Triton Elina Sequential Built-in Thermostatic Mixer Valve

Introduction

This document provides all necessary fitting and operating instructions for your Triton mixer shower. Please read it carefully and thoroughly before commencing installation. Installation must be performed by a suitably competent person, following the sequence outlined herein. Proper installation ensures a long and trouble-free life for your mixer shower.

Site Requirements

Installation must comply with Water Regulations and Bylaws.

Water Pressure Requirements

• Running Water Pressure:
  • Gravity fed (LP): 0.2 bar minimum, 1.0 bar maximum.
  • Mains fed (HP): 1.0 bar minimum, 5.0 bar maximum.
• Maximum Static Water Pressure: 10 bar (Gravity and mains).

This mixer shower is designed for traditional low-pressure 'gravity' water systems (cold water cistern and hot water cylinder) and higher-pressure UK systems up to 5 bar running pressure. The maximum static pressure must not be exceeded for optimal internal seal operation.

Pressure Reducing Valve

For sites with running pressure above 5 bar, a suitably sized pressure reducing valve fitted in the cold mains supply pipework can help equalize pressures at the mixer shower.

Safety Warnings

• DO NOT install where the shower could freeze.
• DO NOT connect to any tap or fitting not recommended by Triton.
• DO NOT operate outside the specified inlet pressure or flow rate guidelines.
• DO NOT connect a gravity hot supply with a mains cold supply, or vice versa.

Water Minimum Flow Rate

For optimal performance, a minimum flow of 8 litres per minute should be available to both inlets within the specified pressure range.

Water Temperature Requirements

• Maximum hot water temperature: 80°C
• TMV3 Recommended maximum: 65°C
• Minimum hot water temperature: 52°C
• Maximum cold water temperature: 20°C
• Minimum cold water temperature: 5°C
• Minimum temperature differential: 10°C

The mixer shower must not be subjected to water temperatures above 80°C. BS 6700 recommends stored water should not exceed 65°C; 60°C is generally sufficient and minimizes scale effects in hard water areas.

Water Temperature Adjustment and Thermal Safety

The mixed water temperature is adjustable. A top limit must be preset during installation for anti-scald protection (typically 35°C to 40°C), provided the hot inlet temperature is 10°C above the outlet temperature. Loss of either supply will stop or reduce water flow.

Plumbing Requirements

• DO NOT use jointing compounds on pipe fittings.
• DO NOT solder fittings near the mixer unit to prevent heat transfer damage.

Important Considerations:

• Pipework layout and sizing must ensure nominally equal inlet pressures and minimize effects from other draw-offs.
• Pipework should be installed to avoid significant flow impact from other taps/appliances.
• Use swept or formed bends instead of tight 90° elbows for better performance.
• The hot water inlet must be on the left, marked 'HOT', 'H', or with a red/orange label.
• Install suitable isolating valves on both hot and cold supplies for maintenance.
• Flush pipework to clear debris and check for leaks before connecting the mixer.
• Mixer inlets have removable filters that can block if not flushed.

Commercial Applications

For commercial use, Triton recommends easily accessible in-line filters for maintenance.

Hard Water Areas

• In hard water areas (above 200-ppm temporary hardness), a scale inhibitor may be necessary. Contact Triton Customer Service for advice.
• Regularly clean the showerhead to remove scale and debris for optimal performance.

Water System Requirements

This mixer shower is suitable for:

• Gravity water systems
• Pumped gravity systems
• Fully modulating type combination boilers
• Multi-point hot water heaters
• Thermal storage
• Unvented systems

When installing with a combination or multi-point boiler, flow regulation may be needed. Ensure the appliance can deliver hot water at a minimum switch-on flow rate of 3 litres per minute and raise the temperature to 52°C (minimum) at flow rates between 3 and 8 litres per minute. Inlet water temperature must remain relatively constant during flow rate adjustments. For thermal store and instantaneous gas water heaters, excessive draw-off might reduce output temperature. Flow regulators can be used with high-pressure systems to reduce flow and improve economy. The hot supply temperature must be at least 10°C hotter than the desired blend temperature for optimal performance.

Typical Commercial Installations

Commercial Gravity Fed Systems (Fig. 2)

The shower control must be fed from a cold water cistern and hot water cylinder providing nominally equal pressures, with at least one metre of water head. The minimum head distance is measured from the base of the cold water cistern to the top of the showerhead.

Commercial Unvented Mains Pressure Systems (Fig. 3)

The shower control can be installed with an unvented, stored hot water cylinder. If there is no cold water take-off after the appliance-reducing valve, an additional drop-tight pressure-reducing valve is required if mains pressure exceeds 5 bar. This valve should be set to the same value as the unvented package pressure-reducing valve. An expansion vessel may be needed if a second pressure-reducing valve is installed, unless there is a cold take-off after the pressure-reducing valve to the cylinder.

Installation

Preparing the Mixer Valve

Check all parts are present. Cover all openings on the valve to prevent debris ingress during pipework routing. The valve is suitable for built-in installation in solid walls, stud partitions, dry-lined walls, or shower cubicles/panels.

Siting of the Shower and Accessories (Fig. 4)

Position the mixer valve so all controls are within comfortable reach of the user. Accessories like the showerhead, riser rail, or fixed showerhead can be positioned above or to either side of the shower.

Supply Pipework

Complete pipework to the shower area, deciding on the shower position and pipe entry direction (rising, falling, or rear). Hot and cold water pipes should not be permanently attached to the wall within one metre of the valve until installation is complete, allowing for final adjustment.

Rear Entry Supplies (Fig. 5)

Using a spirit level, mark incoming hot and cold water supply pipes at approximately 150mm centres.

Built-in Fitting (Fig. 6)

Typical wall thicknesses for built-in fittings are:

Maximum tile thickness is 10mm. For stud partitions or hollow walls, consider rear supports. Use the supplied cover plate or tiling shroud as a template for cutting the opening. The building-in depth for the mounting plate is from the plaster finish, dependent on tile and adhesive thickness.

The inlet elbows have 'O' ring seals (Fig. 7) and do not require PTFE tape. Ensure the filter is fitted between the elbow and nut connector to prevent leaks. Routing incoming and outgoing pipework from the same direction eases cleaning and maintenance.

Installation in a Solid Wall

Decide on the shower position and determine the pipe entry (top, bottom, or rear). The hole size should accommodate the valve, fittings, and allow pipe connection. Remove plaster and brickwork to the required depth, chasing out areas for pipework and fittings.

Note: The valve body requires a deeper recess than fittings. The outlet pipework must end in a suitable 15mm x 1/2" BSP female thread fitting (not supplied). Offer the valve body to the wall, mark fixing holes, drill, plug, and route pipework.

Installation in a Hollow Wall (Fig. 8)

Determine shower position and pipe entry. For hollow walls, consider rear supports. Mark pipe routes. Cut plasterboard using the cover plate/tiling shroud as a template. Offer the valve body, mark fixing holes, drill, and route pipework.

Installation in a Panel or Cubicle

Consider rear supports for panel/cubicle installations. Ensure at least 65mm space from the panel surface to the rear of the valve body. Access to the rear of the valve is essential. Cut one hole for controls, using the cover plate as a template, extending it for filter access. Route pipework.

Fitting the Mixer

Mounting Plate Installation (Fig. 9)

Mark positions for the four mounting plate screws (two diagonal holes may suffice for solid brick walls). Drill and plug holes using provided wall plugs (use appropriate masonry drill bits; special plugs/bits for plasterboard/soft blocks). Secure the mounting plate with supplied screws.

Connecting Pipework (Fig. 10, Fig. 11)

Inlet elbows have 'O' ring seals and do not require PTFE tape. Ensure all supply pipework is flushed before fitting the mixer. Connect the hot water supply to the 'HOT'/'H'/red/orange inlet and the cold water supply to the 'COLD'/'C'/blue inlet. Tighten all compression fittings and grub screws to secure the mixer to the mounting plate.

Fitting the Bulkhead or Fixed Head Pipework

Outlet Pipework

Complete outlet pipework ending in a 15mm x 1/2" BSP female thread elbow (Fig. 13). This fitting is not supplied and requires selection based on installation type (solder or compression). Refer to fixed showerhead fitting instructions separately.

Bulkhead Installation (Fig. 14)

Screw the supplied male connector into the female fitting using PTFE tape for a watertight joint. The connector has a shoulder; if fitting into a flush wall, allow an extra 8mm. The connector should protrude 8mm to 13mm from the finished wall surface.

Leak Testing

Direct the mixer outlet to waste. Open isolating valves and check for leaks, rectifying any found.

Making Good

Make good the wall and complete tiling. The product includes a tiling shroud to prevent damage. Accurate tile cuts allow the faceplate to seal the hole, enabling valve removal without breaking tiles. Ensure grout lines around the valve are flush with tiles for a smooth sealing surface for the coverplate.

Bulkhead Assembly

Screw the bulkhead elbow to the bulkhead body with three screws. Temporarily screw the assembly onto the threaded connector to mark fixing holes. If the thread protrudes too far, it can be cut with a hacksaw. Unscrew the assembly, check pipe location, drill and plug holes. For hollow walls, consider silicon seal on the bulkhead back. Apply PTFE tape to the threaded connector. Screw the bulkhead assembly tight to the wall, aligning fixing holes, and secure with two screws (Fig. 15). Clip the cover onto the bulkhead, ensuring legs locate correctly.

Flow Regulation

Flow regulators are supplied for high-pressure systems to reduce flow rate and assist economy. To fit, unscrew elbows, place regulators correctly into inlet connectors with retaining washers, and reassemble elbows (Fig. 16).

Anti-Scald Protection

Regular testing prevents scalding. Set the mixer blend temperature to 38°C and isolate the cold water supply; the outlet flow should reduce to a safe level.

Fitting the Coverplate

Fit the coverplate over the valve body, sliding it tight to the wall. Ensure the seal stays in place (liquid soap can ease this). The coverplate has a silicon sponge backing for sealing. Fit and tighten the adjustment lever into the mixer body (Fig. 17).

Commissioning (TMV3)

This mixer conforms to NHS Estates Model Engineering Specification D08 for healthcare premises. Ensure all pipework is flushed before commissioning. The maximum temperature should not exceed 41°C. Start water flow, ensure hot/cold supplies are open and at design temperature/pressure. Set temperature control to maximum, let water stabilize, then adjust to desired maximum showering temperature. The mixer has an adjustable temperature stop (factory set to 41°C) for user safety. Turn the shower on/off several times to verify the setting and record commissioning data. Perform a thermal shut-off test by shutting off the cold supply; flow should stop or reduce to a trickle, with temperature below 43°C. If temperature exceeds 43°C, contamination may be affecting the hot supply shut-off; refer to maintenance or contact Customer Service. For domestic installations not requiring D08, the maximum temperature setting should not exceed 46°C.

Temperature Adjustment Range

Mixed water temperature is adjustable from cold to a preset top limit (factory set at approx. 38°C), with full anti-scald protection.

Adjusting the Maximum Temperature Setting (and fitting the lever)

The mixer valve comes with the flow and temperature knob fitted, with the maximum temperature stop factory set to 38°C (adjustable during installation). The lever is supplied loose.

To adjust: Use an Allen key to loosen the retaining screw and remove the temperature control knob (Fig. 18). Slightly loosen the end of the thermostatic cartridge with a spanner. Insert an Allen key into the cartridge end and turn as shown in Fig. 19 to adjust temperature. Retighten the cartridge end. Refit the temperature control housing, aligning the lever hole at 6 o'clock. Secure with the retaining grub screw and fit the lever. Turn the flow control off when satisfied.

Note: For 'Tamper proof' lever fitting, tighten the lever using a suitable Allen key into the recessed 'hex' end. DO NOT OVERTIGHTEN THE LEVER.

Operating the Shower (Fig. 20)

To start the shower, turn the On/Off Temperature control anti-clockwise. Rotate the temperature control clockwise for cooler and anti-clockwise for hotter water. CAUTION: Exposed metal surfaces may become hot during use.

Approvals

This mixer valve complies with D08 and WRAS requirements.

Designation

Approved for HP-S (High Pressure Shower) and LP-S (Low Pressure Shower).

Marking

The unique reference is 86002260, laser marked on the valve body.

Flow Chart

The flow chart illustrates the relationship between pressure (bar) and flow rate (l/min) at 38°C with the flow control fully open and no flow regulator fitted.

Dimensions

Diagrams show the overall dimensions of the mixer valve, including height, depth, and diameter of the mounting plate.

Spare Parts

A list of available spare parts with their reference numbers and part numbers is provided:

In-Service Testing

Regular maintenance ensures continued performance and scald prevention. A thermostatic mixing valve's need for maintenance may not be apparent during normal use but can surface during disruptions in water supply.

Purpose

In-service tests monitor and record the thermostatic mixing valve's performance, indicating when service work is needed.

Procedure

Using the same equipment as commissioning, adjust mixed water temperature according to instructions. Record:

• Hot and cold water supply temperatures.
• Mixed water temperature at the largest draw-off flow rate.
• Mixed water temperature at a smaller draw-off flow rate.

If mixed water temperature changes significantly (e.g., > 1 K) from previous tests, record the change and check:

• In-line or integral strainers are clean.
• In-line or integral check valves and anti-back siphonage devices are functional.
• Isolating valves are fully open.

For acceptable mixed water temperatures, complete the following:

• Record hot and cold water supply temperatures.
• Record mixed water temperature at largest and smaller draw-off flow rates.
• Isolate the cold water supply and monitor mixed water temperature.
• Record the maximum and final stabilized temperatures achieved.
• Record equipment used.

If the final mixed water temperature exceeds previous results by more than 2 K, service is indicated. In-service tests should be frequent enough to identify needs before unsafe temperatures occur. Refer to Annex F of D08 for guidance.

Frequency of In-Service Tests

General: Conduct tests 6-8 weeks after commissioning, then again 12-15 weeks after commissioning.

Based on Results:

• No significant changes (≤ 1 K): Defer next test to 24-28 weeks.
• Small changes (1-2 K) in one period: Defer next test to 24-28 weeks.
• Small changes (1-2 K) in both periods: Next test at 18-21 weeks.
• Significant changes (> 2 K) or service needed: Next test at 18-21 weeks.

Future test intervals should be based on achieving minimal temperature changes.

Cleaning

Triton recommends cleaning all products with warm, soapy water. Avoid abrasive or aggressive chemical cleaners, as they can damage the finish and invalidate the guarantee.

Cleaning the Filters (Fig. A)

This should be performed by a qualified person. Turn off water supplies. Remove the unit from inlet fittings to access filters. Remove Hot and Cold elbows. Wash filters thoroughly under running water with a suitable brush to remove debris. Reassemble the shower.

Disinfection

If chlorine is used for disinfection, follow all relevant guidelines and approved codes of practice. Failure to comply may invalidate your guarantee.

WARNING: DO NOT use 'powerful' abrasive or solvent cleaning fluids, as they may damage fittings.

Fault Finding

The following issues can be addressed by a competent person:

For professional qualified installers only:

Commissioning, Maintenance and In-Service Testing Record

Fields are provided for recording installation details, commissioning data (temperatures, pressures), equipment used, and inspection/maintenance history.

UK Service Policy

In case of a product fault or complaint, contact Triton Customer Service on 024 7637 2222 with product details and fault description. A qualified engineer may be arranged. Ensure installation complies with the Triton installation guide. Charges may apply for non-product related failures, abortive visits, or if the product is out of guarantee. Proof of purchase is required for guarantee claims.

Replacement Parts Policy

Triton retains functional spares for a reasonable period. Spare parts can be ordered via the online store or by telephone. Payment methods include credit/debit card, cheque, or postal order. Verify requirements using the user guide before ordering.

Triton Standard Guarantee

Triton guarantees the product against manufacturing defects for 5 years (domestic use only) from purchase, provided it's installed correctly. Accessories (shower heads, hoses, rails) have a 1-year guarantee. The guarantee covers repair or replacement of defective parts, provided the product is maintained and operated correctly and has not been misused or damaged. It applies only to UK installations and not commercial use. Statutory rights are unaffected.

What is not covered:

Breakdowns due to misuse, neglect, incorrect installation, use of electricity/gas/water, or incorrect control settings. Claims for missing parts after installation. Damage from foreign objects. Loss due to parts unavailability. Consequential loss. Abortive call-out charges. Costs for routine maintenance, adjustments, or damage from corrosion, furring, frost, or freezing. Call-out charges where water supply cannot be isolated.

For the latest Terms & Conditions, visit: www.tritonshowers.co.uk/terms

Contact Information:

• Customer Service: 024 7637 2222
• Trade Installer Hotline: 024 7637 8344
• Website: www.tritonshowers.co.uk
• Email: serviceenquiries@tritonshowers.co.uk, technical@tritonshowers.co.uk

Triton reserves the right to change product specifications without prior notice.