9. Installation Information

9.1Check Points

QUICK GUIDE PIPING AND ELECTRICAL SPECIFICATION

Indoor (ID) &

 

 

Piping size

 

 

Min.

Max.

 

Min. total

Addi-

 

Power

 

Outdoor (OD)

Capacity

Refrige-

 

 

Standard

Max.

pipe

from

Max.

pipe

tional

Power

OD-ID

 

 

length

length

supply

units: Possible

 

 

pipe

Eleva-

OD to

total

refri-

connection

Combination

(Btu/h)

rant

Gas

Liquid

length

tion

for

each

length

for

ge-

supply

wire

wire size

 

 

each ID

additional

 

size

Patterns

 

 

 

 

 

 

ID unit

 

rant

 

 

 

 

 

 

 

 

 

unit

 

 

gas

 

 

 

 

Outdoor (OD):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CU-2E18NBU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor (ID): 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNITS OF CS-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E9NKUAW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor (OD):

 

 

 

 

 

 

 

 

 

 

 

208/230V

 

 

CU-2E18NBU

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor (ID): 2

 

 

Ø3/8”

Ø1/4”

 

See

 

 

 

 

0.2

60 Hz

AWG12

AWFG16

UNITS OF CS-

16700

R410A

24.6 ft

9.8 ft

82.0 ft

164.0 ft

65.6 ft

MCA 20A

(Ø9.52mm)

(Ø6.35mm)

Step 1

oz / ft

E12NKUAW

 

 

 

 

 

 

 

 

 

 

 

MOP

 

 

Outdoor (OD):

 

 

 

 

 

 

 

 

 

 

 

25A

 

 

CU-2E18NBU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor (ID): 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT OF CS-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E9NKUAW +

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 UNIT OF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CS-E12NKUAW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example:

If total piping length of all installed indoor units is at 68.6 ft, the quantity of additional refrigerant should be 0.6 oz ......

(68.6 - 65.6) ft x 0.2 oz/ft = 0.6 oz.

15

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Panasonic CU-2E18NBU service manual Installation Information, Check Points

CU-2E18NBU specifications

The Panasonic CU-2E18NBU is a highly efficient outdoor unit designed for residential and commercial applications, providing reliable heating and cooling year-round. This unit is part of Panasonic's extensive range of HVAC solutions, known for their innovation and energy efficiency.

One of the standout features of the CU-2E18NBU is its advanced inverter technology. This technology allows the system to adjust the compressor speed based on the temperature demand, resulting in reduced energy consumption and enhanced comfort. By continuously varying the output, the inverter system maintains a consistent indoor climate without the frequent on/off cycles typical of conventional systems. This not only saves energy but also extends the lifespan of the unit.

The CU-2E18NBU is designed to operate efficiently in a wide range of conditions, showcasing excellent performance in harsh climates. With a capacity of 18,000 BTU, it can efficiently cool or heat spaces effectively, making it suitable for medium-sized rooms or multiple areas when paired with compatible indoor units.

Another significant characteristic of this Panasonic model is its environmentally friendly refrigerant, R32. This refrigerant has a lower impact on global warming and ozone depletion compared to older options, making the CU-2E18NBU a smart choice for eco-conscious consumers. R32 also enhances the system's efficiency, further contributing to lower energy costs.

The unit features a robust construction, allowing it to withstand outdoor conditions while promoting durability. Its compact design allows for flexible installation options, making it easier to fit in various environments without compromising aesthetic appeal.

Moreover, the CU-2E18NBU incorporates advanced air filtration and purification technologies, improving indoor air quality. The filters are designed to capture dust, allergens, and other particulates, ensuring cleaner, healthier air.

In summary, the Panasonic CU-2E18NBU stands out for its efficient inverter technology, environmentally friendly refrigerant, and compact, durable design. With its ability to provide consistent temperature control and improve indoor air quality, this unit is a reliable solution for anyone looking to enhance their heating and cooling systems.