1. Introduction and Overview
This manual provides essential information for the installation, operation, and maintenance of your TOTO Aquia IV Two-Piece Elongated Dual Flush Toilet, Model CST446CEMGN#01. This toilet features a skirted design, DYNAMAX TORNADO FLUSH technology, and CEFIONTECT ceramic glaze for enhanced performance and ease of cleaning. It offers a dual flush system with 1.28 GPF (gallons per flush) and 0.9 GPF options for water conservation.
Image 1.1: The TOTO Aquia IV Two-Piece Elongated Dual Flush Toilet, showcasing its modern design.
2. Safety Information
Please read all instructions carefully before beginning installation or operation. Failure to follow these instructions may result in property damage or personal injury.
- Always turn off the main water supply before attempting any installation or maintenance.
- Wear appropriate personal protective equipment, such as gloves and eye protection, during installation.
- Handle ceramic components with care to prevent chipping or breakage.
- If you are unsure about any part of the installation process, consult a qualified plumber.
- Ensure all connections are watertight to prevent leaks.
3. Package Contents
Verify that all components are present before beginning installation.
Included Components:
- Toilet Bowl
- Toilet Tank
- Tank to Bowl Hardware
- Tank to Bowl Gasket
- Outlet Socket
- Toilet Bolt Caps
Items Not Included (Required for Installation):
- Toilet Seat
- Wax Ring or Wax-Free Seal
- Toilet Mounting Bolts
- Water Supply Line
4. Installation
This section provides general guidance. Refer to the detailed installation instructions provided with your product packaging for complete steps. Professional installation is recommended.
4.1 Pre-Installation Considerations
- Rough-in Measurement: The Aquia IV is designed for a standard 12-inch rough-in. Adapters for 10-inch or 14-inch rough-ins are available for separate purchase if needed.
- Floor Preparation: Ensure the floor area where the toilet will be installed is clean, level, and free of debris.
- Water Supply: Confirm the water supply valve is accessible and in good working order.
4.2 Basic Installation Steps (Summary)
- Turn off the water supply and flush the old toilet to empty the tank and bowl. Remove the old toilet.
- Clean the flange area and install new floor bolts.
- Install the wax ring or wax-free seal onto the toilet bowl outlet.
- Carefully set the toilet bowl onto the floor bolts, ensuring a proper seal. Tighten the nuts evenly.
- Attach the toilet tank to the bowl using the provided hardware and gasket.
- Connect the water supply line to the tank fill valve.
- Install the toilet seat (purchased separately).
- Turn on the water supply and check for leaks. Flush the toilet to test operation.
Image 4.1: Product dimensions for installation planning. The toilet measures approximately 28.5 inches deep, 15.5 inches wide, and 29.5 inches high.
5. Operation
The TOTO Aquia IV features a dual flush system for efficient water usage.
5.1 Dual Flush Mechanism
- Light Flush (0.9 GPF): Press the smaller button on the top of the tank for a reduced water flush, suitable for liquid waste.
- Full Flush (1.28 GPF): Press the larger button for a full water flush, designed for solid waste.
5.2 DYNAMAX TORNADO FLUSH
This toilet incorporates TOTO's DYNAMAX TORNADO FLUSH system, which utilizes 360-degree cleaning power to effectively wash the entire bowl surface. The enhanced bowl design minimizes water flow resistance and turbulence, contributing to a quieter flush.
Image 5.1: Visual representation of the DYNAMAX TORNADO FLUSH technology, showing water swirling within the toilet bowl for comprehensive cleaning.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your toilet.
6.1 Cleaning
- CEFIONTECT Glaze: The CEFIONTECT ceramic glaze creates a super-smooth, ionized barrier that helps prevent waste from adhering to the ceramic surfaces. This reduces the frequency of cleaning and the need for harsh chemicals.
- Recommended Cleaners: Use mild, non-abrasive cleaners and a soft cloth or sponge. Avoid abrasive powders, scouring pads, or cleaners containing harsh acids or alkalis, as these can damage the CEFIONTECT finish.
- Skirted Design: The skirted design conceals the trapway, making the exterior surfaces easier to wipe clean and reducing areas where dust and grime can accumulate.
6.2 Internal Components
Periodically inspect the fill valve and flapper (or flush tower mechanism) inside the tank for wear. Replace components as needed with genuine TOTO parts to ensure proper function and water efficiency.
7. Troubleshooting
This section addresses common issues. For more complex problems, consult a qualified plumber or TOTO customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Toilet does not flush or flushes weakly. | Low water level in tank; obstructed trapway; faulty flush mechanism. | Check water supply valve is fully open. Adjust water level in tank if necessary. Clear any obstructions from the bowl or trapway. Inspect flush mechanism for damage. |
| Water continuously runs into the bowl. | Faulty flapper/flush tower seal; fill valve malfunction; water level too high. | Inspect the flapper or flush tower seal for proper seating or damage. Check the fill valve for proper operation. Adjust the water level in the tank to prevent overflow into the flush valve. |
| Leaks at the base of the toilet. | Loose mounting bolts; damaged wax ring/seal; cracked bowl. | Ensure mounting bolts are securely tightened. Replace the wax ring or seal. If the bowl is cracked, it will need replacement. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | CST446CEMGN#01 |
| Product Dimensions (D x W x H) | 28.5" x 15.5" x 29.5" |
| Material | Ceramic |
| Color | Cotton White |
| Item Weight | 81 Pounds |
| Installation Type | Floor Mounted |
| Shape | Elongated |
| Flush Type | Dual Flush (DYNAMAX TORNADO FLUSH) |
| Water Consumption | 1.28 GPF (Full) / 0.9 GPF (Light) |
| Rough-in | 12" (adapters available for 10" or 14") |
| Special Features | CEFIONTECT Ceramic Glaze, Skirted Design |
| UPC | 739268430853 |
9. Warranty and Support
For specific warranty details and customer support, please refer to the warranty card included with your product or visit the official TOTO website. Keep your proof of purchase for warranty claims.
If you require assistance with installation, troubleshooting, or replacement parts, please contact TOTO customer service through their official channels.