Refrigerant Line Set Diameters | Lennox International Inc 2SCU13

suction riser to maintain minimum velocity at minimum capacity. Recommended line length is 50' or less. If more than 50' line set is required, contact Technical Services at (419) 483-4840.

Table 2 shows the diameters for line sets up to 100' although vertical lift applications and trapping require- ments need to be reviewed with Technical Services for line sets over 50'.

Refrigerant Line Set Diameters (in.)

Liquid Line

BTUH	Line Set Length and Size

	12 ft.	25 ft.	50 ft.	75 ft.	100 ft.
	12 ft.	25 ft.	50 ft.	75 ft.	100 ft.
18,000	3/8	3/8	3/8	3/8	3/8

24,000	3/8	3/8	3/8	3/8	3/8
30,000	3/8	3/8	3/8	3/8	1/2

36,000	3/8	3/8	3/8	3/8	1/2
42,000	3/8	3/8	3/8	1/2	1/2

48,000	3/8	3/8	3/8	1/2	1/2
60,000	3/8	3/8	3/8	1/2	1/2


		Suction Line

BTUH	Line Set Length and Size

	12 ft.	25 ft.	50 ft.	75 ft.	100 ft.
	12 ft.	25 ft.	50 ft.	75 ft.	100 ft.
18,000	3/4	3/4	3/4	3/4	3/4

24,000	3/4	3/4	3/4	3/4	7/8
30,000	3/4	3/4	3/4	7/8	7/8

36,000	7/8	7/8	7/8	7/8	1-1/8
42,000	7/8	7/8	7/8	1-1/8	1-1/8

48,000	7/8	7/8	7/8	1-1/8	1-1/8
60,000	1-1/8	1-1/8	1-1/8	1-1/8	1-1/8

For installations exceeding 50', contact

Technical Services at (419) 483-4840.

Table 2

Installing Refrigerant Line

During the installation of an air conditioning system, it is important to properly isolate the refrigerant line to prevent unnecessary vibration. Line set contact with the structure (wall, ceiling, or floor) may cause objectionable noise when vibration is translated into sound. As a result, more

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energy or vibration can be expected. Close attention to line set isolation must be observed.

Following are some points to consider when placing and installing a high-efficiency outdoor unit:

Placement

Be aware that some localities are adopting sound ordinances based on how noisy the unit is at the neighbor’s home, not at the original installation. Install the unit as far as possible from the property line. When possible, do not install the unit directly outside a bedroom window. Glass has a very high level of sound transmission. Figure 5 shows how to place the outdoor unit and line set to reduce line set vibration.

Outside Unit Placement

and Installation

Install unit away from windows

Two 90° elbows installed in lineset will reduce lineset vibration

Figure 5

Line Set Isolation

Illustrations on the following pages demonstrate proce- dures which ensure proper refrigerant line set isolation. Figure 6 shows how to install line sets on horizontal runs. Figure 7 shows how to make a transition from horizontal to vertical. Figure 8 on page 6 shows how to install line sets on vertical runs.

Brazing Connection Procedure

1.Cut ends of refrigerant lines square (free from nicks or dents). Debur the ends. The pipe must remain round; do not pinch end of line.

2.Before making line set connections, use dry nitrogen to purge the refrigerant piping. This will help to prevent oxidation and the introduction of moisture into the system.

#48283B006

2SCU13 specifications

Lennox International Inc. is renowned for its innovation in heating, ventilation, air conditioning, and refrigeration (HVACR) systems. One of its standout products is the 2SCU13 model, which embodies the company's commitment to energy efficiency and customer comfort. This air conditioning unit is particularly appreciated in both residential and light commercial applications for its robust performance and advanced features.

The 2SCU13 is designed with a focus on energy efficiency, boasting a SEER rating of up to 14. This not only eases the burden on utility bills but also aligns with environmentally conscious practices by reducing carbon footprints. The unit’s efficiency is further enhanced by its scroll compressor, which is known for reliable performance and quiet operation.

One of the key characteristics of the 2SCU13 is its two-stage cooling system. This technology allows the unit to operate at two different cooling capacities, adapting to varying temperature conditions. By running at a lower capacity during mild weather, the 2SCU13 minimizes energy consumption, while still ensuring optimal comfort during hotter days by ramping up to full capacity when needed. This adaptability also contributes to a more consistent temperature throughout the space being cooled.

Another notable feature is the unit's humidity control capabilities. The two-stage operation also aids in managing indoor humidity levels, making it an excellent choice for areas with high humidity. Proper humidity control not only enhances comfort but also plays a crucial role in improving indoor air quality.

The design of the 2SCU13 ensures durability and longevity. It comes equipped with a rugged cabinet that withstands the elements, along with a baked-on powder coat finish that resists rust and corrosion. The unit also includes a protective grille that serves to shield the coil from debris, further enhancing its lifespan.

With easy installation and maintenance in mind, Lennox has incorporated service-friendly features into the design of the 2SCU13. The unit includes a convenient access panel that simplifies routine checks and repairs, making it easier for homeowners and technicians alike.

Overall, Lennox International Inc. 2SCU13 represents a harmonization of efficiency, comfort, and durability, making it a noteworthy choice among HVAC systems. Its advanced technology and design features ensure that it meets the evolving needs of consumers while providing reliable performance for years to come.