1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Moen Align Chrome M-CORE 3-Series 2-Handle Shower Trim with Integrated Transfer Valve (Model UT3290). This premium shower trim is designed to enhance your shower experience with its user-friendly 2-handle design for precise water temperature and flow control, and an integrated transfer valve for switching between multiple water outlets.
Key features include:
- Coordinates with various bathroom accessories in the Align collection.
- Features volume control, allowing you to adjust the flow of water for greater functionality.
- Integrated M-CORE Transfer Valves can control 2 or 3 showering devices.
- Backed by Moen’s Limited Lifetime Warranty.
2. Important Safety Information
WARNING: This is an advanced plumbing project. Moen recommends installation by a professional plumber if you are not experienced with plumbing installations.
- Always shut off the main water supply to your home before starting any plumbing project. If you are unsure where the main shutoff is located, contact your local water company for assistance.
- After shutting off the main water supply, drain the water lines by turning on a faucet at the lowest point in the home.
- Ensure all connections are secure and leak-free before fully restoring water pressure.
- Wear appropriate safety gear, including safety glasses, during installation.
3. Package Contents
The Moen Align Chrome M-CORE 3-Series 2-Handle Shower Trim (UT3290) includes the following components:
- Volume Control Handle
- Diverter Handle
- Valve Cartridge & Adapter
- Escutcheon Assembly
- Installation Hardware
- Backing Plate
- Installation Instructions
Note: The M-CORE mixing valve (#U232 or #U362) is required for installation and is sold separately.

Figure 1: Included Components and Separately Sold M-CORE Valves

Figure 2: Required M-CORE Valve (Sold Separately)
4. Required Tools and Materials
Recommended Tools:
- Phillips Screwdriver
- Adjustable Pliers
- Needle Nose Pliers
- Adjustable Wrench
- PEX Tube Cutter
- Crimping Tool
- Thread Seal Tape
- Plumber's Putty
- Tape Measure
- Thermometer
- Torch
- Safety Glasses
You May Need to Purchase:
- 1/2" PEX Couplings
- Crimp Rings
- PEX and Copper Tubing
- Lead-Free Solder Kit
5. Installation
5.1. Preparation for Valve Installation
Before beginning, ensure the main water supply is shut off and lines are drained. If your wall does not have an access panel, you will need to create one. The center of the valve should be positioned 45-48 inches from the floor of the shower.
Video 1: M-CORE Mixing and Transfer Valve and Trim Installation (Full Guide)
This video provides a comprehensive guide to installing the Moen M-CORE shower and transfer valve and 3-series trim. It covers preparation, valve installation, and trim installation steps.
Video 2: M-CORE by Moen Installation (Detailed Steps)
This video demonstrates the detailed installation process for the Moen M-CORE system, including plumbing connections and securing the valve.
5.2. Attaching the Valve to Existing PEX Tubing
The M-CORE valve is available with various fitting options, including CC/IPS, Cold PEX, and Crimp PEX. This manual focuses on Crimp PEX installation.
- Use the plaster ground to position the valve flush with the finished shower wall. Ensure the 'UP' symbol on the valve is facing upwards.
- Measure the distance from the elbow of the cold and hot water inlets to the valve opening.
- Cut appropriate lengths of 1/2-inch PEX tubing.
- Slide 1/2-inch crimp rings onto each end of the new tubing.
- Insert one end of the tubing into the elbow and the other into the valve.
- Hand tighten, then snug with a wrench.
- Crimp each end of the PEX connections once all plumbing is in place.

Figure 3: M-CORE Valve with 'UP' Indicator
5.3. Installing the M-CORE Integrated Transfer Valve
Determine if you will be installing 2 or 3 showering devices. For 3 devices, you must modify the transfer valve cartridge. For 2 devices, cap the designated outlet 3 (caps sold separately).
- If installing 3 devices, remove the cartridge nut from the transfer valve and pull out the old cartridge. Reinstall the cartridge and nut, hand tighten, then snug with a wrench.
- Ensure the notch on the cartridge stem is facing down.
- Position the plaster ground so the face is flush with the finished wall.
- Measure the distance between the mixing valve outlet and the transfer valve inlet.
- Cut appropriate lengths of 1/2-inch tubing and slide crimp rings onto each end.
- Attach the tubing to the mixing and transfer valves.
- Attach the primary showering device plumbing to outlet 1, and the secondary to outlet 2. If adding a third, attach to outlet 3.
- Crimp each end of the PEX connections.
- Screw both valves to the cross members from the front of the wall for added support.

Figure 4: M-CORE Valve Connection Options

Figure 5: Integrated Mounting Bracket for Flat Installation
5.4. Flushing the System & Checking for Leaks
M-CORE valves come pre-installed with a flush plug. Turn on the main water supply and let water run from the shower outlets for 15 seconds to remove any debris. Pressurize the system, check for any leaks, then turn the water off.
5.5. Installing the M-CORE 3-Series Cartridge
- Remove the flush plug nut and pull out the flush plug by hand.
- Push the adapter and pressure balance puck out of the installation sleeve.
- Rotate the adapter 180 degrees, then reattach it to the puck.
- Reinstall the pressure balancing puck assembly into the provided installation sleeve.
- Align the tab on the check adapter with the hole inside the valve body.
- Align the two posts on the back of the cartridge assembly with the pressure balancing assembly.
- Thread on the cartridge nut included with the trim kit. Tighten by hand, then snug with a wrench.
5.6. Installing & Setting Adjustable Temperature Limit Stop
The M-CORE valve comes with an adjustable temperature limit stop. This feature allows you to set the valve to meet applicable temperature code requirements.
- To test the temperature, hold the lever handle in the 6 o'clock position. Lift and turn the handle clockwise until it stops.
- Turn on the water supply. If the desired water temperature has been met, no further adjustments are needed.
- If the water temperature exceeds 120 degrees, you must reset the temperature limit stop.
- To reset, turn the handle to lower the water temperature to 120 degrees. Close it and remove the handle.
- Remove the temperature limit stop ring, located on the outer rim of the cartridge stem.
- Turn the limit stop ring clockwise until the tabs on the ring line up with the corresponding tab on the cartridge.
- Reinsert the limit stop at the desired hot position.
5.7. Installing 3-Series Trim
- Install the decorative sleeve onto the mixing control.
- Using the four included screws, attach the mounting plate and snap ring to the valve.
- Snap the escutcheon plate onto the mounting plate.
- To add the transfer valve handle, slide the adapter into the handle and start the set screw. Install it onto the cartridge stem with the handle pointing down. Finish by tightening the set screw.
- To add the mixing valve handle, start the set screw and then place the handle on the cartridge stem. Finish tightening the set screw.

Figure 6: Installed Moen Align Shower Trim
6. Operation
Your Moen Align shower trim features a user-friendly 2-handle design for effortless control of water temperature and flow, and an integrated transfer valve for switching between different water outlets.
- Temperature Control: Use the lower handle to adjust the water temperature. Rotate it left for hotter water and right for colder water.
- Volume Control: The lower handle also controls the water flow volume.
- Transfer Valve: The upper handle operates the integrated transfer valve, allowing you to switch between 2 or 3 showering devices (e.g., showerhead, handheld shower, body sprays).
Video 3: Moen Shower Valve Operation Preview
This short video demonstrates the basic operation of the Moen shower valve, showing how to control water temperature and switch between shower outlets.
7. Maintenance
To maintain the finish and performance of your Moen Align shower trim, follow these cleaning guidelines:
- Clean with a damp cloth and mild liquid dishwashing soap.
- Do not use abrasive cleaners, scouring pads, or harsh chemicals as these may damage the finish.
- Wipe dry with a soft cloth to prevent water spots.
8. Troubleshooting
If you encounter issues with your shower trim, consider the following common troubleshooting steps:
- No Water Flow / Low Pressure: Ensure the main water supply is fully open. Check for any debris in the water lines or showerhead.
- Incorrect Water Temperature: Verify the adjustable temperature limit stop is set correctly (refer to Section 5.6).
- Leaks: Recheck all plumbing connections for tightness. Ensure PEX crimps are secure. If leaks persist, professional assistance may be required.
- Difficulty Switching Outlets: Ensure the transfer valve handle is fully engaged in each position.
9. Specifications
- Material: Metal (Brass)
- Exterior Finish: Chrome
- Item Dimensions (L x W x H): 2.75 x 6.5 x 9.38 inches
- Item Weight: 2.61 pounds
- Inlet Connection Size: 4.4 Inches
- Inlet Connection Type: 1/2" NPT
- Outlet Connection Size: 4.4 Inches
- Outlet Connection Type: 1/2" NPT
- Maximum Operating Pressure: 60 Pound per Square Inch
- Number of Ports: 3
- Number of Handles: 2
- Installation Method: Wall Mounted
- Usage: Inside
- Included Components: Mixing Valve Cartridge, Transfer Valve Trim
10. Warranty & Support
Your Moen Align Chrome M-CORE 3-Series 2-Handle Shower Trim is backed by Moen’s Limited Lifetime Warranty.
For further assistance, detailed instructions, or to inquire about warranty claims, please contact Moen Consumer Services:
Phone: 1-800-BUY-MOEN





