2. Processes and functions

Terminal plug (CN015)

3P plug (black): Terminal plug for the communications line

•At the time of shipment from the factory, the short-circuiting socket (2P, black) is installed between pins 1 and 2 on the terminal plug (terminal = yes).

•When central control is used for multiple systems, leave the short-circuiting socket in place only on the outdoor unit with a system address of 1. At all other outdoor units (other than unit No. 1), move the short-circuiting socket to between 2 and 3 (terminal = no). If multiple short-circuiting sockets remain in place during central control, a com- munications failure will occur.

•In the case of a single system only (system address = 0), do not remove the short- circuiting socket. (Alarm "E04" will occur.)

Quiet mode

2P plug (white): Enables operation in quiet mode.

 

 

(CN028)

•

The outdoor unit fan and compressor frequencies are subject to limits during operation.

 

•

Low-noise operation is enabled when the relay is turned ON.

 

 

 

 

 

 

 

 

 

 

Example of wiring

 

 

 

 

 

 

Relay (field supply) Power

 

 

 

 

1

1

External contact

 

 

 

Quiet mode

 

 

 

 

 

(timer input, etc.: field supply)

 

 

 

2

2

 

 

 

CN028

 

 

 

 

 

 

 

 

 

Outdoor unit control PCB

Note 1: The maximum length of the wiring between the outdoor unit PCB and the relay is

2m.

•Lead wire with 2P plug (special-order part: WIRE K/ CV6231612098)

•Relay, field supply, contact input specifications: DC 5 V, 0.5 mA (Recommended relay: Fuji Electric HH62SW, compatible with micro contacts)

•Use a commercially available timer (such as the Omron H5 daily time switch).

Table 1. Method of System Address Setting

[S002 (rotary, black), S003 (2P DIP switch, green or blue)]

 

Outdoor system

S002 setting

S003 setting

 

 

 

 

 

address No.

(system address switch)

1P (10s-digit place)

2P (20s-digit place)

 

 

 

 

 

 

 

 

 

 

 

 

 

1 system only

1

0

OFF

OFF

 

 

 

 

 

1

1

OFF

OFF

 

 

 

 

 

2

2

OFF

OFF

 

 

 

 

 

3

3

OFF

OFF

Out-

Out-

Out-

Out-

 

4

4

OFF

OFF

door

door

door

door

 

5

5

OFF

OFF

System

 

 

 

 

6

6

OFF

OFF

 

 

 

 

controller

 

 

 

 

7

7

OFF

OFF

 

 

 

 

 

 

 

 

 

8

8

OFF

OFF

 

 

 

 

 

9

9

OFF

OFF

 

 

 

 

 

10

0

ON

OFF

In-

In-

In-

In-

 

11

1

ON

OFF

 

door

door

door

door

Central

12

2

ON

OFF

 

 

 

 

13

3

ON

OFF

 

 

 

 

control

 

 

 

 

14

4

ON

OFF

 

 

 

 

 

 

 

 

 

 

15

5

ON

OFF

 

 

 

 

 

16

6

ON

OFF

 

 

 

 

 

17

7

ON

OFF

 

 

 

 

 

18

8

ON

OFF

 

Fig. 6

 

 

 

19

9

ON

OFF

 

 

 

 

 

 

 

 

 

20

0

OFF

ON

 

 

 

 

 

21

1

OFF

ON

 

 

 

 

 

22

2

OFF

ON

 

 

 

 

 

23

3

OFF

ON

 

 

 

 

 

24

4

OFF

ON

 

 

 

 

 

25

5

OFF

ON

 

 

 

 

 

26

6

OFF

ON

 

 

 

 

 

27

7

OFF

ON

 

 

 

 

 

28

8

OFF

ON

 

 

 

 

 

29

9

OFF

ON

 

 

 

 

 

30

0

ON

ON

 

 

 

 

2

2-11

Page 140 Page 142
Page 141
Image 141
Panasonic R410A service manual Method of System Address Setting, Example of wiring
Page 140 Page 142

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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