Cambridge-lee Industries DL04060850BX Mini-split Line Set

Product Description

The CAMBRIDGE-LEE INDUSTRIES DL04060850BX is a pre-insulated mini-split line set engineered for ductless HVAC system installations. It consists of a 1/4-inch liquid line and a 3/8-inch suction line, both constructed from copper with plain end connections on each side. The set runs 50 feet in length and is wrapped in 1/2-inch black polyethylene hard-shell insulation. The insulation meets ASTM E84 and C1427 flame and smoke standards, making it code-appropriate for residential and light commercial installs. The plain-end configuration allows field-cut sizing and is compatible with standard flare-and-braze connection methods.

This line set is designed for ductless mini-split systems in residential and light commercial applications. The 50-foot run accommodates typical wall-penetration installations where the indoor air handler and outdoor condenser unit are separated by a moderate distance. The black polyethylene hard shell provides UV and mechanical protection for runs that travel along exterior walls or through unconditioned spaces. HVAC technicians installing single-zone or multi-zone ductless systems will find this a straightforward pull-through line set suited for new installs and like-for-like replacements.

Key Features

• 1/4-inch copper liquid line and 3/8-inch copper suction line in a single pre-bundled assembly
• 50-foot length accommodates typical residential and light commercial mini-split run distances
• 1/2-inch black polyethylene hard-shell insulation for thermal efficiency and physical protection
• Plain end x plain end connections allow field flaring or brazing to match job requirements
• Insulation rated to ASTM E84/C1427 and UL standards for flame and smoke performance
• Copper construction meets ASTM E9600 material specification

Compatibility

Designed as an OEM-style replacement or new-installation line set for residential and light commercial ductless mini-split systems requiring a 1/4-inch liquid line and 3/8-inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes and the equipment manufacturer instructions. Disconnect and lock out power to the indoor and outdoor units before making any refrigerant line connections. Plain-end copper lines require field flaring or brazing using appropriate tools and nitrogen purge procedures to prevent oxidation inside the lines. Insulation should be kept continuous and sealed at all terminations to maintain thermal performance and prevent condensation.

Technical Specifications

• Liquid Line Diameter: 1/4 inches
• Suction Line Diameter: 3/8 inches
• Length: 50 feet
• Insulation Thickness: 1/2 inches
• Insulation Material: Black Polyethylene Hard Shell
• Line Material: Copper
• End Connection: Plain End x Plain End
• Application: HVAC Mini-Split
• Applicable Standards: ASTM E84/C1427, ASTM E9600, UL

Standard Information

• Brand: CAMBRIDGE-LEE INDUSTRIES
• Manufacturer Part Number: DL04060850BX