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TMV3 Exposed & Concealed Lever Shower
Installation and Maintenance Guide High performance TMV3 approved sequentially controlled thermostatic showers ideal for healthcare applications.
General Information The Saracen TMV3 Exposed & Concealed Lever Shower are both TMV3 approved thermostatic sequential control showers. A sequential control is one where the on/off and temperature control is achieved by turning the same control knob: the first movement turns the shower on to the cold position and any subsequent movement counter clockwise increases the temperature to a set maximum. The Saracen TMV3 Exposed & Concealed Lever Shower are built around a single cartridge principle meaning that all of the working components are included in an easy to replace one piece cartridge. Each shower includes; check valves, strainers and an integral flow regulator. This installation and maintenance guide has been prepared to provide as much information as possible to aid the plumber in the initial installation and to provide details of ongoing maintenance requirements and spare parts for the facilities manager.
Specification Hot temperature supply range: Recommended hot supply temperature: Cold temperature supply range: Maximum static pressure: Maximum working pressure: Minimum working pressure: Permitted supply pressure variation: Factory set maximum temperature: Minimum temperature differential : (between hot supply and the outlet temperature)
50-85ºC 55-60ºC 5-20ºC 10.0 bar 5.0 bar 1.0 bar 5:1 38ºC (+/- 2ºC) 10ºC
Flow rate (regulated): 8lpm
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Code
Operating Pressure
Application
HP-SE
High Pressure
Showering Economy
Recommended Maximum Temperature Temperature 41ºC
43ºC
General Installation Guidance This installation guide is provided to give instruction on the installation practices that should be observed to ensure the correct functioning of the Saracen TMV3 Exposed & Concealed Lever Shower controls. Failure to comply with these instructions will result in the warranty becoming null and void. In all cases before installing the shower it is imperative to ensure that the system conditions i.e. pressures, temperatures and flow rates are within the limits stated in the specification section. Prior to installing the shower please ensure that the pipework is flushed out and is free from any system debris, i.e. sealant, PTFE tape, flux, solder or any other material that could become trapped in the strainers or check valves. Failure to do this may result in very poor flow performance and/or damage to the shower. As thermostatic showers contain temperature sensitive components soldering on or near the shower must be avoided.
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Installing the Saracen TMV3 Exposed Lever Shower The Saracen TMV3 Exposed Lever Shower is a sequentially controlled TMV3 approved control shower. It is supplied with integral check valves, strainers and flow regulator.
Installing the shower (through wall) Isolation valve should be fitted on the supply lines. Install the pipework in the void or chase to the 150mm centres. Secure the pipes so they do not push back into the void or chase when the shower is fitted. Finish the internal wall leaving 40mm of 15mm pipe exposed as a minimum. Mark the pipes at a minimum of 20mm from the tile and using a suitable tool (pipe cutter), cut away the excess pipe.
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Using the Allen key supplied remove the two grub screws positioned at the bottom of the shower control, and remove the backplate.
Using the backplate as a template, mark the position of the holes onto the wall central to the protruding pipes.
Drill two holes in the marked positions, insert a rawl plug, and postion and screw the backplate to the wall until secure.
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The Saracen TMV3 Exposed Lever Shower is supplied with integral flow regulation, check valves and strainers as part of the design of the shower. So these do not need to be fitted seperatley.
Loosely fit the olive and back nut on to the elbows of the shower, place the rose over the end and push up to the nut. Position the shower on to the protruding pipes and backplate. Taking care that hot and cold are fitted in the correct orientation. Re-insert the two grub screws and use them to secure the shower to the back plate
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Tighten the nuts on either side until the olive has compressed, and the connection has sealed. You can now connect the rigid riser or flexible shower kit.
The Saracen TMV3 Exposed Lever Shower is supplied as standard with the connection on the bottom, this connection is designed to accept a nut and olive (supplied) or a 1/2” shower hose.
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Installing the shower (alternative layouts) The TMV3 Exposed Lever Shower comes supplied with the hot and cold water elbows positioned for a 'through wall' connection, however if you have exposed rising or falling pipework then it can also be used. To do this simply loosen the grub screws in the back of the elbows, and reposition them to the desired location and re-tighten the screw.
BACK ENTRY
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BOTTOM ENTRY
TOP ENTRY
Installing the Saracen TMV3 Concealed Lever Shower
The Saracen TMV3 Concealed Lever Shower is a sequentially controlled TMV3 approved control shower. It is supplied with integral isolators check valves, strainers and flow regulator. To begin select a suitable location for the Saracen TMV3 Concealed Lever Shower to be fitted. Position the shower in the wall and ensure that the plastic shroud will be flush to the finished wall surface, therefore if you are tiling the surface ensure you leave room for this so the plastic shroud is at the same level as the finished tiled surface.
Secure the shower in its backing box into the void or chase using the holes in the backing box, to position the fixing screws. Remove the plastic shroud from the shower. Flush the pipework through thoroughly.
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Connect the pipework to the inlets of the shower and also the outlet, the orientation of these connections can be changed to suit various applications: The inlet elbows can be position for either top or bottom connections. The outlet connection can also be changed from top to bottom if required.
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Replace the plastic shroud.
Finish the wall, plaster, tile and grout, ensuring you are as close to the template as possible.
Remove plastic shroud. Open the isolating valves on both the hot and cold supply elbows.
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Fit the coverplate on the shower control.
Fix with the two screws provided.
The corverplate includes a seal between it and the wall so silicone around the plate is not required.
Position handle and secure with the Allen key provided.
Finally insert the indice to cover the screw.
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An example of the the Saracen TMV3 Concealed Lever Shower installed with a flexible hose and handset which has a bottom connection.
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Commissioning Since the installed supply conditions are likely to be different from those applied in the laboratory tests it is appropriate, at commissioning, to carry out some simple checks and tests on each shower to provide a performance reference point for future in-service tests. In all cases the following must be checked to ensure the correct performance of the thermostatic shower: • •
The designation of the thermostatic shower matches the intended application The supply pressures and temperatures are within the range of operating pressures and temperatures for the designation of the valve
It is important to record the testing carried out during the commissioning and also to record the temperature of the hot and cold water supplies and the temperature of the mixed water at the full hot setting. Once the correct outlet temperature has been achieved, the valves internal mechanism should be exercised at least 3 times by alternately shutting off the hot and cold supplies while the tap is set in the full hot position. This will cause the piston inside the cartridge to travel its full stroke and ensure that it is moving freely so the valve can operate correctly. Test 1. – With the shower in the full hot position and both hot and cold supplies turned fully on and at system temperatures, isolate the cold supply to the thermostatic shower. The flow should reduce to a drip within a few seconds. Restore the cold supply and check that the set temperature has not altered. Test 2. – Repeat the test for the hot supply Record the testing done during the commissioning and also record the temperature of the hot and cold water supplies and the temperature of the mixed water at the full hot setting.
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Adjusting the Maximum Temperature The Saracen TMV3 Exposed & Concealed Lever Shower are supplied factory set at a maximum of 38°C +/- 2°C, to alter this temperature please adopt the following procedure: With the shower in the off position, use a suitable jewellers type screwdriver or similar, carefully remove the indice from the centre of the shower control to gain access to the allen screw that holds the handle onto the thermostatic cartridge. Using a 4mm Allen key, remove the retaining screw followed by the handle, this will expose the top of the thermostatic cartridge. You should now be able to see two stainless steel cams. One cam (lower) will be up against the brass stop while the other, the maximum temperature cam (upper), will be approximately in mid position. Remove the maximum temperature cam (upper) and loosely re-fit the shower handle.
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Turn the shower on and check the temperature of the water with a handheld digital thermometer, continue to move the handle until the desired maximum temperature is achieved. Once set, remove the handle without changing the spindle position and re-fit the maximum temperature stop cam tight against the brass stop. Loosely fit the handle and shut off the shower
Re-fit the Allen screw and replace the indice, making sure that the handle is in the desired position when shut off.
Note: Changing the maximum set temperature will change the amount of rotation on the handle. Increasing the temperature will mean extra rotation whilst decreasing will result in less rotation.
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Replacing the Thermostatic Cartridge With the shower in the off position, use a suitable jewellers type screwdriver or similar, carefully remove the indice from the centre of the shower control to gain access to the Allen screw that holds the handle onto the thermostatic cartridge. Using a 4mm Allen key, remove the retaining screw Remove the handle, this will expose the top of the thermostatic cartridge. Using a spanner, unscrew the cartridge. Take your replacement cartridge and insert into the shower housing. Tighten the cartridge in position. Loosely fit the handle, re-fit the Allen screw and replace the indice, making sure that the handle is in the desired position when shut off.
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Maintenance & Performance Checks Routine Maintenance To comply with the current NHS guidelines thermostatic showers should be tested against the original performance results 6-8 weeks after installation. If the temperatures have remained to within +/2°C and the hot and cold water supply isolation tests are operating correctly, then a six monthly cycle of performance testing can be implemented. Accessing the check valve and strainer Saracen TMV3 Exposed Lever Shower Isolate the water supplies and remove the complete shower control
Exploded view of the elbow on the Saracen TMV3 Exposed Lever Shower please follow these steps to access the components:
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To access the check valve, use a 2.5mm Allen key to remove the grub screw situated behind the elbow, this will allow the elbow to slide away from the shower body. You will then be able to remove and clean or replace the check valve which is situated in the shower body connection.
To access the strainer take the elbow and use a 8mm Allen key to remove the internal bush which includes the strainer. This can then be washed under clean running water, to remove any debris.
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TMV3 Concealed Lever Shower Remove the indice on the end of the handle to access the securing screw, using a 4mm Allen key remove the screw and in turn remove the handle. Remove the two securing screws which hold the cover plate in position, then slide the cover plate off the body of the shower. Isolate both the hot and cold water supplies. Unscrew the 3/4" nut on the flat faced union connection. Both the check valve and strainer can now be accessed: The washer/strainer is situated within the union connection and can be removed so that it can be washed under clean running water, to remove any debris. The check valve is situated in the shower body and can be removed/cleaned/ replaced by removing the complete shower body.
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In-Service Testing The purpose of performance checks is to regularly monitor and record the performance of the thermostatic shower. Deterioration in performance can indicate the need for service work on the valve and/ or the water supplies. Using the same measuring equipment, or equipment to the same specification as used in the commissioning of the valve, carry out the following sequence: •
Record the temperature of the hot and cold water supplies
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Record the temperature of the mixed water outlet
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Isolate the cold water supply to the shower, the flow should slow to a slight drip (Maximum residual flow should be no more than 120ml/min)
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Isolate the hot water supply to the shower, the flow should slow to a slight drip
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Record the equipment, thermometer etc. used for the measurements
If the mixed water temperature has changed +/- 2°C from the previous test results then this could indicate that the shower requires servicing.
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Wolseley UK Warwickshire, CV31 3HH For further information please call 01926 705000 or visit www.wolseley.co.uk
Wolseley UK reserves the right to make changes to the product which may effect the accuracy of the information contained in this guide. ZINS153200_001_07-14
