Wall-mounted toilets have become increasingly popular in modern bathroom design due to their space-saving benefits and aesthetic appeal. While these systems may appear complex, the provided documentation outlines a clear and detailed process for installing a wall-mounted toilet with an in-wall concealed tank system. This article is based exclusively on the technical specifications, installation procedures, and practical insights from the provided source material.
Overview of Wall-Hung Toilet Systems
Wall-hung toilets are designed to be mounted on a wall, with the flushing mechanism and water tank concealed within the wall cavity. This system requires a robust wall structure and precise plumbing to ensure proper function and durability. According to the documentation, the Geberit in-wall tank system paired with the TOTO Aquia CT418FG wall-mounted bowl is an example of a reliable and user-friendly installation.
Key components for a wall-mounted toilet installation include:
- A wall-mounted carrier or concealed wash-down tank (e.g., Geberit 111.728.00.1)
- A flush actuator kit and wall plate (e.g., Geberit 115.777)
- A wall-hung toilet bowl (e.g., TOTO CT418FG)
- A compatible toilet seat (e.g., TOTO SS164)
- A well-framed 2×4 or 2×6 wall capable of supporting 800 lbs
- A 1/2-inch cold water supply line
- A 3-inch waste line for drainage
- A finished wall surface (tile, cement board, or gypsum board)
The installation process is described as requiring careful planning and precise execution, particularly when it comes to measuring and cutting plumbing connections. The documentation emphasizes the importance of ensuring the wall structure is reinforced to handle the weight of the system.
Step-by-Step Installation Process
1. Wall Preparation and Framing
Before beginning the installation, the wall must be prepared to accommodate the in-wall tank and plumbing connections. This involves:
- Opening the wall cavity to expose the framing and plumbing
- Ensuring the wall is reinforced to support 800 lbs
- Planning the location of the toilet based on the existing plumbing and stud layout
The documentation specifies that the wall must be constructed with 2×4 or 2×6 framing. It is also recommended to reinforce the wall structure for added stability. Once the wall is open, the water supply and waste lines must be routed appropriately.
2. Installing the In-Wall Tank and Carrier
The in-wall tank and carrier are installed within the wall cavity to house the flushing mechanism. The process involves:
- Mounting the carrier frame to the wall
- Connecting the water supply line to the tank
- Installing the waste line from the bottom of the unit
The carrier must be aligned with the intended location of the toilet bowl. The water supply line should be run vertically to the top of the unit, while the waste line should be connected from below. It is important to ensure that all connections are secure and properly sealed to prevent leaks.
3. Measuring and Cutting Plumbing Connections
The next step involves preparing the plumbing connections that will attach to the toilet bowl. This is a critical step that requires precision to ensure the toilet fits securely and functions properly.
Using the supplied plumbing connector set, the inlet and outlet seals are installed, and the fittings are cut to the appropriate length. The length of the fittings depends on the specific toilet bowl being used. The documentation suggests referring to the manufacturer's instructions or a detailed installation video for accurate measurements.
Once the fittings are cut, rubber seals are applied to form a watertight connection between the fittings and the toilet bowl. It is recommended to apply a lubricant to the inner seals to facilitate installation.
4. Mounting the Toilet Bowl
After the plumbing connections are prepared, the toilet bowl is mounted to the wall. The process involves:
- Adjusting the mounting threaded rods to the correct depth
- Placing the foam pad (if used) behind the toilet for sound insulation
- Aligning the toilet bowl with the plumbing connections
- Securing the bowl to the wall using leveling washers, steel washers, and nuts
The toilet bowl must be level to ensure proper function and aesthetics. The leveling washers are used to make fine adjustments before tightening the mounting nuts. Once the bowl is secure, the plastic covers are installed over the mounting rods to complete the installation.
5. Sealing and Finishing
After the toilet bowl is mounted, the interface between the bowl and the wall is sealed with silicone or elastomeric sealant. This step is crucial to prevent water from seeping into the wall and causing damage. The documentation notes that elastomeric sealants like Lexel set quickly and require immediate smoothing to achieve a clean finish.
Once the sealant has dried, the toilet seat is installed. The seat must be compatible with the toilet bowl and should be adjusted to ensure proper alignment and comfort.
Key Considerations for a Successful Installation
The documentation highlights several important factors to consider during the installation process:
- Wall Framing: The wall must be reinforced to support the weight of the toilet and tank system.
- Plumbing Access: The wall cavity must be accessible for routing water supply and waste lines.
- Water Supply: A 1/2-inch cold water supply line is required for the flushing mechanism.
- Waste Line: A 3-inch waste line is necessary for proper drainage.
- Wall Finish: The wall must be finished with a suitable material such as tile, cement board, or gypsum board.
For users who are not confident in their ability to complete the installation themselves, the documentation recommends seeking professional assistance. It also notes that some models may require a nearby power outlet if they include smart features such as heated seats or bidet functions.
Compatibility and Additional Features
The documentation briefly mentions the possibility of adding a smart bidet seat, such as the TOTO Washlet. These devices offer features like warm water cleansing, heated seating, and deodorization. The installation process for a bidet seat is described as relatively simple, involving the removal of the existing toilet seat, connecting the water line, and aligning the new seat with the toilet.
However, it is important to ensure that the toilet bowl is compatible with the bidet seat. The documentation advises checking the dimensions and specifications of the toilet to ensure a proper fit. Additionally, a nearby power outlet is required for the bidet to function.
Maintenance and Long-Term Care
While the documentation does not provide extensive details on maintenance, it does mention that the installed system has not required a plunger in two years of use. This suggests that a well-installed wall-mounted toilet can offer reliable performance with minimal maintenance. However, it is still important to periodically inspect the plumbing connections and seals for signs of wear or damage.
Conclusion
Wall-mounted toilets offer a modern and efficient solution for homeowners looking to maximize space and improve the aesthetic of their bathrooms. The installation process, while more involved than traditional floor-mounted toilets, is outlined in detail in the provided documentation. With careful planning and attention to detail, users can successfully install a wall-mounted toilet and enjoy the benefits of a clean, functional, and stylish bathroom.
The key to a successful installation lies in ensuring that the wall structure is properly reinforced, the plumbing connections are accurately measured and cut, and the toilet bowl is securely mounted and sealed. By following the manufacturer's instructions and consulting professional assistance when needed, homeowners can achieve a high-quality installation that meets both functional and aesthetic expectations.