GROHE Rapido SmartBox Universal Rough-in Box (Model 35604000) Instruction Manual

1. Introduction

The GROHE Rapido SmartBox Universal Rough-in Box (Model 35604000) is a concealed installation unit designed for use with various GROHE SmartControl trim sets. This universal rough-in box provides a secure and flexible foundation for your shower or bath system, allowing for precise control of water flow and temperature. Its robust construction and thoughtful design ensure reliable performance and ease of installation within solid walls or dry cladding.

2. Safety Information

Please read all instructions carefully before installation and use. Failure to follow these instructions may result in property damage or injury. Keep this manual for future reference.

• Installation must be performed by a qualified professional in accordance with local plumbing and building codes.
• Ensure the main water supply is turned off before beginning any installation work.
• Wear appropriate personal protective equipment (PPE) such as safety glasses and gloves during installation.
• Check all connections for leaks after installation and before concealing the rough-in box.
• Do not modify the product in any way. Use only genuine GROHE replacement parts.

3. Package Contents

The GROHE Rapido SmartBox (Model 35604000) package typically includes the following components:

• GROHE Rapido SmartBox Universal Rough-in Box
• Pre-mounted flushing plug
• Protective cover
• Installation instructions

Note: The final installation set (trim, handles, etc.) is sold separately and is not included with this rough-in box.

4. Setup & Installation

The GROHE Rapido SmartBox is designed for concealed installation within a wall. Proper planning and execution are essential for optimal performance.

4.1. Planning the Installation Location

Consider the desired height and position of the final trim set. Ensure sufficient space within the wall for the rough-in box and plumbing connections. The installation depth for the SmartBox is between 75 mm and 105 mm (approximately 3 to 4.1 inches).

Figure 4.1: Technical drawing showing the dimensions and installation depth of the GROHE Rapido SmartBox. Note the minimum and maximum installation depths of 75mm and 105mm respectively.

4.2. Mounting the Rough-in Box

The SmartBox offers flexible fixing options for both solid walls and dry cladding constructions. Securely fasten the box to the wall studs or a suitable mounting plate, ensuring it is level and plumb. The box features multiple mounting points for stability.

Figure 4.2: Illustration of multiple GROHE Rapido SmartBoxes installed within a wall framing, demonstrating typical installation in a bathroom setting.

4.3. Water Connections

Connect the hot and cold water supply lines to the designated inlets on the SmartBox. The box is clearly marked for hot (red) and cold (blue) water connections. Ensure all connections are watertight using appropriate plumbing techniques and materials.

• The SmartBox features G 1/2 connections for water inlets and outlets.
• The pre-mounted flushing plug should remain in place during initial installation and flushing to prevent debris from entering the system.
• The box is designed with 3 outlets, allowing for connection to various shower components (e.g., hand shower, overhead shower, bath spout).

Figure 4.3: Detailed front view of the SmartBox, highlighting the clearly marked hot and cold water inlets and the various outlet configurations (A, B, C, D, E) for different shower functions.

Figure 4.4: An example of the GROHE Rapido SmartBox with copper pipes connected to the hot and cold water inlets, ready for integration into the plumbing system.

4.4. Flushing and Leak Testing

Before closing the wall, it is critical to flush the system and perform a thorough leak test. Turn on the main water supply and check all connections for any signs of leakage. Address any leaks immediately. Once confirmed leak-free, the wall can be closed, and the final trim set can be installed according to its specific instructions.

5. Operation

The GROHE Rapido SmartBox is a concealed rough-in unit and does not have direct operational controls. Its function is to provide the necessary water connections and internal components for a compatible GROHE SmartControl trim set (sold separately). Once the trim set is installed, its controls will regulate the water flow and temperature delivered through the SmartBox.

Refer to the instruction manual provided with your specific GROHE SmartControl trim set for details on its operation.

6. Maintenance

As a concealed unit, the GROHE Rapido SmartBox requires minimal maintenance once properly installed. However, periodic checks are recommended:

• Leak Inspection: If you notice any signs of water leakage around the shower or bath area, it is advisable to have a qualified plumber inspect the concealed rough-in box and connections.
• Flushing: If the water supply to your home is interrupted for maintenance, it is good practice to flush the system once water is restored to clear any sediment.
• Professional Servicing: For any internal issues or concerns, contact a certified GROHE service technician or a qualified plumber.

7. Troubleshooting

This section addresses common issues that may arise during or after the installation of the GROHE Rapido SmartBox. For issues related to the final trim set, refer to its specific manual.

7.1. Water Leakage

• Cause: Improperly sealed connections during installation.
• Solution: Turn off the main water supply. Access the rough-in box (if possible) and re-tighten or re-seal all water connections. If the leak persists, professional assistance is required.

7.2. No Water Flow / Low Water Pressure

• Cause: Main water supply not fully open, debris in pipes, or issues with the final trim set.
• Solution: Ensure the main water supply is fully open. If the issue is with the trim set, consult its manual. If the problem is suspected to be within the rough-in box or supply lines, professional inspection may be necessary.

7.3. Difficulty Installing Trim Set

• Cause: Rough-in box not installed at the correct depth or not perfectly level/plumb.
• Solution: Verify the installation depth (75-105 mm) and alignment. Minor adjustments might be possible with the trim set, but significant misalignment may require re-installation of the rough-in box.

8. Specifications

9. Warranty Information

GROHE products are manufactured to the highest quality standards and are backed by a manufacturer's warranty. The specific terms and duration of the warranty may vary by region and product type. Please refer to the official GROHE website or the warranty card included with your purchase for detailed warranty information.

Keep your proof of purchase for any warranty claims.

10. Customer Support

For technical assistance, spare parts, or further information regarding your GROHE Rapido SmartBox, please contact GROHE customer support:

• Website: Visit the official GROHE website for product documentation, FAQs, and contact details.
• Phone: Refer to the GROHE website for local customer service telephone numbers.
• Professional Assistance: Always consult with a qualified plumber or certified GROHE service technician for installation or complex troubleshooting.