6-13. Removing the Grille to Install the Indoor Unit

Basically, these models can be installed and wired

without removing the grille. If access to any internal part is needed, follow the steps given below:

How to remove the grille

(1)Set the 2 flaps in the horizontal position.

(2)Unscrew the 3 screws. (Fig. 1-39a)

(3)Remove the grille.

(a)Hold both corners of the air-intake grille, then pull out and up to open. (Fig. 1-39b)

(b)Use a flathead screwdriver to push up the 3 tabs to remove the grille. (Fig. 1-39b)

(c)Pull the lower part of the grille toward you to

1 remove. (Fig. 1-39a)

How to replace the grille

(1)Close the flaps.

(2)Reinstall the grille into the lower part while align- ing its tabs on the upper part. (Fig. 1-40a) Insert the tabs in the slots and push the lower part of the grille back into position.

(3)Press at each of the 5 tabs to completely close the grille. Make sure that the grille and frame are firmly fitted together. (Fig. 1-40b)

6-14. Preparing the Indoor Side Tubing

Arrangement of tubing by directions

(a)Right tubing

The corner of the right frame needs to be cut by a hacksaw or the like. (Fig. 1-41)

(b)Right-rear or left-rear tubing

In this case, the corner of the frame needs not be cut.

To mount the indoor unit on the rear panel:

(a)Hang the 3 mounting slots of the unit on the upper tabs of the rear panel. (Fig. 1-42)

1. Specifications

Grille

Air-intake grille

Fig. 1-39a

Air-intake grille

Fig. 1-39b

Fig. 1-40a

Fig. 1-40b

Frame

Right tubing outlet

Fig. 1-41

Mounting slot

Tab

 

Fig. 1-42

1-86

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Panasonic R410A Removing the Grille to Install the Indoor Unit, How to remove the grille, How to replace the grille

R410A specifications

Panasonic R410A is a refrigerant that has gained significant popularity in the air conditioning and refrigeration industry due to its favorable environmental properties and performance characteristics. Specifically designed to replace the harmful R22 refrigerant, which is being phased out due to its ozone-depleting potential, R410A offers a more eco-friendly alternative without compromising on efficiency or power.

One of the main features of R410A is its high energy efficiency. It operates at a higher pressure than R22, resulting in better heat transfer capabilities. This increased efficiency translates to lower energy consumption, making units using R410A more cost-effective in the long run. Additionally, R410A is known for its ability to provide excellent cooling performance even in high-temperature environments, making it suitable for a variety of applications, from residential air conditioning systems to commercial refrigeration units.

In terms of composition, R410A is a blend of two hydrofluorocarbons (HFCs), namely R32 and R125. This combination not only minimizes ozone depletion potential (ODP) but also reduces global warming potential (GWP) compared to older refrigerants. Panasonic has emphasized the importance of innovative technologies in its products, and R410A aligns perfectly with the company's commitment to developing sustainable solutions.

Panasonic also integrates advanced technologies to optimize the performance of R410A systems. For example, variable speed compressors, known as inverter technology, enhance system efficiency by adjusting the compressor's speed according to the cooling demand. This ensures that energy is only consumed when needed, further reducing operational costs.

Furthermore, R410A has a wide range of applications, including air conditioning systems, heat pumps, and chillers. Its versatility makes it a popular choice among manufacturers and consumers alike. The refrigerant is also compatible with existing R22 equipment, although specific retrofit procedures must be followed to ensure peak performance and reliability.

In conclusion, Panasonic R410A stands out as an innovative refrigerant choice in the HVAC industry, offering a combination of energy efficiency, environmentally friendly properties, and advanced technologies. As regulatory frameworks continue to tighten on greenhouse gas emissions, R410A and similar refrigerants are expected to play a crucial role in shaping a more sustainable future for air conditioning and refrigeration. Its high performance and lower environmental impact solidify its position as a leading refrigerant in contemporary cooling solutions.