LINESET DUCTING SYSTEM
Are you interested in knowing more about the lineset ducting system? If so, then you are in the right place. Feel relaxed and make sure you read the article to the end.
RectorSeal has developed the SlimDuct RD-Series and the PD-Series, commercial rooftop ducting and support systems that are designed for multiple linesets as used with variable refrigerant flow and multi-split systems or any other conventional air-conditioning and refrigeration systems. The company says both series save more than 75% in labor when compared to the alternative of custom-fabricated galvanized sheet metal lineset ducting or other labor-intensive fabrications. The RD-Series comprises 20-gauge, roll-formed rectangular sheet metal lineset duct and fittings. It features a proprietary, anti-corrosive, scratch-resistant hot-dipped and chromium-free ZAM® coating (zinc, aluminum, and magnesium) a more durable and lighter weight alternative to galvanized steel. Widths for the RD-300, RD-450, RD-600, and RD-900 are 12, 18, 24 and 36 in, respectively and all are 5-1/8-in high. Based on a 3/8-in by 3/4-in lineset with 1/2-in insulation on both lines, the RD-Series can accommodate the following number of linesets: RD-300 (8), RD-450 (12), RD-600 (19), and RD 900 (25). The PD-Series is designed for smaller installations which do not warrant the larger metal lineset duct. It also serves as a transition to protect the lineset from where it exits the VRF condenser until it enters the RD-Duct. The PD-Series differs from the RD-Series in that it consists of UV, fire, and weather-resistant ivory-colored extruded PVC round duct in 2 sizes only, PD-90 (3.5-in diameter) and PD-120 (4.7-in diameter), and is available in 39 in and 60 in lengths.
Contents
Fortress Lineset Covers
Fortress Lineset covers are a precision system of premade ducting offering strength & longevity at a modest price point. Perfect for a variety of A/C systems, Fortress conceals/protects lineset, wiring & drain hose from weather/damage. Made in USA.
Features
- PVC, UV stabilized & fire resistant. Tested to over 2,000 hours. Temperature range -4°F to 140°F.
- Compliments any residential or commercial building and Paintable- Brush, spray, or roller to match or complement custom colors, Duct & fittings are available in both LD92 (31/2″), LD122 (41/2″)
- 8′ duct lengths in 2 sizes, 4 color options (white, ivory, brown & gray) and 17 fittings assure complete flexibility of installation
- Snap together ducting is easily accessed for repairs or replacement of lineset.
- 3 year warrants l
FAQs:
What is a Lineset Ducting System?
A lineset ducting system refers to the combination of:
-
Refrigerant lines (lineset) – Typically a pair of copper pipes that carry refrigerant between the indoor air handling unit and the outdoor condenser unit.
-
Ducting system – The network of metal or flexible ducts that distributes conditioned air (heated or cooled) throughout a building.
Together, the lineset and ducting form the complete pathway for both refrigerant circulation and air distribution in an HVAC setup.
Components of a Lineset Ducting System
-
Lineset (Refrigerant Piping)
-
Suction Line: Carries low-pressure refrigerant gas back to the compressor.
-
Liquid Line: Carries high-pressure refrigerant liquid to the indoor unit.
-
Insulation: Usually applied to prevent energy loss and condensation on the suction line.
-
Fittings & Valves: Ensure proper connection, maintenance, and leak prevention.
-
-
Ducting
-
Supply Ducts: Deliver conditioned air to rooms.
-
Return Ducts: Bring air back to the HVAC unit for reconditioning.
-
Registers/Grilles: Openings where air enters or exits rooms.
-
Flexible or Sheet Metal Ducts: Choice depends on installation type, space, and cost.
-
How It Works
-
Refrigerant Flow: The lineset circulates refrigerant between indoor and outdoor units to transfer heat.
-
Air Distribution: The ducting system moves air cooled or heated by the indoor unit to different areas in the building.
-
Combined Efficiency: Properly sized linesets and ducting reduce energy loss, maintain comfort, and optimize system efficiency.
Advantages of a Lineset Ducting System
-
Efficient cooling and heating distribution for large spaces
-
Flexible installation options for multi-room buildings
-
Can integrate with central HVAC systems or split AC units
-
Reduces energy waste when properly insulated and sealed
Considerations
-
Line Length: Longer linesets can reduce system efficiency if not sized properly.
-
Duct Sizing: Incorrect duct sizing can cause airflow issues, uneven cooling, or noise.
-
Insulation: Both refrigerant lines and ducts should be properly insulated to prevent condensation and energy loss.
-
Maintenance Access: Valves and ducts should allow for inspection and servicing.