Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your Moen Faucet Lavatory 2H CS SR BNIC 84311SRN. Please read all instructions carefully before beginning installation or use to ensure safe and efficient operation.
The Moen 84311SRN faucet features a brushed nickel finish and a two-handle design, offering both modern aesthetics and functional control for your bathroom lavatory.
Setup and Installation
Before you begin, ensure you have all necessary tools and components. Refer to the included parts list for verification. It is recommended to turn off the main water supply before starting any plumbing work.
Tools Required:
- Adjustable Wrench
- Phillips Head Screwdriver
- Plumber's Putty or Silicone Sealant
- Safety Glasses
Installation Steps:
- Prepare the Sink: Clean the faucet mounting area on the sink. Apply a thin bead of plumber's putty or silicone sealant around the base of the faucet body.
- Mount the Faucet: Insert the faucet body and handles through the holes in the sink. From underneath the sink, secure the faucet using the provided mounting hardware (washers and nuts). Tighten securely but do not overtighten.
- Connect Water Supply Lines: Attach the hot and cold water supply lines to the corresponding inlets on the faucet body. Connect the other ends of the supply lines to your hot and cold water shut-off valves. Ensure all connections are hand-tight, then use an adjustable wrench for a final quarter-turn.
- Install Drain Assembly: Follow the instructions provided with your drain assembly to install it into the sink drain hole. Connect the pop-up rod (if applicable) to the faucet's lift rod mechanism.
- Test for Leaks: Slowly turn on the main water supply. Check all connections for leaks. If leaks are present, tighten the connections slightly until they stop.

Image: Moen Lavatory Faucet Model 84311SRN shown installed in a bathroom setting, demonstrating its appearance and functionality with water flowing.
Operating Instructions
Your Moen 84311SRN faucet is designed for ease of use with its two-handle configuration.
Water Flow and Temperature Control:
- Cold Water: Turn the right handle counter-clockwise to activate cold water flow.
- Hot Water: Turn the left handle counter-clockwise to activate hot water flow.
- Temperature Blending: Adjust both handles simultaneously to achieve your desired water temperature. The independent control of hot and cold water allows for precise temperature mixing.
- Water Volume: The further you turn the handles, the greater the water volume will be.

Image: A detailed front view of the Moen Lavatory Faucet Model 84311SRN, highlighting its two handles and curved spout design.
Maintenance
Regular cleaning and maintenance will help preserve the finish and functionality of your Moen faucet.
Cleaning the Finish:
- Use a soft, damp cloth and mild soap to clean the faucet surface.
- Avoid abrasive cleaners, harsh chemicals, or scouring pads, as these can damage the brushed nickel finish.
- Wipe the faucet dry after each use to prevent water spots and mineral buildup.
Aerator Maintenance:
If water flow becomes restricted, the aerator may be clogged with debris or mineral deposits.
- Unscrew the aerator from the end of the spout.
- Separate the components of the aerator and rinse them under running water.
- Use a small brush or toothpick to remove any stubborn deposits.
- Soak the aerator components in a 50/50 solution of white vinegar and water for several hours if mineral buildup is severe.
- Reassemble the aerator and screw it back onto the spout.
Troubleshooting
This section addresses common issues you might encounter with your Moen faucet.
| Problem | Possible Cause | Solution |
|---|---|---|
| Low Water Flow | Clogged aerator; partially closed shut-off valves; kinked supply lines. | Clean aerator (see Maintenance); fully open shut-off valves; straighten supply lines. |
| Leaking from Spout | Worn out cartridge; debris in cartridge. | Replace cartridge (contact Moen support for part); flush lines to clear debris. |
| Leaking from Base | Loose mounting nuts; improper sealant application. | Tighten mounting nuts; reapply plumber's putty or silicone sealant. |
| Difficulty Adjusting Temperature | Improperly installed handles; issues with hot/cold water supply. | Ensure handles are correctly seated; check hot/cold water supply to the house. |
If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact Moen customer support.
Specifications
Key technical specifications for the Moen Faucet Lavatory 2H CS SR BNIC 84311SRN.
| Brand | Moen |
| Model Name | FAUCET LAVATORY 2H CS SR BNIC |
| Part Number | 84311SRN |
| Mounting Type | Deck Mount |
| Finish Type | Brushed |
| Material | Zinc |
| Color | Brushed Nickel |
| Number of Handles | 2 |
| Hole Count | 1 |
| Product Dimensions | 30"D x 8"W x 6"H |
| Item Weight | 3 Pounds |
| UPC | 026508354452 |
Warranty Information
For detailed warranty information regarding your Moen Faucet Lavatory 2H CS SR BNIC 84311SRN, please refer to the warranty documentation included with your product packaging or visit the official Moen website. Moen typically offers a limited lifetime warranty on many of its faucet products, covering defects in material and manufacturing workmanship.
Protection plans may also be available for purchase separately to extend coverage beyond the manufacturer's warranty. Please consult the retailer or plan provider for details on these additional protection options.
Support
If you require assistance with installation, operation, troubleshooting, or warranty claims, please contact Moen customer support directly. They can provide expert guidance and support for your product.
Moen Official Website: www.moen.com
Contact information such as phone numbers and email addresses can typically be found on the Moen website under their "Support" or "Contact Us" sections.





