3 SELECTION OF INSTALLATION

How to remove the front panel

1.Remove screws of the front panel.

2.Pull the front panel downward.

Removing the front panel, the electric parts appear at the front side.

The metal pipes are attachable to the piping holes. If the size of the used power pipe does not match with the hole, adjust the hole size to match with pipe size.

Be sure to fix the power cable and indoor/outdoor connecting cable with bundling band sold on the market so that they do not make contact with the compressor and discharge pipe.

(Temperature of the compressor and discharge pipe becomes high.)

In order to avoid the force applied to on the connect- ing section, be sure to fix the cables to the cord clamps provided on the pipe valve fixing plate and the electric parts box.

Electric parts box

Front panel

Pipe valve

fixing plate

Piping

hole

Cord clamp

4 REFRIGERANT PIPING

Pipe Forming/End Positioning

Flaring

1. Cut the pipe with a pipe cutter.

90˚

Obliquity Roughness

Warp

*In case of flaring for R410A with the conventional flare tool, pull it out approx. 0.5 mm more than that of R22 to adjust to the specified flare size. The copper pipe gauge is useful for adjusting projection margin size.

A

2. Insert a flare nut into the pipe, and flare the pipe.

 

 

 

As the flaring sizes of R410A differ from those of

 

 

 

refrigerant R22, the flare tools newly manufactured

 

 

 

for R410A are recommended.

 

 

 

However, the conventional tools can be used by

 

 

 

adjusting projection margin

 

B

 

of the copper pipe.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Projection margin in flaring : B (Unit : mm)

Rigid (Clutch type)

Outer dia.

R410A tool used

Conventional tool used

of copper

 

 

 

 

R410A

R22

R410A

R22

pipe

 

 

 

 

 

6.4

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

9.5

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

12.7

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

15.9

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

• Flaring size : A (Unit : mm)

 

A

+0

Outer dia. of copper pipe

 

- 0.4

R410A

R22

 

 

 

 

6.4

9.1

9.0

 

 

 

9.5

13.2

13.0

 

 

 

12.7

16.6

16.2

 

 

 

15.9

19.7

19.4

 

 

 

Imperial (Wing nut type)

Outer dia. of copper pipe

R410A

R22

 

 

 

6.4

1.5 to 2.0

1.0 to 1.5

 

 

 

9.5

1.5 to 2.0

1.0 to 1.5

 

 

 

12.7

2.0 to 2.5

1.5 to 2.0

 

 

 

15.9

2.0 to 2.5

1.5 to 2.0

 

 

 

24

Page 24
Image 24
Toshiba service manual Projection margin in flaring B Unit mm, Outer dia. of copper pipe R410A

R410A specifications

Toshiba R410A is a highly regarded refrigerant known for its efficiency and environmental benefits. This hydrofluorocarbon (HFC) mixture is widely used in various air conditioning and refrigeration applications due to its excellent thermodynamic properties. One of the standout features of R410A is its superior energy efficiency, which contributes to lower energy consumption and reduced CO2 emissions in HVAC systems.

One significant advantage of R410A over older refrigerants, such as R22, is its lower ozone depletion potential (ODP). R410A has an ODP of zero, making it a more environmentally friendly choice. This characteristic aligns with global initiatives aimed at protecting the ozone layer and promoting sustainable practices. The shift to R410A has been supported by government regulations in many countries, phasing out older, more harmful refrigerants.

Toshiba has incorporated advanced technologies in its R410A compatible products, enhancing performance and reliability. Among these technologies is the inverter technology that allows the compressor to operate at variable speeds. This functionality leads to improved temperature regulation, reduced noise levels, and further energy savings. Inverter systems provide precise control over the cooling and heating processes, allowing for a comfortable indoor environment while minimizing wastage of energy.

R410A also exhibits excellent heat transfer properties, which boosts cooling capacity. This feature makes it suitable for large-scale HVAC systems, including commercial and industrial applications. Its high-pressure characteristics enable the design of more compact and efficient components, allowing for smaller units and easier installation.

Furthermore, Toshiba's dedication to technological innovation is visible in its commitment to research and development. The company continuously strives to optimize systems that utilize R410A, focusing on reliability and longevity. This includes improved compressor designs, enhanced heat exchangers, and the integration of smart controls that adapt to the varying load conditions in real-time.

In terms of safety, R410A is classified as non-toxic and non-flammable under normal conditions, making it a safe choice for use in residential and commercial settings. However, it is important to note that R410A operates at higher pressures compared to traditional refrigerants, necessitating proper equipment design and handling procedures.

In conclusion, Toshiba R410A stands out in the market for its energy efficiency, environmental safety, and technological advancements. It is an ideal refrigerant for modern HVAC applications, contributing to both comfort and sustainability. As the industry continues to evolve, R410A remains a pivotal element in the quest for responsible and efficient refrigeration solutions.