Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Moen 82403EP Thermostatic Tub and Shower system. Please read this manual thoroughly before beginning installation or use to ensure proper function and safety. Keep this manual for future reference.
Safety Information
Observe all local plumbing and building codes. If you are unsure about any part of the installation, consult a qualified professional. Always turn off the main water supply before beginning any work on your plumbing system.
- Ensure water supply is turned off before installation.
- Wear appropriate personal protective equipment (PPE) during installation.
- Do not overtighten connections, as this may cause damage.
- Test for leaks thoroughly after installation is complete.
Product Components
The Moen 82403EP system includes the following primary components:
- Showerhead
- Handle (Lever style for water adjustment)
- Tub Spout (4 7/8 inch length)
- Thermostatic Volume Control Valve (3/4 inch)
Figure 1: Overview of the Moen 82403EP Thermostatic Tub and Shower system, featuring the showerhead, control handles, and tub spout, all in a polished chrome finish.
Setup and Installation
Professional installation is recommended. Refer to the detailed installation guide included with your product for specific plumbing diagrams and instructions. The following is a general overview:
- Prepare the Installation Area: Ensure the wall cavity is clear and accessible. Turn off the main water supply.
- Install the Valve Body: Secure the 3/4 inch volume control valve body within the wall according to the rough-in dimensions. Ensure it is level and properly aligned.
- Connect Water Lines: Connect the hot and cold water supply lines to the appropriate inlets on the valve body. Connect the outlet lines to the showerhead and tub spout.
- Install Showerhead Arm and Head: Thread the shower arm into the wall fitting and secure the showerhead.
- Install Tub Spout: Attach the tub spout to its dedicated pipe.
- Install Trim and Handles: Once the rough plumbing is complete and tested, install the decorative trim plate and lever handles.
- Test for Leaks: Turn on the main water supply and carefully check all connections for leaks.
Operating Instructions
The Moen 82403EP system features lever handles for easy water adjustment and a thermostatic valve for consistent temperature control.
- Water Flow: Rotate the lever handle to increase or decrease water flow.
- Temperature Control: The thermostatic valve maintains a set temperature. Adjust the temperature by rotating the central knob.
- Diverter (if applicable): If your specific installation includes a diverter, pull or push the diverter knob on the tub spout to switch water flow between the tub spout and showerhead.
Maintenance
Regular cleaning and maintenance will ensure the longevity and performance of your Moen tub and shower system.
- Cleaning the Finish: Clean the chrome finish with a soft, damp cloth. Avoid abrasive cleaners, harsh chemicals, or scouring pads, as these can damage the finish.
- Cleaning Showerhead Nozzles: The 4-inch diameter spray head features easy-clean rubberized spray nodules. To remove mineral buildup, gently rub the nodules with your finger or a soft brush.
- Handle Tightness: Periodically check the tightness of the handle screws. If a handle becomes loose, gently tighten the set screw with an appropriate hex key.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Low Water Flow | Clogged showerhead nozzles; partially closed shut-off valve; mineral buildup in valve. | Clean showerhead nozzles; ensure shut-off valves are fully open; consult a plumber for valve inspection. |
| Inconsistent Water Temperature | Thermostatic cartridge issue; imbalanced water pressure. | Verify hot and cold water supply pressures are balanced; contact Moen support or a plumber for cartridge inspection. |
| Leaking from Handle/Spout | Loose connections; worn O-rings or seals; faulty cartridge. | Check and tighten connections; replace O-rings/seals; replace cartridge if necessary (consult Moen support). |
| Handle is Loose | Set screw needs tightening. | Gently tighten the set screw on the handle with an appropriate hex key. |
Specifications
- Model Number: 82403EP
- Brand: Moen
- Finish: Chrome
- Material: Metal (Handle Material: Brass)
- Number of Handles: 1
- Mounting Type: Wall Mount
- Showerhead Size: 4 inches diameter
- Tub Spout Length: 4 7/8 inches
- Valve Type: Thermostatic Volume Control Valve (3/4 inch)
- Item Weight: Approximately 10.4 ounces (295 Grams)
- Product Dimensions: 6 x 8 x 6 inches
- UPC: 026508236734
- Water Consumption: 1 Liters (This value may refer to a specific test condition; actual flow rates should comply with local regulations.)
- Compliance: Complies with Americans with Disabilities Act (ADA) specifications. Meets EPA WaterSense criteria.
Warranty Information
Moen products are manufactured under the highest standards of quality and workmanship. For detailed warranty information, please refer to the warranty card included with your product or visit the official Moen website. Keep your proof of purchase for warranty claims.
Support
For technical assistance, replacement parts, or further information, please contact Moen customer service. You can find contact details on the official Moen website or by referring to the documentation provided with your product.
Moen Official Website: www.moen.com





