Bristan Shower Installation and User Guides
Model: DIV SHXDIVCTFF BLK (D1) / WMNT12 / WMNT12 SQ / Rigid & Telescopic Riser Kits
Bristan Bar Showers with Wallmount 12 Fixing Kit (WMNT12)
Specifications
Dynamic Water Pressure: Min: 1.0 bar, Max: 5.0 bar
Maximum Static Pressure: 10.0 bar
Inlet Water Temperature: Min 5°C; Max 25°C. Recommended 60°C; Max 65°C.
Important Note: Inlet hot water must be at least 10°C above the required blend temperature.
Factory Pre-set Temperature: 38°C
Inlet Connections: 1/2" Compression
Inlet Dimensions: 150mm Centres
Tools Required
- Pencil
- Flat head Screwdriver
- Drill
- Cross head Screwdriver
- Spanner
- Pipe Cutter
- Hexagonal Keys
- Socket Spanner
Pack Contents
- 1x Fixed Head
- 1x Handset
- 1x Hose
- 2x Wall Brackets
- 2x Grub Screws
- 1x Fixing Plate
- 1x Wall Arm
- 1x Diverter Valve
- 1x Concealing Cap
- 1x Isolator
- 1x Olive
- 2x Shrouds
- 8x Screws
- 8x Wall Plugs
Operation
Controls for 'On - Fixed Head' and 'On - Handset'. Arrows indicate turning handles for flow and temperature adjustment.
Prior to Installation
Products are safe if installed, operated, and maintained correctly.
Must comply with Water Supply (Water Fittings) Regulations (Northern Ireland) 2009 and (Scotland) Byelaws 2014. Visit www.wrasapprovals.co.uk/approvals-directory for full requirements.
Flush pipework thoroughly to remove swarf/solder before installation. Ensure full access for maintenance. Fit isolation valves.
Before drilling: check for hidden electrical wires, cables, or water pipes using an electronic detector.
If using power tools: Wear eye protection ?, unplug equipment after use.
Keep electrical equipment away from water. Keep blow-lamp flame well away from the product.
If in doubt, contact a registered plumber, Local Water Authority, or The Institute of Plumbing (64 Station Lane, Hornchurch, Essex, RM12 6NB, Tel: 01708 472791).
Product must not be modified, as this invalidates the guarantee.
Spares
Contact Customer Services at 0330 026 6273 for spare parts.
Important Safety Information
Read and retain these instructions.
Products are safe if installed, used, and maintained correctly.
Install in accordance with Water Supply Regulations 1999 (Water Fittings) and current by-laws. Seek professional help if unsure.
No modifications allowed, as this invalidates the guarantee.
Remove packaging and check for damage before installation.
Warning: Thoroughly flush pipework before installing the mixer valve to remove swarf/solder, to prevent damage.
Fitting isolating valves to inlet feeds is required for maintenance.
Warning: Do not operate if frozen. Do not site where freezing may occur.
When using power tools: Wear correct PPE (ear, eye, hand protection). Unplug equipment after use. Keep electrical equipment away from water.
If using a blow-lamp, keep flame well away from the product.
Contact a registered plumber, Local Water Authority, or The Institute of Plumbing if in doubt.
Installation Requirements
Refer to specific shower kit contents page for specification.
Designed for use with Bristan showers; compatibility with other kits not guaranteed and may invalidate warranty.
Must comply with current water regulations. Contact local water services provider or plumber if unsure.
Suitable Water Supply Systems:
- Gravity Fed Hot and Cold (pressure imbalance ratio 5:1 max)
- Gravity Fed Hot and Mains Cold (pressure imbalance ratio 5:1 max)
- Instantaneous water heater (combination boiler)
- Unvented System
- Pumped System
Important for Gravity Fed Systems: Minimum head (vertical distance) from cold water storage tank to outlet must be 1 metre for every 0.1 bar of minimum pressure required.
Note for Pumped Systems (Essex flange): If minimum head from tank to hot water cylinder is less than 1 metre, an Essex flange is recommended.
Flushing Pipe-work: Important: Flush supply pipe-work to clear debris before connecting the shower valve to prevent performance reduction and damage.
Diagram: Gravity Fed Hot and Cold System: Illustrates a system with a cold water storage tank, pump, and shower valve. Shows a 1m minimum head requirement from the tank to the shower outlet.
Diagram: Gravity Fed Hot and Mains Cold System: Illustrates a system with a cold water storage tank, mains hot water feed, and shower valve. Shows a 1m minimum head requirement from the tank to the shower outlet.
Diagram: Instantaneous Water Heater System: Shows a cold mains supply feeding an instantaneous water heater, which then supplies the shower valve.
Diagram: Unvented System: Shows a cold mains supply feeding an unvented cylinder, which then supplies the shower valve.
Diagram: Pumped System: Shows a cold water storage tank, pump, and shower valve. Indicates a 1m minimum head requirement from the tank to the shower outlet.
Diagram: Pumped System (with Essex flange): Shows a cold water storage tank, pump, and shower valve. Includes a note about a 1m minimum head requirement and a 50mm measurement, with a condition 'If less than 1m see note'.
Diagram Key: Isolating Valve, Reducing Valve, Shower Valve, Pump, Essex Flange.
Installation Steps
Step 1: Identify required valve position and prepare water supply pipes. Ensure pipes are 150mm apart. Use the rubber fixing plate to mark and drill holes.
Step 2: REMEMBER: Hot on the left, cold on the right. Secure the rubber backplate and backplate into place.
Step 3: Secure the isolator onto the backplate, ensuring the olive is correctly positioned over the pipework.
Step 4: Push shrouds to the back of the wall outlet, securing them against the rubber fixing plate.
Step 5: REMEMBER: To service your product! Secure the shower to the wall mount.
Note: Refer to your kit instructions for shower kit installation. If TMV approved, refer to TMV manual.
Isolation
Step 1: Remove the concealing cap from the shroud.
Step 2: Rotate the shroud to align with the isolation screw. Turn the screw to isolate water. Reverse process to turn water back on.
Temperature Setting
Step 1: Turn the temperature handle to the maximum setting and remove it.
Step 2: Turn the flow handle to the 'on' position and let the temperature stabilise.
Step 3: Turn cartridge spindle clockwise to decrease temperature. Turn anti-clockwise to increase temperature.
Step 4: Reverse steps 1-2 to reinstall the cartridge and handle. IMPORTANT: TMV showers are pre-set to 41°C. Increasing the maximum temperature may mean the shower no longer complies with the TMV scheme.
General Cleaning
Bristan products have premium finishes (polished, PVD, EPD, electroplated).
Clean regularly with warm water, mild pH-neutral liquid soap, and polish with a soft cloth. Rinse off residues from soap, toothpaste, shampoos, and shower gels promptly to prevent blemishes.
Avoid household bleaches and harsh cleaners, as they can damage the finish. Do not use abrasive cloths, scouring pads, scrub sponges, steel wool, or similar.
Nickel and pewter surfaces may be affected by dyes in cloths; avoid hanging cloths on fittings.
Shower Head Cleaning: Graphic of a shower head with rub-clean nozzles. Text advises to rub fingers across spray jets to remove scale or debris.
Maintenance - Cartridge/Valve Cleaning
Step 1: Remove temperature and flow handle.
Step 2: Remove the cartridge retaining nut and diverter cartridge. (Note: Specific cartridge tools may be needed, or check for a grub screw underneath the bar valve).
Step 3: Unscrew the flow valve.
Step 4: Remove O-rings. Soak all components in de-scaler and wash in clean water. Examine all seals and replace if needed. Use WRAS approved silicon-based grease on all seals.
Step 5: Replace nut and temperature stop, ensuring the raised side faces towards the back of the valve.
Step 6: Turn cartridge spindle clockwise to decrease temperature. Turn anti-clockwise to increase temperature.
Step 7: Slide handle onto adaptor and turn clockwise until resistance is met.
Step 8: Reverse steps 1-2 to reinstall the valve/cartridge and secure handles. Refer to 'Temperature Setting' for recalibration.
Servicing Intervals: Recommended servicing every 6-12 months, depending on water hardness, to maintain maximum performance and reduce limescale build-up.
Troubleshooting
| Symptom | Cause | Remedy |
|---|---|---|
| No flow or low flow rate | Partially closed isolation valve. | Open isolation valve. |
| Instantaneous water heater cycles on and off as flow rate or pressure is too low. | Increase water flow rate or pressure through system. | |
| Head of water is below the minimum distance required. | Refer to the specification for the minimum distance required. | |
| Are the water supply pressures balanced? | If pressures are unbalanced, a pressure reducing valve should be used for optimum performance. | |
| Hot or cold water being drawn off elsewhere causing pressure changes or instantaneous boiler temperature changes. | Do not use other water outlets when using the shower. | |
| Outlet Water Temperature too Hot/Cold | Airlock or partial blockage in the supply pipework. | Flush through pipework and filters to ensure removal of debris and any airlocks. |
| Hot/Cold water supply has failed | Check the hot and cold feeds. The shower will not work if either fails. | |
| Maximum Water Temperature needs adjusting. | Refer to the Temperature Setting section to set your desired maximum temperature. | |
| Filter/pipe blockage | Flush through pipework and filters to ensure removal of debris and any airlocks. | |
| Only hot/cold water from Shower Valve | Installation conditions outside operating parameters. | Refer to the specification for the minimum distance required. |
| Hot water temperature is less than 10°C above the required blend temperature | Adjust hot water temperature or wait for water to reheat if a stored water system is used. | |
| Shower does not turn on | Instantaneous water not igniting because the water flow rate is too low. | Increase water flow rate through the system. |
| Instantaneous water not igniting because the water pressure is too low. | Refer to the specification for system requirements. Increase water pressure through the system. Contact your boiler manufacturer. | |
| Water dripping from shower | Inlet water supplies are reversed. | Check the water inlet connections are the correct way around: Hot on the left, Cold on the right when viewed from the front. Rework pipework as necessary. |
| Filter/pipe blockage | Flush through pipework and filters to ensure removal of debris and any airlocks. | |
| This is normal for a short time after using the shower. | This is caused by residual water tension, the build up of water in the shower. | |
| If water continues to drip, possibly due to the cartridge | Remove cartridge and clean, refer to 'Maintenance' section before starting any maintenance. | |
| Closed isolation valve. | Open isolation valve. | |
| Mains water supply turned off. | Turn on mains water supply. |
Bristan Rigid Riser & Telescopic Riser Kits
Prior to Installation
Installation images are for illustrative purposes; product may differ. Refer to specific shower kit contents for details.
Kits designed for use with Bristan showers; compatibility with other brands not guaranteed and may invalidate warranty.
Installation must comply with current water regulations. Contact local water services provider or plumber if unsure.
Crucial Dimensions: Diagram shows a riser rail assembly. Text advises to loosely assemble the riser, ensure it reaches the connection point, and the bracket stays flush to the wall. Plan installation for the tallest user and measure crucial dimensions.
Important Safety Information
Please refer to the 'Important Safety Information' section under 'Bristan Bar Showers' for general safety guidelines.
Installation - Inline Diverter
Step 1: Connect the short connecting tube into the shower valve outlet (not supplied). If the outlet is 15mm, use the supplied adaptor. Ensure the nut and olive are fitted to the connecting tube. Tighten the compression nut fully using a suitable spanner.
Step 2: Fit the rigid riser to the diverter valve. Tighten the compression nut fully using a suitable spanner to ensure a watertight seal. Connect your chosen hose and handset. Check for a label on the diverter; it must be pointing upwards for correct operation. Check your rigid riser kit bracket type to move to the next stage. Important: If using this product on a low pressure system (0.2 - 0.5 bar), we recommend the NRV in the diverter be removed to ensure maximum flow.
Installation - Rigid Risers
Step 1: Assemble the riser rail using the supplied fixings. Slide any adjustable fittings, nuts, and brackets onto the rail.
Step 2a: Fit the rigid riser to the top outlet. If attaching directly to a threaded connection, use the supplied threaded adaptor. Ensure the olive is fitted and tighten the compression nut fully. IMPORTANT: Do not overtighten fixings. Wrap pipes in cloth when tightening to prevent damage to the finish.
Step 2b: Your riser rail could also be attached via grub screws. Check around the back or sides for grub screw placement.
Step 3: Attach the wall arm using the supplied fixings. Ensuring the riser is straight, adjust the bracket position if applicable and mark the position of the bracket(s) on the wall.
Step 4: Disassemble the bracket to reveal the fixings/fixing holes. Align in the marked area on the wall and mark up the fixing holes.
Step 5: REMEMBER: Check for hidden pipes and cables before drilling! Drill the fixing holes and secure the bracket/bracket fixings to the wall using the supplied fixings.
Step 6: Re-locate riser rail back onto the bracket/bracket fixings. Secure in place. Re-attach the wall arm if necessary.
Step 7: Attach the fixed head, handset (if supplied) and hose (if supplied) to the shower. Ensure the sealing washers are in place. Turn on the water supply and check all joints and connections for any leaks.
Installation - Telescopic Round Risers
Step 1: Slide the bracket, slider and nut onto the riser rail.
Step 2: Attach the riser rail to the shower and secure with the nut.
Step 3: Push the shower arm into the riser rail.
Step 4: Tighten nut to secure riser. To adjust the height, unscrew the nut and move the pole to the desired height. Tighten nut again to secure in place.
Step 5: Using a spirit level to ensure the riser is positioned correctly, use the assembled riser to mark the desired position of the bracket.
Step 6: REMEMBER: Check for hidden pipes and cables before drilling! Disassemble bracket, align on the wall in the correct position and mark location of holes to be drilled. Secure the bracket to the wall.
Step 7: Secure the riser bracket and riser rail.
Step 8: Attach the fixed head. To adjust height of head, see Step 4.
Installation - Telescopic Square Risers
Step 1: Slide the bracket and slider on to the riser rail.
Step 2: Attach the riser rail to the shower. Check for grub screw(s) placement and secure in place.
Step 3: Insert the shower arm into the riser rail.
Step 4: Tighten the grub screws at the back of the bracket to secure the shower arm. To adjust the height of the shower arm, slightly loosen the grub screws and lift the lever on the bracket. Move the arm to the desired height, lower the lever, then tighten again to secure in place.
Step 5: Using a spirit level to ensure the riser is positioned correctly, use the assembled riser to mark the desired position of the bracket.
Step 6: Drill holes. Secure the bracket to the wall.
Step 7: Secure the riser bracket and riser rail.
Step 8: Attach the fixed head. To adjust height of the shower head, see Step 4.
General Cleaning
Please refer to the 'General Cleaning' section under 'Bristan Bar Showers' for cleaning instructions.
Shower Head Cleaning: Graphic of a shower head with rub-clean nozzles. Text advises to rub fingers across spray jets to remove scale or debris.
Troubleshooting
Please refer to the 'Troubleshooting' section under 'Bristan Bar Showers' for common issues and remedies.
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