Cambridge-lee Industries DL04080850BX Mini-split Line Set

Product Description

The CAMBRIDGE-LEE INDUSTRIES DL04080850BX is a pre-insulated copper mini-split line set designed for residential and light commercial ductless HVAC installations. It features a 1/4 inch liquid line and a 1/2 inch suction line, each insulated with 1/2 inch black polyethylene hard shell insulation. The set runs 50 feet in length, making it suitable for single-zone mini-split systems where the indoor and outdoor units require a longer refrigerant circuit. Both ends are plain end connections, meaning the installer handles all flaring or brazing on site. The copper construction meets ASTM E9600 material specifications and the assembly carries ASTM E84/C1427 and UL listings.

This line set is used in ductless mini-split HVAC applications, covering both residential new construction and retrofit installations. The 50-foot run accommodates scenarios where the outdoor condensing unit is located at a significant distance from the indoor air handler, such as rooftop or side-yard placements relative to interior wall-mount units. The plain end configuration gives the installing technician flexibility to choose between flared or brazed connections based on system requirements and local code. HVAC mechanics and refrigeration technicians are the primary trades performing this installation.

Key Features

• 1/4 inch liquid line and 1/2 inch suction line in a single pre-paired assembly
• 1/2 inch black polyethylene hard shell insulation on both lines
• 50-foot length covers extended runs between indoor and outdoor units
• Plain end x plain end connections allow field flaring or brazing
• Copper construction per ASTM E9600 material specification
• Rated to ASTM E84/C1427 and UL standards for HVAC applications

Compatibility

Designed as an OEM-style replacement and new-installation line set for ductless mini-split HVAC systems requiring a 1/4 inch liquid line and 1/2 inch suction line configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician or certified refrigeration mechanic. The refrigerant system must be fully recovered and the system de-energized before disconnecting any existing line set. Plain end connections require field flaring or silver brazing per the equipment manufacturer instructions and applicable mechanical codes. Protect insulation from UV exposure on outdoor runs, as additional UV-rated jacketing may be required depending on local conditions.

Technical Specifications

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

Standard Information

• Brand: CAMBRIDGE-LEE INDUSTRIES
• Manufacturer Part Number: DL04080850BX