Parker fn.lsin141212050 Copper Line Set 50 Ft Mini-split

Product Description

The PARKER fn.lsin141212050 is a TwinGel preinsulated copper line set designed for refrigerant piping in ductless mini-split, VRF, heat pump, and unitary HVAC systems. The suction and liquid lines are mechanically joined together, allowing faster routing and a cleaner installation compared to separate lines. This 50-foot set pairs a 1/4-inch liquid line with a 1/2-inch suction line and includes flare nuts. The closed-cell foam insulation is factory-applied and rated for high-pressure refrigerant service including R-410A systems. An outer white polyethylene jacket protects the insulation during pull-through and rough-in work. Licensed HVAC technicians and refrigeration mechanics are the primary installers.

This line set is suited for residential and light commercial applications where a factory-paired line set speeds up installation. Typical use cases include ductless mini-split wall or ceiling cassette installs, VRF branch runs, and replacement line sets on heat pump systems. The 50-foot length accommodates standard residential runs between the outdoor condenser and indoor air handler. Foot markings are printed incrementally on the insulation jacket, allowing technicians to measure accurately in the field, confirm initial refrigerant charge length, and reduce unnecessary copper waste during trimming.

Key Features

• Suction and liquid lines mechanically attached for faster, single-pull installation
• UL723 Classified R39562 per ASTM E84 with a 25/50 flame spread and smoke development rating
• UL Performance Verified for UV resistance, tested for a minimum of 5 years of outdoor exposure
• White polyethylene outer jacket guards foam insulation against tearing during installation
• Incremental foot markings on insulation for accurate charge length measurement and reduced copper waste
• Rated for high-pressure refrigerant applications including R-410A service
• Paintable insulation surface allows color matching to exterior walls or equipment enclosures

Compatibility

Suitable for ductless mini-split, VRF, heat pump, and unitary systems requiring a 1/4-inch liquid line and 1/2-inch suction line configuration with high-pressure refrigerant compatibility.

Installation Notes

Installation should be performed by a licensed HVAC technician or refrigeration mechanic in compliance with applicable mechanical codes. De-energize and recover refrigerant from any existing system before disconnecting or connecting line sets. Flare connections must be made with proper flaring tools to ensure leak-free joints; do not overtighten flare nuts. Protect the line set jacket from sharp edges during routing to maintain insulation integrity.

Technical Specifications

• Liquid Line Diameter: 1/4 inch
• Suction Line Diameter: 1/2 inch
• Length: 50 feet
• Refrigerant Compatibility: R-410A and other high-pressure refrigerants
• Outer Jacket Material: White polyethylene
• UV Resistance: UL Performance Verified, minimum 5 years
• Fire Rating: UL723 Classified R39562, ASTM E84 25/50
• Included Hardware: Flare nuts
• Unit of Measure: Each

Standard Information

• Brand: PARKER
• Manufacturer Part Number: fn.lsin141212050