Connection of Refrigerant Tubing

The indoor unit refrigerant line connections are flared both 50 Hz and 60 Hz. Installation brazing, leak testing, and evacuation of refrigerant lines are covered in the Installer Manual, packaged with the outdoor unit. Read the instructions before installing the refrigerant lines.

The indoor unit refrigerant piping connections are located on the right hand side when facing the unit (Figure 11).

Figure 11

Connecting the unit with flaring procedure.

(Only for MCX 512-536)

1.Flaring (If piping is procured or cut at the site). Cut the copper tube to the required length with a tube cutter. It is recommended to cut approx. 30-50 cm. longer than the tubing length you estimate.

2.Hold each pipe downward when cutting and remove burrs at the end of the copper tube with a tube reamer or file. This process is important and should be done carefully to make a good flare (Figure 12 and Figure 13).

Copper tubing

Reamer

Figure 12

When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube.

3.Remove the flare nut from the unit and be sure to mount it on the copper tube.

Deburring

BeforeAfter

Figure 13

4.Make a flare at the end of copper tube with a flare tool (Figure 14, 15).

Flare nut

Copper tubing

Flare tool

Figure 14

L

Check if (L) is flared uniform and is not cracked or scratched.

LDimension:

1.4to 1.7 mm (6.35 mm dia)

1.8to 2.0 mm (9.53 mm dia)

1.9to 2.2 mm (12.7 mm dia)

2.1to 2.4 mm (15.88 mm dia)

Figure 15

A good flare should have the following characteristics:

-Inside surface is glossy and smooth.

-Edge is smooth.

-Tapered sides are of uniform length.

Bending

5.When bending the tube, be careful not to crush it. To prevent crushing of the tube, bend it gently and do not bend the tube at a radius curvature of less than 100 mm.

6.If the copper tube is bent or pulled too often, it will become stiff. Do not bend the pipe more than three times at one place.

Cautions before connecting tubes tightly

7.Be sure to apply a sealing cap or water-proof tape to prevent dust or water from getting into the tubes before they are used.

8.Be sure to apply refrigerant lubricant to the matching surfaces of the flare and union before connecting them together. This is effective for reducing gas leaks (Figure 16).

Apply refrigerant

lubricant here

Figure 16

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Trane MS-SVN015-EN installation manual Connection of Refrigerant Tubing, Bending
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MS-SVN015-EN specifications

The Trane MS-SVN015-EN is a sophisticated and highly efficient system controller designed specifically for enhancing the performance of HVAC systems. This innovative controller is part of Trane's commitment to delivering smart, reliable, and energy-efficient solutions for commercial and residential applications.

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The MS-SVN015-EN employs Trane's proprietary control algorithms, which utilize real-time data analytics to make informed decisions about system operation. This technology not only helps to improve occupant comfort but also reduces energy consumption by minimizing unnecessary equipment runtime. By optimizing energy use, the controller can significantly lower utility costs, aligning with today's focus on sustainability.

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In summary, the Trane MS-SVN015-EN is a cutting-edge system controller that combines advanced technology, user-friendly interfaces, and energy-efficient operation. Its ability to enhance HVAC system performance while reducing operational costs makes it a valuable asset for any facility seeking to optimize indoor climate control.
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