Panasonic CU-4KS31NBU service manual Insulation of Refrigerant Tubing, Indoor unit, Outdoor unit

Models: CU-4KS31NBU

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Manual background

Outdoor Unit CU-4KS24NBU

Indoor unit

Outdoor unit

Wide tube

O.D.1/2"

O.D.3/8"

Service valve on wide tube

DW

CW

BW

SubMain accumulator accumulator

Manual backgroundManual backgroundCompressor

O.D.3/8"

O.D.3/8"

Narrow tube

O.D.1/4"

O.D.1/4"

O.D.1/4"

O.D.1/4"

 

 

High pressure

AW

 

switch

 

H.P.

 

 

Header

 

 

 

Electric

exchanger

 

 

Service valve on

expansion

Heat

M

narrow tube

valve

 

 

 

DN

 

 

M

CN

M

BN

M

AN

Strainer Header

Cooling cycle

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 CU-4KS31NBU service manual Insulation of Refrigerant Tubing, Indoor unit, Outdoor unit