1. Introduction
The Ideal Standard Ceratherm T100 Shower System (Model A7542AA) is a high-quality, wall-mounted thermostatic shower system designed for comfort, safety, and durability. This manual provides essential information to ensure correct installation, efficient operation, and proper maintenance of your shower system.
2. Safety Information
- Always ensure the main water supply is turned off before attempting any installation, maintenance, or repair work.
- The system features a Cool Body function, which keeps the tap body from becoming excessively hot, enhancing user safety.
- A built-in temperature lock at 40 degrees Celsius provides anti-scald protection, preventing accidental setting of dangerously high temperatures.
- Ensure all connections are properly sealed to prevent leaks and water damage.
- Installation should be performed by a qualified professional if you are unsure about any steps.
3. Package Contents
Verify that all components are present before beginning installation:
- Ceratherm T100 Surface-Mounted Shower System unit
- Hand shower (stick type)
- Idealflex Shower hose (1750 mm length)
- Swivelling shower head (1 function, rain jet type)
- Adjustable shower holder
- Two square metal rosettes (65 x 65 mm)
- Mounting hardware and fixings
4. Setup and Installation
The Ceratherm T100 Shower System is designed for wall-mounted, surface installation using S-connectors. Follow these general steps for installation:
- Prepare the Installation Area: Ensure the water supply pipes are correctly positioned and spaced for the S-connectors. Turn off the main water supply.
- Install S-Connectors: Attach the S-connectors to the wall water outlets. Ensure they are level and correctly spaced (connection dimensions 137-163 mm).
- Mount the Shower System: Secure the main shower system unit onto the S-connectors. The unit has a projection of 382 mm from the wall.
- Attach Rosettes: Place the two square metal rosettes (65 x 65 mm) over the S-connectors to cover the wall connections.
- Install Shower Rail: Mount the shower rail to the wall, ensuring it is vertical and securely fastened using the provided fixings.
- Attach Shower Head and Hand Shower: Connect the swivelling shower head to the top of the rail and the Idealflex shower hose (1750 mm) to the main unit and the stick hand shower. Place the hand shower in its adjustable holder.
- Check for Leaks: Slowly turn on the main water supply and check all connections for any leaks.

Figure 1: Technical drawing with dimensions for installation. Note the 1/2 inch connection for the shower hose and the 137-163 mm connection spacing for the main unit.

Figure 2: Front view of the Ceratherm T100 Shower System, showing the main unit, shower rail, hand shower, and overhead shower head.
5. Operating Instructions
Your Ceratherm T100 Shower System is designed for intuitive use:
- Water Flow Control: The system features two metal handles. One handle controls the water flow rate.
- Temperature Control: The other handle is for thermostatic temperature control. Rotate it to adjust the water temperature. Red and blue markings indicate hot and cold directions. The temperature lock at 40 degrees Celsius prevents accidental scalding.
- ECO Function: The water-saving position (ECO) can be activated to reduce water consumption without significant loss of comfort.
- Diverter Unit: A switch unit with shut-off allows you to easily divert water flow between the overhead shower head and the hand shower.
- Shower Head: The main shower head provides a single rain jet type and is swivelling for adjustable coverage. It has a flow rate of 12 litres/min.
- Hand Shower: The stick-type hand shower has a flow rate of 8 litres/min (at 3 bar) and is held in an adjustable shower holder with a rotary knob.

Figure 3: Close-up of the thermostatic mixer unit, showing the temperature control and diverter handles.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your shower system:
- Cleaning: The system features an EasyClean surface. Clean regularly with a soft cloth and mild, non-abrasive soap and water. Avoid harsh chemicals, abrasive cleaners, or scouring pads, as these can damage the chrome finish.
- Limescale Prevention: The anti-limescale function helps reduce mineral buildup. For areas with hard water, periodic cleaning of the shower head nozzles and hand shower with a descaling solution (following product instructions) may be beneficial.
- Cartridge Maintenance: The FirmaFlow cartridge is designed for durability. If you experience persistent temperature fluctuations or flow issues, consult a professional for cartridge inspection or replacement.
7. Troubleshooting
If you encounter issues with your shower system, consider the following common solutions:
- Low Water Flow:
- Check if the main water supply is fully open.
- Inspect shower head and hand shower nozzles for limescale buildup or blockages. Clean as necessary.
- Ensure the ECO function is not inadvertently activated if full flow is desired.
- Inconsistent Water Temperature:
- Verify that both hot and cold water supplies are adequately pressurized.
- Ensure the thermostatic control is set correctly and not stuck at the 40-degree safety lock if higher temperatures are desired.
- If the issue persists, the thermostatic cartridge may require professional inspection or calibration.
- Leaks:
- Tighten all visible connections, ensuring not to overtighten.
- Check the condition of all rubber seals and O-rings. Replace if worn or damaged.
- If leaks originate from within the unit, professional service is recommended.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Ideal Standard |
| Model Number | A7542AA |
| Color | Chrome |
| Material | Brass (body), Metal (handles) |
| Finish Type | Chrome |
| Number of Handles | 2 |
| Item Weight | 5.7 Kilograms (12.54 pounds) |
| Mounting Type | Wall Mount, Surface-mounted |
| Projection | 382 mm |
| Rosette Size (W x H) | 65 x 65 mm |
| Shower Hose Length | 1750 mm |
| Hand Shower Flow (at 3 bar) | 8 litres/min |
| Shower Head Flow | 12 litres/min (rain jet type) |
| Temperature Resistance (continuous) | 80 degrees Celsius |
| Temperature Resistance (peak) | 95 degrees Celsius |
| Noise Behaviour | DIN 4109 Group 1 |
| Safety Features | Cool Body, Temperature Lock at 40°C, DVGW Intrinsically Safe, Reverse Current Fuse |
9. Warranty Information
The Ideal Standard Ceratherm T100 Shower System (Model A7542AA) comes with an EU Spare Part Availability Duration of 10 Years. For detailed warranty terms and conditions, please refer to the specific warranty documentation provided with your purchase. Keep your proof of purchase for any warranty claims.
10. Support
For technical assistance, spare parts, or further inquiries regarding your Ideal Standard Ceratherm T100 Shower System, please contact Ideal Standard customer service. You can find up-to-date contact information and support resources on the official Ideal Standard website: www.idealstandard.com.





