Geberit 115.260.21.1
Geberit Kappa50 Dual-Flush Actuator User Manual
Model: 115.260.21.1
1. Introduction
This manual provides instructions for the installation, operation, and maintenance of the Geberit Kappa50 Dual-Flush Actuator, Model 115.260.21.1. This actuator is designed for use with Geberit UP200 concealed tanks and offers water-saving dual-flush functionality.

Figure 1: Front view of the Geberit Kappa50 Dual-Flush Actuator. It features a polished chrome finish with two rectangular flush buttons, one larger for a full flush and one smaller for a partial flush, indicating its dual-flush functionality. The Geberit logo is visible in the top right corner.
2. Setup and Installation
The Geberit Kappa50 Dual-Flush Actuator is intended for installation with a Geberit UP200 concealed tank. Professional installation is recommended to ensure proper function and compliance with local plumbing codes.
2.1 Components Included
- Kappa50 Dual-Flush Actuator Panel
- 2 Actuator Rods
- 2 Distance Bolts
- Mounting Frame
- Fastening Material
2.2 Installation Steps (General Guidelines)
- Ensure the Geberit UP200 concealed tank is correctly installed and accessible.
- Attach the mounting frame to the concealed tank according to the tank's specific instructions.
- Insert the two actuator rods into their designated positions on the flush valve mechanism within the tank.
- Secure the two distance bolts to the mounting frame. These bolts will support the actuator panel.
- Carefully align the Kappa50 actuator panel with the mounting frame and press it into place until it clicks securely. Ensure the actuator rods engage correctly with the flush buttons.
- Verify that both flush buttons operate smoothly and return to their original position after being pressed.
For detailed, step-by-step installation instructions, refer to the specific manual provided with your Geberit UP200 concealed tank, as the actuator installation is integrated with the tank system.
3. Operating Instructions
The Geberit Kappa50 Dual-Flush Actuator provides two flushing options to conserve water.
- Full Flush: Press the larger rectangular button on the left side of the actuator panel. This activates a full volume flush, suitable for solid waste.
- Partial Flush: Press the smaller rectangular button on the right side of the actuator panel. This activates a reduced volume flush, suitable for liquid waste, thereby saving water.
The actuator operates via top/front actuation, meaning the buttons are pressed directly on the face of the panel.
4. Maintenance
Regular cleaning and simple maintenance will help preserve the appearance and functionality of your Geberit Kappa50 Dual-Flush Actuator.
4.1 Cleaning the Actuator Panel
- Use a soft, damp cloth and a mild, non-abrasive cleaning agent.
- Avoid using harsh chemicals, abrasive cleaners, or scouring pads, as these can damage the polished chrome finish and plastic components.
- Wipe the surface gently and dry thoroughly with a soft cloth to prevent water spots.
4.2 Internal Components
The internal mechanisms (actuator rods, flush valve) are generally maintenance-free. If issues arise with flushing, refer to the Troubleshooting section or consult a qualified plumber.
5. Troubleshooting
This section addresses common issues you might encounter with your dual-flush actuator.
| Problem | Possible Cause | Solution |
|---|---|---|
| Buttons are stiff or do not return to position. | Misalignment of actuator rods or mounting frame. Debris under buttons. | Carefully remove the actuator panel and check for obstructions. Realign the panel and rods. Ensure proper installation of the mounting frame. |
| Flush is weak or incomplete. | Issue with the flush valve inside the concealed tank. Water supply problem. | Check the water supply to the tank. Consult the Geberit UP200 tank manual for flush valve adjustments or troubleshooting. Contact a plumber if the issue persists. |
| Water continuously runs into the toilet bowl. | Flush valve not sealing correctly. | This is typically an issue with the flush valve within the concealed tank, not the actuator itself. Refer to the Geberit UP200 tank manual or contact a qualified plumber. |
If you are unable to resolve an issue using these steps, it is recommended to contact a qualified plumber or Geberit customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | 115.260.21.1 |
| Brand | Geberit |
| Material | Plastic |
| Exterior Finish | Polished Chrome |
| Product Dimensions (L x W x H) | 8.27 x 5.51 x 0.39 inches |
| Item Weight | 1.75 pounds |
| Actuation Type | Top/Front |
| Flush Type | Dual Flush |
| Compatibility | Geberit UP200 concealed tank |
| Specification Met | WaterSense |
| UPC | 392541674308 |
7. Warranty Information
The Geberit Kappa50 Dual-Flush Actuator is covered by a Limited Lifetime Warranty. This warranty covers defects in materials and workmanship under normal use and service. For specific terms, conditions, and to make a warranty claim, please refer to the official warranty documentation provided with your product or visit the Geberit official website.
8. Customer Support
If you require further assistance, have questions not covered in this manual, or need to order replacement parts, please contact Geberit customer support or visit their official website.
Geberit Official Website: www.geberit.com
When contacting support, please have your product model number (115.260.21.1) and purchase information readily available.
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