Panasonic CS-KS18NKU, CU-KS18NKU Refrigerant Flow Diagram, Insulation of Refrigerant Tubing

Models: CS-KS18NKU CU-KS18NKU

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4. REFRIGERANT FLOW DIAGRAM

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit CS-KS18NKU

Outdoor Unit CU-KS18NKU

CU-KS24NKU

CS-KS24NKU

CU-KS18NKUA

CU-KS24NKUA

Indoor unit

Outdoor unit

 

Wide tube

 

 

 

Wide tube

service

 

 

Compressor

valve

 

Accumulator

 

 

*1

 

Muffler

 

 

 

 

 

High pressure

 

 

 

 

switch

 

 

 

 

H.P.

 

Heat exchanger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat exchanger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Narrow

 

Electric

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

expansion

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tube

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

service

 

 

 

 

 

 

 

 

 

Narrow tube

 

 

M

 

 

 

 

 

 

 

 

valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O.D.

1/4"Cooling cycle (6.35 mm)

*1 O.D.1/2"(12.7mm) ... CS/CU-KS18NKU CU-KS18NKUA

O.D.5/8"(15.88mm) ... CS/CU-KS24NKU CU-KS24NKUA

Insulation of Refrigerant Tubing

IMPORTANT

Because capillary tubing is used in the outdoor unit, both the wide and narrow tubes of this air conditioner become cold. To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material. The thickness of the insulation should be a min. 5/16"(8 mm).

Thickness:

Min. 5/16"(8 mm)

Insulation

Thickness:

Min. 5/16"(8 mm)

After a tube has been insulated, never try to bend it into a narrow

Wide tube

Narrow tube

CAUTION

curve because it can cause the tube to break or crack.

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Panasonic CS-KS18NKU, CU-KS18NKU service manual Refrigerant Flow Diagram, Insulation of Refrigerant Tubing