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DBJ-003
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DABUND
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Copper
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1M - 10M
Material
Color
Keywords
Application
15 Ft 3/8" x 5/8" Mini Split Installation Kit
The Dabund 15 ft 3/8" x 5/8" mini split installation kit provides the core components required to connect compatible indoor and outdoor ductless air-conditioning or heat-pump units. The standard kit combines pre-insulated copper tubing with flared ends and nuts, communication cable, condensate drain hose, wall sleeve, decorative wall cap, and installation accessories.
This configuration is designed for HVAC contractors, mini split distributors, importers, wholesalers, private-label brands, and project buyers that need a compact 15 ft refrigerant line set with a 3/8" liquid line and 5/8" suction line. Always confirm the required pipe diameter, wall thickness, insulation specification, refrigerant pressure requirement, and minimum line length in the equipment manufacturer’s installation manual before ordering or installing.
Product Specifications
| Product Name | 15 Ft 3/8" x 5/8" Mini Split Installation Kit |
| Copper Tube Size | 3/8" liquid line + 5/8" suction line |
| Length | 15 ft |
| Copper Material | C12200 DHP copper; ASTM B280 configuration available |
| Tube Ends | Pre-flared ends with flare nuts |
| Standard Insulation | White closed-cell PE insulation; black rubber insulation available |
| White PE Thickness Options | 8 mm, 9 mm, 10 mm, 13 mm, 19 mm, or 25.4 mm |
| Rubber Insulation Options | 13 mm, 17 mm, 19 mm, or 25.4 mm |
| Insulation Temperature Range | Up to approximately -40°C to 120°C, subject to the selected insulation specification |
| Applications | Compatible ductless mini split, heat-pump, VRF, and split HVAC systems that specify 3/8" x 5/8" refrigerant connections |
| Customization | Length, insulation type, insulation thickness, cable, accessories, packaging, logo, and private label |
What Is Included in the Mini Split Installation Kit?
The standard 15 ft mini split AC installation kit can be supplied with the following components. Final contents should be confirmed in the quotation because cable specifications, drain hose length, insulation thickness, and accessory quantities may vary by market or customer requirement.
One 15 ft pre-insulated 3/8" copper refrigerant tube
One 15 ft pre-insulated 5/8" copper refrigerant tube
Factory-flared tube ends and matching flare nuts
Communication or interconnecting wire cable
Condensate drain hose
Wall sleeve and decorative wall cap
Wrapping tape and selected installation accessories
Important: This is an installation component set, not a universal no-vac quick-connect kit. Verify whether your project requires standard flared tubing, pre-charged connectors, a specific cable gauge, or additional fittings before purchase.
Key Features of the 15 Ft 3/8" x 5/8" Line Set
99.9% Copper Tubing for Refrigerant Service
The copper tubing is manufactured for HVAC refrigerant-line applications and can be supplied in C12200 DHP copper and ASTM B280 configurations. The tubing is designed to support clean bending, reliable flaring, and stable refrigerant flow when installed according to the equipment manufacturer’s requirements.
Pre-Flared Ends with Copper Flare Nuts
Both refrigerant tubes can be supplied with factory-prepared flare ends and matching nuts. This reduces on-site preparation work, but every flare should still be inspected, aligned, lubricated where required by the equipment manufacturer, and tightened with the specified torque.
Closed-Cell Insulation for Condensation Control
The white PE insulation uses a closed-cell structure to reduce heat transfer and help control condensation around the refrigerant tubing. UV-resistant outer-film and black rubber insulation options are available for different climate, installation, and local-code requirements.
Complete Accessory Configuration for Faster Installation
By combining the copper line set, cable, drain hose, wall sleeve, cap, and accessories in one package, contractors and distributors can simplify purchasing, reduce missing components, and standardize installation-kit inventory.
99.9% Pure Copper
White PE Insulation
Flared Ends and Nuts
Three-Layer Insulation Structure
The insulated copper line can be produced with an embossed polyethylene outer film, closed-cell IXPE or PE foam, and an inner insulation layer. This structure is designed to improve weather resistance, reduce moisture penetration, limit heat gain, and protect the tubing during transport and installation.
Insulation Production
Stable Inventory Supply
Closed-Cell Inner Layer
Outer Layer
The embossed PE outer film is designed to resist abrasion, aging, and outdoor exposure. UV-resistant grades are available for applications where the line set may be exposed to sunlight.
Middle Layer
Dense closed-cell IXPE or PE foam helps reduce heat transfer, absorb impact, and limit moisture penetration. Available foam density and thickness can be selected according to project specifications.
Inner Layer
The inner closed-cell layer fits around the copper tubing to improve insulation continuity and condensation resistance. Installation joints and exposed ends should be sealed with compatible insulation tape or sealant.
Product and Accessory Overview
The kit is packed to support efficient on-site connection between the indoor evaporator and outdoor condensing unit. Accessory combinations can be adjusted for retail packaging, contractor packs, distributor cartons, and OEM programs.
Available Mini Split Line Set Sizes
In addition to the 15 ft 3/8" x 5/8" kit, Dabund supplies multiple copper-tube diameter combinations, insulation thicknesses, and lengths for residential and commercial HVAC projects.
| Copper Tube Size | Available Lengths | White PE Insulation | Flame-Resistance Options |
|---|---|---|---|
| 1/4" + 3/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
| 1/4" + 1/2" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
| 1/4" + 5/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
| 3/8" + 5/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
| 3/8" + 3/4" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
| 1/2" + 3/4" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
| 3/8" + 7/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 options |
Mini Split Compatibility and Capacity Guidance
A 3/8" x 5/8" line set is used by selected ductless mini split, heat-pump, and VRF systems, but pipe size is not determined by BTU capacity alone. Different brands and models can specify different refrigerant-line diameters for equipment with similar capacity.
Before purchasing, check the outdoor-unit service-valve sizes, indoor-unit connection sizes, required refrigerant type, approved line-length range, maximum elevation difference, insulation thickness, and whether the manufacturer permits field-flared connections. Do not select a line set only by tonnage or nominal BTU rating.
| Item to Verify | Required Check |
|---|---|
| Liquid and suction line size | The equipment manual must specify 3/8" and 5/8" connections. |
| Minimum and maximum line length | Confirm that a 15 ft run is within the manufacturer’s approved range. |
| Refrigerant and working pressure | Match the tubing specification to the system refrigerant and pressure requirements. |
| Electrical cable | Confirm conductor count, wire gauge, voltage rating, and local electrical code. |
| Condensate drainage | Verify drain-hose diameter, slope, routing, and pump requirements. |
Installation Recommendations
Installation should be completed by a qualified HVAC technician in accordance with the equipment manual, refrigerant regulations, electrical codes, and local building requirements. Correct installation normally includes protecting the tube ends from contamination, avoiding kinks, using an appropriate bending radius, checking flare surfaces, applying the specified torque, pressure-testing for leaks, evacuating the refrigerant circuit, and sealing wall penetrations.
Do not leave insulation joints, flare connections, or copper tubing exposed to moisture or direct sunlight without suitable protection. A line-set cover can improve appearance and provide additional physical and UV protection for exterior installations.
Why Source Mini Split Installation Kits from Dabund?
Dabund has manufactured insulated copper pipe, mini split line sets, aluminum pipe, and HVAC installation accessories since 2008. The company supports wholesalers, HVAC distributors, contractors, importers, and private-label customers with multiple tube sizes, insulation options, accessory combinations, and packaging formats.
Two production facilities and scalable monthly output
Standard and customized mini split installation-kit configurations
OEM and ODM packaging, labeling, and logo printing
White PE and black rubber insulation options
Support for sample evaluation and bulk-order quotations
Export experience for North America, Europe, the Middle East, Latin America, and other markets
Dabund Factory
Production of insulated copper pipe, mini split line sets, aluminum pipe, and HVAC installation accessories.
Testing and Certificate Support
Available product and insulation test documentation may include ASTM B280, ASTM E84, UL 94, ASTM D1056, and ASTM G21-related reports, depending on the selected material and order specification. Request the applicable current report before placing an order.
International HVAC Exhibitions
Dabund participates in HVAC industry exhibitions to meet distributors, contractors, and project buyers and to present mini split line sets and installation accessories.
Wholesale, OEM, and Custom Mini Split Kit Supply
For wholesale or project orders, provide the required tube diameter, finished length, insulation material and thickness, working-temperature requirement, cable specification, drain hose length, included accessories, packaging method, destination market, expected quantity, and certification requirements. Dabund can then prepare a more accurate quotation and sample configuration.
Private-label services can include printed cartons, product labels, barcodes, instruction sheets, customized accessory sets, and logo printing. Production lead time depends on order quantity, packaging, material availability, and customization requirements.
Frequently Asked Questions
What is included in the 15 ft 3/8" x 5/8" mini split installation kit?
The standard kit can include a 15 ft 3/8" liquid line, a 15 ft 5/8" suction line, closed-cell insulation, factory-flared ends, flare nuts, communication cable, drain hose, wall sleeve, wall cap, wrapping tape, and installation accessories. Confirm the final packing list in the quotation.
Will a 3/8" x 5/8" line set fit my mini split system?
It will fit only systems that specify 3/8" and 5/8" refrigerant connections and permit a 15 ft line length. Check the indoor-unit and outdoor-unit installation manuals rather than relying only on the system’s BTU or tonnage rating.
Are the copper tubes pre-flared and supplied with nuts?
Yes. The standard configuration can be supplied with pre-flared tube ends and matching flare nuts. The installer should inspect every flare and tighten each connection to the torque specified by the equipment manufacturer.
Is this mini split line set pre-charged with refrigerant?
The standard product described on this page is a conventional insulated copper line set with flared ends, not a universal pre-charged quick-connect assembly. Discuss any special pre-charged or proprietary connection requirement before ordering.
Can the insulation type and thickness be customized?
Yes. White PE and black rubber insulation are available in multiple thicknesses. The appropriate option depends on climate, condensation risk, outdoor exposure, fire-performance requirements, local codes, and project specifications.
Can Dabund customize the cable, drain hose, and packaging?
Yes. Communication cable, conductor specification, drain hose length, accessory quantities, labels, cartons, barcodes, instructions, and logo printing can be customized for OEM, ODM, wholesale, and private-label orders.
Can I receive a sample before placing a bulk order?
Qualified buyers can request samples for size, material, insulation, packaging, and accessory evaluation. Sample availability, quantity, and freight terms should be confirmed with the sales team.
What are the available payment and delivery terms?
Payment options may include T/T, letter of credit at sight, and other agreed methods. Delivery terms may include EXW, FOB, CFR, or CIF, subject to the final contract and destination.
What is the typical production lead time?
A typical bulk-order lead time is approximately 15 to 20 days after order confirmation, but the actual schedule depends on quantity, customization, packaging, raw-material availability, and factory capacity. Confirm the shipment date in the quotation.
