Indledning
This manual provides detailed instructions for the installation, operation, and maintenance of your Moen Belfield M-CORE 3-Series 2-Handle Shower Trim with Integrated Transfer Valve. The M-CORE valve system is designed for simplified installation and offers enhanced functionality and style options for your showering environment. It features pressure-balancing capabilities to control temperature fluctuations and volume control for water flow adjustment.

Image: Moen Belfield M-CORE 3-Series 2-Handle Shower Trim in Oil Rubbed Bronze, showcasing the two handles and oval escutcheon plate.
Sikkerhedsoplysninger
Vigtig: This is an advanced plumbing project. Moen recommends installation by a professional plumber. Always shut off the main water supply before beginning any plumbing work. If you are unsure how to locate or shut off your main water supply, contact your local water company for assistance. Ensure all water lines are drained before proceeding with installation.
Wear appropriate safety gear, including safety glasses, during installation. Follow all local plumbing codes and regulations.
Pakkens indhold
Your Moen Belfield M-CORE 3-Series 2-Handle Shower Trim package includes:
- Shower Trim Kit (handles, escutcheon plate)
- Mixing Valve Cartridge
- Trim overførselsventil
- Installation Sleeve (for valve protection during rough-in)
- Flush Plug (for testing system without cartridge)
- Monteringshardware
Note: The M-CORE Mixing Valve with Integrated Transfer Valve (U232 or U362) is required and sold separately to complete the installation.

Image: The M-CORE Mixing Valve with Integrated Transfer Valve, which is required for installation and sold separately.
Værktøj påkrævet
For installation, you may need the following tools:
- Phillips-skruetrækker
- Justerbare tænger
- Nåle næsetang
- Justerbar skruenøgle
- PEX Tube Cutter
- Copper Tube Cutter
- Krympeværktøj
- Trådforseglingstape
- Plumber's Putty
- Målebånd
- Termometer
- Torch (for copper connections)
- Sikkerhedsbriller
Opsætning (Installation)
This section outlines the steps for installing your Moen Belfield M-CORE Shower Trim. For a visual guide, please refer to the official installation videos.
1. Forberedelse
Before starting, ensure the main water supply to your home is shut off and all water lines are drained. If you are replacing an existing valve, locate the plumbing access panel behind the valve. If no access panel exists, you will need to create an opening centered on the wall behind the valve.
The M-CORE valves are available with various plumbing options including CC/IPS, Crimp PEX, Cold PEX, and CPVC (4-Port). This manual focuses on general installation steps.

Image: M-CORE valve illustrating different inlet/outlet plumbing options such as CC/IPS, Crimp PEX, and Cold PEX.
2. Attaching the Valve to Existing PEX Tubing
The center of the mixing valve should be positioned 45-48 inches from the floor of the shower. Use the plastic ground to position the valve flush with the finished shower wall, ensuring the "UP" symbol is facing upwards. Measure and cut appropriate lengths of PEX tubing to connect the hot and cold water inlets to the valve. Slide crimp rings onto each end of the new tubing before inserting them into the elbows and the valve. Crimp each connection securely.

Image: Close-up of the M-CORE valve showing the integrated mounting bracket, which allows for a flat installation against the wall.
3. Installing the M-CORE Transfer Valve
Determine if you will be installing two or three showering devices. If installing three devices, you will need to remove the cartridge nut and pull out the old cartridge from the transfer valve. Remove the dust cover, clip, and limiter from the cartridge. Reinstall the cartridge and nut, hand-tightening then snugging with a wrench. If installing two showering devices, do not remove the limiter and clip from the cartridge.
The minimum distance between the center mixing valve and the center of the transfer valve is 8 inches. Ensure the mixing valve outlet aligns with the transfer valve inlet. Cut and connect the PEX tubing for the primary (marked '1') and secondary (marked '2') showering devices. If adding a third device, connect its plumbing to the outlet marked '3'. Crimp all PEX connections. Secure both valves to the cross member from the front of the wall for added support.

Image: M-CORE valve system showing aligned inlet/outlet ports with the transfer valve, indicating proper plumbing connections.
4. Flushing the System and 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 and check for any leaks. Then, turn the water off.
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 and 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, hand-tighten, then snug with a wrench.
6. Installing and Setting Adjustable Temperature Limit Stop
The M-CORE valve includes an adjustable temperature limit stop 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 and measure the temperature. If the water temperature exceeds 120°F, you must reset the temperature limit stop. To reset, turn the handle to lower the water temperature to 120°F. Close it and remove the handle. Remove the temperature limit stop ring. Turn the limit stop ring clockwise until the tabs on the ring line up with the corresponding tabs on the cartridge. Reinsert the limit stop at the desired hot position.
7. Installing 3-Series Trim
Install the decorative sleeve onto the mixing control valve. Using the four included screws, attach the mounting plate and snap ring to the valve. Once the snap ring is centered on the sleeve, secure it to the valve using the four included screws. Snap on the escutcheon 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.
Installationsvideoer
For detailed visual instructions, please refer to the official Moen installation videos:
Moen M-CORE Features
Video Description: This video highlights the key features and benefits of the Moen M-CORE valve system, including its intuitive installation, design choices, and enhanced functionality for a better showering experience.
M-CORE Mixing and Transfer Valve and Trim Installation
Video Description: A comprehensive guide demonstrating the step-by-step installation process for the Moen M-CORE Mixing and Transfer Valve, along with the corresponding trim kit. This video covers preparation, valve attachment, and trim installation.
M-CORE by Moen Installation
Videobeskrivelse: Denne video giver en oversigtview of the Moen M-CORE installation process, detailing the steps involved in setting up the valve system for various shower configurations.
Operating Your Shower Trim
Your Moen Belfield M-CORE 3-Series 2-Handle Shower Trim allows for precise control over your showering experience:
- Temperaturkontrol: The lower handle controls the water temperature. Rotate it left for hotter water and right for colder water.
- Flow kontrol: The lower handle also controls the water flow. Pull it out to increase flow and push it in to decrease or stop flow.
- Valg af enhed: The upper handle controls which showering device is active. Rotate it to select between the primary showerhead, secondary showerhead, or a combination of both, depending on your installation.
The M-CORE system offers improved style and finish options, including perfectly matching mixing and transfer trim, allowing for a customized dream bathroom experience.

Image: A complete shower setup featuring the M-CORE Universal Valve System, showcasing multiple showering devices and trim options.
Opretholdelse
To maintain the finish of your Moen shower trim, clean it regularly with a soft, damp cloth. Avoid using abrasive cleaners, harsh chemicals, or scouring pads, as these can damage the finish. For stubborn water spots, a mild soap solution can be used, followed by rinsing and drying.
Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Vandtemperaturen svinger | Water pressure changes in the home. | The M-CORE valve has pressure-balancing capabilities designed to mitigate this. Ensure proper installation and check for any blockages in water lines. |
| Ingen vandgennemstrømning eller lav vandgennemstrømning | Main water supply off, clogged lines, or valve not fully open. | Check main water supply. Ensure handles are in the fully open position. Inspect for debris in the lines or showerhead. |
| Leaks from the trim | Improperly tightened connections or damaged seals. | Ensure all connections are securely tightened. If leaks persist, contact a professional plumber. |
Specifikationer
- Fabrikant: Moen Incorporated
- Varenummer: UT3322ORB
- Varens vægt: 2 pund
- Produktdimensioner: 2.5 x 6.75 x 9.63 tommer
- Varemodelnummer: UT3322ORB
- Farve: Olie gnidet bronze
- Stil: Traditionel
- Slutte: Bronze
- Materiale: Bronze (Handles: Brass)
- Strømkilde: Manuel
- Installationsmetode: Vægmonteret
- Varepakkemængde: 1
- Number Of Holes: 3
- Håndtag/håndtagsplacering: Løftestang
- Antal håndtag: 2
- Monteringstype: Vægmontering
- Anvendelse: Indenfor
- Inkluderede komponenter: Mixing Valve Cartridge, Transfer Valve Trim
Garanti
This Moen product is backed by Moen's Limited Lifetime Warranty. For specific terms and conditions, please refer to the warranty information provided with your product or visit the official Moen webwebsted.
Støtte
For further assistance or if you have any questions throughout the installation process, please contact Moen Consumer Services at 1-800-BUY-MOEN (1-800-289-6636).





