Introducció
This manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of your TOTO TWT172M DuoFit In-Wall Tank Unit. Please read these instructions thoroughly before beginning installation or use to ensure safe and efficient operation. The TOTO DuoFit In-Wall Tank Unit is designed to provide a concealed flushing system for wall-hung toilets, offering a sleek and minimalist bathroom aesthetic.
Informació de seguretat
Always adhere to local plumbing and building codes during installation. Professional installation by a licensed plumber is highly recommended. Failure to follow these instructions could result in property damage or personal injury.
- Ensure the water supply is turned off before any installation or maintenance.
- Utilitzeu equips de protecció individual (EPI) adequats, com ara guants i ulleres de protecció.
- Verify all connections are secure and leak-free before restoring water supply.
- Do not overtighten fittings, as this can cause damage.
- Mantingueu les peces petites allunyades dels nens.
Configuració i instal·lació
The TOTO TWT172M DuoFit In-Wall Tank Unit is designed for concealed installation within a wall structure. This unit includes a robust steel frame and a copper supply line for durability and reliable performance.
Components acabatsview
The unit consists of an in-wall tank, a sturdy support frame, and a copper supply line. It is designed to integrate with compatible TOTO wall-hung toilet bowls and flush plates (sold separately).

Image: The TOTO DuoFit In-Wall Tank Unit, showing the blue steel frame, white tank, and copper supply line connection point.
Passos d'instal·lació (directrius generals)
- Muntatge del marc: Securely mount the steel support frame to the structural studs within the wall according to the provided template and local building codes. Ensure the frame is level and at the correct height for the chosen wall-hung toilet.
- Connexió al subministrament d'aigua: Connect the copper supply line to the main water supply. Ensure all connections are watertight.
- Connexió de drenatge: Connect the toilet drain outlet to the building's waste system.
- Instal·lació del dipòsit: The tank unit is integrated into the frame. Ensure all internal tank components are correctly seated.
- Acabat de paret: Once the frame and plumbing are installed and tested, the wall can be finished around the frame, leaving access for the flush plate and toilet bowl connections.
- Instal·lació de la tassa del vàter i la placa de descàrrega: Install the wall-hung toilet bowl onto the frame's mounting bolts and connect the flush plate to the tank's flushing mechanism.

Image: The TOTO DuoFit In-Wall Tank Unit shown with a wall-hung toilet bowl and a dual-flush plate installed, demonstrating the complete concealed system.
Instruccions de funcionament
The TOTO DuoFit In-Wall Tank Unit operates in conjunction with a compatible dual-flush plate. This system allows for two flushing options to conserve water.
Rentar el WC
- Full Flush: Press the larger button on the flush plate for a full flush, typically used for solid waste.
- Llum enrasada: Press the smaller button on the flush plate for a light flush, typically used for liquid waste, conserving water.

Image: The TOTO DuoFit In-Wall Tank Unit with a dual-flush plate featuring two circular buttons, indicating full and light flush options.
Manteniment
Regular maintenance ensures the longevity and optimal performance of your in-wall tank unit.
- Neteja: Clean the visible parts of the flush plate and toilet bowl regularly with mild, non-abrasive cleaners. Avoid harsh chemicals that can damage finishes.
- Components interns: For internal tank maintenance (e.g., float valve, flush valve), access is typically gained by removing the flush plate. Consult a qualified plumber for internal repairs or adjustments.
- Comprovació de fuites: Periodically check for any signs of leaks around the toilet bowl base or flush plate area. Address any leaks immediately to prevent water damage.
Resolució de problemes
Refer to the following table for common issues and their potential solutions. For complex problems, contact a professional plumber.
| Problema | Causa possible | Solució |
|---|---|---|
| El vàter no funciona o funciona amb poca energia | Low water level in tank, obstructed flush valve, flush plate mechanism issue. | Check water supply valve. Inspect flush valve for obstructions. Ensure flush plate is correctly installed and engaging the mechanism. |
| Continuous running water | Faulty fill valve, flush valve not sealing properly. | Inspect fill valve for proper operation. Clean or replace flush valve seal. |
| Visible leaks | Loose connections, damaged seals or pipes. | Turn off water supply. Tighten connections. Inspect and replace any damaged seals or components. |
Especificacions
- Marca: TOTO
- Número de model: TWT172M (Item Model Number: WT172M)
- Dimensions del producte: 20.5 "P x 14.5" W x 14.5" H
- Material: Copper (supply line), Polyvinyl Chloride (seat material type, though this refers to a component, the tank itself is typically durable plastic/composite)
- Color: White (tank unit)
- Tipus d'instal·lació: Muntat a la paret
- Forma: Rectangular (tank unit)
- Pes de l'article: Approximately 0.16 ounces (4.54 g) - Note: This weight likely refers to a specific component, not the entire tank unit.
- UPC: 739268341333
Informació de la garantia
The TOTO TWT172M DuoFit In-Wall Tank Unit is covered under TOTO's 1 Year Limited Warranty. This warranty covers defects in materials and workmanship under normal use and service. For full warranty details and terms, please refer to the official TOTO warranty documentation or contact TOTO customer service.
Suport
For technical assistance, replacement parts, or further inquiries regarding your TOTO TWT172M DuoFit In-Wall Tank Unit, please contact TOTO customer service. You can find contact information on the official TOTO weblloc web o a través del vostre distribuïdor de productes.
TOTO Oficial Weblloc: www.totousa.com





