7-13. Electrical Wiring

CAUTION

1. Specifications

Be sure to do the wiring correctly (incorrect wiring will damage the equipment).

Recommended wire diameter and allowable length for signal receiving unit wiring and its branch wiring: AWG #18, MAX 1,300 ft.

Terminal board

1

WHT

1

Signal receiving

for indoor unit

remote control

2

BLK

2

unit

wiring

Wire from signal receiving unit

Connection

Signal receiving unit wiring (field supply)

1

Wire joint (2 pcs. white, supplied)

Signal receiving unit wiring

Signal receiving unit wiring

Wire joint CE-1 (supplied)

(1)Strip the insulation to approximately 9/16" from the ends of the wires that will be connected.

(2)Twist together the 2 wires and create a crimp connection at the wire joint.

(3)If a special crimping tool is not used, or if the connection is soldered, insulate the wires using insulation tape.

7-14. Test Run Switch

(1)Remove the cover plate of the signal receiving unit. Set the “TEST RUN” switch of the dip switches to the ON position.

(2)Press the ON/OFF operation button on the wireless remote controller.

CAUTION

To avoid placing an

excessive load on the

 

 

 

equipment, use this

 

function only when

 

conducting the test run.

ALL•

RCU : SUB PCB CHK. TEST RUN

ALL•

RCU : SUB PCB CHK. TEST RUN

RCU : MAIN NORMAL

1 2 3

ADR

4 5 6

(3)

Make a test run using the air conditioner in

Fig. 1-106

 

COOL or HEAT mode.

 

(4)

During the test run, the “OPER.,” “TIMER,”

 

 

and “STDBY” LED all blink.

 

To protect the air conditioner from overloading, the outdoor unit will not start running for approximately 3 minutes after power is applied or the air conditioner is turned off and then back on.

When the DIP switch is set to “TEST – ON,” temperature control from the wireless remote controller is disabled. Do not use this setting at any time other than for the test run. Doing so will place an excessive load on the system.

(5)After the test run, press the ON/OFF operation button on the wireless remote controller. Then, set the TEST RUN switch back to the OFF position to cancel the test run mode.

(This receiver includes a 60-minute automatic OFF timer function in order to prevent continuous test run.)

1-108

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Image 114
Panasonic R410A To avoid placing an, Excessive load on, Equipment, use this, Function only when, Conducting the test run

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.