7-4. Precautions during Brazing

●Replace air inside the tube with nitrogen gas to prevent copper oxide film from forming during the brazing process.

●Do not allow the tubing to get too hot during the brazing process.

The nitrogen gas inside the tubing may overheat, causing refrigerant system valves to become damaged. Therefore allow the tubing to cool be- tween brazings.

7-5. Connecting Tubing between Indoor and Outdoor Units

(1)Tightly connect the indoor side refrigerant tubing with the outdoor side tubing. (Fig. 7-6)

(2)To fasten the flare nuts, apply specified torque as:

Table 7-1

Tube Dia.

Tightening Torque

 

 

1/4" (6.35 mm)

Approx. 140 — 180 kg-cm

(120 — 160 Ibs-in.)

 

 

 

5/8" (15.88 mm)

Approx. 680 — 820 kg-cm

(590 — 710 lbs-in.)

 

Torque wrench

Spanner

Indoor unit

Outdoor unit

0131_C_I

Fig. 7-6

Refrigerant tubing

Seal (supplied)

 

Insulation tape (white)

 

(supplied)

 

Flare insulator (supplied)

Unit side

Tube insulator

(not supplied)

insulator

 

Flare nut

Vinyl clamps (supplied)

 

 

1015_X_I

Fig. 7-7

7-6. Insulating the Refrigerant Tubing

Always insulate tubes after

CAUTION completing leak tests on all connection points.

Important

To avoid condensation and water leaks, the wide and narrow tubes must be insulated with the supplied insulation materials.

Taping the flare nuts

Wind white insulation tape around the flare nuts at the wide and narrow tube connections. Place the seal (supplied) on the unit. Then cover up the tubing connections with the flare nut insulator, and cover the gap at the union with the supplied black insulation tape. Finally, fix the insulator at both ends with vinyl clamps. (Fig. 7-7)

Insulation material

The material used for insulation must have good insuIation characteristics, be easy to use, be age resistant, and must not easily absorb moisture.

After a tube has been insu-

CAUTION lated, never try to bend it because it can cause the tube to break or crack.

 

Refrigerant tubing and insulator

Drain insulator

(not supplied)

Drain pipe and insulator

and clamp.

Large

(not supplied)

(supplied)

 

Packing

 

clamp.

Insulation

Small

tape

hose band

Vinyl

(supplied)

Flare clamp

 

 

insulator

 

Seal

0558_X_I

Never grasp the drain or refrigerant connecting outlets when moving the unit.

Fig. 7-8

22S4359128

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Sanyo XS1852 Precautions during Brazing, Connecting Tubing between Indoor and Outdoor Units, Refrigerant tubing
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PNR-XS2432, XS1852 specifications

The Sanyo XS1852 and PNR-XS2432 are dual offerings that exemplify cutting-edge technology in the realm of compact air conditioning systems. Sanyo, a trusted brand in HVAC solutions, has built these units to cater to both efficiency and comfort, making them ideal for residential and commercial applications.

The Sanyo XS1852 is a wall-mounted split air conditioning system known for its sleek design and powerful performance. It features advanced inverter technology, allowing for variable speed operation. This means the compressor adjusts its speed based on the cooling demand, resulting in significant energy savings and enhanced comfort. The XS1852 operates quietly, producing minimal noise, making it suitable for bedrooms and quiet spaces.

One of the standout features of the XS1852 is its intelligent air distribution. The unit is equipped with multiple airflow settings and swing functions that ensure the air is evenly distributed throughout the room. This feature helps maintain a consistent temperature, avoiding hot or cold spots. The XS1852 also boasts a user-friendly remote control and an intuitive LED display, making it easy to adjust settings even from a distance.

Meanwhile, the PNR-XS2432 is designed for larger spaces, with robust cooling capacities. This ceiling cassette model offers a discreet installation option, fitting seamlessly into various environments. It features a four-way airflow system that enables effective air distribution from all sides, ensuring maximum comfort even in larger rooms. The PNR-XS2432 is also designed with a high energy efficiency rating, providing both cost savings and reduced environmental impact.

Both units incorporate advanced filtration technology, including a multi-layer filtration system that captures dust, allergens, and odors. This feature not only enhances air quality but also contributes to a healthier indoor environment.

Another important characteristic of these models is their compatibility with smart home systems. Users can easily connect these units to their smart devices, allowing remote access and control via mobile applications. This added convenience makes it possible to schedule cooling cycles and monitor energy usage, promoting smarter energy consumption.

In summary, the Sanyo XS1852 and PNR-XS2432 represent a blend of innovative technology, energy efficiency, and user-centric design. They are ideal solutions for anyone seeking reliable and effective air conditioning options that enhance comfort while minimizing environmental impact.
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