Cerro 408-2-50 Mini Split Lineset 1/4x1/2 50 Ft Insulated

Product Description

The CERRO 408-2-50 is a pre-insulated mini split lineset designed to connect the indoor air handler to the outdoor condensing unit in ductless mini split systems. It consists of a 1/4-inch liquid line and a 1/2-inch suction line, both wrapped in 1/2-inch wall insulation to limit heat gain and condensation. The lineset ships at 50 feet in length with plain end tubing, meaning the installer handles flaring or brazing on site. This product is handled and installed by licensed HVAC technicians working on residential and light commercial ductless systems.

This lineset suits new installations and replacement runs in residential and light commercial mini split applications. The 1/4-inch by 1/2-inch line size combination is one of the most common configurations found in single-zone and some multi-zone mini split systems rated from roughly 9,000 to 24,000 BTU/h. The 50-foot length accommodates installations where the indoor and outdoor units are separated by a moderate distance, such as through walls or across multiple floors. Plain end tubing gives the technician flexibility to terminate connections using flare fittings or brazed joints per job requirements.

Key Features

• 1/4-inch liquid line paired with 1/2-inch suction line covers a common mini split line size configuration
• 1/2-inch wall insulation on both lines reduces heat transfer and controls condensation on the suction line
• 50-foot length suits installations with moderate separation between indoor and outdoor units
• Plain end tubing allows field termination by flaring or brazing to match job-specific fittings
• Both lines insulated independently, maintaining thermal performance on the liquid side as well

Compatibility

Designed as an OEM-style replacement or new-installation lineset for ductless mini split 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 familiar with EPA Section 608 refrigerant handling requirements. Power down the mini split system and recover any refrigerant before disconnecting an existing lineset. When terminating plain end tubing, ensure flare angles and brazing joints meet manufacturer and ASHRAE standards to prevent refrigerant leaks. Route and support the lineset per local mechanical code requirements, keeping bends gradual to avoid kinking the copper tubing.

Technical Specifications

• Liquid Line Diameter: 1/4 inches
• Suction Line Diameter: 1/2 inches
• Insulation Wall Thickness: 1/2 inches
• Lineset Length: 50 feet
• Insulation Coverage: Both lines insulated
• End Type: Plain end

Standard Information

• Brand: CERRO
• Manufacturer Part Number: 408-2-50