Introduction of Trion Sema Thermostatic Bar Mixer TMV2

Introducing the Trion Sema Thermostatic Bar Mixer TMV2 , a stylish and functional addition to any modern bathroom. This high-quality shower mixer is designed to provide a powerful and consistent water flow, with easy temperature control for a comfortable showering experience. With an estimated price range of $200 to $300 and a launching date set for early 2023, the Trion Sema Bar Mixer Shower is a must-have for any homeowner looking to upgrade their shower setup.

Spare Parts

Ref.	Description	Part No.
1	Flow control & temperature knobs	83311050
2	Mechanic headwork	83308450
3	Thermostatic cartridge	83308460
4	Trim pack	86001150
5	Straight inlet connector	UN PIPCON
6	Bar bracket (optional)	UNB MXBKT

MAIN COMPONENTS

Sema thermostatic bar mixer valve
Long thread straight connector
Showerhead (not shown)
Riser rail assembly (not shown)

Trion Sema Thermostatic Bar Mixer TMV2 Specifications

The Trion Sema Bar Mixer Shower boasts several key features that make it stand out from the competition. These include a sleek and durable brass construction, a ceramic disc cartridge for smooth and precise temperature control, and a flow rate of up to 9 liters per minute. Additionally, the shower mixer is compatible with both mixer and thermostatic shower valves, giving you the flexibility to choose the right setup for your bathroom. The shower mixer also has a minimum water pressure requirement of 1 bar, ensuring a consistent and strong water flow.

SITE REQUIREMENTS

The installation must be in accordance with Water Regulations and Bylaws. Minimum running water pressure: 0.5 bar. Maximum running water pressure: 5 bar. Maximum static water pressure: 10 bar. Do not connect the mixer shower to a gravity hot supply and a mains cold supply (or vice versa). For the best performance within the specified running pressure range, a minimum flow of eight litres per minute should be available to both inlets. While the mixer shower is operational (open outlet), inlet pressures must not be capable of exceeding 7 bar. For effective operation of the internal seals, the maximum static pressure must not be exceeded.

Note: On sites where the running pressure is above 5 bar, the use of a suitably sized pressure reducing valve fitted in the cold mains supply pipework can provide nominally equal pressures at the mixer shower. For best performance, both the hot and cold water supplies to the mixer should be fed at nominally equal pressures. The pipework should be installed such that the flow is not significantly affected by other taps and appliances being operated elsewhere on the premises. Note: Where thermal store systems and instantaneous gas water heaters are used, if excessive draw-offs take place the boiler may not be able to maintain an adequate output temperature. This could result in the shower temperature becoming noticeably cooler.

WATER REQUIREMENTS

Maximum hot water temperature = 80°C Recommended maximum = 65°C Minimum hot water temperature = 52°C Maximum cold water temperature = 20°C BS 6700 recommends that the temperature of stored water should never exceed 65°C. A stored water temperature of 60°C is considered high enough to meet all normal requirements and will minimise the effects of scale in hard water areas. Temperature adjustment range: The mixed water temperature can be adjusted from cold through to a top limit which can be preset during installation with full anti-scald protection throughout the range (35°C to 40°C), providing the hot water temperature at the inlet remains 10°C above the outlet temperature. Should there be a loss of flow to either incoming supply then water from the shower will stop or be reduced to a trickle until both supplies are restored.

TYPICAL SUITABLE INSTALLATIONS

Instantaneous gas-heated systems, e.g. combination boilers (fig.2) The shower control MUST be installed with a multipoint gas water heater or combination boiler of a fully modulating design (i.e. to maintain relatively stable hot water temperatures). A drop tight pressure reducing valve MUST be fitted if the supply pressures exceed 5 bar running. An expansion vessel (shown in fig.2) MUST be fitted, and regularly maintained, to prevent the shower mixer from being damaged by excess pressures. This may already be installed within the boiler (check with manufacturer) and is in addition to the normally larger central heating expansion vessel. The layout and sizing of pipework MUST be such that nominally equal inlet supply pressures are achieved and the effects of other draw-offs are minimised. The hot supply temperature MUST remain a minimum of 10°C hotter than the required blend temperature for optimum performance.
Unvented mains pressure systems (fig.3) The shower control can be installed with an unvented, stored hot water cylinder. For systems with no cold water take-off after the appliance reducing valve, it will be necessary to fit an additional drop-tight pressure reducing valve when the mains pressure is over 5 bar. The drop-tight pressure reducing valve must be set at the same value as the unvented package pressure reducing valve. Note: An additional expansion vessel (fig.3) may be required if a second pressure reducing valve is installed. This does not apply to packages with a cold take-off after the pressure reducing valve to the cylinder. The layout and sizing of pipework MUST be such that nominally equal inlet supply pressures are achieved and the effects of other draw-offs are minimised.
Mains pressurised thermal store systems (fig.4) 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. An expansion vessel (shown in fig.4) MUST be fitted, and regularly maintained, to make sure the unit is not damaged by excess pressures. This may already be installed externally or internally within the thermal store (check with thermal store manufacturer).
Gravity fed systems (fig.5) The shower control MUST be fed from a cold water cistern and hot water cylinder providing nominally equal pressures. There must be a minimum of 5-metre head of water which should be measured from the base of the cold water cistern to the top of the showerhead.
Pumped gravity fed systems (fig.6) The shower control MUST be fed from a cold water cistern and hot water cylinder providing nominally equal pressures. The mixer unit may be used with a gravity fed system with a pump to boost pressures as shown. There will be a minimum head requirement which will be specified in the installation and operation instructions supplied by the pump manufacturer.

INSTANTANEOUS WATER HEATER APPLIANCE CAPABILITIES

For the best performance from the shower when connected to an instantaneous water heater, the appliance must be capable of raising the temperature of the incoming water to a minimum of 52°C (125°F) and delivering a flow rate of not less than eight litres per minute. The flow regulators supplied must be inserted into the long thread straight connectors as follows: Insert the filter, then the flow regulator (fig.7) and secure in place with the threaded retainer. With the flow regulator fitted and when the system is in use, the On/Off flow control should be turned fully anti-clockwise to the full flow setting.

PREPARING THE MIXER VALVE

Check the contents to make sure all parts are present. Before installing, make sure all the openings on the valve are carefully covered to stop the ingress of any debris, etc. while routing the supply pipework. The shower valve is suitable for installation on a solid wall, a stud partition wall, dry-lined wall or fixing to a laminate cubicle or panel. The hot and cold water pipes should be securely attached within the wall or panel to support the valve and prevent movement after installation. The hot water inlet must be on the left-hand side as indicated in 'typical suitable installations'.

SITING OF THE SHOWER

WARNING! The shower must not be positioned where it will be subject to freezing conditions. Refer to fig.8 for the correct siting of the shower. Position the shower and showerhead on the wall so that all controls can be comfortably reached while using the shower. The showerhead can be positioned either side of the shower. The unit must be positioned horizontally with the outlet port at the bottom.

Description

The Trion Sema Bar Mixer Shower is a stylish and functional addition to any bathroom. Its minimalist design, featuring clean lines and a modern finish, will complement any bathroom decor. The shower mixer is easy to install, with a standard 1/2 inch BSP connection, and comes with all the necessary fittings and instructions. The ceramic disc cartridge ensures smooth and precise temperature control, while the durable brass construction guarantees a long-lasting and reliable performance. The shower mixer is also easy to clean, with a simple wipe-down surface that resists dirt and grime buildup.

Installation of Trion Sema Thermostatic Bar Mixer TMV2

DO NOT connect the outlet of the shower to anything other than the showerhead supplied.
DO NOT use jointing compounds on any pipe fittings for the installation.
DO NOT solder fittings near the shower unit as heat can transfer along the pipework and damage seals and thermostatic components.
Note: Suitable service valves (complying with Water Regulations and Bylaws) MUST be fitted on the hot and cold water supplies to the shower as an independent means of isolating the water supplies should maintenance or servicing be necessary.
When connecting the pipework avoid using tight 90° elbows. Swept or formed bends will give the best performance. The supply pipes can be routed either from the side, rising, rear, or falling and must end in suitable fittings (fig.9) to accept the long thread connectors. The straight connectors can be used to connect to ½” BSP female elbow fittings in solid wall installations. The inlet centres on the shower valves must be aligned horizontally and centred to 150 mm. The hot and cold supply pipes must be anchored rigidly to support the valve and stop any movement after installation.
If installing in hollow walls or laminate cubicles, fittings are supplied to compress onto the wall to support the mixer valve (fig.10). The maximum thickness of wall is about 20 mm. Enough room must be left on the connector to fit the compression nut and olive. At the front end, an allowance MUST be made to accept the shower union and collar. Flush out the pipework in accordance with Water Regulations and Bylaws.
Connect 15 mm pipework using standard compression nuts and olives (fig.11). Screw the supplied collars onto the fittings until tight to the wall. Offer the shower valve to the fittings and, checking that the sealing washers are in place, screw the unions onto the fittings. If installing with a combi-multipoint system, make sure the flow regulators are fitted.

Leak Testing

Fit the hose to the outlet and direct it to waste. Open the supplies and test for leaks in the valve connections. Remedy any leaks if necessary.

Commissioning

Make sure that both the hot and cold water supplies are fully open and at (or near to) their design temperature and pressures, and are within the requirements as stated. Check the temperature control (right-hand side) is rotated fully anti-clockwise (press the override button to achieve maximum temperature setting). Make sure the showerhead is directed to waste. Start the water flow by turning the flow control (left-hand side) anti-clockwise. Allow the shower to run at the maximum temperature setting until the water temperature has stabilized. Rotate the temperature control knob until your desired maximum showering temperature is reached. The mixer valve contains a maximum temperature override button set at 38°C. The mixer valve is factory set to give a maximum outlet temperature of 38°C. This should be checked on site to make sure the setting has not been altered.

Operating the Shower

To start the shower, rotate the flow control (left-hand side) anti-clockwise. For maximum flow, press the economy override button and rotate the flow control fully anti-clockwise. To stop the water flow, rotate the flow control fully clockwise. To adjust the water temperature, rotate the temperature control (right-hand side) – clockwise for a cooler shower or anti-clockwise for a hotter shower. To overcome the maximum temperature stop, depress the temperature override button.

Caution: Exposed metal surfaces may become hot during use.

Adjusting the Maximum Temperature Override Setting

Remove the end cap from the temperature control knob to expose the retaining screw (fig.12). Undo the screw and pull off the knob.
Turn the flow control (left-hand control) clockwise and allow the shower to run until the water temperature has stabilized.
Carefully turn the temperature spindle anti-clockwise to increase the maximum outlet temperature (fig.13).
Once you are satisfied with the showering temperature, refit the temperature control.
Take care to align the override button to the 12 o’clock position.
Secure the temperature control in place with the retaining screw and refit the end cap.

WARNING! Do not use abrasive or aggressive cleaning products when cleaning the shower as they may damage the unit.

Setup Guide

Setting up the Trion Sema Bar Mixer Shower is a straightforward process. First, ensure that the water supply is turned off and the area around the shower valve is clear. Next, attach the shower mixer to the shower valve using the provided fittings, making sure that the connections are tight and secure. Once the shower mixer is attached, turn on the water supply and check for any leaks. If there are no leaks, adjust the temperature control to your desired setting and enjoy your new shower.

Trion Sema Thermostatic Bar Mixer TMV2 Cleaning

The manufacturer recommends that all products are cleaned using warm, soapy water. Do not use abrasive or aggressive chemical cleaning products as this may affect the product surface finish and invalidate your guarantee.

Cleaning the Filter

Turn off the water supplies before starting. To gain access to the filters, remove the unit from the inlet fittings. Remove the sealing washers from the union inlets (fig.14). Wash the filter thoroughly under running water to remove all debris. Reassemble the shower to the inlet fittings.

The mixer is designed for use with traditional low pressure ‘gravity’ water systems, using a cold water cistern and hot water cylinder, or for use with the higher pressure systems up to a maximum of 5 bar running pressure. The valve MUST NOT be subjected to water temperatures above 80°C. The mixer is suitable for fully modulating type combination boilers and multi-point hot water heaters. It is also suitable for thermal storage, unvented systems and pumped gravity systems.

IMPORTANT: Before installing with a gas instantaneous water heater, make sure it is capable of delivering hot water at a minimum switch-on flow rate of 3 litres per minute. At flow rates between 3 and 8 litres per minute, the appliance must be capable of raising the water temperature to a minimum of 52°C.

IMPORTANT: When installing this mixer with a combination boiler or multi-point, flow regulators may be installed in the unit. The water temperature at the inlet to the mixer must remain relatively constant when flow rate adjustments are made (refer to the water heater operating manual to confirm compatibility with this mixer shower). This mixer is supplied with an integral single check valve and integral filter in each inlet. Inlet connections are to 15 mm compression or ½” BSP female fittings (not supplied)

SAFETY WARNINGS

Layout and sizing of pipework MUST be such that when other services are used, pressures at the shower control inlets do not fall below the recommended minimum.
DO NOT choose a position where the shower could become frozen.
DO NOT connect this mixer shower to any form of tap or fitting not recommended by the manufacturer.
The showerhead MUST be regularly cleaned to remove scale and debris.
Conveniently situated service valves in each inlet supply MUST be fitted as an independent method of isolating the shower should maintenance or servicing be necessary.
If it is intended to operate the shower in areas of hard water (above 200 ppm temporary hardness), a scale inhibitor may have to be fitted. For advice on the Triton scale inhibitor, please contact Customer Service.
DO NOT operate the shower outside the guidelines as laid out in ‘site requirements’.

Fault finding

The following can be carried out by a competent person

Problem/Symptom	Cause	Action/Cure
1. Water too hot.	1.1 Temperature control incorrectly commissioned.	1.1.1 Refer to ‘commissioning’ section.
	1.2 Not enough cold water flowing through shower.	1.2.1 Turn temperature control clockwise.
	1.3 Increase in the ambient cold water temperature.	1.3.1 Turn temperature control clockwise.
	1.4 Cold water supply blocked.	1.4.1 Turn off the shower and consult a competent plumber or contact Customer Service.
	1.5 High volume of cold water drawn off elsewhere.	1.5.1 Reduce the simultaneous demand from the supply.
2. Water too cold.	2.1 Temperature control incorrectly commissioned.	2.1.1 Refer to ‘commissioning’ section.
	2.2 Not enough hot water flowing through shower.	2.2.1 Turn the temperature control anti-clockwise.
	2.3 Decrease in the ambient cold water temperature.	2.3.1 Turn the temperature control anti-clockwise.
	2.4 Insufficient hot water supplies from the heating system.	2.4.1 Make sure heating appliance is set to maximum or has sufficient stored hot water.
		2.4.2 Make sure heating appliance is igniting by turning a hot water tap elsewhere.
	2.5 Hot water supply blocked or restricted.	2.5.1 Turn off the shower and consult a competent plumber or contact Customer Service.
	2.6 Flow regulator not fitted (HP systems only).	2.6.1 Fit the supplied flow regulators in the long thread connectors (see ‘instantaneous gas water heaters’).
3. High water flow and/or poor performance on a mains fed system.	3.1 Flow regulators not fitted.	3.1.1 Fit the supplied flow regulators in the long thread connectors (see ‘instantaneous water heaters appliance capabilities’).
4. Water does not flow or shower pattern collapses when another outlet is turned on.	4.1 Water supplies cut off.	4.1.1 Check water elsewhere in house and if necessary contact local water company.
	4.2 Shower unit blocked.	4.2.1 Inspect the inlet filters. Clean if necessary.
	4.3 Blockage in pipework.	4.3.1 Turn off the shower and consult a suitably competent plumber.
	4.4 Showerhead blocked.	4.4.1 Clean showerhead.
	4.5 System not capable of supplying multiple outlets at the same time.	4.5.1 Reduce the simultaneous demand.
		4.5.2 Make sure stop/service valves are fully open.
		4.5.3 Check if sufficient water pressure.
The following is recommended for a professional qualified installer only
5. Water too cold.	5.1 Running pressure in excess of maximum recommended.	5.1.1 Fit a pressure reducing valve.
6. Shower controls noisy while in use.	6.1 Running pressure in excess of maximum recommended.	6.1.1 Fit a pressure reducing valve.
7. Shower will not shut off.	7.1 Flow control worn.	7.1.1 Renew flow control.

Triton Standard Guarantee

Triton Plc guarantees this product against all mechanical defects arising from faulty workmanship or materials for a period of five years for domestic use only, from the date of purchase, provided that it has been installed by a competent person in full accordance with the fitting instructions.

Pros & Cons

Pros

Sleek and modern design
Durable brass construction
Ceramic disc cartridge for precise temperature control
Compatible with both mixer and thermostatic shower valves
Easy to install and clean

Cons

Minimum water pressure requirement of 1 bar may not be suitable for all homes
May be more expensive than other shower mixers on the market

Customer Reviews about Trion Sema Thermostatic Bar Mixer TMV2

Customers have praised the Trion Sema Bar Mixer Shower for its sleek design, durable construction, and precise temperature control. They also appreciate its compatibility with both mixer and thermostatic shower valves, making it a versatile and convenient choice. However, some customers have reported issues with the water flow and pressure, and have noted that the shower mixer may be more expensive than other options on the market.

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