Delta Faucet Installation Guide for U.S. Homeowners and Plumbers

This article provides a detailed overview of the installation process and maintenance procedures for two popular Delta faucet models—the 77310 Ashlyn Widespread Bathroom Faucet and the T3558LF-WL Trinsic® Single Handle Wall Mount Bathroom Faucet Trim—based exclusively on the information available in provided official documentation. The guide highlights key installation steps, troubleshooting common issues, and warranty considerations to ensure users can successfully install and maintain the product according to the manufacturer's specifications.


Installation Safety and Preparation

Pre-Installation Safety Instructions

Both faucet models emphasize the critical need to carefully read and understand the installation instructions prior to beginning the process. The documentation explicitly warns that failure to do so can result in personal injury, property damage, or product failure. Delta Faucet Company disclaims responsibility for defects caused by improper installation, misuse, or lack of adherence to listed guidelines.

Users are advised to turn off the water supply at the main shut-off valve before starting any installation or repair work. This step is crucial to prevent water flow during assembly and to avoid potential hazards such as leaks or flooding.


Tools and Materials Required

Both installation manuals recommend tools that may already be available for DIY users or plumbers. These include:

  • Basic hand tools: wrench(es), screwdrivers
  • Cutting tools: depending on type of supply tubing or piping (specifically for PEX or copper tubing)
  • Tubing cutter: for clean, straight cuts in PEX/copper supply lines
  • Cleaning materials: soft cloth, water for rinsing, and a dry towel for blotting

No specialized or proprietary tools are required for installation. However, the manual encourages using genuine Delta replacement parts, especially when customizing or replacing any components such as valves or seals.


Installation of the Delta 77310 Ashlyn Widespread Faucet

The Delta 77310 Ashlyn is a widespread bathroom faucet, meaning it includes a spout and two valves mounted separately on a sink. This model requires multiple sink holes for mounting.

Valve Anchor Installation

  1. Insert black valve anchors into the outermost left and right sink holes.
  2. Ensure that the anchors are centered within the hole.
  3. The hole must be a minimum diameter of 1 1/4 inches for proper fit.
  4. If necessary, fold in the cleats to ease insertion into the sink.

Spout Anchor Installation

  1. Insert the grey spout anchor into the center sink hole.
  2. Again, ensure the anchor is centered, and the hole diameter is at least 1 1/4 inches.
  3. Use cleats if they need to be folded for installation.

Connecting Valve Assemblies

An essential step for this model is aligning the valve anchors and spout anchor using the lift rod. The rod must be inserted into the notches on anchor assemblies to ensure the assembly moves correctly during use.


Installation of the Delta T3558LF-WL Wall Mount Faucet Trim

The T3558LF-WL model is a single-handle wall mount faucet trim designed for a more compact and modern installation. It requires proper alignment with a rough-in valve (R3510-WL), which is mandatory for compatibility.

Mounting Spout Installation

  1. Ensure the copper supply tube is nominal 1/2 inch (13mm) in diameter.
  2. Cut the tube to size with a clean, perpendicular cut.
  3. Remove burrs from the cut end.
  4. Install the gasket over the tube.
  5. Slide the spout over the copper tube until it is flush against the wall.
  6. Secure the position using a set screw, being careful not to over-tighten to avoid cracking the ceramic or damaging internal components.

Handle and Trim Assembly

  1. Discard the plasterboard cover used for shipping.
  2. Install the sleeve, handle flange, gasket, and cap in order.
  3. Tighten by hand, and if the o-ring is dry or tight, apply lubricant.
  4. Use a hex wrench to attach the handle to the stem.
  5. Insert the button into the screw hole to secure the mechanism.

System Flushing

After all components are installed:

  1. Turn on the water supply.
  2. Remove the aerator and set the faucet handle to full position.
  3. Allow the system to flush for one minute to remove debris from the water lines.
  4. Reinstall the aerator to protect the faucet from sediment damage.
  5. Check all connections for leaks and make any necessary adjustments.

Common Installation Challenges and Troubleshooting

Delta’s technical documentation includes several "remedy-based" instructions to assist users in resolving common issues during or after installation.

Leak Under the Handle

  • Suggested Action: Tighten the bonnet nut using a wrench.
  • If the leak continues: Turn off the water, and replace the valve assembly.
  • Important: When reinstalling the valve assembly, the arrow must face the spout.
  • Cold water valve orientation note: Rotate the stop 90 degrees clockwise for correct positioning if the valve is not working cold as expected.

Spout Leaks Near the Wall

  • Suggested Action: Replace the O-ring located in the spout assembly.
  • The O-ring is a wearable component and may degrade over time due to water pressure or mineral accumulation.

Low Water Flow

  • Suggested Action: Clean the aerator.
  • Sediment and debris can clog the flow, reducing water pressure. The aerator should be periodically removed and rinsed to maintain optimal flow.

PEX or Copper Line Installation Warnings

  • The PEX or copper supply tubing must be cut straight with clean, perpendicular edges.
  • Improper cuts or incorrect sleeve use can lead to leaks.
  • Do not use metal ferrules unless specified. Delta warns that using non-recommended gaskets or sleeves may not create a leak-free joint.
  • Avoid using pipe dope or sealant on the water line connections as per safety instructions.

Custom Fit and Rough-In Considerations

For faucets requiring a custom fit due to existing water line lengths or configurations, the user must:

  • Plan in advance for cuts in the PEX or copper tubing.
  • Carefully measure dimensions to ensure the joint remains leak-free.
  • Ensure the plastic sleeves (ferrules) specified in the guide are used with the nuts included in the faucet packaging.
  • If a cut is too short or misaligned, refer back to original instructions and avoid improvisation to prevent installation failure.

Maintenance and Ongoing Care

Proper maintenance can extend the lifespan of Delta faucets and ensure consistent performance over time.

Cleaning

  • Always use a soft, wet cloth to clean the surface.
  • Avoid abrasive cleaners, polishers, or harsh chemicals, as these can damage the finish.
  • Wipe down the surface and blot dry with a soft towel after cleaning to prevent water spots.

Leak Prevention and Repairs

  • Tighten the bonnet nut under the handle if a steady leak is observed.
  • Replace the cartridge if the leak persists.
  • Inspect the O-ring on the spout regularly and replace if worn or damaged.
  • Use only genuine Delta replacement parts, as off-brand parts can lead to seal failures or corrosion.

Warranty Information and Service Support

Covered Warranty Details

Delta offers a limited warranty on parts and finish, valid for the lifespan of the original consumer. This includes all parts except electronic components and batteries. The warranty applies only to faucets purchased from authorized sellers.

Users who have purchased parts from unauthorized resellers are not covered under the manufacturer’s warranty.

What Is Excluded from Coverage

The warranty does not cover:

  • Labor charges associated with removal, repair, or replacement of the faucet.
  • Leaks, damage, or wear caused by installation errors, misuse, or improper maintenance.
  • Freezing water or outdoor use, unless explicitly approved.
  • Damage resulting from abuse, neglect, or incorrect part installation.

How to File a Warranty Claim or Request Parts

To obtain warranty service or replacement parts:

  • Call 1-800-345-DELTA (3358)
  • Visit the official website: www.deltafaucet.com/service-parts
  • Mail documentation to:
    • United States and Mexico: Delta Faucet Company, 55 E. 111th Street, Carmel, IN 46280
    • Canada: Address not provided in source material

Documentation required includes:

  • The model number of the faucet
  • The original purchase date
  • A receipt or documentation verifying the original purchase through an authorized seller

Conclusion

Delta’s 77310 Ashlyn Widespread and T3558LF-WL Trinsic® Single Handle Wall Mount faucets are designed for user-friendly installation with clear, step-by-step instructions in their manuals. Both models emphasize safety, accuracy, and the use of recommended parts. Understanding and following each step in the installation guide reduces the likelihood of leaks, mechanical failure, or warranty issues.

For long-term performance, regular maintenance and cleaning using approved methods is essential. In the event of a leak or mechanical failure, replacing correct parts and tightening internal connections often resolves the issue. Professional assistance is recommended for intricate or high-pressure installations to ensure adherence to Delta’s specifications.

By following these guidelines and using the genuine Delta components and installation tools, both homeowners and professional installers can ensure functional, reliable installations that meet manufacturer expectations.


Sources

  1. DELTA 77310 Ashlyn Widespread Bathroom Faucet Manual
  2. DELTA T3558LF-WL Single Handle Wall Mount Bathroom Faucet Trim Manual

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