Cornat TECBW3423
Cornat Shower System User Manual
Model: TECBW3423
Introduction
This user manual provides essential information for the installation, operation, maintenance, and troubleshooting of your Cornat Shower System, model TECBW3423. Please read this manual thoroughly before installation and use to ensure proper function and safety.

Figure 1: Cornat Shower System TECBW3423. This image shows the complete shower system including the wall bar, hand shower, and thermostat fitting, all in a chrome-plated finish.
Safety Instructions
- Always turn off the main water supply before beginning any installation or maintenance.
- Ensure all connections are secure and watertight to prevent leaks.
- Do not use abrasive cleaners or harsh chemicals on the chrome-plated surfaces.
- The integrated hot water barrier at 38°C is designed to prevent scalding, especially important for households with children. Do not bypass or alter this safety feature.
- If you are unsure about any installation steps, consult a qualified plumber.
Setup and Installation
Package Contents
Verify that all components are present before beginning installation:
- Thermostat fitting
- Hand shower with 3 jet types
- Shower hose
- Wall bar with adjustable shower holder
- Mounting hardware (screws, wall plugs)
Tools Required
- Drill
- Drill bits (appropriate for wall material)
- Measuring tape
- Pencil
- Adjustable wrench
- Screwdriver
- Spirit level
Installation Steps
- Prepare the Installation Area: Turn off the main water supply. Clear the area where the shower system will be installed.
- Mount the Thermostat Fitting:
- Ensure the existing water connections are clean and ready.
- Attach the thermostat fitting to the hot and cold water outlets. Use appropriate sealing materials (e.g., PTFE tape) to ensure a watertight seal.
- Tighten connections securely with an adjustable wrench, but do not overtighten.
- Install the Wall Bar:
- Position the wall bar vertically above the thermostat fitting. The design allows for reuse of existing drill holes, if applicable.
- Mark the drilling points for the wall brackets using a pencil. Use a spirit level to ensure vertical alignment.
- Drill holes at the marked points. Insert wall plugs.
- Secure the wall brackets and then the wall bar to the wall using the provided screws.
- Attach the adjustable shower holder to the wall bar.
- Connect the Shower Hose and Hand Shower:
- Connect one end of the shower hose to the outlet on the thermostat fitting.
- Connect the other end of the shower hose to the hand shower.
- Place the hand shower into the adjustable holder on the wall bar.
- Test for Leaks: Slowly turn on the main water supply. Check all connections for any signs of leaks. If leaks are present, turn off the water, tighten the connections, and re-test.

Figure 2: Product Dimensions. This diagram illustrates the key measurements of the Cornat Shower System, including the hand shower diameter (85.5 mm), total height (650 mm), and adjustable shower holder range (410-550 mm).
Operating Instructions
Water Temperature Control
The thermostat fitting allows for precise temperature control. Use the temperature selection handle to set your desired water temperature. The integrated hot water lock at 38°C prevents accidental scalding. To exceed 38°C, you must consciously override this safety feature by pressing a button or turning past a stop on the handle.
Water Flow and Jet Type Selection
The hand shower offers three distinct jet types:
- Normal Jet: Provides an even and consistent water flow for daily rinsing.
- Soft Jet: Air-enriched for a noticeably softer and gentler water experience.
- Massage Jet: A pressurized jet with a massage function, designed to promote physical regeneration and relaxation.
To change the jet type, rotate the selector on the hand shower. The water flow can be adjusted using the flow control handle on the thermostat fitting.
Adjusting Hand Shower Height
The hand shower holder on the wall bar is infinitely adjustable. Simply slide the holder up or down the bar to set the desired height for comfortable use. The slider control makes it easy to adjust and secure the hand shower in place.
Maintenance and Care
Regular cleaning and maintenance will ensure the longevity and optimal performance of your Cornat Shower System.
Cleaning the Surfaces
- Clean chrome-plated surfaces with a soft cloth and mild soap or a non-abrasive cleaner specifically designed for bathroom fixtures.
- Rinse thoroughly with clean water and dry with a soft cloth to prevent water spots and maintain the high-gloss finish.
- Do not use: Abrasive sponges, scouring pads, harsh chemicals, acid-based cleaners, or solvents, as these can damage the chrome finish.
Descaling the Hand Shower Nozzles
The hand shower is equipped with flexible silicone nozzles for easy descaling. To remove limescale buildup:
- Simply rub the silicone nozzles with your fingers to dislodge any limescale deposits.
- For stubborn deposits, you may use a soft brush or a mild descaling solution, ensuring it is safe for chrome and silicone.
- Regular descaling ensures an unobstructed and full water beam.
Troubleshooting
This section addresses common issues you might encounter with your shower system.
| Problem | Possible Cause | Solution |
|---|---|---|
| Low water pressure |
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| Water temperature fluctuates or is incorrect |
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| Leaks at connections |
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If the problem persists after attempting these solutions, please contact Cornat customer support or a qualified professional.
Specifications
| Feature | Detail |
|---|---|
| Brand | Cornat |
| Model Number | TECBW3423 |
| Color | Chrome-plated |
| Material | Silicone (nozzles), Brass (handle), other components as specified |
| Finish Type | Polished |
| Number of Handles | 1 (for temperature/flow control) |
| Mounting Type | Wall Mount |
| Item Weight | 2.52 Kilograms (approx. 5.54 pounds) |
| Product Dimensions (L x W x H) | 27.4 x 8.19 x 2.64 inches (approximate overall package dimensions) |
| Hand Shower Head Diameter | 85.5 mm |
| Hot Water Barrier | Integrated at 38°C |
| Jet Types | Normal, Soft, Massage |
Warranty and Support
For warranty information, technical support, or replacement parts, please contact Cornat customer service. Keep your purchase receipt as proof of purchase.
Manufacturer: Cornat
Please refer to the official Cornat website or your point of purchase for the most up-to-date contact information and warranty terms.

Figure 3: Cornat Brand Logo. This is the official logo for the Cornat brand.