Correct installation of the Delta Multichoice Universal Shower Valve is essential for ensuring the system operates safely and efficiently. The valve is designed for flexibility and precision in controlling water temperature and flow, making it a popular choice among homeowners and plumbers alike. However, the installation process involves several critical steps, including proper positioning, alignment, and connection to water supplies. This guide compiles the key information from Delta’s official installation instructions and technical resources to provide a detailed, step-by-step overview of the installation process.
Understanding the Delta Multichoice Universal Shower Valve
The Delta Multichoice Universal Shower Valve is a pressure-balanced mixing valve designed to deliver consistent water temperature and prevent sudden changes in flow. It is commonly used in residential bathrooms and can be adapted for various shower configurations, including single, dual, or multi-function setups. The valve is part of the R10000 series and is compatible with Delta’s 13/14 Series trim components.
Key components of the system include:
- Rough-in body: The core of the valve system that connects to the hot and cold water lines.
- Plasterguard: A protective cover that ensures the finished wall aligns flush with the front of the valve body.
- Stringer mounting holes: Used to secure the rough-in body to the wall.
- Valve body: Contains the internal mechanisms for temperature and flow control.
- Rotational Limit Stop (RLS): A safety feature that prevents the handle from rotating beyond a set temperature, ensuring user safety.
- Trim kit: Includes the visible components such as the handle and finish.
The system is designed to accommodate different wall types, including standard and thin walls. For thin-wall installations, additional components such as the RP47202 may be required to ensure proper alignment and support.
Pre-Installation Considerations
Before beginning the installation, it is crucial to review the manufacturer’s instructions and gather all necessary tools and materials. Delta’s documentation emphasizes that improper installation can lead to personal injury, property damage, or product failure. Therefore, the installer is responsible for ensuring that the valve is correctly positioned, aligned, and adjusted.
Tools and Materials
The following tools and materials are typically required for installation:
- Adjustable wrench
- Pipe cutter or tubing cutter
- Plumber’s putty or silicone sealant
- Measuring tape
- Level
- Pencil
- Teflon tape
- Replacement parts (if needed)
- Pipe plugs (if unused ports are to be sealed)
- RP47202 (for thin-wall installations)
- Proper fittings (copper, PEX, or iron pipe, depending on the system)
Safety Precautions
Delta’s installation guide includes several critical safety warnings:
- Shut off water supplies before beginning installation.
- Ensure the finished wall is flush with the front of the plasterguard.
- Verify that the word “UP” is on top of the valve body before installation.
- Avoid soldering at high temperatures to prevent damage to internal components.
- If the water in your area contains lime, rust, or sand, regular inspection of the valve cartridge may be necessary.
Failure to follow these precautions can result in damage to the valve, leaks, or even hot water burns due to improper temperature control.
Step-by-Step Installation Instructions
Step 1: Prepare the Installation Site
Before installing the valve, ensure that the plumbing rough-in is complete and that the wall structure is ready to receive the valve. The thickness and type of the finished wall will influence how the rough-in body is mounted.
- Shut off the water supply to the installation area.
- Remove the cover of the rough-in body to access the mounting holes.
- Measure and mark the position of the stringer mounting holes on the wall.
- Install the rough-in body so that the surface of the finished wall is flush with the front of the plasterguard. The recommended distance from the stringer to the front of the plasterguard is 2.8 inches (71 mm), with a tolerance of ± 3/8 inch (9.5 mm).
Delta’s documentation specifies that for models with stops, the plasterguard must be flush or subflush with the finished wall. For thin-wall installations, the plasterguard should be positioned behind the wall, and the RP47202 may be required for support.
Step 2: Mount the Rough-In Body
Once the position is confirmed, proceed with securing the rough-in body to the wall.
- Align the body with the stringer mounting holes.
- Mount the body using the two stringer mounting holes on the bracket.
- Ensure the word “UP” is on top of the valve body when installed.
Proper alignment is crucial for the correct operation of the valve. Misalignment can lead to improper sealing, leaks, or difficulty in adjusting the temperature.
Step 3: Connect Water Supplies
After the body is mounted, connect the valve to the hot and cold water lines. The method of connection will depend on the type of piping used (copper, PEX, or iron).
- Identify the inlet ports: Port (1) is the cold inlet, and port (2) is the hot inlet.
- Use appropriate fittings for your system type. For PEX, ensure the correct crimp or expansion fittings are used.
- Seal any unused ports with pipe plugs to prevent leaks.
- Avoid soldering at high temperatures, as this can damage internal components such as the screen or stops.
Delta’s documentation warns that the screen should remain installed during soldering and that stops must be removed from the w/stops version before soldering.
Step 4: Install the Valve Trim and Adjustments
After the rough-in body is installed and connected to the water supply, the trim kit can be installed.
- Remove the bonnet and test cap before soldering.
- Install the trim kit according to the manufacturer’s instructions.
- Adjust the Rotational Limit Stop (RLS) as needed to ensure the maximum temperature is set to a safe level.
- Affix a caution label with the installer’s name, company, and date of adjustment to the back of the nearest cabinet door.
- Apply a warning label to the water heater.
Delta emphasizes that the RLS must be adjusted by the installer to prevent scalding. The label serves as a permanent record of the installation and adjustment.
Step 5: Final Inspection and Testing
Before completing the installation, perform a final inspection and test the system.
- Turn on the water supply and check for leaks.
- Test the valve by adjusting the handle and verifying that the water temperature and flow are consistent.
- Shake the valve cartridge (if required) to ensure it functions properly. If a rattling sound is not present, the cartridge should be replaced.
- Replace the bonnet and test cap after soldering is complete.
Delta recommends that in areas with hard water or contaminants, the valve cartridge should be inspected periodically and replaced if necessary.
Maintenance and Troubleshooting
Delta provides guidance for troubleshooting common issues with the Multichoice valve system.
Common Issues and Solutions
- No water flow: Check for blockages in the inlet ports or faulty installation. Ensure all connections are secure and sealed.
- Inconsistent water temperature: Adjust the Rotational Limit Stop (RLS) as needed. If the issue persists, the cartridge may need to be replaced.
- Leaking connections: Verify that all fittings are properly tightened and sealed. Replace any damaged or worn components.
- Low water pressure: Check for clogged filters or screens. Clean or replace as needed.
- Rattling or noise from the cartridge: This is a normal indication of a functioning valve. If no rattle is heard, replace the cartridge.
Delta’s documentation also includes a reference for cartridge replacement based on the installation date and model. For example:
- Monitor® Series 1300/1400: Use RP19804 for replacement.
- MultiChoice® 13/14 (prior to August 2014): Use RP46074 for replacement.
- MultiChoice® 13/14 (August 2014 and after): Use RP46074 for replacement.
- MultiChoice® 13/14 (Ceramic): Use RP74236 for replacement.
Warranty and Support
Delta offers a warranty for the Multichoice Universal Shower Valve, provided the installation and use are in accordance with the manufacturer’s guidelines.
- Warranty is void if the valve is damaged due to misuse, abuse, neglect, improper installation, or the use of non-Delta replacement parts.
- For support, contact Delta Faucet Company at:
- Address: 55 E. 111th Street, Indianapolis, IN 46280
- Website: www.deltafaucet.com/service-parts/contact-us
Delta also provides access to technical documents, including installation guides and replacement part lists, on their website.
Conclusion
The Delta Multichoice Universal Shower Valve is a versatile and reliable system for residential and commercial applications. Proper installation is essential to ensure the valve functions as intended, providing consistent water temperature and flow while minimizing the risk of leaks or scalding. By following Delta’s detailed installation instructions, installers can ensure a safe and effective setup. Additionally, regular inspection and maintenance can extend the lifespan of the system and prevent common issues.
The installation process involves several key steps, including wall preparation, rough-in body mounting, water supply connection, trim installation, and adjustment of the Rotational Limit Stop. Each step must be executed carefully to avoid damage to the system or potential safety hazards.
For those planning an installation, it is recommended to consult Delta’s official documentation and reach out to customer support if any questions or concerns arise. Proper installation and adherence to manufacturer guidelines are critical for maximizing the performance and longevity of the Delta Multichoice Universal Shower Valve.