Parker fn.lsin145812050 Copper Line Set 50 Ft 1/4x5/8x1/2

Product Description

The PARKER fn.lsin145812050 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, reducing handling time and simplifying routing during installation. The liquid line measures 1/4 inch, the suction line measures 5/8 inch, and the insulation wall thickness is 1/2 inch. Total line set length is 50 feet. Both lines ship ready to connect, with flare nuts included. This line set is rated for high-pressure refrigerants including R-410A and is UL723 Classified under ASTM E84 with a 25/50 flame spread and smoke developed index rating.

This line set is suited for residential and light commercial applications where ductless mini-split, VRF, or heat pump systems are being installed or replaced. The 50-foot length covers most single-zone and multi-zone runs. The mechanically attached dual-line configuration keeps the suction and liquid lines aligned during installation, which is particularly useful in tight chases, overhead runs, or exterior wall routing where managing two separate lines would slow the job.

Key Features

• Suction and liquid lines mechanically joined for faster, single-pass routing
• UL723 Classified, ASTM E84 rated 25/50 flame spread and smoke developed index
• UL Performance Verified for UV resistance, tested for a minimum of 5 years of UV exposure
• White polyethylene outer jacket protects foam insulation from tearing during pull-through and installation
• Foot markings printed incrementally along insulation for accurate refrigerant charge measurement and reduced copper waste
• Rated for high-pressure refrigerant applications including R-410A
• Paintable insulation jacket for aesthetic matching to surrounding surfaces

Compatibility

Designed for use with ductless mini-split, VRF, heat pump, and unitary systems requiring a 1/4-inch liquid line and 5/8-inch suction line with 1/2-inch insulation wall thickness.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with refrigerant piping and local mechanical codes. Shut down and lock out the system before making any line connections. Flare fittings must be made with the correct flare tool for the line diameter — inspect all flares before pressurizing the system. Do not exceed the bend radius of the copper tubing, and support the line set at intervals consistent with applicable mechanical code requirements.

Technical Specifications

• Liquid Line Diameter: 1/4 inch
• Suction Line Diameter: 5/8 inch
• Insulation Wall Thickness: 1/2 inch
• Line Set Length: 50 feet
• Refrigerant Compatibility: R-410A and other high-pressure refrigerants
• Certifications: UL723 Classified R39562, ASTM E84 25/50, UL Performance Verified UV Resistance
• Outer Jacket Material: White polyethylene
• UV Resistance: Minimum 5 years verified
• Included Components: Flare nuts

Standard Information

• Brand: PARKER
• Manufacturer Part Number: fn.lsin145812050