Moen 2385PF M-Pact Posi-Temp Pressure Balancing Valve User Manual

1. Product Overview

The Moen 2385PF M-Pact Posi-Temp Pressure Balancing Valve is designed to maintain consistent water temperature in your shower, preventing sudden temperature changes. This valve is part of the M-PACT common valve system, which allows for future style upgrades of trim without requiring replacement of the in-wall valve.

Key Features:

• Pressure Balancing: Ensures consistent water temperature, protecting against scalding or thermal shock.
• M-PACT Common Valve System: Facilitates easy trim upgrades without disturbing plumbing.
• Cartridge Type: Utilizes Moen 1222 cartridge for reliable performance.
• Connection: Features 1/2-inch cold expansion PEX connections.
• Ports: Designed with four ports for efficient water flow.

Image 1.1: The Moen 2385PF M-Pact Posi-Temp Pressure Balancing Valve, showing the main valve body and PEX connections.

2. Specifications

3. Installation

Installation of the Moen 2385PF valve should be performed by a qualified professional or an individual with plumbing experience. Always refer to the detailed installation instructions provided in the product packaging for specific steps and safety guidelines. Ensure all local plumbing codes are followed.

General Installation Guidelines:

• Preparation: Turn off the main water supply before beginning any installation. Clear the work area and gather all necessary tools and materials.
• Valve Placement: Position the valve body securely within the wall cavity, ensuring it is plumb and at the correct depth for your chosen trim kit.
• PEX Connections: Connect the 1/2-inch cold expansion PEX supply lines to the valve inlets. Ensure all connections are secure and leak-free.
• Outlet Connections: Connect the PEX lines to the showerhead and tub spout (if applicable) outlets.
• Testing: After installation, slowly turn on the water supply and check for any leaks. Test the valve's function with the appropriate trim kit.

For detailed diagrams and step-by-step instructions, consult the official Moen installation guide included with your product or available on the Moen website.

4. Operation

The Moen Posi-Temp valve operates by balancing the hot and cold water pressure to maintain a consistent temperature. Once the trim kit is installed, the handle controls both water flow and temperature.

Using Your Posi-Temp Valve:

• Turning On/Off: Rotate the handle to turn the water flow on or off.
• Adjusting Temperature: Rotate the handle to adjust the water temperature. Typically, rotating counter-clockwise increases hot water, and clockwise increases cold water. The Posi-Temp feature will automatically adjust to maintain your selected temperature even if water pressure fluctuates elsewhere in your home.
• Temperature Limit Stop: The valve includes an adjustable temperature limit stop to prevent the handle from being rotated to excessively hot temperatures. This can be adjusted during installation or maintenance.

5. Maintenance

Regular maintenance helps ensure the longevity and optimal performance of your Moen Posi-Temp valve. The primary maintenance item is the 1222 Posi-Temp cartridge.

Maintenance Tips:

• Cartridge Replacement: If you experience issues with temperature control or water flow, the 1222 cartridge may need to be replaced. Refer to the specific instructions for cartridge replacement provided by Moen.
• Cleaning: Keep the visible trim components clean using a soft cloth and mild soap. Avoid abrasive cleaners or harsh chemicals that can damage the finish.
• Water Shut-off: In case of extended absence or plumbing work, it is advisable to shut off the main water supply to prevent potential issues.

6. Troubleshooting

If you encounter issues with your Moen 2385PF Posi-Temp valve, review the common troubleshooting steps below. For persistent problems, contact Moen customer support or a qualified plumber.

Common Issues and Solutions:

• Inconsistent Water Temperature: This is often due to a faulty Posi-Temp cartridge (Moen 1222). Replacing the cartridge typically resolves this issue.
• Low Water Flow: Check for obstructions in the showerhead or tub spout. If the issue persists, the cartridge may be clogged or faulty.
• Leaks: Inspect all connections for tightness. If the leak is from the valve body, the cartridge or seals may need replacement.
• Water Too Hot/Cold: Adjust the temperature limit stop on the valve. Refer to the installation guide for instructions on adjusting this feature.

7. Warranty and Support

Moen products are manufactured to the highest standards of quality and workmanship. The Moen 2385PF M-Pact Posi-Temp Pressure Balancing Valve is backed by a Limited Lifetime Warranty.

Warranty Information:

• The warranty covers defects in material and manufacturing workmanship for the original consumer purchaser.
• For full details regarding warranty coverage, limitations, and how to make a claim, please refer to the warranty documentation included with your product or visit the official Moen Warranty Page.

Customer Support:

For technical assistance, replacement parts, or warranty inquiries, please contact Moen Customer Support:

• Website: www.moen.com/customer-support
• Phone: Refer to the Moen website for regional contact numbers.

8. Moen Brand Overview