Wiring Instructions General Precautions on Wiring

1. Specifications

6-15. Wiring Instructions

General Precautions on Wiring

(1)Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram.

(2)Provide a power outlet to be used exclusively for each unit. A power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line.

(3)To prevent possible hazards from insulation failure, the unit must be grounded.

(4)All wiring must be connected tightly.

(5)Do not allow wiring to touch refrigerant tubing, compressor, or any moving parts of the fan.

Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes.

6-16. Wiring Instructions for Inter-Unit Connections

(1)Insert the inter-unit wiring (according to local electrical codes) into the through-the-wall PVC pipe. Run the wiring toward the indoor side allowing approx. 10 inches to extend from the wall face. (Fig. 1-43)

(2)Route the inter-unit wiring from the back of the indoor unit and pull it toward the front for connection. (Figs. 1-44a and 1-44b)

(3)Connect the inter-unit wiring to the corresponding terminals on the terminal plate (Figs. 1-44a and 1-44b) while referring to the wiring diagram.

(4)Be sure to secure the wiring with the provided clamp.

How to remove the cover plate

To access the terminal plate inside the indoor unit, follow these steps.

(1)Using a Phillips head screwdriver, remove the screw on the cover plate. (Figs. 1-44a and 1-44b)

(2)Remove the cover plate.

Rear	Wall
panel

Plastic	1
cover

Wiring

10 in.

Fig. 1-43

Terminal plate

Cover plate

	Fig. 1-44a
Clamping	Connection for Solenoid
strap	Vale Kit (for 3WAY)

Power wiring (field supplied)

	Earth screw
		Remote control wiring
	Conduit	and Inter-unit control
	Conduit	wiring (field supplied)
	(field supplied)	wiring (field supplied)
	(field supplied)

Fig. 1-44b

1-87

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.