Roca A5A2K18C00 T-500 Built-in Thermostatic Mixer for Bath-Shower (2-Way) Instruction Manual

1. Introduction

This manual provides essential information for the safe installation, operation, and maintenance of your Roca A5A2K18C00 T-500 Built-in Thermostatic Mixer. Please read these instructions carefully before installation and retain them for future reference. This product is designed for bath-shower applications, featuring a 2-way automatic diverter for precise water flow control and consistent temperature.

2. Safety Information

• Installation should only be performed by a qualified professional plumber in accordance with local plumbing and building codes.
• Ensure the main water supply is turned off before commencing any installation or maintenance work.
• Verify that all connections are secure and watertight to prevent leaks.
• Do not use abrasive cleaners or solvents on the product's surface, as this may damage the finish.
• The thermostatic mixer is designed to deliver water at a constant temperature. However, always test the water temperature with your hand before use, especially for children or individuals with sensitive skin.

3. Product Overview

The Roca A5A2K18C00 T-500 is a high-quality built-in thermostatic mixer designed for bath and shower systems. It features two controls: one for temperature and one for flow and diverter function, all integrated into a sleek chrome escutcheon.

Figure 1: Front view of the Roca A5A2K18C00 T-500 Built-in Thermostatic Mixer, showcasing its chrome finish and dual control knobs.

Key Features:

• Thermostatic Control: Maintains a constant water temperature, preventing sudden changes.
• 2-Way Automatic Diverter: Easily switch between two water outlets (e.g., bath spout and shower head).
• Built-in Design: Provides a clean, minimalist aesthetic by concealing the main body within the wall.
• Water and Energy Saving: Designed for efficient water and energy consumption.
• Durable Construction: Made from brass with a chrome finish for longevity and aesthetic appeal.

4. Setup and Installation

The Roca A5A2K18C00 is designed for wall-mounted installation and includes a built-in sub-assembly and escutcheon. Due to the complexity of plumbing installations, it is highly recommended that this product be installed by a certified professional to ensure proper function and compliance with all safety standards.

Figure 2: Technical drawing illustrating the dimensions and built-in requirements for the Roca A5A2K18C00 mixer. Minimum installation depth is 55mm, maximum is 86mm, and the escutcheon diameter is 160mm.

General Installation Steps (for professional guidance):

1. Prepare the Wall: Create an opening in the wall according to the dimensions provided in the technical drawing (Figure 2) to accommodate the built-in sub-assembly.
2. Install Sub-Assembly: Secure the built-in sub-assembly within the wall opening, ensuring it is level and at the correct depth. Connect the hot and cold water supply lines to the designated inlets on the sub-assembly.
3. Connect Outlets: Connect the two water outlets from the sub-assembly to your bath spout and shower head.
4. Test for Leaks: Before closing the wall, turn on the main water supply and check all connections for leaks.
5. Install External Components: Once the wall is sealed, attach the escutcheon and the control handles to the sub-assembly.
6. Calibrate Thermostat: Follow the specific instructions provided with the product for calibrating the thermostatic cartridge to ensure accurate temperature control.

5. Operating Instructions

Your Roca T-500 thermostatic mixer is designed for intuitive operation, providing precise control over water temperature and flow.

Temperature Control:

• The lower handle typically controls the water temperature.
• Rotate the handle to adjust the temperature. Turning it towards the left (counter-clockwise) usually increases the hot water, while turning it towards the right (clockwise) decreases it.
• Many thermostatic mixers have a safety stop (often at 38°C / 100°F) to prevent accidental scalding. To exceed this temperature, you may need to press a button or override the stop while turning the handle.

Flow and Diverter Control:

• The upper handle typically controls the water flow and acts as the automatic diverter.
• Rotate the handle to turn the water on or off and to adjust the flow rate.
• To switch between the two outlets (e.g., bath spout and shower head), rotate the handle to the desired position. The automatic diverter will direct the water flow accordingly.

6. Maintenance

Regular cleaning and proper care will ensure the longevity and aesthetic appeal of your Roca thermostatic mixer.

Cleaning Instructions:

• Clean the chrome surfaces regularly with a soft cloth and mild soap or a non-abrasive cleaner specifically designed for chrome finishes.
• Rinse thoroughly with clean water and dry with a soft cloth to prevent water spots.
• Do not use abrasive sponges, scouring pads, or cleaners containing harsh chemicals, acids, or solvents, as these can damage the chrome finish.
• Periodically check the escutcheon for any signs of water ingress and ensure it is properly sealed against the wall.

7. Troubleshooting

If you encounter issues with your thermostatic mixer, refer to the common troubleshooting tips below. For persistent problems, contact a qualified plumber or Roca customer support.

• No Water Flow or Low Pressure:
  • Check if the main water supply is fully open.
  • Inspect the water inlets for blockages or debris.
  • Ensure the flow control handle is fully open.
• Inconsistent Water Temperature:
  • Verify that both hot and cold water supplies are connected and functioning correctly.
  • The thermostatic cartridge may require cleaning or recalibration. This should be done by a professional.
  • Check for sufficient hot water supply from your water heater.
• Water Not Diverting Correctly:
  • Ensure the diverter handle is fully rotated to the desired position.
  • The diverter mechanism may be obstructed or faulty. Professional inspection is recommended.
• Leaks from the Escutcheon:
  • Turn off the water supply immediately.
  • This indicates an issue with the internal connections or seals. Contact a professional plumber for repair.

8. Specifications

9. Warranty and Support

Roca products are manufactured to high-quality standards and are backed by a manufacturer's warranty. For specific warranty terms and conditions applicable to your region, please refer to the documentation included with your purchase or visit the official Roca website.

For technical assistance, spare parts, or any inquiries regarding your Roca A5A2K18C00 T-500 thermostatic mixer, please contact Roca customer support directly. Contact information can typically be found on the Roca website or in your product packaging.

Figure 3: The official Roca brand logo.