then internal components will require replacement - please see the spare The following maintenance procedure must parts list. be carried out for commercial and health care premises, but is not necessarily required for Cleaning domestic installations.
Thermostatic bar mixer shower FAULT FINDING The following can be carried out by a competent person Problem/Symptom Cause Action/Cure 1 Water too hot. 1.1 Temperature 1.1.1 Refer to commissioning section. control incorrectly commissioned. 1.2 Not enough cold 1.2.1 Reposition temperature control knob water flowing through shower.
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Thermostatic bar mixer shower FAULT FINDING Problem/Symptom Cause Action/Cure 4 Water does 4.1 Water supplies cut off. 4.1.1 Check water elsewhere in house and if not flow or necessary contact local water company. shower pattern 4.2 Shower unit blocked. 4.2.1 Inspect the inlet filters. Clean if necessary. collapses when 4.3 Blockage in pipework.
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