When using the signal receiving unit on a wall with the front exposed, choose a wall surface that the signal receiving unit can be mounted on.

(1)Insert a fl athead screwdriver into the slot on the lower side of the signal receiving unit and pry off the back case.

(2)The wire routing at the signal receiving unit comes out of the upper case (thin portion at upper center) so use nippers or a similar tool to cut out a notch beforehand large enough for the remote control cable (option) to pass through as shown in Fig. 1-99.

(3)Remove the wire, which is connected prior to shipping, from the connector.

(4)Connect the remote control cable (option) to the signal receiving unit connector as shown in Fig. 1-100 after the clamp (supplied) with the unit is installed.

(5)After arranging the wiring on the printed circuit board as shown in Fig. 1-101 so that it is contained within the signal receiving unit, attach the back case. At this time, arrange so that the head of the clamp faces the side.

(6)Remove the cover plate and install the signal receiving unit using the 2 wood screws.

(7)Fasten to the wall using the cord clip (supplied).

(8)Reinstall the cover plate.

Run the remote con cable through a notch in the upper case.

Fig. 1-99

Remote control cord (Option)

Clamp

Fig. 1-101

1. Specifications

Clamp (Supplied)

About 3/32"-1/8"

Connector

Remote control cord

 

(Option)

 

Fig. 1-100

 

Signal receiving unit

ALL•

 

RCU : SUB

PCB

 

CHK.

TEST RUN

RCU : MAIN

NORMAL

 

1 2

3

ADR

 

4 5 6

1

Wood screws (2)

Fig. 1-102

To use the signal receiving unit while mounted on the ceiling, install by using the carrier for ceiling installation supplied with the unit.

A

(1)

Remove the cover plate by inserting a fl athead

 

screwdriver into the notch in the lower section and

 

prying it off.

(2)

Cut out a section (3-3/4"×2-1/32") on the ceiling using

 

the paper pattern (supplied) as a guide.

(3)

Run the wire through the mounting carrier and insert

 

into the installation hole as shown in Fig. 1-103.

(4)

Fit securely into the ceiling material at sections (A)

 

and (B) as shown in Fig. 1-104.

(5)

Connect the wire (2-wire core) from the signal

 

receiving unit with the wire from the indoor unit. (See

 

section on how to wire the receiving unit.) as shown in

Fig. 1-103

B

Fig. 1-104.

(6) Use the supplied spacers to adjust for a thickness

several inches more than the ceiling material and

lightly fasten the receiving unit in place with the small

screws (M4×1-9/16", 2 pcs.) supplied with the unit.

(7) Tighten the machine screws after fi tting sections (A)

and (B) into the openings, in the gap between the

signal receiving unit and ceiling surface as in Fig. 1-105.

Do not apply strong force when tightening the screws.

Excessive force might warp or damage the cover.

When fi nished, the signal receiving unit should still be

able to move slightly when pressed as shown in Fig.

1-105.

(8) Reinstall the cover plate.

Fig. 1-104

Fig. 1-105

1-107

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Panasonic R410A service manual 107
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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.
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